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Publications (58)
Today, due to the increase in urban infrastructure, it is faced with the problem of overflowed waters. In urban areas, reduced rainwater infiltration increases the volume of wastewater in the sewer system, leading to water quality issues in the receiving bodies. Qualitative and quantitative analysis of overflowed waters can help reduce pollution in...
The main purpose of this paper is to design and model a sustainable water distribution network for the new housing development in Bernolákovo. WaterGEMS software and Microsoft Excel are used for the analysis and design of the water distribution network. The survey of the village was developed with the help of a global positioning system to ensure t...
In a result of the increase in impervious surfaces in the urbanized area, there is an increase in surface runoff and at the same time an overload of the sewage network. In order to reduce the mentioned negative impacts in the inner city of Bratislava, this study was developed. The aim of this study was to design as possible the most efficient possi...
Changing climatic conditions in urbanized areas have an enormous impact on the quality of life in urbanized areas. Persistent long-term dry periods, extreme downpours with large quantities or long-lasting rains are an extreme problem for efficient water management in cities. Extreme changes in the weather also result in a risk to the environment wh...
Due to the historical development of individual regions in Slovakia, there are still areas without access to public water networks. The main reason is the challenging and uneconomical construction of public networks in scattered rural settlements. The small wastewater treatment plants have gained popularity in rural areas of the Slovak Republic. Th...
In recent decades, small domestic wastewater treatment plants have become popular in rural areas of the Slovak Republic. The reason for the expansion of decentralized wastewater management is that many rural areas have scattered settlements, and a centralized wastewater disposal system is economically, technically demanding, and inefficient. The di...
Changing climatic conditions in urbanized areas enormously impact the quality of life in urbanized areas. Persistent prolonged dry periods, extreme downpours with heavy heaviness or prolonged rainfall are an extreme problem for effective water management in cities. Extreme weather changes also risk the environment when infiltrating or relieving hig...
The presented paper draws attention to the need to adapt urban areas to the negative impacts of climate change, more precisely to the solution of extreme rainfalls and long dry periods. The topic of rainwater management is popular worldwide due to the worsening situation in the field of climate change. Extreme weather fluctuations and torrential ra...
The inhabitants produce the sump waters and accumulate temporarily in the sumps. This is sewage that must be treated before it is discharged to surface waters. Slovak legislation does not allow the discharge of such waters into the soil. The possibilities of sump water treatment are given by the water management equipment of the given locality wher...
Due to the population increasing in urban settlements, the use of the territory and the surface variability of urban settlements are changing rapidly. The development of areas covered with impervious materials contributes to accelerating the runoff process, intensifying surface runoff concentration and the concentration of surface runoff pollution....
The purpose of mathematical modelling of sewer networks is mainly to assess the hydraulic capacity and monitor its behaviour under different conditions to predict the future state. Sewerage network models are also part of the design process. Their advantage is the possibility of simulating the future state of the network and the precipitation and r...
As a result of changes in social, economic, and political relations, undesirable phenomena are created that have an adverse effect on the urban environment. Surface runoff represents one of several risks to environmental policy, causing the major problem in urban agglomerations. In an urbanized area, it causes an increased runoff volume and the flo...
Dynamical modeling in water supply and treatment and wastewater treatment helps to understand the flow in the networks. Therefore, it is important to incorporate dynamic modeling into the design and assessment processes and operation for the future of urban drainage systems.
The aim of this paper was using a mathematical model to analyze the functi...
The research simulates the precipitation-runoff process in an urbanized area. The Slovak University of Technology in Bratislava, the Faculty of Civil Engineering, is chosen as the locality of interest. The construction of a mathematical model of the area of interest and the existing sewer network was used the storm-water management model software....
The paper deals with CFD simulation of a real combined sewer overflow chamber using Ansys fluent software. Simulations are created for various structural modifications. Within the results, the hydraulic parameters of the individual are evaluated with a proposal for optimal operation of the given relief chamber.
Today, the study of the city’s sewerage network is an important part of the life of the city and the environment. Ensuring optimal living conditions not only for oneself, but also for other participants in the environment should be a priority for a person. Today we can face various problems that complicate the operation of the city sewer network an...
Waste management is one of the essential areas that everyone in the world should carry about. Waste collection and treatment help to reduce the risk of the spread of various diseases. Municipal waste is waste produced in households by the population. Municipal waste can be sorted into other components, such as plastic, paper, glass, metals, and bio...
Over the last few years, climate change is one of the most important phenomena in the 21st century. It is bringing significant changes and negatively affecting the environment. This unwanted phenom causes substantial changes in climatic and hydrological characteristics that are manifested mainly in urban agglomerations. It affects extreme weather c...
This research deals with creating a hydrodynamic combined sewerage overflow chamber model an ANSYS Workbench 19.2, Fluid Flow (Fluent). The 3D graphics model was created in the SpaceClaim modeling software, which serves as the basis for hydrodynamic modeling. The model was created according to a real combined sewerage overflow chamber in Banská Bys...
The aims of the research are to focus on the analysis of qualitative parameters of surface runoff from the urbanized area (parking, roadways); subsequently, to compare the measured concentration with the recommendations of Danish and Slovak standards. Rainwater sampling carried out at several sites in Serbia and Slovakia. In the analysis were monit...
The aim of the study is to assess the hydraulic capacity of the sewer network and sewer collector recovery in the urban catchment area of Trnava.
The analysis focuses on the evaluation of situations with different precipitation frequencies. Elaboration consists of modeling the current state of the assessed sewer collector B and subsequent loading o...
