Simulation and optimization of groundwater exploitation for the water supply of Tarnów agglomeration (southern Poland)

Abstract

Abstract. This paper presents the application of the simulation-optimization approach to optimize groundwater intake for the water supply of Tarnów agglomeration (southern Poland). Tarnów agglomeration is supplied with water from extensively exploited surface and groundwater intakes located at the confluence of the rivers Dunajec and Biała. Groundwater intakes capture water from the Quaternary aquifer, which is recharged by rainfall and direct infiltration from the rivers and irrigation ditches. Hydrogeological conditions occurring within the area under consideration were mapped by using a single-layer numerical model in Processing Modflow software. After calibrating the simulation model, a simulation-optimization approach was developed with the aim of aiding the process of searching for the best scheme of exploitation of groundwater intake. The unit response matrix method was used to connect the simulation model with the optimization procedure. In the optimization task the objective functions concerning the total volume of groundwater intake discharge and infiltration amount from the River Dunajec or irrigation ditches were applied. Several constraints concerned both the maximum and minimum capacity of individual wells and the entire intake, as well as desirable or undesirable drawdown values in selected control points and control areas. Finally, twelve variants of optimization tasks, for different boundary conditions and different objective functions, were solved and optimal schemes of well discharge distribution within the intake were calculated. The results of optimization show that, depending on the intended objective and the constraints imposed, the best exploitation scenario under the given conditions may be found.

Prediction of the Stability of Chemical Composition of Therapeutic Groundwater

“…For further investigations, the simulation-optimization approach to optimize groundwater intake may be applied (i.e., similary to that used for the water supply in Tarnów [50]). Nowadays, groundwater flow modeling is a commonly known method used to solve complicated hydrogeological issues [51], such as Modflow group (finite difference method), as well as FEFLOW (finite element method).…”

The environmental fate of metals from zinc and lead mining area in surface water (Przemsza River, southern Poland)

“…(based on data on ibris.pl and geoportal.pgi.gov.pl) The environmental fate of metals from zinc and lead mining area in surface water (Przemsza River, southern Poland) Moreover, in the last few decades, the natural conditions of the river have been disturbed due to drinking water transfer from the other drainage basins, river regulation, construction of water reservoirs, and development of depression cones in mines (Chełmicki red. 2001, Treichel et al 2015, Rzętała 2016.…”

Open-Pit Mine Dewatering Based on Water Recirculation—Case Study with Numerical Modelling

“…The reliability of forecast calculations greatly depends on the correct recognition of the water-soil environment. Methods for the assessment of hydrogeological parameters and their use in mine flooding predictions are presented in [15,22], while the possibilities of using groundwater flow modelling to optimise water abstraction are presented in [23,24].…”