WO2011015736A1 - Drainage geocomposite for biological anti-clogging, and method for using same - Google Patents

Drainage geocomposite for biological anti-clogging, and method for using same Download PDF

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Publication number
WO2011015736A1
WO2011015736A1 PCT/FR2010/051196 FR2010051196W WO2011015736A1 WO 2011015736 A1 WO2011015736 A1 WO 2011015736A1 FR 2010051196 W FR2010051196 W FR 2010051196W WO 2011015736 A1 WO2011015736 A1 WO 2011015736A1
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WO
WIPO (PCT)
Prior art keywords
geocomposite
mini
fibers
drains
perforated
Prior art date
Application number
PCT/FR2010/051196
Other languages
French (fr)
Inventor
Yves Durkheim
Original Assignee
Afitex International
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 Afitex International filed Critical Afitex International
Priority to MA34574A priority Critical patent/MA33460B1/en
Publication of WO2011015736A1 publication Critical patent/WO2011015736A1/en
Priority to ZA2012/00648A priority patent/ZA201200648B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means

Definitions

  • the present invention relates to the field of geocomposites.
  • the present invention more particularly proposes a geocomposite for biological anti-clogging drainage.
  • geocomposite materials for soil drainage.
  • Such materials consist of draining geotextiles often including a geospacer, all between two layers of geotextiles filtering.
  • the geospacer consists of annealed and perforated tubes, helical springs or an axis provided with fins, thus providing continuous passages for the drainage of the interstitial water.
  • the geocomposite may consist of a filtering layer and a draining layer.
  • the geospacer is most often in a gusset between the two layers.
  • the layers, which are both draining and filtering, are nonwovens of needled fibers and are then bonded together either by gluing or by sewing cords running along the geo-repellents in order to create the geocomposite.
  • Patent FR 1 614 812 proposes a drainage geocomposite comprising a draining layer on which are deposited mini-drains Perforated rings and a filter sheet covering the mini-drains.
  • the object of this invention is to provide a geocomposite having an internal shear strength that can be sustained by having uniform porosity and good water evacuation.
  • this type of geocomposite does not solve the problem of biological clogging of the geocomposite filter.
  • Patent FR 2 558 925 proposes a drainage pipe with a filtering coating made of natural fibers such as coconut fibers.
  • this type of filter coating can rot with time.
  • a copper wire is incorporated or wound into the coating.
  • this invention does not teach geocomposite and does not solve the problem of biological clogging of the filter of a geocomposite.
  • US 2005/0103707 relates to a reactive geocomposite for treating contaminants in soil or water to allow the passage of substantially uncontaminated water through this geocomposite.
  • This invention does not teach a geocomposite that solves the problem of biological clogging of the geocomposite filter.
  • the present invention therefore aims to overcome one or more of the disadvantages of the prior art by defining a geocomposite guaranteeing a biological anti-clogging.
  • the invention relates to a geocomposite comprising a draining layer on which perforated annular perforated mini-drains are arranged parallel to one another and at least one filtering sheet covering the perforated annular minidrains, characterized in that the filtering sheet is composed of fibers in which at least one antibacterial and / or bactericidal and / or fungicidal active ingredient is embedded.
  • the annealed mini-drains have oval perforations between their corrugations.
