Model-based evaluations of operating parameters on CANON process in a membrane-aerated biofilm reactor

Abstract

Abstract Nitrogen compounds, such as ammonium, naturally appear in most wastewaters necessitating treatment in order to prevent oxygen depletion and eutrophication of surface water bodies. Conventional biological nitrogen removal from wastewater usually performed using possible set-ups of sequential aerobic nitrification and anoxic denitrification processes. The completely autotrophic nitrogen removal over nitrite (CANON) process is a combination of partial nitrification an Anaerobic Ammonia Oxidation (ANAMMOX) in which the aerobic ammonium oxidizers and ANAMMOX bacteria perform two sequential reactions under oxygen-limited conditions. CANON process is suitable to remove ammonium from wastewaters characterized by the low content of organic carbon yet abundance of ammonium. It performs with limited volume and reasonable budget; hence, any available nitrification unit might be converted into a new improved one rather easily while benefiting from flexibility of CANON control strategies. To better understand ...