Methane formation in sewer systems

Guisasola, Albert, de Haas, David, Keller, Jurg and Yuan, Zhiguo (2008) Methane formation in sewer systems. Water Research, 42 6-7: 1421-1430. doi:10.1016/j.watres.2007.10.014


Author Guisasola, Albert
de Haas, David
Keller, Jurg
Yuan, Zhiguo
Title Methane formation in sewer systems
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2008-03-01
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.watres.2007.10.014
Open Access Status Not yet assessed
Volume 42
Issue 6-7
Start page 1421
End page 1430
Total pages 10
Place of publication Kidlington, Oxford, UK
Publisher Pergamon - Elsevier Science
Language eng
Subject C1
090409 Wastewater Treatment Processes
Abstract Methane formation and emission in sewer systems has not received as much attention as hydrogen sulphide formation. Through field measurements from two rising mains, with an average sewage temperature of 28.4 and 26.6 °C, respectively, at the time of sampling, this study shows that a significant amount of methane can be produced in sewer systems, and that this production is positively correlated with the hydraulic retention time of wastewater in these systems. The experimental results from a laboratory-scale sewer system fed with real sewage with a temperature of approximately 21 °C confirmed these field observations and further revealed that methanogenesis and sulphate reduction occur simultaneously in sewers, with methane production contributing considerably more to the loss of soluble COD in sewers than sulphate reduction. The production of methane in sewers at levels revealed by this study is a serious environmental concern as it potentially results in greenhouse emissions that is comparable to that caused by the energy consumption for the treatment of the same wastewater. Further, methane production in sewers influences sulphide production and its management due to the competition between methanogens and sulphate-reducing bacteria for potentially the same electron donors. The potential interactions between sulphate-reducing and methanogenic bacteria in sewer networks are discussed.
Keyword Methane production
Methanogens
Sewer systems
Sulphate reducing bacteria
Sulphide
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Available online 15 October 2007.

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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Created: Sat, 28 Mar 2009, 22:45:11 EST by Suzanne Read on behalf of Advanced Water Management Centre