Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Prevention of membrane fouling by roughing filter for the stand-alone MD process

해수담수화 막 증류 공정에서 유입수 전처리 적용에 따른 막 오염 평가

  • Yun, Taekgeun (Green City Technology Institute, Korea Instiute of Science and Technology) ;
  • Jeong, Seongpil (Green City Technology Institute, Korea Instiute of Science and Technology) ;
  • Kim, Hyewon (Green City Technology Institute, Korea Instiute of Science and Technology) ;
  • Hong, Seungkwan (KU-KIST GreenSchool, Graduate School of Energy and Environment, Korea University) ;
  • Lee, Seockheon (Green City Technology Institute, Korea Instiute of Science and Technology)
  • 윤택근 (한국과학기술연구원, 녹색도시기술연구소) ;
  • 정성필 (한국과학기술연구원, 녹색도시기술연구소) ;
  • 김혜원 (한국과학기술연구원, 녹색도시기술연구소) ;
  • 홍승관 (고려대학교, 그린스쿨대학원(에너지환경정책기술대학원)) ;
  • 이석헌 (한국과학기술연구원, 녹색도시기술연구소)
  • Received : 2018.03.09
  • Accepted : 2018.06.06
  • Published : 2018.08.15
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Abstract

Membrane distillation (MD) is a thermally driven desalination process with a hydrophobic membrane. MD process has been known to have a lower fouling potential compared to other pressure-based membrane desalination process (NF, RO). However, membrane fouling also occurs in MD process. In this study, the membrane fouling was observed in MD process according to the pre-treatment processes. The filtration and precipitation processes were applied as the pre-treatment to prevent the membrane fouling. The pore sizes of roughing filters were 0.4, 5, 10, 30, and $60{\mu}m$. The concentration of the coagulant was 1.2 mg/L as $FeCl_3$. The membrane fouling on MD membrane was successfully removed with both pre-treatment processes.

Keywords

References

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