Study of Fenton Oxidation Process on Dyeing Wastewater and Improving its Catalysis

The aim of this study was to find optimum dose of ferrous sulphate and hydrogen peroxide in Fenton oxidation process for treatment of dyeing wastewater. Fenton process is the advanced oxidation method used mainly for COD and colour removal. Experiments are done on synthetic wastewater prepared from three different dyes; acidic, disperse and reactive; and also effluent obtained from industry. The maximum removal of effluent COD was obtained more than 95% in Fenton treatment. In the second part of the study is find alterations to improve the Fenton treatment and the study the sludge generation and colour of wastewater after treatment. Experiments are done on synthetic wastewater prepared from four different dyes; acidic, disperse, reactive and azo dye; and also effluent obtained from industry. Ferric chloride and ferric nitrate showed better efficiency than conventional method of using ferrous sulphate as catalyst in treatment. The sludge generated was found to be in par with the COD removed during treatment. Fenton treatment was found to give its own colour to wastewater.