Determining the Optimal Groundwater Control System Using FUZZY-GWCS Application

U cilju razvoja metodologije povodom rešavanja problema vezanih za odbranu od podzemnih voda i izbora optimalnog sistema odbrane od podzemnih voda, izrađena je namenska aplikacija FUZZY-GWCS (Fuzzy - Groundwater Control System) u Centru za Modeliranje Podzemnih Voda. Ovom aplikacijom se vrše matematički proračuni pomoću jedne od metoda fuzzy optimizacije - fuzzy analitičko hijerarhijskg procesa. Od niza ponuđenih menadžment scenarija sistema odbrane od podzemnih voda dobijenih primenom metode hidrodinamičkog modeliranja, aplikacijom FUZZY-GWCS se bira optimalno alternativno rešenje, analizirajući različite kriterijume i podkriterijume. U radu je prikazana primena ove aplikacije na površinskom kopu.In order to develop a methodology for solving problems related to groundwater defense, and choosing the optimal groundwater defense system, a purposeful application FUZZY-GWCS (Fuzzy - Groundwater Control System) was developed in the Groundwater Modeling Center. This application uses mathematical calculations using one of the fuzzy optimization methods - a fuzzy analytical hierarchical process. From a range of offered management scenarios of groundwater protection systems obtained using the hydrodynamic modeling method, the FUZZY-GWCS application chooses an optimal alternative solution, analyzing different criteria and sub-criteria. This paper shows using this application on a surface mine

The impact of the enlargement of the nuclear power plant 'Paks' (Hungary) on groundwater resources in Vojvodina

The current decision of the neighbouring Republic of Hungary to enlarge the capacities of the existing nuclear power plant 'Paks', located on the Danube river, by two new reactors, poses a significant issue which requires extensive assessment of all aspects of the impact of such a decision on the environment in the given region due to the proximity to the territory of the Republic of Serbia. The paper is concerned with the impact of the future nuclear complex's functioning on groundwater resources in Vojvodina, based on experience in the area of groundwater reserve formation in the region of the Pannonian Basin, its utilization and protection. Furthermore, an impact assessment has been given, relative to the strategic solution for future water supply system of the northern and north-western Bačka region, according to which the construction of a groundwater regional source in the Danube alluvion near the city of Apatin is planned, an area which was subjected to detailed hydrogeological explorations and hydrodynamic investigation in recent years

Updated 'budapest method' for revitalizing radial collector wells and applicability to Belgrade's water supply source

Belgrade's water supply source is faced with the complex issue of halting a continuing decline in radial well capacity. It is possible to counteract the problem by replacing worn-out laterals. Past research has provided a basis for undertaking radial well revitalization activities. One of the questions that remained unanswered was how to overcome structural limitations - shallow emplacement of laterals. In Budapest, an innovative revitalization procedure, applying a modified Ranney method, has been used effectively for about 15 years. The laterals are installed below the bottom of the original well shaft and the screen pipes have bridge-like slots. The possibility of applying this method at Belgrade's water supply source is substantial

Hydrodynamic analysis application of contaminated groundwater remediation to oil hydrocarbons

In this paper, the application of the hydrodynamic analysis in the selected ‘pumping and treatment’ remediation method of groundwater hydrocarbon pollution in the case of the Pancevo oil refinery is examined. The applied hydrodynamic analysis represents a regular and necessary approach in modern hydrogeology. Previous chemical analysis of soil and groundwater samples at observation objects revealed their pollution by oil products. New researches included the constraction of 12 piezometric boreholes of varying depths, geoelectric soil sounding, ‘in situ’ measurement of the present contaminant, detected as a hydrophobic phase of LNAPL, chemical analysis of soil and groundwater samples with emphasis on total petroleum hydrocarbons (TPH) content, total fats and mineral oils, mercury cations and other characteristic compounds, etc. These researches define the volume of contamination issued by the ‘light’ (LNAPL) contamination phase. The selected remediation method for this type of pollution is the ‘Pump and Treat’ method, which implies the pumping of contaminated groundwater from aquifer and their subsequent treatment. A hydrodynamic method was used to select the optimal hydrotechnical solution for LNAPL extraction. On the mathematical model, the prediction calculations for two variant solutions were carried out (‘hydraulic isolation’ and complex) for the application of groundwater contamination remediation characterized as front pollution substance (by extraction and injection wells or infiltration pool). By extraction wells performing, it would be possible to remove the LNAPL from the surface of the water with special pumps-skimmers. The importance of the hydrodynamic method application is, in addition to the hydrotechnical solution selection for the LNAPL drainage, the provision of quality basis for the dimensioning of these objects based on the results of the groundwater balance

Hydrodynamic analysis of potential groundwater extraction capacity increase: case study of 'Nelt' groundwater source at Dobanovci

A comprehensive hydrodynamic analysis of the groundwater regime undertaken to assess the potential for expanding the 'Nelt' groundwater source at Dobanovci, or developing a new groundwater source for a future baby food factory, including the quantification of the impact on the production wells of the nearby 'Pepsi' groundwater source, is presented in the paper. The existing Nelt source is comprised of three active production wells that tap a subartesian aquifer formed in sands and gravelly sands; however, the analysis considers only the two nearest wells. A long-term group pumping test was con-ducted of production wells N-1 and N2 (Nelt source) and production wells B-1 and B-2 (Pepsi source), while the piezometric head in the vicinity of these wells was monitored at observation well P-1, which is located in the area considered for Nelt source expansion. Data were collected at maximum pumping capacity of all the production wells. A hydrodynamic model of groundwater flow in the extended area of the Nelt source was generated for the purposes of the comprehensive hydrodynamic analysis. Hydrodynamic prognostic calculations addressed two solution alternatives for the capacity increase over a period of ten years. Licensed Visual MODFLOW Pro software, deemed to be at the very top in this field, was used for the calculations