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

fYear

2011

fDate

19-20 Feb. 2011

Firstpage

919

Lastpage

922

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CDCIEM.2011.170

Filename

5747964