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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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Sustainability of Projects Focusing on Access to Water in Ethiopia
Foltýnová, Veronika ; Novotný, Josef (advisor) ; Peštová, Michaela (referee)
This thesis aims to address factors affecting the sustainability of development projects focusing on water supply in Ethiopia. The thesis identifies main dimensions of sustainability and examines factors within them and their impact on long-term functionality of the studied interventions. The research focuses on the (un)sustainability of the selected water supply projects in Sidama and Alaba, Ethiopia. Ten water supply systems constructed under three projects supported from the Czech development cooperation were examined. Data were collected through semi-structured interviews and direct observations of analyzed water systems. The interviews were conducted with experts, representatives of the implementing organization, representatives of water institutions in Ethiopia (Woreda Water Offices and WASH Committees) and recipients of the interventions, i.e. users of the water supply systems. This was supplemented by the analysis of project documentation. Field research in Ethiopia was conducted in November 2020 and lasted four weeks. The results showed ongoing long-term functionality with only minor problems in the majority of studied systems. One system was nonfunctional at the time of visit and two systems were facing serious problems. The sustainability of studied systems was affected mainly by...
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Removal of microplastics from water
Skalníková, Andrea ; Pivokonský, Martin (advisor) ; Čermáková, Lenka (referee)
The aim of this diploma thesis is to investigate the removability of microplastsic particles with different shapes (fragments, sphers, fibers) by standard water treatment process, such as coagulation, filtration and sedimentation. For the experimental purpose in this study, polyvinyl chloride with a size ≤ 50 μm and a density of 1.38 g/cm3 , was used as a representative of microplastics. The coagulation has been provided by ferric sulphate in pH range 5, 6, 7 and 8 and at a diferent dose of coagulant 20, 40, and 60 mg/l. The study results has shown, that the coagulation efficiency of polyvinyl chloride particles were affected by pH. The optimal value of pH has been 7 at the coagulant dose of 20, 40 and 60 mg/l. The presence of polyvinyl chloride shown a positive effect on coagulation. It has been reflected in a reduction of the residuals of iron concentration after coagulation, at pH 5-7. Solution with polyvinyl chloride contained 1,2 mg/l dissolved organic carbon. After fitlration the concentration decreased up to 70 % at pH 7 at dose of coagulant 40 and 60 mg/l. Experiments have shown that polyvinyl chloride particles are capable of faster sedimentation after coagulation. The flocs formed during coagulation interacted effectively with the polyvinyl chloride particles and facilitate their removal...
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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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