Total Effluent Nitrogen

Although the idea behind denitrification is to remove nitrogen, due to the use of sewage as a carbon source for synthesis in the heterotrophic side reaction, normal anoxic denitrification, and nitrite reduction, some ammonia is produced. These productions are indicated in Eqs. (15.31), (15.36), and (15.41). For convenience, these reactions are reproduced next:

5no- + 5h+ + !?:5t£ciohi9no3 ^ ^hvno; + pn2 + ^p-^nh:

From Equation (15.43), the number of moles of ammonia nitrogen produced per mole of oxygen is

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