WO2006061515A1 - Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater - Google Patents

Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater Download PDF

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Publication number
WO2006061515A1
WO2006061515A1 PCT/FR2005/003069 FR2005003069W WO2006061515A1 WO 2006061515 A1 WO2006061515 A1 WO 2006061515A1 FR 2005003069 W FR2005003069 W FR 2005003069W WO 2006061515 A1 WO2006061515 A1 WO 2006061515A1
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WIPO (PCT)
Prior art keywords
microorganisms
vessel
tank
cannula
granulate
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PCT/FR2005/003069
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French (fr)
Inventor
Michel Tombeur
Gilles Bonamy
Original Assignee
Michel Tombeur
Gilles Bonamy
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 Michel Tombeur, Gilles Bonamy filed Critical Michel Tombeur
Publication of WO2006061515A1 publication Critical patent/WO2006061515A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/10Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in stationary drums or troughs, provided with kneading or mixing appliances
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/116Stirrers shaped as cylinders, balls or rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/84Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F2003/001Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms

Definitions

  • the invention is in the field of the treatment of contaminated soils and / or wastewater, and more particularly of the field of such treatment using a treating product composed of a cellular granulate constituting a substrate for microorganisms, such as bacteria and / or enzymes. It relates to an apparatus for the preparation of such a treatment product.
  • a treating product consisting of a mass of granulate carrying microorganisms.
  • the granulate is honeycombed to form a substrate for the development of microorganisms by nesting inside the cells.
  • a granulate is for example a granulate of natural minerals, such as zeolite, lithotanium, bentonite, kaolin or other similar material offering niches for the development of microorganisms.
  • the latter which constitute the active agents for the treatment of soil and / or wastewater, include bacteria of various active strains and / or enzymes.
  • the alveoli of the substrate being used to allow the nesting of bacteria for their development, the problem is to solve to promote this nesting during the preparation of the treating product.
  • the quality of this nesting depends on the development capacity of the bacteria when the treatment product is spread over the area to be treated. More particularly, the strains of microorganisms being in plurality, it is essential that each of these strains is properly nidified, to avoid insufficient concentration or even disappearance of the weakest strains.
  • the amount of microorganisms contained in the treatment product remains low compared to the extent of the area to be treated. It also shows that it is necessary to promote the nesting of microorganisms to increase their concentration.
  • since the amount of microorganisms tends to decrease after spreading of the treatment product due to the toxicity of the soil and / or the wastewater to be treated, it is still desirable to promote the nesting concentration of these microorganisms in the substrate.
  • the object of the present invention is to provide an apparatus for the preparation of a treatment product for the treatment of contaminated soils and / or wastewater, this treating product being composed of a honeycomb granulate forming a nesting substrate for microorganisms. It is more particularly the object of the present invention to provide such an apparatus which makes it possible to obtain a treatment product in which the nesting and the homogeneity of the distribution of the microorganisms in the substrate are favored, which tends to limit the duration of preparation of the treatment product obtained, and which avoids a loss of microorganisms to be mixed with the granulate.
  • the apparatus of the present invention is an apparatus for the preparation of a treating product for the treatment of contaminated soils and / or wastewater.
  • This treating product is composed of a honeycomb granulate forming a nesting substrate for microorganisms.
