摘要
介绍了化学镀铜与镀镍老化废液的处理技术。方法是,对所含金属离子利用老化废液中残存的还原剂在云母上将铜及镍还原析出后进行去除。然后对有机物EDTA在酸性范围沉淀去除,酒石酸使呈钙盐去除。化学镀镍液的中琥珀酸、酒石酸用溶剂萃取法去除。对化学镀铜液中有害的甲酸用多级电位法,使分解为碳酸气与氢。对亚磷酸用过氧化氢氧化为磷酸后呈钙盐去除。
Chemical copper and nikel plating wastewater treatment techniques were recommended. Using the residual reductant in wastewast on mica to react with the metallic ions and then remove copper and nikel. To precipite organic substance EDTA under acidic condition, tartaric acid form calcium salf and then removed. Using solvent to extract succinic acid in and tartaric acid in chemical nikel plating liquid. Using multi-grade potentiometry to decompose hazardous formic acid in chemical copper plating liquid into CO2 and H2. For phosphorous acid, using H2O2 to oxidize into phosphoric acid and form calcium salt, then remove.
出处
《上海环境科学》
CAS
CSCD
1995年第12期16-19,共4页
Shanghai Environmental Sciences
关键词
镀镍
镀铜
废水处理
回收
电镀废水
Nikel plating Copper plating Wastewater treament Rocovery
