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Reducing fresh water consumption in high water volume consuming industries by recycling AOP-
treated effluents “AOP4Water”
Zmanjševanje porabe svežžžže vode v industriji s ponovno uporabo (recikliranjem) oččččišččččenih odpadnih voda
Predstavitev zaključčččnih rezultatov projekta
Gospodarska zbornica Slovenije, 19.6.2013
Era-net Cornet projekt za industrijska združžžženja, januar 2011- junij 2013 (www.cornet-aop4water.eu)
Projekt se izvaja v okviru programa Cornet sofinanciranega s strani MGRT
Glavni cilji AOP4Water projekta:
�Zagotavljanje novih virov vode za potrebe industrije, ki so
veliki porabniki vode, s ponovno uporabo očiščenih odpadnih
voda iz papirne, tekstilne in živilsko predelovalne industrije ter
očiščenih komunalnih odpadnih voda
�Ključ do ponovne uporabe (recikliranja) vode je izboljšana
učinkovitost čiščenja odpadnih voda s pomočjo kombinacije
različnih AOP in biološkega čiščenja
�Uporaba minimalnih količin O3 z namenom prepustiti končno
razgradnjo cenejši biološki stopnji čiščenja in tako zmanjšati
celokupne stroške čiščenja odpadne vode.
4
5
Začčččetno stanje
• O3 za napredno čiščenje odpadnih vod � veliko prednosti, dobri rezultati in
izkušnje
• VENDAR: ni vedno ekonomična rešitev
• Da bi čiščenje z O3 naredili bolj privlačno � kombinacija z H2O2, UV,
ultrazvokom
• Regije s pomanjkanjem pitne vode � potrebni so novi viri vode
6
AOP pri ččččišččččenju odpadnih vod
• Ozon:
�Spremeni preostanek KPK v biološko razgradljive komponente
�KPK ↓, BPK5 ↑, BPK5/KPK ↑
ozoniranje biofilterbiološko čiščenjeproizvodnja papirja
izpust v vodno telo
7
Cilj
• Ponovna uporaba AOP-očiščenih odpadnih vod namesto sveže pitne vode
• Ponovna uporaba v:
• proizvodnji papirja in celuloze
• tekstilni industriji
• Vir so odpadne vode iz:
• proizvodnje papirja in celuloze
• živilskopredelovalne industrije
• tekstilne industrije
• komunalne odpadne vode
Ključ do ponovne uporabe:
• Izboljšati učinkovitost AOP-čiščenja z namenom:
� zagotoviti optimalno kvaliteto vode
� pokazati možne uporabe očiščenih odpadnih vod.
8
Izvedba
WP 8
sustainability studies
WP 2Factory investigations
WP 3AOP trials with effluents
(paper mills, textile, municipal, food)
WP 4 Biodegradability-trials
WP 5 Mathematical Modelling (Data
analyses and system identification)
WP 6Impact of water(re-)use on process
water and product quality
WP 7Water-treatment concepts
AQP
AQP
UL
UL
PTS
Celabor
Celabor
WP 1Coordination
WP 9
Dissemination and use
PTS
PTS
9
AOP pilotna naprava
rezervoar
UV> 40 mJ/cm2λ = 253nmMax. discharge: 15 L/min
Redox, pH, O2
Vodna črpalka
2.4 L/min
Ozon generator: 500 mg/h
Zračna črpalka: 4-5 L/min
Ventouri ozon injektor
Analizator
ozona
BMT 964 C,
Messetechnik
Katalizato
r
Rotameter
Ozon reaktor
Sušilec zraka
Papirna odpadna voda
10
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Original O3 O3 + H2O2 UV + H2O2 O3 + UV O3 + UV + H2O2
Rem
ain
ing
CO
D-s
har
e
Outlet Final Clarifier Outlet AOP Outlet Biofilter