  • such an apparatus is mainly recognizable in that it comprises:
  • Such a preparation of the treating product makes it possible to promote the homogenous nesting of the microorganisms, by optimizing the number of microorganisms nidifies with regard to the number of microorganisms mixed with the substrate. It will be noted that the microorganisms which are not nidified after an operation of preparation of the treating product, are likely to be recovered at the bottom of the tank for later use.
  • the treatment product obtained by means of the apparatus of the invention provides a suitable nesting of the microorganisms, while respecting the development of each of the introduced strains, which makes it possible to increase the degradation of the pollutants of the zones to be treated thanks to a development of films bacteria and the rapid formation of a floc.
  • the cannula is in particular immersed inside the tank and is in communication via an intake duct with at least one tank of microorganisms.
  • This reservoir is preferably equipped with means for discharging under pressure microorganisms out of the reservoir to the intake duct. It will be understood that it is preferred to provide the apparatus of the invention with a plurality of reservoirs containing a respective and differentiated strain of microorganisms, bacteria and / or enzyme in particular.
  • the branch is particularly plunging inside the tank and has at its proximal end a drive shaft.
  • the latter emerges out of the tank and is connected to a motor member external to the tank.
  • This drive shaft is extended at its distal end, towards the inside of the tank, by at least one stirring arm.
  • the branch comprises at its distal end a plurality of stirring arms, which are preferably radially distributed on the branch, preferably along the latter.
  • the stirring arms are preferably equipped with a deflector for forming a groove inside the substrate during their rotation, to facilitate the flow of microorganisms in the substrate.
  • This deflector is for example formed of a dome disposed at the distal end of the brewing arms, or is formed of at least one helical wing formed along the brewing arms.
  • the tank is in particular a sealed tank, which is advantageously provided with a closable inlet hopper granulate.
  • the cannula is for example formed of an open conduit at its end, or alternatively and preferably consists of a microperforated conduit.
  • the cannula and the branch constitute the same organ. More particularly, this member consists of a perforated conduit plunging inside the vessel and emerging out of the latter for its rotational drive by the drive member and for its junction with the intake duct.
  • This perforated duct is advantageously subdivided into several brewing and dispersing arms of the microorganisms admitted into the duct.
  • an apparatus is intended for the preparation of a treatment product for polluted soils and / or wastewater.
  • This product is mainly composed of a granulate, forming nesting substrate for microorganisms.
  • This apparatus comprises a sealed tank 1 intended to receive the granulate and microorganisms. These are stored in respective reserves 2, which are connected via an intake duct 3, preferably flexible, to a cannula 4 plunging inside the tank 1.
  • the reserves 2 of microorganisms are equipped means 5 for evacuating the microorganisms to the inlet duct 3 under pressure.
  • the cannula 4 is organized in the stirring branch of the granulate and microorganisms contained inside the vessel 1.
  • the proximal end of the cannula 4 comprises a drive shaft 6 in rotation, in relation with an external drive member 7 1.
  • the distal end of the cannula 4 comprises a plurality of stirring arms 8, preferably bent, which are radially distributed along the cannula 4.
  • the latter is also connected to the flexible conduit 3 via a rotating connector 12 or similar member in particular.
  • the brewing arms 8 are equipped at their distal end with a dome 13 forming a deflector, for the purpose of forming a groove in the mass of the substrate to facilitate the flow of microorganisms.
  • the vessel 1 is sealed and is provided at its top with a hopper 9 closable, in particular by a lid 10 or the like, for the admission of the granulate.
  • a trap 11 is advantageously provided at the base of the tank 1 for the evacuation of the prepared treatment product.

