Effect of Propionic to Acetic Acid Ratio on Denitrifying Phosphorus Removal and Nitrous Oxide Production

DOI

10.2991/aeece-15.2015.153How to use a DOI?

Keywords

Denitrifying phosphorus removal, Propionic to acetic acid ratio, PHA, N2O

Abstract

In this paper, four lab-scale sequencing batch reactors (SBRs) operated with anaerobic/anoxic configuration were long-term cultured, respectively with different ratios of propionic to acetic acid as carbon sources. Effects of propionic to acetic acid ratio on polyhydroxyalkanoates (PHA) formation, denitrifying phosphorus removal and nitrous oxide (N2O) production were investigated. Results showed that with the propionic to acetic acid ratio increased, the anaerobic synthesis of PHA reduced, and (PHV+PH2MV)/PHA ratio increased, furthermore, the rate of PHA degradation in the anoxic phase decreased, ultimately leading to more N2O production. System running efficiency with the phosphorus removal rate of 93.33%, nitrogen removal rate of 77.48% and anoxic N2O-N production to denitrified nitrogen rate of 4.15% was best when acetic acid was the sole carbon source.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yajing Li
AU  - Liping Sun
AU  - Shuping Zheng
PY  - 2015/09
DA  - 2015/09
TI  - Effect of Propionic to Acetic Acid Ratio on Denitrifying Phosphorus Removal and Nitrous Oxide Production
BT  - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering
PB  - Atlantis Press
SP  - 751
EP  - 755
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.153
DO  - 10.2991/aeece-15.2015.153
ID  - Li2015/09
ER  -