The application of mathematical models has been expanding in the field of sanitary and environmental engineering. Mathematical models are used in the design and assessment of sewer networks and their facilities. Sewer network models make it possible to create a model of hydraulic and Physico-chemical processes in wastewater flowing through the sewa...
In our research, we are focused on analysing the impact of illegal rainwater connections on the sewage network. During the normal operation of the sewage network, rainwater cannot be present. These heavy rains flows are extreme during rain events and the sewerage system is significantly overloaded and functionality it is reduced. Our study is based...
This work deals with the creation of a hydrodynamic model of the combined sewerage overflow chamber in Banská Bystrica. As an object on the sewer network, we chose a combined sewerage overflow chamber, because its correct functionality directly affects the quality of the environment in the recipient. Simulations were calculated in the program Ansys...
In connection with the optimization of operation at the selected Wastewater Treatment Plant (WWTP), it is important to perform an energy audit with an assessment of the use of electricity and the subsequent economic optimization of the equipment of the WWTP. We can perform the energy balance through Life Cycle Assessment (LCA) analysis in relation...
Serbia is among the countries with the lowest percentage of industrial and municipal wastewater treatment plants. Approximately 72.0% of the cities have a sewerage system, while only 60.0% of the population are connected to the sewerage network. This article is about recent state of sewerage and wastewater treatment in Serbia. It consists of an ana...
In large urbanized areas is used rainwater drainage and that has a negative impact on the functionality of the sewerage system during heavy rainfall. Pipes and objects on the sewer network are being overloaded. This causes quick floods. In our research, we are focused on the assessment of part of the sewerage of Trnava city. The collectors C and D...
The development of urbanized areas leads to abiding negative changes in the landscape. The percentage of impermeable surfaces in the cities is increasing. Currently, efforts are being made to replace paved surfaces with alternative materials that contribute to reducing surface runoff. The aim of this paper is to get acquainted briefly with legislat...
The research work is focused on finding extremes in climate changes which are related to rainfall-runoff process at catchment area. Location of our research is set to urban area of Slovak town Levice. During the inspections process we have made necessary calibration measurements to correct the identified defects in the project documentation. The ma...
The paper shows the essence of CFD modeling in sanitary and environmental engineering. Paper includes practical example of assessment of CSO chamber, by using ANSYS Fluent software. This paper also explains the principles, upon which the ANSYS FLUENT software works. Then explains the methodology in creating the model, which is composed of: creating...
V súčasnosti je v rámci kalového hospodárstva potrebné orientovať sa v smere ďalšieho znižovania kontaminácie kalov, a to aj z pohľadu organickej kontaminácie v zmysle právnej úpravy pripravovanej EÚ. Technológie kalového hospodárstva je potrebné nielen zdokonaľovať, ale súčasne aj optimalizovať a racionalizovať. Tieto požiadavky sa na poli výskumu...
In the process of design and operation of sewerage system are used empirical formulas, which are in many cases, become obsolete and unusable when somebody can use nowadays modern technologies and materials. Therefore there is the possibility of using the mathematical models enormous importance for the enhanced environmental protection with the lowe...
The necessity of leachates treatment from the waste landfills by new ways becomes increasingly more marked. Leachates contain toxic ingredients such as pesticides, dyes, and hormonal agents, which necessarily need to be removed from the environment. It is because of their genotoxicity and estrogenic activity. The main aim of this article is to poin...
The lack of detailed knowledge about the interaction of the velocity field and suspended sludge poses an obstacle in designing more effective sedimentation tanks. This study investigates the use of CFD analysis of hydraulic processes and the influence of seasonal temperature change on a waste water treatment sedimentation tank. The object analysed...
In this research study, we are using CFD to better understand processes in a wastewater settling tank. Secondary sedimentation tanks belong to the most important objects at the wastewater treatment line. CFD plays an important part in better understanding the processes from a standpoint of operation and optimization. We conducted four CFD simulatio...
When designing a landfill, it is necessary first correctly define the impacts of deposited waste on the environment. Each landfill site is exposed exposure to rainfall. The principle is, these waters promptly lead away from the landfill and reduce their influence to sealing. The purpose of the water management of landfill is preventing discharge of...
Paper is focused to compare aspects of affecting proposal of sewage network with flat terrain and sloping terrain. Influence of the sloping of is for design an important input, which affects not only the proposal of sewage network but also effects of operating conditions In sloping terrain are the main problems velocities in the sewers, the speed o...
Method of risk expression for waste disposal as the potential pollution sources is presented in the paper. There are numerous environmental problems caused by waste disposal. The paper deals with risk analysis, applying it, solutions, procedures and final results and it shows the importance of risk analyses in all technical and environmental fields...
The paper describes the model, which was developed at the Department of Sanitary and Environmental Engineering at Faculty of Civil Engineering, STUBA in Bratislava. The system is integrated environment designed for the solving the rules on combined and separated sewer system. Environment SeWaCAD includes many of procedures, which allow solve the hy...
The paper shows the essence of CFD modelling. Paper includes practical example of assessment of stormwater basin, by using ANSYS Fluent software. In the verified mathematical models are analysed Proses and propose alternative-improving operation of the tank. This paper also explains the principles, upon which the ANSYS FLUENT software works. Then e...
The goal of this paper is the analysis of a primary settling tank at the waste water treatment plant in Humenné, SK. The analysis is performed with the use of a mathematical model from the ANSYS CFD software package, ANSYS Fluent. The article discusses hydraulic problems in the inlet zone of the settling tank, which are caused by the specific shape...
