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The Study of Polyolefins Photochloration
Kučera, Vladimír ; Tocháček, Jiří (referee) ; Petrůj, Jaroslav (advisor)
This Master´s thesis deals with heterogeneous photochlorination of polyolefins and especially with the photochlorination of polypropylene itself. In the theoretical part the available information about properties, manufactory and application of chlorinated polyolefins, specifically polyethylene and polypropylene, is provided. The basic principles of the photochemistry are described, which are further applied to the issue of photochemistry chain reactions and photochemical halogenations, mainly photochlorinations. The practical part includes design and realization of few types of equipment for the heterogeneous photochlorination of polypropylene done at low temperatures (to 50° C) by gaseous chlorine in bulk or chlorine suspended in suspension of PP in CCl4. Series of chlorination was accomplished, which was varied in the type of PP, in the way of dosage Cl2 and in the period of high pressure mercury lamp irradiation (1–90 minutes). The chlorine content in prepared samples was determined by the gravimetry with ATR-FTIR spectroscopy, as well as by the Shöniger combustion method. Their accuracies were than compared. The chlorine content dependence on the period of chlorination and on the porosity of initial PP was established.
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The application of chlorine for public swimming pool water disinfection
Wagnerová, Andrea ; Svoboda, František (referee) ; Biela, Renata (advisor)
The bachelor thesis focuses on issues surrounding disinfectants of swimming pool water. The dissertation examines various chlorine based disinfectants as well as chlorine free disinfectants. Part of the thesis compares advantages and disadvantages of different possibilities of securing hygienic swimming pool water. Several complexes of public swimming pools in Brno and its neighbourhood were visited in order to examine the methods of disinfection, which are currently used at those swimming pools. Disinfectants based on chlorine are currently used the most for swimming pool water.
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Options hygiene of drinking water
Šopíková, Lucie ; Hlaváč,, Jaroslav (referee) ; Biela, Renata (advisor)
The first part my Graduate work contains an overview of all possible types of disinfection of drinking water used in the present. The second part shows examples of use of each mentioned type of drinking water disinfection methods, which can be found in practice, that is on water treatment plants. The conclusion is a comparison of advantages and disadvantages of various methods of disinfection.
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The urgent and follow-up precautions in case of leakage of chlorine - Simulated accident of vehicle carrying chlorine
KADIČ, Milan
The goal of this diploma thesis is to introduce urgent and follow-up precautions in case of leakage of chlorine - simulated accident of vehicle transporting chlorine. The major objective of this study is to analyse the risk of chlorine-transport for people with the aid of available simulation programme and to specify urgent and follow-up precautions. The next part of this study is to investigate the knowledgeability of people. The theoretical part of this study is systematical structured into a number of chapters and worked out on the basis of available legislative regulations, literature and internet sources. At first basic legislation of transport of dangerous substances is described, from the european, as well as national perspective. The next chapter deals with transport of dangerous substances, danger classes of these substances, their labeling in transport, as well as labeling of transport units. The following chapter is devoted to aspects of an accident in case of transporting of dangerous substances. This chapter demonstrates an accident with leakage of dangerous substance, its impact, escape of this substance and its spread. Further the sources and risks of transportation of dangerous substances and accident rate in this transport are described. The next chapter deals with the specific dangerous substance - chlorine. It is aimed at physico-chemical characters of chlorine, its history and its current utilisation, its effect on human health, on environment and first aid in case of contact. At the end urgent and follow-up precautions in case of an accident inkl. leakage of chlorine. The empirical part of this study is devoted to two basic research questions. Qualitative, as well as quantitative methods of research were used to answers these questions. The empirical part is devided into two major chapters. The primary purpose of this study is to simulate an accident of vehicle transporting chlorine with the aid of the programme TerEx and to determine its impact on people and surrounding. The first question was to analyse the potential dangerous for people and surroundings in case of an accident with chlorine. For this purpose the town České Budějovice was used. First the transport of liquid chlorine in small containers in the Czech Republic was analysed focusing on the southbohemian region and especially the regional city. Thereafter input data were entered. On the basis of obtained outputs were determined threats, that arise from the transport of dangerous chlorine and on the basis of simulation were characterized activities carried out by Integrated Rescue System using appropriate urgent and follow-up precautions. Part of this work was also the second research question - the level of knowledge of people located close to the simulated accident about this problem. This survey was aimed at the risk of chlorine, its transport and characteristics and impact on human health as well as protection against its adverse effects. For this purpose a group of second-year students of the local gymnasium located close to the place of simulated accident was chosen. The data were collected through a questionnaire, which contained a group of questions relating to this problem. The obtained data were evaluated using basic methods of elemental statistical analysis and graphic processing. Findings resulting from the analysis of transporting of chlorine and from the simulation using the programme TerEx show, that the danger to the population of České Budějovice in case of an accident with chlorine is significant. The issue of chlorine-transport and its risks is additionally complicated by insufficient regulation. Another negative factor of transporting of these substances is the complicated traffic situation in the country town. Based on the results of the questionary can be stated, that these students have average knowledge in this issue.
