EP2373990A1 - Device and method for monitoring the concentration of a halogenated disinfectant in a swimming pool or the like - Google Patents

Device and method for monitoring the concentration of a halogenated disinfectant in a swimming pool or the like

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Publication number
EP2373990A1
EP2373990A1 EP09768110A EP09768110A EP2373990A1 EP 2373990 A1 EP2373990 A1 EP 2373990A1 EP 09768110 A EP09768110 A EP 09768110A EP 09768110 A EP09768110 A EP 09768110A EP 2373990 A1 EP2373990 A1 EP 2373990A1
Authority
EP
European Patent Office
Prior art keywords
reagent
liquid
case
measurement
colored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09768110A
Other languages
German (de)
French (fr)
Inventor
Zbigniew Stadnicki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fluidra Industry France SAS
Original Assignee
Pacific Industrie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pacific Industrie filed Critical Pacific Industrie
Publication of EP2373990A1 publication Critical patent/EP2373990A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
    • G01N31/224—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols for investigating presence of dangerous gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/05—Flow-through cuvettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/062—LED's
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis
    • Y10T436/115831—Condition or time responsive
    • Y10T436/116664—Condition or time responsive with automated titrator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/19—Halogen containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/19—Halogen containing
    • Y10T436/193333—In aqueous solution

Definitions

  • the present invention relates to a device and a method for controlling a concentration of a halogen disinfectant in a pool or the like.
  • the invention will advantageously be used in the field of controlling the chlorine or bromine concentration of individual outdoor pools.
  • the device and the associated method may be used in the control and treatment of pool water pools or pools of various types including Jacuzzi or aquarium.
  • the chlorine or bromine doses are calculated according to the characteristics of the pool when the latter is discovered; when the pool is covered, the rate of disappearance of chlorine and bromine is considerably slowed down and, because of a lack of real-time regulation, the concentration increases rapidly and becomes too high. This too high concentration is detrimental since it makes the water aggressive for the skin and for the pelvic liner.
  • Another disadvantage lies in the fact that the lack of regulation generates a high consumption of disinfectant.
  • a control device has been proposed on the market for measuring, in real time, the concentration of halogen disinfectant.
  • This device using a probe based on the redox effect is however not satisfactory. Indeed the measurement of the redox potential is not reliable given many external parameters parasitic measures.
  • the device deduces an absence of chlorine or bromine in the absence of electrolysis, or this absence of electrolysis may be due to a small presence of microbe in the water to be analyzed. In this case the device controls the addition of a new dose of disinfectant even though the concentration of disinfectant may be higher than the maximum concentration required.
  • the present invention aims to provide a device and a method for measuring in real time the concentration of halogen disinfectant, without risk of false measurement due to bleaching phenomena or a lack of reagent injection.
  • control method comprises:
  • a step of injecting a colored reagent into the analysis chamber a step of colorimetric measurement of the liquid / reagent mixture, a step of processing the measurement with respect to data, a step of verifying the measurement.
  • colorimetric when the measurement corresponds to a case of reagent whitening or a case of absence of the reaction color.
  • This last verification step makes it possible to detect, in the event of suspicious measurements detected during the treatment step, a high concentration of halogenated compounds causing bleaching or a reagent supply problem of the analysis chamber.
  • This verification step is advantageously followed by a control step thus making it possible to have in real time a suitable dosage of disinfectant.
  • the invention also relates to a device for implementing the aforementioned method, the device comprising an analysis chamber, a reagent reservoir, colorimetric analysis means, first and second means for respectively introducing the liquid to be analyzed and the reagent into the chamber.
  • the device also comprises means for mixing the colored reagent with the water to be analyzed, said stirring means comprising at least one baffle.
  • FIG. 1 there is shown a device 1 according to the invention with an analysis chamber 2, a reagent reservoir 3, colorimetric analysis means 4.
  • the device 1 further comprises first introduction means 5 arranged between the arrival of the liquid to be analyzed, typically the water inlet of the swimming pool, and the analysis chamber 2 and the second introduction means 6 of the In the example of FIG. 1, these introduction means 5 and 6 share a three-way injector, however, in another embodiment, the introduction of the reagent and the liquid are independent.
  • the first input means 5 comprise a peristaltic pump 7.
  • the introduction of the water is effected not by a pump but by a system generating a pressure difference.
  • the second introduction means 6 comprise a metering pump 8 for injecting precise volumes of reagent into the analysis chamber 2.
