S.No. Parameters Initial 1. Colour Dark brown 2. pH 8.2 3. Temperature 38 4. Free CO2 Nil 5. Carbonate 60 6. Bicarbonate 180 7. BOD 280 8. COD 496 9. DO 1.67 10. Nitrate 158 11. Nitrite 74 12. Ammonia 78 13. Total phosphorus 48 14. Inorganic phosphate 20 15. Organic phosphate 30 16. Calcium 67.28 17. Magnesium 54.34 18. Chloride 4699 Except pH, all the values are expressed in mg l-1.

Table 1: Initial physico-chemical characteristics of dye effluent.