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The Membrane Society of Korea (한국막학회)
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Effect of pH in Hybrid Water Treatment Process of PVdF Nanofibers Spiral Wound Microfiltration and Granular Activated Carbon

PVdF 나노섬유 나권형 정밀여과와 입상 활성탄의 혼성 수처리 공정에서 pH의 영향

  • Kyung, Kyu Myung (Dept. of Environmental Sciences & Biotechnology, Hallym University) ;
  • Park, Jin Yong (Dept. of Environmental Sciences & Biotechnology, Hallym University)
  • 경규명 (한림대학교 환경생명공학과) ;
  • 박진용 (한림대학교 환경생명공학과)
  • Received : 2015.08.16
  • Accepted : 2015.08.28
  • Published : 2015.08.31
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Abstract

Flat membrane with $0.4{\mu}m$ pore size was prepared with PVdF (polyvinylidene fluoride) nanofiber, which has the advantages such as excellent strength, chemical resistance, nontoxic, non-combustibility. After that, spiral wound module was manufactured with it including a woven paper. Effect of pH was studied by comparing permeate fluxes and rejection rates of the spiral wound module using simulation solution including kaolin and humic acid. The recovery rate and filtration resistance were calculated after water back-washing at the end of filtration experiment. In addition, after the water filtrated by the spiral wound module was passed through a column filled with GAC (granular activated carbon), adsorption effect of GAC was investigated by measuring the turbidity and $UV_{254}$ absorbance.

강도가 강하고 내약품성, 무독성, 내연소성의 장점을 가지고 있는 PVdF (polyvinylidene fluoride) 나노섬유로 기공이 $0.4{\mu}m$ 평막을 제조한 후, 그 평막으로 부직포를 첨가하여 나권형 모듈을 제작하였다. 카올린과 휴믹산으로 조제한 모사용액과 순수를 대상으로 나권형 모듈의 투과선속과 처리율을 비교하여 pH의 영향을 알아보았고, 여과실험 후 물 역세척을 하여 회복률과 여과저항을 계산하였다. 또한, 나권형 모듈을 통과한 처리수를 입상 활성탄(GAC, granular activated carbon)으로 채워진 컬럼에 통과시킨 후, 탁도와 $UV_{254}$ 흡광도를 측정하여 GAC의 흡착 효과를 고찰하였다.

Keywords

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