Table 1 Domestic effluents against wastewater discharge standards
Year | EC (µS/cm) | pH (pH units) | TSS (mg/l) | TP (mg/l) | TN (mg/l) | BOD (mg/l) | COD (mg/l) |
|---|---|---|---|---|---|---|---|
2014 | 884 | 8.0–10.0 |  | 3.16 |  | 35 | 231 |
2015 | 612 | 7.1–9.2 | 75 |  |  | 12 | 144 |
2016 | 1039 | 6.8–9.4 | 136 | 3.6 |  | 187 | 1438 |
2017 | 837 | 6.8–8.6 | 210 |  |  | 18 | 152 |
2018 | 1098 | 6.9–9.1 |  |  | 75.7 | 7 | 264 |
2020 |  | 6.8–9.9 |  |  |  | 69 | 156 |
2021 | 1059 | 5.3–11.0 | 309 | 7.9 | 52.8 | 26 | 366 |
Effluent Standard | 750 | 5.0–8.5 | 50 | 5 | 10 | 50 | 70 |