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Risk assessment and prediction of natural fires in the immediate vicinity\nsurface sources of drinking water.
Trnka, Miroslav ; Kudláčková, Lucie ; Čermák, P. ; Balek, Jan ; Novotný, Jan ; Homolová, Lucie ; Semerádová, Daniela ; Brovkina, Olga ; Štěpánek, Petr ; Zahradníček, Pavel ; Skalák, Petr ; Bláhová, Monika ; Benáček, Patrik ; Fischer, Milan ; Sedlák, Pavel ; Janouš, Dalibor ; Žalud, Zdeněk ; Marek, Michal V. ; Možný, M. ; Hájková, L. ; Chuchma, F. ; Knozová, G. ; Beranová, J. ; Zatloukal, V. ; Albert, J. ; Mašková, R. ; Cienciala, E. ; Vizina, A. ; Nesládková, M. ; Melišová, E. ; Hanel, M.
The methodology formulates a procedure for assessing the risks of the occurrence and spread of natural fires in the immediate vicinity of surface sources of drinking water. The methodology\nproposes methods for estimating the consequences of natural fires on surface water quality, forecasting the change in the risk of fires due to climate change and the procedure for determining the risk of secondary pollution of reservoirs due to changes in run off after a natural fire. On this basis, the methodology proposes and diversifies preventíve and operational measures.The measures were designed in connection to modeling results for the Hadce pilot síte near the Švihov reservoir and the experience with the adverse effects of extensive deforestation on the water quality in the Vranov and Vír reservoirs.
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Evaluation of environment in the Czech Republic – July 2021
Hanzlová, Radka
In July CVVM survey was focused on environmental issues. Respondents were asked about how satisfied or dissatisfied they are with the state of environment in the Czech Republic and in their place of residence. Next citizens rated the size of their satisfaction with concrete areas of environment in their residence such as cleanness of air, surrounding nature and surface water. Respondents also evaluated traffic density, level of noise and the quality of drinking water. We also examined whether people are interested about information about the state of the environment and whether they have sufficient information on the state of the environment.
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Study of surface water quality in the Ivančice area
Jonášová, Simona ; Řezáčová, Veronika (referee) ; Komendová, Renata (advisor)
Selected physical and chemical water quality parameters were measured at four sampling localities on the Jihlava River. Using UV-VIS spectrophotometry, inorganic forms of nitrogen, chlorides, total phosphorus and CODCr were determined. BOD5 was determined by the dilution method. Na+, K+ and Ca2+ ions, whose concentrations ranged from 5,75–108 mgl 1, were measured by flame emission photometry. Selected metals (Cu, Ni, Pb, Zn, Hg, Cr, Fe, Mn) were determined in water by the ET-AAS method. Decomposed sediments were determined by the FAAS method. Concentrations of Cr, Cu, Pb and Ni in water were in the range of 0,05–2,84 gl1. Metal concentrations in sediments ranged from 0,02–293 mgkg1, where nickel concentrations were above the limit. The occurrence of iron and manganese is due to the geological subsoil. For the other elements, anthropogenic source is assumed. From the measured data, the water quality is slightly variable in this locality and is classified as fourth or fifth class, i.e. as highly polluted water.