1,0 g O3/g COD0 0,8 g O3/g COD0
+ 0,2 g H2O2/g COD0
0,8 g O3/g COD0
+ UV 60 kWh/m³
0,8 g O3/g COD0
+ 0,2 g H2O2/g COD0
+ UV 60 kWh/m³
UV 60 kWh/m³
+ 0,2 g H2O2/g COD0
11
Mill A +B: O3 – BOD5/COD
0
2
4
6
8
10
12
14
16
18
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4
SOD [g O3/g COD0]
BO
D5 [
mg
/l]
0,00
0,04
0,08
0,12
0,16
0,20
0,24
0,28
0,32
0,36
BO
D5/C
OD
[-]
BOD5 Mill A
BOD5 Mill B
BOD5/COD Mill A
BOD5/COD Mill B
BOD5/COD
BOD5
ŽŽŽŽivilsko predelovalna odpadna voda
Najbolj učinkovita se je izkazala kombinacija ozona + UV
�Učinkovita dezinfekcija
�Učinkovito razbarvanje
�Zmanjšanje motnosti
�Zmanjšanje KPK in BPK5
16
Primerjava papirne in tekstilne odpadne vode
17
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
O3 H2O2 UV + H2O2
Rem
ain
ing
sh
are
COD a436nmCOD a436nm
paper
textile
Dezinfekcija komunalne odpadne vode
Ozonation
• TCB and E. coli – removal
within 20 minutes (8,3 g
O3/m3)
AOPs combinations – higher
efficiency for microbes removal
not proven
18
Example: BOD5/COD with M5P Model Tree
21
Rule: 4
BODvsCOD_r = 0.1283 * SOD + 0.0135 * UVvsCOD + 0.0287 * H2O2vcCOD
+ 0.0054 * CODvsDOC_i - 0.4014 * BODvsCOD_i + 0.0493
Correlation coefficient 0.9295
Vpliv uporabe AOP oččččišččččene vode na barvo papirja
22
-5
-3
-1
1
3
5
7
9
11
-11 -9 -7 -5 -3 -1 1 3 5 7 9 11
a*
b*
Ref. Sc_1 Sc_2 Sc_3 Sc_4 Sc_5 Sc_6
blue redgreen
yellow
50 % WW 1
50 % AOP
Paper
100 % AOP
50 % WW 1
50 % AOP 100 % AOP
50 % WW 1
50 % AOP 100 % AOP
Food processing Municipal wastewater
100 % WW 1
23
0
250
500
750
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
3750
4000
Basis Sz_1 Sz_2 Sz_3 Sz_4 Sz_5 Sz_6
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
Modulus of elasticity N/mm² Tensile strength kN/m
Breaking elongation % Bending stiffness Nmm
50 % WW
50 % AOP
Paper
100 % AOP
50 % WW
50 % AOP 100 % AOP
50 % WW
50 % AOP 100 % AOP
Food processing Municipal Wastewater
100 %
WW
Vpliv uporabe AOP oččččišččččene vode na mehanske lastnosti papirja
Modul elastičnosti N/mm2Raztezek pri utrgu
Natezna trdnost kN/mUpogibna togost N mm
24
Bleaching testsH2O2 35 % 5 hours at 80 °C at pH 9 - Unbleached cotton.
Bleaching before light dye, no need if dark color
Check pH stability before and after bleaching
CIE whiteness at daylight (ISO11475 :2004) CIE
Control tissue A (no bleaching) 21.33
Control tissue B (no bleaching) 20.61
Bleached with agro food treated water A 37.60
Bleached with agro food treated water B 37.98
Bleached with textile 2 treated water A 58.29
Bleached with textile 2 treated water B 58.04
Bleached with textile 1 treated water A 57.89
Bleached with textile 1 treated water B 57.58
Bleached with paper mill treated water A 28.22
Bleached with paper mill treated water B 27.64
Bleached with tap water A 57.31
Bleached with tap water B 57.78
0 black100 white
Duplicate comparable:uniform bleaching
Treated water
- from textile = as tap water
- from agro food - paper =
not for bleaching (color, hardness,
particles), only re-used for dark dyes.