Abstract

The invention concerns an apparatus for preparing a treating product for treating contaminated soils and/or wastewater. Said treating product consists of a cellular granular material forming a nesting substrate for microorganisms. Said apparatus comprises a closed vessel (1) for receiving the granular material and the microorganisms, at least one cannula (4) for pressurized intake of the microorganisms inside the vessel (1), and at least a rotary stick (4, 6, 8) for stirring inside the vessel (1) the granular material and the microorganisms.

Description

APPAREIL POUR LA NIDIFICATION DE MICROORGANISMES DANS UN GRANULAT ALVEOLEAPPARATUS FOR NIDIFYING MICROORGANISMS IN AN ALVEOLE GRANULATE
DESTINE AU TRAITEMENT DES SOLS SOUILLES ET /OU DES EAUXINTENDED FOR THE TREATMENT OF SOIL SOIL AND / OR WATER
USEESWASTE
Domaine technique de l'invention.Technical Field of the Invention
L'invention est du domaine du traitement des sols souillés et/ou des eaux usées, et plus particulièrement du domaine d'un tel traitement au moyen d'un produit traitant composé d'un granulat alvéolé constituant un substrat pour des microorganismes, tels que bactéries et/ou enzymes. Elle a pour objet un appareil pour la préparation d'un tel produit traitant.The invention is in the field of the treatment of contaminated soils and / or wastewater, and more particularly of the field of such treatment using a treating product composed of a cellular granulate constituting a substrate for microorganisms, such as bacteria and / or enzymes. It relates to an apparatus for the preparation of such a treatment product.
Etat de la technique.State of the art
Dans le domaine du traitement des sols souillés et/ou des eaux usées, il est connu de répandre sur l'étendue à traiter un produit traitant constitué d'une masse de granulat porteur de microorganismes. Le granulat est alvéolé pour former un substrat pour le développement des microorganismes par nidification à l'intérieur des alvéoles. Un tel granulat est par exemple un granulat de minéraux naturels, tel que zéolite, lithotanium, bentonite, kaolin ou autre matériau analogue offrant des niches pour le développement des microorganismes. Ces derniers, qui constituent les agents actifs pour le traitement du sol et/ou des eaux usées, sont notamment des bactéries de diverses souches actives et/ou des enzymes.In the field of the treatment of contaminated soils and / or wastewater, it is known to spread over the area to be treated a treating product consisting of a mass of granulate carrying microorganisms. The granulate is honeycombed to form a substrate for the development of microorganisms by nesting inside the cells. Such a granulate is for example a granulate of natural minerals, such as zeolite, lithotanium, bentonite, kaolin or other similar material offering niches for the development of microorganisms. The latter, which constitute the active agents for the treatment of soil and / or wastewater, include bacteria of various active strains and / or enzymes.
Les alvéoles du substrat étant mises à profit pour permettre la nidification des bactéries en vue de leur développement, se pose le problème à résoudre de favoriser cette nidification lors de la préparation du produit traitant. En effet, de la qualité de cette nidification dépend la capacité de développement des bactéries lorsque le produit traitant est répandu sur la zone à traiter. Plus particulièrement les souches de microorganismes étant en pluralité, il est essentiel que chacune de ces souches soit correctement nidifiées, pour éviter une concentration insuffisante, voire une disparition, de la ou des souches les plus faibles. En outre, la quantité de microorganismes que comporte le produit traitant reste faible au regard de l'étendue de la zone à traiter. Il en ressort encore qu'il est nécessaire de favoriser la nidification des microorganismes pour augmenter au mieux leur concentration. De surcroît, la quantité des microorganismes tendant à diminuer après épandage du produit traitant en raison de la toxicité des sols et/ou des eaux usées à traiter, il est encore souhaitable de favoriser la concentration par nidification de ces microorganismes dans le substrat.The alveoli of the substrate being used to allow the nesting of bacteria for their development, the problem is to solve to promote this nesting during the preparation of the treating product. In fact, the quality of this nesting depends on the development capacity of the bacteria when the treatment product is spread over the area to be treated. More particularly, the strains of microorganisms being in plurality, it is essential that each of these strains is properly nidified, to avoid insufficient concentration or even disappearance of the weakest strains. In addition, the amount of microorganisms contained in the treatment product remains low compared to the extent of the area to be treated. It also shows that it is necessary to promote the nesting of microorganisms to increase their concentration. In addition, since the amount of microorganisms tends to decrease after spreading of the treatment product due to the toxicity of the soil and / or the wastewater to be treated, it is still desirable to promote the nesting concentration of these microorganisms in the substrate.
