Abstract:
Textile Industry consumes considerable amount of water for dyeing, finishing, and sizing. The wastewater from the manufacturing facility is high in color (10000-15000 Pt Co), COD (2000-5000 mg/L), TDS (7000 — 9000 mg/L), and TSS (1000-2000 mg/L). Management of wastewater from the facility was the subject of this study. Intensive treatability studies involving physico-chemical and biological treatment was performed. Coagulation and flocculation followed by sedimentation using magnesium sulfate, ferric chloride, and polyelectrolyte resulted in 65 - 70 % reduction in suspended solids and colloids. Upflow anaerobic sludge blanket reactor followed by fluidized media reactor was applied after physico-chemical treatment for reduction of organics and color. The study implied that about 94% color, 90% COD, and 98% TSS reduction is possible. A final process design as well as economic study based on the laboratory findings has been carried out.
