EP2184148B1 - Compartmentalised tank - Google Patents
Compartmentalised tank Download PDFInfo
- Publication number
- EP2184148B1 EP2184148B1 EP20080168492 EP08168492A EP2184148B1 EP 2184148 B1 EP2184148 B1 EP 2184148B1 EP 20080168492 EP20080168492 EP 20080168492 EP 08168492 A EP08168492 A EP 08168492A EP 2184148 B1 EP2184148 B1 EP 2184148B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- partitions
- compartmentalised
- partition
- wall
- 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.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/004—Contents retaining means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0043—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with gaskets or sealing elements, e.g. for tunnelings or man holes
Definitions
- the present invention relates to a compartmentalization method for tanks and compartmentalized tanks used in particular in the field of purification plants.
- the purification of domestic water can be carried out through purification plants which generally comprise several tanks or compartments.
- the water passes successively through the compartments each integrating a different function, for example the degreasing of water, microbiological degradation, decantation, etc.
- the treatment plants are usually made from a standard concrete or plastic tank on the market, which is adapted by first installing each of the concrete or synthetic bulkheads separating the different compartments. The various partitions must then be fixed in the tank and the installation of seals is necessary in order to obtain a seal between the different compartments.
- An example of tanks of this type is described in EP 1 719 738 A1 . This sealing is all the more important as the differential pressures exerted on the partitions are high.
- the object of the present invention is therefore to provide a compartmentalized vessel with a reduced weight, while being waterproof.
- the equipment of these tanks to turn them into a treatment plant should be easy and fast, with the least risk of accidents for the operator.
- the present invention relates to a compartmentalized molded vessel having a bottom and peripheral walls.
- This tank also comprises one or more partitions of fine and / or light material whose edges are sealed by molding in the wall and the bottom of the tank, so as to obtain a perfect seal between the compartments.
- the bottom and the peripheral wall are made of concrete and / or fiber cement and the partition (s) made of fine and / or light material are made of stainless steel and / or of a rotproof synthetic material.
- the invention has three major advantages: the first is to have a compartmentalized vessel, the edges of the partitions are embedded in the tank during molding, so as to obtain an almost perfect seal, both between the wall of the tank and the partitions and between the bottom of the tank and the partitions.
- the second advantage is that the invention by molding sealing allows the use of thinner partitions, which considerably reduces the weight of the compartmentalized tanks and therefore the costs of transportation and installation.
- the insertion of partitions directly during molding does not significantly increase the manufacture of the tank, but make superfluous their subsequent installation in the workshop or at the customer. Indeed, as the tank is molded with the partitions inserted, this results in a lighter and ready-to-use compartmentalized tank that can be delivered directly to the customer by the tank manufacturer. The use of fixing means and the descent of operators in the tank to ensure the attachment are also superfluous, thus improving safety.
- compartmentalized tanks that is to say the peripheral wall and the bottom, are molded of concrete and / or fiber cement.
- suitable additives may be added such as, for example, stiffening compounds, fibers, setting accelerators, water repellents, polymeric resins or combinations thereof.
- the partitions used are lightweight partitions compared to concrete walls.
- they are made of thin and / or light material, that is to say they can be made of a relatively heavy material, but then having a reduced thickness (and thus forming light partitions), such as for example stainless steel partitions, or the material used is fine and light, such as rot-proof synthetic materials such as PVC, high-density polyethylene, polyethylene, polyester, polypropylene, nylon or any other material adapted.
- rot-proof synthetic materials such as PVC, high-density polyethylene, polyethylene, polyester, polypropylene, nylon or any other material adapted.
- foamed materials which are light but which then present generally a larger thickness. All combinations of these materials are also possible.
- the thickness of the material used obviously depends on the material used and the stresses provided, however, it will normally be between 1 mm and 3 cm, preferably between 2 mm and 2 cm.
- stiffening means such as grooves, grooves, etc.
- Partitions of fine material according to the invention can take any form suitable for use such as straight, curved, corrugated, etc.
- the edges of the partitions may be continuous with the remainder of the partition, that is to say have a shape (or section) substantially identical to the rest of the partition.
- a substantially straight partition whose edges are also substantially straight (sharp edges).
- the edges may take any other form suitable for use.
- Perfect or near perfect sealing means a seal between the partitions and the wall of the tank which is sufficient so that the liquid contained in a compartment does not flow significantly between the partitions and the bottom or the wall of the tank. the tank, and this both in the presence of low differential pressures (eg same level of liquid in the compartments), as in the presence of high differential pressures (which may already occur by example of the emptying or filling of a compartment). It is clear that this configuration does not exclude the passage of liquids through holes, notches, orifices, etc. specially designed for this purpose and for the intended use, such as in the case of a wastewater treatment plant.
- compartmentalized tanks according to the invention generally have a chemical incompatibility between the material used for the molding of the tank and that of the partition, so that there is generally no sufficient chemical bond between the two materials, unlike compartmentalized tanks molded in one piece with identical material.
- an advantageous embodiment of the present invention proposes to use partitions whose edges sealed in the tank have one or more means of anchoring or blocking mechanical. These anchoring means may be arranged regularly or not, that is to say they can be all around the useful periphery of the sealed partition in the tank, or only a part.
- anchoring means any means or tool for blocking the partition in the wall and the bottom of the tank, that is to say perform a mechanical blockage which withstands even high forces and thus prevents dislocation or tearing the edge of the partition out of the wall and / or the bottom of the tank.
- forces come for example from pressure differences existing for example during filling or emptying, where one of the compartments can be filled with liquid, while the other is still / already empty.
- the edges sealed by molding thus have anchoring means in the form of sealing profiles in the form of a dovetail, pear-shaped, T-shaped, etc.
- the anchoring edges may be present evenly over the entire edge or they may for example only be placed in places under heavy forces and therefore requiring a stronger grip, for example on the upper part of the partition.
- the blocking can also be obtained by attaching accessories to / in the edges of the partition, such as for example rods attached to the partition which during molding are integrated and the wall and / or the bottom of the tank.
- Different anchoring means can obviously be provided in combination on the same edge and / or on the same partition.
- the skilled person is aware that it is necessary to adapt the sealing depth of the edges of the partitions in the wall and / or the bottom of the tank according to the intended use.
- the thickness of the wall and the bottom of the tank and the partitions will depend in particular on the nature of the material used and the rigidity of the compartmentalization desired or necessary.
- the skilled person will also easily determine how deep must seal the edge of the partition to achieve an effective seal without weakening the tank.
- the width of the sealed edge that is to say the depth to which the partition is sealed in the wall and / or the bottom of the tank is of the order of one to several centimeters, in general from 2 to 5 cm.
- a particular embodiment of the present invention provides the molding of thicknesses on the inner face of the wall and / or the bottom of the tank, where the edges of the partitions of fine material are sealed. by molding.
- the skilled person can also add extra thicknesses on the outside of the bottom of the tank and / or the wall if necessary.
