Table 2 Characteristics of ORW.
Characteristics | Untreated value | Treated value | Efficiency (%) | |
|---|---|---|---|---|
pHa | ORW | 7.47 | 6.74 | – |
Total COD (TCOD)b | ORW | 46,125.65 | 821.22 | 98.21 |
Total BOD (TBOD)b | ORW | 16,543.13 | 498.43 | 97.82 |
Total dissolved solids (TDS)b | ORW | 9761.87 | 723.11 | 92.59 |
Total suspended solids (TSS)b | ORW | 5643.21 | 422.12 | 92.51 |
Volatile suspended solids (VSS)b | ORW | 4965.22 | 1121.65 | 77.40 |
Total kjeldahl nitrogen (TKN)b | ORW | 3765.33 | 913.44 | 75.74 |
SO42−b | ORW | 2187.54 | 543.29 | 75.16 |
PO43−-Pb | ORW | 1.9987 | 0.9821 | 50.86 |
Cl−b | ORW | 14.76 | 7.23 | 51.01 |
