FR2578832A1 - Process for forced oxygenation of stretches of water or of reservoirs - Google Patents

Process for forced oxygenation of stretches of water or of reservoirs Download PDF

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Publication number
FR2578832A1
FR2578832A1 FR8504086A FR8504086A FR2578832A1 FR 2578832 A1 FR2578832 A1 FR 2578832A1 FR 8504086 A FR8504086 A FR 8504086A FR 8504086 A FR8504086 A FR 8504086A FR 2578832 A1 FR2578832 A1 FR 2578832A1
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water
wall
air
gas
oxygenating
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23112—Mounting the bubbling devices or the diffusers comprising the use of flow guiding elements adjacent or above the gas stream
    • B01F23/231121—Mounting the bubbling devices or the diffusers comprising the use of flow guiding elements adjacent or above the gas stream the flow guiding elements being baffles, tubes or walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231142—Mounting the gas transporting elements, i.e. connections between conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231264—Diffusers characterised by the shape of the diffuser element being in the form of plates, flat beams, flat membranes or films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2373—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media for obtaining fine bubbles, i.e. bubbles with a size below 100 µm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • B01F33/5023—Vehicle-mounted mixing devices the vehicle being a trailer which is hand moved or coupled to self-propelling vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/503—Floating mixing devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

Process intended to produce the forced oxygenation of a stretch of water or of a reservoir by injection of a stream of air or of an oxygenating gas with a maximum efficiency by means of a stationary or mobile device depending on the site to be treated. In one embodiment, it operates with the aid of a device towed by a boat 9 equipped with an air blower device 1 injecting air through a pipe under a microperforated wall 5. A frame 6 which is ballasted and maintained at a certain distance from the bottom by wheels 7 holds the wall 5. The air flow 3 performs a vigorous stirring of the water layer situated near the bottom and ploughs up the bottom layer 4 under an oxygenating environment. A sheet of microbubbles 10 is emitted through the perforations into the body of water 2. The overflow of air is discharged at the rear 8. The process according to the invention is particularly intended for the oxygenating treatment of stretches of water or reservoirs.

Description

La présente invention concerne un procédé d'oxygéna tion forcée de bassins ou plans dteauwpar ifljectiôh d'un flux d'air ou de gaz oxygénant. The present invention relates to a method of forced oxygenation of basins or planes dteauwpar ifljectiôh of a flow of air or oxygenating gas.

Les procédés traditionnels d'oxygénation de plans d'eau sont des procédés de renouvellement des masses d'eau par de nouvelles masses d'eau plus riches en oxygène, ou simplement d'apports de nouvelles masses d'eau plus riches en oxygène. Ces déplacements de masses d'eau mettent en jeu des techniques d'hydraulique lourde, de génie civil et de travaux publics.Ces techniques ne per mettent pas un contrôle précis de la teneur en oxygène du plan d'eau, et s'avèrent innefficaces dans certaines conditions météorologiques. Traditional methods of oxygenating bodies of water are methods of renewing water bodies with new water bodies richer in oxygen, or simply by adding new water bodies richer in oxygen. These displacements of water masses involve heavy hydraulic, civil engineering and public works techniques. These techniques do not allow precise control of the oxygen content of the water body, and prove to be ineffective. under certain weather conditions.

Des procédés nouveaux d'injection directe d'air ou de gaz oxygénant ont été mis en service dans des bassins de pisciculture, procédant par injection de flux libres d'air ou de gaz dans le milieu à traiter. Ces procédés sont de plus en plus utilisés, mais du fait des fortes déperditions de gaz, entraînant des rendementsrelativement faibles, ils ne sont envisageables que dans des milieux restreints. New methods of direct injection of air or oxygenating gas have been put into service in fish farming basins, proceeding by injecting free flows of air or gas into the medium to be treated. These methods are used more and more, but because of the high gas losses, resulting in relatively low yields, they can only be envisaged in restricted environments.

Le procédé selon l'invention est applicable aussi bien dans des milieux restreints que dans des milieux naturels vastes. The method according to the invention is applicable both in restricted environments and in large natural environments.

Le procédé selon l'invention consiste à traiter "in situ" en totalité ou par portions, la masse d'eau, en y introduisant un flvx d'air, ou de gaz oxygénant, i la profondeur désirée, contrôlé dans son débit, dans la forme de son déploiement, dans sa direction. ( dans la suite du texte, on entendra par fivs - d'air un flux de mélange gazeux oxygénant ou d'air),
Le traitement se fera, soit par installation fixe, pour traiter une portion particulière de la masse d'eau (par exemple un parc ostréicole), ou un bassin fermé, soit par installation mobile, pour traiter tout ou partie d'un plan d'eau, en procédant par balayage systématique du site à traiter. The process according to the invention consists in treating "in situ" wholly or in portions, the mass of water, by introducing into it a flow of air, or of oxygenating gas, at the desired depth, controlled in its flow, in the form of its deployment, in its direction. (in the remainder of the text, fivs - of air will be understood to mean a flow of oxygenating gaseous mixture or of air),
The treatment will be done, either by a fixed installation, to treat a particular portion of the body of water (for example an oyster park), or a closed basin, or by mobile installation, to treat all or part of a plan of water, by systematically scanning the site to be treated.

Le flux d'air sera contenu dans sa partie supérieure par une paroi maintenue à la profondeur désirée par tout système de lestage, ballastage, tension, ou autre. Il sera retenu, ou non, sur ses flancs, par tout système de rabats maintenus en forme par tout moyen de lestage, ballastage, rigidité, gonflage, ou autre. Il sera contenu, ou non, dans sa partie inférieure selon les besoins spécifiques du traitement envisagé. The air flow will be contained in its upper part by a wall maintained at the desired depth by any ballasting, ballasting, tensioning, or other system. It will be retained, or not, on its sides, by any system of flaps kept in shape by any means of ballasting, ballasting, rigidity, inflation, or other. It will be contained, or not, in its lower part according to the specific needs of the envisaged treatment.

