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- Title
Methane emission estimates using chamber and tracer release experiments for a municipal waste water treatment plant.
- Authors
Yver-Kwok, C. E.; Müller, D.; Caldow, C.; Lebègue, B.; Mønster, J. G.; Rella, C. W.; Scheutz, C.; Schmidt, M.; Ramonet, M.; Warneke, T.; Broquet, G.; Ciais, P.
- Abstract
This study presents two methods for estimating methane emissions from a waste water treatment plant (WWTP) along with results from a measurement campaign at a WWTP in Valence, France. These methods, chamber measurements and tracer release, rely on Fourier Transform Infrared (FTIR) spectroscopy and Cavity Ring Down Spectroscopy (CRDS) instruments. We show that the tracer release method is suitable to quantify facility- and some process-scale emissions, while the chamber measurements, provide insight into individual process emissions. Uncertainties for the two methods are described and discussed. Applying the methods to CH4 emissions of the WWTP, we confirm that the open basins are not a major source of CH4 on the WWTP (about 10% of the total emissions), but that the pretreatment and sludge treatment are the main emitters. Overall, the waste water treatment plant represents a small part (about 1.5 %) of the methane emissions of the city of Valence and its surroundings, which is lower than the national inventories.
- Subjects
FRANCE; METHANE; EMISSION control; SEWAGE disposal plants; FOURIER transform infrared spectroscopy; CAVITY-ringdown spectroscopy
- Publication
Atmospheric Measurement Techniques Discussions, 2015, Vol 8, Issue 3, p2957
- ISSN
1867-8610
- Publication type
Article
- DOI
10.5194/amtd-8-2957-2015