Korean Membrane Journal

The Membrane Society of Korea (한국막학회)
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Advanced Water Treatment by Tubular Alumina Ceramic Ultrafiltration: Effect of Periodic Water-back-flushing Period

  • Park, Jin-Yong (Department of Environmental Sciences & Biotechnology, Hallym University) ;
  • Lee, Song-Hui (Department of Environmental Sciences & Biotechnology, Hallym University)
  • Published : 2009.12.31
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Abstract

The periodic water-back-flushing using permeate water was performed to minimize membrane fouling and to enhance permeate flux in tubular ceramic ultrafiltration (UF) system for Gongji stream water treatment in Chuncheon city. The filtration time (FT), which was the water-back-flushing period, 2 min with periodic 15 sec water-back-flushing showed the highest value of dimensionless permeate flux ($J/J_o$), and the lowest value of resistance of membrane fouling ($R_f$), and we acquired the highest total permeate volume ($V_T$) of 6.35 L. Consequently FT 2 min at back-flushing time (BT) 15 sec could be the optimal condition in advanced UF water treatment of Gongji stream. Then the average rejection rates of pollutants by our tubular ceramic UF system were 99.4% for Turbidity, 31.8% for $COD_{Mn}$, 22.6% for $NH_3$-N and 65.9% for T-P.

Keywords

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