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Wastewater Treatment Technologies at BWWTP in the Light of Extreme Conditions of
Climate Change
Enikő SzabolcsBudapest Waterworks
Pristina, Kosovo, 6-8 November 2019
History of Budapest Waterworks
2
Foundation Privatization Repurchasing
Water tower in Margit-sziget
Budapest CentralWastewater Treatment Plant
1868
1913
1997 2012
1945 2013Undisturbed water supply during World War II in Budapest
Tradition and Innovation
Key Indicators of the Company
3
• 5380 km water network• 1 million m3 daily capacity• 756 wells• 2 water treatment plants
• 550 km sewer network • 98 million m3/year treatment• 370 000 m3 daily capacity • 7 wastewater treatment plants
Drinking water Sewage
• 2 426 000population served
Clients Revenue137 million USD revenue*, of which:• 87 million USD portable water• 30 million USD wastewater• 20 million USD export and other* 2018
Key Competencies
4
• Work Force Management
• Development of Operation Center
• SCADA system installation
• Contact Center
• Non revenue water
Operational processes Construction activities Engineering activities
• Water treatment plantconstruction
• Installation of Mobil Water Purification Equipment
• Pressure management
• Water loss analysis
• Water quality projects
ENTERPRISE MODERNIZATION
International Activites
5
Overseas Partners
6
ALBANIA - Tirana Water Utility Company (Ukt)AUSTRIA - Aqua EngineeringCUBA - National Water Resources InstituteECUADOR - Empas - Aqua De QuitoGrundfos - South East Europe Ltd.HUNGARY - MOLINDIA - Tecton Engineering And ConstructionINDONESIA, Jakarta - Regional Drinking Water Supply CompanyINDONESIA, Jakarta - Regional Waste Water Management CompanyINDONESIA, Jakarta - The Pt Jakarta Utilitas Propertindo (Jakpro)ISRAEL - Booky Oren Global Water TechnologiesISRAEL - Tel Aviv Mekorot Water Company Group LtdJORDAN - Taff Contracting Establishment CompanyLAOSZ - Vientiane Water Authority, Department Of Public Works And Transportation (Dpwt) Of Vientiane CapitalMACEDONIA - Water and Land Solutions DooelMEXICO - Tabasco - Dasur S.A. De C.V., And AneasSERBIA – Belgrade Waterworks And SewerageSERBIA - Subotica WaterworksSINGAPORE - Public Utilities Board (Singapore's National Water Agency).SRI LANKA - National Water Supply And Drainage BoardTHE GLOBAL WATER OPERATORS’ PARTNERSHIPS ALLIANCE
THE UNITED NATIONS HUMAN SETTLEMENTS PROGRAMMETURKEY - Ankara Disaster And Emergency Management Presidency Of Turkey (AFAD)TURKEY - Ankara Water And Sewerage AdministrationTURKEY - Istanbul Water And Sewerage AdministrationVIETNAM - Hanoi - HawacoWORLD BANK
WWTP of Budapest Waterworks
7
• The Budapest Waterworks operates 7 wastewater treatment plants
• The Budapest Central Waste Water Treatment Plant (BCWWTP) is located in Budapest, and this is the biggest plant
Fővárosi Vízművek Zártkörűen Működő Részvénytársaság • www.vizmuvek.hu • [email protected]
Ke
len
föld
Pu
mp
ing
station
Fere
ncváros
Pu
mp
ing
station
FINE SCREENS (3 mm)6+2 units
SEDIPAC 3D®
Grit removal, grease flotation,Primary sedimentation)
7 (+1 standby) units
CLARIFIERS17 (+1 standby) units
BIOLOGICAL TREATMENT(pre-anoxic,anaerobic,
aerobic/anoxic zone)17 (+1 standby) units
Slu
dg
e, N
O3
Rec
ircu
lati
on
4 375 m3/h21 875 m3/h
37 500 m3/h
11 250 m3/h26 250 m3/h
Flow meters
Outlet to Danube
Greaseevacuation
Conveyor2+
Compactor2
Gritclassifier
2 db
Grit
Sludge
Screenings
Grit Deposition
Deposition
Greace
Sludge
GRITREMOVAL
3 Units
DRAINING TABLES5 (+1 standby)
GRAVITATY THICKENERS2 (+1 standby)
TERMOFIL ANAEROBIC DIGESTERS3 reactors
DEWATEREDSLUDGE TANKS
4 TANKS
MIXED SLUDGETANK1 tank
Biogasholder
2
PASTEURISATION2 (+1 standby) lines
1 line = 3 tanks
DIGESTED SLUDGETANK
CENTRIFUGES3 (+1 standby)
Recultivation (Mun)
COGENERATION2 (+1 standby) lines
Polymerisation2 units
Ferric-chloridedosing
FeCl3
BIOLOGICAL SLUDGE THICKENER
StormWaterClarifier(4 Units) NITROGEN
REMOVAL (DEMON®)(2 units)
FeCl3
Poly
Ferric-chloridedosing
POLYMERISATION2 units
Archimedes screw generator
Introduction of the Technology
Grit, grease removal + primary sedimentation 26 250 m3/h
Secondary clarifiers Σ 105 000 m3
Activated sludge technology (18 parallel lines ) 21
875 m3/h
Finescreens (3 mm) 37 500 m3/h
Climate change’s relation to wastewater
• Reduced precipitation -drought
• Long periods without precipitation followed by extreme strong flash rains
• Increase of average temperature
• Phosporus problems in the plant in parallel phosporusproblem in the world
Impact of the dry period on the sanitation system
• Accumulation of solid waste sediments and incrustation in sewerage conduits that can cause its clogging
• Water rotting in the system attended bybad sedimentationcapacity
• Inflow wastewater will be more dense
Impact of the storms and heavy rains on the sanitation system
• Larger body of water will arrive at the sites
• More TSS content
• More aeration is needed
Increasing air temperature affects processes of UWWT
• Warm wastewaterincreases the bacterial reaction rate which reduces the density of settled sludge
• Lower oxygen solubility in warmer water cause higher consumption of compressed air in biological treatment
0
2
4
6
8
10
12
14
16
0 5 10 15 20 25 30 35 40 45 50
Oxy
gen
So
lub
ility
(m
g/l)
Temperature (C°)
Oxygen Solubility (mg/l)
Solutions
• Periodically clean pipelines / roads
• New facilitiesspearate storm waterfrom wastewater
• Green rooftops
Phosporus removal
• Phosphorus is an irreplaceable building block in all living cells
• Phosphorousremoval from wastewater can be a source of phosphorous recovery in long term
How we reduce footprint at BCWWTP 1/2
• Covered and ventilated process structures• Extracted air treated by biological and
chemical odour treatment units• Architecture and Landscaping fits to
surrounding area (70% of the surface area is GREEN)
• Biogas used for energy production and heating (by termophilic digestion)
• Solar powered water heater in the office building
How we reduce footprint atBCWWTP 2/2
Reduced footprint due to the technology:
• Primary Treatment: (lamellar primary settler)
• Biological Treatment:Anaerobic zone under the clarifier
BCWWTP Conventionalsolution
Mechanical PretreatmentUnits(Footprint 3-4 times less)
Wastewater
Primary sludge
Grease
Grit
Primary sludge
Questions?We warmly welcome You at BCWWTP
Budapest Waterworks Wastewater Operation Division
Enikő Szabolcs
Operation EngineerMobil: +36 30 515 0265E-mail: [email protected]: www.vizmuvek.hu
Thank you for your attention!
