Development of a novel fouling suppression system in membrane bioreactors using an intermittent electric field

被引：118

作者：

Akamatsu, Kazuki ^{[1
]}

Lu, Wei ^{[1
]}

Sugawara, Takashi ^{[1
]}

Nakao, Shin-ichi ^{[1
]}

机构：

[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

WATER RESEARCH | 2010年 / 44卷 / 03期

关键词：

Membrane bioreactor; Fouling; Electric field; Activated sludge; Intermittent; COMBINED MACROMOLECULAR SOLUTIONS; AGGREGATE TRANSPORT MODEL; POLY-DISPERSE SUSPENSIONS; MUNICIPAL WASTE-WATER; SUBMERGED MEMBRANE; SLUDGE; MICROFILTRATION; ULTRAFILTRATION; ELECTROULTRAFILTRATION; SEPARATION;

D O I：

10.1016/j.watres.2009.10.026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A novel membrane bioreactor system that uses an intermittent electric field was successfully developed to suppress membrane fouling, caused mainly by activated sludge. We found that the surface of the activated sludge is negatively charged, and propose the utilization of an electric repulsive force to move the sludge away from the membrane by applying an electric field only when the permeate flux has drastically declined because of membrane fouling. The experimental results showed that a field of 6 V cm(-1), switched on and off every 90 s, significantly improved the removal of the activated sludge from the membrane and accordingly improved the average permeate flux. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：825 / 830

页数：6

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