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Method for preventing bulking of activated sludge

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专利汇可以提供Method for preventing bulking of activated sludge专利检索,专利查询,专利分析的服务。并且PURPOSE: To quickly suppress the increase of the sludge index of activated sludge by adding a water soluble cationic polymer obtd. by the reaction of a dialkyl amine, ammonia and epichlorohydrin to the activated sludge.
CONSTITUTION: The water soluble cationic polymer obtd. by the reaction of the dialkyl amine, ammonia and epichlorohydrin is added at 0.05W25pts.wt. per 100pts.wt. dry solid content of the activated sludge to said activated sludge. The water soluble cationic polymer is selected from the polymers of which the intrinsic viscosity measured with an aq. soln. of 2mol KBr is ≥0.05. As a result, the increase of the sludge index of the activated sludge can be quickly suppressed. The bulking of the activated sludge in an aeration tank does not arise and the settling volume is decreased. The concn. of the activated sludge is maintained high and the effect of removing BOD is remarkably improved. Further the settling and separation of the activated sludge in the settling tank are made extremely easy.
COPYRIGHT: (C)1987,JPO&Japio,下面是Method for preventing bulking of activated sludge专利的具体信息内容。

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