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Effect of environment on the photocatalytic properties of copper oxides
Šmatlo, Filip ; Vaněk, Jiří (referee) ; Vanýsek, Petr (advisor)
V této práci byl popsán princip fotokatalýzy. Práce se soustřeďuje na kovové oxidy, které mají široké využití ve fotokatalytických aplikacích. Bylo také popsáno různé použití fotokatalytických materiálů. Tato práce se zaměřuje zejména na využití fotokatalytických materiálů pro rozklad organických vodu znečisťujících látek. Popsaný fotokatalyzátor je oxid měďný, který má velmi dobré vlastnosti pro rozklad organických látek pomocí fotokatalýzy. Schopnost rozkladu organických látek oxidu měďného byla popsána na rozkladu organického barviva methylová oranž.
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Removal of Selected Components from the Aquatic Environment by Coagulation Process
Měřínská, Zuzana ; Márová, Ivana (referee) ; Janda, Václav (referee) ; Mergl, Václav (referee) ; Vávrová, Milada (advisor)
This thesis deals with coagulation treatment of surface water with content of humic matters, drug residues and turbidity. Commonly used coagulants (ferrous and aluminous sulphate) and natural biopolymer based on chitosan that not yet used in the Czech Republic had been studied. The aim of this work was to found the optimal application of chitosan in water treatment and comparison of its coagulation efficiency with standard inorganic coagulants. Theoretical part of the thesis contains occurrence, classification, composition, properties and importance of humic matters and drug residues and furthermore properties of chitosan and its using in water treatment. Experimental part summarizes the obtained results from the laboratory coagulation tests with inorganic coagulants and with chitosan leading to determination of its optimal dose. Other coagulation experiments were focused on finding the possibilities of combine the two coagulants (ferrous sulphate and chitosan) and to find their optimum doses and suitable ratio. The influence of pH on water treatment with using coagulation was also studied.
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Evaluation of effectiveness removing pesticides of reconstructed water treatment plant
Kovačíková, Kristýna ; Šubrt, Michal (referee) ; Biela, Renata (advisor)
Diploma thesis deals with assessing of effectiveness removing pecticides of reconstructed water treatment plant. In the introduction ismade a short research focused on pesticides, their getting into sources of drinking water and possibilities their removing by water supply processes. As part of this work are assessed effectiveness of this processes for removing pesticidal substances on specific water treatment plant and its sources of drinking water. Is made description of technology water treatment plant before and after the reconstruction, measured data of concetration pesticides in the sources and in the output from water treatment plant is processed to the tables and to the graphs. In conclusion are assessed effectiveness of the new technology for removing selected pesticidal substances and their metabolites.
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Removal of lead and other metals from water
Šopíková, Lucie ; Vybíralová, Pavla (referee) ; Biela, Renata (advisor)
This work covers the topic of metals and semimetals in water. It is divided into three parts. First, each element is characterized by its properties and behavior in water. Incidence in the environment, utilization and effects of intake on human body are described for each element. Second, means of elimination from water are introduced. Different chemical, mechanical and biological methods are discussed. In greater detail, precipitate method, cementation, electrochemical processes, sorption and biosorption are reviewed. Third, hands-on filtration experiment of polluted water with the help of different filtration materials is included. This experiment was done in a laboratory belonging to the Institute of Municipal Water Management, Faculty of Civil Engineering, Brno University of Technology.
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Hot water quality for heat
Snášelová, Tereza ; Hirš, Jiří (referee) ; Počinková, Marcela (advisor)
The diploma thesis focuses on assesment of water quality in heating systems. The experiment includes description of used methods and meters as well as analysis of collected samples. The theoretical part describes selected water properties, quality meters and sources of heat according to the material of their heat exchanger. This thesis processes design of heating system and hot water preparation for complex of administration buildings. The project includes calculations of heat losses, system proposal and two versions of possible heat source. The first version offers solution with condensing boiler with heat exchanger from stainless steel, while the second version uses condensing boiler with heat exchanger from aluminium and silicon. Both versions have their own solution of safety equipment and water treatment.
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83/5000 Removal of pesticides from drinking water using different types of activated carbon
Lahodný, David ; Svoboda,, Miroslav (referee) ; Kučera, Tomáš (advisor)
The bachelor´s thesis deals with the effectiveness of selected types of activated carbon for the removal of pesticide substances from drinking water. The thesis is divided into two parts: theoretical and practical. The first part focuses on pesticides and activated carbon. For pesticides, their nature, distribution, occurrence and possible removal are described. Activated carbon is divided according to type, production and reactivation, the process of adsorption and also the main parameters of activated carbon are described. The second part is focused on laboratory experiment of pesticide removal from model waters. There are characterized the tested types of activated carbon, described the laboratory procedure and subsequent analysis of samples. In conclusion, the evaluation of individual types of activated carbon is evaluated with consideration to efficiency.
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Variants of the first separation stage with two-stage water treatment
Urban, Jaromír ; Látal,, Milan (referee) ; Biela, Renata (advisor)
The subject of this bachelor thesis is to introduce the possibilities of the first separation stage with the two-stage treatment of raw water for drinking water. The thesis is divided into the theoretical and practical part. At the beginning of the theoretical part, I make research of raw water sources, requirements for their quality, the possibilities of water treatment for raw drinking water and the distribution of water treatment plants according to the number of separation stages. In addition, the first separation stage for two-stage water treatment is described in more detail, equipment and technology used for a given level of treatment and detail information of the individual types of the first separation stage. In the practical part of the thesis, two selected types of the first separation stage - settling tank and clarifier for specified design flow Q = 80 l/s are calculated. The following drawings are based on previous calculations. For the proposed rectangular settling tank with a horizontal flow and a clarifier with a mechanical float cloud, the ground plan, longitudinal and cross section are processed.
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Evaluation of water quality in water treatment plant Mokošín
Vosáhlo, Jan ; Vybíralová, Pavla (referee) ; Biela, Renata (advisor)
The theme of this thesis is " Evaluation of water quality in water treatment plant Mokošín". The source of water supply are 4 artesian wells. The paper first describes the supply area and water treatment plant with individua water treatment technologies. In the practical section there is the specification of contaminating elements required to be separated at the water treatment plant. Since it is an underground source of water, there is an increased amount of iron and manganese. Increased attention is given to arsenic, which occurs in two water sources in recent years. There are also offered the possibilities of removing arsenic at water treatment plant and two filter materials tested in the laboratory. Monitoring of water quality takes place always in resources and after treatment in the time period of five years, the arsenic values are reported for ten years.
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