National Repository of Grey Literature 100 records found  1 - 10nextend  jump to record: Search took 0.02 seconds. 
Removal of antibiotics from wastewater by advanced oxidation technologies
Macsek, Tomáš ; Rusník,, Igor (referee) ; Bodík,, Igor (referee) ; Hlavínek, Petr (advisor)
Antibiotics are substances that inhibit the growth of microorganisms and are widely used in modern medicine. High consumption of antibiotics correlates with their elevated occurence in sewage systems, from where they are further released into the environment. The threat of their occurrence in the environment is in triggering the formation and spread of antibiotic resistance. This thesis focuses on the removal of selected antibiotics and partly on the antibiotic resistance from wastewater by advanced oxidation processes (AOPs). AOPs are based on the creation of highly reactive hydroxyl radicals, which are able to oxidize even highly persistent substances. The thesis focuses on the purification of effluents from municipal wastewater treatment plants (WWTP), which are identified as the main source of pharmaceutical pollution in the environment, by AOPs mainly based on ozonation. These processes were tested under laboratory conditions on model water as well as under real conditions as the tertiary stage of the treatment at Brno-Modřice WWTP under various operating states. As the results of the performed experiments show, it could be concluded that the studied AOPs are capable of effective degradation of studied antibiotics from the treated medium. Under real conditions, the antibiotics sulfamethoxazole, trimethoprim, azithromycin and clarithromycin were monitored. Output concentrations in each operational state were achieved to be below the limit of detection for all four antibiotics. The application of AOPs based on ozonation as the tertiary step of the treatment also had a positive effect on the reduction of microbial contamination and antibiotic resistance. Within the pilot plant experiments, a reduction of up to 4 orders of magnitude of E.coli, coliform microorganisms and a reduction of their resistant strains in the range of 1.4 - 4.0 logs were observed, compared to the effluent from the WWTP.
Preprocessing of sewage sludge for pyrolysis process
Ševčík, Jan ; Rusník,, Igor (referee) ; Bodík,, Igor (referee) ; Hlavínek, Petr (advisor)
The concept of sludge management at the level of sludge treating technology of sewage treatment plants, as well as at national, continental or world level, requires fundamental improvement in the interest of sustainable development. Sewage sludge production is continuously increasing. Sewage sludge contains a number of pollutants but also a significant renewable resource for material transformation and / or energy recovery. Sewage sludge is composed of an inorganic mineral part and organic components. Its organic part is a source of energy and nutrients, but also contains harmful pollutants for exapmple heavy metals. However, there are technologies that offer the possibility of neutralizing pollutants while using other sludge components in terms of recycling energy, nutrients and other attractive sludge components. The mentioned technologies include mainly thermal methods of sewage sludge treatment and one of them is pyrolysis. Thessis focuses on sewage sludge prepartation for pyrolysis process, which includes mixing with additives and peletization of prepared mixture for purposes of agricultural or energetical utilisation. Technology for material transformation and energy utilization of sewage sludge, in particular the mentioned pyrolysis or torrefaction, require an insignificant degree of detailed research in order to expand it in the field of sludge management. Indeed, it is not only research that will enable direct correct use of this technology in practice. The results of such research are the basis for the drafting of the relevant legislation, which will subsequently enable the deployment of pyrolysis technologies in practice.
Design of WWTP at locality with extreme demands on quality of treated wastewater
Krupica, Radek ; Vachovec, Roman (referee) ; Hlavínek, Petr (advisor)
This diploma thesis deals with the wastewater treatment technologies by means of which high quality of the treated wastewater is attained, especially with regard to removing nutrients. The introduction of the thesis contains, among others, descriptions of the reserves in the Czech Republic where it is extremely important to insist on the highest quality of the discharged wastewaters. Then follows a summary of the quality requirements on the discharged wastewaters as stipulated in the legislation. Furthermore, I analyse the impact of the nutrients – nitrogen and phosphorus – on the environment and the principles of their removal from the wastewaters. In the next section I concentrate on the technological processes by means of which the required quality of the wastewater is achieved. The conclusion includes a list of technologies used as the tertiary wastewater treatments with emphasis on membrane technologies. The second part of my thesis is a study of a project of a wastewater treatment plant (WWTP) with membrane technology for the villages of Sloup and Šošůvka located within the protected landscape area of Moravian Karst.