  • stirring means 9 are fixed and consist of baffles 10 or deflectors for stirring facilitating mixing.
  • the stirring means 9 will consist of moving means such as motorized propellers.
  • the colorimetric analysis is carried out in the analysis chamber 2 by the colorimetric analysis means 4 comprising a set of light-emitting diodes 11 associated with receivers 12 and processing means not shown in the attached figure.
  • filtration means 13 and a return of the filtered liquid are also provided in the pool circuit.
  • a recovery tank for the mixture is provided, the whole being treated or recycled in a separate device.
  • control method is described according to the device 1 presented above and which is particularly adapted to said method, it is however important to note that the method could be implemented in other devices.
  • the first input means 5 are controlled so as to inject liquid to be analyzed into the analysis chamber 2. This step can be started at fixed or variable intervals according to a program determined.
  • the method then involves injecting a colored reagent into the analysis chamber 2.
  • the injection can be performed in one or more times with varying durations and injection volumes.
  • a single injection is performed so as to limit the consumption of reagent.
  • the method then comprises processing the colorimetric measurement of the mixture in a processing step relative to stored data. In order to perform a reliable analysis, in a preferred embodiment several measurements are carried out so as to obtain a statistical value. This value is then compared with stored data corresponding to reference values and / or historical values.
  • the analysis is completed.
  • the statistical value serves as a basis for controlling an electrolyser or a chlorine pump when the chlorine content analyzed is insufficient.
  • the device then goes to sleep until the next analysis.
  • the method comprises a verification step.
  • This verification step depends on the measurement adopted in the previous step if this measurement corresponds to a reagent bleaching case, which occurs when the concentration of halogenated compound exceeds a limit, the verification step consists of injecting at least one new dose of reagent and to carry out a succession of colorimetric surveys during the injection and mixing phases of the colored reagent with the liquid to be analyzed. These different measurements make it possible to calculate the absorption speed of the colored reagent and to confirm a case of reagent whitening.
  • the verification step comprises steps of injection at determined intervals of increasing doses of colored reagent.
  • the treatment means make it possible to identify the bleaching case and the level of halogenated compound as a function of the reaction rate on the one hand and the volume of reagent on the other hand injected into the analysis chamber.
  • the verification step consists in injecting at least one new dose of reagent and raising the brightness in the chamber of analysis 2 to distinguish a case of concentration of halogenated compound of a case of non-injection of the colored reagent. Indeed by controlling at least one additional dose of reagent is obtained, if the device actually sends the reagent in the analysis chamber an increase in the concentration of the colored reagent that results in a change in brightness, the reagent being colored.
  • the verification step comprises injections of doses of colored reagent at increasing times.
  • the measurement of the brightness will not vary or little over time and therefore the process makes it possible to distinguish between a lack of reaction due to zero or very low concentration.
  • halogenated compound on the one hand and on the other hand a failure in the means of introduction of the reagent or a lack of reagent in the tank.
  • the method thus makes it possible to avoid disinfectant dispensing control in the pool because of a misinterpretation of the colorimetric measurements and also, according to an advantageous mode, to report by means of an alert of a dysfunction of the device. .
  • the process comprises at the end and / or at the beginning of each colorimetric measurement cycle a rinsing step of the analysis chamber 2.
  • a filtering step is also provided for the liquid / colored reagent assembly making it possible to limit the residues due to the control of the liquid to be analyzed.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

The invention relates to a method for monitoring the concentration of a halogenated disinfectant in a swimming pool or the like and to a device for implementing this method. According to the invention, the method comprises: - a step of injecting the liquid to be analyzed into the analysis chamber; a step of injecting a coloured reactant into the analysis chamber; a step of colorimetrically measuring the liquid/reactant mixture; a step of processing the measurement in relation to data; and a step of verifying the colorimetric measurement when the measurement corresponds to a case in which the reactant is bleached or to a case in which there is no reaction colour.

Description

Dispositif et procédé de contrôle d'une concentration d'un désinfectant halogène dans une piscine ou similaire. Device and method for controlling a concentration of a halogen disinfectant in a swimming pool or the like
La présente invention concerne un dispositif et un procédé de contrôle d'une concentration d'un désinfectant halogène dans une piscine ou similaire.The present invention relates to a device and a method for controlling a concentration of a halogen disinfectant in a pool or the like.
