Sustainable membrane operation design for the treatment of the synthetic coke wastewater in SMBR

Membrane fouling in the membrane bioreactor (MBR) is typically caused by the interaction of microbial characteristics, hydrodynamic behavior, operation environment, wastewater characteristics and membrane properties, which result in the deterioration of performance and increasing energy consumption...

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Bibliographic Details
Published in:Water science and technology 2009-01, Vol.60 (8), p.2115-2124
Main Authors: Zhou, Ying, Xu, Zhen-Liang, Munib, Shahda, Chen, Gui-e, Lu, Qiong
Format: Article
Language:English
Subjects:
Backwash
Beverage industry
Biofouling
Bioreactors
Bioreactors - microbiology
Coke
Coke - analysis
Conservation of Natural Resources - methods
Dissolved oxygen
Energy consumption
Extracellular Space - metabolism
Filtration
Fluctuations
Flux
Fouling
Hydraulic retention time
Membrane processes
Membranes
Membranes, Artificial
Microorganisms
Optimization
Oxygen - metabolism
Polymers - metabolism
Polyvinyls
Pressure
Retention time
Sustainability
Time Factors
Waste Disposal, Fluid - methods
Wastewater treatment
Water Purification - methods
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Summary:Membrane fouling in the membrane bioreactor (MBR) is typically caused by the interaction of microbial characteristics, hydrodynamic behavior, operation environment, wastewater characteristics and membrane properties, which result in the deterioration of performance and increasing energy consumption and cost of membrane replacement. The effect of the crucial MBR parameters (the microbial loading and characteristics, dissolved oxygen (DO), hydraulic retention time (HRT), backwashing conditions and membrane characteristics) on membrane fouling was investigated in a submerged membrane bioreactor (SMBR) during the long term treatment of synthetic coke wastewater. Also the optimum operation strategies were further utilized in order to satisfy the minimal membrane fouling operation through a long-term evaluation of the MBR performance. It has been demonstrated that with application of these optimal designed conditions, significant membrane fouling improvements were achieved over a long operating time, so it was possible to perform in sustainable operation for MBR. In this study, the upper limit of the sustainable flux is found to be as much as 18.6 L/m(2) h and the optimum sustainable flux value should be 50 approximately 75% of critical flux to satisfy the desired sustainable operation period.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2009.540