Kinetics Study of a Suspended Growth System for Biological …
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Fig. 8 Substrate utilization kinetic for nitrification of simulated wastewater sample in batch reactor
NH 4
+ –N level of 65 ± 10 mg/L as N. Consequently, the magnitude of half velocity
constant (K s ) value was corroborated with standard values as mentioned in Table 4,
considered for nitrification of municipal wastewater stream (Metcalf and Eddy Inc.
2000). The values of the reciprocal of the reaction time (1/θ ) were plotted against
specific substrate (NH 4
+ –N) utilization rate (U N ) that are shown in Fig. 9. The value
of Y and K d was found to be 0.425 mg of MLSS/mg of NH 4
+ –N and 0.063 per day,
respectively.
Table 4 Values of kinetic constants for nitrification study
Serial number Kinetic coefficients Values from present study Typical kinetic coefficient for
municipal wastewater
(Metcalf and Eddy Inc. 2000)
1
Y
0.425
0.1–0.3
2
K d
0.063
0.03–0.06
3
k
23.25
1–30
4
k s
29.99
0.2–5
Fig. 9 Microbial growth kinetic for nitrification simulated wastewater sample in batch reactor