L'invention trouvera avantageusement application dans le domaine du contrôle de la concentration en chlore ou en brome des piscines individuelles notamment extérieures.The invention will advantageously be used in the field of controlling the chlorine or bromine concentration of individual outdoor pools.
Toutefois bien que particulièrement prévus pour une telle application le dispositif et le procédé associé pourront être utilisés dans le contrôle et le traitement d'eau de bassins collectifs ou encore de bassins de type variés et notamment de jacuzzi ou encore d'aquarium.However, although particularly intended for such an application, the device and the associated method may be used in the control and treatment of pool water pools or pools of various types including Jacuzzi or aquarium.
ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION
Les piscines extérieures sont associées de plus en plus fréquemment à des bâches de protection et/ou à des abris.. Ces éléments permettent de conserver le bassin propre en limitant les salissures et les souillures extérieures ou encore participent à la sécurisation des piscines, les abris présentent en outre l'avantage d'augmenter la saison des baignades. Classiquement les bâches et les surfaces vitrées des abris sont traitées de manière à filtrer les rayons ultraviolets, or la demanderesse a constaté que la variation du taux d' ultraviolets atteignant l'eau de la piscine influait fortement sur la vitesse de disparition des halogènes tels que le chlore et le brome .Outdoor pools are more and more frequently associated with tarpaulins and / or shelters. These elements make it possible to keep the pool clean by limiting soiling and outdoor soiling or helping to secure swimming pools, shelters have the added advantage of increasing the bathing season. Conventionally, tarpaulins and glass surfaces of shelters are treated so as to filter ultraviolet rays, and the Applicant has found that the variation of the ultraviolet rate reaching the pool water has a strong influence on the rate of disappearance of halogens such as chlorine and bromine.
En règle générale les doses de chlore ou de brome sont calculées en fonction des caractéristiques de la piscine lorsque cette dernière est découverte ; or, lorsque la piscine est recouverte, la vitesse de disparition du chlore et du brome est considérablement ralentie et par conséquent, faute de régulation en temps réel, la concentration augmente rapidement et devient trop élevée. Cette concentration trop élevée est préjudiciable puisqu'elle rend l'eau agressive pour la peau et pour le liner du bassin. Un autre inconvénient réside dans le fait que le manque de régulation engendre une consommation trop élevée de désinfectant.In general, the chlorine or bromine doses are calculated according to the characteristics of the pool when the latter is discovered; when the pool is covered, the rate of disappearance of chlorine and bromine is considerably slowed down and, because of a lack of real-time regulation, the concentration increases rapidly and becomes too high. This too high concentration is detrimental since it makes the water aggressive for the skin and for the pelvic liner. Another disadvantage lies in the fact that the lack of regulation generates a high consumption of disinfectant.
Il a été proposé sur le marché un dispositif de régulation visant à mesurer, en temps réel, la concentration de désinfectant halogène. Ce dispositif utilisant une sonde se basant sur l'effet d' oxydoréduction n'est toutefois pas satisfaisant. En effet la mesure du potentiel redox n' est pas fiable compte tenu de nombreux paramètres extérieurs parasitant les mesures. Par ailleurs le dispositif déduit une absence de chlore ou de brome en cas d'absence d' électrolyse or cette absence d' électrolyse peut être due à une faible présence de microbe dans l'eau à analyser. Dans ce cas le dispositif commande l'ajout d'une nouvelle dose de désinfectant alors même que la concentration en désinfectant peut être supérieure à la concentration maximale requise.A control device has been proposed on the market for measuring, in real time, the concentration of halogen disinfectant. This device using a probe based on the redox effect is however not satisfactory. Indeed the measurement of the redox potential is not reliable given many external parameters parasitic measures. Moreover, the device deduces an absence of chlorine or bromine in the absence of electrolysis, or this absence of electrolysis may be due to a small presence of microbe in the water to be analyzed. In this case the device controls the addition of a new dose of disinfectant even though the concentration of disinfectant may be higher than the maximum concentration required.