Pour préparer le produit traitant, il est habituel de mêler les microorganismes et le substrat. A cet effet, il est par exemple connu d'utiliser un tambour tournant à l'intérieur duquel ils sont déversés. Pour optimiser la fixation des microorganismes sur le substrat, il est nécessaire de maintenir la rotation du tambour sur une durée élevée, de l'ordre de vingt-quatre heures par type de microorganismes et par tonne de granulatTo prepare the treating product, it is usual to mix the microorganisms and the substrate. For this purpose, it is for example known to use a rotating drum inside which they are dumped. To optimize the fixation of microorganisms on the substrate, it is necessary to maintain the rotation of the drum over a long period, of the order of twenty-four hours per type of microorganism and per ton of granulate
II est apparu à l'usage qu'une telle méthode de préparation du produit traitant méritait d'être améliorée. En effet, il est souhaitable de réduire la durée de préparation du produit sans en affecter la qualité, voire et de préférence en améliorant la nidification des microorganismes. En outre ces derniers sont conditionnés sous forme de poudre, ce qui entraîne une déperdition importante de microorganismes lors de la préparation du produit, avec pour conséquence d'avoir à en apporter une quantité significativement plus importante que celle finalement nidifiée dans le substrat. Enfin, il est souhaitable d'améliorer la répartition homogène des microorganismes dans le substrat.It has become apparent that such a method of preparing the treating product deserves to be improved. Indeed, it is desirable to reduce the preparation time of the product without affecting the quality, and preferably and preferably by improving the nesting of microorganisms. In addition, these are packaged in powder form, which results in a significant loss of microorganisms during the preparation of the product, with the consequence of having to provide a significantly greater amount than that finally nidified in the substrate. Finally, it is desirable to improve the homogeneous distribution of microorganisms in the substrate.
Objet de l'invention.Object of the invention
Le but de la présente invention est de proposer un appareil pour la préparation d'un produit traitant destiné au traitement des sols souillés et/ou des eaux usées, ce produit traitant étant composé d'un granulat alvéolé formant substrat de nidification pour des microorganismes. II est plus particulièrement visé par la présente invention de proposer un tel appareil qui permet l'obtention d'un produit traitant dans lequel la nidification et l'homogénéité de la répartition des microorganismes dans le substrat sont favorisées, qui tend à limiter la durée de préparation du produit traitant obtenu, et qui permet d'éviter une déperdition des microorganismes destinés à être mêlés au granulat.The object of the present invention is to provide an apparatus for the preparation of a treatment product for the treatment of contaminated soils and / or wastewater, this treating product being composed of a honeycomb granulate forming a nesting substrate for microorganisms. It is more particularly the object of the present invention to provide such an apparatus which makes it possible to obtain a treatment product in which the nesting and the homogeneity of the distribution of the microorganisms in the substrate are favored, which tends to limit the duration of preparation of the treatment product obtained, and which avoids a loss of microorganisms to be mixed with the granulate.
L'appareil de la présente invention est un appareil pour la préparation d'un produit traitant destiné au traitement des sols souillés et/ou des eaux usées. Ce produit traitant est composé d'un granulat alvéolé formant substrat de nidification pour des microorganismes.The apparatus of the present invention is an apparatus for the preparation of a treating product for the treatment of contaminated soils and / or wastewater. This treating product is composed of a honeycomb granulate forming a nesting substrate for microorganisms.
Selon la présente invention, un tel appareil est principalement reconnaissable en ce qu'il comprend :According to the present invention, such an apparatus is mainly recognizable in that it comprises:
*) une cuve fermée de réception du granulat et des microorganismes, * ) a closed vessel for receiving granulate and microorganisms,
*) au moins une canule d'admission sous pression des microorganismes à l'intérieur de la cuve,*) at least one pressure inlet cannula microorganisms inside the tank,
