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Evaluation of operating performance of secondary effluents treatment membrane system adapted chemical backwashing  

Kim, Young-Hoon (성균관대학교 건설환경시스템공학과)
Lee, Chang-Ha (성균관대학교 건설환경시스템공학과)
Jeon, Min-Jung (성균관대학교 건설환경시스템공학과)
Lee, Yong-Soo (성균관대학교 건설환경시스템공학과)
Lee, Eui-Jong (성균관대학교 건설환경시스템공학과)
Nam, Jong-Woo (성균관대학교 건설환경시스템공학과)
Kim, Hyung-Soo (성균관대학교 건설환경시스템공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.25, no.3, 2011 , pp. 335-342 More about this Journal
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
Membrane filtration system; Chemical backwashing; Secondary effluent treatment; Plate&Flame membrane; Membrane fouling;
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Times Cited By KSCI : 1  (Citation Analysis)
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