PERFORMANCE COMPARISON OF UV, UV/H2O2 , UV/Fe2+, H2O2 /Fe2+, UV/H2O2 /Fe2+ PROCESSES IN THE REMOVAL OF COD AND COLOR FROM TEXTILE WASTEWATER

Abstract

In this study, the removal of chemical oxygen demand (COD) and color from textile industrywastewater were investigated in comparison with UV, UV/H2O2, UV/Fe2+, H2O2/Fe2+, UV/H2O2/Fe2+processes. Initial pH, hydrogen peroxide dosage, ferrous iron dosage, and UV radiation were selectedas variables. A maximum of 95.65% COD and 98.52% color removal were achieved by the photoFenton method. Another effective method was Fenton process by which 83.76% COD and 80.44%color removal efficiencies were obtained. It was concluded that the Fe2+/H2O2 process (Fenton) withUV light (photo-Fenton) can provide higher removal efficiencies in shorter process times in thetreatment of textile wastewater.