Title :
Nitrogen Removal Using Fluidized Bed Biofilm-A/O Reactor with Polyurethane Carrier Material
Author :
Zhao, Wei-Dian ; Wang, Xin-Hua ; Gao, Bao-Yu ; Ni, Jian-Yuan ; Hong, Wei
Author_Institution :
Shandong Key Lab. of Water Pollution Control & Resource Reuse, Shandong Univ., Jinan, China
Abstract :
This study investigated the effects of dissolved oxygen (DO) and reflux ratio on the performance of nitrogen removal in a lab-scale bio film-A/O reactor. Results showed that higher DO and reflux ratio was favorable for nitrification in aerobic reactor, but was adverse for denitrification in anaerobic reactor. Under optimal DO concentration of 4 mg/Land sludge reflux ratio of 200%, the bio film-A/O reactor exhibited excellent nitrogen removal performance with NH3-N and total nitrogen removal efficiency up to 95% and about 80%, respectively.
Keywords :
bioreactors; fluidised beds; nitrogen; oxygen; polymers; sludge treatment; DO concentration; bio film-A/O reactor; denitrification; dissolved oxygen; fluidized bed biofilm; n anaerobic reactor; nitrogen removal efficiency; nitrogen removal performance; polyurethane carrier material; sludge reflux ratio; Biomass; Effluents; Inductors; Microorganisms; Nitrogen; Wastewater; Biofilm-A/O; Fluidized bed; Polyurethane;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.170
