Comparison of the reactor performances between A/O and O/EI using APG-induced fermentation liquid during the stable operationa.
| Item | A/O reactor | O/EI reactor |
|---|---|---|
| Effluent pH | 7.8 ± 0.1 | 8.1 ± 0.2 |
| COD removal efficiency/% | 93.8 | 94.1 |
| Effluent SOP/mg L−1 | 1.8 ± 0.2 | 0.89 ± 0.08 |
| SOP removal efficiency/% | 82 ± 4 | 91 ± 5 |
| Effluent NH4+-N/mg L−1 | 2.84 ± 0.12 | 2.79 ± 0.1 |
| Effluent NO2−-N/mg L−1 | 0.13 ± 0.03 | 0.15 ± 0.04 |
| Effluent NO3−-N/mg L−1 | 13.52 ± 0.61 | 12.85 ± 0.56 |
a
Results are the averages and their standard deviations.