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Cleaning effect of unconventional filtration materials
Fialová, Tereza ; Hynánková,, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
Constructed wetlands and the soil filters are water treatment devices using the filter material that in most cases consists of natural river gravel, coarse sand or crushed stone. Master´s thesis deals with the research of cleaning effect of unconventional filtration materials, or more precisely with examination to load real waste water in a filtration column, to prove their ability to be used as an alternative medium that can ensure better cleaning effect. For the research work following metallurgical industry materials were used: fine slag and coarse slag 8-16 mm, materials from the natural character: zeolite, keramzit, a plastic material: PUR-foam. Also the traditional materials of fine gravel and coarse gravel were tested to compare the cleaning efficiency. Both the hydraulic and the cleaning efficiency of all above mentioned materials were tested. The examined hydraulic parameters are particularly porosity, hydraulic conductivity and suspended solids, turbidity and oxidation-reduction potential of both the inflow and outflow of the filter columns were determined. Accredited laboratory set the inflow and outflow of the filter columns BOD5, CODCr, total phosphorus, total nitrogen, nitrite, nitrate, ammonia and dissolved oxygen. By evaluating the results of the measurements it is determined which materials are suitable to be applied in the constructed wetlands and the soil filters. This filtration column was modeled by program HYDRUS and the result was compared with real results.
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Study of plasma activated water influence on soil microorganisms
Lungová, Tereza ; Šimečková,, Jana (referee) ; Krčma, František (advisor)
The bachelor thesis deals with the effects of plasma activated water on microorganisms found in the brown earth sample. The theoretical part is divided into two parts. The first part focuses on the analysis of soil and microorganisms living in it. The second part deals with the general properties of plasma and the formation of plasma-activated water. In the experimental part of this work, plasma-activated water was applied to the leachate of soil microorganisms and also directly to a selected soil sample in various concentrations. Subsequently the effect on the viability of soil microorganisms and the composition of soil microorganisms was observed. Based on the results from the practical part, it was found that plasma-activated water has no significant positive or negative effect on soil microorganisms. For this reason, it will be necessary to focus on specific types of microorganisms in further research.
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Sledování vybraných parametrů čistírenského kalu
Hirschová, Linda
This thesis deals with the evaluation and characterization of sludge parameters relevant to the drying process and subsequent energy recovery. The main parameters monitored are the dry matter of the sludge, the loss on ignition, the calorific value of the primary, thickened and dewatered sludge. Marginally, the paper also deals with the evaluation of pH, conductivity and oxidation-reduction potential. In particular, the characteristic of dewatered sludge entering the drying process is central. The dry matter of the dewatered sludge ranged from 13.5 to 25.7 %. The measured values of the calorific calorific value of the dewatered sludge ranged from 10.2 to 17.9 MJ∙kg-1, an assessment observed a dependency between the loss on ignition and the calorific value of the sludge. The impact of thickening (gravitational, mechanical) and stabilization (aerobic, anaerobic) sludge technology is taken into account in the evaluation. Part of the thesis deals with statistical evaluation of the effects of seasonality on monitored parameters.
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Study of plasma activated water influence on soil microorganisms
Lungová, Tereza ; Šimečková,, Jana (referee) ; Krčma, František (advisor)
The bachelor thesis deals with the effects of plasma activated water on microorganisms found in the brown earth sample. The theoretical part is divided into two parts. The first part focuses on the analysis of soil and microorganisms living in it. The second part deals with the general properties of plasma and the formation of plasma-activated water. In the experimental part of this work, plasma-activated water was applied to the leachate of soil microorganisms and also directly to a selected soil sample in various concentrations. Subsequently the effect on the viability of soil microorganisms and the composition of soil microorganisms was observed. Based on the results from the practical part, it was found that plasma-activated water has no significant positive or negative effect on soil microorganisms. For this reason, it will be necessary to focus on specific types of microorganisms in further research.
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Cleaning effect of unconventional filtration materials
Fialová, Tereza ; Hynánková,, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
Constructed wetlands and the soil filters are water treatment devices using the filter material that in most cases consists of natural river gravel, coarse sand or crushed stone. Master´s thesis deals with the research of cleaning effect of unconventional filtration materials, or more precisely with examination to load real waste water in a filtration column, to prove their ability to be used as an alternative medium that can ensure better cleaning effect. For the research work following metallurgical industry materials were used: fine slag and coarse slag 8-16 mm, materials from the natural character: zeolite, keramzit, a plastic material: PUR-foam. Also the traditional materials of fine gravel and coarse gravel were tested to compare the cleaning efficiency. Both the hydraulic and the cleaning efficiency of all above mentioned materials were tested. The examined hydraulic parameters are particularly porosity, hydraulic conductivity and suspended solids, turbidity and oxidation-reduction potential of both the inflow and outflow of the filter columns were determined. Accredited laboratory set the inflow and outflow of the filter columns BOD5, CODCr, total phosphorus, total nitrogen, nitrite, nitrate, ammonia and dissolved oxygen. By evaluating the results of the measurements it is determined which materials are suitable to be applied in the constructed wetlands and the soil filters. This filtration column was modeled by program HYDRUS and the result was compared with real results.
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