Sulfide and methane production in sewer sediments: field survey and model evaluation

Liu, Yiwen, Tugtas, A. Evren, Sharma, Keshab R., Ni, Bing-Jie and Yuan, Zhiguo (2016) Sulfide and methane production in sewer sediments: field survey and model evaluation. Water Research, 89 142-150. doi:10.1016/j.watres.2015.11.050

Author Liu, Yiwen
Tugtas, A. Evren
Sharma, Keshab R.
Ni, Bing-Jie
Yuan, Zhiguo
Title Sulfide and methane production in sewer sediments: field survey and model evaluation
Journal name Water Research   Check publisher's open access policy
ISSN 1879-2448
Publication date 2016-02-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.watres.2015.11.050
Open Access Status Not Open Access
Volume 89
Start page 142
End page 150
Total pages 9
Place of publication London, United Kingdom
Publisher IWA Publishing
Collection year 2016
Language eng
Abstract Sewer sediment processes have been reported to significantly contribute to overall sulfide and methane production in sewers, at a scale comparable to that of sewer biofilms. The physiochemical and biological characteristics of sewer sediments are heterogeneous; however, the variability of in-sediments sulfide and methane production rates among sewers has not been assessed to date. In this study, five sewer sediment samples were collected from two cities in Australia with different climatic conditions. Batch assays were conducted to determine the rates of sulfate reduction and methane production under different flow velocity (shear stress) conditions as well as under completely mixed conditions. The tests showed substantial and variable sulfate reduction and methane production activities among different sediments. Sulfate reduction and methane production from sewer sediments were confirmed to be areal processes, and were dependent on flow velocity/shear stress. Despite of the varying characteristics and reactions kinetics, the sulfate reduction and methane production processes in all sediments could be well described by a one-dimensional sewer sediment model recently developed based on results obtained from a laboratory sewer sediment reactor. Model simulations indicated that the in-situ contribution of sewer sediment emissions could be estimated without the requirement of measuring the specific sediment characteristics or the sediment depths.
Keyword Sewer sediment
Maximum rate
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Advanced Water Management Centre Publications
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