组合Fenton法处理弹药销毁废水

Treatment of ammunition disposal wastewater by combined Fenton process

采用Fenton氧化-活性炭吸附的组合工艺处理兰州军区某弹药试验站弹药销毁废水,通过现场的中试试验,系统考察了4个主要影响因子:H2O2浓度、Fe2+浓度、pH值及反应时间在Fenton氧化中对弹药销毁废水处理效率的影响,分析了各影响因子的作用机制,并确定了它们的最佳运行参数,即H2O2的浓度为0.1 mol/L,Fe2+的浓度为1.8 mmol/L,pH值为3.5,反应时间为8 h。结果表明这些因子对弹药销毁废水的处理效率均有较大影响,应严格控制。经组合Fenton法处理后,TNT、COD的质量浓度分别小于1、60 mg/L,色度小于5倍,达到了GB14470.3-2002标准中规定的污染物排放标准。

Fenton oxidation-activated carbon adsorption combination process was usea for me treatment of ammunition disposal wastewater in a Lanzhou Corps District ammunition experiment station. Through the field pilot scale experiment, the effects of four major factors： mass concentration of H2O2 and Fe^2＋, pH value, reaction time on the efficiency of ammunitions disposal wastewater treatment was investigated systematically, the mechanism of the influencing factors were analyzed, so that, the optimal operation parameter was confirmed as following： mass concentration of H2O2 and Fe^2＋ were 0.1 and 1.8 mol/L respectively, pH value was 3.5, reaction time was 8 h. The results showed that, these factors played a significant role on treatment efficiency and should be controlled strictly. After the treatment of combined Fenton process, the mass concentration of TNT and COD were below 1, 60 mg/L respectively, the chromaticness was below 5 times, which achieved discharge standard of pollutants（GB 14470.3-2002）.