Papers by Dragoslav Banjak
XVII SRPSKI SIMPOZIJUM O HIDROGEOLOGIJI sa međunarodnim učešćem, 2024
The Gorica Reservoir is part of the "Hydrosystem Trebišnjica multipurpose project," designed to m... more The Gorica Reservoir is part of the "Hydrosystem Trebišnjica multipurpose project," designed to manage the waters of Eastern Herzegovina and the Dubrovnik littoral in line with sustainable development principles. In this reservoir, water from the river Sušica, which originates from dolomites, mixes with water from the Bileća reservoir, which is influenced by limestone. This mixing results in the formation of chemically distinct water types. To understand the hydrogeochemical processes and water evolution in the Gorica reservoir, research was conducted to identify the key factors influencing these processes. The research highlights the significance of understanding the mechanisms behind the chemical composition of water in karst environments and aids in making informed decisions regarding water use and protection. Hydrogeochemical processes and water evolution in the Gorica reservoir were analyzed using inverse modeling with the PHREEQC 3.7.3-15968 software. The model revealed that the outflow of the Bileća reservoir was concentrated by a factor of 0.89, while that from the Sušica river was concentrated by a factor of 0.02 to achieve the chemical composition observed in the Gorica reservoir. This means that for every kilogram of final water in the Gorica reservoir, 0.91 kilograms of initial water were used. The primary hydrogeochemical processes in the reservoir include the dissolution of dolomite and gypsum, the diluting influence of water, and the precipitation of calcite. These processes occur independently of the seasons, as the Bileća reservoir releases significantly more water than the Sušica river.
Hydrological Sciences Journal-journal Des Sciences Hydrologiques, Mar 5, 2012
The spatial position of the Mušnica River catchment in the Dinaric Karst results in specific cond... more The spatial position of the Mušnica River catchment in the Dinaric Karst results in specific conditions of the drainage, distribution and chemical characteristics of the surface water and groundwater. This catchment is mountainous, located between 930 and 1985 m above sea level. The chemical characteristics of the waters are strongly dependent on the local lithological composition and the precipitation regime. The dominant cations are Ca 2+ and Mg 2+ , and anions HCO 3 and SO 4 2-. The surface water is characterized by low and medium mineralization, with resultant soft, medium-hard and very-hard total hardness levels. The groundwater is more mineralized than the surface water. Gacko Town and its associated thermal power plant, Gacko 1, which are located in the southern part of the Mušnica River catchment, have no modern facilities for sewage and wastewater transport or treatment. In order to prevent further water quality deterioration and to enable its sustainable use, it is recommended to ensure adequate protection measures in the catchment area. Key words hydrochemistry; water quality; groundwater-surface water relationships; Dinaric karst; Bosnia and Herzegovina Caractéristiques hydrochimiques et qualité de l'eau du bassin versant de la rivière Mušnica (Bosnie-Herzégovine) Résumé Il résulte de la localisation du bassin versant de la rivière Mušnica dans le karst dinarique des conditions spécifiques de drainage, de distribution et de caractéristiques chimiques des eaux de surface et des eaux souterraines. Ce bassin est montagneux, situé entre 930 et 1985 m d'altitude. Les caractéristiques chimiques des eaux sont fortement dépendantes de la lithologie et du régime des précipitations. Les cations dominants sont Ca 2+ et Mg 2+ et les anions HCO 3 et SO 4 2-. Les eaux de surface sont caractérisées par une minéralisation moyenne à basse, avec une dureté totale résultante douce, moyennement dure ou très dure. Les eaux souterraines sont plus minéralisées que les eaux de surface. La ville de Gacko et sa centrale thermique Gacko 1, qui sont situées dans la partie méridionale du bassin versant de la rivière Mušnica, n'ont pas d'installations modernes pour le transport ou le traitement des eaux usées. Afin de prévenir toute nouvelle détérioration de la qualité de l'eau et de permettre son utilisation durable, il est recommandé de prendre des mesures de protection adéquates dans le bassin versant. Mots clefs hydrochimie; qualité de l'eau; relations eaux souterraines/eaux de surface; karst dinarique; Bosnie-Herzégovine
Универзитет у Београду, Aug 25, 2016
International Symposium Karst 2018, Expect the Unexpected, Proceedings paper, 2018
Conceptual commitment to integrated water quality management of the Trebišnjica River catchment i... more Conceptual commitment to integrated water quality management of the Trebišnjica River catchment is inconsistent with modest results of hydrogeochemical research. In such circumstances, optimal conditions for water quality management in the Trebišnjica River catchment have not been created. Because of that, the main objectives of this study are to determine the chemical characteristics and the dominant chemical processes, which control the water composition of the Trebisnjica River catchment. In order to fulfill these objectives, the multivariate statistical analysis were used.
