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•• Introduction to EPS BisonIntroduction to EPS Bison•• MBR Technology MBR Technology ––History & DevelopmentHistory & Development•• MBR The TechnologyMBR The Technology•• MBR ApplicationsMBR Applications•• Case StudiesCase Studies•• EPS Bison Clereflo MBR PlantsEPS Bison Clereflo MBR Plants•• Operation & MaintenanceOperation & Maintenance•• Capital & Operating CostsCapital & Operating Costs•• ConclusionsConclusions
EPS Bison EPS Bison
•• Strategic Business Unit of EPS Group formed March 2002Strategic Business Unit of EPS Group formed March 2002
•• Specific Purpose of Design / Supply / Installation / CommissioniSpecific Purpose of Design / Supply / Installation / Commissioning & ng & Servicing of Packaged Treatment Solutions Servicing of Packaged Treatment Solutions
•• Product Range : Product Range :
Packaged Treatment Systems Packaged Treatment Systems Packaged Pumping Stations Packaged Pumping Stations Attenuation / Storage / Sprinkler Systems Attenuation / Storage / Sprinkler Systems Interceptors/Separators / Grease Traps Interceptors/Separators / Grease Traps Septic Tank Retrofit SystemsSeptic Tank Retrofit SystemsRain Water Harvesting Systems Rain Water Harvesting Systems Above Ground Engineered Vessels Above Ground Engineered Vessels
EPS Bison EPS Bison
•• Full Design & Provision of Turnkey SolutionsFull Design & Provision of Turnkey Solutions
•• Assistance from initial design stage through planning Assistance from initial design stage through planning
process to project delivery process to project delivery
•• Assistance with all aspects of design for disposal Assistance with all aspects of design for disposal
including Assimilative Surveyincluding Assimilative Survey’’s and Discharge Licence s and Discharge Licence
ApplicationsApplications
MBR Technology History & MBR Technology History & Development Development
•• First commercialised in 70First commercialised in 70’’s & 80s & 80’’ssSmall scale applications : Small scale applications :
On board shipsOn board shipsLandfill leachateLandfill leachate
High strength industrialHigh strength industrial
MBR Technology History & MBR Technology History & DevelopmentDevelopment•• Japanese Govt. initiative for initial development Japanese Govt. initiative for initial development
•• In Europe First Plant Porlock WWTP 1998 (3800pe)In Europe First Plant Porlock WWTP 1998 (3800pe)
•• BBüüchel Germany 1999 ( 1000 pe )chel Germany 1999 ( 1000 pe )
Membrane filtration is a liquid separation process in conjunction with the activated sludge process that treats and removes pollution from wastewater producing two outputs:
AdvantagesAdvantages•• High quality final effluent High quality final effluent •• No primary or Secondary Settlement No primary or Secondary Settlement –– low land area low land area
requirementrequirement•• Treatment option for high strength or variable strength Treatment option for high strength or variable strength
effluents effluents •• Lower Sludge production (0.8kg/kgbod)Lower Sludge production (0.8kg/kgbod)•• Sludge Haulage Costs ReducedSludge Haulage Costs Reduced•• Retrofittable /ModularRetrofittable /Modular
Screening &Grit Removal
Primary SettlementSecondary Treatment
‘Biological’ Stage
Final Settlement
TreatedWater
Conventional WwTWConventional WwTW
DisinfectionSand Filtration
MembraneMembrane BioreactorBioreactor WwTWWwTW
3mm ScreenMembrane
Reactor
Permeate
(disinfected)
Advantages over conventional plantsAdvantages over conventional plants
Process Principles
Screened crude sewage
Treated &disinfected
effluent
