|
|
The Use of Recycled Building Materials for Wastewater Treatment
Zedník, Ondřej ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
The constantly tightening wastewater treatment legislation require high-quality runoff from small-scale producers of pollution who are typically represented by small municipalities up to 500 inhabitants or decentralized parts of larger municipalities. Small municipalities are faced with high investment-intensity associated with the acquisition of new wastewater treatment plant. After several years of development, today natural technologies of wastewater treatment are in competition with mechanical-biological treatment plants. Natural technologies can even achieve better results than popular biological treatment plants. However, natural technology does not eliminate the main investment limit connected with the acquisition of wastewater treatment plant. If there was cheaper solution connected with using alternative filter materials (in our case recycled construction and demolition waste), small municipalities could take constructed wetland without large subsides. At the same time, the use of recycled construction and demolition wastes will lead to benefits in the field of sustainable urban development and replacement of non-renewable materials. Despite these benefits, recycled aggregates have never been considered as alternative filter materials for natural wastewater treatment plants. For that reason, the aim of diploma thesis is to assess the possibility of applying recycled aggregates for wastewater treatment which will include evaluation of real trial operation.
|
|
|
Removal of phosphorous at constructed treatment wetlands
Štěpáníků, Alex ; Mrvová, Michaela (referee) ; Pumprlová Němcová, Miroslava (advisor)
This Bachelor thesis deals with issues of the removal of phosphorus in constructed (treatment) wetland. The main purpose of this thesis is to make literature review with focus on different technology of the removal of phosphorus from small community waste water treatment plants and evaluate their appropriateness for usage in constructed (treatment) wetlands. Sub-chapters deal with the topic of constructed (treatment) wetlands with a focus on the removal of phosphorus in broader context. The result of this thesis is recommendation for specific technological solutions, that could be used in constructed (treatment) wetlands. Part of this thesis is practical example of the design of selected technology for the removal of phosphorus for a real constructed (treatment) wetland.
|
|
|
Research of the Multistage Constructed Treatment Wetlands Technology
Chaloupka, Ondřej ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
The ways of purifying waste water produced by human society are nowadays a great deal. With the increasing pressure on sustainable construction, technology using principles close to natural processes are at the forefront. Treatment wetlands have been in use for almost 30 years and thanks mainly to developments abroad, they prove they are a suitable option for smaller producers of pollution. When designing a treatment wetland for municipalities with a larger amount of inhabitants, it is necessary to modify the proposal in order to eliminate all types of pollution. This thesis therefore compares three sewage treatment plants with a multistage filtration system. Comparing the achieved parameters will be beneficial for defining the rules for optimal design of these types of wastewater treatment plant.
|
|
|
Monitoring and evaluation the first year of operation of the vertical flow filter in constructed wetland
Vláčil, Lukáš ; Kriška-Dunajský, Michal (referee) ; Pumprlová Němcová, Miroslava (advisor)
This Bachelor’s thesis evaluates the one-year operation of a new type of vertical filter bed in the constructed wetland in Dražovice. This evaluation will be used to compare the efficiency of treatment – ammonia nitrogen removal – in the Dražovice constructed wetland before reconstruction (the installation of the vertical filter) and after the reconstruction. The introductory part deals with the theoretical research summarizing expert information and learnings, in order to provide insight into the issue of constructed wetlands and vertical filters in particular. Individual technological installations are described and the operating principle of constructed wetland technology is explained. The practical part of the thesis describes and evaluates the treatment efficiency of the vertical filter installed in the Dražovice constructed wetland in 2016. The results evaluation focuses on two indicators: N-NH4+ and CODCr in the period between January 2017 and May 2018.
|
|
|
The Study of Intensification of the Constructed Treatment Wetland for the Village of Machová
Zedník, Ondřej ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
The village Machová (650 inhabitants) operates a combined sewage system which leads to a treatment wetland. This wastewater treatment plant faces similar problems like most of treatment wetlands from the turn of the last century - it has a low efficiency of the removal of ammonia nitrogen N-NH4 + which causes a negative impact on the watercourses and the environment. The study deals with the technical modification of the operating line which would eliminate the abovementioned problems and solves the sludge treatment in treatment plant. Population growth in the village connected with the construction of sanitary sewer will cause high concentrations of pollution in the inflow. The proposed modification uses the latest scientific knowledge and proven technologies which were created by the Institute of Landscape Water Management. These technologies will secure the low effluent concentrations of monitored parameters not only today but also in case the population of the village will grow.
