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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yiwen Liu
  • A. Evren Tugtas
  • Keshab R. Sharma
  • Bing-Jie Ni
  • Zhiguo Yuan

Detail(s)

Original languageEnglish
Pages (from-to)142-150
Journal / PublicationWater Research
Volume89
Publication statusPublished - 1 Feb 2016
Externally publishedYes

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. © 2015 Elsevier Ltd.

Research Area(s)

  • Diffusion, Maximum rate, Methane, Modeling, Sewer sediment, 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)

Sulfide and methane production in sewer sediments: Field survey and model evaluation. / Liu, Yiwen; Tugtas, A. Evren; Sharma, Keshab R. et al.
In: Water Research, Vol. 89, 01.02.2016, p. 142-150.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review