Modeling Substrate Diffusion in ANAMMOX Granule and Its Microbiological Implications

• 作 者: JuKai;WangLei;LvYong-tao;WeiFan;DuanXue;
• 机 构: School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology X
• 出 处: 2012水资源与城市化发展大会
• 发表日期: 2012年期

　　A mathematical model was developed to describe the anaerobic ammonium oxidation (ANAMMOX)process in Anaerobic Rotating Biological Contactor (An-RBC) reactor.ANAMMOX granules were cultivated in the An-RBC reactor by seeding simulated wastewater.The granule based reactor had a great N-loading resistant capacity.In all test period the removal of ammonia and nitrite overt 95%,the reactor had demonstrated excellent potential for N-removal.According to microelectrode test,the model simulation results on substrate diffusion in granule matched the experimental data well.The substrate micro-profiles showed that the ANAMMOX bacteria main aggregation in 700-9001m of granule.NH4+ and NO2ˉ has different penetrate ability as different diffusioncoefficient.In the core of granule,plenty of NO3-accumulation due to short of electron donor.