实验采用二氧化氯 ( Cl O2 )作为矿山含氰废水处理剂 ,含氰废水在 p H 8.5～ 11.5之间 ,Cl O2 /CN- ≥ 3 (质量比 )的条件下 ,搅拌反应 3 0 min后 ,氰化物去除率达 99%以上 ,p H<9,CN- <0 .5 mg/L,达到《污水综合排放标准》中的一级标准。实验表明 ,利用 Cl O2 的强氧化性处理矿山含氰废水 ,具有投药量少、使用便捷、无二次污染等优点 ,且处理效果明显优于传统次氯酸盐处理法。 Chlorine dioxide (Cl O2) was used as the treatment agent for cyanide-containing wastewater in mines. The cyanide-containing wastewater was stirred for 30 min at pH 8.5 to 11.5 and Cl O2 / CN- 3 (mass ratio) , Cyanide removal rate of more than 99%, p H <9, CN- <0.5 mg / L, to “Integrated Wastewater Discharge Standard” in a standard. Experiments show that the use of Cl O2 strong oxidizing mine cyanide wastewater treatment, with a small dosage, easy to use, no secondary pollution, etc., and the treatment effect is significantly better than the traditional hypochlorite treatment.