PAC和PAM复合混凝剂处理垃圾渗滤液的研究  

Treatment of Landfill Leachate by Composite Coagulant of Polyaluminum Chloride and Polyacrylamide

作　　者：李志伟[1] 孙力平[1] 吴立[1] 

机构地区：[1]天津城市建设学院环境与市政工程系,天津300384

出　　处：《中国给水排水》2009年第23期85-87,共3页China Water & Wastewater

摘　　要：通过投加混凝剂聚合氯化铝(PAC)和助凝剂聚丙烯酰胺(PAM)对垃圾渗滤液进行混凝沉淀处理,根据单因素和正交试验确定其最佳工艺条件。结果表明,混凝的最佳条件:PAC投加量为750mg/L、PAM投加量为15mg/L、快速(150r/min)搅拌1min、中速(45r/min)搅拌6min、慢速(35r/min)搅拌7min、在快速混合之后投加助凝剂。在该处理条件下,系统对垃圾渗滤液中COD和浊度的去除率达到最大,分别为27.45%和65.80%。Polyaluminum chloride (PAC) as coagulant and polyacrylamide (PAM) as coagulant aid were added for coagulation and sedimentation of landfill leachate,and the optimal process conditions were determined according to single factor and orthogonal experiments. The optimal coagulation conditions are PAC dosage of 750 mg/L,PAM dosage of 15 mg/L,quick stirring (150 r/min)for 1 min,medium-speed stirring (45 r/min)for 6 min,slow stirring (35 r/min) for 7min and adding coagulant aid after quick mixing. Under above cond...

关 键 词：垃圾渗滤液 聚合氯化铝(PAC) 聚丙烯酰胺(PAM) 混凝沉淀 

分 类 号：X703[环境科学与工程—环境工程]