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Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2021 → MANAGED AQUIFER RECHARGE IN SOUTH AFRICA (MARSA)

Danida - Agence danoise pour le développement international (2021)

MANAGED AQUIFER RECHARGE IN SOUTH AFRICA (MARSA)

Aquifer Recharge South Africa

Danida - Agence danoise pour le développement international

Titre : MANAGED AQUIFER RECHARGE IN SOUTH AFRICA (MARSA)

Pays : South Africa

Code projet : 20-M03GEUS

Période d’exécution : Start date : 1 September, 2021 // End date : 31 August, 2024

Présentation
Existing freshwater resources are threatened by overexploitation due to population growth, urbanisation, and climate change and many regions experience water shortage. South Africa is a water-scarce country and during the 2017-19 Southern African drought, water suppliers experienced severe difficulties supplying enough water to the population. Water scarcity is expected to become even more critical in the future due to climate change and improved utilization of available water resource is therefore urgent. Managed aquifer recharge (MAR), the purposeful recharge of water to aquifers for subsequent recovery, is used globally to replenish over-exploited groundwater resources. Due to increased water shortage worldwide, there is growing interest to use unconventional water resources for MAR such as reclaimed water. This, however, raises major concerns related to pollution of the drinking water resources. The primary aim of MARSA is to develop MAR technologies that allow for a broader span of water qualities to be used for MAR. It is hypothesised that improved removal of organic pollutants, nitrogen species, and pathogens from e.g. reclaimed water can be achieved by establishment of reactive barriers or injection of oxidizing agents to anaerobic aquifers during recharge as different redox environments are thus created. First, we will investigate the capacity of South African aquifer sediments to remove organic pollutants, nitrogen species, pathogens, and antimicrobial resistance genes and how this can be improved. Then specific MAR technologies will be tested at field conditions in South Africa using real Berg River water or reclaimed water. Finally, the potential of implementation of MAR for the groundwater resource in South Africa will be assessed considering the use of broader spans of water qualities for recharge. The outcome of MARSA will be new MAR water recycling tools to be used by water managers to combat water scarcity in South Africa and globally.

Institutions participantes
Leader : Geological Survey of Denmark and Greenland (GEUS), Denmark
Partenaires : University of the Western Cape (UWC), South Africa University of the Free State (UFS), South Africa South African Government, Water and Sanitation (DWS), South Africa Rambøll A/S, Denmark

Financement : 4,994,921 DKK

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Page publiée le 10 septembre 2021