Mineralization and biodegradability improvement of textile wastewater using persulfate/dithionite process

The present study evaluates the color wastewater treatment in the textile industry by the persulfate/ dithionite (PS/DTN) process. This study was performed on a laboratory scale in a reactor with a batch system. The wastewater was taken from the textile industry, and the efficiency of the PS/DTN process in the treatment and removal of COD of this wastewater was optimized by the operational parameters of pH, PS, DTN, and reaction time. Optimal values of these parameters were obtained at pH = 3, PS = DTN = 1.5 g/L, and reaction time = 90 min. Although in optimal condition, the removal efficiency of COD and TOC reached 64.9 and 54.5