한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제22권1호
  • /
  • Pages.1-6
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  • 2006
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

상업용 내오염성 저압 RO막의 표면 특성 분석

Surface Characteristics of Fouling Resistant Low-Pressure RO Membranes

  • 홍승관 (고려대학교 공과대학 사회환경시스템공학과) ;
  • ;
  • ;
  • 이진우 ;
  • 박찬혁 (고려대학교 공과대학 사회환경시스템공학과) ;
  • 김하나 (고려대학교 공과대학 사회환경시스템공학과)
  • Hong, Seungkwan (Dept. of Civil and Environmental Engineering, Korea University) ;
  • Taylor, James (Dept. of Civil and Environmental Engineering, University of Central Florida) ;
  • Norberg, David (Dept. of Civil and Environmental Engineering, University of Central Florida) ;
  • Lee, Jinwoo (Dept. of Civil and Environmental Engineering, University of Central Florida) ;
  • Park, Chanhyuk (Dept. of Civil and Environmental Engineering, Korea University) ;
  • Kim, Hana (Dept. of Civil and Environmental Engineering, Korea University)
  • 투고 : 2005.01.14
  • 심사 : 2005.10.31
  • 발행 : 2006.01.30
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초록

In this study, five commercially available fouling resistant low-pressure RO membranes were investigated for the treatment of seasonally brackish surface water with high organic content (${\approx}24mg/L$). The membranes investigated are LFC-1 (Hydranautics), X20 (Trisep), BW30FR1 (FilmTec), SG (Osmonics), and BE-FR (Saehan). The results of surface characterization revealed that each of these membranes has one or two unique surface characteristics to minimize the adherence of the fouling materials to the membrane. Specifically, the LFC1 membrane features a neutral or low negative surface to minimize electrostatic interactions with charged foulants. The X20, on the other hand, shows a highly negatively charged surface, and thus, is expected to perform well with feed waters containing negatively charged organics and colloids. The BW30FR1 exhibits a relatively neutral and hydrophilic surface, which could be beneficial for lessening organic and/or biofouling. The SG membrane has a smooth surface that makes it quite resistant to fouling, particularly for colloidal deposition. Lastly, BE-FR membrane demonstrated a medium surface charge and a slightly higher hydrophobicity. In the pilot study, all of the four membranes experienced a gradual increase in MTC (water mass transfer coefficient or specific flux) over time, indicating no fouling occurred during the pilot study. The deterioration of permeate water quality such as TDS was also observed over time, suggesting that the integrity of the membranes was compromised by the monochloramine used for biofouling control.

키워드

과제정보

연구 과제 주관 기관 : St. Johns River Water Management District

참고문헌

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