  • the antibacterial and / or bactericidal and / or fungicidal active ingredient embedded in the fibers making up the filtering layer is present on the surface and / or in the core of the fibers.
  • the filtering web is nonwoven.
  • the draining web is nonwoven.
  • the sheets and the mini-drains are resistant to an acidic or basic environment.
  • the fibers composing the filtering web have a titration or a linear density of between 4 dtex and 1 10 dtex.
  • FIG. 1 shows a section of a discharge using the geocomposite according to the invention.
  • FIG. 2 shows a section of the geocomposite in a plane perpendicular to the mini-drains.
  • FIG. 3 shows a perspective view of a mini-drain according to the invention.
  • the proposed invention avoids the clogging of a geocomposite (0).
  • the mini-drains (02) can be distributed in parallel so that there is 1 mini-drain (02) every 2 m of geocomposite width and 4 mini-drains per meter of width of the geocomposite.
  • mini-drains (02) are intended to capture leachate for drainage. They are resistant to pressures up to 750 kPa which corresponds to about 60 m of waste height (1) above the mini-drain.
  • the diameter of the mini-drains (02) is 25 mm.
  • the diameter of the mini-drains (02) may have diameters of between 10 mm and 25 mm.
  • mini-drains (02) have perforations (021) ovalized between the corrugations (022). This type of perforation (021) makes it possible to limit the resistance to the entry of liquid and thus to limit the clogging of the perforations (021).
  • the filter web (01) is composed of fibers which have been extruded with at least one antibacterial and / or bactericidal and / or fungicidal active principle.
  • This active ingredient can be embedded in the fibers so as to be present on the surface of the fibers and in the core of the fibers. This distribution allows medium and long term migration of antibacterial agents and / or bactericidal and / or fungicidal on the surface of the fibers, making the product effective in the long term.
  • the geocomposite (0) being used at the bottom of the bin where the waste (1) is stored, the average temperature at this level is about 50 ° C.
  • the main molecules composing the fibers for example the polypropylene molecules, will set in motion seeking to express the antibacterial and / or bactericidal and / or fungicidal active ingredient.
  • the filtering web (01) is composed of fibers of large diameter which corresponds to a fiber titration or a linear density of the yarns between 4 dtex and 1 10 dtex, considering that 1 dtex corresponds to
  • the filter web (01) and the draining web (03) are nonwoven.
  • the filter opening of the filter web (01) is between 80 ⁇ m and 250 ⁇ m.
  • the filtration (01) and drainage (03) and mini-drains (02) are resistant to an acidic or basic environment.
  • This geocomposite (0) advantageously reduces the granular layer normally disposed at the bottom of the bins where the waste (1) is stored. Ordinarily, this granular layer (4) consisting essentially of pebbles must have a thickness of about 50 cm.
  • the installation of the geocomposite (0) according to the invention at the bottom of the rack makes it possible to reduce the thickness of the granular layer (4) from approximately 50 cm to 25 cm.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to a geocomposite (0) inlcuding a draining layer (03) on which perforated (021) ringed mini-drains (02) are arranged parallel to one another, and at least one filtering layer (01) covering the perforated ringed mini-drains (02). Said geocomposite (0) is characterized in that the filtering layer (01) consists of fibers in which at least one antibacterial and/or bactericidal and/or fungicidal active principle is embedded.

