高分子絮凝剂对活性污泥脱水性能影响的比较  

Research of Effects of Polymer Flocculants on Dewatering Performance of Activated Sludge

作　　者：赵旭德[1] 陈龙[1] 吴琦芳 

机构地区：[1]湖北理工学院环境科学与工程学院,湖北黄石435003

出　　处：《湖北理工学院学报》2013年第6期12-15,共4页Journal of Hubei Polytechnic University

基　　金：湖北省高等学校省级教学研究项目(项目编号:2009321)

摘　　要：为了比较用PAC、阳离子PAM、阴离子PAM和非离子PAM作为絮凝剂，改善剩余污泥脱水性能的效果，分别使用不同投加量的以上5种絮凝剂，对城市污水厂剩余污泥进行真空过滤脱水，对比污泥比阻值、含水率、脱水时间的变化情况。结果表明：PAC、阳离子PAM、阴离子PAM和非离子PAM可有效降低污泥比阻和含水率，投加量在90-110mg·L^-1时可满足将含水率降至70％的要求。投加量在50～100mg·L^-1时，阳离子PAM、阴离子PAM、非离子PAM和PAC的调理效果相近；投加量在100～200mg·L^-1时，阳离子PAM的调理效果优于阴离子PAM、非离子PAM和PAC；阴离子PAM、非离子PAM和PAC的投加量约为100mg·L^-1时脱水效果最好；阳离子PAM投加量约为150mg·L^-1时脱水效果最好。This paper mainly researched the effects of different polymer flocculants on the residual sludge of urban sewage after being suction filtrated under different dosages while the floeeulants were mainly PAC, cat- ionic PAM, anionic PAM and nonionic PAM. The main indexes were sludge specific resistance, moisture con- tent, drying time. The results showed that all the floeeulants could effectively reduce the sludge specific resist- ance and moisture content. When the dosage were in 90 - 110 mg·L^-1 ,all the floceulants can meet the re- quirements that the moisture content decreased to 70%. Under the dosage of 50 - 100 mg ·L^-1, the effects of all the flocculants were similar. When the dosage were in 100 - 200 mg·L^-1 ,the effects of cationic PAM was better than anionic,nonionie PAM and PAC. When the dosage were 100 mg·L^-1 ,anionic,nonionic PAM and PAC obtained the best dewatering performance while that for cationic PAM was 150 mg ·L^-1

关 键 词：剩余污泥 脱水 PAC 阳离子PAM 阴离子PAM 非离子PAM 

分 类 号：X705[环境科学与工程—环境工程]