Upload
vukhanh
View
217
Download
0
Embed Size (px)
Citation preview
Ci) ~ lOO 0
-E 250 - 200i CD 150
fl)
c2 100 ~ s so
___ bull No Discharge
D Advanced
Secondary
D Less Than secondary
bull Raw
~ a 0
D 0
1940 1950 1962 1968 1972 1978 1982 1988 1992 1996 2000 2004 2008 2012 Projected
Year Sourc9 US Public N~alth Servica and poundPA Clean Watarsh~ds Needs Surveys
Population Served by POTWs for Select Years between 1940 and 2012 and Projected (ifAll Needs Are Met) by Treatment Level
965 927 904 887 -24 -2 (9221 (7302) (7374) (6670)
Greater than Secondary 130 37 (4916 (5072) (5036) (6111)
1085 1130 1277 1749
146 169 160 267 -56 67 (2188 (2251) (2281) (2461)
Partial Treatment (218) (115) (23) (15)
2228 2264 2382 2949 (16583) (14770) (14748) (15280) 2452
Noce Tnese raclltles pr01CJe some treatment to astewater aoo a1scna1 tnelr erauents to other racrnues ror rurtner treatment ana oiscnargg Tile popu1auon assoctateo wnn cnase nae 11ues 1s omttuia rrom cnis uo1e to avoliO aouDle coun ne bull nts taole conta ns Dest avana1gt1e Information rrom states and Terr1t0Ms tnat OICI not 11ave t11e resoutes to corrplete tile upaaung or tll8 oata orltflO not
partlClpate n tne CWNS 2004 Cl( 2008 In these circumstances 1nrormatlon ror Ulls tao e was taken rrom pni1ous SWl)S
11 lndooes taltllllles grantoo section 30l(n) waMrs rrom seconaary trtrntment tor mscnarges to marim~ yatms AS or January 1 2012 walINS ror 36 racmtres mtne cv~s 2012 aataoasG naa oeen vanteo or ere pena111amp
14
Projected Water Reuse 2001to2015
12 --+-~~~~-------~~--------
10 -t-------------------~~
8 -+----------------------~
6 -------------------shy
4 ------shy---shy-shy17
2 -shy
Water Supply Water Usage (Ag Domestic Industrial)
~
US Water De1nands b Maior Uses
1
bull Public amp Do1nestic
D Industrialamp Connne1middotcial
D AgriculturaI Irrigation
bull LiYes1ock
D Il1e1middotmoelectric
r
Source Solley et al 1988
USGS 1995
Mid-Atlantic Delaware District of Columbia Maryland Pennsylvania Virginia and West Virginia
IUU n
J ao 1 l
~o bullU~
co
10
Poilll1on lbullbulldUw
Figure $-6 Ch~nge In popult1Uon (2000middot2010) ind developed 1ind (1997middot2007) in the MidmiddotAtlontic region compared to the United sutes
--Odbullw1rbull
- WJ J-n1r 011 Clt _ brbftd
0 5 - r
00 -w-t i ~~fllf~B~~
Mon1h
Figure 5middot7 Averige monthly precipitition in the Mid-Atlantic region
5223 Water Use by Secto r Figure 5-8 shows freshwater use by sector in the MidshyAtlantic Region
Oomesttc ~elfmiddot supply
1
TillaquomOflelttrtc 81
Figure 5-8
Liv~ tock lt1
~~----Alt1uacul tu re 2
Industrial 79io
Freshwater use by sector for the Mid-Atlantic region
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
965 927 904 887 -24 -2 (9221 (7302) (7374) (6670)
Greater than Secondary 130 37 (4916 (5072) (5036) (6111)
1085 1130 1277 1749
146 169 160 267 -56 67 (2188 (2251) (2281) (2461)
Partial Treatment (218) (115) (23) (15)
2228 2264 2382 2949 (16583) (14770) (14748) (15280) 2452
Noce Tnese raclltles pr01CJe some treatment to astewater aoo a1scna1 tnelr erauents to other racrnues ror rurtner treatment ana oiscnargg Tile popu1auon assoctateo wnn cnase nae 11ues 1s omttuia rrom cnis uo1e to avoliO aouDle coun ne bull nts taole conta ns Dest avana1gt1e Information rrom states and Terr1t0Ms tnat OICI not 11ave t11e resoutes to corrplete tile upaaung or tll8 oata orltflO not
partlClpate n tne CWNS 2004 Cl( 2008 In these circumstances 1nrormatlon ror Ulls tao e was taken rrom pni1ous SWl)S
11 lndooes taltllllles grantoo section 30l(n) waMrs rrom seconaary trtrntment tor mscnarges to marim~ yatms AS or January 1 2012 walINS ror 36 racmtres mtne cv~s 2012 aataoasG naa oeen vanteo or ere pena111amp
