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Sewage sludge - the present and the future
Žerava, Zdeněk ; Houdková, Lucie (referee) ; Boráň, Jaroslav (advisor)
Possibilities of sewage sludge utilization are synoptically described in this bachelor thesis. Main types of sludge utilization in Czech Republic are mentioned as well. This work is focused especially on factors influencing the choice of methods of sludge disposing and on comparison of sludge disposing in Czech Republic and another EU countries.
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Design of Sludge Disintegration Unit
Brtna, Filip ; Beňo, Zdeněk (referee) ; Boráň, Jaroslav (advisor)
The target of the first part of this diploma thesis is focused on the problems relating to the sludge production from the wastewater treatment plant and subsequent sludge treatment. In this thesis complete process of the wastewater treatment is described. Predominantingly is described the process in digestion tanks, therefore stabilization process, whereas the paper is focused on sludge pre-treatment (disintegration) of waste activated sludge before stabilization. The second part of this thesis is focused on the design of the disintegration unit for the wastewater treatment sludge in assist with experimental data. According to measured and fixed parameters the unfired pressure vessel has been designed. On the vessel has been further realized the strength calculation, the heat balance and the economic balance.
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Alternative Biomass Fuels Properties
Krejčiřík, Jiří ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
This bachelor thesis follows up attributes of alternative fuels made from biomass and burning them in home combustion equipment with taking into account the process of creating emissions of solid pollutants. There can be found definition of solid alternative fuels with descripition of how are they made and also their attributes as fuels in the first chapter of this thesis. In the second part can be found description of burning alternative fuels made from biomass with taking into account the process of creating emissions. The third chapter of this bachelor thesis is focused on experimental testing of fuel attributes of alternative fuels made from biomass. There is also practical test of creating emissions with focus on creating solid pollutants in this part.
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Technical economical valuation of WWTP´s sludge treatment
Petřík, Jiří ; Raček,, Jakub (referee) ; Hlavínek, Petr (advisor)
This diploma thesis is focused on sludge management of wastewater treatment plant. The research work contains an overview of the related legislation, outlines the problems of sludge treatment in the Czech Republic and also deals with technologies and technical solutions that are related to the processing and treatment of sewage sludge for various size categories of wastewater treatment plants. The second part is devoted to the technical and economic assessment of wastewater treatment plants in the category from 500 EO to 2 000 EO. The assessment is based on real data provided by WWTP operators and focuses on electricity consumption, investment costs and operating costs. Part of the diploma thesis is also determining the rentability of drainage equipment, and studying the convenience of using mobile or stationary drainage equipment.
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Vliv alternativních zdrojů bílkovin v rybím krmivu na růst ryb a rostlin ve dvousmyčkovém akvaponickém systému
NIKL, Ondřej
The objective of this thesis was to evaluate the production efficiency of feeds which were designed with the intention of developing a special aquaponic feed. Further, to evaluate the content of nutrients in water, sludge and nutrient solutions and their influence on plant growth and finally suggest possible modifications to the feed composition. Aquaponic feed should respect nutritional requirements of fishes and plants, not put burden on the environment by not used nutrients and with regards to sustainability, use alternative sources of protein instead of marine fish meal. Because of that, three experimental isoprotein and isocaloric feeds were proposed. Feed A contained conventional ingredients including marine fish meal. Feed B used freshwater fish meal and exclusively plant proteins not regarding its origin. Feed C was made of sustainable and local sources of protein. The experiment was conducted in the aquaponic hall of Faculty of Fisheries and Protection of Waters, University of South Bohemia. As experimental material was used Nile tilapia (Oreochromis niloticus) and lettuce (Lactuca sativa). Feed B shown similar values of all production indicators as conventional feed A. Weight of fishes in system A after thirteen weeks increased by 143,68 % and in system B by 136,56 %. Weight of fishes in system B was at the end of experiment inconclusively lower by 4,08 %. Feed conversion ratio (FCR) of feed B (1,92?0,10) was inconclusively higher by 8,47 % against FCR of feed A (1,77?0,13). Average weight of aerial parts of plants growing in nutrient solution created from mineralized sludge gathered from system B, supplemented with missing nutrients reached value 221,8?33,9 g after four weeks. That was inconclusively more by 44,21 % than average weight of plants grown in special hydroponic solution and by 8,62 % more than weight of plants grown in enriched solution gathered from system A. Experimentally it was proven that in aquaponic feeds it is possible to substitute marine fish meal by alternative source of protein and using these feeds ensure an effective nutrition for fish and plants in a two-loop aquaponic system.
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Technical economical valuation of WWTP´s sludge treatment
Petřík, Jiří ; Raček,, Jakub (referee) ; Hlavínek, Petr (advisor)
This diploma thesis is focused on sludge management of wastewater treatment plant. The research work contains an overview of the related legislation, outlines the problems of sludge treatment in the Czech Republic and also deals with technologies and technical solutions that are related to the processing and treatment of sewage sludge for various size categories of wastewater treatment plants. The second part is devoted to the technical and economic assessment of wastewater treatment plants in the category from 500 EO to 2 000 EO. The assessment is based on real data provided by WWTP operators and focuses on electricity consumption, investment costs and operating costs. Part of the diploma thesis is also determining the rentability of drainage equipment, and studying the convenience of using mobile or stationary drainage equipment.
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Alternative Biomass Fuels Properties
Krejčiřík, Jiří ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
This bachelor thesis follows up attributes of alternative fuels made from biomass and burning them in home combustion equipment with taking into account the process of creating emissions of solid pollutants. There can be found definition of solid alternative fuels with descripition of how are they made and also their attributes as fuels in the first chapter of this thesis. In the second part can be found description of burning alternative fuels made from biomass with taking into account the process of creating emissions. The third chapter of this bachelor thesis is focused on experimental testing of fuel attributes of alternative fuels made from biomass. There is also practical test of creating emissions with focus on creating solid pollutants in this part.
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Analýza odpadů, vznikajících v rámci provozu sladoven
Přikryl, Jan
The objective of this thesis is to carry out the analysis of wastes arising during the run of malthouse located in Hodonice nearby Znojmo. The analysis is focused on muds and screenings coming out of the sewage treatment plant of this malthouse. This malthouse is operated by the company Sladovny Soufflet CR, a.s. whose share in the annual malt production in Czech Republic makes around 60 %. The first part of the thesis describes technological steps in malt production, basic legislative requirements for sewage treatments plants and working processes and techniques in cleaning of liquid waste. The second half delivers insight into methodology of analyses performed and evaluates their results. In conclusion of this thesis there`re deduced measures how to process liquid waste in a more efficient way.
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Hygienizace kalů v čistírnách odpadních vod
Mach, Pavel
The Dissertation thesis compares the methods of hygienisation of wastewater treatment plants sludges with respect to meeting legislative requirements of conditions for using treated sludges on agricultural land. The thesis draws a comparison between the method of stabilisation and hygienisation of the sludge through the autothermal aerobic thermophilic stabilisation (AATS) by pure oxygen and the method of sludge hygienisation by pasteurization. The objective of the thesis is to evaluate the above-mentioned methods of hygienisation of wastewater treatment plant sludges, to compare their efficiency and a level of secondary contamination by indicator microorganisms before their subsequent treatment.
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