Description

Géocomposite de drainage assurant un anti-colmatage biologique et son procédé d'utilisation  Drainage geocomposite ensuring biological anti-clogging and its method of use
La présente invention concerne le domaine des géocomposites. La présente invention propose plus particulièrement un géocomposite de drainage anti-colmatage biologique. The present invention relates to the field of geocomposites. The present invention more particularly proposes a geocomposite for biological anti-clogging drainage.
Il est connu de l'art antérieur divers matériaux géocomposites destinés au drainage des sols. De tels matériaux sont constitués de géotextiles drainants incluant bien souvent un géoespaceur, le tout compris entre deux nappes de géotextiles filtrants. Le géoespaceur est constitué dans le cas présent soit de tubes annelés et perforés, soit de ressorts hélicoïdaux ou d'un axe muni d'ailettes, fournissant ainsi des passages continus de drainage de l'eau interstitielle.  It is known from the prior art various geocomposite materials for soil drainage. Such materials consist of draining geotextiles often including a geospacer, all between two layers of geotextiles filtering. In this case, the geospacer consists of annealed and perforated tubes, helical springs or an axis provided with fins, thus providing continuous passages for the drainage of the interstitial water.
Le géocomposite peut être constitué d'une nappe filtrante et d'une nappe drainante. Le géoespaceur se situe le plus souvent dans un gousset compris entre les deux nappes. Les nappes, aussi bien drainantes que filtrantes sont des non-tissés de fibres aiguilletées et sont ensuite liées entre elles soit par collage, soit par des cordons de couture qui courent le long des géoespaceurs afin de créer le géocomposite.  The geocomposite may consist of a filtering layer and a draining layer. The geospacer is most often in a gusset between the two layers. The layers, which are both draining and filtering, are nonwovens of needled fibers and are then bonded together either by gluing or by sewing cords running along the geo-repellents in order to create the geocomposite.
De telles réalisations présentent toutefois certains inconvénients. Dans le cas des stockages de déchets, il est intéressant d'installer des géocomposites au fond des casiers dans lesquels sont stockés les déchets afin de drainer les lixiviats qui proviennent des déchets et qui percolent à travers ceux-ci vers le fond des casiers. Or, en règle générale, les lixiviats provenant de déchets sont chargés en particules bactériologiques et fongiques qui à long terme peuvent colmater le filtre du géocomposite. Ceci a pour conséquence : l'arrêt du passage de liquide au travers du filtre et l'inefficacité à terme du géocomposite.  Such embodiments, however, have certain disadvantages. In the case of waste storage, it is interesting to install geocomposites at the bottom of the bins in which the waste is stored in order to drain the leachates that come from the waste and percolate through them to the bottom of the bins. However, as a general rule, leachates from waste are loaded with bacteriological and fungal particles that in the long run can clog the filter of the geocomposite. This has the consequence of: stopping the passage of liquid through the filter and the ultimately inefficiency of the geocomposite.
Le brevet FR 1 614 812 propose un géocomposite de drainage comportant une nappe drainante sur laquelle sont déposés des mini-drains annelés perforés et une nappe filtrante recouvrant les mini-drains. Le but de cette invention est de proposer un géocomposite présentant une résistance aux cisaillements internes qu'il peut subir en ayant une porosité uniforme et une bonne évacuation de l'eau. Or, ce type de géocomposite ne résout pas le problème de colmatage biologique du filtre du géocomposite. Patent FR 1 614 812 proposes a drainage geocomposite comprising a draining layer on which are deposited mini-drains Perforated rings and a filter sheet covering the mini-drains. The object of this invention is to provide a geocomposite having an internal shear strength that can be sustained by having uniform porosity and good water evacuation. However, this type of geocomposite does not solve the problem of biological clogging of the geocomposite filter.
