Fenton试剂对铁锰矿井废水处理的实验研究

Experiment on treating Iron and manganese mine wastewater by Fenton reagent

使用Fenton试剂对铁锰矿井水进行处理试验,论述了反应温度、H2O2的投加量、pH、反应时间对Fenton试剂处理矿井水的影响,讨论了Fenton试剂处理酸性矿井废水的机理。结果表明:芬顿试剂对铁锰矿井水中锰的去除效率很高,矿井水中的Fe2+能与H2O2形成Fenton试剂后产生的具有强氧化性的.OH能有效处理矿井水中的Mn2+。对于原水Mn2+的初始浓度为2 mg/L,Fe2+的初始浓度为250 mg/L,pH为5,当控制反应温度为25℃,H2O2的投加量为8 mmol/L,调节pH值为4.5,反应时间为10 m in,Mn2+去除效率可以达到78.1%以上。

Fenton Reagent can be used to treat the iron and manganese mine waste water.The paper investigated effects of reaction temperature,H2O2 dosage,pH,reaction time on Fenton reagent treatment of mine water and discussed the treatment mechanism of Fenton reagent to the acid mine wastewater.The result indicated： The elimination efficiency of manganese from the iron and manganese mine water was very high by the Fenton reagent,Fe2＋ with H2O2 generated by Fenton reagent with strong oxidation of ·OH could effectively treat Mn2＋ in the mine water.The Mn2＋ initial density was 2mg/L,the Fe2＋ initial density was 250mg/L,the reaction temperature was 25℃,the increment of H2O2 was 8mmol/L,pH value was 4.5,the reaction time was 10 minutes,the Mn2＋ elimination efficiency may achieve above 78.1%.