*) au moins une branche rotative de brassage à l'intérieur de la cuve du granulat et des microorganismes.*) at least one rotating branch of stirring inside the tank of the aggregate and microorganisms.
Une telle préparation du produit traitant permet de favoriser la nidification homogène des microorganismes, en optimisant le nombre de microorganismes nidifies au regard du nombre de microorganismes mêlés au substrat. On notera que les microorganismes qui ne sont pas nidifies après une opération de préparation du produit traitant, sont susceptibles d'être récupérés en fond de cuve pour une utilisation ultérieure. Le produit traitant obtenu grâce à l'appareil de l'invention offre une nidification idoine des microorganismes, en respectant le développement de chacune des souches introduites, ce qui permet d'augmenter la dégradation des polluants des zones à traiter grâce à un développement de films bactériens et à la formation rapide d'un floc. La canule est notamment plongeante à l'intérieur de la cuve et est en relation par l'intermédiaire d'un conduit d'admission avec au moins un réservoir de microorganismes. Ce réservoir est préférentiellement équipé de moyens d'évacuation sous pression des microorganismes hors du réservoir vers le conduit d'admission. On comprendra qu'il est préféré de doter l'appareil de l'invention d'une pluralité de réservoirs contenant une souche respective et différenciée de microorganismes, bactéries et/ou d'enzyme notamment.Such a preparation of the treating product makes it possible to promote the homogenous nesting of the microorganisms, by optimizing the number of microorganisms nidifies with regard to the number of microorganisms mixed with the substrate. It will be noted that the microorganisms which are not nidified after an operation of preparation of the treating product, are likely to be recovered at the bottom of the tank for later use. The treatment product obtained by means of the apparatus of the invention provides a suitable nesting of the microorganisms, while respecting the development of each of the introduced strains, which makes it possible to increase the degradation of the pollutants of the zones to be treated thanks to a development of films bacteria and the rapid formation of a floc. The cannula is in particular immersed inside the tank and is in communication via an intake duct with at least one tank of microorganisms. This reservoir is preferably equipped with means for discharging under pressure microorganisms out of the reservoir to the intake duct. It will be understood that it is preferred to provide the apparatus of the invention with a plurality of reservoirs containing a respective and differentiated strain of microorganisms, bacteria and / or enzyme in particular.
La branche est notamment plongeante à l'intérieur de la cuve et comporte à son extrémité proximale un arbre d'entraînement. Ce dernier émerge hors de la cuve et est relié à un organe moteur externe à la cuve. Cet arbre d'entraînement est prolongé à son extrémité distale, vers l'intérieur de la cuve, par au moins un bras de brassage.The branch is particularly plunging inside the tank and has at its proximal end a drive shaft. The latter emerges out of the tank and is connected to a motor member external to the tank. This drive shaft is extended at its distal end, towards the inside of the tank, by at least one stirring arm.
Selon une forme préférée de réalisation, la branche comporte à son extrémité distale une pluralité de bras de brassage, qui sont de préférence radialement répartis sur la branche, préférentiellement le long de cette dernière.According to a preferred embodiment, the branch comprises at its distal end a plurality of stirring arms, which are preferably radially distributed on the branch, preferably along the latter.
Les bras de brassage sont préférentiellement équipés d'un déflecteur pour la formation d'un sillon à l'intérieur du substrat lors de leur mise en rotation, afin de faciliter l'écoulement des microorganismes dans le substrat.The stirring arms are preferably equipped with a deflector for forming a groove inside the substrate during their rotation, to facilitate the flow of microorganisms in the substrate.
Ce déflecteur est par exemple formé d'une coupole disposée à l'extrémité distale des bras de brassage, ou encore est formée d'au moins une aile en hélice ménagée le long des bras de brassage.This deflector is for example formed of a dome disposed at the distal end of the brewing arms, or is formed of at least one helical wing formed along the brewing arms.
La cuve est notamment une cuve étanche, qui est avantageusement munie d'une trémie obturable d'admission du granulat.The tank is in particular a sealed tank, which is advantageously provided with a closable inlet hopper granulate.