14
Projected Water Reuse 2001to2015
12 --+-~~~~-------~~--------
10 -t-------------------~~
8 -+----------------------~
6 -------------------shy
4 ------shy---shy-shy17
2 -shy
Water Supply Water Usage (Ag Domestic Industrial)
~
US Water De1nands b Maior Uses
1
bull Public amp Do1nestic
D Industrialamp Connne1middotcial
D AgriculturaI Irrigation
bull LiYes1ock
D Il1e1middotmoelectric
r
Source Solley et al 1988
USGS 1995
Mid-Atlantic Delaware District of Columbia Maryland Pennsylvania Virginia and West Virginia
IUU n
J ao 1 l
~o bullU~
co
10
Poilll1on lbullbulldUw
Figure $-6 Ch~nge In popult1Uon (2000middot2010) ind developed 1ind (1997middot2007) in the MidmiddotAtlontic region compared to the United sutes
--Odbullw1rbull
- WJ J-n1r 011 Clt _ brbftd
0 5 - r
00 -w-t i ~~fllf~B~~
Mon1h
Figure 5middot7 Averige monthly precipitition in the Mid-Atlantic region
5223 Water Use by Secto r Figure 5-8 shows freshwater use by sector in the MidshyAtlantic Region
Oomesttc ~elfmiddot supply
1
TillaquomOflelttrtc 81
Figure 5-8
Liv~ tock lt1
~~----Alt1uacul tu re 2
Industrial 79io
Freshwater use by sector for the Mid-Atlantic region
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
14
Projected Water Reuse 2001to2015
12 --+-~~~~-------~~--------
10 -t-------------------~~
8 -+----------------------~
6 -------------------shy
4 ------shy---shy-shy17
2 -shy
Water Supply Water Usage (Ag Domestic Industrial)
~
US Water De1nands b Maior Uses
1
bull Public amp Do1nestic
D Industrialamp Connne1middotcial
D AgriculturaI Irrigation
bull LiYes1ock
D Il1e1middotmoelectric
r
Source Solley et al 1988
USGS 1995
Mid-Atlantic Delaware District of Columbia Maryland Pennsylvania Virginia and West Virginia
IUU n
J ao 1 l
~o bullU~
co
10
Poilll1on lbullbulldUw
Figure $-6 Ch~nge In popult1Uon (2000middot2010) ind developed 1ind (1997middot2007) in the MidmiddotAtlontic region compared to the United sutes
--Odbullw1rbull
- WJ J-n1r 011 Clt _ brbftd
0 5 - r
00 -w-t i ~~fllf~B~~
Mon1h
Figure 5middot7 Averige monthly precipitition in the Mid-Atlantic region
5223 Water Use by Secto r Figure 5-8 shows freshwater use by sector in the MidshyAtlantic Region
Oomesttc ~elfmiddot supply
1
TillaquomOflelttrtc 81
Figure 5-8
Liv~ tock lt1
~~----Alt1uacul tu re 2
Industrial 79io
Freshwater use by sector for the Mid-Atlantic region
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Water Supply Water Usage (Ag Domestic Industrial)
~
US Water De1nands b Maior Uses
1
bull Public amp Do1nestic
D Industrialamp Connne1middotcial
D AgriculturaI Irrigation
bull LiYes1ock
D Il1e1middotmoelectric
r
Source Solley et al 1988
USGS 1995
Mid-Atlantic Delaware District of Columbia Maryland Pennsylvania Virginia and West Virginia
IUU n
J ao 1 l
~o bullU~
co
10
Poilll1on lbullbulldUw
Figure $-6 Ch~nge In popult1Uon (2000middot2010) ind developed 1ind (1997middot2007) in the MidmiddotAtlontic region compared to the United sutes
--Odbullw1rbull
- WJ J-n1r 011 Clt _ brbftd
0 5 - r
00 -w-t i ~~fllf~B~~
Mon1h
Figure 5middot7 Averige monthly precipitition in the Mid-Atlantic region
5223 Water Use by Secto r Figure 5-8 shows freshwater use by sector in the MidshyAtlantic Region
Oomesttc ~elfmiddot supply
1
TillaquomOflelttrtc 81
Figure 5-8
Liv~ tock lt1
~~----Alt1uacul tu re 2
Industrial 79io
Freshwater use by sector for the Mid-Atlantic region
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Mid-Atlantic Delaware District of Columbia Maryland Pennsylvania Virginia and West Virginia
IUU n
J ao 1 l
~o bullU~
