期刊名称：Iranica Journal of Energy and Environment (IJEE)
印刷版ISSN：2079-2115
电子版ISSN：2079-2123
出版年度：2011
期号：3134
页码：8-17
出版社：Noshirvani University of TEchnology
摘要：The paper describes the effect of temperature, ammonia concentration and feed flow rate on nitrifying treatment of wastewater usage Computational Fluid Dynamics (CFD) for two phase bubbly flow in a split cylindrical airlift reactor with a 0.085 m initiator diameter and 0.505 m height. Superficial gas velocity was used as the operational parameter, air was used as the dispersed phase, and wastewater containing ammonia was used as continuous phase. Temperature enhancement in a constant O2 and NH4+ concentrations, resulted the increase of reactions rate also NO2- had an increase of about 3 times as much. By the feed flow rate increase, O2 consumption increase and the rate of NO2- production increase more than NO3- but decrease the reactions efficiency decrease in a constant time. NH4+ concentration enhancement leads to the increase of O2 consumption and better reactions efficiency at higher NH4+ concentration, NO2- concentration increases more. Modeling results are compared with the experimental data. The CFD modeling results show suitable agreement with the experimental data.
