Nitrous oxide (N2O) production from autotrophic nitrogen removal processes, especially nitritating systems, is of growing concern. N2O dynamics were characterized and N2O production factors were quantified in two lab-scale intermittent-feed nitritating SBRs. 93 ± 14% of the oxidized ammonium was converted to nitrite, with the average total net N2O production of 2.1 ± 0.7% of the ammonium oxidized. Operation with intermittent feeding appears an effective optimization approach to mitigate N2O emissions from nitritating systems. Net N2O production rates transiently increased with a rise in pH after each feeding, indicating a potential role of pH in N2O production.
|Number of pages||1|
|Publication status||Published - 2017|
|Event||Frontiers International Conference on Wastewater Treatment (FICWTM2017): FICWTM 2017 - Palermo, Italy|
Duration: 21 May 2017 → 24 May 2017
|Conference||Frontiers International Conference on Wastewater Treatment (FICWTM2017)|
|Period||21/05/2017 → 24/05/2017|