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Study on the Theoretical and Experimental Application of Filtration-Permeation Method  

Song, Yun-Min (Department of Environmental Engineering, Inha University)
Yim, Sung-Sam (Department of Environmental Engineering, Inha University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.2, 2008 , pp. 161-167 More about this Journal
Abstract
Using an experimental method named filtration-permeation, the influence of sedimentation during filtration was studied for the suspensions composed of particles and that of flocs. The average specific cake resistances measured by filtration do not give accurate values because of the sedimentations during filtration, but the permeation data give quite accurate values. The prolonged permeation rates for the cake formed from particulate suspension do not change, but that rate from the floc filtration changes by the sweeping of flocculant. It is proposed that the cake compressibility can be measured with one set of filtration-permeation experiment by step increase of pressure during permeation period. The another experimental method which can shorten experimental time for floc filtration using filtrationpermeation is also proposed.
Keywords
Cake Filtration; Filtration-permeation Method; Average Specific Cake Resistance; Filtration with Sedimentation; Permeation; Compressibility;
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