Fenton试剂去除选矿废水中黄药的试验研究

Experimental Study on Removal of Xanthate in Flotation Wastewater by Fenton Reagent

选矿废水由于含有残留选矿药剂易造成环境污染.论文用Fenton试剂处理含黄药模拟废水和实际选矿废水,考查了pH值、H2O2和Fe2+浓度对黄药去除率的影响.结果表明:Fenton试剂处理120mg/L的模拟黄药废水,在H2O2质量浓度20mg/L、Fe2+质量浓度12mg/L、废水初始pH为4条件下,黄药的去除率达到96.8%;处理150mg/L的实际废水,当pH为3,H2O2质量浓度24mg/L,Fe2+质量浓度18mg/L时,黄药的去除率达到97.6%,废水可达标排放.

Floatati on wastewater is easy to cause environment pollution due to its containing remnant floatation medicament. The treatment of Xanthate in artificial and actual mineral processing wastewater by Fenton reagent is studied in terms of the effects of pH value, H2O2 and Fe^2＋ concentration on the removal eficiency of xanthate. The results show that for the Xanthate simulated wastewater, when the xanthate concentration is 120 mg/L, H2O2 concentration is 20 mg/L, Fe^2＋ concentration isl 2 mg/L, and initial pH of wastewater reaches 4, the removal of xanthate rate attains up to 96.8% ; and for actual mineral wastewater processing, when the pH is 3, H2O2 concentration is 24 mg/L, and Fe^2＋ concentration is 18 mg/L, the Xanthate removal rate achieves 97.6 %, which reaches the standard for wastewater discharge.