Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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A Study on the Determination of Backwash Condition and Fouling in Coagulation/Ultrafiltration Membrane System

응집·한외여과 공정에서 역세척 조건 결정 및 막오염 특성에 관한 연구

  • Moon, Seong-Yong (Water Environment & Remediation Research Center, Korea Institute of Science and Technology) ;
  • Lee, Sang-Hyup (Water Environment & Remediation Research Center, Korea Institute of Science and Technology) ;
  • Lee, Byoung-Cheun (Water Environment & Remediation Research Center, Korea Institute of Science and Technology) ;
  • Yun, Jong-Sub (Department Civil Engineering, Kyungnam University) ;
  • Kim, Seung-Hyun (Department Civil Engineering, Kyungnam University)
  • 문성용 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 이상협 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 이병천 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 윤종섭 (경남대학교 토목공학과) ;
  • 김승현 (경남대학교 토목공학과)
  • Received : 2005.07.22
  • Accepted : 2005.09.23
  • Published : 2006.01.30
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Abstract

This study is about backwash condition and membrane fouling at continuous coagulation/ultrafiltration process in water treatment. The capacity of pilot plant was $0.06m^3/d$. The result of the test, Backwash cycle time and duration time had a significant effect on the efficiency of system and backwash. Backwash duration time was determined to be fixed in 30 seconds for the system with more than 95% recovery rate, It needed 30 minute backwash frequency. During the continuous operation, membrane fouling was analyzed by determining the filtration resistance ($R_i$) and cake layer resistance ($R_c$). At the initial stage, filtration resistance highly influenced the fouling behavior. But after 1.5 hours, cake layer resistance became more important than filtration resistant.

Keywords

References

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