Treatment of industrial effluents by electrocoagulation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25006096%3A_____%2F17%3AN0000011" target="_blank" >RIV/25006096:_____/17:N0000011 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.slsz.cz/icct2017/_0_ABSTRAKTS/08_Waste/P113-Krystynik.pdf" target="_blank" >http://www.slsz.cz/icct2017/_0_ABSTRAKTS/08_Waste/P113-Krystynik.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Treatment of industrial effluents by electrocoagulation

Popis výsledku v původním jazyce

Poster presentation Electro-coagulation is a water treatment method that can used for removal of a wide range of contaminants via (co)precipitation processes. Whilst chemical coagulation is the standard procedure in industry, where soluble salts of Al or Fe are used (e.g. Al2(SO4)3 and FeCl3), this can be replaced by an electrochemical alternative (EC) where the precipitating agent (e.g. Al3+, Fe3+) is generated by corrosion of metallic electrodes of aluminum or steel. The use of electrodes as the vehicle for delivery of Fe or Al ions to solution, effectively replaces chemical dosing stations with more compact electrochemical reactors. Various types of contaminated water from three different industrial sites in Czech Republic were tested in half scale EC system operating in continuous regime (100 L/h). Treated types of water were following: groundwater with nickel and hexavalent chromium and wastewater with arsenic and wastewater with thallium apart from common heavy metals. The results have shown that the removal efficacies are strongly dependent on pH of treated effluent, the type of electrode, the dose of coagulant and other parameters. It is also very reliant on contaminant content in treated effluent. An addition of flocculating agent was also tested on the improvements of process performance.

Název v anglickém jazyce

Treatment of industrial effluents by electrocoagulation

Popis výsledku anglicky

Poster presentation Electro-coagulation is a water treatment method that can used for removal of a wide range of contaminants via (co)precipitation processes. Whilst chemical coagulation is the standard procedure in industry, where soluble salts of Al or Fe are used (e.g. Al2(SO4)3 and FeCl3), this can be replaced by an electrochemical alternative (EC) where the precipitating agent (e.g. Al3+, Fe3+) is generated by corrosion of metallic electrodes of aluminum or steel. The use of electrodes as the vehicle for delivery of Fe or Al ions to solution, effectively replaces chemical dosing stations with more compact electrochemical reactors. Various types of contaminated water from three different industrial sites in Czech Republic were tested in half scale EC system operating in continuous regime (100 L/h). Treated types of water were following: groundwater with nickel and hexavalent chromium and wastewater with arsenic and wastewater with thallium apart from common heavy metals. The results have shown that the removal efficacies are strongly dependent on pH of treated effluent, the type of electrode, the dose of coagulant and other parameters. It is also very reliant on contaminant content in treated effluent. An addition of flocculating agent was also tested on the improvements of process performance.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

<a href="/cs/project/TA04020130" target="_blank" >TA04020130: Elektrochemické odstraňování toxických kovů ze znečištěných vod</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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