- Another means of obtaining an anchoring and mechanical locking effect which at the same time makes it possible to reduce the effect of reducing the effective thickness at the sealing locations can be obtained for example by producing perforations or holes on the lateral edges of the partitions. These perforations or holes are filled during the molding of the tank and thus form an anchoring while increasing the effective thickness of the wall or bottom at the sealing location of the partitions.
- the size, shape and number of these holes is in principle not critical, but is generally determined in part by the material used for the bulkhead and / or for the molding of the vessel.
- the partition (s) to be sealed in the tank is (are) chosen from simple, complex and / or integrated partitions.
- a partition made of thin material in the sense of the present invention is, in its most basic embodiment, a simple partition having two lateral edges and a lower horizontal edge, these edges being in continuity.
- the partition may also form a so-called integrated partition.
- Integrated wall means a partition which integrates at least one compartment.
- This integrated partition further has a bottom and the bottom carrying the lower horizontal edge which is sealed in the bottom of the tank.
- the integrated partition like the simple partition, has edges in continuity.
- the advantage of the integrated partition is that at least three compartments are obtained with the sealing of a single partition.
- the partition is sealed in two places in the wall (in addition to the seal in the bottom), which has the potential advantage of weakening the vessel less.
- the integrated partition may furthermore integrate more than one compartment, these compartments being able to take various forms, for example rectangular, triangular, etc., the essential being that the molding of the compartmentalized vessel is feasible.
- the material used for the integrated partition has a reduced thickness compared for example to concrete.
- the partition may be a so-called complex partition, that is to say having more than two lateral edges, for example a partition whose base is in the form of a cross, a star, etc.
- This complex partition also has a bottom, the bottom bearing the sealing edge that will be crimped into the bottom of the tank.
- the advantage of the complex partition is that at least three compartments are obtained with a single partition.
- this complex partition can be assembled beforehand in the workshop and avoids having to assemble various simple partitions to obtain a complex partitioning at within the tank. It is clear that a tank can accommodate the different types of partitions (simple, complex and integrated).
- the partitions may furthermore have notches, incisions, holes, holes or any other appropriate form, to allow for example the flow of liquid through the various compartments or ventilation.
- the partition may be straight, but the person skilled in the art can of course adapt it according to the use of the tank to give it various shapes, for example a curved, wavy shape, etc. and the partition may also be reinforced by grooves, grooves or any other suitable reinforcing means. It is also possible to increase the rigidity of the compartmentalized vessel by known means, for example by the application of splines and other structures, by the mounting of reinforcing profiles, etc.
- the invention thus allows to have partitions sealed in the tank, that is to say, sealed but also locked in position.
- the molded compartmentalized tank can, once demolded and sufficiently hardened concrete, be delivered directly to the customer, the fixing of partitions or the installation of joints being superfluous.
- the complex partition and / or the integrated partition form a cassette, that is to say a pre-equipped module for carrying out particular functions in a compartment.
- a cassette that is to say a pre-equipped module for carrying out particular functions in a compartment.
- It may for example be a biological reactor cassette forming a compartment for biological degradation, composed for example of a complex or integrated partition as described above, equipped with a support for microorganisms, an aeration system and / or a bubbling system.
- the cassette may also form a settling cassette forming a compartment for settling, composed of one of the partitions described above equipped with an inclined plane for example to facilitate settling.
- This biological reactor cassette is prefabricated in the workshop. It is then sealed in a tank during the molding thereof and the compartmented tank can then be delivered directly to the customer. On-site installation is faster and requires less heavy equipment.
- a further aspect of the present invention relates to a wastewater treatment plant comprising a molded compartmentalized tank as described above.
- compartmentalized tank as defined above can be used for the treatment of wastewater.
- the molding can be carried out in any suitable manner, but is preferably carried out with an inverted tank, ie the tank is molded with the bottom at the top. After molding, the assembly is turned over and then the outer and inner molds are removed.
- the demolding may be carried out, for example, off-line or in full, but preferably it is carried out in full.
- Integral mold release means that the molding is followed immediately by demolding.
- This technique can be used, for example, for concrete: the fresh concrete vat with walls sealed in the resulting vat is dried and ready for delivery.
- the mold used is quickly reusable, which reduces the number of molds required and has an economic advantage.
- Another advantage of the invention is that the partition (s) thus sealed in the wall of the vessel reinforce it during demolding and during the entire drying period, thus avoiding, for example, deformations of the peripheral wall. of the tank.
- the inner molds and the partitions inserted into the outer mold have a substantially conical shape narrowing towards the bottom of the mold.
- milt could be introduced for example between the inner molds and partitions and solidifying, it could prevent or at least interfere with the demolding.
- the narrowing between the top and bottom of the inserted partition, respectively of the inner mold is in the range of 0.5 ° to 4 °, preferably 1 ° to 2 °.
- the tank, after turning and demolding has walls and / or partitions whose cross section is substantially narrower at the top of the partition at the bottom of the partition.
- Suitable release agents can also be used to facilitate demolding. It is also clear that the anchoring means described above also generally increase the holding of the partitions during demolding, even at fresh (integral demolding), thereby reducing the risk of tearing of the partitions during demolding.
- the figure 1 has a bowl portion 10 comprising a peripheral wall 105 and a bottom (not shown).
- the tank 10 is compartmentalized by a partition 100 having a dovetailed anchor edge 101 sealed in the wall 105 during molding.
- a substantially straight partition 200 (A) has a frank lateral edge in continuity of the partition, this edge may be sealed for example in a tank where differential pressures are exerted on the walls, without risk of dislocation.
- partitions with an anchored edge such as dovetail (B) and (C) or cylindrical (D), are preferable to block the partition in the tank and to ensure sealing.
- the figure 3 presents an embodiment of the present invention showing in profile an integrated partition 300 having side and bottom edges 301, said edges being sealed in the wall and the bottom of a vessel (not shown).
- the partition has a substantially narrower cross section at the top of the partition than at the bottom of the partition.
- the figure 4 discloses an embodiment of the present invention showing a cassette integral partition 403 having two side edges and a lower edge 401, these edges being continuous.
- This cassette may have stiffening means, such as grooves 404. It is also possible to fix different accessories, such as for example a biological bed (not shown) in this cassette with rods of appropriate material, these rods would end in the grooves 404 and do not interfere with the molding of the tank.
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Description
La présente invention concerne une méthode de compartimentation pour cuves et des cuves compartimentées utilisées notamment dans le domaine des stations d'épuration.The present invention relates to a compartmentalization method for tanks and compartmentalized tanks used in particular in the field of purification plants.
L'épuration des eaux domestiques peut être réalisée grâce à des stations d'épuration qui comprennent généralement plusieurs cuves ou compartiments. L'eau passe successivement par les compartiments intégrant chacun une fonction différente, par exemple le dégraissage des eaux, la dégradation microbiologique, la décantation, etc.The purification of domestic water can be carried out through purification plants which generally comprise several tanks or compartments. The water passes successively through the compartments each integrating a different function, for example the degreasing of water, microbiological degradation, decantation, etc.
