Start-up of anaerobic ammonia oxidation bioreactor with nitrifying activated sludge

Article type: Research Article

Authors: ZHENG, Ping | LIN, Feng-mei | HU, Bao-lan | CHEN, Jian-song

Affiliations: Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China | Hangzhou Environmental Monitoring Station, Hangzhou 310007, China | Gongshu Division of Hangzhou Environmental Protection Bureau, Hangzhou 310024, China

Note: [] Corresponding author. E-mail: pzheng@zju.edu.cn

Abstract: The anaerobic ammonia oxidation (Anammox) bioreactor was successfully started up with the nitrifying activated sludge. After anaerobically operated for 105 d, the bioreactor reached a good performance with removal percentage of both ammonia and nitrite higher than 95% and volumetric total nitrogen removal as high as 149.55 mmol/(L ˙ d). The soft padding made an important contribution to the high efficiency and stability because it held a large amount of biomass in the bioreactor.

Keywords: Anammox bioreactor, nitrifying activated sludge, start-up

Journal: Journal of Environmental Sciences, vol. 16, no. 1, pp. 13-16, 2004