|
|
The impact of oxidation processes on AOM coagulation
Titov, Ivan ; Načeradská, Jana (advisor) ; Novotná, Kateřina (referee)
Due to anthropogenic impact, surface water sources are subject to intensive growth of phytoplankton communities. This poses a problem for water treatment, not only because water contains a large number of algae cells, but also because of the high concentrations of algal organic matter (AOM). These substances are characterized by low removability during the conventional water treatment process by coagulation, and therefore the increase in AOM removability is currently being researched. Oxidation pretreatment before coagulation is one of the methods that increase the effectiveness of algae and its excreted matter's removability. This work researches the influence of oxidation treatment on AOM removability by coagulation, and on treated water quality. The literary research has shown that pre-oxidation is rather ambiguous in terms of AOM coagulation. From one point of view, with the correct calibration of operation conditions, a right choice of oxidation process and the optimum oxidant dosage it is possible to achieve an effectiveness increase of partial AOM removal (e.g. cyanotoxins, taste and odour compounds and low molecular weight compounds with the help of mineralization). Pre-oxidation, however, can impair AOM coagulation by transforming high molecular weight compounds into low molecular weight...
|
guest ::
