河蚬对曝气池污泥的减量效果研究

Reduction of Sewage Sludge in Aeration Tank with Corbicula fluminea

城市污泥的减量化处理是当前污水处理厂急需解决的问题之一。以南昌市某污水处理厂曝气池污泥为供试对象,研究河蚬对污泥有机质、SS、N和P的减量化效果。结果表明,24 h后污水污泥有机物去除率达到35.78%。河蚬对水体SS、N和P的减量化效果明显,随着处理时间的延长,河蚬对水体中N的去除呈下降趋势,对水体P的去除呈先增后下降趋势。至第9天,河蚬对水体N和P的去除率分别达到67%和53%。

The reduction of the municipal＇s sludge is one of the urgent problems at present. The reduction effects of corbicula fluminea on organic matter（ OM）,suspended solids（ SS）,total nitrogen（ NT） and phosphorous（ PT） in aeration tank sludge were studied in this paper. The test sewage sludge was sampled from a municipal sewage treatment plants in Nanchang. The results showed that the removal rate of OM in sewage sludge reached to 35. 78% with corbicula fluminea after 24 hours.Corbicula fluminea could reduce the content of SS,NTand PTobviously,and longer time we spent,better effects we got. The removal rates of the N and P were 67% and 67% respectively to 9 days.