Les stations d'épuration sont généralement fabriquées au départ d'une cuve en béton ou en matière synthétique standard du marché qui est adaptée en y installant d'abord chacune des cloisons en béton ou en matière synthétique séparant les différents compartiments. Les différentes cloisons doivent ensuite être fixées dans la cuve et la pose de joints s'impose afin d'obtenir une étanchéité entre les différents compartiments. Un exemple de cuves de ce type est décrit dans
Cette réalisation de station d'épuration est relativement longue car l'opérateur doit d'abord verrouiller les différentes cloisons dans la cuve, et une fois fixés procéder à la pose de joints. Par ailleurs, l'opérateur s'expose à des risques lorsqu'il entre dans la cuve pour fixer les cloisons, car les cloisons peuvent se renverser sur lui, ce qui est d'autant plus dangereux s'il s'agit de cloisons lourdes (en béton par exemple).This realization of treatment plant is relatively long because the operator must first lock the various partitions in the tank, and once set proceed to the installation of joints. In addition, the operator exposes himself to risks when he enters the tank to fix the partitions, because the partitions can be overturned on him, which is all the more dangerous in the case of heavy partitions. (concrete for example).
Pour éviter ce risque, on pourrait envisager d'insérer les cloisons dans des rainures en forme de U se trouvant dans la paroi de la cuve. Néanmoins, il s'est avéré qu'une telle configuration n'est pas suffisamment étanche en raison des tolérances de fabrication qui sont à considérer, et la pose de joints reste donc toujours nécessaire.To avoid this risk, one could consider inserting the partitions in U-shaped grooves in the wall of the tank. Nevertheless, it has been found that such a configuration is not sufficiently tight because of the manufacturing tolerances that are to be considered, and the installation of seals therefore still remains necessary.
Ces inconvénients pourraient être surmontés en moulant des cuves compartimentées d'une seule pièce, les cuves et les cloisons de compartimentation étant ainsi formées d'un seul matériau. Un exemple de ce type de cuves est décrit dans
L'objet de la présente invention est par conséquent de proposer une cuve compartimentée avec un poids plus réduit, tout en étant étanche. De plus, l'équipement de ces cuves pour les transformer en station d'épuration devrait être facile et rapide, avec le moins de risques d'accidents pour l'opérateur.The object of the present invention is therefore to provide a compartmentalized vessel with a reduced weight, while being waterproof. In addition, the equipment of these tanks to turn them into a treatment plant should be easy and fast, with the least risk of accidents for the operator.
Afin de résoudre le problème mentionné ci-dessus, la présente invention concerne une cuve moulée compartimentée ayant un fond et des parois périphériques. Cette cuve comprend par ailleurs une ou plusieurs cloisons en matériau fin et/ou léger dont les bords sont scellés par moulage dans la paroi et le fond de la cuve, de manière à obtenir une étanchéité parfaite entre les compartiments. Le fond et la paroi périphérique sont en béton et/ou en fibrociment et la/les cloison(s) en matériau fin et/ou léger sont fabriquée(s) en acier inoxydable et/ou en une matière synthétique imputrescible.In order to solve the problem mentioned above, the present invention relates to a compartmentalized molded vessel having a bottom and peripheral walls. This tank also comprises one or more partitions of fine and / or light material whose edges are sealed by molding in the wall and the bottom of the tank, so as to obtain a perfect seal between the compartments. The bottom and the peripheral wall are made of concrete and / or fiber cement and the partition (s) made of fine and / or light material are made of stainless steel and / or of a rotproof synthetic material.
L'invention présente trois avantages majeurs : le premier est de disposer d'une cuve compartimentée, dont les bords des cloisons sont enchâssés dans la cuve lors du moulage, de sorte à obtenir une étanchéité quasi parfaite, aussi bien entre la paroi de la cuve et les cloisons qu'entre le fond de la cuve et les cloisons.The invention has three major advantages: the first is to have a compartmentalized vessel, the edges of the partitions are embedded in the tank during molding, so as to obtain an almost perfect seal, both between the wall of the tank and the partitions and between the bottom of the tank and the partitions.
Le deuxième avantage, tout aussi important, est que l'invention de par le scellage par moulage permet d'utiliser des cloisons plus fines, ce qui réduit considérablement le poids des cuves compartimentées et par conséquent les coûts de transport et d'installation.The second advantage, just as important, is that the invention by molding sealing allows the use of thinner partitions, which considerably reduces the weight of the compartmentalized tanks and therefore the costs of transportation and installation.
Troisièmement, l'insertion de cloisons directement lors du moulage ne rallonge pas significativement la fabrication de la cuve, mais rendent superflu leur montage ultérieur en atelier ou chez le client. En effet, comme la cuve est moulée avec les cloisons insérées, il en résulte une cuve compartimentée plus légère et prête à l'emploi qui peut être livrée directement chez le client par le fabricant de cuve. L'utilisation de moyens de fixation et la descente d'opérateurs dans la cuve pour assurer la fixation sont donc également superflues, améliorant ainsi la sécurité.Third, the insertion of partitions directly during molding does not significantly increase the manufacture of the tank, but make superfluous their subsequent installation in the workshop or at the customer. Indeed, as the tank is molded with the partitions inserted, this results in a lighter and ready-to-use compartmentalized tank that can be delivered directly to the customer by the tank manufacturer. The use of fixing means and the descent of operators in the tank to ensure the attachment are also superfluous, thus improving safety.
Finalement, l'intérêt de l'invention réside dans la simplicité et la rapidité du montage, ce qui est évidemment intéressant d'un point de vue économique.Finally, the interest of the invention lies in the simplicity and speed of assembly, which is obviously interesting from an economic point of view.
Les cuves compartimentées, c'est-à-dire la paroi périphérique et le fond, sont moulées en béton et/ou en fibrociment. Par ailleurs, si nécessaire, des additifs appropriés peuvent être ajoutés comme par exemple des composés rigidifiants, des fibres, des accélérateurs de prise, des hydrofuges, des résines polymères ou des combinaisons de ceux-ci.The compartmentalized tanks, that is to say the peripheral wall and the bottom, are molded of concrete and / or fiber cement. On the other hand, if necessary, suitable additives may be added such as, for example, stiffening compounds, fibers, setting accelerators, water repellents, polymeric resins or combinations thereof.
