Development of a model for assessing methane formation in rising main sewers

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

104 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2874-2884
Journal / PublicationWater Research
Volume43
Issue number11
Publication statusPublished - Jun 2009
Externally publishedYes

Abstract

Significant methane formation in sewers has been reported recently, which may contribute significantly to the overall greenhouse gas emission from wastewater systems. The understanding of the biological conversions occurring in sewers, particularly the competition between methanogenic and sulfate-reducing populations for electron donors, is an essential step for minimising methane emissions from sewers. This work proposes an extension to the current state-of-the-art models characterising biological and physicochemical processes in sewers. This extended model includes the competitive interactions of sulfate-reducing bacteria and methanogenic archaea in sewers for various substrates available. The most relevant parameters of the model were calibrated with lab-scale experimental data. The calibrated model described field data reasonably well. The model was then used to investigate the effect of several key sewer design and operational parameters on methane formation. The simulation results showed that methane production was highly correlated with the hydraulic residence time (HRT) and pipe area to volume (A/V) ratio showing higher methane concentrations at a long HRT or a larger A/V ratio. © 2009 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Greenhouse gas emissions, Methane, Methanogens, Modelling, Sewers, Sulfate-reducing bacteria, Sulfide

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Development of a model for assessing methane formation in rising main sewers. / Guisasola, Albert; Sharma, Keshab R.; Keller, Jurg et al.
In: Water Research, Vol. 43, No. 11, 06.2009, p. 2874-2884.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review