Fenton试剂处理选矿废水的试验研究

研究用Fenton试剂处理含苯胺黑药(二苯胺基二硫代磷酸)模拟废水和实际选矿废水,分别考查了反应初始pH值、Fe2+浓度及H2O2用量对COD去除率的影响。结果表明:氧化时间为10 min,反应初始pH值为4,ρ(Fe2+)=1.83 g/L,ρ(H2O2)=5.55 g/L,模拟废水苯胺黑药的质量浓度为300 mg/L时,COD去除率达到83.6%;对于实际废水,当ρ(Fe2+)=50mg/L,pH值=3.5,ρ(H2O2)=1800mg/L时,出水ρ(COD)从1000mg/L降到32 mg/L,COD去除率为96.8%,达到废水排放标准,药剂成本估计为每处理1 m3废水需要费用18元。

Experimental study on treatment of beneficiation wastewater by Fenton reagent

The treatment of aniline aerofloat in artificial and actual beneficiation wastewater by Fenton reagent was investigated.The effects of initial pH value,concentration of Fe~(2+),and H_2O_2 dosage on the removal efficiency of COD were studied respectively.The results indicated that,when reactive time was 10?min,pH=4,ρ(Fe~(2+))=1.83?g/L,(ρ(H_2O_2)=5.55?g/L,) and the initial concentration of aniline aerofloat was 300?mg/L,the removal rate of COD in artificial wastewater could reach 83.6%.As to actual beneficiation wastewater,when ρ(Fe~(2+))=50?mg/L,pH=3.5,and ρ(H_2O_2)=1?800?mg/L,ρ(COD) decreased from 1?000?mg/L to 32?mg/L,and the removal rate of COD was about 96.8%,reaching the standard for wastewater discharge.The dosage cost was about 18?yuan for 1?m~3 wastewater.