摘要
采用生化物化耦合方法,向活性污泥系统中投加三氯化铁(FeCl 3),考察出水COD、TP、TN、脱氢酶活性(DHA)、胞外聚合物(EPS)的变化。结果表明,FeCl 3对DHA和EPS均为增活作用,可激活污泥活性,提高出水质量。FeCl 3投加量为50 mg/L时,DHA和EPS的活性最强,分别为55.2 mgTF/(h·L)和56.6 mg/gMLSS,COD、TP和TN去除率分别为92.4%,92%和89.4%。
The variety of COD,TP,TN,DHA and EPS in the effluent were investigated by adding FeCl 3 to the activated sludge system by biochemical and physicohemical coupling method.The results showed that FeCl 3 had an active effect on both DHA and EPS,could activate the activity of the sludge and improve the quality of effluent.When FeCl 3 dosage was 50 mg/L,DHA and EPS reached the optimal activity of 55.2 mgTF/(h·L)and 56.6 mg/gMLSS,respectively.The removal rate of COD,TP and TN was 92.4%,92% and 89.4%,respectively.
作者
李晓溪
Li Xiaoxi(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《供水技术》
2019年第5期23-26,共4页
Water Technology
关键词
三氯化铁
活性污泥
胞外聚合物
脱氢酶
ferric chloride
activated sludge
extracellular polymer
dehydrogenase
