Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Evaluation of operating performance of secondary effluents treatment membrane system adapted chemical backwashing

약품역세를 적용한 하수재이용 막여과 시스템의 운전성능 평가

  • 김영훈 (성균관대학교 건설환경시스템공학과) ;
  • 이창하 (성균관대학교 건설환경시스템공학과) ;
  • 전민정 (성균관대학교 건설환경시스템공학과) ;
  • 이용수 (성균관대학교 건설환경시스템공학과) ;
  • 이의종 (성균관대학교 건설환경시스템공학과) ;
  • 남종우 (성균관대학교 건설환경시스템공학과) ;
  • 김형수 (성균관대학교 건설환경시스템공학과)
  • Published : 2011.06.15
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Abstract

Secondary effluent contains particle compounds which are comprised of microorganisms that occurs membrane fouling when the water is reused. This study evaluates the characteristics of membrane fouling of secondary effluent reuse. Effects of chemical backwashing are analyzed to reduce membrane fouling by regular chemical backwashing. As the result, major membrane foulants are verified EPS materials which include protein and polysaccharide that cause biofilm cake layer on the membrane. Also, sodium hypochlorite is applied to chemical backwashing. The backwashing improves recover rate when injected chemical concentration is increased and chemical backwashing cycle is amplified. Chemical backwashing cycle affects more than injected chemical concentration yet idle time does not noticeably influence on reducing membrane fouling.

Keywords

References

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