Table 1 Strategies for substrate addition in isotope batch experiments and the N removal performance.
Groups | Influent NH4+-N mg L−1 | Influent NO2−-N mg L−1 | Effluent TN mg L−1 | Rate of TN removal mg (L h)−1 |
|---|---|---|---|---|
A | None | None | 1.84 | −0.08 |
B | 100.0 | None | 98.31 | 0.07 |
C | 100.0 | 100.0 | 60.42 | 5.82 |
