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멤브레인 = Membrane Journal v.14 no.2, 2004년, pp.149 - 156   피인용횟수: 7

광촉매 반응과 침지형 정밀여과를 이용한 자연산 유기물의 제거
Use of a Combined Photocatalysis/Microfiltration System for Natural Organic Matter Removal

추광호   (경북대학교 환경공학과UU0000096  ); 박경원   (경북대학교 환경공학UU0000096  ); 김문현   (대구대학교 건설환경공학부UU0000355  );
  • 초록

    본 연구에서는 광촉매 반응과 막분리 기술을 접목시킨 혼성 고도 정수처리 공정에서 소독 부산물의 전구체로 알려진 자연산 유기물을 효과적으로 제거하고자 하였고 다양한 운전 조건에서 시스템의 성능을 비교 평가하였다. 자연산 유기물은 흡입여과 방식의 분리막과 TiO $_2$ 광촉매를 이용하여 광분해하였을 때 광촉매 투입량의 증가에 따라 반응속도가 증가하였지만 과량의 촉매 주입시에는 반응 속도 향상에 오히려 부정적으로 작용하였다. 자연산 유기물을 보다 효과적으로 제거하기 위해 산화철 주입, TiO $_2$ 표면처리, 분리막 표면코팅을 시도하여 제거특성 및 운전에 따른 막여과 특성을 평가하였다. 산화철 주입은 초기에 흡착작용으로 인해 제거율 증가를 보였으나 반응이 진행됨에 따라 산화철 입자에 의한 광산란으로 광분해 효율이 오히려 감소되었다. 산화철 입자에 의한 광산란을 제어하고자 TiO $_2$ 표면을 광처리와 열처리 방법을 이용해 철을 직접 부착시킨 경우 긍정적인 효과를 얻지 못했다. 그러나 산화철로 막표면을 코팅하여 광산란 효과를 배제시킨 경우에는 향상된 결과를 보였다 막투과 플럭스 15 L/ $m^2$ -h에서 정밀여과를 수행하였을 때 TiO $_2$ 나 산화철에 의한 막오염은 거의 일어나지 않았고 안정된 막투과도를 나타내었다.


    This work focused on the degradation of natural organic matter (NOM) present in lake water using a combined pkotocatalysisimicrofiltration (MF) process. The system performances were investigated in terms of organic removal efficiency and membrane permeability. The addition of iron oxide particles (IOP) into the photocatalytic membrane reactor improved initial NOM removal by sorption, but during photocatalysis the removal efficiency was reversed, probably due to the scattering of UV light by IOP. The modification of TiO $_2$ surfaces by IOP deposition was conducted to enhance the photocatalytic NOM removal efficiency. A minimal amount of Impregnation of IOP on TiO $_2$ surfaces was required to prevent the light scattering effect as well. The coating of MF membranes with IOP helped to improve the NOM removal efficiency while sorbing NOM by IOP. Regardless of tile operating conditions and particles addition examined, no significant fouling was occurring at a flux of 15 L/ $m^2$ -h during entire MF operation.


  • 주제어

    photocatalysis .   TiO $_2$ .   microfiltration .   natural organic matter .   advanced water treatment.  

  • 참고문헌 (22)

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    3. An Integrated Flow Reactor-Membrane Filtration System for Heterogeneous Photocatalyst Part Ⅱ: Experiments on the Ultrafiltration Unit and Combined Operation , K.Sopajaree;S.A.Qasim;S.Basak;K.Rajeshwar , J. Appl. Electrochem. / v.29,pp.1111,
    4. Separation of Titanium Dioxide Photocatalyst in Its Aqueous Suspensions by Coagulation with Basic Aluminum Chloride , S.Kagaya;K.Shimizu;R.Arai;K.Hasegawa , Wat. Res. / v.33,pp.1753,
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  • 이 논문을 인용한 문헌 (7)

    1. Park, Jin-Yong ; Lee, Hyuk-Chan 2008. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Microfiltration and Activated Carbon Adsorption: Effect of GAC Packing Fraction" 멤브레인 = Membrane Journal, 18(3): 191~197     
    2. Park, Jin-Yong ; Lee, Hyuk-Chan 2009. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Microfiltration and Activated Carbon Adsorption: Effect of Water-back-flushing Time and Period" 멤브레인 = Membrane Journal, 19(1): 7~18     
    3. Park, Jin-Yong ; Park, Gil-Yong 2009. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Microfiltration and Activated Carbon Adsorption: Effect of Organic Materials in $N_2$-back-flushing" 멤브레인 = Membrane Journal, 19(3): 203~211     
    4. Park, Jin-Yong ; Lee, Gwon-Seop 2011. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Photocatalyst and Ceramic Microfiltration: Effect of Organic Materials in Water-back-flushing" 멤브레인 = Membrane Journal, 21(1): 72~83     
    5. Cong, Gao-Si ; Park, Jin-Yong 2011. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Ultrafiltration and Photocatalyst: 1. Effects of Photocatalyst and Water-back-flushing Condition" 멤브레인 = Membrane Journal, 21(2): 127~140     
    6. Cong, Gao-Si ; Park, Jin-Yong 2011. "Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Ultrafiltration and Photocatalyst: 2. Effect of Photo-oxidation and Adsorption" 멤브레인 = Membrane Journal, 21(2): 201~211     
    7. Park, Jin Yong ; Kim, Sunga ; Bang, Taeil 2016. "Effect of Water Back-flushing Time and Polypropylene Beads in Hybrid Water Treatment Process of Photocatalyst-coated PP Beads and Alumina Microfiltration Membrane" 멤브레인 = Membrane Journal, 26(4): 301~309     

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