Coagulation/flocculation of organic matter in water treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F18%3A00535785" target="_blank" >RIV/67985874:_____/18:00535785 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Coagulation/flocculation of organic matter in water treatment

Popis výsledku v původním jazyce

On the contrary with effect of hydrodynamic conditions on the properties of formed aggregates (Jarvis et al., 2005), the effect of the type of impurity (humic matter, AOM, clay minerals etc.), impurity properties (size of molecules, functional groups, charge density, hydrophobicity etc.) and mutual interaction between different types of impurities and coagulant has been quite overlooked so far. Our previous work (Safarikova et al., 2013) showed that a presence of AOM (or especially Cellular Organic Matter - Proteins, COM) fundamentally influences the coagulation efficiency due to AOM/protein-kaolin interactions and thus, we can assume/believe that characteristics of impurities and their interactions have just as significant effect on aggregate properties as hydrodynamics. Therefore, this work has been focused on the influence of kaolinite particles (that represent turbidity) and COM of cyanobacteria Microcystis aeruginosa on size, structure and shape of aggregates formed by coagulation with two conventional coagulants (ferric and aluminium sulphate). At first, kaolinite and COM were used separately and then simultaneously and they were coagulated under different shear rates. Thus, the effect of single impurities and their mutual interaction on the aggregate properties could be compared.

Název v anglickém jazyce

Coagulation/flocculation of organic matter in water treatment

Popis výsledku anglicky

On the contrary with effect of hydrodynamic conditions on the properties of formed aggregates (Jarvis et al., 2005), the effect of the type of impurity (humic matter, AOM, clay minerals etc.), impurity properties (size of molecules, functional groups, charge density, hydrophobicity etc.) and mutual interaction between different types of impurities and coagulant has been quite overlooked so far. Our previous work (Safarikova et al., 2013) showed that a presence of AOM (or especially Cellular Organic Matter - Proteins, COM) fundamentally influences the coagulation efficiency due to AOM/protein-kaolin interactions and thus, we can assume/believe that characteristics of impurities and their interactions have just as significant effect on aggregate properties as hydrodynamics. Therefore, this work has been focused on the influence of kaolinite particles (that represent turbidity) and COM of cyanobacteria Microcystis aeruginosa on size, structure and shape of aggregates formed by coagulation with two conventional coagulants (ferric and aluminium sulphate). At first, kaolinite and COM were used separately and then simultaneously and they were coagulated under different shear rates. Thus, the effect of single impurities and their mutual interaction on the aggregate properties could be compared.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GA18-05007S" target="_blank" >GA18-05007S: Vliv organických látek produkovaných fytoplanktonem na vlastnosti vloček tvořených během koagulace/flokulace při úpravě vody</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů