Influence of influent C/N ratio and aeration rate on the nitrogen removal in an airlift combined biofilm reactor (ACBR)
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 0.01kgN/(m3.d).
ACBR Nitrification Denitrification Influent C/N ratio aeration rate
Haiyan Guo Jiti Zhou Xiuhong Zhang
School of Environmental and Chemical Engineering Dalian Jiaotong University Dalian, China Department Department of Environmental Science and Technology Dalian University of Technology Dalian, China
国际会议
上海
英文
3683-3686
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）