Le brevet FR 2 558 925 propose un tuyau de drainage avec un enrobage filtrant en fibres naturelles telles que des fibres de coco. Or, ce type d'enrobage filtrant peut pourrir avec le temps. Pour palier cela, un fil de cuivre est incorporé ou enroulé dans l'enrobage. Or, cette invention n'enseigne pas de géocomposite et ne résout pas le problème de colmatage biologique du filtre d'un géocomposite.  Patent FR 2 558 925 proposes a drainage pipe with a filtering coating made of natural fibers such as coconut fibers. However, this type of filter coating can rot with time. To overcome this, a copper wire is incorporated or wound into the coating. However, this invention does not teach geocomposite and does not solve the problem of biological clogging of the filter of a geocomposite.
Le brevet US 2005/0103707 concerne un géocomposite réactif pour traiter des contaminants dans le sol ou dans l'eau afin de permettre le passage de l'eau essentiellement non-contaminée à travers ce géocomposite. Cette invention n'enseigne pas de géocomposite qui résout le problème de colmatage biologique du filtre du géocomposite.  US 2005/0103707 relates to a reactive geocomposite for treating contaminants in soil or water to allow the passage of substantially uncontaminated water through this geocomposite. This invention does not teach a geocomposite that solves the problem of biological clogging of the geocomposite filter.
La présente invention a donc pour objet de pallier un ou plusieurs des inconvénients de l'art antérieur en définissant un géocomposite garantissant un anti-colmatage biologique.  The present invention therefore aims to overcome one or more of the disadvantages of the prior art by defining a geocomposite guaranteeing a biological anti-clogging.
À cet effet, l'invention concerne un géocomposite comprenant une nappe drainante sur laquelle sont disposés des mini-drains annelés perforés parallèles entre eux et au moins une nappe filtrante recouvrant les minidrains annelés perforés, caractérisé en ce que la nappe filtrante est composée de fibres dans lesquelles est noyé au moins un principe actif antibactérien et/ou bactéricide et/ou fongicide.  To this end, the invention relates to a geocomposite comprising a draining layer on which perforated annular perforated mini-drains are arranged parallel to one another and at least one filtering sheet covering the perforated annular minidrains, characterized in that the filtering sheet is composed of fibers in which at least one antibacterial and / or bactericidal and / or fungicidal active ingredient is embedded.
Selon une autre particularité, les mini-drains annelés possèdent des perforations ovalisées entre leurs annelures.  According to another feature, the annealed mini-drains have oval perforations between their corrugations.
Selon une autre particularité, le principe actif antibactérien et/ou bactéricide et/ou fongicide noyé dans les fibres composant la nappe filtrante est présent en surface et/ou au cœur des fibres. Selon une autre particularité, la nappe filtrante est non tissée. According to another feature, the antibacterial and / or bactericidal and / or fungicidal active ingredient embedded in the fibers making up the filtering layer is present on the surface and / or in the core of the fibers. According to another particularity, the filtering web is nonwoven.
Selon une autre particularité, la nappe drainante est non tissée.  According to another feature, the draining web is nonwoven.
Selon une autre particularité, les nappes et les mini-drains sont résistants à un milieu acide ou basique.  According to another feature, the sheets and the mini-drains are resistant to an acidic or basic environment.
Selon une autre particularité, les fibres composant la nappe filtrante possèdent un titrage ou une masse linéique compris entre 4 dtex et 1 10 dtex.  According to another feature, the fibers composing the filtering web have a titration or a linear density of between 4 dtex and 1 10 dtex.
D'autres particularités et avantages de la présente invention apparaîtront plus clairement à la lecture de la description ci-après, faite en référence aux dessins annexés : Other features and advantages of the present invention will appear more clearly on reading the description below, made with reference to the accompanying drawings:
- la figure 1 représente une coupe d'une décharge utilisant le géocomposite selon l'invention.  - Figure 1 shows a section of a discharge using the geocomposite according to the invention.
- la figure 2 représente une coupe du géocomposite selon un plan perpendiculaire aux mini-drains.  - Figure 2 shows a section of the geocomposite in a plane perpendicular to the mini-drains.
- la figure 3 représente une vue en perspective d'un mini-drain selon l'invention.  - Figure 3 shows a perspective view of a mini-drain according to the invention.
