Verification of Reverse Osmosis for Primary Coolant Treatment in Temelín Nuclear Power Plant

Kód výsledku v IS VaVaI

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RIV/26722445:_____/16:N0000092

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Verification of Reverse Osmosis for Primary Coolant Treatment in Temelín Nuclear Power Plant

Popis výsledku v původním jazyce

Drained primary coolant from nuclear power plants containing boric acid is currently treated in the system of evaporators and by ion exchangers. Their operation is expensive, therefore other alternatives are examined, e.g. reverse osmosis. Using reverse osmosis, the feed primary coolant is separated into two output streams: retentate and permeate. Retentate stream consists of concentrated boric acid solution together with other components, while permeate stream consists of purified water. A pilot-plant unit of reverse osmosis was tested in Temelín nuclear power plant. It was installed in the Special Purification System SVO-6 for the regeneration of boric acid. Three experimental tests with real primary coolant of various composition and total radioactivity were performed across a wide range of feed primary coolant pH and with various total flows through the membrane modulus and recoveries (ratio of permeate flow rate to feed flow rate). During the tests, samples of output streams were taken and analyzed for chemical parameters (conductivity and H3BO3, NH3, K and Li concentrations) and radioactivity parameters (total radioactivity and radioactivity and concentration of 134Cs and 137Cs isotopes). The aim of the tests performed in Temelín nuclear power plant was to verify possible use of reverse osmosis for the treatment of primary coolant, i.e. to obtain a concentrated solution of boric acid in the retentate stream and permeate stream pure of boric acid.

Název v anglickém jazyce

Verification of Reverse Osmosis for Primary Coolant Treatment in Temelín Nuclear Power Plant

Popis výsledku anglicky

Drained primary coolant from nuclear power plants containing boric acid is currently treated in the system of evaporators and by ion exchangers. Their operation is expensive, therefore other alternatives are examined, e.g. reverse osmosis. Using reverse osmosis, the feed primary coolant is separated into two output streams: retentate and permeate. Retentate stream consists of concentrated boric acid solution together with other components, while permeate stream consists of purified water. A pilot-plant unit of reverse osmosis was tested in Temelín nuclear power plant. It was installed in the Special Purification System SVO-6 for the regeneration of boric acid. Three experimental tests with real primary coolant of various composition and total radioactivity were performed across a wide range of feed primary coolant pH and with various total flows through the membrane modulus and recoveries (ratio of permeate flow rate to feed flow rate). During the tests, samples of output streams were taken and analyzed for chemical parameters (conductivity and H3BO3, NH3, K and Li concentrations) and radioactivity parameters (total radioactivity and radioactivity and concentration of 134Cs and 137Cs isotopes). The aim of the tests performed in Temelín nuclear power plant was to verify possible use of reverse osmosis for the treatment of primary coolant, i.e. to obtain a concentrated solution of boric acid in the retentate stream and permeate stream pure of boric acid.

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

4. mezinárodní chemicko-technologická konference - Sborník abstrakt a plných textů

ISBN

978-80-86238-91-3

ISSN

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e-ISSN

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Počet stran výsledku

3

Strana od-do

1-3

Název nakladatele

Česká společnost průmyslové chemie

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

25. 4. 2016

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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