| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4482639 | Water Research | 2010 | 6 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Kazuki Akamatsu, Wei Lu, Takashi Sugawara, Shin-ichi Nakao,