Il a également été proposé un dispositif permettant de mesurer, en temps réel, les concentrations en chlore en utilisant un réactif réagissant à la présence de chlore associé à un détecteur colorimétrique . Toutefois ce dispositif n'est pas fiable dans le sens où le réactif blanchit lorsque la concentration en chlore dépasse une certaine limite faussant la mesure. D'autre part, le dispositif ne peut faire la distinction entre une absence de réactif dans le mélange et une concentration faible de chlore et par conséquent peut commander l'ajout de chlore alors que la concentration en chlore est suffisante ou même supérieure à la concentration maximale requise.It has also been proposed a device for measuring, in real time, the chlorine concentrations using a reagent reacting to the presence of chlorine associated with a colorimetric detector. However, this device is not reliable in the sense that the reagent whitens when the chlorine concentration exceeds a certain limit distorting the measurement. On the other hand, the device can not distinguish between an absence of reagent in the mixture and a low concentration of chlorine and therefore can control the addition of chlorine while the concentration of chlorine is sufficient or even higher than the maximum concentration required.
OBJET DE L'INVENTIONOBJECT OF THE INVENTION
La présente invention a pour but de proposer un dispositif et un procédé permettant de mesurer en temps réel la concentration en désinfectant halogène, sans risque de fausse mesure due à des phénomènes de blanchiment ou à un défaut d'injection de réactif.The present invention aims to provide a device and a method for measuring in real time the concentration of halogen disinfectant, without risk of false measurement due to bleaching phenomena or a lack of reagent injection.
RESUME DE L'INVENTION A cet effet, le procédé de contrôle comprend :SUMMARY OF THE INVENTION For this purpose, the control method comprises:
- une étape d'injection du liquide à analyser dans la chambre d'analyse,a step of injecting the liquid to be analyzed into the analysis chamber,
- une étape d'injection d'un réactif coloré dans la chambre d'analyse, - une étape de mesure colorimétrique du mélange liquide/réactif, une étape de traitement de la mesure par rapport à des données, une étape de vérification de la mesure colorimétrique lorsque la mesure correspond à un cas de blanchiment du réactif ou un cas d' absence de la couleur de réaction.a step of injecting a colored reagent into the analysis chamber, a step of colorimetric measurement of the liquid / reagent mixture, a step of processing the measurement with respect to data, a step of verifying the measurement. colorimetric when the measurement corresponds to a case of reagent whitening or a case of absence of the reaction color.
Cette dernière étape de vérification permet de déceler, en cas de mesures suspectes détectées lors de l'étape de traitement, une concentration élevée de composés halogènes entraînant un blanchiment ou encore un problème d' alimentation en réactif de la chambre d'analyse. Cette étape de vérification est avantageusement suivie d'une étape de commande permettant ainsi d'avoir en temps réel un dosage adapté de désinfectant.This last verification step makes it possible to detect, in the event of suspicious measurements detected during the treatment step, a high concentration of halogenated compounds causing bleaching or a reagent supply problem of the analysis chamber. This verification step is advantageously followed by a control step thus making it possible to have in real time a suitable dosage of disinfectant.
L'invention vise également un dispositif pour la mise en ouvre du procédé précité, le dispositif comportant une chambre d'analyse, un réservoir de réactif, des moyens d'analyse colorimétrique, des premiers et seconds moyens d' introduction respectivement du liquide à analyser et du réactif dans la chambre. Le dispositif comprend également des moyens de brassage du réactif coloré avec l'eau à analyser, lesdits moyens de brassage comportant au moins une chicane .The invention also relates to a device for implementing the aforementioned method, the device comprising an analysis chamber, a reagent reservoir, colorimetric analysis means, first and second means for respectively introducing the liquid to be analyzed and the reagent into the chamber. The device also comprises means for mixing the colored reagent with the water to be analyzed, said stirring means comprising at least one baffle.
BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS
La présente invention sera mieux comprise à la lecture d'un exemple détaillé de réalisation en référence au dessin annexé, fourni à titre d'exemple non limitatif représentant de manière schématique un exemple de réalisation du dispositif conforme à 1' invention.The present invention will be better understood on reading a detailed example of embodiment with reference to the accompanying drawing, provided by way of non-limiting example schematically showing an embodiment of the device according to one invention.
DESCRIPTION DETAILLEE DE L'INVENTION En se reportant à la figure 1 on voit représenté un dispositif 1 selon l'invention avec une chambre d'analyse 2, un réservoir de réactif 3, des moyens d' analyse colorimétrique 4.DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 1, there is shown a device 1 according to the invention with an analysis chamber 2, a reagent reservoir 3, colorimetric analysis means 4.
