Title :
Impact of RTD on NH3-N removal efficiency by three-phase internal fluidized bed
Author :
Jiang, Nan ; Wang, Heli ; Cheng, Li
Author_Institution :
Environ. & Ecological Dept., China Acad. of Machinery Sci. & Technol., Beijing, China
Abstract :
This paper conducted the effects of residence time distribution (RTD) on NH3-N removal efficiency by three-phase internal fluidized bed. Pulse testing was applied under different flow patterns, using NaCl as the tracer. Then number of tank-in-series was determined to approach and the reactor could be considered as a Continuous Stirred-Tank Reactor (CSTR). Different HRT was compared and it concluded that as HRT =1.5h, volume utilization ratio reached the highest level, and the maximum removal efficiency of NH3-N(>90%) was obtained. These results validated the good reliability of the RTD testing, and provided the basic data and knowledge for determination the reactor size and scale-up ratio.
Keywords :
ammonia; chemical engineering; chemical reactors; chemically reactive flow; fluidised beds; multiphase flow; pattern formation; sodium compounds; NH3-N; NaCI; continuous stirred tank reactor; flow patterns; maximum removal efficiency; pulse testing; residence time distribution; tank-in-series number; three-phase internal fluidized bed; Educational institutions; Effluents; Industries; Nitrogen; NH3-N removal; RTD; three-phase internal fluidized bed;
Conference_Titel :
Chemical, Biological and Environmental Engineering (ICBEE), 2010 2nd International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-8748-6
Electronic_ISBN :
978-1-4244-8749-3
DOI :
10.1109/ICBEE.2010.5649055
