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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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Optimization of Fe2(SO4)3 dosage at selected branched WWTPs in Prague
Kadlecová, Petra ; Tesařová, Eva (advisor) ; Kalíková, Květa (referee)
This bachelor thesis focuses on the optimization of the dosage of the precipitant Fe2(SO4)3 in selected wastewater treatment plant branches. Three such branches, connected to the integrated sewerage system and equipped for stormwater management practices, were observed. The goal of this thesis was to limit the dosage of iron sulfate during periods of heavy rainfall. Restriction in the dosing was implemented by deactivating the iron sulfate pump at times when the hydrodynamic vortex separator was in use. Annual savings for the individual wastewater treatment plants amount to the range of 1,48, 3,68 and 4,01%.
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The Vertical Constructed Treatment Wetland for Village to 500 PE
Opletal, Jan ; Hyánková, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
This thesis aims to propose a design of a vertical flow constructed wetland for a village up to 500 PE. The project is conducted for the town of Vlachova Lhota (Zlín district), and two alternatives are presented here. The first is based on mechanical pre-treatment and an intermittently loaded vertical flow constructed wetland. This alternative meets the state limits of wastewater discharge, which was demonstrated by a calibrated model of the effectiveness of an intermittently loaded vertical flow constructed wetland. This model was designed by Ing. Mirka Němcová using Hydrus software. The second alternative includes, in addition to the first design, tertiary sewage treatment. Tertiary treatment was proposed as an effective solution to removing all monitored pollutants in wastewater discharge. A combination of technologies of tertiary sewage treatment has not been put into practice, therefore the outcome and the effectiveness of the process can only be estimated. Tertiary sewage treatment would function as the first operational research unit, which could produce further findings in the field of sewage treatment using nature-based methods.
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