Effect of organic loading rate on organic matter and foulant characteristics in membrane bio-reactor

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標題:	Effect of organic loading rate on organic matter and foulant characteristics in membrane bio-reactor
作者:	Johir, M.A.H. Vigneswaran, S. Sathasivan, A. Kandasamy, J. Chang, C.Y.
貢獻者:	環境工程與科學系
關鍵字:	Membrane Bio-Reactor Olr Membrane Fouling Tmp Lc-Ocd
日期:	2012-06
上傳時間:	2014-03-21 16:16:15 (UTC+8)
出版者:	Elsevier Sci Ltd
摘要:	In this study, the influence of organic loading rate (OLR) on the performance of a membrane bio-reactor (MBR) was investigated. The MBR was operated with 6 different OLRs between 0.5 and 3.0 kg COD/m(3) d. The hydrodynamic parameters of the MBR were kept constant. The hydraulic retention time and sludge retention time were kept at 8 h and 40 d respectively. From the experimental investigation, it was found that the removal efficiency of DOC. COD and NH4-N decreased when OLRs were increased from 0.5 to 3.0 kg COD/m(3) d. Higher OLRs of 2.75-3.0 kg COD/m(3) d resulted in a higher transmembrane pressure development. The fractionation of organic matters showed more hydrophilic substances with higher OLRs. A detailed organic matter characterization of membrane foulant, soluble microbial product and extracellular polymeric substances showed that bio-polymers type substances together with humic acid and lower molecular neutral and acids were responsible for membrane fouling. (C) 2011 Elsevier Ltd. All rights reserved.
關聯:	Bioresource Technology, 113 SI, 154-160
显示于类别:	[環境工程與科學系(所)] 期刊論文

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