Effluent Discharge to Central Waste Water Treatment Plant
For Factories before discharge to IEAT
Items |
Unit |
Standard values |
1. Biochemical Oxygen Demand (BOD) |
mg/l |
not more than 500 |
2. Chemical Oxygen Demand (COD) |
mg/l |
not more than 750 |
3. Suspended Solid (SS) |
mg/l |
not more than 200 |
4.Total Dissolve Solid (TDS) |
mg/l |
not more than 3000 |
5. Total Kjeldahl Nitrogen (TKN) |
mg/l |
not more than 100 |
6. pH |
- |
5.5 – 9.0 |
7. Heavy Metal | ||
- Mercury (Hg) |
mg/l |
not more than 0.005 |
- Selenium (Se) |
mg/l |
not more than 0.02 |
- Cadmium (Cd) |
mg/l |
not more than 0.03 |
- Lead (Pb) |
mg/l |
not more than 0.2 |
- Arsenic (As) |
mg/l |
not more than 0.25 |
- Chromium (Cr3+) |
mg/l |
not more than 0.75 |
- Chromium (Cr6+) |
mg/l |
not more than 0.25 |
- Barium (Ba) |
mg/l |
not more than 1.0 |
- Nickel (Ni) |
mg/l |
not more than 1.0 |
- Copper (Cu) |
mg/l |
not more than 1.0 |
- Zinc (Zn) |
mg/l |
not more than 5.0 |
- Manganese (Mn) |
mg/l |
not more than 5.0 |
- Silver (Si) |
mg/l |
not more than 1.0 |
8. Total iron |
mg/l |
not more than 10 |
9. Fluoride (F) |
mg/l |
not more than 5 |
10. Sulfide |
mg/l |
not more than 1.0 |
11. Cyanide as HCN |
mg/l |
not more than 0.2 |
12. Formaldehyde |
mg/l |
not more than 1.0 |
13. Phenols Compound |
mg/l |
not more than 1.0 |
14. Chloride asCL2 |
mg/l |
not more than 2000 |
15. Free Chlorine |
mg/l |
not more than 1.0 |
16. Pesticide |
mg/l |
not allowed |
17. Temperature |
oC |
not more than 45 |
18. Color |
- |
not appear |
19. Odor |
- |
not appear |
20. Oil & Grease |
mg/l |
10.0 |
21. Radioactive |
- |
not allowed |
22. Surfactant (Synthetic Detergent) |
mg/l |
not more than 30.0 |