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Monitoring of changes of drinking water quality during accumulation and distribution
Vaňková, Jitka ; Dolejš, Petr (referee) ; Mega, Jaroslav (advisor)
Theoretical part of the diploma thesis purveys information on drinking water and quality requirements, changes of drinking water quality during distribution and accumulation caused by disinfection, chemical processes, corrosion of constructional materials, incrusting solids, biofilms, nitrification of ammonia nitrogen, sediments in pipelines, elution of harmful matter. Attention was given to drinking water quality indicators which are associated with changes in drinking water distribution systems. In experimental part are studied changes of drinking water quality during distribution on the basis of selected drinking water quality indicators. There is specifically chemical oxygen demand, concentration of iron, manganese, ammonia ions, nitrites, nitrates, chloroform and chlorine. For periodical monitoring were selected suitable locality within the framework of Brno distribution system; for illustration were taken water samples from distribution systems of drinking water treatment plants Švařec, Vír, Štítary and Mostiště. For selected methods of analytical determination of above mentioned drinking water quality indicators are presented their characteristics. Obtained information on drinking water quality is mentioned in tabular and graphical form.
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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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