C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/20 (2006.01) B01D 3/38 (2006.01) B01D 3/42 (2006.01) G01N 21/33 (2006.01)
Patent
CA 2430035
The invention concerns a method characterised in that it consists in: determining online at least an ultraviolet spectrum portion of at least one of the compounds present in one or the other of the waste water feeding circuits (7, 13) or of the column (8) waste water output (16); qualitatively and quantitatively determining, by mathematical processing of the measured intensity levels, at least a contaminant present in the samples; on the basis of the results obtained and by comparing with pre-defined setpoint values, in restoring said data in the form of electric signals, which control the waste water supply and the stripping column water vapour flow rates.
Selon l'invention: on détermine en ligne au moins une portion du spectre ultraviolet d'au moins un des composés présents dans l'un ou l'autre des circuits d'alimentation (7, 13) en eaux usées ou de sortie des eaux traitées (16) de la colonne (8); on détermine qualitativement et quantitativement, par traitement mathématique des intensités mesurées, au moins un produit contaminant présent dans les échantillonnes prélevés; en fonction des résultats ainsi obtenus et par comparaison à des valeurs de consigne préalablement définies, on restitue ces informations sous forme de signaux électriques, qui commandent les débits d'alimentation en eaux usées et en vapeur d'eau de la colonne de strippage.
Buisson Jean-Francois
Pouly Frederic
Robic
Totalfinaelf France
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