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/m2 h and the optimum sustainable flux value should be 50 ∼ 75% of critical flux to satisfy the desired sustainable operation period.
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Research Article|
October 01 2009
Sustainable membrane operation design for the treatment of the synthetic coke wastewater in SMBR
Ying Zhou;
Ying Zhou
1State Key Lab of Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China
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Zhen-liang Xu;
Zhen-liang Xu
1State Key Lab of Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China
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Shahda Munib;
Shahda Munib
1State Key Lab of Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China
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Gui-e Chen;
1State Key Lab of Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China
2Department of Chemical Engineering, Shanghai Institute of Technology, Shanghai 200233, China
E-mail: chemxuzl@ecust.edu.cn
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Qiong Lu
Qiong Lu
2Department of Chemical Engineering, Shanghai Institute of Technology, Shanghai 200233, China
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Water Sci Technol (2009) 60 (8): 2115–2124.
Citation
Ying Zhou, Zhen-liang Xu, Shahda Munib, Gui-e Chen, Qiong Lu; Sustainable membrane operation design for the treatment of the synthetic coke wastewater in SMBR. Water Sci Technol 1 October 2009; 60 (8): 2115–2124. doi: https://doi.org/10.2166/wst.2009.540
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