Fenton试剂对染料废水的降解脱色作用研究

Research on Treating Dye Wastewater by Fenton Reagent

为了进一步探讨Fenton法对某些难降解有机物的降解效果,研究影响降解的诸多因素,以甲基橙模拟染料废水为研究对象,以色度和COD去除率为检测指标,研究了Fenton反应中pH值、H2O2浓度、Fe2+离子浓度、反应时间、温度对甲基橙模拟染料废水脱色率及COD去除率的影响规律。结果表明:Fenton试剂可有效地去除甲基橙模拟染料废水中的色度和COD。染料浓度为200mg/L时,在pH=4、20℃、H2O(2浓度为30%)投量为0.6mL/L、硫酸亚铁投量为200mg/L时,反应60min,甲基橙模拟染料废水的色度去除率可以达到99.66%,COD的去除率可达88%。

In order to research the degradation efficiency of Fenton method on some non-biodegradable organic pollutant and the factors that affect the degradation process, the effects of pH,dosages of H2O2 and FeSO4, reaction time,temperature on decolouration efficiency and COD removal efficiency of the dyes wastewater simulated by methyl orange solution were studied. The results showed that Fentun reagent could remove the color and COD of this dye wastewater effectively with color and COD removals of 99.66 % and 88% respectively when the concentration of dye was 200 mg/L, pH=4,temperature was 20℃,the dosages of H2O2 and FeSO4 ·7H2O were 0.6 ml/L and 200mg/L,and reaction time was 60min .