Large polycyclic aromatic hydrocarbons with molecular mass exceeding 278 Da are rarely object of study, in spite of the fact that some compounds from this group are proved carcinogens. These compounds belong to the group of persistent organic compounds and they are considered as dangerous environmental contaminants. Diploma thesis is focused on the evaluation of the occurence of large PAHs in technological and waste waters produced in black pitch processing in the DEZA Valašské Meziříčí factory. The method of their analysis based on reversed-phase liquid chromatography with non-aqueous gradient; UV-VIS and fluorescence detection will be used. This method will enable the study of changes of large PAHs distribution at various stages of waste water treatment process.

The aim of this dissertation thesis "Development of electrochemical detector for heavy metal monitoring" was to create sensible sensors for the determination of heavy metals in the aquatic ecosystem and which would be usable for real applications, determination of the content of various metals in waste industrial waters. For the simultaneous determination of Zn(II), Cd(II), Pb(II) and Cu(II), a carbon paste electrode modified with chromium oxide was developed, based on this modification were produced the screen printed electrodes for the simultaneous determination of said metals with good limit of detection. For the usability of printed sensors in situ, a new electrochemical cell design was designed. This proposed cell also facilitates dosing of samples and buffer necessary for electrochemical analysis. Further, for determination of the total chromium content in aqueous solutions, was introduced a new method using a silver film on a glassy carbon electrode. Finally, various methods for waste water treatment from heavy metals have been tested.

This thesis is concerned with verifying the functionality of domestic wastewater treatment plants soaking in the Tišnov region. The theoretical section describes methods of waste water within the houses, their distribution, utilization characteristics. There is also described the technology selected domestic wastewater treatment plants method of operation. There are mentioned legislative provisions relating to wastewater treatment plants discharging to do their groundwater. The work includes hydro-geological description of the site, in which monitored Domestic wastewater treatment plant is located. Within the practical part was to validate the effectiveness of wastewater treatment. Samples of wastewater were regularly for six months removed from individual domestic wastewater treatment plants BAT and analyzed in the laboratory of the Institute of Agricultural, Food and Environmental Engineering Faculty of Agronomy, Mendel University in Brno. Measured parameters determining the quality of wastewater were compared with relevant legislation, the values guaranteed by the manufacturer of the individual household wastewater. Results of the analyzes of waste waters were evaluated interpreted. On the basis of their recommendations was established.

The thesis "Evaluation of the effectiveness of the wastewater treatment plant in Lipník nad Bečvou" compares the effectiveness of wastewater treatment before and after the plant reconstruction. This work is comprised of the theoretical and practical part. The theoretical part applies overview of the water law legislation, sewerage, types of wastewater and concrete methods of wastewater treatment. The practical part is focused on wastewater treatment in the city. Included is the transport of wastewater, description of treatment technology before and after plant reconstruction. Follows the graphical results of wastewater treatment plant load, analytic wastewater checks and effectiveness of the WTP (Wastewater Treatment Plant) in years 2005 and 2015. The results show that the original wastewater treatment technology was, according to compliance with the emission standards, insufficient. For this reason, complete WTP reconstruction followed. From the current WTP results, it is evident that the hydraulic load is at 50 % average, but it is overloaded with the substance. Despite this fact, WTP maintains its high effectiveness in pollution elimination. The levels of pollution on the WTP output do not exceed the values of the emission standards and limits.

The diploma thesis The Evaluation of the effectiveness of the the wastewater treatment plant in Bílovice nad Svitavou compares effectivity of wastewater treatment technology before reconstruction and after it. Literature search is focused on waste water. In this chapter are also described drainage buildings their concept and meaning. Very important part of the thesis is overview of water legislation and sewage contamination indicators and sludge index. Results part of the thesis contains description of Bílovice nad Svitavou municipality. Next chapter is description of the wastewater treatment plant before and after the reconstruction. In this chapter you can find information about sludge index. The most important chapter is an evaluation of results which contains graphical explanation of the level of dirty water. The original wastewater treatment plant was quite advanced but the reconstruction was necessary due to increasing population. The capacity was increased up from 1 250 to 7 750 equivalent residents. Current technology is designed to comply with actual needs of the city and microregion and it is prepared for its future enlargement. The wastewater treatment plant fulfill requirements for minimal concentration levels of pollution in waste water on the outflow to the recipient and does not exceed emission standarts.

