Textile wastewater treatment efficiency by Fenton oxidation with integration of membrane separation system

This work investigates the performance of an integrated Fenton-Ultrafiltration treatment scheme to treat textile wastewater. The treated effluent is particle-free at a quality higher than that obtained by any novel membrane based process or Fenton oxidation in singularity. The study is divided into three parts: part one, Fenton process was optimized for COD: H2O2 (wt/wt), H2O2: Fe+2 (wt/wt) and pH to attain highest degradation removal and lowest sludge generation. The process efficiency was analyzed by considering COD, TOC and color removal as key parameters. Part two, the process was scaled up to 5 L and efficiency of integrated system was investigated under optimized conditions by using two different types of membranes at different operating pressures. Part three, the performance of membrane process was studied in terms of flux behavior and its recovery. The treated effluent has COD, TOC and color removal values of 48.0 mg/L, 1.2 mg/L and >99% respectively. These values are compliant to typical discharge environmental standards.