kinetic characteristics and the performance of up-flow biological aerated filters (ubaf) for iraqi municipal wastewater

This study utilized kinetic models to study the treatment efficiencies of a laboratory-scale up-flow biological aerated filters reactor (ubaf). the treatment efficiency of a model reactor was studied using different operating conditions of the hydraulic retention times, organic loading rates, and kinetic parameters. as a result of the calculations, the second-order and modified stover/kincannon models are appropriate. the substrate removal rate constant k2(s) was 1.7 per day for the reactor, with a correlation coefficient of 0.9979. utilizing the modified stover/kincannon model, the coefficient of the determined concentration was 0.9987; 0.9265; and 0.9685 for chemical oxygen demand (cod); ammonium nitrogen (nh4^+-n); and total nitrogen (tn), respectively. the calculation of the saturation value constants and maximum utilization rate for chemical oxygen demand (cod); ammonium nitrogen (nh4^+-n); and total nitrogen (tn) was performed using the modified stover-kincannon model were 178.57 and 201.80 for cod; 1.876 and 4.6 for nh4 ^+-n; 3.823 and 6.644 for tn, respectively. it is possible to determine the kinetic parameter for removing cod, nh4^+-n, and tn from wastewater by using the modified stover-kincannon model.