氧化还原法处理冶金综合电镀废水

本文介绍了氧化还原法处理含氰含铬电镀废水的研究.在碱性条件下,先用氧化剂完全氧化氰根后,再用还原剂还原六价铬为三价铬,同时沉淀所有重金属离子.试验证明两种废水混合处理后各项指标均优于国家标准,工艺流程及设备比单独处理简单.

Treatment of metallurgical comprehensive electroplating wastewater with oxidation-reduction method

The research of treatment of electroplating wastewater containing chromium and cyanide with oxidation -reduction method was introduced in this article.Under alkaline condition,after fully oxidization of cyanide with oxidant,the reduction of chromium from Cr~(6+) to Cr~(3+) was performed with the reducing agent.Meanwhile,all of the heavy metal ions were precipitated.The test results showed that after mixed treatment,the indexes of two kinds of wastewater are higher than national standard,and the process flow...