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Effect of Trans-Membrane Pressure on Reversible and Irreversible Fouling Formation of Ceramic Membrane

막간차압이 세라믹막의 가역막오염과 비가역막오염 형성에 미치는 영향

  • Lee, Heewon (Department of Construction Environmental Engineering, University of Science and Technology) ;
  • An, Kwangho (Environmental Eng. Research Division, Korea Institute of Construction Technology) ;
  • Choi, Juneseok (Environmental Eng. Research Division, Korea Institute of Construction Technology) ;
  • Kim, Seogku (Department of Construction Environmental Engineering, University of Science and Technology) ;
  • Oh, Hyunje (Department of Construction Environmental Engineering, University of Science and Technology)
  • 이희원 (과학기술연합대학원대학교(UST) 환경공학부) ;
  • 안광호 (한국건설기술연구원 환경연구실) ;
  • 최준석 (한국건설기술연구원 환경연구실) ;
  • 김석구 (과학기술연합대학원대학교(UST) 환경공학부) ;
  • 오현제 (과학기술연합대학원대학교(UST) 환경공학부)
  • Received : 2012.09.11
  • Accepted : 2012.09.28
  • Published : 2012.09.28

Abstract

This study was carried out to investigate how reversible and irreversible fouling were distributed in the filtration using ceramic membrane of 300 kDa pore size for secondary effluent of wastewater. It was performed by calculating fouling as numerical method for diverse TMPs and measured F-EEM and SEC for raw water, treated water and backwashed water. Water quality was also checked to know whether treated water quality was stable or not. The results showed that reversible fouling formation was increased when lower TMP was applied and it is caused by protein like organic matters having higher molecular weights. The secondary wastewater effluent had diverse molecular weight materials, especially contaminants lower than 0.5 kDa and bigger than 12 kDa. Decreasing TMP induced contaminants above 12 kDa and below 1 kDa to become reversible fouling.

본 연구에서는 300 kDa 공경의 세라믹막을 이용하여 재이용 원수인 하수 2차 방류수를 처리하여 가역 및 비가역 막오염비율을 연구하였다. 이를 위하여 운전조건인 막간차압을 변화시킬 때의 각 막오염을 수치적으로 계산하고 F-EEM과 SEC분석을 시행하였다. 또한 탁도, TOC 및 UV254를 측정하여 수질의 안정성을 평가하였다. 막간차압이 낮을수록 비가역 막오염에서 가역 막오염으로의 형성이 증가하였으며, 이는 주로 분자량이 큰 단백질 성분으로 인한 것으로 나타났다. 또한 하수 2차 처리수에는 다양한 분자량의 오염물이 함유되어 있으나 상대적으로 0.5 kDa 이하의 작은 분자량을 가지는 오염물이 가장 많았으며, 그 다음으로는 12 kDa 이상의 물질이 많았다. 300 kDa의 세라믹막은 주로 6 kDa 이상의 물질을 제거하였으며, 막간차압이 낮을수록 12 kDa 이상의 고분자 물질과 1 kDa 이하 물질이 가역 막오염으로 형성되는 것으로 나타났다.

Keywords

References

  1. 박승우, 장태일, "안전한 농업용수로 이용하기 위한 하수재이용 시스템기술 개발과 적용," 한국수자원학회지, 41(6), 29-34(2008)
  2. J. Mendret, C. Guigui, P. Schmitz, and C. Cabassud, "In situ dynamic characterisation of fouling under different pressure conditions during dead-end filtration: Compressibility properties of particle cakes," J. Membr. Sci., 333, 20-29(2009) https://doi.org/10.1016/j.memsci.2009.01.035
  3. Y. Bessiere, P. Bacchin, and B. Jefferson, "Dead End Filtration Of Natural Organic Matter: Experimental Evidence of Critical Conditions," Desalination, 175(1), 29-36(2005) https://doi.org/10.1016/j.desal.2004.09.021
  4. X. Zheng, M. Ernst, P. M. Huck, and M. Jekel, "Biopolymer fouling in dead-end ultrafiltration of treated domestic wastewater," Water Res., 44, 5212-5221(2010) https://doi.org/10.1016/j.watres.2010.06.039
  5. F. Qu, H. Liang, Z. Wang, H. Wang, H. Yu, and G. Li, "Ultrafiltration membrane fouling by extracellular organic matters (EOM) of Microcystis aeruginosa in stationary phase: Influences of interfacial characteristics of foulants and fouling mechanisms," Water Res., 46, 1490-1500(2012) https://doi.org/10.1016/j.watres.2011.11.051
  6. 이병구, 손희종, 노재순, 황영도, 정철우, 강임석, "분류된 천연유기물질을 이용한 막 오염 특성 평가," 대한환경공학회지, 27(12), 1321-1326(2005)

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