Membrane fouling control enhanced by electric field generated bymicrobial fuel cell

doi:10.11949/j.issn.0438-1157.20150995

CIESC Journal ›› 2015, Vol. 66 ›› Issue (12): 5103-5110.DOI: 10.11949/j.issn.0438-1157.20150995

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Membrane fouling control enhanced by electric field generated bymicrobial fuel cell

BI Fanghua^1,2, JIA Hui^1,2, WANG Jie^1,2, ZHANG Chengzhong², QIAO Longsheng^1,2

1 State Key Laboratory of Separation Membranes &Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, Tianjin, China;
2 School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, Tianjin, China

Received:2015-06-26 Revised:2015-08-24 Online:2015-12-05 Published:2015-12-05
Supported by:
supported by the National Natural Science Foundation of China (51578375, 51378349), the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China (IRT13084) and the Program for Strengthening the Ocean by Science and Technology in Tianjin of China (KJXH2012-5).

基于MFC电场强化的MBR膜污染控制

毕芳华^1,2, 贾辉^1,2, 王捷^1,2, 张成众², 乔龙胜^1,2

1 天津工业大学分离膜与膜过程省部共建国家重点实验室, 天津 300387;
2 天津工业大学环境与化学工程学院, 天津 300387

通讯作者: 贾辉
基金资助:
国家自然科学基金项目(51578375,51378349);长江学者和创新团队发展计划资助(IRT13084);天津市科技兴海项目(KJXH2012-5)。

Abstract

Abstract:

A novel microbial fuel cell (MFC) – membrane bioreactor (MBR) integrated process was designed based on the combination of MBR and MFC for the membrane fouling control conducted by the electric field generated from MFC in wastewater treatment. The performances of the integrated process under different operational conditions were investigated and compared with conventional MBR. The results showed that the electric field generated by MFC was conductive to mitigate membrane fouling and prolong membrane filtration interval by controlling the growth of irreversible fouling resistance in the membrane filtration. The electric field had a significant advantage on the suppression of carbohydrate of small formula weight in LB-EPS under various MLSS, while compared with LB-EPS, the concentration of TB-EPS had no significantly change. Under appending electric field, the absolute value of zeta potential was decreased by 2.7, 7.1 and 4.1 mV, respectively, the growth of filamentous bacteria was promoted, and the larger sludge particles were generated through the improved floc aggregation.

Key words: MBR, MFC, membrane fouling, extracellular polymeric substances, aggregation

摘要：

将膜生物反应器(MBR)与微生物燃料电池(MFC)相结合,设计了一种MFC-MBR耦合工艺。对不同运行条件下MFC电场对MBR运行的影响与常规MBR(CMBR)工艺进行了对比。结果表明:以污水为基质的MFC产生的生物弱电场能有效控制膜污染速率,抑制不可逆污染。在不同污泥浓度下,MFC电场对于控制松散胞外聚合物(LB-EPS)中多糖类小分子污染物具有明显的优势,但对紧密胞外聚合物(TB-EPS)的控制并不明显。附加电场后,污泥zeta电位的绝对值分别降低2.7、7.1和4.1 mV,并促进了丝状菌的生长,使污泥絮凝性增强,污泥粒径变大。

关键词: MBR, MFC, 膜污染, 胞外聚合物, 絮凝

CLC Number:

X703.1

BI Fanghua, JIA Hui, WANG Jie, ZHANG Chengzhong, QIAO Longsheng. Membrane fouling control enhanced by electric field generated bymicrobial fuel cell[J]. CIESC Journal, 2015, 66(12): 5103-5110.

毕芳华, 贾辉, 王捷, 张成众, 乔龙胜. 基于MFC电场强化的MBR膜污染控制[J]. 化工学报, 2015, 66(12): 5103-5110.

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Membrane fouling control enhanced by electric field generated bymicrobial fuel cell

基于MFC电场强化的MBR膜污染控制

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