Search Results

You are looking at 1 - 9 of 9 items for

  • Author or Editor: Ivana Marko x
  • Refine by Access: All Content x
Clear All Modify Search

In analysis of drinking water frequently ‘new’ elements are occurring, causing a change in water quality. Among these elements bromates are included. Bromates (BrO3 -) are toxic substance that is not commonly determination in drinking water. They are usually formed as byproducts of water disinfection by ozone in the present of bromine ions (BrO-) in treated water. In some cases, they can be in natural form, for instance in the water source Dvorníky in Slovak Republic. As stated by Environmental Protection Agency bromates are classified as a dangerous substance that can cause health problems and therefore they must be removed from the water.

Restricted access

Abstract

This paper is about comparing the effectiveness of the sorbent materials of granulated activated carbon in removing of bromates from drinking water. The limit value (10 µgl−1) of bromates in the drinking water was stated by World Health Organization. In order to insure the reduced concentration of bromates in the drinking water, an experiment was performed using the batch test. In this experiment different types of sorbent materials with different properties were testing. Based on batch test were measured the parameters like the immediate adsorption capacity, the adsorption efficiency, and the concentration of bromates after the adsorption were measured at the evaluated time.

Restricted access
Pollack Periodica
Authors:
Marek Csóka
,
Ivana Marko
,
Gergely Rózsa
, and
Štefan Stanko

Abstract

The goal of this work is the hydraulic capacity assessment of selected combined sewer systems in the city of Trnava. The selected sewer system constitutes from 160 sections 3.3 km long. Hydraulic capacity assessment will test sewer system, created in SeWaCAD program with design rainfall events with varied frequencies. The result of assessment showed that hydraulic capacity of combined sewer system did not meet requirements to properly work. Malfunctioning sewer pipelines must be changed. Design rain with frequency at least one in two years will be used as restoration model.

Restricted access
Pollack Periodica
Authors:
Réka Csicsaiová
,
Štefan Stanko
,
Ivana Marko
, and
Jaroslav Hrudka

Abstract

The article is aimed at finding out the behavior of the combined sewer network in the event of the occurrence of extreme precipitation events, which are associated with changes in the rainfall - runoff process in the urbanized area. Given the current situation of increased surface runoff in the urbanized area, it is necessary to extend the use of objects to reduce rainfall to the sewerage network. Part of the case-study was the design of percolation facilities in town Vráble, which are among the most used and most effective reduction measures. After designing the infiltration equipment and reducing the amount of rainwater discharged into the single sewerage network, the assessment of the sewerage network is satisfactory throughout the whole territory.

Restricted access
Pollack Periodica
Authors:
Ivana Marko
,
Réka Wittmanová
,
Jaroslav Hrudka
,
Gergely Rózsa
, and
Ivona Škultétyová

Abstract

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 rain type was stimulated by the block type of rain and real precipitation events. The study results showed that some parts of the existing sewer network are overloaded already during a lower intensity rain event. Based on the results achieved in the future, it is considered with the proposal of measures for rainwater management.

Restricted access
Pollack Periodica
Authors:
Marek Šutúš
,
Ivona Škultétyová
,
Ivana Marko
,
Réka Wittmanová
, and
Štefan Stanko

Abstract

Stretching periods between precipitations have been recorded, and an adjustment of the dispersion of rainfall over the long run could be seen. An expanded number of these peculiarities have additionally been affirmed by the international panel on climate change. Due to this adjustment of the reallocation of water and the effect of high urbanization, the sewerage frameworks are affected. The aim of the work was to compare simulations of the rain event on the combined sewer overflow due to the reduced water quality recorded in the Trnávka River. The current state and the proposed building modification were compared because the current hydraulic and construction modification of the combined sewer overflow is absolutely not corresponding to the environmental regulations.

Restricted access
Pollack Periodica
Authors:
Réka Wittmanová
,
Jaroslav Hrudka
,
Ivana Marko
,
Andrea Raczková
, and
Štefan Stanko

Abstract

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 functionality of combined sewer networks during a precipitation event on 13 October 2020. The analysis was performed based on the results from the assessment of the hydraulic capacity of the sewer network using the MOUSE model in the MIKE URBAN software. This study results that the evaluated sewer network does not fulfill his purpose during heavy rainfall events.

Restricted access
Pollack Periodica
Authors:
Réka Csicsaiová
,
Ivana Marko
,
Jaroslav Hrudka
,
Ivona Škultétyová
, and
Štefan Stanko

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 of this collector by several block rainfalls. Based on the results of the analysis, the recovery of the sewer network proposed.

Restricted access
Pollack Periodica
Authors:
Ivana Marko
,
Réka Csicsaiová
,
Jaroslav Hrudka
,
Ivona Škultétyová
,
Štefan Stanko
, and
Paula Brandeburová

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 monitoring, the qualitative parameters as pH value, water conductivity, chemical oxygen demand, and heavy metals. The results show the presence of copper, zinc, lead, aluminum, cadmium, chromium and nickel. The concentration of these parameters was several times higher than the allowed limit values. Based on these results, it is necessary to design measures to ensure surface runoff before infiltration.

Open access