Research on Processing Reactive Dye Wastewater by Fenton Oxidizing

Aiming at the problem of decolorizing dyeing wastewater,orthogonal experiments were carried out to determine the optimum conditions of decolorizing and COD removal of three kinds of monomer simulated active dyeing wastewater(active dye red,blue and black) and the actual factory dyeing wastewater.The results showed that the chromaticity removal rate of Fenton oxidation exceeds 90%,the optimum operating conditions were:the initial pH of wastewater is pH=4,the additive amount of H2O2 is 400 mg/L,and the reaction time is 30 min.Under optimum conditions,the COD of actual dyeing wastewater was removed efficiently with the removal rate of 91.88%.