Le dispositif 1 comprend en outre des premiers moyens d'introduction 5 disposés entre l'arrivée du liquide à analyser, typiquement l'arrivée d'eau de la piscine, et la chambre d'analyse 2 et des seconds moyens d'introduction 6 du réactif dans la chambre d'analyse 2. Dans l'exemple de la figure 1 ces moyens d'introduction 5 et 6 partagent un injecteur trois voies, toutefois dans un autre mode de réalisation l'introduction du réactif et du liquide sont indépendants . De manière avantageuse les premiers moyens d'introduction 5 comportent une pompe péristaltique 7. Toutefois dans une variante de réalisation on prévoit que l'introduction de l'eau s'effectue non pas par une pompe mais par un système engendrant une différence de pression. Les seconds moyens d'introduction 6 comportent quant à eux une pompe doseuse 8 permettant d'injecter des volumes précis de réactif dans la chambre d'analyse 2.The device 1 further comprises first introduction means 5 arranged between the arrival of the liquid to be analyzed, typically the water inlet of the swimming pool, and the analysis chamber 2 and the second introduction means 6 of the In the example of FIG. 1, these introduction means 5 and 6 share a three-way injector, however, in another embodiment, the introduction of the reagent and the liquid are independent. Advantageously, the first input means 5 comprise a peristaltic pump 7. However, in an alternative embodiment it is provided that the introduction of the water is effected not by a pump but by a system generating a pressure difference. The second introduction means 6 comprise a metering pump 8 for injecting precise volumes of reagent into the analysis chamber 2.
De manière à homogénéiser le mélange liquide à analyser/ réactif on prévoit en entrée de la chambre d'analyse 2 des moyens de brassage 9. Avantageusement ces moyens de brassage 9 sont fixes et constitués de chicanes 10 ou déflecteurs permettant une agitation facilitant le mélange. Cela étant dans une variante de réalisation les moyens de brassage 9 seront constitués de moyens mobiles tels que des hélices motorisées.In order to homogenize the liquid mixture to be analyzed / reagent is provided at the inlet of the analysis chamber 2 stirring means 9. Advantageously, these stirring means 9 are fixed and consist of baffles 10 or deflectors for stirring facilitating mixing. In an alternative embodiment, the stirring means 9 will consist of moving means such as motorized propellers.
L'analyse colorimétrique s'effectue dans la chambre d'analyse 2 par les moyens d'analyse colorimétrique 4 comportant un ensemble de diodes électroluminescentes 11 associées à des récepteurs 12 et à des moyens de traitement non représentés dans la figure annexée.The colorimetric analysis is carried out in the analysis chamber 2 by the colorimetric analysis means 4 comprising a set of light-emitting diodes 11 associated with receivers 12 and processing means not shown in the attached figure.
De manière avantageuse on prévoit en outre en sortie de chambre d'analyse 2 des moyens de filtration 13 et un retour du liquide filtré dans le circuit de la piscine. Cela étant dans un autre mode de réalisation compte tenu des faibles volumes à analyser on prévoit uniquement un bac de récupération du mélange, l'ensemble étant traité ou recyclé dans un dispositif séparé.Advantageously, at the outlet of the analysis chamber 2, filtration means 13 and a return of the filtered liquid are also provided in the pool circuit. However, in another embodiment, given the small volumes to be analyzed, only a recovery tank for the mixture is provided, the whole being treated or recycled in a separate device.
Le procédé de contrôle est décrit en fonction du dispositif 1 présenté ci-dessus et qui est particulièrement adapté audit procédé, il est cependant important de noter que le procédé pourrait être mis en œuvre dans d'autre dispositifs.The control method is described according to the device 1 presented above and which is particularly adapted to said method, it is however important to note that the method could be implemented in other devices.
Dans une première étape on réalise la commande des premiers moyens d'introduction 5 de manière à injecter du liquide à analyser dans la chambre d'analyse 2. Cette étape peut être lancée à des intervalles fixes ou variables selon un programme déterminé .In a first step, the first input means 5 are controlled so as to inject liquid to be analyzed into the analysis chamber 2. This step can be started at fixed or variable intervals according to a program determined.
