© 2006, koch membrane systems, inc. all rights reserved. mbr technology for water reuse in...

© 2006, Koch Membrane Systems, Inc. All rights reserved.


MBR Technology for Water Reuse inMunicipal & Industrial ApplicationsMBR Technology for Water Reuse inMunicipal & Industrial Applications

Christoph KullmannBusiness Development Manager

Submerged PURON® MembranesKoch Membrane Systems

Christoph KullmannBusiness Development Manager

Submerged PURON® MembranesKoch Membrane Systems



Koch Membrane SystemsKoch Membrane Systems



MF – UF – NF – ROMF – UF – NF – RO

Hollow fiberHollow fiber SpiralSpiral TubularTubular



Conventional biological wastewater treatmentConventional biological wastewater treatment

SGFPCBS

= Step screen= Grid and fat removal= Primary clarifier= Biological step

STTC

= Sedimentation tank= Third cleaning step (e.g. filtration + desinfection ozon or UV)

Conventional Process

Raw wastewater

S

Effluent

TCGF PC BS ST



First use of membranes in biological WWTFirst use of membranes in biological WWT

SGFPCBS


STTCMT

= Sedimentation tank= Third cleaning step (e.g. filtration)= Membrane technology

Effluent treatment with membrane technology – tertiary treatment

Raw wastewater

Effluent

S GF PC ST TCBS MT

Permeate



Raw wastewater

S

Effluent

TCPC BS STGF

What changes if you come to an MBR?What changes if you come to an MBR?

SGFPCBS


STTC

MT

= Sedimentation tank= Third cleaning step (e.g. filtration + desinfection ozon or UV)= Membrane technology

Membrane bioreactor (MBR)

BSFS MT

Permeate

Combination of biological step and solid liquid separation



membrane bioreactor Membrane bioreactorMembrane bioreactor

Advantages of MBR over Conventional WWTP

Advantages of MBR over Conventional WWTP

Considerably improved water quality

Possibility for water reuse

Reduced footprint (approx. 50 %)

Avoids the problem of bulking and floating sludge

conventional plants

primary treatment

biological step clarifier

Conventional plantsConventional plants

Advantages:AdvantagesAdvantages

Lower life-cycle cost than conventional + UF for reuseLower life-cycle cost than conventional + UF for reuseLower life-cycle cost than conventional + UF for reuse



MBR with submerged modules - different configurations

MBR with submerged modules - different configurations

RC

RCRLMFNDN

recirculationreturn linemembrane filterNitrificationdenitrification

MFDN N

Internal submerged MBRInternal submerged MBR

RCRL

DN N MF

External submerged MBRExternal submerged MBR



The PURON® hollow membraneThe PURON® hollow membrane

SEM photo of pores (~10000x)

Membrane bundleMembrane bundle

SEM photo of pores (~10000x)SEM photo of pores (~10000x)



Modular design of PURON moduleModular design of PURON module

Fibersupport

air

Permeate

air

Permeate manifolds

air

Membrane bundleMembrane bundle Module rowModule row ModuleModule



The PURON® ModuleThe PURON® Module



Classification of membrane processesClassification of membrane processes

0,050,05



Comparison microorganisms – membrane poresize

Comparison microorganisms – membrane poresize

poresize ~ 0,01 µm

ultrafiltration

poresize ~ 0,2 µm

microfiltration

E. Coli ~ 0,5 - 1,5 µm

MS2-Virus (Coliphage)~ 0,025 µm

B. Subtilis~ 0,3 µm



MBR provides better effluent qualityMBR provides better effluent quality

MLSS content in aeration tank

Ptotal with precipitation

COD

Solids

Parameter

< 5< 20g/l

0,8 – 1,0< 0,3mg/l

40 – 50< 30mg/l

10 –150mg/l

convent. plant

MBR



Reduced footprintReduced footprint

Space requirements

source: D. Lawrence 2004



Municipal MBR Kaarst – Germany (80.000 p.e.)

Municipal MBR Kaarst – Germany (80.000 p.e.)

source: N. Engelhardt Erftverband 2004



Reduction of footprint by MBR technology in Kaarst (Germany, 80,000 p.e.)

Reduction of footprint by MBR technology in Kaarst (Germany, 80,000 p.e.)

Conventional plant Membrane bioreactor plant

source: N. Engelhardt Erftverband 2004



Market areas for MBR technologyMarket areas for MBR technology

Membranebioreactors

leachate

municipal wastewater textile

industry

industriallaundries

pulp &paper

tank cleaning

beverageindustry

dairyindustry

vegetableindustry

fruitindustry slaughter-

house /rendering

petrochem.industry

chemical industry

pharmac.industry



Industrial InstallationsIndustrial Installations



Joe White Maltings (Australia)Joe White Maltings (Australia)

• Malting industry

• PURON® MBR + MegaMagnum® RO




ProblemProblem

• Expanding production

• Increased demand on fresh water

• Water shortage (Australia)

GoalGoal

• Water savings through partial water recycling by means of RO

• Looking for ideal pretreatment to feed the RO



RO Pretreatment OptionsRO Pretreatment Options

PretreatmentBacteria

& SS removal

BOD removal

Small footprint

EconomicsPrevention of

organic fouling & scaling in RO

Conventional – – – – – – –

Convent. + Tertiary 0 0 – – – –

Conv. + Tert. + UF + + + – – – + +

MBR + + + + + + + + +

+ ++ + excellentexcellent ++ goodgood 00 averageaverage – –– – poorpoor –– very poorvery poor




Fresh water

Steeping

Pre-screening

Wastewater

buffertank

Excess sludge

ROCIP tank

Barley

DischargeProcess

BiologyUF

MBR




Biological process tankBiological process tank

MegaMagnum RO® elementsMegaMagnum RO® elements

Submerged PURON® modulesSubmerged PURON® modules




Commissioning of PURON® modulesCommissioning of PURON® modules

© 2006, koch membrane systems, inc. all rights reserved. mbr technology for water reuse in...

Documents

reuse slide

puron module slide

step screen

cleaning step

combination of biological

mbr technology

biological step st tc

biological wwt s gf