聚丙烯酰胺预处理自来水厂污泥  

Pretreatment of Sludge from Water Treatment Plant Using Polyacrylamide

作　　者：陈静[1] 陈士才[1] 许建华[1] 王劲[1] 洪觉民[2] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]杭州市自来水总公司,浙江杭州310016

出　　处：《中国给水排水》2004年第9期37-39,共3页China Water & Wastewater

摘　　要：　合理选用聚丙烯酰胺(PAM)并确定其最佳投量可降低自来水厂污泥处理费用,为此选用具有代表性的阳离子和阴离子两种类型PAM预处理自来水厂的污泥。研究结果表明:投加两种类型的PAM均可显著改善污泥的脱水性能,但阴离子型PAM的投量较低;根据毛细吸水时间(CST)变化得到的PAM最佳投量与测定比阻得到的最佳PAM投量一致,故可用CST替代比阻检测污泥的脱水性能;测定离心液和滤液粘度也是确定PAM最佳投量的一种快速、可靠的方法,也可用于PAM投量的在线控制。Rational selection of polyacrylamide (PAM) and determination of its optimal dosage can reduce sludge treatment cost in water treatment plant,and therefore,typical cationic and anionic PAM were chosen for pretreatment of sludge from water treatment plant.The study result shows that dosing of both kinds of PAM can significantly improve the sludge dewatering performance,but dosage of anionic PAM is lower.The optimal dosage of PAM obtained from the variation of capillary suction time (CST) is in consistence with that by determination of specific resistance,and so sludge dewatering performance can be measured by CST in place of specific resistance.Measurement of viscosity of centrate and filtrate is a rapid and reliable way to determine the optimal PAM dosage,and can be used for on-line control of PAM dosage.

关 键 词：自来水厂污泥 预处理 聚丙烯酰胺 比阻 毛细吸水时间 

分 类 号：X703[环境科学与工程—环境工程]