Le procédé consiste ensuite à injecter un réactif coloré dans la chambre d'analyse 2. L'injection peut être réalisée en une ou plusieurs fois avec des durées et des volumes d'injection variables. Avantageusement dans l'étape de mesure colorimétrique préalable à l'étape de traitement on réalise une seule injection de manière à limiter la consommation de réactif . Le procédé consiste ensuite à traiter la mesure colorimétrique du mélange dans une étape de traitement par rapport à des données stockées. De manière à réaliser une analyse fiable on réalise dans un mode de réalisation préféré plusieurs mesures de façon à obtenir une valeur statistique. Cette valeur est ensuite comparée à des données stockées correspondant à des valeurs de référence et/ou des valeurs historiques.The method then involves injecting a colored reagent into the analysis chamber 2. The injection can be performed in one or more times with varying durations and injection volumes. Advantageously, in the colorimetric measurement step prior to the treatment step, a single injection is performed so as to limit the consumption of reagent. The method then comprises processing the colorimetric measurement of the mixture in a processing step relative to stored data. In order to perform a reliable analysis, in a preferred embodiment several measurements are carried out so as to obtain a statistical value. This value is then compared with stored data corresponding to reference values and / or historical values.
Lorsque cette valeur statistique est cohérente avec les valeurs de référence et/ou les valeurs historiques, l'analyse est terminée. La valeur statistique sert de base à une commande d'un électrolyseur ou d'une pompe à chlore lorsque le taux de chlore analysé est insuffisant. Le dispositif se met ensuite en veille jusqu'à la prochaine analyse. Lorsque la mesure colorimétrique ou la valeur statistique correspond à des mesures de blanchiment du réactif ou à une absence de la couleur de réaction le procédé comporte une étape de vérification.When this statistical value is consistent with the reference values and / or the historical values, the analysis is completed. The statistical value serves as a basis for controlling an electrolyser or a chlorine pump when the chlorine content analyzed is insufficient. The device then goes to sleep until the next analysis. When the colorimetric measurement or the statistical value corresponds to reagent whitening measurements or to an absence of the reaction color, the method comprises a verification step.
Cette étape de vérification dépend de la mesure retenue lors de l'étape précédente si cette mesure correspond à un .cas de blanchiment du réactif, ce qui se produit lorsque la concentration en composé halogène dépasse une limite, l'étape de vérification consiste à injecter au moins une nouvelle dose de réactif et à effectuer une succession de relevés colorimétriques pendant les phases d'injection et de mélange du réactif coloré avec le liquide à analyser. Ces différentes mesures permettent de calculer la vitesse d'absorption du réactif coloré et de confirmer un cas de blanchiment du réactif.This verification step depends on the measurement adopted in the previous step if this measurement corresponds to a reagent bleaching case, which occurs when the concentration of halogenated compound exceeds a limit, the verification step consists of injecting at least one new dose of reagent and to carry out a succession of colorimetric surveys during the injection and mixing phases of the colored reagent with the liquid to be analyzed. These different measurements make it possible to calculate the absorption speed of the colored reagent and to confirm a case of reagent whitening.
Si la concentration en composé halogène est élevée le blanchiment sera très rapide pour une dose faible de réactif aussi il sera impossible de déterminer de manière fiable une vitesse de réaction. Lorsque les mesures obtenues lors d'une injection ne permettent pas de conclure de manière certaine à un cas de blanchiment ou à une erreur de mesure dans l'étape de mesure réalisée au début du procédé, l'étape de vérification comprend des étapes d'injection à des intervalles déterminés, de doses croissantes de réactif coloré. Lorsque la dose est suffisamment importante pour déterminer une vitesse de réaction les moyens de traitement permettent d'identifier le cas de blanchiment et le taux de composé halogène en fonction de la vitesse de réaction d'une part et d'autre part du volume de réactif injecté dans la chambre d'analyse.If the halogenated compound concentration is high the bleaching will be very fast for a low dose of reagent so it will be impossible to reliably determine a reaction rate. When the measurements obtained during an injection do not make it possible to definitively conclude to a case of bleaching or to a measurement error in the measuring step carried out at the beginning of the process, the verification step comprises steps of injection at determined intervals of increasing doses of colored reagent. When the dose is large enough to determine a reaction rate, the treatment means make it possible to identify the bleaching case and the level of halogenated compound as a function of the reaction rate on the one hand and the volume of reagent on the other hand injected into the analysis chamber.
