Treatability Studies of Textile Wastewater

Management of wastewater from a textile mill was the subject of this study. Intensive treatability studies were performed. Coagulation-Sedimentation using lime, ferrous sulphate, or lime-ferrous sulphate combination was carried out. The use of lime-ferrous sulphate reduced the organic load considerably. As an alternative, biological treatment of industrial wastewater combined with equal proportions of domestic sewage using complete mixing activated sludge process produced a very high quality effluent suitable for disposal into surface water. A final process design was developed based on the laboratory finding. Economic study on the methods adopted for the treatment of this wastewater indicated that the cost of chemical treatment is far less than the cost of biological treatment.