co
10
Poilll1on lbullbulldUw
Figure $-6 Ch~nge In popult1Uon (2000middot2010) ind developed 1ind (1997middot2007) in the MidmiddotAtlontic region compared to the United sutes
--Odbullw1rbull
- WJ J-n1r 011 Clt _ brbftd
0 5 - r
00 -w-t i ~~fllf~B~~
Mon1h
Figure 5middot7 Averige monthly precipitition in the Mid-Atlantic region
5223 Water Use by Secto r Figure 5-8 shows freshwater use by sector in the MidshyAtlantic Region
Oomesttc ~elfmiddot supply
1
TillaquomOflelttrtc 81
Figure 5-8
Liv~ tock lt1
~~----Alt1uacul tu re 2
Industrial 79io
Freshwater use by sector for the Mid-Atlantic region
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
lampJ
1 l
UJ c l O
~ i bull D
J)
bullo fr
F111ur5-31 Ch~nge In popubticn (2000-2010) and developed lilnd (1997-2007) in t he Pi1ciF1C Nonhwest relion com~red to tlle Unit~ StalH
l)fl
Figull 5-3-9 Average monthly pcipibtion in the Pacific Nor111west region
Figure 5middot40 shows freshwater use by sector in Pacific Northwest
Oomc~uc sclmiddot supply
1 ii
3
Figure 5-40 Freshwater use by sector for the P11clfic Northwest region
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Figure 5-34 deptets average monthly prec1p1tallon m the states of the Pacific Southwest-Arizona Cabfomia Hawau and Nevada
~ ~ ~ ~ i ~ l - sect ~ Monlh
Figu-e 5-34 Average monthly precrpnauon In the Pacmc SoultlWest region
Miring 2
lndUsbial 1
Aquacutue 1
Livestock lt1
Figure 5-35
Oomoslic solfshysupply
1
Freshwater use by sector for the Pacific Southwest region
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
bull TMS fUTllll uses bull 10NmiddotPOTAIU RtCUIMfD
lUlJMgtO NOT ORN
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
+ Unrestricted Urban Reuse
+ Restricted Urban Reuse
middot+ Agriculturral Reuse for Food CrORS
bull Recreational Impoundments
lntrusian Barrier
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Urban Reuse
bull Landscape i1middot1middotigation
bull Golf courmiddotse i1middot1middotigation
bull Comme1middotcial uses
bull Deco1middotative wate1middot featu1middotes
bull Fi1middote p1middotevention
bull Toilet and u1middotinal flushing
bull Othe1middot nonpotable uses
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
-ampEPA-__
2 12 Guidelines for Water Reuse
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Unrestricted
Restricted
figtod Crops
Pr~sHI Food Crops and Nonfood Crops
Unres tricted
Restricted
Grounctw~ter Rechar- Nonpotab lt Reuse
Ind irect Pobbte Reuse(IPRt
Direct Pouble Reun(DPR)
~ use of re~llled watef for nonpotlb~ apphations in mun cipil settn~ ~republic access is no1 reS1nctid
Thie uw of rt~edwattrflaquo nonpot3tgtI appkWons in munlClpat ~ugs~epublic aocess Is con~d ot tSIMIM b-y pb~J or inslitu1lanal ~ Sucft 3S fMCltlg ad1t1sory sigr1t1ge or temporal aeoess restnction
~use of recbmed wawr to ilT~ fQOd eropi tigtat are intended fOf hu~n consumptiCWI
Tho use of recb1ned watM to inigMe a-ops ltat~ either processed beo1e human consumpcion or noc consumed by humans
The use of recbYried ~1er in art TPOUndPeflt I whictl no limitatcgtns ar1 imposEltf on bodyltontad wl1H riCffiltion JCtivites (sane stlltH caegorze snowmakig in this ca~gory)
The use of reWlled wa1elt in an ~poundmen1 where body contaCI IS restriceltJ (some states indude fi~g aoo boatng m tt$ category)
Thie uw of rechind w1tN to crec MhMlct susiain or wgment bullwltlltr bodies incfucling ~311ds 1Qlltie habitats or stre-irn low
The use of recbmed water in ndustrial appl1catJcns and f~lrties power prochxtxm and extraction o fossil fuels
Thie use of recbmd ~ter to rtchJrgt J(luien that lrt not used as a poiablewaier souru
