Temperature effect on aerobic denitrification and nitrification

Article type: Research Article

Authors: Xie, Shu-guang | Zhang, Xiao-jian | Wang, Zhan-sheng

Affiliations: Department of Environmental Science and Technology, Tsinghua University, Beijing, 100084, China

Abstract: Nitrogen loss without organic removal in biofilter was observed and its possible reason was explained. A lower hydraulic loading could improve aerobic denitrification rate. Aerobic denitrification was seriously affected by low temperature (below 10°C). However, nitrification rate remained high when the temperature dropped from 15°C to 5°C. It seemed the autotrophic biofilm in BAF could alleviate the adverse effect of low temperature.

Keywords: aerobic denitrification, nitrification, biofilter, temperature effect

Journal: Journal of Environmental Sciences, vol. 15, no. 5, pp. 669-673, 2003