电解法处理含氰镀铜废液的试验研究

Study on Electrolytic Treating of the Wasted Copper Plating bath with Cyanogen

讨论了电解法处理含氰废水的原理,利用实际含氰镀铜废液和自行设计的新型电解槽,探讨了各种因素对脱氰效果的影响。在实验的基础上用正交实验法确定了电解的最佳条件为:t=12min,I=2.5A,废水中加盐量18g/l,絮凝剂添加量100mg/l,废水从原来含氰化物25.mg/l,含铜量35.mg/l,降为含氰0.14mg/l,含铜0.42mg/l,去除率分别为99.44%和98.8%,出水达到排放标准。

To discuss the principle of electrolytic treating of cyanic waste water. Using the wasted cyanic copper-plating bath and electrolytic tank of new type designed by ourselves, to approach varieties of factors influencing upon the effect of de-cyaniding. On the basis of experiment, by orthogonal method, the optimum condition of electrolysis determined as t = 12min, I = 2. 5A. The amount of salt added into the waste water is 18 mg/l and the amount of coagulant added is 100mg/l. The amount of cyanide is from 2. 5mg/l to 0. 14mg/l and that of copper from 3. 5mg/l to 0. 42mg/l. The rate of removal is respectively 99. 44% and 98. 8%. The drainage is up to draining standard.