Title :
Influence of Influent C/N Ratio and Aeration Rate on the Nitrogen Removal in an Airlift Combined Biofilm Reactor (ACBR)
Author :
Guo, Haiyan ; Zhou, Jiti ; Zhang, Xiuhong
Author_Institution :
Sch. of Environ. & Chem. Eng., Dalian Jiaotong Univ., Dalian
Abstract :
A novel airlift combined biofilm reactor (ACBR) used for wastewater nitrogen removal was developed and the influence of influent C/N ratio and aeration rate on nitrification and denitrification was studied. The experimental results indicated that nitrifying efficiency declined with the increased influent C/N ratio. Increasing the aeration rate could improve the DO concentration in the aerobic zone and buffering zone and decrease the impact of organic carbon oxidization on nitrification. About 95% of COD and 80% of nitrogen removal were achieved when the influent C/N ratio was 2.7~5.3 and constant influent nitrogen loading rate 0.01 kgN/(m3.d).
Keywords :
bioreactors; nitrogen; wastewater treatment; aeration rate; airlift combined biofilm reactor; denitrification; nitrification; nitrogen removal; organic carbon oxidization; wastewater nitrogen removal; Chemical engineering; Costs; Electrons; Inductors; Microorganisms; Nitrogen; Optical buffering; Plastics; Pressing; Wastewater;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.1096