|
|
|
The study of realization of the constructed treatment wetland for Jankovice village
Ujházy, Adriana ; Mrvová, Michaela (referee) ; Pumprlová Němcová, Miroslava (advisor)
This bachelor thesis deals with a study of the constructed wetland in the village Jankovice (Holesov), where they has not had a treatment plant yet. The first part of bachelor thesis is focused on informations and research studies, introducing to problems of constructed wetlands. In this part the the principles of technology are explained and the individual treatment stages in wetland are described. The second part of thesis describes the design study of the wastewater treatment plant in Jankovice u Holesova. It includes information about the village and a proposal of the individual treatment processes. The design study assumes two variants of the constructed treatment wetland location, at the end is recommended one of them. According to the current standard, the individual technological stages of wetland are pre-designed, financial costs are also estimated. The whole solution is drawn in the situation and completed by a height technical drawing. The aim of this thesis is to propose a properly functioning root waste water treatment plant for the municipality of up to 500 PE.
|
|
|
The Study of Vertical Filter with Vegetation for Village Bezděčí u Trnávky
Kacetlová, Klára ; Přecechtěl, Karel (referee) ; Kriška-Dunajský, Michal (advisor)
This bachelor thesis follows up modern vertical flow constructed wetland for wastewater treatment for Bezděčí u Trnávky village in the Czech republic. This village has 250 habitants. Technology of construted wetlands is alternative method of wastewater treatment. There are a lot of problems with this technology in the Czech republic. These problems are results from wrong design or improper operation. It causes insufficient cleaning efficiency. The worst cleaning efficiency is in removing ammonia nitrogen. To right functioning of constructed wetland is necessary change the approach to design of the constructed wetland. The thesis is based on results of the right designed constructed wetland in Dražovice village and on working technology in Austria as well. All thesis is devided into two parts. The first part consists of literature research, which summarises basic knowledge related to constructed wetland of wastewater treatment. The second part includes two options of designing constructed wetland. The first one consists of two wastewater treatment elements and the second one includes three elements. The main aim of this technology is not only to eliminate the required pollution by decree law, but also to remove nitrogen and phosphorus. The wastewater sludge treatment is based on innovated reed-bed system with wetland vegetation.
|
|
| |
|
|
Study of Constructed Treatment Wetland Reconstruction for Dražovice Village
Roupec, Ladislav ; Pumprlová Němcová, Miroslava (referee) ; Kriška-Dunajský, Michal (advisor)
The constructed wetlands, which have been being created in the Czech Republic since early 90s, are designed so they do not allow successful removal of ammonia nitrogen. Almost all of these 300 registered constructed wetlands suffer from the colmatage which leads to the lowest effectiveness of treatment in nearly all parameters. The main effort of the Institute of landscape water management is to get rid of bad reputation and to clarify the reason that leads to unsatisfactory conditions of constructed wetlands. The diploma thesis focuses on the selected constructed wetland in Dražovice (850 EO), which removes ammonia nitrogen with the effect just below the limit values in the long term. The pressure of the Morava river basin and Department of environment (Building Authority in Bučovice) has led to the necessity of taking measures leading to the increase of treatment efficiency especially ammonia nitrogen. The diploma thesis includes both, actual project documentation concentrating on the adjustment of watercourse to nitrify ammonia nitrogen, and effective choice of suitable filtration material supported by testing method in situ. The practical part of the thesis deals with the implementation of the technical solution according to the project documentation. The adjustment of the constructed wetland is now nearly before completion. Last adjustments will be taking place during the spring 2017, the final inspection as well as the evaluation of the reconstruction will take place at the end of this year.
|
|
|
Solutions and variability of vertical filters
Roupec, Ladislav ; Hyánková, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
The bachelor thesis deals with innovative technical solution of vertical trickle filter systems, which are categorized into the category of natural ways thow to clean water. The actual vertical filters for root cleaners are currently experiencing a boom thanks to the MPO project with the working title Biostream, within which are vertical root systems tested on root cleaner in the village of Kotenčice (involved in pilot conditions). The results show an increased removal of ammonia nitrogen and high efficiency in the elimination of organic pollution BSK5 and CHSKCr. However, the practice may in the future require even higher efficiency that can be solved by small technical innovations and modifications. In connection with the forced aeration of vertical filters is elaborated the methodological part of the thesis, the final result of the work is several regression equations using which it is possible to determine the input of oxygen into the system at a given input parameters (filter size, water flow, air flow, etc.). The results are very useful for a scientific branch because there is not so much available literature for this topic.
|
guest ::
