技術報文 Effect of Gas-Liquid Ratio on the Membrane Flux in Activated Sludge Process Effect of Gas-Liquid Ratio on the Membrane Flux in Activated Sludge Process

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Abstract

The use of membrane bioreactors (MBRs) is rapidly increasing in the field of organic wastewater treatment. In typical MBR applications for activated sludge processes, the aeration for oxygen supply is also used to maintain high cross-flow liquid velocity over the submerged membrane system (SMS). The prime objective of this study was to demonstrate the effect of presence of gas phase fraction in suspension on the performance of membrane filtration. Experimental studies were performed using two different membrane modules of (1) flat sheet membrane cell (FMC) operated outside the feed tank, where the cross flow velocity of liquid and the volume fraction of gas were changed independently, and (2) flat sheet SMS operated in tank. The relationship between the cross flow velocity, volume fraction of gas phase and the trans-membrane pressure (TMP) were determined. It was observed that the rate of increase in TMP did not depend on the presence of gas phase, but depended on the real cross-flow liquid velocity, <I>u<SUB>L</SUB></I>', for both the FMC with and without gas phase and the flat-sheet SMS.

Journal

  • MEMBRANE

    MEMBRANE 27(3), 151-158, 2002-05-01

    THE MEMBRANE SOCIETY OF JAPAN

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Codes

  • NII Article ID (NAID)
    10008588980
  • NII NACSIS-CAT ID (NCID)
    AN0023215X
  • Text Lang
    ENG
  • Article Type
    NOT
  • ISSN
    03851036
  • NDL Article ID
    6152356
  • NDL Source Classification
    ZR2(科学技術--生物学--生化学)
  • NDL Call No.
    Z18-1127
  • Data Source
    CJP  NDL  J-STAGE 
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