The results showed that when the concentration of PAFS was 500 mg/L,PAM 10mg/L,and pH value(4.21),the removing rates of COD of the wastewater was the highest.

• 结果表明当聚合硫酸铝铁(PAFS)的质量浓度为500 mg/L；聚丙烯酰胺(PAM)的质量浓度为10 mg/L；pH为4.；21时；混凝处理后的废水COD去除率最大