The average COD, BOD5, TKN and
ammonium removal efficiency were 82.3%, 96.4%, 94.9% and 93.3%,
respectively, similar to the average removal efficiency achieved by
the conventional activated sludge and nutrient removal processes.
Approximately 300 mL sludgewas discharged daily in order to keep
the sludge retention time (SRT) at 20 d. The results indicated that
the bench system that simulated the Bolivar WWTP was operated
in a stable manner