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

Wiktor Treichel, Andrzej Haładus, Robert Zdechlik

DOI: http://dx.doi.org/10.2478/5248

Abstract


This paper presents the application of the simulation-optimization approach to optimize groundwater intake for water supply of Tarnów agglomeration. 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 in the aim to aid the process of searching 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 Dunajec river or irrigation ditches were applied. Several constraints concerned both the maximum and minimum capacity of individual wells and 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.


Keywords


groundwater flow, simulation, optimization, water intake, exploitation

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References


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ISSN 2080-7686 (print)
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