Effect on Particle Size of Agro based Coagulant for Treatment of Textile Mill Effluent

An experimental investigation was carried out for the feasible use of agro based coagulants of different particle size to the treatment of textile mill effluent. Coagulation-flocculation and sedimentation process were applied for the treatment of textile mill effluents using crude water extracts of dry Moringaoleifera (MO), Tamarinaindica (TI) and Strychonomous Potatorum (SP) as primary agro based coagulant. The experiments were conducted at assorted particle sizes of 90 μ, 150 μ, 300 μ, 425 μ, 600 μ and850 μ of the coagulant powders of Moringaoleifera, TamarinaIndica and Strychonomous Potatorum using jar-test experiment. The pre and post treatment of textile mill effluent with agro based coagulant of different particle size and the removal efficiency of turbidity, TDS, TSS, BOD and COD of textile mill effluent were evaluated and compared with conventional coagulant Alum (AL). The surface characteristics of M. oleifera, T. indica, S. potatorum and textile mill effluent residues of pre and post treatment were analyzed with Scanning Electron Microscope (SEM). The outcome of this paper reveals that300 μ particle sizes of Moringaoleifera were efficient in removing turbidity, TDS, TSS, BOD and COD of textile effluent at different dosages of coagulants. Consequently natural coagulant of different particle sizes gives better removal efficiencies when compared with the conventional coagulant Alum.