Browsing by Subject "bilans wodny"

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Access status: Open Access ,
Metodyka zlewniowego bilansowania zasobów wód podziemnych na przykładzie zlewni Koprzywianki
(2008-01-28) (Data obrony: 2008) Szklarczyk, Tadeusz
Wydział Geologii, Geofizyki i Ochrony Środowiska
The following project present the opportunities provided by the application of mathematical modelling to the evaluation of water balance in catchment basins of highly diversified hydrodynamic and hydrostructural conditions. The study area is the catchment basin of the Koprzywianka River together with the fragments of adjacent basins of the Vistula, Opatówka and Czarna rivers. For the study area the conceptual model of recharge, flow and drainage conditions was prepared. This model was a basis for a mathematical model, which was verified and calibrated. Then, the quality of the projection of water balances was validated for the whole catchment area and for its fragments, considering moderate and extreme discharges in surface flows. The modelling aimed: to determine the groundwater circulation system, to compare the water balances of the Koprzywianka River catchment basin with its selected fragments, to evaluate the recharge of groundwater horizons and to determine the relationships between the groundwaters and the surface flows. Furthermore, the modelling intended to calculate the disposable resources of groundwaters and to determine the exploitation conditions including the influence of exploitation on surface flows. The presented methodology of water balance determination in a catchment basin and of quantification of water resources in selected groundwater bodies and surfacewater bodies gives rise to rational groundwater management.
Access status: Open Access ,
Pilotowa instalacja odsalania wód geotermalnych w Polsce
(Wydawnictwa AGH, 2011) Tomaszewska, Barbara; Hołojuch, Grażyna
The pilot geothermal water desalination installation in Poland was commissioned at the Geothermal Laboratory of the Mineral and Energy Economy Research Institute of the Polish Academy of Sciences (PAS MEERI). Laboratory is localised in Podhale region, in south-eastern Poland. Geothermal waters are extracted from carbonate formations of the Middle Eocene and from Middle Triassic limestones and dolomites. These exhibit relatively low mineralisation - 3 g/dm$^{3}$. Their temperature at the well outlet ranges 90°C. Installation is supplied with water at a temperature of about 35°C. The capacity has been set at 1 m$^{3}$/hour of desalinated water. The objective of geothermal water desalination will be to obtain water that meets the requirements stipulated in the regulation of the Minister of Health of 29 March 2007 (Journal of Laws of 2007, No. 61, item 417) concerning the quality of water intended for human consumption. The preliminary results from the geothermal water desalination study conducted at the PAS MEERI are optimistic. In order to validate the assumptions made in the context of industrial applications, further studies have to be conducted in accordance with the project plans. It is certain, however, that the utilization of geothermal water for drinking purposes on an industrial scale will require, first of all, better and more efficient water cooling. Optimum utilization of the thermal waters obtained is an important issue for most geothermal plant both in Poland and abroad. Efficient geothermal water management has one main goal: optimizing system operation and improving the economics of geothermal plant operation. Additionally, the use of cooled water for drinking purposes, particularly for open drain installations (without injecting cooled water into the formation) will contribute to the comprehensive utilization of geothermal water and the decentralization of drinking water production. Therefore the present study concerns two significant research areas: geothermics (cooled water utilization methods) and hydrogeology (water management).