Comme indiqué, afin de remédier au problème de poids des cuves compartimentées, les cloisons utilisées sont des cloisons légères par comparaison à des parois en béton. Pour cela, elles sont faites en matériau fin et/ou léger, c'est-à-dire elles peuvent être fabriquées en un matériau relativement lourd, mais présentant alors une épaisseur réduite (et formant donc des cloisons légères), comme par exemple des cloisons en acier inoxydable, ou alors le matériau utilisé est fin et léger, comme par exemple, les matières synthétiques imputrescibles, telles que le PVC, le polyéthylène haute densité, le polyéthylène, le polyester, le polypropylène, le nylon, voire tout autre matériau adapté. On peut également utiliser des matériaux moussés qui sont légers, mais qui présentent alors généralement une épaisseur plus importante. Toutes les combinaisons de ces matériaux sont également possibles. L'épaisseur du matériau utilisé dépend évidemment du matériau utilisé et des contraintes prévues, néanmoins elle se situera normalement entre 1 mm et 3 cm, de préférence entre 2 mm et 2 cm.As indicated, in order to overcome the problem of compartmentalized tanks, the partitions used are lightweight partitions compared to concrete walls. For this, they are made of thin and / or light material, that is to say they can be made of a relatively heavy material, but then having a reduced thickness (and thus forming light partitions), such as for example stainless steel partitions, or the material used is fine and light, such as rot-proof synthetic materials such as PVC, high-density polyethylene, polyethylene, polyester, polypropylene, nylon or any other material adapted. It is also possible to use foamed materials which are light but which then present generally a larger thickness. All combinations of these materials are also possible. The thickness of the material used obviously depends on the material used and the stresses provided, however, it will normally be between 1 mm and 3 cm, preferably between 2 mm and 2 cm.
Le poids plus réduit d'une telle cuve facilite donc son transport et son installation chez le client. En effet, en pratique on peut atteindre un gain de poids important, par exemple de l'ordre de plusieurs centaines de kilogrammes pour une cuve d'épuration standard, ce gain de poids dépendant évidemment de la taille de la cuve compartimentée et du nombre de compartiments prévus.The reduced weight of such a tank thus facilitates its transport and installation at the customer. Indeed, in practice one can achieve a significant weight gain, for example of the order of several hundred kilograms for a standard purification tank, this weight gain obviously dependent on the size of the compartmentalized vessel and the number of compartments provided.
En prévoyant des moyens de rigidification appropriés, comme par exemple des cannelures, des rainures etc., il est par ailleurs possible de réduire davantage le poids de la cuve car ces moyens permettent d'utiliser des cloisons encore plus fines ou en matériau encore plus léger.By providing suitable stiffening means, such as grooves, grooves, etc., it is also possible to further reduce the weight of the tank because these means allow to use even thinner walls or even lighter material .
Cette réduction de poids permet au final un maniement plus facile des cuves compartimentées et on peut ainsi par exemple s'affranchir de gros engins de chantier pour installer la cuve chez le client.This reduction in weight ultimately allows easier handling compartmentalized tanks and can for example get rid of large construction equipment to install the tank at the customer.
Les cloisons en matériau fin selon l'invention peuvent prendre tout forme appropriée à l'usage comme par exemple droit, incurvé, ondulé etc. Les bords des cloisons peuvent être en continuité avec le reste de la cloison, c'est à dire avoir une forme (ou section) sensiblement identique au reste de la cloison. Ainsi, on peut utiliser par exemple une cloison sensiblement droite dont les bords sont également sensiblement droits (bords francs). Néanmoins, les bords peuvent prendre toute autre forme appropriée à l'usage. Lorsque les pressions existantes de part et d'autre des compartiments sont similaires, c'est-à-dire la pression différentielle est faible, des cloisons en matériau fin avec des bords droits par exemple sont assez rigides pour garantir une étanchéité parfaite.Partitions of fine material according to the invention can take any form suitable for use such as straight, curved, corrugated, etc. The edges of the partitions may be continuous with the remainder of the partition, that is to say have a shape (or section) substantially identical to the rest of the partition. Thus, it is possible to use, for example, a substantially straight partition whose edges are also substantially straight (sharp edges). Nevertheless, the edges may take any other form suitable for use. When the existing pressures on either side of the compartments are similar, that is to say the differential pressure is low, partitions of fine material with straight edges for example are rigid enough to ensure a perfect seal.
On entend par étanchéité parfaite ou quasi parfaite, une étanchéité entre les cloisons et la paroi de la cuve qui est suffisante pour que le liquide contenu d'un compartiment ne s'écoule pas de manière significative entre les cloisons et le fond ou la paroi de la cuve, et ceci tant en présence de pressions différentielles faibles (p.ex. même niveau de liquide dans les compartiments), tout comme en présence de pressions différentielles élevées (qui peuvent déjà se produire par exemple leur de la vidange ou du remplissage d'un compartiment). Il est clair que cette configuration n'exclue pas le passage de liquides à travers des trous, entailles, orifices etc. spécialement conçus à cet effet et pour l'utilisation visée, comme par exemple en cas de station d'épuration.
Au cas où des pressions différentielles importantes s'exerceraient sur les cloisons, une cloison, comme par exemple une cloison droite à bord droit scellé dans la cuve pourrait se bomber, se déboîter et ainsi ne plus assurer l'étanchéité entre les compartiments. En effet, les cuves compartimentées selon l'invention présentent en général une incompatibilité chimique entre le matériau utilisé pour le moulage de la cuve et celui de la cloison, de sorte à ce qu'il n'y a généralement pas de liaison chimique suffisante entre les deux matériaux, contrairement aux cuves compartimentées moulées en une seule pièce avec un matériau identique.Perfect or near perfect sealing means a seal between the partitions and the wall of the tank which is sufficient so that the liquid contained in a compartment does not flow significantly between the partitions and the bottom or the wall of the tank. the tank, and this both in the presence of low differential pressures (eg same level of liquid in the compartments), as in the presence of high differential pressures (which may already occur by example of the emptying or filling of a compartment). It is clear that this configuration does not exclude the passage of liquids through holes, notches, orifices, etc. specially designed for this purpose and for the intended use, such as in the case of a wastewater treatment plant.
In the event that significant differential pressures are exerted on the partitions, a partition, such as a right-sided straight partition sealed in the tank could bend, dislodge and thus no longer ensure tightness between the compartments. Indeed, the compartmentalized tanks according to the invention generally have a chemical incompatibility between the material used for the molding of the tank and that of the partition, so that there is generally no sufficient chemical bond between the two materials, unlike compartmentalized tanks molded in one piece with identical material.
Par conséquent, pour éviter une éventuelle dislocation de cloison(s) en cas de pressions élevées, un mode avantageux de la présente invention propose d'utiliser des cloisons dont les bords scellés dans la cuve présentent un ou plusieurs moyens d'ancrage ou de blocage mécanique. Ces moyens d'ancrage peuvent être disposés de manière régulière ou non, c'est à dire ils peuvent se trouver sur tout le pourtour utile de la cloison scellée dans la cuve, ou bien sur une partie seulement.Therefore, to avoid possible dislocation of partition (s) under high pressure, an advantageous embodiment of the present invention proposes to use partitions whose edges sealed in the tank have one or more means of anchoring or blocking mechanical. These anchoring means may be arranged regularly or not, that is to say they can be all around the useful periphery of the sealed partition in the tank, or only a part.