Vpliv uporabe AOP oččččišččččene vode na beljenje in barvanje tekstila
25
Light dyeing testLight dyeing pink with anionic dye – polyester cotton
Visual score: 3.5 2 4 4.5 4.5
Tap water Paper mill Textile 1 Textile 2 Agro –food
After bleaching
After pink dyeing
26
3. Light dyeing test
Tissue L* a* b*
Tissue dyed with agro food treated water A 81.26 19.9 -5.99
Tissue dyed with agro food treated water B 81.34 19.74 -5.89
Tissue dyed with textile 2 treated water A 82.06 19.54 -6.7
Tissue dyed with textile 2 treated water B 81.6 20.14 -6.35
Tissue dyed with textile 1 treated water – Extreme pink A 80.73 20.18 -5.02
Tissue dyed with textile 1 treated water – Extreme pink B 80.83 19.91 -4.8
Tissue dyed with textile 1 treated water – Extreme white A 83.2 18.02 -5.36
Tissue dyed with textile 1 treated water – Extreme white B 83.57 17.64 -6.09
Tissue dyed with paper mill treated water – Extreme pink A 78.26 20.48 -4.59
Tissue dyed with paper mill treated water – Extreme pink B 79.51 20.26 -5.01
Tissue dyed with paper mill treated water – Extreme white A 85.48 13.64 -4.79
Tissue dyed with paper mill treated water – Extreme white B 85.19 13.96 -5.49
Tissue dyed with tap water – Extreme pink A 80.65 20.23 -5.1
Tissue dyed with tap water – Extreme pink B 81.3 19.99 -5.17
Tissue dyed with tap water – Extreme white A 82.35 18.51 -5.71
Tissue dyed with tap water – Extreme white B 82.5 18.69 -5.54
Uniform dye: 2 measurements
Non-Uniform dye: 4 measurements
Colorimetric Lab test: L for lightness and a and b for the color-opponent dimensions
For light dyeing: tap water not the best uniform pink color
27
• Important step in textile process = bleaching = preliminary step for light dyeing
• Different treated waters = different advantages depending on their use
- For bleaching tests : good results for tap and textile water.
- For light dyeing: agro food water and textile 2
- For bleaching + light dyeing, AOP treated textile water 2 the best.
- For dark dyeing, all treated waters ok.
• If dark dyeing, all treated waters ok. Characteristics needed:
- stable pH with T
- soft water (hardness precipitates the soap during washing).
- few ions in solution
- no heavy metals (catalyzer of bleaching, risks for tissues and human health
28
-100,0
0,0
100,0
200,0
300,0
400,0
500,0
600,0
700,0
800,0
Classical treatment Classical treatment and AOP-treatment Classical treatment and AOP-treatment
and reuse
µP
t
Mineral extraction
Non-renewable energy
Global warming
Aquatic eutrophication
Aquatic acidification
Land occupation
Terrestrial acid/nutri
Terrestrial ecotoxicity
Aquatic ecotoxicity
Respiratory organics
Ozone layer depletion
Ionizing radiation
Respiratory inorganics
Non-carcinogens
Carcinogens
The impact on the environment is more than doubled BUT the quality is higher!
If the treated water can be reused, 1m³ of fresh water is avoided and the environmental impact is lower
Zaključčččki
�Kombinacije O3 in H2O2, UV ter kavitacije bolj učinkovite kot samo ozon
(izjema papirna industrija)
�Najbolj učinkovita kombinacija: O3 + UV + biološka faza
�Z uporabo ozona smo zvišali razmerje BPK/KPK – težko biološko
razgradljive snovi so postale lažje biološko razgradljive
�AOP očiščena odpadna voda iz vseh treh preiskovanih industrijskih
sektorjev in AOP očiščena komunalna odpadna voda sta primerni za
ponovno uporabo v proizvodnem procesu tekstilne in papirne industrije
29
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