聚合硫酸铁去除水中砷的实验研究  

Study on Arsenic Removal from Water by Poly-ferric Sulphate(PFS)

作　　者：肖明尧[1] 张欣[1] 李义连[1] 张炜[1] 

机构地区：[1]中国地质大学

出　　处：《安全与环境工程》2007年第4期49-53,共5页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(40672168)资助

摘　　要：研究了聚合硫酸铁对水中砷在不同条件下的去除效果。实验发现：聚合硫酸铁去除砷的最佳pH值范围为6-8;砷的去除率随聚合硫酸铁加入量的增加而升高;砷去除率随Fe/As比值的增加而增大;Ca^2＋、Mg^2＋有利于砷的絮凝沉淀;PO43-对砷的去除有不利影响,而且PO43-的浓度越大其影响越大。This paper studies the effect of poly-ferric sulphate （PFS） on the concentration of arsenic in water under different conditions. Through the experimental study, the following results are obtained： the optimum range of pH is 6-8 the removal of arsenic increases with the increase of add-on of PFS and also increases with the increase of Fe and As ratios Ca^2＋ and Mg^2＋ ate favorable to flocculate the settlement of arsenic, but the effects are not obvious; PO4^3- has adverse influences on the removal of arsenic, and the more the concentration of PO43- , the greater the influence.

关 键 词：聚合硫酸铁(PFS) 砷 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]