Lorsque la mesure ou la valeur statistique obtenue par les étapes de mesure colorimétrique et de traitement correspond à une absence de couleur de réaction l'étape de vérification consiste à injecter au moins une nouvelle dose de réactif et à relever la luminosité dans la chambre d'analyse 2 permettant de distinguer un cas de sous concentration en composé halogène d'un cas de non injection du réactif coloré. En effet en commandant au moins une dose supplémentaire de réactif on obtient, si le dispositif envoie réellement du réactif dans la chambre d'analyse une augmentation de la concentration du réactif coloré qui se traduit par une modification de la luminosité, le réactif étant coloré. Avantageusement pour étudier précisément les modifications de la luminosité l'étape de vérification comprend des injections de doses de réactif coloré selon des durées croissantes. Si le réactif n'est pas envoyé dans la chambre d'analyse, la mesure de la luminosité ne variera pas ou peu au cours du temps et par conséquent le procédé permet de distinguer entre une absence de réaction due à une concentration nulle ou très faible de composé halogène d'une part et d'autre part une panne au niveau des moyens d' introduction du réactif ou un manque de réactif dans le réservoir.When the measurement or the statistical value obtained by the colorimetric measurement and treatment steps corresponds to an absence of reaction color, the verification step consists in injecting at least one new dose of reagent and raising the brightness in the chamber of analysis 2 to distinguish a case of concentration of halogenated compound of a case of non-injection of the colored reagent. Indeed by controlling at least one additional dose of reagent is obtained, if the device actually sends the reagent in the analysis chamber an increase in the concentration of the colored reagent that results in a change in brightness, the reagent being colored. Advantageously to study precisely the brightness changes the verification step comprises injections of doses of colored reagent at increasing times. If the reagent is not sent to the analysis chamber, the measurement of the brightness will not vary or little over time and therefore the process makes it possible to distinguish between a lack of reaction due to zero or very low concentration. halogenated compound on the one hand and on the other hand a failure in the means of introduction of the reagent or a lack of reagent in the tank.
Le procédé permet donc d' éviter la commande de distribution de désinfectant dans la piscine à cause d'une mauvaise interprétation des mesures colorimétriques et également, selon un mode avantageux, de rendre compte par le biais d'une alerte d'un dysfonctionnement du dispositif.The method thus makes it possible to avoid disinfectant dispensing control in the pool because of a misinterpretation of the colorimetric measurements and also, according to an advantageous mode, to report by means of an alert of a dysfunction of the device. .
De manière avantageuse afin de ne pas fausser les mesures d'un cycle de contrôle à l'autre le procédé comprend en fin et/ou en début de chaque cycle de mesure colorimétrique une étape de rinçage de la chambre d'analyse 2.Advantageously, in order not to distort the measurements from one control cycle to the other, the process comprises at the end and / or at the beginning of each colorimetric measurement cycle a rinsing step of the analysis chamber 2.
Selon une caractéristique avantageuse du procédé on prévoit également une étape de filtrage de l'ensemble liquide/réactif coloré permettant de limiter les résidus dus au contrôle du liquide à analyser.According to an advantageous characteristic of the process, a filtering step is also provided for the liquid / colored reagent assembly making it possible to limit the residues due to the control of the liquid to be analyzed.
Bien entendu d' autres caractéristiques de l'invention auraient également pu être envisagées sans pour autant sortir du cadre de l'invention définie par les revendications ci-après. Of course, other features of the invention could also have been envisaged without departing from the scope of the invention defined by the claims below.

Claims

REVENDICATIONS
1. Procédé de contrôle d'une concentration d'un désinfectant halogène dans une piscine ou similaire comportant :A method of controlling a concentration of a halogen disinfectant in a pool or the like comprising:
- une étape d'injection du liquide à analyser dans une chambre d'analyse (2), une étape d'injection d'un réactif coloré dans la chambre d'analyse (2), - une étape de mesure colorimétrique du mélange liquide/réactif,a step of injecting the liquid to be analyzed into an analysis chamber (2), a step of injecting a colored reagent into the analysis chamber (2), a step of colorimetric measurement of the liquid mixture; reagent,
- une étape de traitement de la mesure par rapport à des données, une étape de vérification de la mesure colorimétrique lorsque la mesure correspond à un cas de blanchiment du réactif ou un cas d' absence de la couleur de réaction.a step of processing the measurement with respect to data, a step of verifying the colorimetric measurement when the measurement corresponds to a case of bleaching of the reagent or a case of absence of the reaction color.
2. Procédé de contrôle selon la revendication 1 dans lequel l'étape de vérification consiste à injecter au moins une nouvelle dose de réactif et à effectuer une succession de relevés colorimétriques pendant les phases d'injection et de mélange du réactif coloré avec le liquide à analyser pour déterminer la vitesse d' absorption du réactif coloré permettant de détecter un cas de blanchiment du réactif.2. Control method according to claim 1 wherein the verification step comprises injecting at least one new dose of reagent and performing a succession of colorimetric surveys during the injection and mixing phases of the colored reagent with the liquid to analyze to determine the rate of absorption of the colored reagent for detecting a case of reagent bleaching.
