Behavior and Influence of EPS on Membrane Fouling by Changing of HRT in MBR with Gravitational Filtration

중력여과 방식의 MBR을 이용한 하수처리에서 HRT 변화에 따른 EPS의 거동과 막오염에 대한 영향

  • Kim, SI-Won (Department of Environmental Engineering, Kyungpook National University) ;
  • Kwak, Sung-Jin (Department of Environmental Engineering, Kyungpook National University) ;
  • Lee, Eui-Sin (DAEWOO E&C CO., LTD Institute of Construction Tech.) ;
  • Hong, Seung-Mo (DAEWOO E&C CO., LTD Institute of Construction Tech.) ;
  • Min, Kyung-Sok (Department of Environmental Engineering, Kyungpook National University)
  • Received : 2006.03.23
  • Accepted : 2006.07.19
  • Published : 2006.09.30

Abstract

The behavior and influence of EPS on membrane fouling by changing of hydraulic retention time was investigated, using lab. scale submerged membrane bio-reactor, which was operated with gravitational filtration and fed supernatant of primary sedimentation in waste water treatment plant as influent. The membrane was adopted micro-filter of polyethylene hollow fiber. EPS was analysed as polysaccharides and protein especially, into soluble and bound EPS separately. The concentration of soluble EPS was increased at short HRT, then membrane fouling was rapidly progressed and flux was depressed. The most of EPS clogged membrane pore were polysaccharides, while protein was important parameter affected on membrane fouling because of it's more accumulating in the more term operating.

Keywords

Acknowledgement

Supported by : 환경부

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