Table 8.
Analytical report of cationized dye bath discharge water (dark shade).
| Stage | pH | TDS (mg/l) | EC (μs/cm) | DO (mg/l) | COD (mg/l) | BOD (mg/l) |
|---|---|---|---|---|---|---|
| Bleaching | 10.2 | 2010 | 4010 | 6.24 | 596 | 240 |
| Dye bath | 10.9 | 3650 | 6300 | 6.89 | 1186 | 480 |
| Bath drain | 9.4 | 1940 | 3140 | 7.65 | 923 | 320 |
| Hot wash | 8.23 | 1060 | 1120 | 6.39 | 527 | 230 |
| After soaping | 7.3 | 540 | 490 | 6.90 | 319 | 140 |