The result shows that the PFS has the highest arsenic removal efficiency than FeCl3 and FeSO4, oxidation - coagulation process have higher arsenic removal rate than coagulation process.

• 研究结果表明,聚合硫酸铁较三氯化铁、硫酸亚铁对原水中砷的去除效果好;用氧化与混凝组合工艺较单纯用混凝工艺对砷的去除率高;