Submitted master’s thesis is focused on the study of possibilities of lipids degradation in particular wastewaters originating in food industry or restaurants. The effort is given to the employment of lipolytic activity presenting microorganisms. In the literature review, wastewater treatment with aim on the sludge management and fat separators are described, as a way how to pre-treat these wastewaters. In this part the enzymes lipases of microbial origin are researched from point of view of their production conditions and possible applications. The experimental part is dedicated to the research of optimization of cultivation conditions for lipases production employing selected microorganisms (Bacillus subtilis, Geobacillus thermodenitrificans, G. thermocatenulatus and mixed bacterial culture Thermus and Bacillus) and a commercial formulation (Sany Duo Spezial). Lipases production and growth of microorganisms are determined spectrofotometrically on various concentrations of lipids. Moreover, employing the solid nutrition medium, the effect of detergents onto the Bacillus subtilis culture was assessed, since detergents are generally abundant in this particular wastewaters. As a conclusion, vide supra mentioned microorganisms were characterized according to their abilities to degrade triacylglycerols.

This thesis deals with advanced oxidation processes (AOPs) and it’s use for removal of micropollutants from wastewater. The first chapter explains the need AOPs, water quality, pollution and substances that are present in the water. Further, the first chapter outlines approach of the current legislation to micropollutants. The second chapter explains the theory and principle of operation of AOPs. This chapter is divided into two sections. The first section describes AOPs, which were tested at selected WWTP. In the second section, there are described some other AOPs. The third chapter is a literature retrieval of AOPs dealing with the removal of micropollutants. This chapter is focused on the removal of hormones by AOPs using ozone-based AOPs. The fourth chapter describes the actual testing of selected AOPs. The chapter describes selected WWTP, pilot-scale AOP unit and test results. In the last chapter there is designed and described full-scale AOP tertiary unit for removing of micropollutants. The last chapter also contains economic analysis of the proposed tertiary unit.

The task of this master thesis was assessment of the possibility of intensification of biological ponds, which are used for wastewater treatment, and subsequent application of selected systems to the existing wastewater treatment plant in the village Krumsin in the district Prostejov, including economic assessment. In the first part of the master thesis, I worked up the available options for the intensification of biological ponds. In the practical part of the thesis it was prepared a report of the current state of the wastewater treatment plant that serving as a basis for the design of intensification, which is also processed in the practical part. For the proposed variants of intensification was also processed economic assessment.

Czech Republic is called roof of the Europe, several rivers rise here and many of them flow away and continue to other countries. That's why I find, that’s extremely important to manage out water sources properly and carefully, because for example the weather has a huge impact on our limited sources and can affect them especially in a dry periods. These issues can be improved by finding a use for used water, good storm water management as well as using greywater. In my diploma thesis, I'll be mainly focused on an overall water management in an ordinary family house. It has two parts as theoretical part and practical part. The theoretical part is then split into another three parts. The first part covers a storm water management, the second is about waste water management. The third explains greywater management. In practical part of my diploma thesis, there's my study of not disposing rain water into a drain with other waste water, but making both waters useful. In this my particular subject in village called Plesnice, is projected a waste water treatment plant. Treated water will be accumulate together with rain water. Accumulated water will be used for irrigation. For a waste water treatment is projected a constructed wetland with vertical flow (down flow reed beds) and facility for sludge management. This is example of extensive technology. Irrigation system consists of storage tank with mechanical pre-treatment and pump valve shaft, sprinklers for lawns, drip irrigation decorative surfaces and everything is controlled by a control unit. Thanks to irrigation and rainwater remains in effect, which is important for local microclimate and save drinking water. This study is an example of that in water management is not necessarily a need for global action, but you can start with individuals and individual houses, which in total could have a significant effect on water retention in the landscape and to slow down and reduce the peak flow in rivers.

This diploma thesis deals with sound water management and is divided into theoretical and practical part. The theoretical part is divided into three main chapters. The first part focuses on rainwater, its quality characteristics and utilization. The second chapter focuses on the management of waste water, its properties, the amount of waste water and natural ways of wastewater treatment. The last chapter is devoted to the gray waters and their utilization. The practical part focuses on the study of the draft comprehensive management of sewage and rainwater in the village Pařezov district Domažlice. It focuses on wastewater treatment using constructed wetlands, using rainwater for irrigation and infiltration of the remaining water.