L'invention proposée permet d'éviter le colmatage d'un géocomposite (0).  The proposed invention avoids the clogging of a geocomposite (0).
Dans le domaine des stockages de déchets (1 ) représenté figure 1 , il est nécessaire de récupérer les lixiviats produits par ces déchets (1 ) ou ceux produits après l'aspersion des déchets (1 ), par exemple, par un solvant ou un acide. Ces lixiviats percolent au fond des casiers dans lesquels sont stockés les déchets (1 ) pour être récupéré par un système d'évacuation (2) afin qu'ils ne pénètrent pas le sol (3) dans lequel les déchets (2) sont enterrés. Or, en règle générale, les lixiviats provenant de déchets (1 ) sont chargés en particules bactériologiques et fongiques qui à long terme peuvent colmater le filtre du géocomposite (0). Ceci a pour conséquence : l'arrêt du passage de l'eau au travers du filtre et l'inefficacité à terme du géocomposite (0). En référence aux figures 2 et 3, la présente invention enseigne un géocomposite (O) qui comprend une nappe (03) drainante. Sur cette nappeIn the field of waste storage (1) shown in Figure 1, it is necessary to recover the leachates produced by these wastes (1) or those produced after the spraying of waste (1), for example, with a solvent or an acid . These leachates percolate at the bottom of the bins in which are stored the waste (1) to be recovered by an evacuation system (2) so that they do not penetrate the soil (3) in which the waste (2) are buried. However, as a general rule, leachates from waste (1) are loaded with bacteriological and fungal particles which in the long term can clog the filter of the geocomposite (0). This has the consequence of: stopping the passage of water through the filter and the ineffectiveness of the geocomposite (0). With reference to FIGS. 2 and 3, the present invention teaches a geocomposite (O) which comprises a draining sheet (03). On this tablecloth
(03) drainante sont disposés des mini-drains (02) annelés perforés parallèles entre eux et au moins une nappe (01 ) filtrante recouvrant les mini-drains (02) annelés perforés. (03) are draining perforated parallel mini-drains (02) perforated parallel to each other and at least one filter web (01) covering the perforated annular mini-drains (02).
De façon non limitative, les mini-drains (02) peuvent être répartis parallèlement de façon à ce qu'il y ait 1 mini-drain (02) tous les 2 m de largeur du géocomposite et 4 mini-drains par mètre de largeur du géocomposite.  In a nonlimiting manner, the mini-drains (02) can be distributed in parallel so that there is 1 mini-drain (02) every 2 m of geocomposite width and 4 mini-drains per meter of width of the geocomposite.
Ces mini-drains (02) ont pour but de capter les lixiviats en vue d'un drainage. Ils sont résistants à des pressions allant jusqu'à 750 kPa ce qui correspond à environ 60 m de hauteur de déchets (1 ) au dessus du mini drain.  These mini-drains (02) are intended to capture leachate for drainage. They are resistant to pressures up to 750 kPa which corresponds to about 60 m of waste height (1) above the mini-drain.
Dans un mode de réalisation, de façon non limitative, afin d'avoir une optimisation du flux du lixiviat, le diamètre des mini-drains (02) est de 25 mm.  In one embodiment, without limitation, in order to have an optimization of the leachate flow, the diameter of the mini-drains (02) is 25 mm.
Dans d'autres modes de réalisation, le diamètre des mini-drains (02) peuvent avoir des diamètres compris entre 10 mm et 25 mm.  In other embodiments, the diameter of the mini-drains (02) may have diameters of between 10 mm and 25 mm.
En outre, ces mini-drains (02) possèdent des perforations (021 ) ovalisées entre les annelures (022). Ce type de perforation (021 ) permet de limiter la résistance à l'entrée de liquide et ainsi de limiter le colmatage des perforations (021 ).  In addition, these mini-drains (02) have perforations (021) ovalized between the corrugations (022). This type of perforation (021) makes it possible to limit the resistance to the entry of liquid and thus to limit the clogging of the perforations (021).
La nappe (01 ) filtrante est composée de fibres qui ont été extrudées avec au moins un principe actif antibactérien et/ou bactéricide et/ou fongicide. Ce principe actif peut être noyé dans les fibres de façon à être présent sur la surface des fibres et au cœur des fibres. Cette répartition permet à moyen et long termes une migration des agents antibactériens et/ou bactéricides et/ou fongicides à la surface des fibres, rendant le produit efficace à long terme.  The filter web (01) is composed of fibers which have been extruded with at least one antibacterial and / or bactericidal and / or fungicidal active principle. This active ingredient can be embedded in the fibers so as to be present on the surface of the fibers and in the core of the fibers. This distribution allows medium and long term migration of antibacterial agents and / or bactericidal and / or fungicidal on the surface of the fibers, making the product effective in the long term.
