Investigation of Temperature and Influent Loadon Nitrifying Treatment of Using Wastewater CFD

The paper describes the effect of temperature, ammonia concentration and feed flow rate on nitrifyingtreatment of wastewater usage Computational Fluid Dynamics (CFD) for two phase bubbly flow in a splitcylindrical airlift reactor with a 0.085 m initiator diameter and 0.505 m height. Superficial gas velocity was usedas the operational parameter, air was used as the dispersed phase, and wastewater containing ammonia wasused as continuous phase. Temperature enhancement in a constant O and NH concentrations, resulted the 2 4+increase of reactions rate also NO had an increase of about 3 times as much. By the feed flow rate increase, 2-O consumption increase and the rate of NO production increase more than NO but decrease the reactions 2 2 3- -efficiency decrease in a constant time. NH concentration enhancement leads to the increase of O 4 2+consumption and better reactions efficiency at higher NH concentration, NO concentration increases more. 4 2+ -Modeling results are compared with the experimental data. The CFD modeling results show suitable agreementwith the experimental data