Table 2.
Effluent characteristics and contaminants removal under different operation conditions.
| Effluent | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| COD (mg/L) |
NH4
+-N (mg/L) |
NO2
−-N (mg/L) |
NO3
−-N (mg/L) |
PO4
3−-P (mg/L) |
CODa
(%) |
NH4 +-Nb (%) | PO4
3−-Pc
(%) |
||
| OLR (g/L·d) | 2 | 56.0 ± 5.2 | 4.4 ± 0.3 | 13.3 ± 0.2 | — | 8.0 ± 0.4 | 89.2 | 89.3 | 52.5 |
| 4 | 73.8 ± 6.9 | 4.4 ± 0.3 | 3.1 ± 0.2 | — | 3.3 ± 0.3 | 89.4 | 90.5 | 80.7 | |
| 8 | 107.8 ± 8.9 | 7.6 ± 0.4 | 3.5 ± 0.1 | 0.5 ± 0.3 | 4.1 ± 0.4 | 90.5 | 81.3 | 75.9 | |
| 16 | 120.0 ± 10.3 | 9.2 ± 0.4 | 4.2 ± 0.2 | — | 5.2 ± 0.3 | 94.4 | 77.0 | 68.9 | |
|
| |||||||||
| C/N | 100 : 5 | 63.0 ± 6.4 | 10.1 ± 0.3 | 1.8 ± 0.1 | 3.3 ± 0.1 | 4.7 ± 0.2 | 87.9 | 62.4 | 71.3 |
| 100 : 10 | 58.0 ± 6.1 | 3.7 ± 0.2 | 1.9 ± 0.1 | 3.1 ± 0.1 | 4.5 ± 0.2 | 88.2 | 89.1 | 72.7 | |
| 100 : 20 | 57.5 ± 6.5 | 7.7 ± 0.3 | 2.9 ± 0.1 | 7.5 ± 0.5 | 5.8 ± 0.3 | 89.6 | 77.4 | 64.6 | |
a: COD removal; b: NH4 +-N removal; c: PO4 3−-P removal; —: not detected.