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Optimization of full-scale denitrifying bioreactor design
Novotná, Klára ; Kriška-Dunajský, Michal (referee) ; Malá, Jitka (advisor)
By leaching from agricultural areas, high concentrations of nitrates enter rivers and groundwater. Denitrifying bioreactors are one of the possibilities to reduce pollution intake into water. The aim of this thesis is to optimize design of a full-scale denitrifying bioreactor in the Czech Republic. In the theoretical part, the denitrification process and the technology of denitrifying bioreactors are characterized. Furthermore, existing methodological documents dealing with their design are presented and the influence of design parameters on the performance of the bioreactor is described. In the practical part of the thesis, a denitrifying bioreactor is designed near the village of Němčice in the South Moravian Region. For this purpose, based on the already existing methodology of Hrich et al. (2018), an optimized methodology for the design of denitrifying bioreactor parameters was developed using the knowledge from the theoretical part. For a target flow rate of 17.4 l.s-1, a bioreactor with a 1:1 aspect ratio, a trapezoidal cross-section in both directions and a 422 m3 woodchip volume was designed. The bioreactor occupies 0,05 % of the drained area.
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The study of modern treatment wetland for the Hlína village
Komendová, Denisa ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
This thesis deals with the design of a modern constructed wetland for wastewater treatment for the Hlína village, Brno – venkov district (320 PE). Constructed wetlands are an alternative technology for wastewater treatment. In Czech Republic this technology often encounters a lot of problems arising from wrong design or improper operation. This problems cause insufficient cleaning efficiency, mainly in removing ammonia nitrogen. It is necessary to design the constructed wetland differently, thus make them a competitive against other waste-water treatment technologies, and ensure a higher cleaning efficiency mainly of ammonia nitrogen. The thesis is based on findings from exploratory and operating objects as results from cooperation with Institute of landscape water management. There are a new solutions and designs applied in this project, including several utility models. The first part consists of literature research, which summarizes basic knowledge on constructed wetlands for wastewater treatment. The result of the second part of the thesis is designed sewage treatment system, which comprises several serial and parallel connected sewage treatment elements. The aim is to not only eliminate the required pollution by decree law, but also to remove nitrogen and phosphorus. The part of the design is also a wastewater sludge treatment, based on innovated reed-bed systems with wetland vegetation.
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The study of modern treatment wetland for the Hlína village
Komendová, Denisa ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
This thesis deals with the design of a modern constructed wetland for wastewater treatment for the Hlína village, Brno – venkov district (320 PE). Constructed wetlands are an alternative technology for wastewater treatment. In Czech Republic this technology often encounters a lot of problems arising from wrong design or improper operation. This problems cause insufficient cleaning efficiency, mainly in removing ammonia nitrogen. It is necessary to design the constructed wetland differently, thus make them a competitive against other waste-water treatment technologies, and ensure a higher cleaning efficiency mainly of ammonia nitrogen. The thesis is based on findings from exploratory and operating objects as results from cooperation with Institute of landscape water management. There are a new solutions and designs applied in this project, including several utility models. The first part consists of literature research, which summarizes basic knowledge on constructed wetlands for wastewater treatment. The result of the second part of the thesis is designed sewage treatment system, which comprises several serial and parallel connected sewage treatment elements. The aim is to not only eliminate the required pollution by decree law, but also to remove nitrogen and phosphorus. The part of the design is also a wastewater sludge treatment, based on innovated reed-bed systems with wetland vegetation.
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