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© 2006, Koch Membrane Systems, Inc. All rights reserved. MBR Technology for Water Reuse in Municipal & Industrial Applications Christoph Kullmann Business Development Manager Submerged PURON ® Membranes Koch Membrane Systems
© 2006, Koch Membrane Systems, Inc. All rights reserved. Koch Membrane Systems
© 2006, Koch Membrane Systems, Inc. All rights reserved. MF – UF – NF – RO Hollow fiber Spiral Tubular
© 2006, Koch Membrane Systems, Inc. All rights reserved. Conventional biological wastewater treatment S GF PC BS = Step screen = Grid and fat removal = Primary clarifier = Biological step ST TC = Sedimentation tank = Third cleaning step (e.g. filtration + desinfection ozon or UV) Conventional Process Raw wastewater S Effluent TCGFPC BS ST
© 2006, Koch Membrane Systems, Inc. All rights reserved. First use of membranes in biological WWT S GF PC BS = Step screen = Grid and fat removal = Primary clarifier = Biological step ST TC MT = Sedimentation tank = Third cleaning step (e.g. filtration) = Membrane technology Effluent treatment with membrane technology – tertiary treatment Raw wastewater Effluent SGFPCSTTC BS MT Permeate
© 2006, Koch Membrane Systems, Inc. All rights reserved. Raw wastewater S Effluent TCPC BS STGF What changes if you come to an MBR? S GF PC BS = Step screen = Grid and fat removal = Primary clarifier = Biological step ST TC MT = Sedimentation tank = Third cleaning step (e.g. filtration + desinfection ozon or UV) = Membrane technology Membrane bioreactor (MBR) BS FS MT Permeate Combination of biological step and solid liquid separation
© 2006, Koch Membrane Systems, Inc. All rights reserved. membrane bioreactor Membrane bioreactor 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 stepclarifier Conventional plants Advantages: Advantages Lower life-cycle cost than conventional + UF for reuse
© 2006, Koch Membrane Systems, Inc. All rights reserved. MBR with submerged modules - different configurations RC RL MF N DN recirculation return line membrane filter Nitrification denitrification MF DN N Internal submerged MBR RC RL DN N MF External submerged MBR
© 2006, Koch Membrane Systems, Inc. All rights reserved. The PURON® hollow membrane SEM photo of pores (~10000x) Membrane bundle SEM photo of pores (~10000x)
© 2006, Koch Membrane Systems, Inc. All rights reserved. Modular design of PURON module Fiber support air Permeate air Permeate manifolds air Membrane bundle Module row Module
© 2006, Koch Membrane Systems, Inc. All rights reserved. The PURON® Module
© 2006, Koch Membrane Systems, Inc. All rights reserved. Classification of membrane processes 0,05
© 2006, Koch Membrane Systems, Inc. All rights reserved. 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
© 2006, Koch Membrane Systems, Inc. All rights reserved. MBR provides better effluent quality MLSS content in aeration tank P total 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
© 2006, Koch Membrane Systems, Inc. All rights reserved. Reduced footprint Space requirements source: D. Lawrence 2004
© 2006, Koch Membrane Systems, Inc. All rights reserved. Municipal MBR Kaarst – Germany (80.000 p.e.) source: N. Engelhardt Erftverband 2004
© 2006, Koch Membrane Systems, Inc. All rights reserved. Reduction of footprint by MBR technology in Kaarst (Germany, 80,000 p.e.) Conventional plantMembrane bioreactor plant source: N. Engelhardt Erftverband 2004
© 2006, Koch Membrane Systems, Inc. All rights reserved. Market areas for MBR technology Membrane bioreactors leachate municipal wastewater textile industry industrial laundries pulp & paper tank cleaning beverage industry dairy industry vegetable industry fruit industry slaughter- house / rendering petrochem. industry chemical industry pharmac. industry
© 2006, Koch Membrane Systems, Inc. All rights reserved. Industrial Installations
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) Malting industry PURON ® MBR + MegaMagnum ® RO
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) Problem Expanding production Increased demand on fresh water Water shortage (Australia) Goal Water savings through partial water recycling by means of RO Looking for ideal pretreatment to feed the RO
© 2006, Koch Membrane Systems, Inc. All rights reserved. RO Pretreatment Options Pretreatment Bacteria & SS removal BOD removal Small footprint Economics Prevention of organic fouling & scaling in RO Conventional – ––– Convent. + Tertiary 00– –– Conv. + Tert. + UF + +– –+ MBR + + excellent + + good 0 0 average – poor – – very poor
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) Fresh water Steeping Pre-screening Wastewater buffer tank Excess sludge RO CIP tank Barley DischargeProcess Biology UF MBR
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) Biological process tank MegaMagnum RO ® elements MegaMagnum RO ® elements Submerged PURON ® modules
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) Commissioning of PURON ® modules
© 2006, Koch Membrane Systems, Inc. All rights reserved. Joe White Maltings (Australia) MegaMagnum RO ® plant.
Membrane Bioreactors for Wastewater Treatment.. MBR is the combination of a membrane process like microfiltration or ultra filtration with a suspended.
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