Determination of kinetic parameters in activated sludge process for domestic wastewater treatment plant

Abstract

The process was effectively used for the treatment of domestic wastewater known as the activated sludge process. To predict the biomass growth, the Monod rate equation was applied in a 30 liter(s) aerated and agitated vessel. The projected data for the kinetic model were used to estimate the large scale aeration tank for the efficient oxygen transfer rate. Food to microorganism ratio (F/M) and HRT were examined for the desired rate of COD removal. More than 52% yield of organic removal was obtained. Also, the endogenous decay coefficient of 0.06 d-1 was obtained. The growth rate constant (Ks) and rate constant (k) were determined as 85.5 mg/l and 1.71 d-1, respectively. 90% COD removal was achieved with the eight-day-old sludge.