Oxygen and carbon requirements for biological nitrogen removal processes accomplishing nitrification, nitritation, and anammox.

摘要: The oxygen and carbon savings associated with novel nitrogen removal processes for the treatment of high ammonia, low biodegradable organic matter waste streams such as recycle from dewatering anaerobically digested sludges are well documented.This understanding may lead some to think that similar possible if nitritation/ denitritation partial nitritation-deammonification incorporated into main liquid stream where influent is used denitrify residual oxidized (nitrite nitrate). It demonstrated net required 1.71 mg O2/mg ammonia-nitrogen converted gas long nitrogen. Less produce these processes, but less also reduction gas, resulting in reduced oxidation matter. requirement same since electron transfer conversion same. reduce estimated based on standard biological process calculations. be range 3.5 4.0 COD/mg nitrification-denitrification, 2.0 2.5 nitritation-denitritation, 0.5 nitritation-deammonification. limiting wastewater carbon-to-nitrogen ratios can guide appropriate selection given knowledge ratio. Energy mainstream incorporating include requirements loadings potential plant captured upstream energy, example, by biogas.