Effects of operative conditions on membrane fouling of jet loop membrane bioreactor

• Published in: Journal of Shanghai University Vol. 14; no. 4; pp. 251 - 254
• Main Author: 徐高田 孙佳琳 秦哲 阮慧娟
• Format: Journal Article
• Language: English
• Published: Heidelberg Shanghai University Press 01.08.2010; School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China; Shanghai Environmental Protection Bureau, Shanghai 200003, P. R. China%School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
• Subjects: Classical Mechanics; Engineering; Environment; Environmental and Chemical Engineering; Life Sciences; Materials Science; Mathematical and Computational Engineering; MBR膜; Mechatronics; 一体式膜生物反应器; 喷射环流; 手术; 暂停时间; 曝气强度; 正交实验; 膜污染; membrane fouling; suction time; suction suspended time; jet loop membrane bioreactor (JLMBR); aeration intensity
• ISSN: 1007-6417; 1863-236X
• DOI: 10.1007/s11741-010-0639-2

The orthogonal experiments, which involves three factors： aeration intensity, suction time and suction suspended time, were designed to research membrane fouling of jet loop membrane bioreactor （JLMBR）. Experimental results indicate that increasing aeration intensity, reducing suction time and increasing suction suspended time all could mitigate membrane fouling effectively. However excessive aeration intensity, too short suction time and excessive suction suspended time were bad for bioreactor running. The optimal aeration intensity, suction time and suction suspended time were 0.75 1.00 m3/（m2.h）, 8 -10 min and 4 -5 min, respectively. The three factors all had effect on membrane pollution rate, while the suction time was the most important one and followed by aeration intensity and suction suspended time. It also indicates that, comparing with traditional submerged membrane bioreactors, JLMBR had lower membrane pollution rate.