Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 15
Articles | Volume 19, issue 15
https://doi.org/10.5194/amt-19-5157-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-5157-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 15
Research article
 | 
10 Aug 2026
Research article |  | 10 Aug 2026

Measured methane emissions from a metropolitan wastewater treatment lagoon in Victoria Australia are substantially higher than report emissions based on emission factors

Mei Bai, Pieter de Jong, Ellen Tao, and Deli Chen

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Short summary
For the first time, real-time methane (CH4) emissions from an open aerated sewage treatment lagoon were measured during winter and summer seasons in Australia. The study found that: 1. The emissions accounted for 25 % of CH4 production at the aeration digestion facilities. 2. The measured CH4 emissions were 2 times higher than estimates based on default emission factors. We recommend that urgent action is needed to mitigate CH4 emissions at wastewater treatment plants.
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