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Redukcia organických látok v sedimentoch za využitia bakteriálne - enzymatických zmesí
Voltemar, Erik
Accumulation of sediments in fishponds is a serious problem for today's aquaculture. High economical, organizational and time-consuming requirements are often the limit factor for many fish farmers. One of the available solutions has recently emerged bacterial-enzymatic mixtures, which thanks to modified bacteria cultures, have been able to reduce organic matter from sediment and improve overall physical and chemical water parameters. The aim of this diploma thesis was to verify the effect of the bacterial - enzymatic mixture PTP plus in laboratory and field conditions. For the laboratory experiment, was chosen a method with different concentrations of the PTP plus, under the controlled conditions of the glass containers. However, the results of the laboratory test did not confirmed significant effect of this bioenzymatic mixture on the reduction of the organic component of the sediment nor on the changes in the physical and chemical parameters of the water. But the influence at the visual properties of the water was confirmed in container with several times higher dose. Three small ponds near Bohuslavice near Konice, with a total area of approximately 2.5 hectares were chosen for the field experiment. The results of the field experiment also did not confirm the significant effect of the bio-enzymatic blend on the physical and chemical parameters of the water in the monitored localities. However, in the lowest location of the fishpond cascade, BOH I, was recorded slight reduction of sediment organic component.
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Vliv vypouštění oteplených vod na makrozoobentos malého toku
Voltemar, Erik
Bachelor thesis is focused on the theme: Effects of discharge of heated water to macrozoobentos of small stream. The aim of this thesis was to develop literature search on the impact of thermal pollution on aquatic ecosystems and temperature tolerance of aquatic invertebrates. For purposes of practical studies were selected four streams in the vicinity of nuclear power plant Dukovany. For complex results were streams observed during the autumn 2013 and spring 2014. At affected Skryjský stream were selected four sampling sites SP0-SP3 for objective monitoring. Locations LIP, HER and LUHY, were not directly affected by the warmed wastewater from nuclear powerplant and serve as comparison sites. At all locations were conducted multi habitat samplings by method PERLA. At the same time they were measured basic physical and chemical parameters and collected samples for determination of basic chemical parameters. From results was determined abundance, taxonomic composition, diversity and functional structure of water macroinvertebrates. At the same time were also evaluated differences in the composition of communities in influenced and reference streams. Results shows that the heated water from the nuclear powerplant have a significant impact on reducing makrozoobentos at Skryjský stream. Due to high temperature and conductivity of waste waters in autum 2013 and spring 2014 were abundance and taxonomic composition at Skryjský stream significantly reduced. At locations LUHY, LIP and HER were not identified adverse effects of the discharge of heated water from nuclear powerplant.
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