高分子重金属絮凝剂CSAX除铜、除浊性能研究  

STUDY ON THE REMOVING COPPER AND TURBIDITY BEHAVIOR OF MACROMOLECULE HEAVY METAL FLOCCULANT CSAX

作　　者：段丽丽[1] 常青[1] 郝学奎[1] 张永智[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070

出　　处：《环境化学》2008年第1期60-63,共4页Environmental Chemistry

基　　金：国家自然科学基金资助项目(No.20377020).

摘　　要：研究高分子重金属絮凝剂交联淀粉-接枝丙烯酰胺-共聚黄原酸钠(CSAX)的除铜、除浊性能及其影响因素,并与不溶性淀粉丙烯酰胺接枝共聚物(ISA)、不溶性淀粉黄原酸钠(ISX)两种水处理剂进行了比较,结果表明:(1)CSAX兼具ISA和ISX的优点,具有很好的除铜、除浊性能;(2)该絮凝剂对铜的去除具有一定的化学计量关系;(3)pH值对Cu2+的去除有一定的影响,在pH2.0—5.0时,相同投药量下,pH值愈高,Cu2+的去除率愈高;(4)Na+,Mg2+和Ca2+对Cu2+的去除有一定的促进作用;Fe3+在pH值较低时会抑制Cu2+的去除,pH值高时会促进Cu2+的去除;(5)致浊物质的存在可以促进Cu2+的去除.The performance of macromolecule flocculant crosslinked starch-graft-polyacrylamide-co-sodium xanthate（CSAX） for removing Cu^2＋ and turbidity was introduced.And several factors which affect the removal rate of Cu^2＋ were also studied.The result of experiment showed that ：（1）CSAX has the advantage of insoluble starch-graft-polyacrylamide（ISA）and the advantage of insoluble starch xanthate（ISX）,that is,it has a good performance of not only trapping Cu^2＋ and but also removing turbidity;（2） there is a stoichiometric relationship between CSAX and copper;（3） pH value has the effect on the removal rate of Cu^2＋ to some extent.When pH value is between 2.0 and 5.0,the higher the pH value is,the better the Cu^2＋ removal is;（4）Na^＋,Mg^2＋ and Ca^2＋ that coexist with Cu^2＋ can promote the removal rate of Cu^2＋.But if the water sample contains Fe^3＋,the removal rate will be decreased by Fe^3＋ when pH value is low and it will be increased by Fe^3＋ when pH value is high;（5） when Cu^2＋ and turbidity-causing substance coexist in water sample,turbidity-causing substance can promote the removal of Cu^2＋.

关 键 词：高分子重金属絮凝剂 废水 铜 除浊性能 

分 类 号：X703[环境科学与工程—环境工程] TQ314.253[化学工程—高聚物工业]