| pH | EC (mS/cm) | Disolved oxygen (mg/L) | COD (mg/L) | BOD5 (mg/L) | PO4 (mg/L) | Nitrates (mg/L) | Kjeldahl Nitrogen (mg/L) |
Raw sludge | 8.03 | 3.32 | 0.81 | 952 | 441 | 98 | 23 | 739 |
LPA | 7.74 | 3.23 | 2.92 | 324 | 89 | 36 | 196 | 15 |
LPN | 7.70 | 2.93 | 3.08 | 283 | 63 | 25 | 252 | 21 |
LT | 7.56 | 2.83 | 2.81 | 355 | 82 | 23 | 290 | 11 |