3. Procédé de contrôle selon la revendication 2 dans lequel l'étape de vérification comprend des injections, à des intervalles déterminés, de doses croissantes de réactif coloré. 3. Control method according to claim 2 wherein the verification step comprises injections, at given intervals, increasing doses of colored reagent.
4. Procédé de contrôle selon la revendication 1 dans lequel l'étape de vérification consisté, en cas d'absence de couleur de réaction, à injecter au moins une nouvelle dose de réactif et à relever la luminosité dans la chambre permettant de distinguer un cas de sous concentration en chlore d'un cas de non injection du réactif coloré.4. Control method according to claim 1 wherein the verification step consists, in case of absence of reaction color, to inject at least one new dose of reagent and to raise the brightness in the chamber to distinguish a case under chlorine concentration of a case of non injection of colored reagent.
5. Procédé de contrôle selon la revendication 4 dans lequel l'étape de vérification comprend des injections de doses de réactif coloré selon des durées croissantes.5. Control method according to claim 4 wherein the verification step comprises injections of doses of colored reagent at increasing times.
6. Procédé de contrôle selon la revendication 1 dans lequel le procédé comporte en outre une étape de commande permettant l'envoi d'une dose de désinfectant.6. The control method according to claim 1 wherein the method further comprises a control step for sending a dose of disinfectant.
7. Procédé de contrôle selon la revendication 1 dans lequel le procédé comporte en outre une étape de filtrage de l'ensemble liquide/réactif coloré.7. The control method according to claim 1 wherein the method further comprises a step of filtering the liquid / color reagent assembly.
8. Procédé de contrôle selon la revendication 1 dans lequel le procédé comporte en outre une étape de rinçage de la chambre d'analyse. 8. Control method according to claim 1 wherein the method further comprises a step of rinsing the analysis chamber.
9. Dispositif de contrôle pour la mise en œuvre d'un procédé selon l'une quelconque des revendications précédentes comportant une chambre d'analyse (2), un réservoir de réactif (3), des moyens d'analyse colorimétrique (4 ) , des premiers et seconds moyens d'introduction (5,6) respectivement du liquide à analyser et du réactif dans la chambre (2), caractérisé en ce qu'il comprend des moyens de brassage (9) du réactif coloré avec l'eau à analyser, lesdits moyens de brassage (9) comportant au moins une chicane (10). 9. Control device for carrying out a method according to any one of the preceding claims comprising an analysis chamber (2), a reagent reservoir (3), colorimetric analysis means (4), first and second introduction means (5,6) respectively of the liquid to be analyzed and the reagent in the chamber (2), characterized in that it comprises stirring means (9) of the colored reagent with the water to analyzing, said brewing means (9) comprising at least one baffle (10).
10. Dispositif de contrôle selon la revendication 10 dans lequel les premiers moyens d'introduction (5) comportent une pompe péristaltique (7) permettant l'injection du liquide dans la chambre d' analyse . 10. Control device according to claim 10 wherein the first introduction means (5) comprise a peristaltic pump (7) for injecting the liquid in the analysis chamber.
EP09768110A 2008-11-17 2009-11-17 Device and method for monitoring the concentration of a halogenated disinfectant in a swimming pool or the like Withdrawn EP2373990A1 (en)

Applications Claiming Priority (2)

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FR0806409A FR2938653B1 (en) 2008-11-17 2008-11-17 DEVICE AND METHOD FOR CONTROLLING A CONCENTRATION OF A HALOGEN DISINFECTANT IN A SWIMMING POOL OR THE LIKE
PCT/FR2009/001323 WO2010055236A1 (en) 2008-11-17 2009-11-17 Device and method for monitoring the concentration of a halogenated disinfectant in a swimming pool or the like

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DE102022121644A1 (en) * 2022-08-26 2024-02-29 Kowalytics UG (haftungsbeschränkt) Measuring device, additional module, measuring system and method for water analysis

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US8778692B2 (en) 2014-07-15
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WO2010055236A1 (en) 2010-05-20
FR2938653B1 (en) 2011-02-11
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AU2009315505B2 (en) 2012-12-20
FR2938653A1 (en) 2010-05-21

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