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Chapter
May 18, 2016

Groundwater Pollution Source Identification by Optimization and the Green Element Method

Publication: World Environmental and Water Resources Congress 2016

Abstract

Pollution source identification in groundwater contaminant transport using limited concentration data of the contaminant plume is an inverse problem. In this paper, we develop a numerical-optimization approach that utilizes the green element method (GEM) and the shuffled complex evolutionary (SCE) technique to identify pollution source strengths and recover the concentration distribution of the plume for contaminant transport in groundwater systems. Two test cases are used to evaluate our proposed methodology: 1D transient case with an analytical solution and 2D transient hypothetical case that mimics a real life situation. The results indicate that the proposed methodology gives good estimates of the release history and the historical distribution of the plume even in the presence of observation and parameter errors.

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Published In

Go to World Environmental and Water Resources Congress 2016
World Environmental and Water Resources Congress 2016
Pages: 309 - 318

History

Published online: May 18, 2016

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Ednah Onyari [email protected]
School of Civil and Environmental Engineering, Univ. of the Witwatersrand, P.Bag 3, Johannesburg, WITS 2050, South Africa; Dept. of Civil and Chemical Engineering, Univ. of South Africa, P. Bag 6, Florida 1710, South Africa. E-mail: [email protected]
Akpofure Taigbenu [email protected]
School of Civil and Environmental Engineering, Univ. of the Witwatersrand, P.Bag 3, Johannesburg, WITS 2050, South Africa. E-mail: [email protected]
John Ndiritu [email protected]
School of Civil and Environmental Engineering, Univ. of the Witwatersrand, P.Bag 3, Johannesburg, WITS 2050, South Africa. E-mail: [email protected]

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