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Design and Operation of Water Disinfections Plants
Krupicová, Simona ; Rajnochová, Markéta (referee) ; Kučera, Tomáš (advisor)
In the first part of my bachelor thesis I deal with individual disinfectants used for hygienic supply of drinking water based on chlorine and without chlorine. Then I mention the operation without chlorine disinfectants. In the second part of this thesis I describe individual plants using various disinfection methods and at the end of the thesis I compare these methods and use it in practice.
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Selected chemical substance and preparedness of integrated rescue system to these substance in selected area in South Bohemian region. (AMMONIA, CHLORINE, NATURAL GAS, BENZINE)
ŠEVČÍK, Martin
This bachelor thesis is focused on integrated rescue system, on it´s components and preparedness of this components to avert danger of dangerous chemical substances, specifically is this thesis focused on ammonia, chlorine, natural gas and benzine. Object of this thesis is find out whether the selected components of the integrated rescue system are able to adequately respond to the hazards resulting from the leakage of these substances. One of the partial objectives is the assessment of the preparedness and assessment of the material resources, because of these reasons, was used a questionnaire, which was filled in by the members of the Czech Republic integrated rescue system. The results of the questionnaire survey are displayed with using descriptive statistics. Results which were interesting are shown graphically. This work can be used as a source of information, as a learning tool or it can be used for compare changes in the preparedness of selected subjects after few years. Some kind of technical unprepardeness of police department and medical rescue service. The fire department was well prepared, not only because of the current material resources, but also because of constant modernization of their technology. The knowledge of all components is good enough to carry out its tasks, but there were also have been notised some mistakes in discipline of hazardous substances, which means possible health threats for rescuers. The work also includes possible solutions, for example creation of lectures, for members of the integrated rescue system which would be led by university teachers.
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Extraordinary events in the Aquapark in Uherské Hradiště
KUBÍČKOVÁ, Kamila
The thesis deals with the issue of possible chlorine leakage from the Aqua Park in the town of Uherské Hradiště. Chlorine is a toxic substance, widely used in industry. The amount of chlorine used in the aqua park does not comply with the values stipulated under the Major Accident Prevention Act, as it is under the limits set in the act and the object therefore cannot be classified into either group A or group B. Since the aqua park falls between unclassified sources, it is not subject to any obligations under this act, including processing documentation for cases of emergency. Despite that it is necessary to ensure the safety of persons in the aqua park area, as well as in its immediate vicinity in case of leakage of large quantities of the substance. The aim of the thesis is to determine whether the aqua park can ensure preparedness for emergencies, especially for chlorine leakage. Chlorine is a moderately toxic substance which irritates particularly the respiratory system, eyes and mucous membranes, and in high concentrations, it can cause pulmonary edema and death. The thesis defines its basic physical and chemical properties, the method of using and providing first aid in case of exposure to the substance. Furthermore, it presents basic concepts related to emergencies and leakages of hazardous substances as well as basic legislation dealing with the issue. Such legislation includes primarily the Act on Integrated Rescue System, Act on Chemical Substances and Mixtures, as well as the Fire Protection Act. The thesis further includes risk assessment and analysis carried out using the Cause-Consequence Analysis or cause-effect analysis. This method is used for a better understanding of failures which can occur in an enterprise. It tries to deal mainly with the evaluation of the probability of system failures and looks for the causes of such failures. Using the Aloha and Terex software programs, a chlorine leak was simulated into the surrounding areas during the summer and winter seasons. Both programs simulated a chlorine leak in the total amount of 975 kg, under the same meteorological conditions for both seasons. Based on the specified input information, endangered zones in which it is necessary to evacuate the people were determined.
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Water supply without a residual disinfectant
Rajnochová, Markéta ; Pikal, Martin (referee) ; Ručka, Jan (advisor)
The diploma thesis focuses on the water distribution system functioning without chlorine-based disinfectant. This thesis contains research of documented cases of examples of drinking water distribution systems both abroad and in the Czech Republic, which do not use disinfectants. Moreover, the thesis pay attention to chlorine and its effects on bacteria. The thesis deals with the first assessment of water supply structure, which determines whether the water supply structure is suitable for operating without disinfectant. The thesis describes the process of transition to the disinfectant-free operation and determines the undesired events, which may occur with the ending of the use of disinfectant. As a part of the research, the thesis examines the water supply system in village Kateřinice, to determine if it is suitable for operation without disinfectant.
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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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