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Biogas digestate as an effective means to improve the physical properties Cambisol
KAŠPAR, Michal
In the submitted diploma thesis the theoretical part is just an overview of basic information concerning anaerobic digestion, and thus about biogas production, principles of its origin, chemical composition, properties and requirements regarding the soil out of which the biogas comes into existence in fermenter biogas stations. The other part of the theoretical section deals with digestate and types of soil since the aim of my thesis is the monitoring of possibilities how to utilize the waste from BGS fermenters, digestate for composting and how to improve physical-chemical properties of heavy soils. It was proved in the experimental thesis itself that the digestate is not organic fertiliser, on the contrary it is weak mineral fertiliser, highly diluted, and it does not fulfil the role of organic fertiliser because its organic substance is too stable. However, it can be successfully used during the digestate application into the compost ? it is earth-friendly and airy substance, it prevents heat leakage and the compost has higher T-value. It is suitable for the application into soil ? not as an organic fertiliser but for the improvement of water-air mode of soils, especially those heavy ones.
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The influence of substrate on performance of biogas palnt
RATAJ, David
In the master thesis the focus is laid on assessment of data and values from particular biogas generation units. For this topic I introduced in particular chapters of the thesis own opinions and experience of various experts. Expert data have been compared with own results gained by testing and evaluation of such received data. In this master thesis further technical parameters for the technology of anaerobic fermentation have been put together as well as information and data about other new technologies for biogas treatment and cleaning. Attention has been paid also to the outlook for using this environmentally friendly and green way of energy harvesting in the future.
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The use of the reactor with sludge cloud and external biomass separator for methane production from the substrate for Biogast Plant
ŽIVNÝ, Jakub
The aim of the study was to compere the reactor with sludge cloud and external separator biomass in different modes. This typ of reactor is principally used in wastewater treatment and in this work was designed for production of biogas from biosmass, commonly used in agricultural biogas plants. The reactor assembly was prepared in the laboratory of the available glass flasks, connected by rubber tubing and mixing pump. The entire device was immersed in a water bath heated thermostat. For the purpose of this work was used samples from biogas Týnec near Dobrovice at Mladoboleslavko. The reaktor was injectable liquid portion, formed after adjusment method IFBB (Integrated Generation of Solid Fuel and Biogas from Biomass). The principle of this method consists in separating the liquid and solid components of biomass. Operation of the reactor was carried out in three stirring models: without stirring, medium stirring, intensive stirring. Further, the operation was compared at 40°C and 53 °C in a mode without stirring. This monitoring is carried abut for five hours. The specimens was taken every hour and after drying to COD (determine chemical oxygen demand), which expresses the degree of degradation of organic matter. The results show that the laboratory devie model stirring does not show. However, the temperature change from 40°C to 53°C showed an increased degradation of organic matter.
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Biogas Plant and its impact on the environment.
MACH, Marek
In my work I try to bring the topic of meaning and operation of biogas plants and their possible noisy burden on the surrounding environment, especially in populated parts of the municipalities in which the biogas plants are located. The theoretical part is focused on all traffic biogas, from their division, despite possible inputs and outputs, and the processes that happen inside the station. The theoretical part also contains noise that can be issued for machinery undisturbed environment. The practical part of this work was to measure the noise emitted by the station at full capacity, and if possible under all operating conditions, such as management of raw materials and export of digestate. From the measured values, we will try to determine if stations do not affect the life of the surrounding communities and their residents.
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The apply digestate at operate of biogas plant agricultural type
ČÁPOVÁ, Aneta
Comparing inputs needed to operate biogas stations, this Bachelor paper focuses on the composition of digestate and on its use in five examined stations. The paper is split into two sections: theoretical and practical. The theoretical section, i.e. a summary of relevant literature, explains the basic concepts and other issues related to the biogas proper, biogas generating stations, substrates and digestates. The practical section deals with experimental data obtained from the five stations. The data were acquired through a questionnaire wherein the stations' operators described their facilities while specifying the parameters; substrates applied; methane yield figures; results of digestate analyses; and their methods of application.
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Production and usage of biogass in South Bohemia
KALINOVÁ, Lenka
The bachelor's thesis deals in particular with comparison of biogas production in individual biogas stations in the South Bohemian Region. In addition, the thesis describes fundamental parameters such as year of commissioning, installed electric output, installed thermal output, input material and employed technologies. Based on the foregoing information, it is possible to conclude that the individual biogas stations have a positive impact not only on the utilization of the produced biogas for energy purposes but also on the environment, waste degradation, reduction of the risk of contamination and acquisition of high-quality fertilizer.
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Using of digestate of agricultural biogas stations
VERNER, Dušan
This work deals with problems of agricultural biogas stations with the focus on using of final product of anaerobic fermentation, digestate, on agricultural soil. It evaluates its fertilizing effect in comparison to industrial fertilizers. The results showed that the fertilizing effect can improve economy of growing plants, however it depends on quality of digestate, constitution of base input material and technology of processing. It is not possible to use digestate anytime, it depends on growing crops and its technology. Nevertheless digestate as a final product of anaerobic fermentation is an interesting fertilizer.
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