Condition of Accumulating Nitrite and Sulfur on Sulfide Autotrophic Denitrification

Nitrite as a kind of electron acceptor which is required in the process of ANAMMOX,can be achieved by partial nitrification or partial denitrification. Nitrate in the wastewater can be reduced to nitrite with sulfide serving as an electron donor on sulfide autotrophic denitrification process. This paper discussed the condition of accumulating nitrite and sulfur on sulfide autotrophic denitrification from pH,S/N ratio,sulfide concentration,HRT and COD,which would provide theory evidence for sulfide autotrophic denitrification-ANAMMOX combined technology.