Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effects of various foulants on flux changes in membrane distillation process

막증류 공정에서 오염 인자가 플럭스 변화에 미치는 영향

  • Park, Chansoo (Civil & Environmental Engineering, Hanyang University) ;
  • Lee, Chang-Kyu (Civil & Environmental Engineering, Hanyang University) ;
  • Kim, Jong-oh (Civil & Environmental Engineering, Hanyang University) ;
  • Choi, June-Seok (Korea Institute of Civil Engineering and Building Technology, Environment and Plant Engineering Research Institute)
  • 박찬수 (한양대학교 건설환경공학과) ;
  • 이창규 (한양대학교 건설환경공학과) ;
  • 김종오 (한양대학교 건설환경공학과) ;
  • 최준석 (한국건설기술연구원 환경.플랜트연구소)
  • Received : 2016.04.21
  • Accepted : 2016.06.07
  • Published : 2016.06.01
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Abstract

The effects of dissolved inorganic and organic matter in seawater and the characteristics of fouling on the membrane surface were investigated within membrane distillation (MD) process. The changes of the membrane flux of PE and PVDF hollow fiber membranes under natural and synthetic seawater were compared with given variances of temperature. The flux of both membranes under the synthetic seawater, without any organic matter, were higher than that of the natural seawater, indicating the organic fouling on the membrane surface. The surface of the membrane was analyzed using scanning electron microscope (SEM) to examine the fouling. The experiment with organics has shown the formation of thin film over the membrane surface, while the experiment with inorganics has shown only the formation of inorganic crystals. The results indicated the organic matter as the major foulants and that the organics affected the formation of the crystals. Permeate water conductivity of all conditions verified the quality of the water to be better if not similar to that of RO.

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References

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