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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.
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Chemicals for waste water treatment
Doskočilová, Denisa ; Vachovec, Roman (referee) ; Hluštík, Petr (advisor)
The aim of this bachelor thesis is to get the reader acquainted first with the history of wastewater treatment in the Czech Republic and also the legislation that relates to waste water treatment. Furthermore, this work will provide an overview of each part of technological wastewater treatment plants and chemicals that can be used in various cases, including their manufacturers and prices. In the practical part there will be conducted a calculation of the amount of coagulant including its annual costs for WWTP Čebín. This material may be an inspiration for either design offices or water managing companies and also the general public.
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The floating islands technology for wastewater treatment
Kohut, Rafael ; Hyánková, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
Importance of proper water treatment is well described in the European Water Charter. However, considering incessant population growth and role of water as a key raw material in all industries and agriculture, we can say that its availability and quality is endangered. To improve the quality of water and water ecosystems, the strategy of renewal of wetlends is being presented as relevant. Except for natural wetlands there is also a variety of artificial ones, which are trying to simulate because of their treatment conditions. This is one of the main reasons why application of floating wetlands raises a great interest nowadays. In at least seventeen countries all around the world the surveys were conducted to define efficiency of this method for purifying of waters. Despite these efforts, the assesment of the reliable evaluations still remains a large research gap. The purpose of this thesis is to present and describe results of a month´s measurements of efficiency of usage of floating wetlands for refinig of wastewater stabilization pond of root zone wastewater treatment plant in the climatic conditions of the Czech Republic.
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Modelling of the biochemical processes in the constructed treatment wetlands
Pumprlová Němcová, Miroslava ; Hyánková, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
This master's thesis deals with the modeling of biochemical processes in saturated vertical filter (which is often part of constructed treatment wetland) using software HYDRUS 2D and the module Constructed Wetland CW2D. The introductory part of this thesis is the literature research of expertise that are introduce with the theme constructed treatment wetlands and should also provide a basic overview of the mathematical or numerical modeling issue. The last chapter describes the theoretical introduction of software HYDRUS 2D and CW2D module, it is the practical part used to create a numerical l model. The practical part is based on theoretical knowledge and demonstrates the creating process of mathematical model in program HYDRUS 2D, simulating the real biochemical processes on the vertical saturated filter. The model is created in the program HYDRUS 2D CW2D and based on real operated constructed wetland. The thesis describes the calibration and followed verification of this model. The final model can well simulate the real filter behavior and allows user to get information about the output concentrations of waste water emission, such as ammonia nitrogen (N-NH4+) and chemical oxygen demand (COD). The results should in the future contribute to create software intended to draft and layout constructed wetlands.
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The floating islands technology for wastewater treatment
Kohut, Rafael ; Hyánková, Eva (referee) ; Kriška-Dunajský, Michal (advisor)
Importance of proper water treatment is well described in the European Water Charter. However, considering incessant population growth and role of water as a key raw material in all industries and agriculture, we can say that its availability and quality is endangered. To improve the quality of water and water ecosystems, the strategy of renewal of wetlends is being presented as relevant. Except for natural wetlands there is also a variety of artificial ones, which are trying to simulate because of their treatment conditions. This is one of the main reasons why application of floating wetlands raises a great interest nowadays. In at least seventeen countries all around the world the surveys were conducted to define efficiency of this method for purifying of waters. Despite these efforts, the assesment of the reliable evaluations still remains a large research gap. The purpose of this thesis is to present and describe results of a month´s measurements of efficiency of usage of floating wetlands for refinig of wastewater stabilization pond of root zone wastewater treatment plant in the climatic conditions of the Czech Republic.
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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.
|
|
|
Chemicals for waste water treatment
Doskočilová, Denisa ; Vachovec, Roman (referee) ; Hluštík, Petr (advisor)
The aim of this bachelor thesis is to get the reader acquainted first with the history of wastewater treatment in the Czech Republic and also the legislation that relates to waste water treatment. Furthermore, this work will provide an overview of each part of technological wastewater treatment plants and chemicals that can be used in various cases, including their manufacturers and prices. In the practical part there will be conducted a calculation of the amount of coagulant including its annual costs for WWTP Čebín. This material may be an inspiration for either design offices or water managing companies and also the general public.
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The influence of fishery farming intensity on water quality in ponds
KREJČÍ, Filip
The introductory part deals with the history of czech fish farming and there is given further information on selected quality parameters of pond water, which are important and risky in terms of fishery production. The main part of the thesis summarises data from the literature, final reports and RIFCH (The research institute of fish culture and hydrobiology) Vodňany database is processed in a form of tables and graphs for clear presenting of physiochemical properties of pond water, including brief details about the way of fish farming, eventually about other important factors, which could also affect the water quality. The main data source of my thesis were four projects, which dealt with this issue during a relatively long period of time, from the seventies of the last century until the year 2012. The greatest attention was paid to data gained under NAZV QH-82113 project "Careful and effective fish farming with maximal utilization of current trophic potential and keeping of sufficient water quality and fish production" in the years 2008-2012 at experipentals ponds of RIFCH Vodňany. There was a comprehensive set of data gained from semi-intensive conditions, where working multiple times and in a very well comparable and under well documented conditions (size of ponds, water supply, fish farming methods) was possible. Based on some published data and data obtained from VÚRH Vodňany database, it was able to demonstrate a direct influence of the size of initial stocking density on the water quality of ponds (especially the concentration of suspended solids, volume of organic pollutions and the total concentration of a phosphor). Generally, parameters, which often do not comply with legislative requirements, could be described as suspended solids, concentration of oxygen, ammonium, total phosphor and Biochemical oxygen demant (BOD5) and Chemical oxygen demant (CODMn or CODCr) values, whose values are sometimes influenced by factors such as for instance the history of a pond, other than production usage of the pond in the previous period (deponie of waste from livestock production, recreational activities etc.)
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