Membrane Filtration Characteristics in ElectroCoagulation Membrane Bioreactor

doi:10.12068/j.issn.1005-3026.2014.10.026

Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (10): 1482-1486.DOI: 10.12068/j.issn.1005-3026.2014.10.026

• Resources & Civil Engineering • Previous Articles Next Articles

Membrane Filtration Characteristics in ElectroCoagulation Membrane Bioreactor

LI Liang， ZHANG Xueyu， QIAN Guangsheng， HU Xiaomin

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2013-06-09 Revised:2013-06-09 Online:2014-10-15 Published:2014-05-19
Contact: HU Xiaomin
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Abstract

Abstract: As simulated dyeing and printing wastewater was taken as the research object， the membrane fouling and sludge mixed liquor properties in ECMBR and conventional MBR pilot systems were investigated. The results showed embrane filtration resistance were dominated by cake resistance， the cake resistance makes up 99% and 9334% of total resistance in MBR and ECMBR， respectively. However， the total resistance in ECMBR is 1/4 in MBR， which means electrocoagulation can effectively reduce cake resistance. Bigger particle size diameter(PSD)， smaller absolute value of Zeta potential， lower concentration of extracellular polymeric substances (EPS) and soluble microbial products (SMP) and higher relative hydrophobic (RH) of sludge are found in ECMBR than those in MBR by comparing the difference of sludge mixed liquor properties. The electrocoagulation is effective to improve the filtration performance of membrane bioreactor， increase membrane flux and decrease the membrane resistance by changing the sludge mixed liquor properties.

Key words: membrane bioreactor (MBR), electrocoagulation, membrane fouling, filtration characteristics, Zeta potential

CLC Number:

TB43

LI Liang， ZHANG Xueyu， QIAN Guangsheng， HU Xiaomin. Membrane Filtration Characteristics in ElectroCoagulation Membrane Bioreactor[J]. Journal of Northeastern University Natural Science, 2014, 35(10): 1482-1486.

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[10]二位数()，采用污泥在有机溶剂十六烷中的吸附度表征
[14]，具体如下:取40 mL污泥样品，离心两次后用去离子水使之重新悬浮；置于冰水浴中超声处理2 min，使混合液均化，然后用20 mL正十六烷在分液漏斗中充分混合5 min，静置30 min后将水相分离.RH用水相中MLSS质量浓度(MLSSe)和原污泥中MLSS质量浓度(MLSSo)之比表示:RH=(1-MLSSeMLSSo)×100

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Membrane Filtration Characteristics in ElectroCoagulation Membrane Bioreactor

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