On entend par moyen d'ancrage tout moyen ou outil permettant de bloquer la cloison dans la paroi et le fond de la cuve, c'est-à-dire effectuer un blocage mécanique qui résiste à des forces même élevées et empêche ainsi une dislocation ou arrachement du bord de la cloison hors de la paroi et/ou du fond de la cuve. Ces forces proviennent par exemple de différences de pressions existant par exemple lors du remplissage ou de la vidange, où un des compartiments peut être rempli de liquide, alors que l'autre est encore/déjà vide.By means of anchoring means any means or tool for blocking the partition in the wall and the bottom of the tank, that is to say perform a mechanical blockage which withstands even high forces and thus prevents dislocation or tearing the edge of the partition out of the wall and / or the bottom of the tank. These forces come for example from pressure differences existing for example during filling or emptying, where one of the compartments can be filled with liquid, while the other is still / already empty.
Avantageusement les bords scellés par moulage présentent donc des moyens d'ancrage sous forme de profils de scellement en forme de queue d'aronde, en forme de poire, en forme de T, etc. Les bords à ancrage peuvent être présents de façon régulière sur l'entièreté du bord ou bien ils peuvent par exemple seulement être placés aux endroits subissant d'importantes forces et nécessitant donc une plus forte accroche, par exemple sur la partie supérieure de la cloison.Advantageously, the edges sealed by molding thus have anchoring means in the form of sealing profiles in the form of a dovetail, pear-shaped, T-shaped, etc. The anchoring edges may be present evenly over the entire edge or they may for example only be placed in places under heavy forces and therefore requiring a stronger grip, for example on the upper part of the partition.
Le blocage peut également être obtenu par la fixation d'accessoires sur/dans les bords de la cloison, comme par exemple des tiges fixées à la cloison qui lors du moulage sont intégrés et la paroi et/ou le fond de la cuve.The blocking can also be obtained by attaching accessories to / in the edges of the partition, such as for example rods attached to the partition which during molding are integrated and the wall and / or the bottom of the tank.
Différents moyens d'ancrage peuvent évidemment être prévus en combinaison sur un même bord et/ou sur une même cloison.Different anchoring means can obviously be provided in combination on the same edge and / or on the same partition.
L'homme du métier est conscient qu'il faut adapter la profondeur de scellement des bords des cloisons dans la paroi et/ou le fond de la cuve en fonction de l'utilisation visée. L'épaisseur de la paroi et du fond de la cuve et des cloisons dépendra notamment de la nature du matériau utilisé et de la rigidité de la compartimentation souhaitée ou nécessaire. L'homme du métier déterminera facilement par ailleurs à quelle profondeur il faut sceller le bord de la cloison pour arriver à un scellement efficace sans pour autant fragiliser la cuve. Ainsi en pratique, la largeur du bord scellé, c'est-à-dire la profondeur à laquelle la cloison est scellée dans la paroi et/ou le fond de la cuve est de l'ordre d'un à plusieurs centimètres, en général de 2 à 5 cm.The skilled person is aware that it is necessary to adapt the sealing depth of the edges of the partitions in the wall and / or the bottom of the tank according to the intended use. The thickness of the wall and the bottom of the tank and the partitions will depend in particular on the nature of the material used and the rigidity of the compartmentalization desired or necessary. The skilled person will also easily determine how deep must seal the edge of the partition to achieve an effective seal without weakening the tank. Thus in practice, the width of the sealed edge, that is to say the depth to which the partition is sealed in the wall and / or the bottom of the tank is of the order of one to several centimeters, in general from 2 to 5 cm.
Il est clair qu'en principe, le scellage des bords des cloisons dans la paroi et/ou le fond de la cuve selon l'invention réduit a priori l'épaisseur efficace de la paroi et/ou du fond à l'endroit du scellage.It is clear that, in principle, the sealing of the edges of the partitions in the wall and / or the bottom of the tank according to the invention reduces a priori the effective thickness of the wall and / or the bottom at the location of the seal .
Au cas où cet aspect serait critique, un mode particulier de réalisation de la présente invention prévoit le moulage de surépaisseurs sur la face intérieure de la paroi et/ou du fond de la cuve, aux endroits où les bords des cloisons en matériau fin sont scellés par moulage. Par ailleurs, l'homme du métier peut également ajouter des surépaisseurs du côté extérieur du fond de la cuve et/ou de la paroi si nécessaire.In the case where this aspect would be critical, a particular embodiment of the present invention provides the molding of thicknesses on the inner face of the wall and / or the bottom of the tank, where the edges of the partitions of fine material are sealed. by molding. Moreover, the skilled person can also add extra thicknesses on the outside of the bottom of the tank and / or the wall if necessary.
Un autre moyen d'obtenir un effet d'ancrage et de blocage mécanique qui permet en même temps de diminuer l'effet de réduction de l'épaisseur efficace aux endroits de scellage peut être obtenu par exemple par la réalisation de perforations ou de trous sur les bords latéraux des cloisons. Ces perforations ou trous se remplissent lors du moulage de la cuve et forment ainsi un ancrage tout en augmentant l'épaisseur efficace de la paroi ou du fond à l'endroit de scellement des cloisons. La taille, la forme et le nombre de ces trous n'est en principe pas critique, mais est en général déterminé en partie par le matériau utilisé pour la cloison et/ou pour le moulage de la cuve.Another means of obtaining an anchoring and mechanical locking effect which at the same time makes it possible to reduce the effect of reducing the effective thickness at the sealing locations can be obtained for example by producing perforations or holes on the lateral edges of the partitions. These perforations or holes are filled during the molding of the tank and thus form an anchoring while increasing the effective thickness of the wall or bottom at the sealing location of the partitions. The size, shape and number of these holes is in principle not critical, but is generally determined in part by the material used for the bulkhead and / or for the molding of the vessel.
Il est clair que ces différents éléments et mesures d'ancrage, de rigidification et d'augmentation de l'épaisseur efficace de la paroi et/ou du fond peuvent être combinés si cela est jugé utile.It is clear that these various elements and measures anchoring, stiffening and increasing the effective thickness of the wall and / or the bottom can be combined if deemed useful.
Dans un mode de réalisation particulier, la/les cloison(s) à sceller dans la cuve est (sont) choisie(s) parmi les cloisons simples, complexes et/ou intégrées.In a particular embodiment, the partition (s) to be sealed in the tank is (are) chosen from simple, complex and / or integrated partitions.
Une cloison en matériau fin dans le sens de la présente invention est, dans son mode de réalisation le plus élémentaire, une cloison simple présentant deux bords latéraux et un bord horizontal inférieur, ces bords étant en continuité.A partition made of thin material in the sense of the present invention is, in its most basic embodiment, a simple partition having two lateral edges and a lower horizontal edge, these edges being in continuity.
