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	Effect of mixed liquor properties on fouling propensity in membrane bioreactors
	Wu, Jinling ; Huang, Xia
	2010-10-12 ; 2010-10-12
关键词	Mixed liquor property Membrane filterability Fouling propensity Membrane bioreactor WASTE-WATER TREATMENT EXTRACELLULAR POLYMERIC SUBSTANCES ACTIVATED-SLUDGE SUBMERGED MEMBRANE FILTRATION CHARACTERISTICS MICROFILTRATION PERMEABILITY PERFORMANCE MECHANISMS OPERATION Engineering, Chemical Polymer Science
中文摘要	In membrane bioreactors, mixed liquor properties influence membrane fouling significantly. An effective method was therefore proposed to identify the major factors that affect membrane fouling under identical conditions for direct comparison. First, the membrane filterability of the mixed liquor was measured to evaluate fouling propensity. Forty mixed liquor samples taken from various membrane bioreactors were measured in terms of their membrane filterability and 14 other properties. The correlation of membrane filterability with each mixed liquor property was further analyzed by multivariate statistical analyses. The results showed that supernatant organic concentration was the most significant factor influencing membrane filterability. The soluble organics and polysaccharides in the supernatant contributed to fouling more than the colloidal organics and proteins. Additionally, mixed liquor suspended solid concentration had an effect on filterability at concentrations greater than 10g L-1, which resulted in a great increase in the viscosity of the mixed liquor. Otherwise, mixed liquor with mean floc size greater than 80 mu m consistently featured good membrane filterability. Extra-cellular polymeric substance content had little effect on membrane filterability. (c) 2009 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79726]
专题	清华大学
推荐引用方式 GB/T 7714	Wu, Jinling,Huang, Xia. Effect of mixed liquor properties on fouling propensity in membrane bioreactors[J],2010, 2010.
APA	Wu, Jinling,&Huang, Xia.(2010).Effect of mixed liquor properties on fouling propensity in membrane bioreactors..
MLA	Wu, Jinling,et al."Effect of mixed liquor properties on fouling propensity in membrane bioreactors".(2010).

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