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DOI : ,    Vol.8, No.2, 27 ~ 35, 2000
Title
Dewatering characteristics of water Treatmen piant sludges by organic and inorganic coagulant dose
이용두Yong Do Lee,장성호Seong Ho Jang,김창영Chang Young Kim
Abstract
In this study Bu¨chner funnel test and CST test were carried out to investigate the dewatering property of sludge produced at the water treatment plant. According to the water content of sludge the specific resistance coefficients(Y), the capillary suction time(CST) and the optimum quantity of polymer and lime dose were acquired. When polymer was injected, the optimum quantity of polymer, the specific resistance coefficients and the capillary suction time varied according to the water content of the sludge. But when lime was injected, the more the quantity of lime was injected, the smaller were the specific resistance coefficients and the capillary suction time. After the Bu¨chner funnel test, COD concentration of the supernatant became lower with increasing the quantity of polymer and lime dose. But COD concentration of the subnatant became higher.
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