A novel composite conductive microfiltration membrane and its anti-fouling performance with an external electric field in membrane bioreactors

被引：120

作者：

Huang, Jian ^{[1
]}

Wang, Zhiwei ^{[1
]}

Zhang, Junyao ^{[1
]}

Zhang, Xingran ^{[1
]}

Ma, Jinxing ^{[1
]}

Wu, Zhichao ^{[1
]}

机构：

[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

中国国家自然科学基金;

关键词：

MUNICIPAL WASTE-WATER; MICROBIAL FUEL-CELLS; DYNAMIC MEMBRANE; ULTRAFILTRATION MEMBRANE; POWER-DENSITY; SYSTEM; REMOVAL; ADSORPTION; FOULANTS; SEWAGE;

D O I：

10.1038/srep09268

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Membrane fouling remains an obstacle to wide-spread applications of membrane bioreactors (MBRs) for wastewater treatment and reclamation. Herein, we report a simple method to prepare a composite conductive microfiltration (MF) membrane by introducing a stainless steel mesh into a polymeric MF membrane and to effectively control its fouling by applying an external electric field. Linear sweep voltammetry and electrochemical impedance spectroscopy analyses showed that this conductive membrane had very good electrochemical properties. Batch tests demonstrated its anti-fouling ability in filtration of bovine serum albumin, sodium alginate, humic acid and silicon dioxide particles as model foulants. The fouling rate in continuous-flow MBRs treating wastewater was also decreased by about 50% for this conductive membrane with 2 V/cm electric field compared to the control test during long-term operation. The enhanced electrostatic repulsive force between foulants and membrane, in-situ cleaning by H2O2 generated from oxygen reduction, and decreased production of soluble microbial products and extracellular polymeric substances contributed to fouling mitigation in this MBR. The results of this study shed light on the control strategy of membrane fouling for achieving a sustainable operation of MBRs.

引用

页数：8

共 55 条

[31] Minute electric field reduced membrane fouling and improved performance of membrane bioreactor [J].