Waste Sludge(to further treatment)
In
Air in
Out
Process Principles
Kubota Membrane Units
• Includes aeration and filtration sections
• Standard Kubota units: 7 - 200 panels
• Double Deck design:300 and 400 panel
- reduced plan area
• Custom designs to fit application
• Gravity or suction operationDiffuser aeration
lower section
Membrane filtrationtop section (150 panel)Basic Product Range
Membrane Panels
Membrane Filtration
Air
Bacteria
Virus
Solids
Treated effluent
Membrane
Membrane Separation
0.001 0.01 0.1 1.0 10 100 1000
Bacteria
Coal dust Beach sand
Metal ions
Aqueous salts
μm (log)
Relative Particle Sizes
Ultrafiltration
Virus
Microfiltration
SeparationProcess
Effective pore size
Nominal pore size
Cryptosporidia Giardia
• Effluent fully disinfected without chemicals
• Near zero pathogen levels (protozoa, bacteria and virus) • > log 6 Bacteria• > log 4 Virus
• Consistent high quality effluent• - SS, BOD, COD• - NH3, NO3,,• - TP / Ortho P
2005 MBR Installations in Europe 2005 MBR Installations in Europe •• Industrial 285 units Industrial 285 units •• Municipal 105 units Municipal 105 units •• Household 250 units Household 250 units
(B.Lesjean & E. Huisjes : 2007 )(B.Lesjean & E. Huisjes : 2007 )
EPS References EPS References (installed/under construction )(installed/under construction )
•• More Stringent Discharge requirementsMore Stringent Discharge requirements•• Unique Developments in Sensitive areas Unique Developments in Sensitive areas •• Enhanced implementation of Phos. RegsEnhanced implementation of Phos. Regs•• Enhanced implementation of Nitrate DirEnhanced implementation of Nitrate Dir•• Local Authorities increased focus on Discharge Licences Local Authorities increased focus on Discharge Licences •• Need for 5:5:5:1 (BOD:SS:NH3:TP)Need for 5:5:5:1 (BOD:SS:NH3:TP)•• Identified MBR TechIdentified MBR Tech•• Developed For Irish market with Conder Products Developed For Irish market with Conder Products
Design PhilosophyDesign Philosophy
• To develop a process to satisfy EPS Bison client base (residential, hotels, caravan parks)
• Standardised design
• Off the shelf product range
• Domestic/Commercial wastewater only
• No screen/ solids removed by primary settlement
• Maximum acceptable flux of <0.4 m3/m2/d
• Quick turnaround
• Low cost design
Design PhilosophyDesign Philosophy
• Standardised plant items
• Only Standby items where essential
• Minimal instrumentation
• Minimal automatic control
• Low specification control panel
• Minimal maintenance requirements
Design PhilosophyDesign Philosophy
• The Clereflo does not have the following as standard but additional requirements can include
•• Housing Development ( Holiday Homes )Housing Development ( Holiday Homes )•• Commissioned Nov 2005Commissioned Nov 2005•• 250 pe 250 pe •• Standard Required ( 5:5:5:50:2)Standard Required ( 5:5:5:50:2)
( BOD/SS/NH3/COD/TP)( BOD/SS/NH3/COD/TP)•• Standard Achieved (<1.5:<5:<1.5:17:0.7)Standard Achieved (<1.5:<5:<1.5:17:0.7)•• Running Costs / Year (Running Costs / Year (€€))
•• Hotel Development Hotel Development •• Commissioned Feb 07Commissioned Feb 07•• 375pe C/w anoxic and UV375pe C/w anoxic and UV•• Standard Required (5:5:5:1:5 ) Standard Required (5:5:5:1:5 )
•• Hotel Development Hotel Development •• Commissioned Nov 06Commissioned Nov 06•• 375pe C/w Anoxic 375pe C/w Anoxic •• Standard Required ( 5:5:5:50:1:5 ) Standard Required ( 5:5:5:50:1:5 )
(BOD/SS/NH3/COD/TP/NO3)(BOD/SS/NH3/COD/TP/NO3)•• Standard Achieved (<1.7:<5:0.17:22Standard Achieved (<1.7:<5:0.17:22:0.5::0.5:<5)<5)•• Running Costs / year (euro)Running Costs / year (euro)