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논문 기본 정보

자료유형
학술저널
저자정보
이상협 (한국과학기술연구원 환경공정연구부 수질환경 및 복원연구센터) 장낙용 (특허청 화학생명공학심사국 유전공학과) 와타나베 요시마사 (일본 국립북해도대학대학원 공학연구과 도시환경공학전공 환경위생공학강좌) 최용수 (한국과학기술연구원 환경공정연구부 수질환경 및 복원연구센터)
저널정보
대한상하수도학회 상하수도학회지 상하수도학회지 제18권 제5호
발행연도
2004.1
수록면
588 - 597 (10page)

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In this research, we investigated the variation of transmembrane pressure and permeate water quality with pre coagulation and sedimentation with iron based coagulant and chlorination of feed water for PVDF (polyvinylidene fluoride) based MF membrane filtration. NaCIO was fed to the membrane module with dosage of 0.5mg/L and maintained during filtration. To observe the effect of raw water, three types of raw and processed waters, including river surface water, coagulated water and coagulated-settled water, were applied. In case of river surface water, the transmembrane pressure increased drastically in 500 hours of operation. On the contrary, no significant increase in transmembrane pressure was observed for 1,200 hours of operation for coagulated water and coagulated-settled waters. The turbidity of permeate was lower than a detection limit of equipment for all raw waters. The removal efficiency of humic substances of coagulated water and coagulated-settled water was approximate ten times of that of surface river water. And, the removal efficiency of TOC and DOC was approximate two times of that of surface river water. From the results of plant operation, stable operation was maintained at $0.9m^3/m^2{\cdot}day$ filtration flux through the combination of pre-coagulation and pre-chlorination. However, the water quality of permeate was the best when pre-coagulation-sedimentation process was combined with pre-chlorination.

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