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Effect of Water-back-flushing in Advanced Water Treatment System by Tubular Alumina Ceramic Ultrafiltration Membrane  

Park, Jin-Yong (Department of Environmental Sciences & Biotechnology, Hallym University)
Lee, Song-Hui (Department of Environmental Sciences & Biotechnology, Hallym University)
Publication Information
Membrane Journal / v.19, no.3, 2009 , pp. 194-202 More about this Journal
Abstract
In this study periodic water-back-flushing using permeate water was performed to minimize membrane fouling and to enhance permeate flux in advanced water treatment by tubular ceramic ultrafiltration membrane for Gongji stream in Chuncheon city. The back-flushing period (FT, filtration time) 2 min with periodic water-back-flushing of 15 sec showed the highest value of dimensionless permeate flux (permeate flux vs. initial permeate flux), and the lowest value of resistance of membrane fouling. Also in the results of BT effect at fixed FT 10 min, BT (back-flushing time) 20 sec showed the lowest value of resistance of membrane fouling and the highest value of dimensionless permeate flux, and we could be obtained the highest total permeate volume of 107.3 L. Consequently FT 10 min and BT 20 sec could be the optimal condition in Gongji stream water treatment, which was the exactly same results of our previous tubular alumina microfiltration. Then the average rejection rates of pollutants by our tubular ceramic UF system were 97.0% for turbidity, 32.1 % for chemical oxygen demand by manganese method, 28.8% for ammoniac nitrogen and 54.4% for T-P.
Keywords
ultrafiltration; ceramic membrane; water-back-flushing; water treatment;
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Times Cited By KSCI : 4  (Citation Analysis)
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