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

doi:10.1016/j.biortech.2011.12.002

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Periodical Articles > Item 310902800/27643

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Title:	Effect of organic loading rate on organic matter and foulant characteristics in membrane bio-reactor
Authors:	Johir, M.A.H. Vigneswaran, S. Sathasivan, A. Kandasamy, J. Chang, C.Y.
Contributors:	環境工程與科學系
Keywords:	Membrane Bio-Reactor Olr Membrane Fouling Tmp Lc-Ocd
Date:	2012-06
Issue Date:	2014-03-21 16:16:15 (UTC+8)
Publisher:	Elsevier Sci Ltd
Abstract:	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.
Relation:	Bioresource Technology, 113 SI, 154-160
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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