상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제19권6호
  • /
  • Pages.775-780
  • /
  • 2005
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

오염물질의 특성이 막오염 지수에 미치는 영향

Effect of Foulant Characteristics on Membrane Fouling Index

  • 박찬혁 (고려대학교 공과대학 사회환경시스템공학과) ;
  • 김하나 (고려대학교 공과대학 사회환경시스템공학과) ;
  • 홍승관 (고려대학교 공과대학 사회환경시스템공학과)
  • 투고 : 2005.09.05
  • 심사 : 2005.12.13
  • 발행 : 2005.12.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This study was performed to investigate the effect of foulant characteristics on Membrane fouling index such as Silt Density Index (SDI) and Modified Fouling Index (MFI). A linear relationship was found relating the fouling index (both SDI and MFI) on particle concentration, but fouling index values were nonlinearly (exponentially) with increasing organic concentration. When organic matter was the primary cause of fouling, the MFI was not accurately predicted due to internal fouling such as pore adsorption. The fouling index was determined mainly by particle characteristics when both particle and organic coexisted in the feed water. This observation was attributed to lessening of organic pore adsorption by particle cake layer formed on the membrane surface. Bench-scale actual fouling experiments demonstrated that permeate flux declines much faster with feed water containing particles than organic matters although fouling potential predicted by SDI values were identical, indicating that the accurate prediction of fouling potential requires the development of fouling index reflecting different foulant characteristics.

키워드

과제정보

연구 과제번호 : 상업용 FRM(Fouling Resistant membrane)의 비교 평가 및 Fouling Mechanism 규명

연구 과제 주관 기관 : (주)새한 CSM

참고문헌

  1. Boerlage, Siobhan F.E., Kennedy, M.D., Dickson, M.R., EI- Hodali, Dima E.Y., Schippers, J.C (2002) The Modified Fouling Index using Ultrafiltration Membranes (MFI-UF): Characterization, Filtration Mechanisms and Proposed Reference Membrane, Journal of Membrane Science, 197, pp. 1-21 https://doi.org/10.1016/S0376-7388(01)00618-4
  2. Boerlage, Siobhan F.E., Kennedy, M., Aniye, M.P., Schippers, J.C (2003) Applications of the MFI-UF to Measure and Predict Particulate Fouling in RO Systems, Journal of Membrane Science, 220, pp. 97-116 https://doi.org/10.1016/S0376-7388(03)00222-9
  3. Brauns, E., Van Hoof, E., Molenberghs, B., Dotremont, C, Doyen, W., Leysen, R. (2002) A New Method of Measuring and Presenting the Membrane Fouling Potential, Desalination, 150(1), pp. 31-43 https://doi.org/10.1016/S0011-9164(02)00927-X
  4. Elimelech, M., Zhu, X., Childress, A., Hong, S. (1997) Role of Surface Morphology in Colloidal Fouling of Cellulose Acetate and Composite Polyamide RO Membranes, Journal of Membrane Science, 127, pp. 101-109 https://doi.org/10.1016/S0376-7388(96)00351-1
  5. Faibish, R.S., Elimelech, M., Cohen, Y. (1998) Effect of Interparticle Electrostatic Double Layer Interactions on Permeate Flux Decline in Crossflow Membrane Filtration of Colloidal Suspensions: An Experimental Investigation, Journal of Colloidal and Interface Science, 204, pp. 77-86 https://doi.org/10.1006/jcis.1998.5563
  6. Hong, S., Elimelech, M. (1997) Chemical and Physical Aspects of Natural Organic Matter (NOM) Fouling of Nanofiltration Membranes, Journal of Membrane Science, 132, pp. 159-181 https://doi.org/10.1016/S0376-7388(97)00060-4
  7. Schippers, J.C, Verdouw,J. (1980) The Modified Fouling Index, a Method of Determining the Fouling Chracteristics of Water, Desalination, 32, pp. 137-148 https://doi.org/10.1016/S0011-9164(00)86014-2
  8. Singh, G., Song, L. (2005) Quantifying the Effect of Ionic Strength on Colloidal Fouling Potential in Membrane Filtration, Journal of Colloidal and lnterface Science, 284, pp. 630-638 https://doi.org/10.1016/j.jcis.2004.10.030
  9. Standard Test Method for Silt Density Index (SDI) of Water, ASTM D4189, pp. 395-397
  10. Vrijenhoek, E.M., Hong, S., Elimelech, M. (2001) Influence of Membrane Surface Properties on Initial Rate of Colloidal Fouling of Reverse Osmosis and Nanofiltration Membranes, Journal of Membrane Science, 188, pp. 115-128 https://doi.org/10.1016/S0376-7388(01)00376-3
  11. Vrouwenvelder, J.S., Kappelhof, J.W.N.M., Heijman, S.G.J., Schippers, J.C, Kooij, D. (2003) Tools for Fouling Diagnosis of NF and RO Membranes and Assessment of the Fouling Potential of Feed Water, Desalination, 157(13), pp. 361-365 https://doi.org/10.1016/S0011-9164(03)00417-X
  12. Zhu, X., Elimelech M. (1997) Colloidal fouling of reverse osmosis membranes: measurements and fouling mechanisms, Environmental Science and Technology, 31, pp. 3654-3662 https://doi.org/10.1021/es970400v