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논문 기본 정보

자료유형
학술저널
저자정보
현승훈 (고려대학교 공과대학 사회환경시스템공학과) 김응도 (코오롱 엔지니어링 기술연구소) 홍승관 (코오롱 엔지니어링 기술연구소) 안원영 (코오롱 엔지니어링 기술연구소) 임성균 (Civil and Environmental Engineering, University of Central Florida) 김건태 (Civil and Environmental Engineering, University of Central Florida)
저널정보
대한상하수도학회 상하수도학회지 상하수도학회지 제19권 제1호
발행연도
2005.1
수록면
47 - 52 (6page)

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This study was conducted to evaluate the performance of submerged hollow fiber MF processes to treat secondary wastewater for water reuse. Specifically, membrane productivity and filtrate water quality were investigated under various operating conditions (i.e. flux, recovery, and backwash rate) at pilot-scale. Membrane fouling became more severe with increasing flux and recovery, suggesting that low flux operation (< 25 LMH) was desirable. At high flux operating(> 37.5 LMH), increasing backwash rate showed only limited success. The biofouling, quantified by PEPA and BFHPC, was also significant in wastewater reclamation, and biogrowth control by chlorine, were necessary to improve membrane productivity. Filtrate water qualities are in good compliance with water reuse regulations regardless of operating conditions (flux, recovery and backwash rate). Particle (e.g. turbidity) removal ranged from 89 to 98%, while only 11 to 21% of organics (e.g. NPDOC) were removed by MF membrane. Only small improvement in biostability (e.g. AOC) was achieved by MF system, and thus, without post disinfection, significant microorganisms might be present in the filtrate due to regrowth. Lastly, in order to further investigate pathogen removal, controlled microbial challenge tests were performed by monitoring Giardia, Cryptosporidium, bacteria and virus, and showed relatively good microbial removal.

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