Geochemical and flow modelling as tools in monitoring managed aquifer recharge |
| |
| Institution: | 1. Department of Geosciences and Geography, P. O. Box 64, 00014, University of Helsinki, Finland;2. Turku Region Water Ltd. TSV, Turku, Finland;3. Geological Survey of Finland GTK, Espoo, Finland;4. Department of Geosciences and Geography, University of Helsinki, Finland;1. División de Geociencias Aplicadas, Instituto Potosino de Investigación Científica y, Tecnológica, San Luis Potosí, Mexico;2. Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, Mexico;1. CSIRO Land and Water Research Flagship, Private Bag No 2, Glen Osmond, SA 5064, Australia;2. Geoscience Australia, GPO Box 378, Canberra, ACT 2601, Australia;1. Grup de Mineralogia Aplicada i Geoquímica de Fluids, Departament de Mineralogia, Petrologia i Geologia Aplicada, SIMGEO UB-CSIC, Facultat de Ciències de la Terra, Universitat de Barcelona (UB), C/Martí i Franquès, s/n – 08028 Barcelona, Spain;2. Department of Civil and Environmental Engineering (DECA), Universitat Politècnica de Catalunya (UPC), c/Jordi Girona 1-3, 08034 Barcelona, Spain;3. Associated Unit: Hydrogeology Group (UPC-CSIC), Spain;4. Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000 Neuchâtel, Switzerland;5. Institute of Environmental Assessment and Water Research (IDAEA), CSIC, c/Jordi Girona 18, 08034 Barcelona, Spain;6. Serra Hunter Fellow, Generalitat de Catalunya, Spain;1. Clark and Associates, Adelaide, Australia;2. CSIRO Land and Water, PMB2 Glen Osmond, SA 50564, Australia;3. CSIRO Land and Water, PMB Wembley, WA 6014, Australia;4. City of Salisbury, PO Box 8, Salisbury, SA 5108, Australia;1. Department of Environmental Planning, Graduate School of Environmental Studies, Seoul National University, Seoul, 08826, Republic of Korea;2. Department of Environmental Science, Kangwon National University, Chuncheon, 24341, Republic of Korea;3. Environmental Planning Institute, Seoul National University, Seoul, 08826, Republic of Korea |
| |
| Abstract: | Due to a growing world population and the effects of anthropogenic climate change, access to clean water is a growing global concern. Managed aquifer recharge (MAR) is a method that can help society's response to this increasing demand for pure water. In MAR, the groundwater resources are replenished and the quality of the recharged surface water is improved through effects such as the removal of organic matter. This removal occurs through mechanisms such as microbial decomposition, which can be monitored by studying the isotopic composition of dissolved inorganic carbon (DIC). Nevertheless, the monitoring can be difficult when there are other factors, like dissolving calcite, affecting the isotopic composition of DIC.The aims of this study were to establish a method for monitoring the decomposition of organic matter (dissolved organic carbon – DOC) in cases where calcite dissolution adds another component to the DIC pool, and to use this method to monitor the beginning and amount of DOC decomposition on a MAR site at Virttaankangas, southwestern Finland. To achieve this, we calculated the mean residence times of infiltrated water in the aquifer and the fractions of this water reaching observation wells. We conducted geochemical modelling, using PHREEQC, to estimate the amount of DOC decomposition and the mineral reactions affecting the quality of the water. |
| |
| Keywords: | Managed aquifer recharge Geochemical modelling Water purification Isotopes DIC DOC |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
