Article (Scientific journals)
Parametric assessment of hydrochemical changes associated to underground pumped hydropower storage
Pujades, Estanislao; Jurado, Anna; Orban, Philippe et al.
2019In Science of the Total Environment, 659, p. 599-611
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The official published paper can be found on: https://doi.org/10.1016/j.scitotenv.2018.12.103


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Keywords :
groundwater; UPSH; hydrochemical impact; UPSH efficiency; hydropower storage; underground reservoir
Abstract :
[en] Underground pumped hydropower storage (UPHS) using abandoned mines is an alternative to store and produce electricity in flat regions. Excess of electricity is stored in form of potential energy by pumping mine water to a surface reservoir. When the demand of electricity increases, water is discharged into the mine (i.e., underground reservoir) through turbines producing electricity. During the complete operational process of UPHS plants, hydrochemical characteristics of water evolve continuously to be in equilibrium successively with the atmosphere (in the surface reservoir) and the surrounding porousmedium (in the underground reservoir). It may lead to precipitation and/or dissolution of minerals and their associated consequences, such as pH variations. Induced hydrochemical changes may have an impact on the environment and/or the efficiency (e.g., corrosions and incrustations affect facilities) of UPHS plants. The nature of the hydrochemical changes is controlled by the specific chemical characteristics of the surrounding porous medium. However, the magnitude of the changes also depends on other variables, such as hydraulic parameters. The role of these parameters is established to define screening criteria and improve the selection procedure of abandonedmines for constructing UPHS plants. This work evaluates the role of the main hydrogeological factors for three different chemical composition of the porous medium. Results are obtained by means of numerical reactive transport modeling. Potential impacts on the environment (mainly on groundwater and surface water bodies) and on the efficiency of the UPHS plants vary considerably from a hydraulic parameter to another showing the need for a detailed characterization before choosing locations of future UPHS plants.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Pujades, Estanislao;  UFZ – Helmholtz Centre for Environmental Research, Leipzig > Department of Computational Hydrosystems
Jurado, Anna;  Technische Universität Dresden > Institute for Groundwater Management
Orban, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Parametric assessment of hydrochemical changes associated to underground pumped hydropower storage
Publication date :
01 April 2019
Journal title :
Science of the Total Environment
ISSN :
0048-9697
eISSN :
1879-1026
Publisher :
Elsevier, Netherlands
Volume :
659
Pages :
599-611
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 600405 - BEIPD - Be International Post-Doc - Euregio and Greater Region
Name of the research project :
SMARTWATER
Funders :
Public Service of Wallonia – Department of Energy and Sustainable Building
CE - Commission Européenne [BE]
Available on ORBi :
since 15 January 2019

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