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The application of mobile analytics for determination of basic parameters of waste water
Herka, Milan ; Leskovjanová, Jana (referee) ; Vávrová, Milada (advisor)
This bachelor thesis is focused on waste waters from two waste water treatment plants and utilization by mobile analytic measurement devices with photometric detection for determination of selected basic indicators of this waste water treatment plants. The theoretical part of this bachelor thesis is described selected basic indicators of waste water and their determination using mobile analytical methods. The experimental section is devoted to sampling of waste water from two wastewater treatment plants and analyzing them using a mobile analyst with spectrophotometric ending with presentation of their results. The conclusion is drawn from a comparison of the two wastewater treatment plants, compared the effectiveness of wastewater treatment and discussed the results and perform their interpretation.
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Aggregation reactions of chitosan in drinking water treatment
Leskovjanová, Jana ; Mega, Jaroslav (referee) ; Dolejš, Petr (advisor)
The diploma thesis deals with treatment of surface waters containing humic substances. The most often used method of surface water treatment is coagulation with subsequent separation of aggregates. In this study, only perikinetic coagulation phase was studied. It is the phase when aggregates are formed by the Brownian motion only, i.e. without mixing. Separation of the formed aggregates was made by centrifugation. Coagulation tests were made under the laboratory conditions with model humic water. Humic substances were added from a concentrate, which was taken from a natural peatbog. The influence of temperature on the coagulation process was studied, ranging from 5 to 22 °C. Chitosan (natural biopolymer) was used as coagulant. In present, it is not used in Czech water treatment practice yet. No effect of temperature was observed when chitosan was used as coagulant. Influence of temperature was also studied with the use of aluminium and ferrous sulphates, which are used in common praxis as coagulation reagents. Influence of the temperature was observed and is in agreement with previously reported data of pilot-plant experiments by other researchers. Spectroscopic methods were used to evaluate the coagulation efficiency and determine residual concentration of aluminium and ferrous coagulant. Chemical oxygen demand (COD) was determined for optimal doses. At first, coagulation tests were made under the laboratory temperature. This tests determined optimal aggregation time and optimal coagulant dose under low temperature. Afterwards, all coagulants used were compared at given temperatures.
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Aggregation reactions of chitosan in drinking water treatment
Leskovjanová, Jana ; Mega, Jaroslav (referee) ; Dolejš, Petr (advisor)
The diploma thesis deals with treatment of surface waters containing humic substances. The most often used method of surface water treatment is coagulation with subsequent separation of aggregates. In this study, only perikinetic coagulation phase was studied. It is the phase when aggregates are formed by the Brownian motion only, i.e. without mixing. Separation of the formed aggregates was made by centrifugation. Coagulation tests were made under the laboratory conditions with model humic water. Humic substances were added from a concentrate, which was taken from a natural peatbog. The influence of temperature on the coagulation process was studied, ranging from 5 to 22 °C. Chitosan (natural biopolymer) was used as coagulant. In present, it is not used in Czech water treatment practice yet. No effect of temperature was observed when chitosan was used as coagulant. Influence of temperature was also studied with the use of aluminium and ferrous sulphates, which are used in common praxis as coagulation reagents. Influence of the temperature was observed and is in agreement with previously reported data of pilot-plant experiments by other researchers. Spectroscopic methods were used to evaluate the coagulation efficiency and determine residual concentration of aluminium and ferrous coagulant. Chemical oxygen demand (COD) was determined for optimal doses. At first, coagulation tests were made under the laboratory temperature. This tests determined optimal aggregation time and optimal coagulant dose under low temperature. Afterwards, all coagulants used were compared at given temperatures.
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The application of mobile analytics for determination of basic parameters of waste water
Herka, Milan ; Leskovjanová, Jana (referee) ; Vávrová, Milada (advisor)
This bachelor thesis is focused on waste waters from two waste water treatment plants and utilization by mobile analytic measurement devices with photometric detection for determination of selected basic indicators of this waste water treatment plants. The theoretical part of this bachelor thesis is described selected basic indicators of waste water and their determination using mobile analytical methods. The experimental section is devoted to sampling of waste water from two wastewater treatment plants and analyzing them using a mobile analyst with spectrophotometric ending with presentation of their results. The conclusion is drawn from a comparison of the two wastewater treatment plants, compared the effectiveness of wastewater treatment and discussed the results and perform their interpretation.
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