Hydrological Sciences Yournal, 2012
The spatial position of the Mušnica River Catchment in the Dinaric Karst results in specific cond... more The spatial position of the Mušnica River Catchment in the Dinaric Karst results in specific conditions of drainage, distribution and chemical characteristics of surface water and groundwater. This catchment is mountainous, located between 930m and 1985m height above sea level.
The chemical characteristics of the water are strongly dependent on the local lithological compositions and the precipitation regime. The dominant cations are Ca2+ and Mg2+, and anions HCO3- and SO42-. The surface water is characterized by low and medium mineralisation, with resultant soft, medium-hard and very-hard total hardness levels. The groundwater is more mineralized than the surface water.
Gacko Town and its associated Thermal Power Plant Gacko 1, which are located in the southern part of the Mušnica River Catchment, have no modern facilities for sewage and wastewater transport or treatment. In order to prevent further water quality deterioration and to enable its sustainable use, it is necessary to ensure adequate protection measures in the catchment area.
Applied Mechanics and Materials, 2013
Principal component analysis Songnen plain a b s t r a c t Water quality is the critical factor t... more Principal component analysis Songnen plain a b s t r a c t Water quality is the critical factor that influence on human health and quantity and quality of grain production in semi-humid and semi-arid area. Songnen plain is one of the grain bases in China, as well as one of the three major distribution regions of soda saline-alkali soil in the world. To assess the water quality, surface water and groundwater were sampled and analyzed by fuzzy membership analysis and multivariate statistics. The surface water were gather into class I, IV and V, while groundwater were grouped as class I, II, III and V by fuzzy membership analysis. The water samples were grouped into four categories according to irrigation water quality assessment diagrams of USDA. Most water samples distributed in category C1-S1, C2-S2 and C3-S3. Three groups were generated from hierarchical cluster analysis. Four principal components were extracted from principal component analysis. The indicators to water quality assessment were Na, HCO 3 , NO 3 , Fe, Mn and EC from principal component analysis. We conclude that surface water and shallow groundwater are suitable for irrigation, the reservoir and deep groundwater in upstream are the resources for drinking. The water for drinking should remove of the naturally occurring ions of Fe and Mn. The control of sodium and salinity hazard is required for irrigation. The integrated management of surface water and groundwater for drinking and irrigation is to solve the water issues. ª
Paper by Dragoslav Banjak
The topic of this Doctoral Dissertation are hydrogeochemical processes and water evolution in the... more The topic of this Doctoral Dissertation are hydrogeochemical processes and water evolution in the river Trebišnjica catchment, establishing their origin and mixing by application of geochemical modelling in combination with multivariate statistics techniques and geospatial data analysis.
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Papers by Dragoslav Banjak
The chemical characteristics of the water are strongly dependent on the local lithological compositions and the precipitation regime. The dominant cations are Ca2+ and Mg2+, and anions HCO3- and SO42-. The surface water is characterized by low and medium mineralisation, with resultant soft, medium-hard and very-hard total hardness levels. The groundwater is more mineralized than the surface water.
Gacko Town and its associated Thermal Power Plant Gacko 1, which are located in the southern part of the Mušnica River Catchment, have no modern facilities for sewage and wastewater transport or treatment. In order to prevent further water quality deterioration and to enable its sustainable use, it is necessary to ensure adequate protection measures in the catchment area.
Paper by Dragoslav Banjak
The chemical characteristics of the water are strongly dependent on the local lithological compositions and the precipitation regime. The dominant cations are Ca2+ and Mg2+, and anions HCO3- and SO42-. The surface water is characterized by low and medium mineralisation, with resultant soft, medium-hard and very-hard total hardness levels. The groundwater is more mineralized than the surface water.
Gacko Town and its associated Thermal Power Plant Gacko 1, which are located in the southern part of the Mušnica River Catchment, have no modern facilities for sewage and wastewater transport or treatment. In order to prevent further water quality deterioration and to enable its sustainable use, it is necessary to ensure adequate protection measures in the catchment area.