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Impact of type of housing on waste recycling - case study of the Písek region
VACKOVÁ, Jana
My thesis aims to clarify issues regarding waste sorting and the willingness of the population according to the type of their residence to sort waste. The theoretical part focuses on waste management in the Czech Republic and neighbouring countries. The main objective was to describe the waste management in the Písek region. I concentrated on the description of particular technologies, especially recycling. Another chapter describes the relationship of the population to waste sorting, as human behaviour and lifestyle are the main causes of environmental damage. Recycling may be the right way to decrease the negative impact of human society on the environment. The practical part presents the results of the quantitative research conducted by means of a questionnaire. According to the respondents´ answers, I was able to conclude the differences of waste separation between the town and village. From the total of 247 respondents, 80 % sort the waste, 16 % sometimes sort it, and 4 % never do so. The categories of respondents differ in the amount of waste sorting, however, the difference is not statistically significant (Chi Squared test = 2,075; s. v. = 4; p = 0,722). Depending on the type of residence, the highest percentage 87 % - of waste sorting occurs in the housing estate category and zero percentage of respondents in this category never sorts. I was also concerned with the difference in the degree of sorting of individual commodities depending on the type of residence. It is significant only in the amount of sorting hazardous waste (Chi Squared test = 18,5; s. v. = 4; p = 0,001). In the case of other commodities, the type of residence does not affect the amount of their separation. It is obvious that the type of build-up area affects the way of life of the population and thus the amount of waste they produce. In general, the degree of diversity in respondents´ waste sorting depends on their education, experience, life priorities and public awareness of waste management.
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High-Volume Municipal Solid Waste Incineration Bottom Ash Concrete.
Reiterman, P. ; Holčapek, O. ; Krausová, A. ; Šyc, Michal ; Keppert, M.
About 50% of Municipal Solid Waste is incinerated (MSWI) in Europe what represent ca. 50 Mt/a of MSWI bottom ash (BA). Bottom ash contains several marketable components (iron scrap, non-ferrous metals, glass) which can by separated from the main BA stream and placed on the market with secondary sources. The resting material is, by its composition and properties, similar to natural aggregates and can be used in this way. The influence of metals separation form BA on its behaviour in concrete was tested by using BA from Praha Malešice Waste-to-Energy Plant. Particle size fractions 4/8 and 8/16 mm of this BA can be used as aggregates in concrete up to 50 vol. % of given fraction without any significant loss of concrete strength. The combination of valuable component separation form BA and recycling of the rest portion as aggregates feature promising way of BA management reducing the amount of BA to be landfilled to minimum.
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The study of utilization of raw materials based on glass recyclate
Bajer, Tomáš ; Čermák, Jan (referee) ; Šťastník, Stanislav (advisor)
Presented work deals with the problem of solar glass waste recycling. In theoretical part recent EU regulation regarding waste management is presented. Different ways of PV panels recycling are explained as well as raw materials for glass production are listed. Differences between regular and solar glass is explained. In experimental part different recipes using solar glass waste and polymer binders are presented. Grindability was tested on specimen tiles. Potential of solar glass waste for manufacturing products with acoustic properties was examined.
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Toy or Toxic Waste?: Our study is a continuation of the investigations of IPEN and Arnika that found octaBDE, decaBDE and HBCD in Rubik's cubes, children's toys and hair accessories, i.e., products that were not treated with these substances but made of recycled plastic.
Petrlík, Jindřich ; Straková, Jitka
Our study is a continuation of the investigations of IPEN and Arnika that found octaBDE, decaBDE and HBCD in Rubik's cubes, children's toys and hair accessories, i.e., products that were not treated with these substances but made of recycled plastic. The previous study indicates that banned brominated flame retardants commonly found in hazardous electronic and building waste are recycled into new products where they were not present historically. We conducted additional sampling to further examine whether toxic substances are being recycled into children’s toys on the Czech market.
