The following operations are generally adopted for treating the composite effluent of an average textile mill in the order given below: (i) Equalisation. (ii) Acid-dosing. (iii) Coagulation. (iv) Sedimentation. (v) Primary and secondary gypsum treatment. (vi) Filtration. (vii) Sedimentation. (viii) Sludge-drying. (ix) Sometimes biological treatment (i) Equalisation: Effluent streams from various wet processing sections of […]