Augmentation oa drinkng water soorce (surface deg groundwater) witn reclaJmed water followed by a11
erwllnmental bufer tha1 PfeOEdes nonnal drinkTIV wateJ lrecai1men
Thie in110duction d rteJJjmed WJter (Wth ot wflhout fltMtion in an MginHld ~rorag~ bulfr) er~ to a wnet tre31ment plani Mher col~d ot ~~ lttim lhe advanced wasllviatertreatment system
27
-43
3 1
16
0
1 Individual mte re~ POIPltJIM often ncorporat emiddot diffe~nl rerrninoQgy so Ole reader should exerci~ cotltoo in ltXlmparng Ille categories in lhltw tables direlt11y to 5tate reglb1ocy ciElini lions
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
---------UNPLANNED de facto) potable water reuse
bull a
bullbull 0 IU~lI TIN If~ U CO -middot-
bull
bull
bull
middot~middot
s
0
i I bull
I
Source Rivers of DWTP Intake SitH
The NAE report stated that de facto reuse with 5 treated wastewater posed higher risks from wastewater contaminants than planned Potable reuse schemes
Source Rice and Westerhgff (2015) Environ Sci Technol 49 (2) 982-989
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Permiddotcent Opposed to Uses of Effluent
Type of Re 11~ e
Drinking Vater Bathing in th~ ho~
wi1nming l11ioation of dairy pasture
Orrha1d ilrigation Re idential irligation Golf course i11ioation
Road ronst111Ction
General Option~ Survty (Oo)
54 33 21 14 10
4 3 2
Source BrnYold 1988
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
IRRIGAT N WITH RECLAIMED WATER
DO NO DRINK I
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
wetLlais and Other 6~ ~ricultunllrri gatJon
19~ Gro111d W ll er Recharge
16
Industrial Reuse
15
PublicAccess Irrigation
44
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Habitate R estoration
6
Recreit ional
I1T1gto inI ments
4
Seawats Barris
3
Gtoind W et er Recharge
1 2 Agr icultu1al Irr igation
48
Ind ustr ial Reuse
5
lBndscape Irrigation and
l ~und ITEf1tS
20
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
California Water Shortage (Billion Cubic Meters per Year)
Lov A1erage High Average Lo Drought High Drought
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Development of the Reclamation Concept Municipal Uses
Agricultural Uses
Aquitard
400 Ft Aquifer
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Seawater Intrusion Barrier
Groundvater Flolv Inland due to Basin Pumping
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Technical Issues and Public Concerns Remain
+ Constant effluent supply vs variable demand + Reliability of treatment systems to assure
high quality at all times bull 1 _middot ~ bull Water quality issuest middot
bull disinfection by-products trace amounts of NDMAs pharmaceuticals endocrine disrupters emerging pathogens etc
+ Public opinionacceptance barriers bull human origin (the Yuck factor)
bull~dustrial input amp household products
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
MICROFILTRATION CARTRIDGE FILTERS REVERSE OSMOSIS AND ADVANCED (UV) OXIDATION AT OCWD
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
California Model IPR
Surface Water (nutrients)
Namibia Model (No RO)
Gwinnen County IPR
Cloudcraft Model (MBR)
Figure 6-1 Potable reuse treatment scenarios (Chalmers et al 2011)
Regardless of the end use and desired reclaimed water quality there
are technologies available to treat water to whatever level is required
for the targeted end use In a1ddition to successful implem1entation of
current advanced treatment technologies for producing reclaimed
water there is ongoing research into optimizing these processes and
investigating emerging technologies to meet treatment objectives for
