|
|
Methodology for removing dust particles from the surface of paper, collagen materials and textiles using the TEA CO2 laser.
Mašková, Ludmila ; Jandová, Věra ; Vávrová, P. ; Součková, M. ; Neoralová, J. ; Novotná, D. ; Fajgar, Radek ; Smolík, Jiří ; Křížová, T. ; Kocová, K.
The aim of this methodology was to develop a set of procedures and recommendations for cleaning materials frequently represented in library collections, using which it will be possible to use pulse infrared TEA CO2 laser to remove dust particles from their surface. The basic requirement is to effectively remove surface contamination without damaging the treated material. For this purpose, a threshold irradiation intensity is established at which the ablation of the surface dirt begins and a threshold irradiation intensity at which the degradation of the library materials. The result is an effective and safe alternative to existing cleaning methods. Furthermore, the aim was to compare the results of this type of treatment of library materials with traditional mechanical cleaning procedures and thus analyse the possible potential of the new method.\n\n
|
|
|
Optimization of method for evaluation ETICS dirtiness
Gabriel, Jindřich ; Žák,, Antonín (referee) ; Žižková, Nikol (advisor)
This diploma thesis deals with the issue of adhesion of pollution to the final surface treatments of the ETICS system. The theoretical part deals with important factors and processes that affect the degree of adhesion of pollution. The practical part of the diploma thesis follows the diploma thesis of Ing. Jakub Krejčík. Optimization of test methods for simulation of artificial pollution on tested samples was proposed. These samples were then evaluated in the laboratory and also compared with plasters that were exposed to real pollution from the natural environment.
|
|
|
Design of a filter unit for waste gas cleaning
Volánka, Lukáš ; Wegschmied, Roman (referee) ; Jecha, David (advisor)
This bachelor's thesis focuses on the design of the filtration unit and on particulate matter, or PM, which is still a significant contributor to air pollution. The first chapter describes the basic properties of these pollutants and their influence on the design of the separator. The next chapter briefly discusses the current legislation in the Czech Republic dealing with emission and air pollution limits. In the third chapter, which is also the last of the theoretical part of the thesis, the individual methods of removal of PMs are presented and explained. The practical part follows, mainly devoted to the design of the filtration unit for the given case, which ends with the measurement of emissions and a brief evaluation of the results.
|
|
|
Měření emisí zápachu a tuhých znečišťujících látek z intenzivního chovu drůbeže
BELKA, Daniel
As agricultural production grows, the focus is on improving air quality, which affects not only residents around farms, but also climate change on a global scale. This thesis deals with the measurement of particulate pollutants and odor emissions in intensive poultry farming. The measurements were carried out at the Farma U Lesa in Sudoměřice u Bechyně in the spring and autumn of 2018. The production specific emission of odorous substances into the air was evaluated using dynamic olfactometry according to ČSN EN 13 725, which ranged from 0.01 to 0 according to the fattening cycle phase, 3 OUE. Ks-1. s-1. Compared to the BREF reference document, which lists emission odor values from 0.032 to 0.7 OUE. Ks-1. s-1 the measured values on the farm Mr. Šonky came out very low. Dust particles of PM10 fraction were measured according to the ČSN EN 12 341 methodology for the measurement of dust particles and the production specific emission of PM10 particles was found, which during the whole fattening cycle was measured to a maximum of 0.0025 kg. Ks-1.year-1. The measurement results were compared with the BREF reference document, where the maximum permissible production of solid pollutants of this fraction from 0.004 to 0.025 kg. Ks-1.year-1. In comparing the measured dust emission values with the BREF, the production of harmful emissions was very low.
|
|
|
Porovnání koncentrace tuhých znečišťujících látek uvnitř stáje v rozdílných technologiích velkochovů drůbeže
ŠONKA, Jan
Intensive poultry farming releases contaminated gases, odors, microorganisms and large concentrations of dust particles. Dust particles have a negative effect on the health of humans and animals. Dangerous particles with a diameter of less than or equal to 4 m, which can travel to the gas exchange area of the human respiratory system, pose a great health risk. The aim of this thesis is to measure PM10 dust particles in intensive poultry farms depending on the age of the chickens. Another goal is to compare the results between farms and compare them with the values shown in Table 5.15 on page 157 of document Final TWG meeting for review of the IRPP (Integrated Pollution Prevention and Control) BREF (Reference Document on Best Available Techniques). The measurements were carried out at the farm Alas a.s. in Hartmanice and at the farm Farma u lesa a.s. in Sudoměřice u Bechyně.
|
|
|
Porovnání koncentrace emisí tuhých znečišťujících látek z rozdílných technologií velkochovu drůbeže
FARA, Radek
Topic of this thesis is comparsion of emission concetration of solid pollutants in intensive poultry farming with different technologies. Measurement was done in cage system and two alternative poultry housing systems in company International poultry testing based in Ústrašice. For measurement of dust particles was used measurement device DUSTTRAK II 8530, own measurement has been done continuously for 24 hours with record every 3s. Dustiness was tracked in size fraction PM10. This dust particles can negatively influence health of employees and reared poultry. By measuring and following evaluation was found, that lowest value of dust particles was achieved in cage housing system. Considering health protection of employees and requirements for poultry wellfare is necessary keep dustiness of stable enviroment on lowest level.
|
|
|
Emissions of solid pollutants
Strnad, Ondřej ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
The thesis deals with issue and properties of solid particles of anthropogenic origin. It describes the principles and technologies for removing them from the flue gas flow and avoid-ing leakage into the atmosphere. It focuses on types of separators, especially mechanical sepa-rators. The work includes an experimental part involving obtaining data characterizing the cyclone separator.
|
|
|
PM Exposure in Climbing Gyms: Case study of two climbing walls in Prague
Bartošová, Nikola ; Bendl, Jan (advisor) ; Makeš, Otakar (referee)
This thesis deals with the issue of high exposure of dust particles PM10, PM2.5 a PM1 in two specific climbing gyms in Prague. The source of these particles is linked to the use of magnesia alba that the climbers use to dry up the skin of their hands. The thesis analyzes the expected correlation between the dust particles concentration and the current number of visitors of the climbing gym. The dust particles are proven to have a negative effect on the health of individuals. The dust particles measured in this thesis are able to penetrate the respiratory tract. The size segregated aerosol was measured using DustTrak DRX. It is a laser nephelometer. In one of the gyms, a gravimetric analysis was performed, using a Harvard impactor that measures the PM10 concentration. All measurements were performed within the period of 20.4.2016 -5.2.2017. In the climbing center Mammut, the PM10 exposure was measured at 0,125 - 0,167 mg*m-3 , which could quadruple in the most frequented time periods. The climbing gym SmíchOFF measured the maximum levels of PM10 at 0,368 - 0,901 mg*m-3 . Both climbing centers exceeded the average daily imission limits for PM10 and PM2.5. From the health perspective, it is recommended to prevent such high exposure levels or lower the concentrations in the climbing gyms by suitable...
|
|
| |
|
|
Posouzení faktorů ovlivňujících koncentraci prachových částic při lisování píce
ŠŤASTNÝ, Vladislav
The objective of this diploma thesis is to assess the factors affecting the concentration of dust particles during forage pressing. For this purpose, five presses for square bales and five presses for round bales were selected. They were harvesting different kinds of straw. Thanks to measurement using an aerosol monitor, the concentration of dust particles during the harvest was detected. The measured values were evaluated and the amount of concentration of the dust particles between the square and round bale presses was compared. There were also set the methodological steps of the measurement procedure.
|
guest ::
