Characteristics of raw POME and DOE standard discharge limits.
Parameters | Average value | DOE discharge limit (Malaysia) |
---|---|---|
Temperature (°C) | 85 | 45 |
pH | 4.2 | 5–9 |
Biochemical oxygen demand, BOD (mg L−1) | 25 000 | 100 |
Chemical oxygen demand, COD (mg L−1) | 51 000 | — |
Oil & grease, O&G (mg L−1) | 6000 | 50 |
Total solids, TS (mg L−1) | 40 000 | 1500 |
Total suspended solids, TSS (mg L−1) | 18 000 | 400 |
Total volatile solids, TVS (mg L−1) | 34 000 | — |
Total nitrogen (mg L−1) | 750 | 200 |
Colour (ADMI) | >500 | 200 |