Abstract |
Ammonium can be converted to dinitrogen gas under anaerobic conditions with nitrite as the electron acceptor. However, in nature and in wastewater treatment plants, the nitrate is generally measured, not nitrite. In this study, the anaerobic ammonium oxidation (anammox) coupled with nitrite or nitrate was investigated and the results were compared each other. Anammox microbes adaptation was passed through three phases such as endogenous denitrification, lag phase, and anammox activation phase. Anammox microbes adapted to NO2- have better results than that adapted to NO3- in aspects of the revelation period, TN removal efficiencies, and energy generation. We concluded that the anammox microbes could also utilize nitrate as the electron acceptor without combination of other nitrate reduction. |
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Key Words |
Anammox, Denitrification, Nitrate Reduction, Adaptation, Electron acceptor |
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