氢氧化镁处理含镍废水的研究  

Study on the removal of nickel in wastewater with magnesium hydroxide

作　　者：马艳飞[1] 王九思[2] 宋光顺[1] 张淑英[1] 

机构地区：[1]兰州交通大学环境科学与工程学院,兰州730070 [2]兰州交通大学化工学院,兰州730070

出　　处：《环境污染治理技术与设备》2004年第4期32-34,共3页Techniques and Equipment for Environmental Pollution Control

基　　金：甘肃科技攻关资助项目 (GS0 12 B5 2 0 84)

摘　　要：考察了氢氧化镁用量、搅拌时间、温度及pH对处理效果的影响 ,初步探讨了吸附作用机理。结果表明 :氢氧化镁对镍离子具有较强的吸附性能 ,去除率可达 99%以上。吸附等温线符合Langmuir模式 ,饱和吸附量 17.5 7mg/g。含Cd2 +、Ni2 +和Pb2 +的电镀废水经氢氧化镁吸附后 ,出水达到国家排放标准。The effects of magnesium hydroxide dose, stirring time, temperature and pH value were investigated. The mechanism for the adsorption was studied. The results show that magnesium hydroxide has a better adsorption capacity, the removal rate reaches more than 99%. The adsorption isotherm accords with Langmuir mode, the maximum adsorption amount is 17.57 mg/g. When electroplate wastewater containing Cd 2+ ,Ni 2+ and Pb 2+ was absorbed by magnesium hydroxide, the contents of heavy metal ion are lower than the national discharge standard.

关 键 词：氢氧化镁 含镍废水 废水处理技术 吸附作用 电镀废水 

分 类 号：X781.103[环境科学与工程—环境工程]