Le géocomposite (0) étant utilisé en fond de casier où les déchets (1 ) sont stockés, la température moyenne à ce niveau est d'environ 50 °C. Les molécules principales composant les fibres, par exemple les molécules de polypropylène, vont se mettre en mouvement cherchant à exprimer le principe actif antibactérien et/ou bactéricide et/ou fongicide. The geocomposite (0) being used at the bottom of the bin where the waste (1) is stored, the average temperature at this level is about 50 ° C. The main molecules composing the fibers, for example the polypropylene molecules, will set in motion seeking to express the antibacterial and / or bactericidal and / or fungicidal active ingredient.
En outre, la nappe (01 ) filtrante est composée de fibres de diamètre important qui correspond à un titrage des fibres ou une masse linéique des fils compris entre 4 dtex et 1 10 dtex en considérant que 1 dtex correspond à In addition, the filtering web (01) is composed of fibers of large diameter which corresponds to a fiber titration or a linear density of the yarns between 4 dtex and 1 10 dtex, considering that 1 dtex corresponds to
1 mg de matière composant les fibres pour 1 m de fibre. Ceci permet d'avoir une grande ouverture de filtration et d'avoir la composante (04) de la vitesse de perméabilité normale au plan du géocomposite (0) assez importante pour que cela influe sur la durée de contact entre le géocomposite (0) et le lixiviat.1 mg of material composing the fibers for 1 m of fiber. This makes it possible to have a large filtration aperture and to have the component (04) of the normal permeability velocity in the geocomposite (0) plane large enough for this to affect the contact time between the geocomposite (0) and leachate.
En réduisant cette durée de contact, le colmatage dû aux bactéries ou aux champignons est réduit. By reducing this contact time, clogging due to bacteria or fungi is reduced.
La nappe (01 ) filtrante et la nappe (03) drainante sont non tissées. L'ouverture de filtration de la nappe (01 ) filtrante est comprise entre 80 μm et 250 μm. En outre, les nappes filtrante (01 ) et drainante (03) et les mini-drains (02) sont résistants à un milieu acide ou basique.  The filter web (01) and the draining web (03) are nonwoven. The filter opening of the filter web (01) is between 80 μm and 250 μm. In addition, the filtration (01) and drainage (03) and mini-drains (02) are resistant to an acidic or basic environment.
Ce géocomposite (0) permet avantageusement de diminuer la couche granulaire disposé normalement au fond des casiers où sont stockés les déchets (1 ). Ordinairement, cette couche granulaire (4) composée essentiellement de cailloux doit avoir une épaisseur de 50 cm environ. L'installation du géocomposite (0) selon l'invention au fond du casier permet de réduire l'épaisseur de la couche granulaire (4) de 50 cm à 25 cm environ.  This geocomposite (0) advantageously reduces the granular layer normally disposed at the bottom of the bins where the waste (1) is stored. Ordinarily, this granular layer (4) consisting essentially of pebbles must have a thickness of about 50 cm. The installation of the geocomposite (0) according to the invention at the bottom of the rack makes it possible to reduce the thickness of the granular layer (4) from approximately 50 cm to 25 cm.
Il doit être évident pour les personnes versées dans l'art que la présente invention permet des modes de réalisation sous de nombreuses autres formes spécifiques sans l'éloigner du domaine d'application de l'invention comme revendiqué. Par conséquent, les présents modes de réalisation doivent être considérés à titre d'illustration, mais peuvent être modifiés dans le domaine défini par la portée des revendications jointes, et l'invention ne doit pas être limitée aux détails donnés ci-dessus. It should be obvious to those skilled in the art that the present invention allows embodiments in many other specific forms without departing from the scope of the invention as claimed. Therefore, the present embodiments should be considered by way of illustration, but may be modified within the scope defined by the scope of the appended claims, and the invention should not be limited to the details given above.

