Evaluation of UV, UV/H2O2 and UV/Na2S2O8 systems for the treatment of industrial waters – Organics degradation and disinfection

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of UV, UV/H2O2 and UV/Na2S2O8 systems for the treatment of industrial waters – Organics degradation and disinfection

Popis výsledku v původním jazyce

Organic molecules in a form of organic compounds and microorganisms, measured as Total Organic Carbon (TOC), can get into industrial water and cause severe problems in consequent technology (eg. organics fouling on system walls, biofoulings, corrosion, microbiologically influenced corrosion). One of possible methods for TOC decrease - organic compounds degradation and disinfection - is to use UV light. The UV light efficiency in degradation and disinfection process can be further enhanced by the presence of oxidizing agents (eg. H2O2, Na2S2O8). The main advantage of the suggested technology is that it is universal and non-selective and that it is ecologically friendly. In this paper, we experimentally tested the efficiency of UV, UV/H2O2 and UV/Na2S2O8 systems in TOC decrease. The experiments were performed in a continuous mode with various flow rates of feed solution and oxidizing agents. As the feed solution, real samples of cooling water from various power plants (coal, nuclear) were used. The samples of water were analyzed before and after each experiment to determine TOC and microbiological indicators of water quality. In microbiological analyses we focused on the presence of culturable microorganisms (at 22 °C and 36 °C), coliforms and E. coli, enterococci, Pseudomonas aeruginosa (biofilms, sliming), Clostridium perfringens (anaerobic, endospores), Staphylococcus aureus (resistant to chemical treatment), algae and cyanobacteria. The results of experiments confirmed that UV light itself as well as in the combination with H2O2 or Na2S2O8 is an efficient method for the organics degradation and disinfection. From the experimental results, the best experimental setup for water treatment was suggested.

Název v anglickém jazyce

Evaluation of UV, UV/H2O2 and UV/Na2S2O8 systems for the treatment of industrial waters – Organics degradation and disinfection

Popis výsledku anglicky

Organic molecules in a form of organic compounds and microorganisms, measured as Total Organic Carbon (TOC), can get into industrial water and cause severe problems in consequent technology (eg. organics fouling on system walls, biofoulings, corrosion, microbiologically influenced corrosion). One of possible methods for TOC decrease - organic compounds degradation and disinfection - is to use UV light. The UV light efficiency in degradation and disinfection process can be further enhanced by the presence of oxidizing agents (eg. H2O2, Na2S2O8). The main advantage of the suggested technology is that it is universal and non-selective and that it is ecologically friendly. In this paper, we experimentally tested the efficiency of UV, UV/H2O2 and UV/Na2S2O8 systems in TOC decrease. The experiments were performed in a continuous mode with various flow rates of feed solution and oxidizing agents. As the feed solution, real samples of cooling water from various power plants (coal, nuclear) were used. The samples of water were analyzed before and after each experiment to determine TOC and microbiological indicators of water quality. In microbiological analyses we focused on the presence of culturable microorganisms (at 22 °C and 36 °C), coliforms and E. coli, enterococci, Pseudomonas aeruginosa (biofilms, sliming), Clostridium perfringens (anaerobic, endospores), Staphylococcus aureus (resistant to chemical treatment), algae and cyanobacteria. The results of experiments confirmed that UV light itself as well as in the combination with H2O2 or Na2S2O8 is an efficient method for the organics degradation and disinfection. From the experimental results, the best experimental setup for water treatment was suggested.

Druh

D - Stať ve sborníku

CEP obor

CH - Jaderná a kvantová chemie, fotochemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 3rd Internati onal Conference on Chemical Technology

ISBN

978-80-86238-79-1

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

341-344

Název nakladatele

Czech Society of Industrial Chemistry

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

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Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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