摘要
针对含有Cl^-、Zn^(2+)、Cd^(2+)、Fe^(2+)、NH_4^+等多种离子的废水,分别以CaO、NaOH、Na_2S、Na_3PO_4和Na_2CO_3为单一沉淀剂,以及同时采用两种沉淀剂进行除Cd^(2+)。试验结果表明:以CaO或NaOH与Na_2CO_3为复合沉淀剂处理含镉废水效果较好,处理后的废水中镉质量浓度低于0.1mg/L,达到国家排放标准。
The removal of Cdz＋ from wastewater containing Cl^-, Zn^2＋ ,Cd^2＋ ,Fe^2＋ ,NH^＋ using CaO, NaOH, Na2 S, Naa PO4 and Na2CO3, respectively and two precipitants simultaneously were studied. The results indicate that the concentration of cadmium in the treated wastewater is below 0.1 mg/L when CaO,NaOH/Na2CO3 are simultaneously used as precipitants,the wastewater can be discharged with corresponding national standard.
出处
《湿法冶金》
CAS
北大核心
2016年第5期444-446,共3页
Hydrometallurgy of China
关键词
沉淀法
含镉废水
复合沉淀剂
Cd2+
去除
precipitation
wastewater containing Cd^2＋
complex precipitant
Cd^2＋
removal
