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Modelowanie wielowarstwowych zbiorników wodonośnych na przykładzie GZWP nr 338 – Subzbiornik Paczków–Niemodlin

Razowska-Jaworek L., Kaczorowski Z., Pasternak M., Cudak J.

Przegląd Geologiczny

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2017

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Vol. 65, nr 11/2

1234--1238

EN

The objective of this paper is to present the advantages and problems related to the application of a multi-layer model in hydrogeological investigations, exemplified by the Main Groundwater Basin No. 338. The main aquifer in this basin is Neogene, but Quaternary, Cretaceous and Palaeozoic-Proterozic aquifers have also been identified there. Due to the presence of numerous permeable layers, separated by impermeable ones of irregular distribution in the Neogene aquifer, 27 model layers have been distinguished, including 10 water-bearing horizons. A large number of model blocks caused the increase of the computational time, and a large number of layers have lengthened the calibration time of the model. However, anthropogenic or geologic threats to multi-layer structures have justified such a large number of layers, enabling the water balance for the selected part of the basin orfor the selected depth intervals with groundwater of good or bad status.

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Numerical analysis of momentum transfer processes in a mechanically agitated air – biophase – liquid system

Musiał M., Cudak J., Karcz J.

Chemical and Process Engineering

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2017

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Vol. 38, nr 3

465--475

EN

The results of numerical computations concerning momentum transfer processes in an air – biophase – liquid system agitated in a bioreactor equipped with baffles and a Smith turbine (CD 6 impeller) are presented in this paper. The effect of sucrose concentration on the distributions of the velocity of the continuous phase, gas hold-up and the size of gas bubbles in the system was analysed. Simulation results were presented in the form of the contours of the analysed magnitudes. The effect of sucrose concentration on the averaged values (i.e. determined on the basis of local values) of gas hold-up and gas bubbles size was evaluated. The results of the numerical computations of gas hold-up were compared with our own experimental data.

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Geneza i rozprzestrzenienie wód z wysoką zawartością fluoru w GZWP nr 338 Paczków-Niemodlin

Razowska-Jaworek L., Cudak J.

Biuletyn Państwowego Instytutu Geologicznego

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2009

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nr 436, z. 9/2

397-402

PL

Stężenie fluoru w wodach pitnych jest obiektem zainteresowania wielu ośrodków badawczych na świecie, ponieważ szkodliwy dla ludzi jest nie tylko jego niedobór (poniżej 0,8 mg/l), powodujący próchnicę zębów, ale również nadmiar (powyżej 1,5 mg/l), który może przyczyniać się do rozwoju fluorozy i osteoporozy. W Oddziale Górnośląskim PIG prowadzono badania dotyczące rozprzestrzenienia anomalii fluorowej w wodach neogeńskiego piętra wodonośnego w GZWP nr 338 Paczków Niemodlin. Zawartość fluoru w wodach podziemnych w tym rejonie jest wysoka i sięga od 6 do 11,5 mg/l, przekraczając wartości dopuszczalne dla wód pitnych około 10 razy. Największa anomalia występuje w rejonie Nysy. Badania potwierdziły wzrost zawartości fluoru wraz ze spadkiem rzędnej stropu poziomów wodonośnych. Najwyższe stężenia tego pierwiastka stwierdzono w poziomach zlokalizowanych na rzędnych 30-80 m n.p.m.

EN

The problem of fluoride in drinking water is currently the subject of study of many research centres in the world, because not only deficit of fluorine (below 0.8 mg / l), which causes teeth caries, but also its excess (above 1.5 mg / l), which may cause fluorosis and osteoporosis, are harmful to human being. A hydrogeochemical study conducted in the Upper Silesian Branch of the PGI lead to detailed recognition of hydrogeological and chemical conditions as well as the extent of fluoride anomaly in Neogene aquifer water in the Paczków-Niemodlin basin. The fluoride content in groundwater of the basin is high and ranges from 6.0 to 11.5 mg/l, exceeding about 10 times the permissible values for drinking water. The highest concentrations of fluoride are observed in the Nysa region. The investigations confirmed the increase of fluoride content with decreasing altitude of the aquifer top. The highest concentrations are found in the aquifer whose top is situated at 30-80 m a.s.l.