Abstract:

Compound flocculant PAFC-ST-AM was prepared with varying compound reaction conditions，such as the mass ratio of PAFC with ST-AM，pH value and compound time. The best applied conditions of the compound flocculant were obtained by orthogonal experiment [L₉（3⁴）] on simulated waste water containing phosphorus. The removing rate of phosphorus can be up to 92.36% when the PAFC：ST-AM is 4∶1，flocculant dosage is 5 mL/500 mL and pH value is 8.

摘要：

制备了聚合氯化铝铁-淀粉-丙烯酰胺（PAFC-ST-AM）复合絮凝剂，考察了PAFC与ST-AM的质量配比、反应液的pH值和复合时间等复合反应条件。通过对含磷模拟废水的絮凝试验 [正交L₉（3⁴）]，得出了复合絮凝剂的最佳应用条件。结果显示，当PAFC∶ST-AM为4∶1，投加量为5 mL/500 mL，pH值为8时，磷的去除率可达92.36%。