Chapter
May 18, 2016
Field Study on the Dissipation of Supersaturated Total Dissolved Gases in a Cascade Reservoir System
Authors: Rajib Kamal [email protected], David Z. Zhu [email protected], Michael McArthur [email protected], and Alf Leake [email protected]Author Affiliations
Publication: World Environmental and Water Resources Congress 2016
Abstract
Assessment of the dissipation of total dissolved gases (TDGs) is important in the downstream of hydropower facilities which often encounter TDG supersaturation. An analysis of the two consecutive spill events at the Peace River hydropower system, which includes the Bennett Dam and the Peace Canyon Dam, showed that the percent saturation of TDG and dissolved oxygen (DO) varied with spill rates, pre and post-spill conditions. The decay of TDG was comparatively slower than DO and the rates decreased with the drop of spill flows. For spill of 1,160 m3/s at the Peace Canyon Dam, the decay rate for TDG at the dam tailrace and at a distance 7 km downstream was found to be 0.005 and 0.0014 hr-1, respectively. A conceptual computational fluid dynamics model of the reservoir indicated that density driven currents could affect the TDG dissipation.
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Published In
World Environmental and Water Resources Congress 2016
Pages: 452 - 460
Copyright
© 2016 American Society of Civil Engineers.
History
Published online: May 18, 2016
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Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 1H9. E-mail: [email protected]
Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 1H9. E-mail: [email protected]
Environmental Risk Management, BC Hydro, 6911 Southpoint Dr., Burnaby, BC, Canada V3N 4X8. E-mail: [email protected]
Environmental and Social Issues, BC Hydro, 6911 Southpoint Dr., Burnaby, BC, Canada V3N 4X8. E-mail: [email protected]
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