|
|
Evaluation of treatment efficiency of selected constructed wetlands
Houška, Vojtěch ; Vymazal, Jan (advisor) ; Dvořáková Březinová, Tereza (referee)
Constructed wetlands represent a suitable alternative for wastewater treatment nowadays. They are irreplaceable in Czech Republic as well as worldwide. Initially, they were not accepted unanimously by the water authorities due to the simple technological design.
In this Bachelor thesis, the main types constructed wetlands for wastewater treatment, their general principle of cleaning and suitable wetland vegetation are described. Also, the main components of pollution in the waste water are evaluated in the thesis. The thesis provides an evaluation of treatment performance of five constructed wetlands, namely Spálené Poříčí, Olší nad Oslavou, Rudíkov, Osová Bitýška and Křoví. This thesis is focused on the evaluation of the long-term treatment efficiency in terms of BOD5, COD, suspended solids, ammonia nitrogen and phosphorus. The most results show a very good level of wastewater treatment of surveyed constructed wetlands.
|
|
|
The influence of number of visitors on water quality in a public natural swimming pool
Dragoun, Jan ; Vymazal, Jan (advisor) ; Dvořáková Březinová, Tereza (referee)
Abstract The thesis is divided into theoretical and practical parts. The theoretical part describes the habitat, plants that provide clean water, as well as the revitalization of the area devoted to the description of the former wastewater treatment plant in the cadastral Radotín and the legislation subject to the available sources. The practical part describes the operation of the habitat, comparing the number of visitors to the habitat quality of water. In this thesis we evaluate the results of laboratory tests which were evaluated by decree limits no. 238/2011 Sb., on the hygienic requirements for swimming pools, saunas and hygiene limits of sand in sandboxes outdoor playgrounds.
|
|
|
Design of a constructed wetlands for wastewater treatment at Měcholupy
Müller, Jan ; Vymazal, Jan (advisor) ; Dvořáková Březinová, Tereza (referee)
The first part of my thesis is focused on wetlands. I explained the concept of wetlands, made their description with focusing on artificial wetlands. Furthermore, this part of thesis described processes in wetlands, which are used for wastewater treatment. In the thesis are describe constructed wetlands used for wastewater treatment, parts of wetlands and most commonly used vegetation.
Next part of my bachelor thesis is focuses on project of constructed wetland used for wastewater treatment. This project will be processed for village Měcholupy, which is located on northwest of Czech Republic in district Louny. I made description of village focused on natural condition in village, description of wastewater and sewer system in village. Then will be described design of specific constructed wetland, decription of their individual parts, calculate size of this parts and evaluation of advantages and disadvantages of wastewater treatment in constructed wetland. Annex contain several photographs capturing place for possible construction and financial budget of the project.
|
|
|
Zinc in environment and methods of remediation
Landová, Ludmila ; Michálková, Zuzana (advisor) ; Dvořáková Březinová, Tereza (referee)
Zinc and other heavy metals cause negative effects on both the environment and human health. Depending on the concentration of zinc in the ecosystem, it can produce unwanted effects in the environment and on the human. Due to pollution, vegetation may not be able to grow on the contaminated soils, which can further result in strong soil erosion. For these reasons, remediation of soils contaminated with risk elements is necessary to minimize their impact on ecosystems. This bachelor thesis describes properties, utilization, stability and behavior of zinc and other risk elements in the environment, including the removal from contaminated soils using remediation methods.
The experimental part aims at the influence of AMO and Sm-AMO on stability of zinc and risk elements in contaminated soil together with the adsorption kinetics of zinc onto these two materials. The results detected high efficiency of Sm-AMO on sorption of zinc and lead in the test kintetics of adsorption. For most heavy metals
having a similar effect, when Sm-AMO is as efficient as AMO, any cases, it has a higher efficiency.
|
guest ::
