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

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 degrees C, as well as PH of 8.0, and the corresponding removal rates of NH4+-N0NO(2)(-)-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.