Claims

REVENDICATIONS
1. Géocomposite (0) comprenant au moins une nappe (03) drainante sur laquelle sont disposés des mini-drains (02) annelés perforés (021 ) parallèles entre eux et au moins une nappe (01 ) filtrante recouvrant les minidrains (02) annelés perforés, caractérisé en ce que la nappe (01 ) filtrante est composée de fibres dans lesquelles est noyé au moins un principe actif antibactérien et/ou bactéricide et/ou fongicide. 1. Geocomposite (0) comprising at least one draining ply (03) on which perforated annular perforated mini-drains (02) are arranged parallel to each other and at least one filtering ply (01) covering the corrugated minidrains (02). perforated, characterized in that the filter web (01) is composed of fibers in which is embedded at least one antibacterial and / or bactericidal and / or fungicidal active ingredient.
2. Géocomposite (0) selon la revendication 1 , caractérisé en ce que les mini-drains (02) annelés possèdent des perforations (021 ) ovalisées entre leurs annelures (022).  2. Geocomposite (0) according to claim 1, characterized in that the annealed mini-drains (02) have oval perforations (021) between their corrugations (022).
3. Géocomposite (0) selon la revendication 1 , caractérisé en ce que le principe actif antibactérien et/ou bactéricide et/ou fongicide noyé dans les fibres composant la nappe (01 ) filtrante est présent en surface et/ou au cœur des fibres.  3. Geocomposite (0) according to claim 1, characterized in that the antibacterial and / or bactericidal and / or fungicidal active ingredient embedded in the fibers making up the filter web (01) is present on the surface and / or in the core of the fibers.
4. Géocomposite (0) selon la revendication 1 , caractérisé en ce que la nappe (01 ) filtrante est non tissée.  4. Geocomposite (0) according to claim 1, characterized in that the web (01) filtering is nonwoven.
5. Géocomposite (0) selon la revendication 1 , caractérisé en ce que la nappe (03) drainante est non tissée.  5. Geocomposite (0) according to claim 1, characterized in that the web (03) draining is nonwoven.
6. Géocomposite selon la revendication 1 , caractérisé en ce que les nappes (01 , 03) et les mini-drains (02) sont résistants à un milieu acide ou basique.  6. Geocomposite according to claim 1, characterized in that the plies (01, 03) and the mini-drains (02) are resistant to an acidic or basic environment.
7. Géocomposite (0) selon la revendication 1 , caractérisé en ce que les fibres composant la nappe (01 ) filtrante possèdent un titrage ou une masse linéique compris entre 4 dtex et 110 dtex.  7. Geocomposite (0) according to claim 1, characterized in that the fibers comprising the filter web (01) have a titration or a linear density between 4 dtex and 110 dtex.
PCT/FR2010/051196 2009-08-04 2010-06-16 Drainage geocomposite for biological anti-clogging, and method for using same WO2011015736A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MA34574A MA33460B1 (en) 2009-08-04 2010-06-16 DRAINAGE GEOCOMPOSITE PROVIDING BIOLOGICAL ANTI-CLAIMING AND METHOD OF USE
ZA2012/00648A ZA201200648B (en) 2009-08-04 2012-01-25 Drainage geocomposite for biological anti-clogging, and method for using same

Applications Claiming Priority (2)

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FR0903857A FR2948949B1 (en) 2009-08-04 2009-08-04 DRAINAGE GEOCOMPOSITE PROVIDING BIOLOGICAL ANTI-COLLATION AND METHOD OF USE
FR09/03857 2009-08-04

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WO2011015736A1 true WO2011015736A1 (en) 2011-02-10

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PCT/FR2010/051196 WO2011015736A1 (en) 2009-08-04 2010-06-16 Drainage geocomposite for biological anti-clogging, and method for using same

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MA (1) MA33460B1 (en)
WO (1) WO2011015736A1 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015086628A2 (en) 2013-12-09 2015-06-18 Afitex International Soil-treatment system, geocomposite for such a system, and soil consolidation method
WO2023098998A1 (en) 2021-12-02 2023-06-08 Afitex International System and geocomposite for fluid drainage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558925A1 (en) 1984-01-27 1985-08-02 Oltmanns Ziegel & Kunststoff Drainpipe with a filter coating of natural fibres and method of manufacture
US20050103707A1 (en) 2003-11-19 2005-05-19 Amcol International Corporation Contaminant-reactive geocomposite mat and method of manufacture and use
EP1614812A1 (en) 2004-07-09 2006-01-11 Ducal S.a.r.l. Geocomposite membrane for drainage and fabrication method therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558925A1 (en) 1984-01-27 1985-08-02 Oltmanns Ziegel & Kunststoff Drainpipe with a filter coating of natural fibres and method of manufacture
US20050103707A1 (en) 2003-11-19 2005-05-19 Amcol International Corporation Contaminant-reactive geocomposite mat and method of manufacture and use
EP1614812A1 (en) 2004-07-09 2006-01-11 Ducal S.a.r.l. Geocomposite membrane for drainage and fabrication method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015086628A2 (en) 2013-12-09 2015-06-18 Afitex International Soil-treatment system, geocomposite for such a system, and soil consolidation method
WO2023098998A1 (en) 2021-12-02 2023-06-08 Afitex International System and geocomposite for fluid drainage

Also Published As

Publication number Publication date
MA33460B1 (en) 2012-07-03
FR2948949B1 (en) 2011-08-05
ZA201200648B (en) 2012-10-31
FR2948949A1 (en) 2011-02-11

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