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Problems of humic matters as precursor of trihalomethanes (THMs) in water
Jelínková, Zuzana ; Dolejš, Petr (referee) ; Doležalová Weissmannová, Helena (advisor)
The bachelor’s thesis deals with qualities of humic matters, their origins, structures and occurrence in aquatic environment. There are suitable methods for determination of humic substances and processes used for their removing from water. The thesis describes disinfection of water and related origin of trihalomethanes. The aim of the experimental part of the thesis is to coagulate model humic water on the laboratory mixing column including suggestion of optimal dose of selected coagulation agent and comparison of effectivity of floccules separation by membrane filtration and centrifugation. Effectivity of the removal of humic matters was determined by measuring water absorbance at wavelengths 245 nm in a silica cuvette with optical 1 cm trajectory and at 387 nm in a glass cuvette with optical 5 cm trajectory. For evaluation of quality suspension concentration of residual iron of coagulation agent in water was determined.
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Assessmant of surfactants levels in waters
Zajícová, Markéta ; Doležalová Weissmannová, Helena (referee) ; Vávrová, Milada (advisor)
The present Bachelor Thesis deals with problem of water contamination by synthetic surfactants. Surfactants represent the main component of washing and cleaning agents, from which they enter waste waters. The goal of Thesis was to monitor and evaluate volume of surfactants in waste waters from waste water treatment plant VFU Brno. Samples were being taken in the course of 7 days and we have monitored volume of anionic and cationic tensides in samples from influent and effluent stream of waste water treatment plant. For qualitative and quantitative determination were used mobile analytic measurement devices with photometric detection by company Merck. Results were processed and interpreted in data evaluation section in the end of this Bachelor Thesis.
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Evaluation of methods for determination of surfactants
Soukupová, Alena ; Doležalová Weissmannová, Helena (referee) ; Vávrová, Milada (advisor)
This bachelor thesis deals with the evaluation of the methods used for the determination of surfactants. On the base of literature search the review of possible methods applicable for the determination of detergents in the surface waters and wastewaters was set up. The theoretical part presents the definitions of the surface water and wastewater, possible sources of pollution are discussed and methods of water cleaning are listed. The definition and classification of various classes of surfactants is also included. This work is theoretical; therefore the evaluation was made on the basis of the information obtained from accessible literature. The evaluation of the discussed methods is given in the conclusion.
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Evaluation of ecosystem stress in Váh basin
Grajciariková, Eva ; Doležalová Weissmannová, Helena (referee) ; Vávrová, Milada (advisor)
The bachelor theoretical thesis was focused on the current issue of the environmental load of the ecosystem in the selected locality of Slovakia. The focus was put on the evaluation of the contamination level in the selected area of Váh’s river – basin in the Žilina region. The level of contamination was assessed on the basis of the relevant water quality indicators following the government regulation number 296/2005 C.l. The thesis describe the physical and chemical properties of the factors and their toxic effects on the environment.
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Problems of phenols in water
Tylichová, Petra ; Čáslavský, Josef (referee) ; Doležalová Weissmannová, Helena (advisor)
This bachelor`s thesis deals with the issue of phenols in the waters. The theoretical part summarises the information about the characteristics of the phenols, its use, appearance in the environment, and its effects on human health. There are described methods of determination these substance in the waters. The last chapter disserts on possible methods of eliminating the phenols from the aqueous environment with special attention paid to the adsorption method. Part of this thesis is also dedicated to the chlorinated phenols which originate from chlorination of the phenolic waters and which cause the sensory interferences of the waters. The experimental part of this thesis is dedicated to removing the phenol from a model water through the adsorption into a powdery active carbon Norit SA SUPER.
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Bioindicators - their role in the evaluation of environment
Winklerová, Lucie ; Doležalová Weissmannová, Helena (referee) ; Zlámalová Gargošová, Helena (advisor)
This thesis deals with the use of plant and animal bioindicators in an evaluation of the state of the environment. Bioindicators are divided in this work according to ecosystem for which they are used into bio indicators of terrestrial and of water ecosystem. Furthermore, they are divided according to groups of analytes, which are indicated by means of them. In the work the attention is paid to selected elements of risk, polycyclic aromatic hydrocarbons and polychlorinated biphenyls. The presence of these xenobiotics in the environment is particularly influenced by human activities. First of all individual industrial and automobile transports are permanent sources of contamination of the ecosystem with these xenobiotics. Considerable influence on the ecosystem pollution with organic and inorganic contaminants had also an injudicious application of certain fertilizers in agricultural production. The importance of bioindication and bioindicators is big. They help us not only assess the presence of xenobiotic in the environment, the development of its occurrence and sources of pollution, but they are also necessary in the evaluation of its biological effect, and responses and mechanisms of the organism which are induced by it. Biomonitoring is now an essential part of environmental protection by reason of monitoring the presence and the transport of contaminants.
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Zhodnocení výsledků měření na poddolovaném území zrušeného dobývacího prostoru Zbýšov v letech 2004 - 2011
Kajzar, Vlastimil ; Doležalová, Hana ; Němec, J.
Zhodnocení bylo vyhotoveno se zřetelem na vědecké a technické znalosti známé ke dni jeho dokončení. Jedná se o odborné posouzení záměru ukončení měření pozorovacích tras v bývalém dobývacím prostoru Zbýšov. V této lokalitě měl podnik DIAMO, s.p., o.z. GEAM v letech 2006-2011 povinnost provádět nivelační měření pro účely sledování a hodnocení vývoje poklesové kotliny spjaté s předchozí hlubinnou těžbou černého uhlí. Vzhledem k vývoji poklesů ve studované oblasti a dalším faktorům ovlivňujícím kvalitu měření se uvažuje dále nerealizovat výšková měření na pozorovacích trasách v tomto dobývacím prostoru.
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Modern Media as the Promotion Tools in the Culture and Entertainment Industry
Doležalová, Hana ; Šulcová, Irena (advisor) ; Čejka, Pavel (referee)
The main focus of this undergraduate thesis are the marketing applications of the latest promotion tools in the culture and entertainment industry. Social networks, marketing mix, promotion channels are the major areas discussed in the literature review section. The practical session follows on the literature review. Quantitative analyses of questionnaires reviles the answers on the research questions related to effective utilisation of the marketing channels (including social networks) as the promotion tool and its impact on the consumers in Hradec Kralove Region. Scope of the survey is narrowed down to the culture and entertainment industry. Tests of working hypothesis provides valuable learning lesson which is used as a base for further recommendations to marketing practicians in previously mentioned institutions.
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