The behavior of membrane fouling initiation on the crossflow membrane bioreactor system

    Authors

    J. G. Choi; T. H. Bae; J. H. Kim; T. M. Tak;A. A. Randall

    Comments

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    Abbreviated Journal Title

    J. Membr. Sci.

    Keywords

    membrane bioreator (MBR); membrane fouling; aeration effect; biomass; WASTE-WATER TREATMENT; AERATION; REUSE; Engineering, Chemical; Polymer Science

    Abstract

    A membrane bioreactor (MBR) system (i.e. an activated sludge system where the clarifier has been replaced with membrane filtration) has many advantages compared with the conventional activated sludge process. However a serious problems that has prevented this technology from reaching its potential is membrane fouling. In this study, the biomass was cultivated under three conditions: normal (high dissolved oxygen, DO); bulking; and normal conditions with low DO concentration. Membrane filtration tests were performed with cellulose acetate (CA), sulfonated polyethersulfone (SPES) and polyethersulfone (PES) membranes, respectively. Relatively hydrophobic PES membranes fouled more seriously than hydrophilic CA membranes. This phenomenon was especially significant under bulking conditions. Ultimate flux was almost equal for all three membrane types however, since the PES and SPES started with higher initial fluxes. Effluent quality was not affected by membrane fouling/flux but did deteriorate at low Dos. (C) 2002 Elsevier Science B.V. All rights reserved.

    Journal Title

    Journal of Membrane Science

    Volume

    203

    Issue/Number

    1-2

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    103

    Last Page

    113

    WOS Identifier

    WOS:000176241800008

    ISSN

    0376-7388

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