| 摘要 |
PURPOSE:To prevent activated sludge from bulking, by adding a water-soluble polymer prepd. by the reaction of dialkylamine and occasionally ammonia with epihalohydrin to waste water contg. activated sludge which has caused bulking. CONSTITUTION:0.05-25pts.wt. (basing on 100pts.wt. dry solid in activated sludge) of a water-soluble cationic polymer prepd. by the reaction of dialkylamine and occasionally ammonia (<= equimolar amt. to dialkylamine) with epihalohydrin, is added to activated sludge to be bulked or having been already bulked by the Hyphomycetes of type 0041, or to waste water contg. said sludge. As the result, the activated sludge is prevented specifically from bulking due to the Hyphomycetes of type 0041. Further, the increase of SVI (sludge volume index) of the activated sludge is retarded in a short time, the concn. of the activated sludge is held at a high level, and the reducing effect for BOD is enhanced remarkably.
|