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Health Risk Assessment of Selected Factors of Working Environment and Occupational Health Services in the Field of Recycling and Processing of Secondary Raw Materials and Waste
DVOŘÁKOVÁ, Sára
This thesis deals with the evaluation of health risks of chosen factors in the work environment and medical services in the recycling and secondary raw materials and waste processing field. The goal of the thesis is to chart companies which handle recycling and secondary raw materials and waste processing in the South Bohemian Region, to find out the risk factors that go in hand with this work and to determine in which work category these workers belong. I have determined three hypotheses within the research. Hypothesis 1: The nature of the work activities does not correspond with suggested risks. Hypothesis 2: The workers are not equipped with tools in accordance with detected risks. Hypothesis 3: The workers of companies dealing with recycling and secondary raw materials and waste processing do not attend the necessary medical check-ups. The thesis consists of a theoretical and a practical part. In the theoretical part I have introduced the risk factors connected to recycling and secondary raw materials and waste processing. I have covered the problematics of medical services for the employees, occupational disease and the protection of health from unfavorable effects of the work environment. To reach my goal, I have utilized quantitative research methods. For data collecting I have used anonymous surveys in the area of the South Bohemian Region. In the survey, I have adressed scrapyards, composting plants, collection yards and waste dumps. The collected data were processed by the Microsoft Excel program. The obtained data may be used as an information source for students as well as for employers and employees in companies handling secondary raw materials and waste processing.
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Possibilities of recycling in the sand aerated concrete technology
Kostura, Patrik ; Kulísek, Karel (referee) ; Drochytka, Rostislav (advisor)
Waste of the aerated concrete is generated directly from the production of aerated concrete or from the constructions. The options for handling aerated concrete are two. We can deal with it as a light aggregate or as a material for the production of aerated concrete. Based on the physico-mechanical properties, the decision was made that aerated concrete is suitable as a light aggregate. The brash as a light aggregate was tested in two variants of the softness (0-2 mm, 0.25-2 mm). Evaluation of the brash as a suitable material for the production of aerated concrete consisted of the creation of laboratory-autoclaved composites. The brash was tested in different ratios (10%, 20%, 30%, 40%), two variants of fineness (0-2 mm, 0-0.25 mm) and two formulations (lime base, fluffy fly ash). Silicon sand was replaced. Based on physico-mechanical properties and microstructural analysis (XRD, SEM), was found that aerated concrete as a material is suitable for 40% sand substitution.
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The Use of Alternative Sources in the Building Industry
Dvořák, Jakub ; Vymazal, Tomáš (referee) ; Žižková, Nikol (advisor)
This bachelor thesis is focused on the use of waste as alternative raw materials in construction industry. The first part is dedicated to the historical development of waste management, to the valid legislation in the Czech Republic in 2017 and outlines the distribution of waste according to various criteria. The information about waste production and waste management is processed in the form of tables and graphs. The more extensive second part of the thesis uses theoretical knowledge in the field of waste management and on the base of the Waste Separation Catalog is composed a list of waste materials which can be used in construction industry. Further are described the possibilities of suitable waste utilization at production and also mentioned some particular construction products with their features.
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Elemental analysis of the flat display devices for urban mining
Štípek, Radek ; Strnad, Ladislav (advisor) ; Mihaljevič, Martin (referee)
aaaaaRare earth elements (Sc, Y and group 15 lanthanides) and their compounds currently have significant practical use in metallurgy, glass industry, as highly active catalysts for the production of so-called. NiMH batteries, alloys for the manufacture of permanent magnets and e.g. moderators rods in the nuclear energy, but above all they have an irreplaceable role in modern electronics for phosphors TV screens, CRT earlier today, PDP and LCD monitors and displays, tablets, mobile phones etc., which give them a high-quality picture and sound. Unlike most base and precious metals are concentrated in the conquerable ore deposits, occur in the form of compounds as part of mixed minerals in the rarely economically exploitable concentrations, a mining and processing is costly and negative impacts on the environment, paradoxically towards the title but their overall content in the crust is relatively high, the average concentration in the range of about 150 to 220 ppm. The main world producer of REE, China, in 2010, significantly reduced exports by 40 %, making prices of some REE increased up to 1500 % during the month. Demand for REE is growing, so often talks about the recycling of valuable materials back into production, as called. "Urban mining", ie "urban mining", thereby reducing the amount of...
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Landfilling legislation
Černý, David ; Sobotka, Michal (advisor) ; Humlíčková, Petra (referee)
Abstract AJ The goal of this thesis is to thoroughly chart the problem of waste management in Czech Republic and the European Union and to outline legal and economic situation in waste treatment and in its alternatives. This thesis deals with different types of landfills, their technical aspects and methods of depositing waste. The thesis also tries to point out material and energetic use of waste before landfilling. Recycling is considered to be important because it decreases the amount of waste stored in landfills. Composting and anaerobic digestion are the other methods of disposal. The thesis also describes the possibilities of usage of the landfill gasses with the help of cogeneration units. The thesis refers to current level of waste landfilling in the Czech Republic and in other countries of the European Union. Key words: waste management, landfilling, landfills, waste sorting, material recovery from waste, recycling, composting, energy recovery from waste, incineration,
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