阴极负载活性炭纤维电解法处理染料废水实验研究

Treatment of Dye Wastewater by Cathode Load Activated Carbon Fiber

以阴极负载活性炭纤维电解法降解甲基橙染料废水,并对比了电解法和生物膜电极法对甲基橙染料废水的处理效果,讨论了处理时间、初始浓度及电压对甲基橙染料废水脱色率的影响。结果表明:甲基橙染料废水的脱色率随处理时间的延长先增大后趋于平衡,阴极负载活性炭纤维电解法最先达到平衡且处理1 d脱色率可达90%以上,生物膜电极法在处理3 d达到平衡,电解法在处理4 d达到平衡;生物膜电极法处理时,甲基橙染料废水的脱色率随初始浓度先增大后减小,最佳初始浓度为200 mg/L,电解法处理时,脱色率先减小后增大后减小,最佳初始浓度为20 mg/L,阴极负载活性炭纤维电解法处理时,脱色率先增大后减小,最佳初始浓度为60 mg/L;最佳电压均为1.5 V。生物膜电极法和阴极负载活性炭纤维电解法处理甲基橙染料废水的效果优于电解法。

The methyl orange dye wastewater was degraded by cathode-loaded activated carbon fiber electrolysis.The treatment effects of electrolysis and biofilm electrodes on methyl orange dye wastewater were compared.The effects of treatment time,initial concentration,and voltage on the decolorization rate of methyl orange dye wastewater were discussed.The results showed that the decolorization rate of methyl orange dye wastewater increased first and then tended to balance with the extension of treatment time.The cathode-loaded activated carbon fiber electrolysis method reached the balance first and the decolorization rate reached more than 90%after one day of treatment.The biofilm electrode method reached the balance after three days of treatment,and the electrolysis method reached the balance after four days of treatment.In biofilm electrode treatment,the decolorization rate of methyl orange dye wastewater first increased and then decreased with the initial concentration,and the optimal initial concentration was 200mg/L.In electrolysis treatment,the decolorization rate first decreased followed by an increase and then a decrease,and the optimal initial concentration was 20 mg/L.In cathode-loaded activated carbon fiber electrolysis treatment,the decolorization rate first increased and then decreased,and the optimal initial concentration was 60 mg/L.The optimum voltages of both treatment methods are 1.5 V.The treatment effects of the biofilm electrode method and cathode-loaded activated carbon fiber electrolysis method for methyl orange dye wastewater were better than those of the electrolysis method.