Gaois

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  1. ENVIRONMENT · INDUSTRY|chemistry
    éileamh ceimiceach ar ocsaigin Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    Definition tomhas ar an méid ocsaigne a chaitear ó oscaídeoir ceimiceach i ndálaí rialaithe Reference Fiontar, Ollscoil Chathair Bhaile Átha Cliath (DCU), bunaithe ar:'Plean Iniúchta Náisiúnta 2013', An Ghníomhaireacht um Chaomhnú Comhshaoil, https://www.epa.ie/pubs/reports/water/wastewater/National%20Inspection%20Plan_final_GAE.pdf [27.5.2016]
    chemischer Sauerstoffbedarf | CSB
    de
    Definition Sauerstoffmenge, welche zur Oxidation aller chemischen Verbindungen im Wasser nötig ist Reference http://www.envirohelp.eu.com/germany/glossary/index.html, 19.07.2006
    oxygen demand | COD | chemical oxygen demand
    en
    Definition amount of dissolved oxygen1 required to react with chemicals in water1dissolved oxygen [ IATE:1491194 ] Reference COM-Terminology Coordination, based on:Raelen Williard,Howard E. Haines, Jr. Montana Bioenergy Guidebook. Montana Department of Natural Resources and Conservation. December 1991, https://books.google.be/books?id=LMVL8GTjIyEC&pg=PR10&lpg=PR10&dq=amount+of+dissolved+oxygen+required+to+combine+with+chemicals+in+wastewater&source=bl&ots=4YtA5K13zg&sig=StIV44MYttlObwBlVqlhNdobgV4&hl=fr&sa=X&redir_esc=y#v=onepage&q=amount%20of%20dissolved%20oxygen%20required%20to%20combine%20with%20chemicals%20in%20wastewater&f=false [3.2.2016]
    Comment A measure of the oxygen equivalent of that portion of organic matter that is susceptible to oxidation by a strong chemical oxidizing agent.It is a measure of the oxidisability of a substance, expressed as the equivalent amount in oxygen of an oxidising reagent consumed by the substance under fixed laboratory conditions.See also: - biochemical oxygen demand [ IATE:1427092 ]- dichromate method [ IATE:753071 ]
    demande chimique en oxygène | DCO | COD
    fr
    Definition la consommation en oxygène par les oxydants chimiques forts pour oxyder les substances organiques et minérales de l'eau. Elle permet d'évaluer la charge polluante des eaux usées." Reference Wikipédia, l'encyclopédie libre, http://fr.wikipedia.org/wiki/Demande_chimique_en_oxyg%C3%A8ne [15.2.2007]
    Comment L'oxydant employé classiquement est le dichromate de potassium [ IATE:753071 ]. DCO mesure la totalité des substances oxydables, ce qui inclut celles qui sont biodégradables. La quantité de matières biodégradables par oxydation biochimique (oxydation par des bactéries aérobies qui tirent leur énergie de réactions d'oxydo-réduction) contenue dans l'eau à analyser est définie par le paramètre DBO [ IATE:1427092 ]