表面活性剂与聚丙烯酰胺对污泥脱水性能的影响  

Effect of Surfactant and Polyacrylamida on Dewaterability of Sludge

作　　者：戢伟[1] 张惠灵[1] 王晓星[1] 刘雪成[1] 杨瑾[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《矿产综合利用》2013年第5期34-38,共5页Multipurpose Utilization of Mineral Resources

摘　　要：研究了在处理污泥过程中,表面活性剂(DTAB)与聚丙烯酰胺(PAM)对絮体特征、污泥沉降性能和脱水性能的影响。结果表明,当DTAB和PAM投加量分别为0.08g/g和0.8mg/gDS(干污泥)时,污泥泥饼的含水率最低,为65.41%。表面活性剂的调质机理研究结果表明,经DTAB和PAM联合调理的污泥最大粒径小于只经过PAM调理污泥的最大料径,此时污泥絮体破坏程度较高。试验结果表明,DTAB和PAM联合作用,能够使破坏污泥絮体结构,减少絮体中游离结合水的含量,改善了污泥的脱水性能。The effects of cation surfactant （DTAB） and polyacrylamida （PAM） on flocs characteristic,settleability and dewaterability of sludge were studied.The experimental results indicated that when the dosages of DTAB and PAM are 0.08g/gDS（dewatered sludge）and 0.8mg/gDS respectively,water content in sludge cakes is minimum,being 65.41％.The test results of action mechanism indicated that flocs size distribution after DTAB and PAM conditioning is less than one after PAM conditioning.The sludge flocs were destroyed.The experimental results show that,the addition of DTAB and PAM can destroy the sludge flocs structure,reduce the free water content in the flocs,and improve the dewatering performance of sludge.

关 键 词：表面活性剂（DTAB） 聚丙烯酰胺（PAM） 脱水性能 污泥 过滤 

分 类 号：TD989[矿业工程—选矿]