COLOR AND COD REMOVAL FROM ORGANIZED INDUSTRIAL DISTRICT (OID) WASTEWATER BY FENTON PROCESS

摘要

In this study, the Fenton process color and COD removal efficiencies from effluent wastewater samples of organised industrial districts (OID), mostly textile industries or wastewater treatment plants, were investigated at different pHs (3, 4 and 5), Fe~(2+)/H_2O_2 molar ratios and concentrations. The best experimental results of color and COD removal were observed at pH 4 and 1/5 molar ratio of Fe~(2+)/ H_2O_2. At optimum Fe~(2+)/H_2O_2 ratio, different concentration ratios, even lower ones (80/50 mg/L; limits given by EN ISO 7887) were provided, and 50% COD removal could be obtained.