both pathogens and chemical constituents
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
1
2
3
4
5
6
7
8
WEFAWWA
NWRI - A Path Forward
NRC
State of the Science Report and Equivalency Criteria for Treatment Trains (WRRF 11-02-2)
Australian Academy of Technological Sciences and Engineering -Australia-specific
Direct Potable Reuse Resource Document (TWDB) - Texas-specific
Framework for Direct Potable Reuse (AWWA NWRI WEF and WateReuse)
EPA Potable Reuse Supplement
2008
2011
2012
2013
2013
2015
2015
2015
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
TECHNOLOGIES FOR THE INDIRECT AND DIRECT POTABLE REUSE
Flow equal atJOn added fn the new Threshold inhibtor facdrty expansKJn (SU WlC aad
o o ther)
Effluent ______ Chloraminc Cartridge Break r~lter Submergedpump tilterstankscreen m1crof1ltrat1ontatton
Return lo wATP
Filtered secondary
emuent
Hdrogen poroxido
UV acrvanced LimeoXJdation and Decarbonator Pump [ To mJecbonRO feed Reverse station wel sos nfection (C()i strpper)pump
~ i-----4shyl -- To spreading
StablbzaUon basins AdvancedDecarbonal1on Concentrate to treatedbypass to balance disposal wafer (ATW)hardness
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
INDIRECT VERSUS DIRECT POTABLE REUSE
Drinkii wa~ M~anceo vater
lltamen1 IAIGt~aa bull irntilt raclnt(DWT~1 C01mitli1 realmem aaciuy (AII1t-)
SW
SUr1AC~ A-Star ~toraIO ~IOI Trea1eo COllC~I ~
W11s1eN3~t wfle1e RO no1rbull~ r IJSad
Indirect potable reuse (IPiR) San Vicent e reservoir San Diego CA
Altlitanced treated vater (ATW)
Surface water or groundwaler
u nder the fluence omiddotr surface wabuller
D ing Advanced vraer treatment wastawatu wal~r treatment faa ty (DWlF) Community 1reament rac111ty (AWTf) ----
L----1
Engineered )lorage
Treated concenaate buer (eSB wutewritebull Viitiere RO (optional) not fOCCled ~used
Direct potable reuse (DPR)
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Namibia Model bull OPR bull No RO
Cloudcroft Model bull DPR bull MBA __
B ig Springs Model bull DPR bull UV-AOP
Wichita Falls Model bull OPR bull UV WWTP
Singapore Model bull IPR bull UV WWTP
California Model bull IPR bull UV-AOP
Upper Occoquan Service Authority (UOSA Model bull IPR bull
Chlorination
Gwinnett County bull IPR bull OzoneBiofiltration
an Diego Advanced Waler Purification Demonstration Projectbull Demo Only bull lN-ADPBAC OioneBACFull Advanced Treatment
Buffers Blends
~ Aquifer ~ Surface Water Body 0 Spring and Well Water 0 Surface Water
Blending occurs in engineered storage buffer (holding lagoon) bullbull Only re uires chlorination after residence time
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
TSS turbidity some protozoan Microfiltration Pressure differential 005 oocysts and cysts some bacteria
and viruses Macromolecules conords most Ultramtration Pressure dlfferenUal 0002-0050 bacteria some viruses rotelns small molecules someNanofiltratlon lt0002I Pressure differential hardness viruses Very small molecules color
Reverse Osmosis Pressure differential lt0002 hardness sulfates nitrate sodium other ions
1 Information taken from California Department of Public Heatth (2012 Metcalf amp Eddy (2003) 2 Information from Watpoundyen Treatment Membrane Processes (AWWA 1996)
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Bacteria x x x Protozoa and helminths x x x Viruses x x
Indicative Log ReducUons in Varimiddotous Stages of Wastewater Treatment1
Secondary treatment 1 - 3 05 - 1 05- 25 - 3 05 - 2 05 - l 5 05- 1 0 - 2 Dual media filtration1 0- 1 0 - 1 1 - 4 0 - 1 05 - 3 1 - 3 l5 - 25 2 - 3 Membrane filtration (UF NF and R0)1 4 - gt6 gt6 2 - gt6 gt6 2 - gt6 gt6 4 - gt6 gt6
