Table 3.
The main physico-chemical and bacteriological wastewater results analysis after the two studied wastewater treatment procedures (activated sludge procedure and UV-C254 irradiation)
| Parameters | RW | OST | NT 106-02 | P1 (%) | UVP2 | P2 (%) |
|---|---|---|---|---|---|---|
| SS (mg/L) | 207 | 17.3 | 30 | 92 | - | - |
| COD (mg O2/L) | 576 | 76.7 | 90 | 90 | - | - |
| BOD5 (mg O2/L) | 330 | 17.7 | 30 | 95 | - | - |
| FC MPN/100 mL | 8.4 104 | 16 103 | 2 103 | 88 | 0.3 | 99.9 |
| FS MPN/100 mL | 5 104 | 6 103 | 103 | 98 | 0.3 | 99.9 |
| E. coli MPN/100 mL | 17.2 104 | 7 104 | - | 96 | 0.3 | 99.9 |
| RVA gc/L | 5.8 109 | 5.1 108 | - | 85 | 1.4 108 | 73 |
RS raw sewage, OST out secondary treatment, UVP2 second passage by UV-C254, P1 performance of treatment between RW and OST, P2 performance of treatment between OST and UVP2, SS suspended solids, COD chemical oxygen demand, BOD5 biological oxygen demand, FC fecal coliforms, EC Escherichia coli, FS fecal streptococci, RVA Rotavirus A, gc/L genome copies per liter