Dans une autre variante avantageuse de l'invention, la cloison peut également former une cloison dite intégrée. On entend par cloison intégrée une cloison qui intègre au moins un compartiment. Cette cloison intégrée présente de plus un fond et ce fond portant le bord horizontal inférieur qui est scellé dans le fond de la cuve. Ainsi la cloison intégrée, tout comme la cloison simple, présente des bords en continuité. L'avantage de la cloison intégrée réside dans le fait qu'on obtient au moins trois compartimentations avec le scellement d'une seule cloison. De plus, la cloison n'est scellée qu'en deux endroits dans la paroi (en plus du scellement dans le fond), ce qui a l'avantage éventuel de fragiliser moins la cuve. La cloison intégrée peut en outre intégrer plus d'un compartiment, ces compartiments pouvant prendre diverses formes par exemple rectangulaire, triangulaire etc., l'essentiel étant que le moulage de la cuve compartimentée soit réalisable. Comme pour la cloison simple, le matériau utilisé pour la cloison intégré présente une épaisseur réduite par comparaison par exemple au béton.In another advantageous variant of the invention, the partition may also form a so-called integrated partition. Integrated wall means a partition which integrates at least one compartment. This integrated partition further has a bottom and the bottom carrying the lower horizontal edge which is sealed in the bottom of the tank. Thus the integrated partition, like the simple partition, has edges in continuity. The advantage of the integrated partition is that at least three compartments are obtained with the sealing of a single partition. In addition, the partition is sealed in two places in the wall (in addition to the seal in the bottom), which has the potential advantage of weakening the vessel less. The integrated partition may furthermore integrate more than one compartment, these compartments being able to take various forms, for example rectangular, triangular, etc., the essential being that the molding of the compartmentalized vessel is feasible. As for the single wall, the material used for the integrated partition has a reduced thickness compared for example to concrete.
Dans une autre variante avantageuse de l'invention, la cloison peut être une cloison dite complexe, c'est à dire présentant plus de deux bords latéraux, par exemple une cloison dont la base est en forme de croix, d'étoile etc. Cette cloison complexe présente par ailleurs un fond, ce fond portant le bord de scellement qui va être sertie dans le fond de la cuve. L'avantage de la cloison complexe est que l'on obtient au moins trois compartiments avec une seule cloison. De plus, cette cloison complexe peut être assemblée au préalable en atelier et évite de devoir assembler diverses cloisons simples afin d'obtenir un cloisonnement complexe au sein de la cuve. Il est clair qu'une cuve peut accueillir les différents types de cloisons (simple, complexe et intégré).In another advantageous variant of the invention, the partition may be a so-called complex partition, that is to say having more than two lateral edges, for example a partition whose base is in the form of a cross, a star, etc. This complex partition also has a bottom, the bottom bearing the sealing edge that will be crimped into the bottom of the tank. The advantage of the complex partition is that at least three compartments are obtained with a single partition. In addition, this complex partition can be assembled beforehand in the workshop and avoids having to assemble various simple partitions to obtain a complex partitioning at within the tank. It is clear that a tank can accommodate the different types of partitions (simple, complex and integrated).
Les cloisons peuvent par ailleurs présenter des entailles, incisons, orifices, trous ou toute autre forme appropriée, afin de permettre par exemple l'écoulement de liquide à travers les différents compartiments ou l'aération.The partitions may furthermore have notches, incisions, holes, holes or any other appropriate form, to allow for example the flow of liquid through the various compartments or ventilation.
La cloison peut être droite, mais l'homme du métier peut évidemment l'adapter selon l'utilisation de la cuve pour lui donner diverses formes par exemple une forme incurvée, ondulée, etc. et la cloison peut également être renforcée par des rainures, cannelures ou tout autre moyen de renforcement adapté. Il est également possible d'augmenter la rigidité de la cuve compartimentée par des moyens connus, par exemple par l'application de cannelures et d'autres structures, par le montage de profilés de renforcement, etc.The partition may be straight, but the person skilled in the art can of course adapt it according to the use of the tank to give it various shapes, for example a curved, wavy shape, etc. and the partition may also be reinforced by grooves, grooves or any other suitable reinforcing means. It is also possible to increase the rigidity of the compartmentalized vessel by known means, for example by the application of splines and other structures, by the mounting of reinforcing profiles, etc.
L'invention permet ainsi de disposer de cloisons scellées dans la cuve, c'est-à-dire étanches mais également verrouillées en position. De cette façon, la cuve compartimentée moulée peut, une fois démoulé et le béton suffisamment durci, être livré directement chez le client, la fixation de cloisons ou la pose de joints étant superflues.The invention thus allows to have partitions sealed in the tank, that is to say, sealed but also locked in position. In this way, the molded compartmentalized tank can, once demolded and sufficiently hardened concrete, be delivered directly to the customer, the fixing of partitions or the installation of joints being superfluous.
Dans un mode de réalisation avantageux de l'invention, la cloison complexe et/ou la cloison intégrée forment une cassette, c'est-à-dire un module pré-équipé pour la réalisation de fonctions particulières dans un compartiment. Il peut par exemple s'agir d'une cassette réacteur biologique formant un compartiment pour la dégradation biologique, composé par exemple d'une cloison complexe ou intégrée telle que décrite ci-dessus, équipée d'un support pour micro-organismes, d'un système d'aération et/ou d'un système de bullage. La cassette peut également former une cassette de décantation formant un compartiment pour la décantation, composé d'une des cloisons décrites ci-dessus équipées d'un plan incliné par exemple pour faciliter la décantation.In an advantageous embodiment of the invention, the complex partition and / or the integrated partition form a cassette, that is to say a pre-equipped module for carrying out particular functions in a compartment. It may for example be a biological reactor cassette forming a compartment for biological degradation, composed for example of a complex or integrated partition as described above, equipped with a support for microorganisms, an aeration system and / or a bubbling system. The cassette may also form a settling cassette forming a compartment for settling, composed of one of the partitions described above equipped with an inclined plane for example to facilitate settling.
Différentes variantes de cassettes réacteur biologique sont possibles, l'essentiel étant qu'il soit possible de sceller leurs bords dans la paroi et/ou le fond de la cuve lors du moulage de cette dernière, sans pour autant abîmer la ou les fonctions prévues, par exemple le lit biologique. En pratique, les cassettes doivent donc présenter un fond si le moulage est effectué à cuve renversé (voir plus loin). Le support du lit peut prendre différentes formes, par exemple tubulaire, sphérique, conique etc. Il est à noter cependant que la forme de la cassette réacteur biologique n'est critique que dans le sens où elle doit être appropriée pour l'utilisation prévue, et qu'elle doit permettre, par sa forme et ses dimensions, la compartimentation d'une cuve de taille et de forme déterminées. Les compartiments d'une cuve peuvent ainsi être formés de cloisons et ou de cassettes.Different variants of biological reactor cassettes are possible, the essential being that it is possible to seal their edges in the wall and / or the bottom of the tank during molding of the latter, without damaging the function or functions provided, for example the biological bed. In practice, the cassettes must therefore have a bottom if the molding is carried out with inverted tank (see below). The support of the bed can take different forms, for example tubular, spherical, conical, etc. It should be noted, however, that the shape of the biological reactor cassette is critical only in the sense that it must be suitable for the intended use, and that it must allow, by its shape and its dimensions, the compartmentalisation of a tank of determined size and shape. The compartments of a tank can thus be formed of partitions and or cassettes.
