改性木质素磺酸盐处理含镉废水的研究  

Study on the treatment of cadmium-containing wastewater with modified lignosulfonate

作　　者：李爱阳[1] 李大森 李安伍[1] 

机构地区：[1]湖南工学院化工系,湖南衡阳421002 [2]长沙远大住宅工业有限公司,湖南长沙410008

出　　处：《工业水处理》2009年第11期28-31,共4页Industrial Water Treatment

基　　金：湖南省教育厅科研计划项目(07C030);衡阳市工业科研开发计划项目(06KG59)

摘　　要：用自制的改性木质素磺酸盐处理电镀含镉废水,实验表明:在室温条件下,单体用量为1.5mol/L,反应48h时,可得到相对分子质量较大、絮凝效果较好的改性木质素磺酸盐。当pH控制在7,改性木质素磺酸盐用量80mg/L,絮凝60min,室温条件下,可使含镉废水中Cd2+的去除率达到99%以上。The cadmium-containing wastewater in electroplating has been treated by flocculation with a kind of home-made flocculant. The results show that the modified lignosulfonate having bigger molecular and better floc- culation effect can be obtained, when the monomer dosage is 1.5 mol/L and reaction time is 48 h, at room temperature. Using the modified lignosulfonate for treating cadmium-containing wastewater, when its pH is 7, dosage of modified lignosulfonate 80 mg/L, flocculation time 60 min and at room temperature, the removal rates of Cd^2＋ from cadmium-containing wastewater reaches more than 99%.

关 键 词：电镀废水 镉离子 木质素磺酸盐 

分 类 号：X703.1[环境科学与工程—环境工程]