La canule est par exemple formée d'un conduit ouvert à son extrémité, ou encore et de préférence est constituée d'un conduit microperforé. Selon une forme avantageuse de réalisation, la canule et la branche constituent un même organe. Plus particulièrement, cet organe est constitué d'un conduit ajouré plongeant à l'intérieur de la cuve et émergeant hors de cette dernière pour son entraînement en rotation par l'organe moteur et pour sa jonction avec le conduit d'admission. Ce conduit ajouré se subdivise avantageusement en plusieurs bras de brassage et de dispersion des microorganismes admis à l'intérieur de ce conduit.The cannula is for example formed of an open conduit at its end, or alternatively and preferably consists of a microperforated conduit. According to an advantageous embodiment, the cannula and the branch constitute the same organ. More particularly, this member consists of a perforated conduit plunging inside the vessel and emerging out of the latter for its rotational drive by the drive member and for its junction with the intake duct. This perforated duct is advantageously subdivided into several brewing and dispersing arms of the microorganisms admitted into the duct.
Description de la figure.Description of the figure.
La présente invention sera mieux comprise et des détails en relevant apparaîtront, à la description qui va en être faite en relation avec la figure unique de la planche annexée, qui illustre schématiquement un appareil de l'invention selon une forme préférée de réalisation.The present invention will be better understood and details will arise from the description which will be made in connection with the single figure of the accompanying plate, which schematically illustrates an apparatus of the invention according to a preferred embodiment.
Sur la figure, un appareil est destiné à la préparation d'un produit traitant pour des sols pollués et/ou des eaux usées. Ce produit est principalement composé d'un granulat, formant substrat de nidification pour des microorganismes.In the figure, an apparatus is intended for the preparation of a treatment product for polluted soils and / or wastewater. This product is mainly composed of a granulate, forming nesting substrate for microorganisms.
Cet appareil comprend une cuve étanche 1 destinée à recevoir le granulat et les microorganismes. Ces derniers sont stockés dans des réserves respectives 2, qui sont reliées par l'intermédiaire d'un conduit d'admission 3, préférentiellement souple, à une canule 4 plongeante à l'intérieur de la cuve 1. Les réserves 2 de microorganismes sont équipées de moyens 5 d'évacuation sous pression des microorganismes vers le conduit d'admission 3.This apparatus comprises a sealed tank 1 intended to receive the granulate and microorganisms. These are stored in respective reserves 2, which are connected via an intake duct 3, preferably flexible, to a cannula 4 plunging inside the tank 1. The reserves 2 of microorganisms are equipped means 5 for evacuating the microorganisms to the inlet duct 3 under pressure.
La canule 4 est organisée en branche de brassage du granulat et des microorganismes contenus à l'intérieur de la cuve 1. L'extrémité proximale de la canule 4 comporte un arbre d'entraînement 6 en rotation, en relation avec un organe moteur 7 externe à la cuve 1. L'extrémité distale de la canule 4 comporte une pluralité de bras de brassage 8, préférentiellement coudés, qui sont radialement répartis le long de la canule 4. Cette dernière est par ailleurs reliée au conduit souple 3 par l'intermédiaire d'un raccord tournant 12 ou organe analogue notamment.The cannula 4 is organized in the stirring branch of the granulate and microorganisms contained inside the vessel 1. The proximal end of the cannula 4 comprises a drive shaft 6 in rotation, in relation with an external drive member 7 1. The distal end of the cannula 4 comprises a plurality of stirring arms 8, preferably bent, which are radially distributed along the cannula 4. The latter is also connected to the flexible conduit 3 via a rotating connector 12 or similar member in particular.
Les bras de brassage 8 sont équipés à leur extrémité distale d'une coupole 13 formant déflecteur, en vue de la formation d'une sillon dans la masse du substrat pour faciliter l'écoulement des microorganismes.The brewing arms 8 are equipped at their distal end with a dome 13 forming a deflector, for the purpose of forming a groove in the mass of the substrate to facilitate the flow of microorganisms.
Sur l'exemple de réalisation illustré, la cuve 1 est étanche et est munie à son sommet d'une trémie 9 obturable, notamment par un couvercle 10 ou analogue, pour l'admission du granulat. Une trappe 11 est avantageusement ménagée à la base de la cuve 1 pour l'évacuation du produit traitant préparé. In the exemplary embodiment illustrated, the vessel 1 is sealed and is provided at its top with a hopper 9 closable, in particular by a lid 10 or the like, for the admission of the granulate. A trap 11 is advantageously provided at the base of the tank 1 for the evacuation of the prepared treatment product.