De cette manière, le montage d'une station d'épuration pour eaux usées est facile et rapide. Cette cassette réacteur biologique, est préfabriquée en atelier. Elle est ensuite scellée dans une cuve lors du moulage de celle-ci et la cuve compartimentée peut ensuite être livrée directement chez le client. L'installation sur place est donc plus rapide et nécessite moins d'outillage lourd.In this way, the assembly of a sewage treatment plant is easy and fast. This biological reactor cassette is prefabricated in the workshop. It is then sealed in a tank during the molding thereof and the compartmented tank can then be delivered directly to the customer. On-site installation is faster and requires less heavy equipment.
Un aspect supplémentaire de la présente invention concerne une station d'épuration des eaux usées comprenant une cuve compartimentée moulée telle que décrite ci-dessus.A further aspect of the present invention relates to a wastewater treatment plant comprising a molded compartmentalized tank as described above.
Avantageusement, la cuve compartimentée telle que définie ci-dessus peut être utilisée pour le traitement des eaux usées.Advantageously, the compartmentalized tank as defined above can be used for the treatment of wastewater.
Ainsi, on dispose d'une station d'épuration à assemblage simple, rapide et peu onéreux. En utilisant une cassette réacteur biologique pré-assemblée, la transformation en station d'épuration est d'autant plus simple et rapide. Elle peut par ailleurs résister à des pressions différentielles élevées en raisons des bords sertis dans la cuve. Finalement, de par son poids réduit, le maniement de cette cuve est grandement facilitée.Thus, it has a purification plant simple assembly, fast and inexpensive. By using a pre-assembled biological reactor cassette, the transformation into a purification plant is all the more simple and fast. It can also withstand high differential pressures because of the edges crimped into the tank. Finally, because of its reduced weight, the handling of this tank is greatly facilitated.
Finalement la présente invention concerne une méthode de compartimentation pour mouler des cuves compartimentées. Cette méthode comprend les étapes:
- a) de prévoir un moule extérieur déterminant la forme et les dimensions extérieures de la paroi et du fond de la cuve,
- b) de prévoir un moule intérieur, divisé à des endroits prévus pour accueillir une ou plusieurs cloisons en matériau fin,
- c) de placer une ou plusieurs cloisons en matériau fin aux endroits définis ci-dessus du moule intérieur divisé, les bords des cloisons faisant saillie par rapport aux limites extérieures du moule intérieur,
- d) de placer le moule intérieur et les cloisons à l'intérieur du moule extérieur, les bords faisant saillie (par exemple le profil de scellement) se trouvant dans l'espace qui formera la paroi et/ou le fond de la cuve moulée,
- e) de mouler la cuve par remplissage de cet espace avec scellement des bords des cloisons dans la paroi et/ou le fond de la cuve.
- a) providing an outer mold determining the shape and external dimensions of the wall and bottom of the tank,
- b) to provide an inner mold, divided in places intended to accommodate one or more partitions of fine material,
- c) placing one or more partitions of fine material at the above defined locations of the divided interior mold, the edges of the partitions projecting from the outer boundaries of the inner mold,
- d) placing the inner mold and the partitions inside the outer mold, the protruding edges (for example the sealing profile) being in the space which will form the wall and / or the bottom of the molded vessel,
- e) mold the tank by filling this space with sealing edges of the partitions in the wall and / or the bottom of the tank.
Le moulage peut être réalisé de n'importe quelle manière appropriée, mais est préférentiellement effectué à cuve renversé, c'est-à-dire que la cuve est moulé avec le fond se trouvant en haut. Après le moulage, l'ensemble est retourné et ensuite les moules extérieurs et intérieurs sont retirés.The molding can be carried out in any suitable manner, but is preferably carried out with an inverted tank, ie the tank is molded with the bottom at the top. After molding, the assembly is turned over and then the outer and inner molds are removed.
Le démoulage peut être effectué par exemple en différé ou en intégral, mais préférentiellement il est effectué en intégral. On entend par démoulage en intégral que le moulage est suivi tout de suite par le démoulage. Cette technique peut être utilisée par exemple pour le béton : la cuve en béton frais avec cloisons scellées dans la cuve qui en résulte est séchée, puis elle est prête pour être livrée. Ainsi, le moule utilisé est rapidement réutilisable, ce qui réduit donc le nombre de moules nécessaires et présente un avantage économique. Un autre avantage de l'invention est que la ou les cloisons ainsi scellé(es) dans la paroi de la cuve renforcent celle-ci au moment du démoulage et durant toute la période de séchage, évitant ainsi par exemple des déformations de la paroi périphérique de la cuve.The demolding may be carried out, for example, off-line or in full, but preferably it is carried out in full. Integral mold release means that the molding is followed immediately by demolding. This technique can be used, for example, for concrete: the fresh concrete vat with walls sealed in the resulting vat is dried and ready for delivery. Thus, the mold used is quickly reusable, which reduces the number of molds required and has an economic advantage. Another advantage of the invention is that the partition (s) thus sealed in the wall of the vessel reinforce it during demolding and during the entire drying period, thus avoiding, for example, deformations of the peripheral wall. of the tank.
Avantageusement, les moules intérieurs et les cloisons insérées dans le moule extérieur présentent une forme sensiblement conique se rétrécissant vers le fond du moule. En effet, dans le cas de moulage de cuves en béton, de la laitance pourrait s'introduire par exemple entre les moules intérieurs et les cloisons et, en se solidifiant, elle pourrait empêcher ou du moins gêner le démoulage. En utilisant des moules intérieurs et/ou des cloisons en forme sensiblement conique comme indiqué, on peut remédier à cet éventuel inconvénient. Le rétrécissement entre le haut et le bas de la cloison insérée, respectivement du moule intérieur, est situé dans la plage de 0,5° à 4°, de préférence de 1° à 2°. L'homme de métier saura que dans ce cas de figure, la cuve, après retournement et démoulage, présente des parois et/ou cloisons dont la section transversale est sensiblement plus étroite en haut de la cloison qu'en bas de cloison.Advantageously, the inner molds and the partitions inserted into the outer mold have a substantially conical shape narrowing towards the bottom of the mold. Indeed, in the case of molding concrete tanks, milt could be introduced for example between the inner molds and partitions and solidifying, it could prevent or at least interfere with the demolding. By using interior molds and / or bulkheads of substantially conical shape as indicated, this possible disadvantage can be overcome. The narrowing between the top and bottom of the inserted partition, respectively of the inner mold, is in the range of 0.5 ° to 4 °, preferably 1 ° to 2 °. The skilled person will know that in this case, the tank, after turning and demolding, has walls and / or partitions whose cross section is substantially narrower at the top of the partition at the bottom of the partition.
