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Options removal of micropollutants with water treatment processes
Zdražilová, Alena ; Bogáňová, Ida (referee) ; Biela, Renata (advisor)
This diploma thesis is engaged in problems of micropollutants removal by water treatment process. The first part aims to define single micropollutants, possibilities of their removal in laboratory and micropollutants removal on water treatment plant. In the second part, there is data evaluation of water analyses on factual water treatment plant. Also there is description and evaluation of experiment, which aims to pesticide removal from river by using filtration across granulated active carbon.
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Removal of metabolites of pesticides from groundwater during treatment for drinking water
Vaněk, Michal ; Repková, Martina (referee) ; Král,, Pavel (advisor)
The diploma thesis deals with the evaluation of the efficiency of pesticide metabolite removal at a water treatment plant. In the introduction, a research on the issue of pesticide substances in raw water, their removal during the treatment to drinking water and the basic classification of pesticides is made. The thesis includes an introduction to the issues at a specific water treatment plant, technological changes at the water treatment plant, tabulated and graphically processed measured values of pesticide metabolites in groundwater source and drinking water. In the conclusion of the thesis, individual pesticide metabolites are discussed, their sorption on granular activated carbon is assessed and conclusions are drawn.
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Monitoring of pesticides in source of water treatment Hrdibořice and possibility of their removal
Bouchalová, Zuzana ; Svoboda,, Miroslav (referee) ; Biela, Renata (advisor)
The thesis discusses possible ways to reduce or completely eliminate pesticide compounds from drinking water that are produced at a water treatment plant Hrdibořice. The work is divided into theoretical and practical parts. The theoretical part lists kinds of pesticides that occur in water, how they are reduced or eliminated. Furthermore, this section describes the existing water treatment technologies at the Central Committee Hrdibořice, including water sources. In the practical part, pilot tests on two types of filters models with filtering bed of granular activated carbon (hereinafter GAU) were carried out. On the basis of information obtained from the literature and on findings from the pilot tests, designs of technological equipment for pesticide removal from drinking water at water treatment Hrdiborice were carried out. Next, cost estimates for the proposed variant solutions including operating costs were suggested.
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Micropollutants in water resources and ways of their elimination
Lukášová, Daniela ; Látal,, Milan (referee) ; Biela, Renata (advisor)
The diploma thesis deals with micro-fuels in drinking water sources and their subsequent removal. In the thesis mainly pesticides and pharmaceuticals are described. The reader is first introduced to the most common pesticides occurring in water and their consumption. Drugs are described in a similar context. In addition, there are practical studies on the occurrence, degradation and removal of micro-pollutants from water. The final thesis is a laboratory experiment dealing with the removal of salicylic acid from water by filtration through the filtration material Bayoxide E33 and activated carbon. The thesis describes the procedure and results of the experiment.
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Pharmaceuticals in drinking water sources and possibility of their removal
Lukášová, Daniela ; Talašová, Lucie (referee) ; Biela, Renata (advisor)
Bachelor thesis deals with drugs in drinking water sources, and possibility of their removal. In the first part of the bachelor thesis describes the sources of pharmaceuticals in surface waters, which can be a source for drinking water. Below are described the concentration of drugs in the water and then the reader is familiar with the most frequently occurring drugs in the waters and their consumption. The second part of the bachelor thesis is devoted to Czech and foreign projects that deal with drugs in the drinking water. The third part describes the options for the removal of water by using various medicines water processes. At the conclusion of the work of the design laboratory experiment is described for removing the drug from the water.
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Adsorption of pesticides onto granular activated carbon in water treatment process
Kopecká, Ivana ; Hnaťuková, Petra (advisor) ; Pivokonský, Martin (referee)
The diploma thesis is aimed at adsorption processes during the removal of pesticides onto granular activated carbon (GAC) in the process of drinking water treatment. Adsorption onto GAC represents an efficient method for pesticides removal. High adsorption efficiency can be significantly reduced due to the occurrence of natural organic matter (NOM) in raw water, which involves AOM (Algal Organic Matter) produced by phytoplankton. Analogous to NOM, AOM probably affects adsorption of pesticides by two different mechanisms - a direct site competition and pore blockage effect, in dependence on the different molecular weight of particular AOM fractions. Equilibrium batch and kinetic adsorption experiments were performed using two types of GAC (Norit 1240 and Filtrasorb 400) and two pesticides (terbuthylazine and alachlor). In order to examine the effect of AOM on adsorption of pesticides, raw GAC and GAC preloaded by AOM were used. The effect of pH on the competitive adsorption of AOM was also evaluated. A solid phase extraction (SPE) method and gas chromatography with electron capture detection (GC-ECD) were used to determine pesticides in water samples. AOM was characterized using fractionation onto sorptive resins. The representation of apparent molecular weights of AOM proteins was determined by...
