Journal of Pure and Applied MicrobiologyVol. 8 No. 2

Study on Denitrification Performances of Anaerobic Ammonium Oxidation and Its Influencing Factors in an Up-flow Anaerobic Sludge Bed Reactor

Yong Li and Rui Zhao1*

Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu - 611 756, People?s Republic of China.

Received on 09 January 2014 and accepted on 18 March 2014

 

ABSTRACT

This study uses the tamed anaerobic ammonium oxidation (Anammox) sludge through being inoculated in an up-flow anaerobic sludge bed (UASB) reactor to treat the simulated wastewater in order to investigate the effects of anaerobic ammonia nitrogen removal and to find out the main influencing factors of Anammox. The experimental results show that the most suitable NH4+-N and NO2--N concentration loads for Anammox bacteria are both 220mg/L, with the hydraulic retention time of 4h, temperature of 35?C, as well as PH of 8.0, and the corresponding removal rates of NH4+-N0NO2--N and TN are 97%, 98.5%, 88%, respectively. It is suggested that the UASB reactor has a highly efficient performance of denitrification, which provides a useful insight for further engineering applications.

Keywords : Anaerobic ammonium oxidation, Up-flow anaerobic sludge bed, Anammox bacteria, Denitrification, hydraulic retention time, PH, Temperature.