Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Comparison of physical cleaning applied to chemical backwashing of wastewater reuse membrane system

하수재이용 막여과 공정에서 약품 역세에서의 물리세정 영향 비교 평가

  • 이창하 (성균관대학교 건설환경시스템공학과) ;
  • 김영훈 (대우건설 기술연구원 환경에너지연구팀) ;
  • 전민정 (성균관대학교 건설환경시스템공학과) ;
  • 이용수 (성균관대학교 건설환경시스템공학과) ;
  • 장암 (성균관대학교 건설환경시스템공학과) ;
  • 김형수 (성균관대학교 건설환경시스템공학과)
  • Published : 2011.12.15
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Abstract

Biologically treated water contains a large quantity of organic matters and microorganisms which can cause various problems to membrane. The membrane fouling occurred by these reasons is hard to control by single physical cleaning. This study analyzes the efficiency of aeration with chemical backwashing and foulants removal during chemical backwashing. The cleaning efficiency improves when the chemical concentration is high and the contact time of chemical is long. Chemical backwashing with aeration shows exceptional cleaning efficiency which leads the physical cleaning is required during chemical backwashing since it forms flow inside the membrane submerged tank. From the foulants removal analysis, the particles such as turbidity and TOC removal rate increase when the aeration is applied. Dissolved matter of DOC and UV254 removal is dependent on higher chemical concentration. According to FTIR analysis, one of major foulants, the polysaccharide is controlled by the chemical backwashing with aeration condition.

Keywords

References

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