电镀废水中镍的回收和利用  

Recovery and Reuse of Nickel from Electroplating Wastewater

作　　者：刘娟[1] 张振忠[1] 赵芳霞[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《化工环保》2009年第6期545-548,共4页Environmental Protection of Chemical Industry

基　　金：江苏省科技厅社会发展计划(BS2007120);江苏省火炬计划项目(H2007306);国家中小型企业创新项目(08026213700982)

摘　　要：采用化学沉淀法回收电镀含镍废水中的Ni^(2+),研究了各工艺因素对回收效果的影响。实验结果表明,回收电镀含镍废水中Ni^(2+)的最佳工艺条件为:反应温度30℃,废水pH 12～13,0.1mol/L的NaOH溶液加入量70 mL,以聚丙烯酸钠为絮凝剂,搅拌转速1 250 r/min,搅拌时间2 min。将回收产物Ni(OH)_2用作润滑油添加剂可有效改善润滑油的摩擦磨损性能。Ni^2＋ in the nickel-containing electroplating wastewater was recovered by chemical precipitation process, and the factors affecting the recovery effect were studied. The optimum process conditions for Ni^2＋ recovery are as follows： reaction temperature 30℃, wastewater pH 12 - 13, 0.1 mol/L NaOH solution dosage 70 mL, sodium polyacrylate used as flocculant, stirring speed 1 250 r/min and stirring time 2 min. The product Ni（OH） 2 can be used as additive in lubricating oil and significantly improve its antifriction and antiwear properties.

关 键 词：电镀废水 镍离子 化学沉淀法 回收工艺 润滑油 添加剂 废水处理 

分 类 号：X781.1[环境科学与工程—环境工程]