At the end of the nitrification process, after the system had reached
the apparent steady state regime, the mean values of the monitoring
parameters were: 42±8 mg L−1 TCOD, 36±10 mg L−1 SCOD, 2±3
mgN L−1 NH4
+–N, 158±28 mgN L−1 NO3
−–N, 0.25±0.18 mgN L−1
NO2
−–N, 49±50 mgCaCO3 L−1 TA, and 5.6 to 6.9 pH range.