Calculation of N₂O Emission in the Wastewater Treatment Process of Paper Mill

DOI

10.2991/seeie-19.2019.29How to use a DOI?

Keywords

GHG emissions; wastewater treatment; nitrous oxide; total nitrogen

Abstract

Aiming at the quantification of the N₂O production from wastewater treatment plants (WWTPs) of papermaking industry, we provided a practical mathematical model. Primarily, the TNs (influent and effluent) were off-line measured with the ultraviolet spectrophotometry, and the flowrate of wastewater was the field data from on-line monitoring system. Subsequently, combining with the two variables, the determinate emission rate factor of N₂O was applied to the estimation of the N₂O emission. The results showed that the averaged 15.234 mg/m³ of N₂O was emitted during the biological nitrogen removal process in a paper mill. In addition, we analyzed some influencing factors during the operation in this article, including the dissolved oxygen (DO), pH, nitrite concentration and COD/N ratios. And the nitrite concentration in the wastewater directly increased the N₂O generation, except that other parameters have the modest influence. Compared with the researches on N₂O emissions, the proposed model is simplified to be dedicated to the wastewater treatment of papermaking industry.

Copyright

© 2019, 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  - Nishonov Akbarjon
AU  - Feini Huang
AU  - Wenhao Shen
PY  - 2019/05
DA  - 2019/05
TI  - Calculation of N₂O Emission in the Wastewater Treatment Process of Paper Mill
BT  - Proceedings of the 2019 2nd International Conference on Sustainable Energy, Environment and Information Engineering (SEEIE 2019)
PB  - Atlantis Press
SP  - 128
EP  - 131
SN  - 2352-5401
UR  - https://doi.org/10.2991/seeie-19.2019.29
DO  - 10.2991/seeie-19.2019.29
ID  - Akbarjon2019/05
ER  -