Impact of carbon source and COD/N on the concurrent operation of partial denitrification and anammox

Bibliographische Detailangaben
Veröffentlicht in:	Water environment research : a research publication of the Water Environment Federation. - 1998. - 91(2019), 3 vom: 15. März, Seite 185-197
1. Verfasser:	Le, Tri (VerfasserIn)
Weitere Verfasser:	Peng, Bo, Su, Chunyang, Massoudieh, Arash, Torrents, Alba, Al-Omari, Ahmed, Murthy, Sudhir, Wett, Bernhard, Chandran, Kartik, DeBarbadillo, Christine, Bott, Charles, De Clippeleir, Haydée
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	Water environment research : a research publication of the Water Environment Federation
Schlagworte:	Journal Article acetate anammox denitratation final polishing glycerol methanol shortcut nitrogen removal Ammonium Compounds Nitrates mehr... Carbon 7440-44-0 Nitrogen N762921K75

Beschreibung
Zusammenfassung:	© 2018 Water Environment Federation. In this study, concurrent operation of anammox and partial denitrification within a nonacclimated mixed culture system was proposed. The impact of carbon sources (acetate, glycerol, methanol, and ethanol) and COD/NO3- -N ratio on partial denitrification selection under both short- and long-term operations was investigated. Results from short-term testing showed that all carbon sources supported partial denitrification. However, acetate and glycerol were preferred due to their display of efficient partial denitrification selection, which may be related to their different electron transport pathways in comparison with methanol. Long-term operation confirmed results of batch tests by showing the contribution of partial denitrification to nitrate removal above 90% after acclimation in both acetate and glycerol reactors. In contrast, methanol showed challenges of maintaining efficient partial denitrification. COD/NO3- -N ratio mainly controlled the rate of nitrate reduction and not directly partial denitrification selection; thus, it should be used to balance between denitrification rate and anammox rate. PRACTITIONER POINTS: The authors aimed to investigate the impact of carbon sources and COD/NO3-N ratio on partial denitrification selection. All the carbon sources supported partial denitrification as long as the nitrite sink was available. 90% partial denitrification could be achieved with both acetate and glycerol in long-term operations. COD/NO3-N ratio did not directly control partial denitrification but can be used to balance between denitrification rate and anammox rate
Beschreibung:	Date Completed 24.06.2019 Date Revised 24.06.2019 published: Print-Electronic Citation Status MEDLINE
ISSN:	1554-7531
DOI:	10.1002/wer.1016