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Ověření účinnosti filtrace přes granulové uhlí při odstraňování mikropolutantů na vybraných úpravnách pitné vody
MARTANOVÁ, Andrea
My bachelor thesis is called Verification of filtration efficiency through granular carbon in removal of micropollutants in selected drinking water treatment plants. The aim of this work was to determine the efficiency of granular activated carbon (GAC) filters in connection with other technological processes (especially with ozonisation). Passive samplers (POCISs) were installed at the drinking water treatment plants in Pilsen and in Plav during spring and autumn 2019. Moreover, grab water samples were taken in the first and last day of POCIS deployment. Concentrations of selected pesticides and pharmaceuticals were determined by a liquid chromatography with a tandem mass spectrometry in a laboratory LECHB Vodňany. In particular, the results of the analysis showed the occurrence of telmisartan and metabolites of metazachlor (metazachlor ESA and metazachlor OA) and metolachlor (metolachlor ESA) in raw water. Telmisartan was reduced in final water unlike metazachlor ESA, which seemed to be problematic in final water in the spring campaign at drinking water treatment plant in Pilsen. The results also confirmed the occurrence of atrazine and its metabolites in raw water. Furthermore, elevated concentrations of some compounds were found before the GAC filters than in the inlet to the drinking water treatment plants. The concentrations of these compounds were lower in the outlet than before GAU filters. The removal efficiency was calculated not only for all compounds together but also for each compound individually. Evaluation showed higher total removal efficiency at drinking water treatment plant in Pilsen, where the removal efficiency was 99 % in the autumn campaign, while in the spring campaign removal efficiency was only 61 %. The reason for this difference could be deactivated ozonisation during the spring campaign. This result demonstrates possibility of high removal efficiency of micropollutants for ozonisation followed by GAC filtration. Removal efficiency for drinking water treatment plant Plav was set as 46 % in the spring campaign and 67 % in the autumn campaign. The reason for these low removal efficiencies may be missing of ozonisation in treatment technology at this drinking water treatment plant.
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Removal of metabolites of pesticides from groundwater during treatment for drinking water
Vaněk, Michal ; Repková, Martina (referee) ; Král,, Pavel (advisor)
The diploma thesis deals with the evaluation of the efficiency of pesticide metabolite removal at a water treatment plant. In the introduction, a research on the issue of pesticide substances in raw water, their removal during the treatment to drinking water and the basic classification of pesticides is made. The thesis includes an introduction to the issues at a specific water treatment plant, technological changes at the water treatment plant, tabulated and graphically processed measured values of pesticide metabolites in groundwater source and drinking water. In the conclusion of the thesis, individual pesticide metabolites are discussed, their sorption on granular activated carbon is assessed and conclusions are drawn.
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Adsorption of low molecular weight algal organic matter onto activated carbon during water treatment
Fialová, Kateřina ; Pivokonský, Martin (advisor) ; Kopecká, Ivana (referee)
This diploma thesis deals with the study of adsorption of low-molecular components of organic substances produced by phytoplankton - AOM (Algal Organic Matter) on AC (Activated Carbon) during drinking water treatment. For the experimental purpose in this thesis, there were used selected amino acids as low molecular substances of AOM that are difficult to remove by conventional water treatment process by coagulation. As adsorbent, there was used a detailed characterized of granulated activated carbon (GAC) - Filtrasorb TL 830 (FTL830) which is intended directly for the purpose of water treatment. There were realizing the equilibrium batch adsorption experiments with three different model amino acids - arginine (Arg), phenylalanine (Phe) and aspartic acid (Asp). There was investigated the efficiency of removing amino acid depending on the solution temperature and pH. Results of the adsorption experiments have shown that the temperature affects the adsorption efficiency. Adsorption is essentially described as an exothermic process but the adsorption of Arg and Phe from an aqueous solution to GAC occurs more efficiently at higher temperatures. It means that the adsorption is the endothermic process. In the case of Arg adsorption, the temperature was found to influence adsorption efficiency less than...
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