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Urgent and follow-up measures in case of chlorine leakage - a retrospective analysis of past cases
KLIMEŠOVÁ, Jitka
This thesis deals with the urgent and follow-up measures in case of chlorine leak and a retrospective analysis of past cases. Chlorine is a widely used toxic gas. It is known from history as the first practically used warfare agent. Today, it is an important chemical raw material that is used widely in industry. It is also commonly transported by road and rail. It is one of the substances whose leakages occur very often. The objective of this paper is to assess the impacts of chlorine leakage on the lives and health of people and to provide an overview of urgent and follow-up measures in case of chlorine leakage in the perspective of the integrated rescue system and the general public. In addition, to locate, describe and analyze past cases. The theoretical part contains information about chlorine, the principles of behaviour of the population in case of an accident with chlorine leakage and an overview of measures undertaken at the site of chlorine leakage. Through studying available literature and resources on the Internet, overview of major chlorine leakages in the Czech Republic as well as abroad has been created. Selected events are described in detail. The practical part simulates, using computer programme called TerEx, a chlorine leakage from a water treatment plant in Písek, South Bohemia. To compare the results, several model situations were created with varying amounts of chlorine leaked at different times of accident and atmospheric conditions. A specific example is used to assess the risks to people living near the plant and to outline the urgent and follow-up measures.
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A simulated road accident of a tank truck in Ústí nad Labem resulting in chlorine leakage
LANGOVÁ, Regina
The main theme of the diploma thesis is simulated accident of a truck transporting pressure barrels with chlorine.The study is focused on evaluating the effects of the accident on the lives and health of the local population and assessing the risks (and the level of hazards) with the use of selected methods.In this study, the truck accident is described in detail and the risks are evaluated through using the IAEA-TECDOC-727 method, which is based on quantitative risk assessment of sources according to the level of hazard to lives.
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Consequences of deliberate chlorine leakage from Spolchemie plc, Usti nad Labem, and Spolana plc, Neratovice
KADLEC, Zdeněk
Most of the current population cannot imagine their contemporary lifestyle without chemical products. This requires the chemical industry, which in some areas of our country is well developed. Spolana and Spolchemie are large chemical companies, which store huge amounts of chlorine. The aim of this study was to evaluate the simulation of leakage of chlorine from Spolana and Spolchemie using TerEx software and see if the two businesses can be important sources of risk for the population in terms of leakage of chlorine. Results of this study imply much larger consequences that would be caused by potential leakage of chlorine through intentional misuse. This possibility should be of interest to not only integrated emergency services and members of crisis management teams, but also the citizens themselves. Preparing for such an event and knowledge of things in terms of prevention is very important.
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The Analysis of Potential Consequences of Chlorine Leakage out of " Plav" Water Works Station
VILASOVÁ, Pavla
Regarding the topic of this thesis chlorine will be considered a dangerous chemical substance, especially because of the storage amount and chlorine concentration used for water treatment in Water Treatment Plant Plav. Chlorine characteristics, history and means of chlorine utilization bear its risk, methods of protection of human organism against this material belong to general parts of this thesis. Regarding presumption of coordinated operation of single components of joint rescue service during solving emergency and during liquidation emergency conditions in the analysed operation, single components of joint rescue service and activity performed by these components are detailed in this thesis.The aim of the work is to propose an analysis method with the usage of a special software programme TerEx, hazard evaluation, solution of emergency conditions in Water Treatment Plant Plav by means of a special software programme Terex, when chlorine escapes out of the restricted space followed by human lives hazard, environmental hazard. This programme after entering parameters about the amount of chemical agents, weather and climatic conditions in the surrounding premises, serves to simulation of spread of a hazardous chemical substance into surroundings, which helps flexibly lay down a procedure of the components of joint rescue service during the action.
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