Reservoir storage 1 bull 5 NIA 1 bull 4 1 bull 5 1 bull 4 3 4 1 35 15 gt3
Ozonation 2middot6 0 05 2-6 2middot6 3middot6 2middot 4 1 2 NIA UV disinrecoon 2 gt6 NIA 3 gt6 2 gt6 1 -gt6 3 gt6 3 gt6 NIA Advanced oxidation gt6 NIA gt6 gt6 gt6 gt6 gt6 NIA Chlorination 2 gt6 1 bull 2 0 25 2 gt6 1 bull 3 05 15 0 05 0-1
(Sources Bitton 1999 EPHC 2008 Mara and Horan 2003 NRC 1998 NRC 2012 Rose et al 1996 Rose et al 2001 EPA 1999 2003 2004 W HO 1989)
1Reduction rates depend on specific operating conditions such as retention times contact Limes and concentrations or chemicals used pore size filter depths pretreatment and other ractors Ranges given should not be used as design or regulatory bases-they are meant 1to show relative comparisons only gtIncluding coagulation 3Remova1 rates vary dramatically depending on the installation and maintenance of the membranes NlA =not available
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Table 6-4 Categories of trace chemtcal constituents (natural and synthetic) potentiaUy detectable in reclaimed water and illustrative example chemicals NRC 2012)
End use Category I Exampres
Industrial chemicals 14-Dioxane perfiurooctanoic acid methyl tertiary butyl ether tetractltoroethane Pesticides blocldes and herbicides Atrazlne llndane dluron flpronil Natural chemicals Hormones (17(3-estradiol) phytoestrogens geosmin 2-methylisoborneol
Pharmaceuticals and metabolites Antibacterials (sulfamethoxazole) analgesics (acetominophen ibuprofen) beta-blockers (atenolol anliepileptics (phenytoin carbamazepine) veterinary ancJ human antibiotics (azjthromycin) oral contraceptives (ethinyl estradiol)
Personal care products Triclosan sunscreen ingredients fragrances pigments Household chemicals and rood additives
Sucralose bisphenol A (BPA dibutyl phthalate alkylphenol polyethoxylates flame retardants (perfluorooctanoic acid perfluorooctane sulfonate)
Transformation products NOMA HAAS and THMs
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
Secondary nd 10-50 nd 10- 50 gt90 nd gt90 nd 50- 90
(activaled slud e) Soil aquifer nd nd nd 25-50 gt90 gt90 gt90 gt90 nd gt90 gt90 treatment Aquifer storage nd 50-90 10-50 50-90 50- 90 Nd gt90 nd
Microfiltration nd lt20 lt20 lt20 lt20 lt20 lt20 lt20 nd lt20 Ultra filtration powdered activated carbon PAC)
nd gt90 gt90 gt90 gt90 gt90 nd gt90 nd gt90 gt90
NanofiJtralion gt80 50-SO 50-80 50-SO 5()-8() 50-80 50-SO 50-80 50-SO 50-80
Reverse osmosis gt80 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 gt95 25- 50
PAC gt80 20-gt80 50-80 50-80 20-50 lt20 50--80 5()-80 50--80 50- 80 Granular activated
gt90 gt90 gt90 gt90 gt90 gt90 gt90 gt90 carbon
Ozonalion gt80 gt95 50-80 50-80 gt95 50-80 gt95 gt95 gt80 50-90 50-90
Advanced oxidation 50-80 50-80 gt80 gt80 gt80 gt80 gt80 gt80 50- 80 gt90
High~level ultraviolet 20-gt80 lt20 2()-50 gt80 20-50 gt80 gt80 20-50 nd gt90
Chlorination gt80 gt80 20-50 - lt20 gt80 lt20 gt80 gt80 lt20 20-gt80
Chlorami nation 50-80 lt20 lt20 lt20 50-80 lt20 gt80 gt80 lt20 lt20 (Sources Ternes and Joss 2006 Snyder el al 201 O) Ba)p = benz(a)pyrene CBZ = carbamazepine DBP = disinfection by-product DCF diclofenac DZP diazepam IBP = ibuprofen NDMA=Nshynicrosodimcthylaminc nd bull no daia PAC bull powdered acuvatcd carbon PCT bull paracciamol 1 erythmmycin sulfamelhoxazole triclosan lrimelhoprim 2 ethynylestradiol estrone esuadiol and estriol 1 progesterone testosterone
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE
MOVING TOWARD WATER RESOURCE
RECOVERY FACILllilES
put Cm
ENABLING THE FUTURE