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Indexed by:期刊论文

Date of Publication:2011-12-01

Journal:BIORESOURCE TECHNOLOGY

Included Journals:Scopus、SCIE、EI、PubMed

Volume:102

Issue:24

Page Number:11121-11131

ISSN No.:0960-8524

Key Words:Membrane fouling; Cake layer; Permeability; Modeling; Operating parameters

Abstract:In order to obtain a better understanding of the cake layer formation mechanism in the flocculants added MBRs, a model was developed on the basis of particle packing model considering cake collapse effect and a frictional force balance equation to predict the porosity and permeability of the cake layers. The important characteristic parameters of the flocs (e.g., floc size, fractal dimensions) and operating parameters of MBRs (e.g., transmembrane pressure, cross-flow velocity) are considered in this model. With this new model, the calculated results of porosities and specific cake resistances under different MBR operational conditions agree fairly well with the experimental data. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.