Purification of textile wastewater effluents by a combined Fenton process and ion exchange

Treatment of wastewater effluent from the secondary wastewater treatment plant of a dyeing and finishing mill is investigated for possible reuse. The treatment system employed consists of the Fenton process, chemical coagulation and ion exchange. The Fenton process and chemical coagulation are intended primarily to remove color, turbidity (NTU) and COD concentration of wastewater effluent while ion exchange is used to further lower the COD and Fe ion concentrations, total hardness, conductivity, alkalinity, SS and TDS of wastewater. Experimental results throughout the present study have indicated that the combined chemical treatment methods are very effective and are capable of elevating water quality of the treated wastewater effluent to the reuse standard of the textile industry.