复配絮凝剂在城市生活污水处理中的应用

Application of Composite Flocculant in Urban Domestic Sewage Treatment

将聚合氯化铝铁（PAFC）与聚丙烯酰胺（CPAM）复配用于处理城市生活污水,絮凝搅拌试验得出最佳的应用条件为：PAFC投加量30 mg/L,CPAM为4 mg/L,pH为6～8.此条件下具有沉降速度快、除浊效率高等特点.聚合氯化铝铁与聚丙烯酰胺复配的絮凝性能比聚合氯化铝铁更加优异.

A flocculant was prepared with polyaluminum ferric chloride （PAFC） and polyacrylamide （CPAM） and was used to treat urban domestic sewage. The optimum synthesis and application conditions were identified in flocculation and agitation tests ： addition of PAFC ： 30 mg/L, addition of CPAM ： 4 mg/L, pH value： 6 to 8. Both the settling velocity and the turbidity removal efficiency were high at such conditions. The flocculant prepared with PAFC and CPAM is better than PAFC in flocculation performance.