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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

Analýza zdrojů znečištění povrchových a podzemních vod v souvislosti se zásobováním pitnou vodou obce Studené

Suchodol, Jiří January 2018 (has links)
This diploma thesis deals with the analysis of sources of groundwater and surface water pollution together with the use of the territory. The literary research describes con-cepts, divisions and other important topics related to groundwater and surface water. The practical part deals with water quality in the village Studené (underground and surface water). Results, measurements and draft measures are also presented. The aim is to take water samples from the Nekořský brook and to evaluate them in the university laboratory and to analyze the results of drinking water analyzes. Based on the evaluation of all the information obtained, it is proposed measures to improve the quality of surface water and groundwater (drinking water). The area of interest is located in the village of Studené.
112

Monitoring dynamiky půdní vlhkosti v agroekosystému

Bednařík, Martin January 2019 (has links)
The aim of my thesis was to monitor and analyse the dynamics of soil moisture (Θ) through the gravimetric method using Kopecky's physical rollers (KFV) and the capacitance method using Theta Probe ML2x (FDR) and CS616 (TDR) sensors. The measurement took place in the cadastral areas of the village Vícemelice and Polkovice. I conducted 10 parallel measurement campaigns of KFV and Theta Probe in Vícemilice and 4 in Polkovice. CS616 sensors were located stationary in both locations throughout the whole period and provided continual time series Θ. In Vícemilice, Theta Probe undervalued by 11.4 % compared to the KFV. The CS616 undervalued by 6.5 % compared to KFV and overvalued by 3.9 % Theta Probe. In Polkovice, Theta Probe undervalued by 1 % compared to KFV. The CS616 sensors systematically overvalued compared to the other two methods. It overvalued by 40.9 % compared to KFV and by 42.1 % compared to Theta Probe. Furthermore, the overvaluation was higher with a greater depth, while it was only 11 % at the top layer. Lastly, a survey of the suction pressure of soil water in relation to Θ was conducted near Vícemilice and the results of Θ measured by CS616 sensors were compared to the values simulated by SoilClim model which is one of the tools used to monitor water supplies in soil, in particular the occurrence of drought at the national level. Based on the results obtained in the framework of the submitted thesis, it can be stated that the indirect methods, in particular the Theta Probe, have proven to be useful tools for monitoring soil moisture. Compared to the destructive method, they represent significant time savings and, due to their accuracy, they can be recommended for drought monitoring, calibration of mathematical models, satellite imaging, or testing of a variety of hypotheses related to the water balance in scientific experiments.
113

Zhodnocení revitalizace vodní nádrže Olešná

Forgačová, Kristýna January 2018 (has links)
This diploma thesis aims to assess the restoration of the Olešná water reservoir. The goal of the thesis is to evaluate the measured values of the risk elements and hazardous substances from the sediments extracted from the Olešná reservoir according to Decree No. 257/2009 Coll. on the Use of Sediments on Agricultural Land. Another objective of the thesis is the analysis of basic parameters of water quality. The selected parameters are aggregate phosphorus, aggregate nitrogen, calcium and magnesium. The results of the monitoring are compared with the values of permissible surface water pollution from the Government Ordinance No. 401/2015 Coll. The source data for this thesis were provided by Povodí Odry, s.p. (Odra River Basin Enterprise). Literature review relates to topics of water reservoirs, soil erosion, sediments, quality and pollution of surface waters.
114

Studie nakládání s odpadními vodami v obci Křetín

Alexová, Ludmila January 2018 (has links)
This diploma thesis deals with the design of an appropriate waste water treatment system in Křetín village. The current state of waste water management in the village was evaluated on the basis of field survey of the site and implementation of a questionnaire survey. The goal of the study is to propose possible ways of waste water treatment as well as the appropriate location of these alternatives. Part of the thesis is a literary overview of the studied issues, the characteristics of the territory and the possibility of obtaining financial means.
115

Studie revitalizace vybraného úseku Anšovského potoka, cca km 5,1 - 6,8

Moučková, Andrea January 2017 (has links)
This master thesis focuses on the study of revitalization of a selected part of the Anšovský potok. It summarizes the knowledge and options of revitalization, the actual state of the water flow, its vegetation and its limits and other natural conditions of the studied area. The final draft is based on these information, financial and areal circumstances of the village Šanov, that requested this study, and limiting factors of the studied area (irrigation system). The draft of revitalization is largely solved by slopes form of riparian edges, sometimes these forms are completed by small wooden damming in watercourse or extension of stream bed. These forms of watercourse should improve retention of water and ecological stability in studied area. The thesis forms full featured basic revitalization plan of the Anšovský potok for the village Šanov.
116

Studie návrhu malých vodních nádrží v k.ú. Držková, na lokalitě II.

Synakievicz, Petr January 2017 (has links)
This diploma thesis is focused on the study of small water reservoir in Držková. Projekted small water reservoir should withold water in landscape, improve biodiversity and serve as aesthetic landscape component. Basis for this study is colection of information about geology, soil condition, hydrology, climate, flora, fauna, anthropogenic impacts and historical use of area. Part of this thesis is also analysis of soil samples. Project of small water reservoir was processed with respect of functional and aesthetical views acording to norm ČSN 75 2410 Small water reservoir.
117

Modelování jakosti vody ve vodovodní síti / Modeling of water quality in the water supply network

Dukát, Petr January 2022 (has links)
This thesis looks at water quality modelling in the water network, focusing on water age. The initial part of the work identifies the factors that lead to an increase in water age in water supply networks. The theoretical part of the work presents the mathematical relationships and logistical steps that software tools apply to simulate water quality indicators in a water supply network. In the practical part of the work, a hydraulic model of a water distribution system with a total length of 302,1 km was constructed. Measurement campaign was carried out to calibrate and verify created hydraulic model. Using this hydraulic model, water age for existing and possible scenarios was simulated. The results of the work have revealed parts of the water supply network containing high water age and are intended to encourage the progressive water distribution systems management philosophy.
118

Vyhodnocení účinnosti odstraňování pesticidů na rekonstruované úpravně vody / Evaluation of effectiveness removing pesticides of reconstructed water treatment plant

Kovačíková, Kristýna January 2018 (has links)
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.
119

Optimalizace tlakových poměrů ve vodovodních distribučních systémech / Optimisation of pressure condition in water supply systems

Sucháček, Tomáš Unknown Date (has links)
This thesis is focused on the optimization of pressure conditions in the water supply network. There is a deep theoretical and critical search of the state of the art and there are fields where there is an insufficient field of knowledge, the so-called "knowledge gap". Experiments are proposed here to determine the dependence of water consumption on pressure conditions. There is a description of experiments and way how it was carried out, which were carried out on the water connection, in the pressure zone and in the laboratory on the hydraulic loop. There is proposed a methodology of experimental determination of the mathematical dependence of water consumption on pressure so that it can be used for optimization problems, where consumption is considered as an optimization criterion. The results of individual experiments are evaluated and a critical discussion of the achieved results is carried out. Finally, the achieved results are compared with the values found in a deep literature search.
120

Měření malých odběrů na vodovodních přípojkách / Measurements of small flow in water service connections

Stehlíková, Veronika January 2013 (has links)
In the first part of this thesis the basic information about the losses of water and their reporting are described. There are presented the means and methods of reducing water losses and their suitability for use. Finally, general information about water meters are presented and the UFR device is briefly described. The second part of the thesis is devoted to testing water meter and UFR device on specific water connection in a family house. The thesis resulted in the author's general recommendations for owners and operators of water supply networks.

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