Table 3.
Concentrations of influent and effluent wastewater and removal efficiency in the two PSBRs (mean ± standard deviation).
| Parameter | Influent concentration (mg/L) | PSBR1 |
PSBR2 |
||
|---|---|---|---|---|---|
| Effluent concentration (mg/L) | Removal efficiency (%) | Effluent concentration (mg/L) | Removal efficiency (%) | ||
| tCOD | 301 ± 96 | 99 ± 6 | 66 ± 15 | 41 ± 9 | 85 ± 6 |
| ηCOD | - | - | 89 ± 4 | - | 91 ± 4 |
| TKN | 63 ± 19 | 7 ± 4 | 88 ± 8 | 2 ± 1 | 97 ± 2 |
| NH4+-N | 54.4 ± 12.3 | 1.9 ± 4.1 | 96 ± 7 | 0.6 ± 1.1 | 99 ± 2 |
| NO2--N | 0.1 ± 0.1 | 0.3 ± 0.7 | - | 0.1 ± 0.1 | - |
| NO3--N | 1.1 ± 0.3 | 24.4 ± 8.2 | - | 18.0 ± 7.7 | - |
| Total N | 63 ± 18 | 31 ± 9 | 50 ± 14 | 20 ± 8 | 69 ± 10 |
| Total P | 5.3 ± 1.7 | 3.7 ± 1.9 | 36 ± 28 | 2.6 ± 0.8 | 40 ± 20 |
| TSS | 249 ± 80 | 59 ± 58 | 76 ± 18 | 14 ± 18 | 94 ± 8 |