超声波／Fenton试剂法联用技术处理染料废水的研究

Study on dye wastewater treatment by ultrasonic and fenton reagent

通过正交试验确定了超声波条件下Fenton试剂对3种染料废水的最佳处理条件,结果表明:对还原金黄染料废水的最佳处理条件是pH值3,[Fe2+]=1.5 mmol/L,[H2O2]=240 mg/L,温度30℃,其色度去除率为98.56%,浊度去除率为99.79%,COD去除率为91.00%;对直接黑染料废水的最佳条件是pH值3,[Fe2+]=1.5 mmol/L,[H2O2]=300 mg/L,温度40℃,其色度去除率为98.41%,浊度去除率为99.42%,COD去除率为89.14%;对还原大紫染料废水的最佳处理条件是pH值5,[Fe2+]=1.5 mmol/L,[H2O2]=240 mg/L,温度40℃,其色度去除率为97.26%,浊度去除率为99.74%,COD去除率为93.07%。

The best condition of treatment of three kinds of dye wastewater had been confirmed through orthogonal experiment by fenton reagent with ultrasonic. The results showed the best condition were： for reverting golden dye wastewater, pH value was 1, [Fe^2＋ ] value was 1.5 mmol/L, [H2O2 ] value was 240 mg/L, and the temperature was 30 ℃, its removal rates of chroma, turbidity and COD were 98.56%, 99.79% and 91.00% respectively; for direct black dye wastewater, the pH value was 3, [ Fe^2＋ ] value was 1.5 mmol/L, [H2O2]value was 300 mg/L, and the temperature was 40 ℃, the removal rates of chroma, turbidity and COD were 98.41%, 99.42% and 89.14% respectively; for reverting greatly purple dye wastewater, the pH value was 5, [ Fe^2＋] value was 1.5 mmol/L, [ H2O2 ] value was 240 mg/L, and the temperature was 40 ℃, its removal rates of chroma, turbidity and COD were 97.26%, 99.74 % and 93.07 % respectively.