Nitrification of the MBR process for sewage treatment was investigated with a pilot scale plant in this study. Complete nitrifcation occurred where the sludge retention time (SRT) was over 5 days. The maximum nitrification rate (Rmax) of the biomass was determined with batch tests and was found to be around 1.71 – 2.0 mgNO3--N/gVSS-h. Nitrification was affected more by the influent C/N ratio than SRT.

C/N ratio, kinetics, membrane bioreactor, nitrification, SRT
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