| Source of effluent generation |
Parameters |
| pH |
COD (mg/L) |
BOD (mg/L) |
| Process Effluent |
|
|
|
| Desizing |
5.83-6.50 |
10000-15000 |
1700-5200 |
| Scouring |
10-13 |
1200-3300 |
260-400 |
| Bleaching |
8.5-9.6 |
150-500 |
50-100 |
| Mercerizing |
8-10 |
100-200 |
20-50 |
| Dyeing |
7-10 |
1000-3000 |
400-1200 |
| Wash Effluent |
|
|
|
| After beaching |
8-9 |
50-100 |
10-20 |
| After acid rinsing |
6.5-7.6 |
120-250 |
25-50 |
| After dyeing (hot wash) |
7.5-8.5 |
300-500 |
100-200 |
| After dyeing (acid & soap wash) |
7.5-8.64 |
50-100 |
25-50 |
| After dyeing (final wash) |
7-7.8 |
25-50 |
|
| Printing washing |
8-9 |
250-450 |
115-150 |
| Blanket washing of rotary printer |
7-8 |
100-150 |
25-50 |
|
