The diploma thesis investigates the coagulation of nature waters with humic substances and peptides/proteins produced by Microcystis aeruginosa during water treatment process with aluminum coagulants. It was confirmed that the efficiency of coagulation mechanism of humic substances and peptides/proteins strongly depends on the pH value, because pH value is limited factor of a charge properties of peptides/proteins, humic substances and hyrolysis products of coagulants. The optimal pH range for the coagulation of humic substances was 5- 6 and for cyanobacterial peptides/proteins 5-6.5. In both cases a charge neutralisation and an adsorption were dominant mechanism of coagulation. Optimal pH range for the coagulation of humic substances in the presence of cyanobacterial peptides/proteins was identical as well as optimal pH range of humic substances with absence of peptides/proteins (5-6) but the presence of peptides/proteins positively influenced particle coagulation of humic substances, because the optimal concentration of the coagulants decreased to more than half. An interaction between humic substances and peptides/proteins was demonstrated. A positive effect of coagulation was observed in the case of jar tests with absence of coagulants at a very low pH range (<4). Keywords Humic substances; AOM...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:334670 |
| Date | January 2015 |
| Creators | Brabenec, Tomáš |
| Contributors | Pivokonský, Martin, Benešová, Libuše |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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