National Repository of Grey Literature 81 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Hydrogeological aproaches as the tool for the mitigation of negative impact of climate change in water management: Evaluation of qualitative and quantitative aspects of managed aquifer recharge
Rozman, David ; Hrkal, Zbyněk (advisor) ; Rapantová, Naďa (referee) ; Pech, Pavel (referee)
The thesis adresses the issue of efficient use of groundwater resources under the ongoing climate change conditions, which results in reduced natural recharge of aquifers. It focuses on the assessment of qualitative and quantitative aspects of managed groundwater recharge. In addition to a review of the issues of artificial recharge, the thesis provides two outputs. The first one is a critical evaluation of the effectiveness of artificial infiltration in crystalline conditions, typical for a large part of the Czech Republic, where at present artificial infiltration is not a commonly applied procedure. The second key output is the monitoring of the occurrence of new types of micropollutants from the category of so-called emerging pollutants, which may limit the availability of drinking water sources, especially in periods of climatic stress. Research within the PhD project was conducted at several pilot sites and the results are published in peer-reviewed articles. The obtained findings confirm the suitability of the managed groundwater recharge procedure and the considerable effectiveness of attenuation processes of the aquifers in degrading micropollutant pollution.
Optimization of hydrogeological wells situation in crystalline complex
Kvíz, Jan ; Hrkal, Zbyněk (advisor) ; Eckhardt, Pavel (referee)
The main aim of the thesis is to verify optimal situation of hydrogeological wells in hard rock aquifers. The boreholes are investigated in the following three hydrogeological regions in the Czech Republic: Krystalinikum Jizerských hor v povodí Lužické Nisy, Krystalinikum Krkonoš a Jizerských hor v povodí Jizery a Podkrkonošský permokarbon. Using contemporary methods and a larger number of data, this work verifies the conclusions of historical regional studies. Statistical analysis of the yields of archival wells was used as a testing tool, taking into account their position in relation to altitude, morphology and landcover etc.
Bank infiltration in area of Jordán meander on Orlice river
Drmota, Adam ; Hrkal, Zbyněk (advisor) ; Slavík, Martin (referee)
This thesis deals with the study of the Jordán meander on the Orlice River, where the watercourse has undergone extensive revitalization in recent years, which after several decades returned the watercourse to its original riverbed. In connection with the revitalization of the watercourse, an increase in the level of groundwater in the surrounding quaternary aquifer was expected. In this case we can call it artificial bank infiltration. In order to confirm this assumption, hydrogeological boreholes HV1 to HV4 were placed at the site, and they were used for groundwater level monitoring since year 2018. The results of the monitoring document the positive impact of the revitalization on the level of groundwater in the surrounding river alluviums. Furthermore, it was found that boreholes on different banks of the Orlice River react to flow rates in the river and revitalization measures, quite differently. Differences can also be caused by orders of magnitude different hydraulic parameters on both banks, which have been verified using field pumping tests. Keywords: Bank infiltration, monitoring, pumping tests, revitalization
Interpretation and use of monitoring data from water supply wells
Kutnarová, Karolína ; Pastuszek, František (advisor) ; Hrkal, Zbyněk (referee)
The life of the hydrogeological well is not important only in petroleum geology but also in the water industry. Nowadays, when the demand of water rises, it is necessary to ensure the smooth running of the wells and care as much as possible about their condition. The aim of this thesis is try to apply the methods of production analysis commonly used in oil production in the oil industry for water supply wells. In the thesis I will focus on monitoring the productivity of the well with regard to increasing the hydraulic losses caused by clogging. iv
The issue of drugs in surface and ground waters
Šrot, Martin ; Hrkal, Zbyněk (advisor) ; Datel, Josef (referee)
The presented work deals with the state of research of medicinal substances in water formations of Czech Republic and in smaller ammount it deals with this issue abroad. It provides an overview of the most frequently occurring medicinal substances and methods for their detection and also describes the possible sources of pollution and impact of these substances on the environment. Keywords: ground water, surface water, drugs, contamination
Pharmaceuticals issues in groundwaters
Šrot, Martin ; Hrkal, Zbyněk (advisor) ; Datel, Josef (referee)
Main objective of the diploma thesis was to observe the concentrations of selected types of drugs in the environment around the area of the village Horní Beřkovice. This goal was achieved by monitoring of the drugs concentration in surface and ground waters at Horní Beřkovice site. Monitoring system allowed to detect the passage of pollution from the source of the contamination, through sewage treatment plant, the unsaturated zone and aquifer to a potential user of contaminated groundwater. The diploma thesis is based on the field data from TACR project. I have analyzed data from the six samplings at the area of the village Horní Beřkovice with regard to the observed drugs or their residues in surface and ground waters. I have compared the results with data from the sewage treatment plants in the river basin of Želivka. Keywords: ground water, surface water, sewage treatment plant, drugs, contamination

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