Table 4.
Nitrogen removal in full-scale PN/A systems.
| Influent NH4+ conc. (mg-N/L) | Influent NO2−/NH4+ | NRR (kg-N/m3-day) | NRE (%) | Effluent NO3−/NH4+ (%) | Remarks | References | |
|---|---|---|---|---|---|---|---|
| 1 | 1,000-2700a | 1.4 ± 0.6 | 0.32 | 86 ± 9 | 5 | Two-stage system consisting of SBRs | Magrí et al. (2021) |
| 2 | 750-1500b | 1.31 | 7.1 | - | 25 | Two-stage SHARON-ANAMMOX | van der Star et al. (2007) |
| 3 | 960 ± 110 | Single stage PN/A | 0.18 | 72-85c | 8-34 | 550 m3 SBR | Lackner et al. (2014b) |
| 4 | 890 ± 89 | - | >85 | 5-13d | 393 m3 MBBR | Klaus et al. (2017) | |
| 5 | 1,043 | 0.63 | 90 | 2–8 | 350 m3 | Christensson et al. (2013) | |
| 6 | 855 | 1.2 | 88 | 8–22 | 50×4 m3 | ||
| 7 | 690 | 1.7-2d | 3.0 | 80 | 3d | 415 m3 5-stage system with gel-encapsulated biomass | Isaka et al. (2017) |
| 8 | 580 ± 90 | Single stage | 1.8e | >80 | ~12f | 256 m3 full-scale PN/A MBBR | Dimitrova et al. (2020) |
a
Feed to nitritation reactor.
b
Estimated from Figure 4 in the source file.
c
Ammonium removal.
d
Estimated from Figure 7 in the source file.
e
g-N/m2-day.
f
Estimated from Figure 2 in the source file.