Des agents de démoulage appropriés peuvent également être utilisés pour faciliter le démoulage. Il est par ailleurs clair que les moyens d'ancrage décrits précédemment augmentent aussi en général la tenue des cloisons lors du démoulage, même à frais (démoulage intégral), réduisant de ce fait le rique d'arrachement des cloisons lors du démoulage.Suitable release agents can also be used to facilitate demolding. It is also clear that the anchoring means described above also generally increase the holding of the partitions during demolding, even at fresh (integral demolding), thereby reducing the risk of tearing of the partitions during demolding.
D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée de quelques modes de réalisation avantageux présentés ci-dessous, à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent:
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Fig. 1 : Vue d'une partie de cuve selon l'invention, montrant une cloison en matériau fin dans une cuve moulée -
Fig. 2 : Section de différentes formes de réalisation de profils de bord de cloison, (A) franc, (B), (C) et (D) à ancrage. -
Fig. 3 : Vue de profil d'une cloison intégrée selon un mode particulier de l'invention. -
Fig. 4 : Vue d'une cloison intégrée selon un mode particulier de l'invention.
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Fig. 1 : View of a tank portion according to the invention, showing a partition of fine material in a molded tank -
Fig. 2 : Section of various forms of partition edge profiles, (A) frank, (B), (C) and (D) anchored. -
Fig. 3 : Side view of an integrated partition according to a particular embodiment of the invention. -
Fig. 4 : View of an integrated partition according to a particular embodiment of the invention.
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Claims (14)
- Moulded compartmentalised tank with a bottom and a peripheral wall and comprising one or a plurality of partitions made of fine and/or light material whose edges are sealed by moulding in the wall and the bottom of said tank to obtain a perfect seal between the compartments, in which the bottom and the peripheral wall are made of concrete and/or fibrocement and in which the partition(s) made of fine and/or light material are manufactured from stainless steel and/or a synthetic, rot proof material.
- Compartmentalised tank according to claim 1, characterised in that the edges sealed by moulding in the wall and/or in the bottom have one or a plurality of anchoring means.
- Compartmentalised tank according to claim 2, characterised in that the anchoring means has/have a dovetail shaped section, pear shaped section, T-shaped section or combinations of these.
- Compartmentalised tank according to claim 2 or 3, characterised In that the anchoring means is/are formed by perforations.
- Compartmentalised tank according to any ane of the previous claims, characterised in that the wall and/or the bottom of the tank moreover have extra thicknesses on their inner surface at the places where the edges of said partitions made of fine material are sealed by moulding.
- Compartmentalised tank according to any one of the previous claims, characterised in that the wall and/or the partition(s) have a vertical conical section that is wider at the side of the bottom of the tank.
- Compartmentalised tank according to any one of the previous claims, characterised in that the bottom and the peripheral wall made of concrete and/or of fibrocement comprise other materials, such as fibres, setting accelerators, waterproofing agents, polymeric resins; or combinations thereof.
- Compartmentalised tank according to any one of the previous claims, characterised in that the rot proof synthetic material is selected from PVC, high density polyethylene, polyethylene, polyester, polypropylene; or combinations thereof.
- Compartmentalised tank according to any one of the previous claims, characterised in that the partition(s) made of fine and/or light material is (are) selected from simple partitions, complex partitions having more than two lateral edges and/or integrated partitions integrating at least one compartment.
- Compartmentalised tank according to claim 9, characterised in that the complex and/or integrated partition(s) form(s) a cassette that is a pre-equipped module for carrying out specific functions in a compartment, preferably a bioreactor cassette forming a compartment for biological degradation equipped with a support for microorganisms, a ventilation system and/or a bubbling system, or another cassette for decantation forming a decantation compartment, consisting of one of the above partitions equipped with an inclined plane.
- Method for compartmentalising moulded tanks having a bottom and a peripheral wall, said method comprising the steps:a) providing an external mould that determines the shape and the external dimensions of the wall and the bottom of the tank,b) providing an inner mould, divided at the locations foreseen for receiving one or a plurality of partitions made of fine and/or light material,c) placing one or a plurality of partitions made of fine and/or light material at said locations of the divided inner mould, wherein the edges of said partitions are protruding.d) placing said inner mould and said partitions inside the external mould, wherein the protruding edges are positioned in the space that will form the wall and the bottom of the moulded tank,e) moulding the tank by filling this space and sealing the edges of the partitions in the wall and the bottom of the tank,in which the bottom and the peripheral wall are in concrete and/or fibrocement and wherein the partition(s) made of fine and/or light material are manufactured from stainless steel and/or a rot proof synthetic material.
- Method for compartmentalising tanks according to claim 11, characterised In that the wall and/or the partltion(s) have a vertical conical section that is wider at the side of the bottom of the tank.
- Waste water purification system comprising a compartmentalised tank according to any one of claims 1 to 10.
- Use of a compartmentalised tank according to claims 1 to 10 for treating waste water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20080168492 EP2184148B1 (en) | 2008-11-06 | 2008-11-06 | Compartmentalised tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20080168492 EP2184148B1 (en) | 2008-11-06 | 2008-11-06 | Compartmentalised tank |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2184148A1 EP2184148A1 (en) | 2010-05-12 |
EP2184148B1 true EP2184148B1 (en) | 2012-10-17 |
Family
ID=40342414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080168492 Expired - Fee Related EP2184148B1 (en) | 2008-11-06 | 2008-11-06 | Compartmentalised tank |
Country Status (1)
Country | Link |
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EP (1) | EP2184148B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014102055U1 (en) * | 2014-05-02 | 2014-06-11 | Atb Umwelttechnologien Gmbh | Partition wall for limiting a clarification chamber of a small wastewater treatment plant |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1599210A (en) * | 1968-12-11 | 1970-07-15 | ||
AUPN374395A0 (en) * | 1995-06-23 | 1995-07-13 | Wride, Grant Andrew | Sewage tank improvement |
DE29805419U1 (en) * | 1998-03-25 | 1998-05-28 | Lauterbach-Kießling GmbH, 95517 Seybothenreuth | Multi-chamber tank for small sewage treatment plants |
US6651949B1 (en) * | 1999-03-24 | 2003-11-25 | Poly-Tec Products, Inc. | Apparatus for casting a gasket and associated positioning member into an opening and a cast member for receiving a conduit |
GB2389086B (en) * | 2002-05-14 | 2005-12-14 | Aquafactors Direct Ltd | Modular cleaning system |
EP1719738A1 (en) * | 2005-05-04 | 2006-11-08 | Epur S.A. | Cartridge comprising a fixed bed for use in sewage treatment plants |
-
2008
- 2008-11-06 EP EP20080168492 patent/EP2184148B1/en not_active Expired - Fee Related
Also Published As
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EP2184148A1 (en) | 2010-05-12 |
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