Claims

Revendications claims
1.- Appareil pour la préparation d'un produit traitant destiné au traitement des sols souillés et/ou des eaux usées, ce produit traitant étant composé d'un granulat alvéolé formant substrat de nidification pour des microorganismes, caractérisé en ce qu'il comprend :1. Apparatus for the preparation of a treating product for the treatment of contaminated soils and / or wastewater, this treating product being composed of a honeycomb granulate forming a nesting substrate for microorganisms, characterized in that it comprises :
*) une cuve (1) fermée de réception du granulat et des microorganismes, *) au moins une canule (4) d'admission sous pression des microorganismes à l'intérieur de la cuve (1), *) au moins une branche rotative (4,6,8) de brassage à l'intérieur de la cuve*) a closed tank (1) for receiving granulate and microorganisms, *) at least one cannula (4) for pressurized admission of the microorganisms inside the tank (1), *) at least one rotating branch (4,6,8) brewing inside the tank
(1) du granulat et des microorganismes.(1) granulate and microorganisms.
2.- Appareil selon la revendication 1 , caractérisé en ce que la canule (4) est plongeante à l'intérieur de la cuve (1) et est en relation par l'intermédiaire d'un conduit d'admission (3) avec au moins un réservoir (2) de microorganismes équipé de moyens (5) d'évacuation sous pression des microorganismes hors du réservoir (2) vers le conduit d'admission (3).2. Apparatus according to claim 1, characterized in that the cannula (4) is immersed inside the vessel (1) and is connected via an intake duct (3) with the least one reservoir (2) of microorganisms equipped with means (5) for evacuating microorganisms out of the reservoir (2) to the intake duct (3).
3.- Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la branche (4,6,8) est plongeante à l'intérieur de la cuve (1) et comporte à son extrémité proximale un arbre d'entraînement (6) qui émerge hors de la cuve (1) et qui est relié à un organe moteur (7) externe à la cuve (1), cet arbre d'entraînement (6) étant prolongé à son extrémité distale vers l'intérieur de la cuve par au moins un bras de brassage (8).3. Apparatus according to any one of the preceding claims, characterized in that the limb (4,6,8) is immersed inside the vessel (1) and has at its proximal end a drive shaft ( 6) which emerges from the vessel (1) and which is connected to a motor member (7) external to the vessel (1), the drive shaft (6) being extended at its distal end towards the inside of the vessel (1). tank by at least one stirring arm (8).
4.- Appareil selon la revendication 3, caractérisé en ce que la branche (4,6,8) comporte à son extrémité distale une pluralité de bras de brassage (8).4. Apparatus according to claim 3, characterized in that the branch (4,6,8) has at its distal end a plurality of stirring arms (8).
5.- Appareil selon la revendication 4, caractérisé en ce que les bras de brassage (8) sont radialement répartis sur la branche (4,6,8).5. Apparatus according to claim 4, characterized in that the stirring arms (8) are radially distributed on the branch (4,6,8).
6.- Appareil selon l'une quelconque des revendications 4 et 5, caractérisé en ce que les bras de brassage (8) sont équipés d'un déflecteur (13) pour la formation d'un sillon à l'intérieur du substrat lors de leur mise en rotation. 6. Apparatus according to any one of claims 4 and 5, characterized in that the stirring arms (8) are equipped with a deflector (13) for forming a groove inside the substrate during their rotation.
7.- Appareil selon l'une quelconque des revendication précédentes, caractérisé en ce que la cuve (1) est une cuve étanche munie d'une trémie (9) obturable d'admission du granulat.7. Apparatus according to any one of the preceding claims, characterized in that the vessel (1) is a sealed tank provided with a hopper (9) closable inlet granule.
8.- Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la canule (4) est constituée d'un conduit microperforé.8. Apparatus according to any one of the preceding claims, characterized in that the cannula (4) consists of a microperforated conduit.
9.- Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la canule (4) et la branche (4,6,8) constituent un même organe. 9. Apparatus according to any one of the preceding claims, characterized in that the cannula (4) and the branch (4,6,8) constitute the same organ.
PCT/FR2005/003069 2004-12-07 2005-12-07 Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater WO2006061515A1 (en)

Applications Claiming Priority (2)

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FR0412973A FR2878765B1 (en) 2004-12-07 2004-12-07 APPARATUS FOR THE NIDIFICATION OF MICROORGANISMS IN AN ALVEOLE GRANULATE FOR THE TREATMENT OF SOIL SOIL AND / OR WASTEWATER
FR0412973 2004-12-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339764A1 (en) * 1983-11-03 1985-05-23 B. Braun Melsungen Ag, 3508 Melsungen DEVICE FOR PRODUCING BIOCATALYST BEADS
JPS6269987A (en) * 1985-09-20 1987-03-31 Hitachi Plant Eng & Constr Co Ltd Production unit for pellet of immobilized microorganism
US4800160A (en) * 1985-08-06 1989-01-24 Mitsui Toatsu Chemical, Incorporated Process and apparatus for producing immobilized enzyme granules
DE4243627A1 (en) * 1992-12-22 1994-06-23 Leca Deutschland Gmbh Open pored mineral bulk material carrying immobilised microorganisms
DE20214291U1 (en) * 2002-09-14 2003-01-02 Romaco Ag Frymakoruma Rheinfel Mixer assembly, for viscous substances, has venturi mixer paddles on vertical rotating shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339764A1 (en) * 1983-11-03 1985-05-23 B. Braun Melsungen Ag, 3508 Melsungen DEVICE FOR PRODUCING BIOCATALYST BEADS
US4800160A (en) * 1985-08-06 1989-01-24 Mitsui Toatsu Chemical, Incorporated Process and apparatus for producing immobilized enzyme granules
JPS6269987A (en) * 1985-09-20 1987-03-31 Hitachi Plant Eng & Constr Co Ltd Production unit for pellet of immobilized microorganism
DE4243627A1 (en) * 1992-12-22 1994-06-23 Leca Deutschland Gmbh Open pored mineral bulk material carrying immobilised microorganisms
DE20214291U1 (en) * 2002-09-14 2003-01-02 Romaco Ag Frymakoruma Rheinfel Mixer assembly, for viscous substances, has venturi mixer paddles on vertical rotating shaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 267 (C - 443) 28 August 1987 (1987-08-28) *

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FR2878765B1 (en) 2008-01-11

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