Fenton试剂对含锰矿井废水处理实验

Experimental study on treatment of mine water containing manganese using Fenton reagent

为了解决矿井水中锰去除难度较大的问题,使用Fenton试剂对含锰矿井水进行处理。考察了H2O2:Fe2+、反应温度、H2O2的投加量、pH、反应时间对Fenton试剂氧化除锰的影响,并讨论了Fenton试剂高级氧化除锰的机理。研究结果表明:Fenton试剂对含锰矿井水的处理效果很好,原水中Mn2+的初始浓度为2 mg/L,当H2O2:Fe2+摩尔比为3:1,反应温度为25°C,H2O2的投加量为8 mmol/L,pH值为5,反应时间为10 min的时候,Mn2+的去除效率可以达到84%。Fenton试剂生成的具有强氧化性的.OH能有效处理矿井水中的Mn2+。

In order to overcome the difficulty in removing manganese from mine water,Fenton reagent was used to treat manganese mine water.In this study,the investigations were focused on observing the effects of H2O2：Fe2＋,reaction temperature,H2O2 dosage,pH,reaction time on the treatment of mine water containing manganese using Fenton reagent.In addition,the study investigated the advanced oxidation mechanism of removing manganese using Fenton reagent treatment.The results show that the treatment using Fenton achieves a very good effect.The initial concentration of Mn2＋ is 2mg/L.When H2O2：Fe2＋ molar ratio is 3：1,the reaction temperature is 25°C,H2O2 dosage is 8mmol/L,pH value is 5,and the reaction time is 10min,the Mn2＋ removal efficiency can reach 84%.Fe2＋ with H2O2 generated by Fenton reagent with strong oxidation of ？OH can effectively remove Mn2 ＋ from mine water.