University Of Tehran Press Pollution 2383-451X 8 2 2022 04 01 Kinetic Characteristics and the Performance of Up-Flow Biological Aerated Filters (UBAF) for Iraqi Municipal Wastewater 621 636 85984 10.22059/poll.2021.333654.1240 EN Khairi R. Kalash Environment and Water Directorate, Ministry of Science and Technology, Baghdad, Iraq Mustafa Al-Furaiji Environment and Water Directorate, Ministry of Science and Technology, Baghdad, Iraq ِAmer N. Ahmed Environment and Water Directorate, Ministry of Science and Technology, Baghdad, Iraq Journal Article 2021 10 08 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. https://jpoll.ut.ac.ir/article_85984_e7e42c0720afbc777335acd488898236.pdf