Method of monitoring microbiological deposits

G - Physics – 01 – N

Patent

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Details

G01N 33/543 (2006.01) G01N 29/02 (2006.01)

Patent

CA 2724845

A method for monitoring one or more deposits including microbiological deposits on a surface immersed in an aqueous medium of a process is disclosed. The method comprises: (a) providing a QCM that is in contact with an aqueous medium, wherein said QCM has a top side surface contacting the aqueous medium, and a second, bottom side surface isolated from the aqueous medium; (b) providing a composition that is selective for one or more deposit types, including microbiological deposits without the use of an antigen or an antibody; (c) applying said composition to the top side of said QCM surface; (d) measuring the rate of deposition of said deposits from the aqueous medium onto the top side of said QCM surface; and (e) optionally taking corrective action to change one or more process parameters, or chemistry applied to the process, or a combination thereof, to achieve a desired result in regards to microbiological deposition.

L'invention porte sur un procédé qui permet de surveiller un ou plusieurs dépôts comprenant des dépôts microbiologiques sur une surface immergée dans un milieu aqueux utilisé lors d'un processus. Le procédé selon l'invention consiste à: (a) former une microbalance à quartz (QCM) en contact avec un milieu aqueux, ladite QCM possédant une surface de côté supérieur en contact avec le milieu aqueux et une seconde surface, de côté inférieur, isolée du milieu aqueux; (b) former une composition sélective pour un ou plusieurs types de dépôts comprenant des dépôts microbiologiques, sans utiliser d'antigène ni d'anticorps; (c) appliquer ladite composition sur le côté supérieur de la surface de la QCM; (d) mesurer la vitesse de dépôt des dépôts se formant depuis le milieu aqueux sur le côté supérieur de la surface de la QCM; et (e) facultativement, prendre des mesures de correction afin de modifier un ou plusieurs paramètres de traitement et/ou la chimie appliquée au traitement afin d'obtenir un résultat désiré en termes de dépôt microbiologique.

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