摘要：从环境保护的角度出发，针对工厂搬迁后遗留的氰化电镀槽液、含氰废水和废渣，提出了详细的处理方法、原理和工艺流程。先用碱性氯化法破氰(以次氯酸钠为药剂)，再用硫化钠沉淀重金属离子，最后调节pH。总结了处理过程中的安全注意事项。处理后的排水达到GB 8978-1996的一级排放标准。
关键词：氰化电镀；废水；废渣；处理；环保；排放
中图分类号：X781．1 文献标志码：A
文章编号：1004-227X(2009)09-0038-03
Treatment of cyanide-containing wastewater and waste residue from cyanide electroplating bath//HUANG Ping
Abstract：The detailed method，principle and process flow for treating used cyanide electroplating solutions as well as cyanide-conmining wastewater and waste residue after factory removal were presented from the viewpoint of environmental protection．Firstly，cyanide is decomposed by alkaline chlorination with sodium hypochlorite；secondly，heavy metal ions are precipitated by the addition of sodium sulfide；and finally，pH is adjusted．Some safety notes during treatment process were summarized．The treated effluent can meet the requirements of the first grade of GB 8978--l996 standard．
Keywords：cyanide electroplating；wastewater；waste residue；treatment；environmental protection；emission
Author"s address：Chongqing Changan Industry(Group) C0．，Ltd．，Chongqing 400023，China
