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 |