Technical-economic evaluation of selected technologies WWTP´s up to 2000 PE
Kříž, Miloslav ; Raček,, Jakub (referee) ; Hlavínek, Petr (advisor)
The thesis deals with the technical and economic comparison of technologies for wastewater treatment plants 50-2000 PE based on the processing of selected data ownership and operational records (VÚME, VÚPE) for the years 2013-2015 provided by the Ministry of Agriculture of the Czech Republic. The first section presents an overview of the most important laws and standards of the Czech Republic for water management, describes the characteristics of municipalities to 2,000 inhabitants and operation of wastewater treatment plants up to 2000 PE.The second part evaluates the influence of different types of drainage systems on the quality of wastewater and the efficiency of wastewater treatment. Furthermore, this section deals with the influence of technical and economic comparison of the influence of sludge management concept.In the last part I work with studies and generators for calculating the cost of sludge treatment in larger WWTP, possibly for sludge dewatering and storage.
Optimalization of WWTP operation
Ondráček, Martin ; Kubík,, Jiří (referee) ; Hlavínek, Petr (advisor)
The diploma thesis is focused on the optimalitzation of an operation on SWTP and improvement of figures of drainge from sewage water treatment plants. Possible options of the optimalization are also included. The second part of the thesis deals with the optimalization of operation of the concrete sewage water treatment plant using the WEST programme.
Harvesting of materials from wastewater and sludge
Boubínová, Marie ; Chorazy, Tomáš (referee) ; Hlavínek, Petr (advisor)
This bachelor thesis is focused on the issue of recycling raw materials from wastewater and sewage sludge with emphasis on phosphorus. The first part of the thesis deals with the problems associated with resources of phosphorus, the use of the legislative and recycling of phosphorus. Then, physico-chemical and biological methods of phosphorus recycling from wastewater and products of their further processing at WWTPs are discussed. Phosphorus recycling is also described in terms of the circular economy, which is explained at the end of the first part of this thesis. The second part of this thesis is a technical-economic research for a specific WWTP over 50 thousand. PE in the Czech Republic. The available technologies for recycling phosphorus from wastewater, sewage sludge and sewage sludge ash are described alsonhere. Then, the technologies are compared and evaluated.
Problems of aeration dimensioning at WWTP´s.
Šplíchal, David ; Sousedík, Milan (referee) ; Hlavínek, Petr (advisor)
The objective of this work is to compare aeration systems of primarily mechanical and pneumatic aeration, as well as to compare various manufacturers of aeration components in terms of their advantages, positioning in aeration tanks, operation, use, efficiency and energy requirements. The second part is a description of the waste water treatment plant in the town of Česká Třebová and the development of an alternative calculation for the biological part with circulation activation, a circular sedimentation tank and a design for an aeration system in the aeration tank.
Removal of micropollutants from wastewater by adsorbtion.
Trávníček, Jakub ; Macsek, Tomáš (referee) ; Hlavínek, Petr (advisor)
The aim of the thesis is to create a research on the issue of adsorption of micropolutants with a subsequent focus on biochar. The first part therefore deals with the micropolutants themselves, the origin of their formation in wastewater and their negative impact on the health of organisms. It also deals with adsorption technology, discusses its basic knowledge necessary to grasp the topic and describes known adsorbents and their use. It pays special attention to biochar. The second part of the thesis deals with practical filter tests of adsorption abilities of biochar on wastewater from tunnel maintenance and treatment carried out in the laboratory of the AdMaS centre.
Reuse of wastewater in multifunctional buldings
Skřička, Jakub ; Úterský, Michal (referee) ; Hlavínek, Petr (advisor)
This diploma thesis presents reader with current knowledge in the field of gray wastewater reuse. The theoretical part describes the current state of water in the world, thus characterizes wastewater and describes its treatment. Further, this section describes the possibility of obtaining thermal energy from wastewater. At the end of the theoretical part, the reader is presented with some existing buildings in the Czech Republic that use the wastewater re-use technology system. In the following practical part, all the knowledge from the theoretical part are applied for a concrete project of construction of a graywater re-use technology system in the area of Vlněna in Brno city.
Cogeneration unit at the wastewater treatment plant
Hoferková, Lenka ; Hlavínek, Petr (referee) ; Hluštík, Petr (advisor)
Energy management is topical issue and we have to solve this global problem. There is also an option to exploit the renewable energy. The source might be biogas produced during anaerobic sludge stabilization. This bachelor thesis deals with using biogas in cogeneration units at sewage water plant. First section covers the main Czech and EU legislation and regulations in the field of water treatment, sewage sludge treatment and cogeneration. The next section is devoted to production of biogas and possibility of utilization in cogeneration. The thesis divides cogeneration systems and mentions the main parameters such as energy efficient and wattage. Local and European companies are chosen from the fields of manufacturer. The practical part deals with designing of cogeneration unit at sewage water plant Zdar nad Sazavou. According to calculated and measured parameter adequate unit from local manufacturer Tedom is chosen. Moreover, there are other solutions for replacing the engine in the current unit (by Tedom) or general repair (by Motorgas). All options are evaluated from the view of profitable investment. The conclusion is that It would be preferable to replace the engine.

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