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Eutrophication of water reservoirs
Kukol, Jan ; Bartoníčková, Eva (referee) ; Biela, Renata (advisor)
The first part of this thesis is focused on general explanation of eutrophication, its causes and consequences. The possible solutions of eutrophication are discussed briefly and a few examples of eutrophic reservoirs in the Czech Republic are added. The second part of this thesis is focused on ongoing modifications of water reservoir Brno and finally the effectiveness of measures are being compared.
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Destratification of Reservoirs
Sluše, Jan ; Kozubková, Milada (referee) ; Šulc, Jan (referee) ; Pochylý, František (advisor)
This doctoral thesis is focused on design of new equipment for aeration of water surface with low depth of water column. Aeration is one of ecological preventive methods to prevent growth of cyanobacteria. Increase of dissolved oxygen content in water mass leads to support of the growth of organisms which are disadvantaged by impossibility of movement in water mass and thus also to support biodiversity. Given biodiversity has a positive effect on water quality because it avoids the outbreak of one species of aquatic organism, in particular of cyanobacteria. Designed aeration equipment uses membrane formed by hollow fibre to transport oxygen into the water. When aeration dissolution of oxygen occurs directly on the membrane surface which prevents air leak in the form of bubbles. This type of aeration has low operating costs and high efficiency of input of the oxygen into the water. Distribution in the aquatic environment is ensured by special boat. This boat is moving on the water surface and the technology is installed on the upper deck. The aeration is carried out by an aeration module situated in the water. The movement of the boat is partially ensured by autonomous control.
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Problems of aeration dimensioning at WWTP´s.
Šplíchal, David ; Sousedík, Milan (referee) ; Hlavínek, Petr (advisor)
The objective of this work is to compare aeration systems of primarily mechanical and pneumatic aeration, as well as to compare various manufacturers of aeration components in terms of their advantages, positioning in aeration tanks, operation, use, efficiency and energy requirements. The second part is a description of the waste water treatment plant in the town of Česká Třebová and the development of an alternative calculation for the biological part with circulation activation, a circular sedimentation tank and a design for an aeration system in the aeration tank.
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The impact of agro-technology on the physical and hydraulic properties of the soil
Vláčilíková, Michaela ; Doležal, Petr (referee) ; Kameníčková, Ivana (advisor)
The bachelor thesis deals with the impact of agrotechnics on the physical and hydraulic properties of the soil. At the beginning of the work a literary research was elaborated on the above mentioned problems in the final part an evaluation of the physical and hydraulic characteristics of soil, which are used as indicators of soil quality. Experimental research was carried out in 2017 near the village Bohaté Málkovice, the soil on one area was processed by minimization technology and on the other parcel (with mild erosion) direct sowing was applied to the soil. The crop was sunflower.
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Measurement of infiltration in the field using MiniDisk infiltrometer
Vláčilíková, Michaela ; Doležal, Ing Petr (referee) ; Kameníčková, Ivana (advisor)
The diploma thesis deals with measuring of infiltration by MiniDisk method and its evaluation, but also with analysis of intact and grab soil sample, by means of which it is possible to assess the soil quality. The measurements took place on 30.4.2019, 4.5.2019, 12.5.2019, 2.6.2019, 30.6.2019, 2.7.2019, 31.8.2019 and 21.9.2019 on grassland near the town of Luhačovice. Grab and intact soil samples were taken from the upper soil layer and processed in a pedological laboratory. The Zhang method was used to evaluate the infiltration results. The results of soil analyzes and infiltration were processed numerically, plotted and subsequently described and compared.
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Selected hydropedological parameters as indicators of soil quality
Schneiderová, Šárka ; Doležal, Petr (referee) ; Kameníčková, Ivana (advisor)
When it comes to agriculture’s soil, the near surface layer is one of the most important layers for proper planting and their growth. It is the place where root system absorbs water and necessary nutrient are found here in the soil organic matter form. We can measure the near surface soil quality using indicators, such as physical and hydro-physical properties or soil organic matter content. The theoretical part of the bachelor thesis is focused on measuring those properties of soil, where the practical part’s objective is judging the effect of agrotechnology, based on the properties described in Czech and foreign literature. Those properties will be determined by using standard laboratory methods testing intact soil cores and grabbed soil samples. Those cores and samples were collected 4 times in total during vegetation period in 2016 in Šardičky (Vyškov district).
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Impact of uncoventional technologies of soil cultivation on soil quality
Suchá, Kateřina ; Doležal, Petr (referee) ; Kameníčková, Ivana (advisor)
Agricultural land is being handled by various tillage of soil which affects properties of soil. There are two types of tillage treatment. These are conventional (classic) tillage with plowing and minimization tillage (plowing is excluded). The aim of this particular work is to assess the quality of the soil near the village of Bohaté Málkovice, which is being (long-term) handled by minimization tillage. As indicators of soil quality, we used selected physical and physico-chemical characteristics, which are determined from analysis of disturbed and undisturbed soil samples from the top soil layer (0-10 cm) by standard methods in laboratory conditions. The theoretical part describes the basic physical properties of the soil and the ways of their determination. The practical part is devoted to the presentation of the examined locality and the results of selected physical and physico-chemical properties of the soil are presented and subsequently evaluated. In the conclusion, the impact of used tillage in Bohaté Málkovice on the selected soil properties is assessed.
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Energetic optimisation of WWTP´s operation
Čížová, Veronika ; Vachovec, Roman (referee) ; Hlavínek, Petr (advisor)
The reduction in energy consumption is nowadays of increasing importance also within the field of waste water treatment. In combination with increasing requirements for the WWTP (waste water treatment plant) outlet quality, the energy optimization becomes very challenging for the plants operators. This thesis presents possible approaches to the energy optimization and summarizes technologies and measures, where some of them are in the research phase while others are already implemented successfully. In particular, the contribution of the activation tanks aeration process to the overall energy consumption of a plant is highlighted. A change in the aeration control is tested using a mathematical model of WWTP in Mikulov, South Moravia in Czech Republic. In the new setting the aeration is regulated based on the concentration of nitrogen compounds in the activation tank. There is also a brief survey of the energy consumption of the plant and an outline of other possible energy conservation measures.
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Container sewage treatment plants up to 500 PE
Krejsová, Věra ; Kaštanová, Barbora (referee) ; Hluštík, Petr (advisor)
The aim of this bachelor´s thesis was making a survey of companies involved in producing container type waste water treatment plants in the domestic market. In the first part of the bachelor´s thesis there is an overview of types of plants, including the method of implementation, use and placement and subsequent operation. In the practical part there is a list of companies active in this field in the Czech Republic that were compared to each other in terms of technological, machine-technological and financial aspects depending on the population for which they are intended for. Data provided by these companies and their processing can be used in selection of container of waste water for expert and unprofessional public, which is considering the acquisition of container plant.
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