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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
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Anomalous occurences of arsenic in natural waters in the Czech Republic
Rodovská, Zuzana ; Drahota, Petr (advisor) ; Redlich, Aleš (referee)
This bachelor thesis reviews the data on the distribution of arsenic in surface and underground natural waters of the Czech Republic. In addition the thesis focuses on the occurrence of anomalous arsenic concentrations and tries to detect sources of arsenic contamination. Results of the thesis suggest high quality of the surface and groundwater in the Czech Republic with respect to arsenic. Its anomalous concentrations in the natural waters in Czech Republic have been rarely documented only in areas with strong anthropogenic impact and in areas affected by historical mining operations. Keywords: Arsenic, toxicity, contamination, surface water, groundwater, Czech Republic
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The effect of dump waters on the quality of surface stream in Czech Republic
Samšuková, Eva ; Benešová, Libuše (advisor) ; Křenková, Marcela (referee)
A landfill leachate is a chemical solution generated in the waste materials that are dumped in a landfill. According to the increasing amount of waste produced worldwide the risk that leachate water gets out of a landfill and contaminates with contained pollutants surrounding environment, e.g. nearby surface water, rises. The aim of this thesis is to evaluate the effect that leachates have to surface water in the Czech Republic. The research was built on primary data that had been obtained in several landfills in the Czech Republic. Important sources were also obtained through the secondary literature. Possible influence of leachates is also outlined by chemical calculating illustrating a hypothetical situation of leaking landfill water to a stream. My research showed that the impact of landfill water on surface water presents a great risk. It can occur during ordinary operations of the landfill operations - due to instable technical installation or due to dumping waste with a different extract conditions, but also as a consequence of extraordinary situations (e. g. storms). Surface water is mostly polluted with heavy metals, chlorides or nitrogen in variety of its forms. High concentration of organic matters is also detected by COD and BOD indicators. Exceeding legal limits threatens the whole surface...
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The study of water quality in wells Protected Landscape Area Křivolkátsko
Vobecká, Kateřina ; Benešová, Libuše (advisor) ; Tonika, Jaroslav (referee)
The water quality is an essential abiotic factor of the environment, particularly for water-linked ecosystems. It also necessary for human society for which the absence of drinking water could have disastrous consequences. This diploma thesis is focused on small resources of groundwater located in the protected area Křivoklátsko - the springs and wells. A water from the monitored wells was subjected to basic physico-chemical analysis plus some of these wells were also tested for microbiological contamination. These results were presented against current legislation and were also compared with results from Tomáš Brabenec's bachelor thesis. Key words: Křivoklátsko, wells, springs, water quality
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Behaviour of radioactive substances in the Vltava and Elbe Rivers during nuclear accident
Juranová, Eva ; Hanslík, Eduard (advisor) ; Matějíček, Luboš (referee) ; Světlík, Ivo (referee)
Behaviour of radioactive substances in the Vltava and Elbe Rivers during nuclear accident Ing. Eva Juranová Supervisor: Ing. Eduard Hanslík, CSc. Abstract This work is focused in the research of the behaviour of radioactive substances released into the hydrosphere of the Vltava River and the subsequent Elbe stretch during a severe accident at the Temelín Nuclear Power Plant. The background values of anthropogenic radionuclides in surface water, residual contamination after the Chernobyl accident and after atmospheric tests of nuclear weapons, were evaluated using two methods and these methods were compared. The migration of the accidental radioactive contaminants in the watercourse would be mainly influenced by their ability to sorb onto the solid phase in the hydrosphere. Therefore, the sorption of particular anthropogenic radionuclides onto bottom sediments and solids suspended in the water column was monitored and evaluated at several sites along the Vltava and the Elbe Rivers. Furthermore, the possibility of using tritium, which is discharged during normal operation of the Temelín power plant, as tracers for the purposes of modelling the migration of pollution, was assessed.
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Emerging pollutants issues in waters
Pohan, Tomáš ; Hrkal, Zbyněk (advisor) ; Rozman, David (referee)
Emerging pollutants (EPs) is the name for a very heterogenous group of many pollutants that have appeared in surface and groundwaters in the last few years. As this is a relatively new and extensive issue, there are problems with the lack of data, from which we could clearly assess their long-term behavior, environmental impact in the environmentand, last but not least, the long-term impact on human health. The purpose of this work is to comprehend the view of EPs and summarize the existing knowledge about their behavior in the aquatic environment, the impact on human health, monitoring methods, technological water treating methods and applicable legislation of the European Union and the Czech Republic.
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Evaluation of environment in the Czech Republic – June 2020
Hanzlová, Radka
In June CVVM survey was focused on environmental issues. Respondents were asked about how satisfied or dissatisfied they are with the state of environment in the Czech Republic and in their place of residence. Next citizens rated the size of their satisfaction with concrete areas of environment in their residence such as cleanness of air, surrounding nature and surface water. Respondents also evaluated traffic density, level of noise and the quality of drinking water. We also examined whether people are interested about information about the state of the environment and whether they have sufficient information on the state of the environment.
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