| Process |
pH |
SEV (l/kg) |
BOD |
COD |
TSS |
TDS |
Oil&Gas |
pH |
| kg per 1000 kg of product |
| Desizing |
|
|
|
|
|
|
|
|
| Enzyme starch |
6-8 |
2.5-9 |
45.5 |
91 |
89 |
5 |
5 |
6-8 |
| Acid starch |
6-8 |
|
45.5 |
91 |
89.5 |
7.5 |
5 |
6-8 |
| Polyvinyl alcohol (PVA) |
6-8 |
|
2.5 |
5 |
5 |
48 |
2.5 |
6-8 |
| Carboxymethyl cellulose (CMC) |
6-8 |
|
4 |
8 |
5 |
45 |
9.5 |
6-8 |
| Scouring |
|
|
|
|
|
|
|
|
| Unmercerised greige fabric |
12.5 |
2.5-43 |
21.5 |
64.5 |
5 |
50 |
40 |
12.5 |
| Mercerised greige fabric |
12.5 |
|
16.5 |
49.5 |
5 |
50 |
30 |
12.5 |
| Mercerising |
|
|
|
|
|
|
|
|
| Greige fabric |
12 |
231-306 |
13 |
39 |
5 |
148 |
10 |
12 |
| Scoured fabric |
12 |
|
4 |
12 |
5 |
148 |
- |
12 |
| Bleached fabric |
12 |
|
2 |
6 |
5 |
148 |
- |
12 |
| Bleaching |
|
|
|
|
|
|
|
|
| Hydrogen peroxide |
9-12 |
2.5-124 |
0.5 |
2 |
4 |
22 |
- |
9-12 |
| Sodium hypochlorite |
9-12 |
|
1 |
4 |
4 |
5 |
- |
9-12 |
| Dyeing |
|
|
|
|
|
|
|
|
| Fibre reactive HE dyes (woven) |
12 |
|
6 |
24 |
- |
180 |
|
12 |
| Basic |
6-7.5 |
149-300 |
|
|
|
|
|
6-7.5 |
| Direct |
6.5-7.6 |
14-53 |
|
|
|
|
|
6.5-7.6 |
| Vats |
5-10 |
8.3-166 |
|
|
|
|
|
5-10 |
| Sulphur |
8-10 |
24-212 |
|
|
|
|
|
8-10 |
SEV - Specific Effluent Volume |
