Conference paper
Low nitrous oxide production in intermittent-feed high performance nitritating reactors
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.
Language: | English |
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Year: | 2017 |
Proceedings: | Frontiers International Conference on Wastewater Treatment (FICWTM2017) |
Types: | Conference paper |
ORCIDs: | Su, Qingxian and Smets, Barth F. |