Reactor configuration | HRT (h) | Carbon source | Influent NO3−-N (mg L− 1) | Influent C/N (g C g− 1 N) | NO3−-N loading rate (mg L− 1 d− 1) | NO3−-N removal efficiency (%) | Reference |
---|---|---|---|---|---|---|---|
USB | 3 | Sodium acetate | 40 | 2–3 | 320 | 99 ± 1 | This study |
Batch denitrification experiment | 12 | Acetic acid | 50 | 1.9 | 100 | 97–99 | [30] |
Batch denitrification experiment | 24 | Sodium acetate | 5 | 3–5 | 5 | > 99 | [5] |
Batch biofilm reactor | 24 | Sodium acetate with rice straw/rice husk | 4 | 1.1 | 4 | 82 | [31] |
Upflow packed bed column | 9 | Acetic acid | 100 | 1.5 | 267 | > 99 | [16] |
USB | 3 | Raw sewage | 32.9 ± 11.0 | 1.4 | 360 ± 90 | 35 | [11] |