Dans une forme de réalisation, la paroi supérieure sera perforée par de multiples trous de faible diamètre, assurant la diffusion d'une multitude de microbulles dans la masse d'eau. In one embodiment, the upper wall will be perforated by multiple holes of small diameter, ensuring the diffusion of a multitude of microbubbles in the body of water.

Dans une forme de réalisation, le flux d'air sera envoyé à l'intérieur d'un volume dont la paroi supéri eàre est perforée par de multiples trous, et dont les autres parois sont étanches, le débit sera alors déterminé par les débits cumulés à travers les micro-perforations. In one embodiment, the air flow will be sent inside a volume whose upper wall is perforated by multiple holes, and whose other walls are sealed, the flow will then be determined by the accumulated flows through micro-perforations.

Dans une forme de réalisation, le flux d'air sera introduit sous une paroi qui le maintient à une profondeur déterminée, lui laissant libre le contact avec les couches situées en dessous de la paroi, la paroi étant rabattue de telle façon qu'elle interdise totalement ou partiellement å leair de s'échapper. Le débit du f Rux d'air sera déterminé par l'importance du brassage envisagé. Dans un positionnement près du fond de cette forme de réalisation, le flux d'air opérera un labourage du fond sous ambiance oxygénante. In one embodiment, the air flow will be introduced under a wall which maintains it at a determined depth, leaving it free contact with the layers located below the wall, the wall being folded down so that it prevents wholly or partially to escape. The flow rate of the air flow will be determined by the extent of the intended mixing. In a position near the bottom of this embodiment, the air flow will plow the bottom under an oxygenating atmosphere.

La figure I montre, en coupe schématique, un dispositif procédant à un labourage du fond d'un plan d'eau selon l'invesstion.  Figure I shows, in schematic section, a device plowing the bottom of a body of water according to the invention.

La figure 2 montre,en coupe schématique, un dispositif procédant à l'oxygénation d'un parc ostréicole, selon l'invention. Figure 2 shows, in schematic section, a device carrying out the oxygenation of an oyster farm, according to the invention.

La figure 3 montre, en coupe schématique, un dispositif procédant à l'oxygénation d'un plan d'eau, selon l'invention. Figure 3 shows, in schematic section, a device carrying out the oxygenation of a body of water, according to the invention.

La figure 4 montre, en coupe schématique1 une instal lation dans un bassin, procédant selon l'invention. Figure 4 shows, in schematic section1 an installation in a basin, according to the invention.

La figure 5 montre, en coupe schématique1 un disposi- tif procédant à l'oxygénation du fond dun plan d'eau, selon l'invention. FIG. 5 shows, in schematic section1, a device carrying out the oxygenation of the bottom of a body of water, according to the invention.

Le dispositif selon la figure 1 est un système flottant, tiré par un kemorqueur (9). Un groupe insufflaut de l'air (1) envoie, par l'intermédiaire d'un tube, un fort flox d'air (3) qui est retenu non loin du fond par une paroi @igide 95). De fiux d'air (3) effectue un brassage vigoureux de la lame d'eau située près du fond, et effectue un labourage et une orygénation forcée de la couche du fond (4). La trop plein d'air se dégage à l'arrière (8) dans la masse d'eau (2). Des flotteurs 96) reliés à la paroi par une structure (7) assurent un réglage de la profondeur de la paroi. The device according to FIG. 1 is a floating system, pulled by a kemoremor (9). A group of air blowers (1) sends, via a tube, a strong air flox (3) which is retained not far from the bottom by a wall (95). Airflow (3) performs vigorous mixing of the water layer located near the bottom, and performs plowing and forced orygenation of the bottom layer (4). The overflow of air is released at the rear (8) in the body of water (2). Floats 96) connected to the wall by a structure (7) provide adjustment of the depth of the wall.

Le dispositif selon la figure 2 est un parc ostréicole composé de bâtis (8) auxquels sont suspendus das grappes de coquillages (7). Une structure gonflée est retenue au fond par des traverses (3). La structure est composée d'un film plastique plein (4), de membranes de liaison 6) et d'un film plastique microperfo- ré (5), Des bouteilles d'air comprimé (1) insufflent un f flux d'air maintenant la structure gonflée en compensant les pertes par les microperforations. Une nappe de microbulles (9) est diffusée dans la masse d'eau (2) autour des coquillages. The device according to Figure 2 is an oyster farm composed of frames (8) to which are hung das clusters of shells (7). An inflated structure is retained at the bottom by crosspieces (3). The structure is composed of a full plastic film (4), of connection membranes 6) and of a microperforated plastic film (5). Bottles of compressed air (1) breathe a flow of air now. the inflated structure by compensating for losses by microperforations. A layer of microbubbles (9) is diffused in the body of water (2) around the shells.

Le dispositif selon la figure 3 est composé d'un remorqueur (9) équipé d'un groupe insufflant de l'air (1) par l'intermédiaire d'une tubulure. la partie tra ctée est composée d'un bâti lesté (6) équipé de rones (7) qui règlent la distance de la paroi microperforée (5) au fond. le fort flux d'air 93) effectue un brassage vigouraux de la lame d'eau située près du fond, effectue un labourage et une oxygénation forcée de la couche du fond 94), une partie de l'air insufflé est diffusé à travers les microperforations dans la masse d'eau (2) sous forme de microbulles (10).  The device according to Figure 3 is composed of a tug (9) equipped with an air-blowing group (1) via a tube. the tra ctée part is composed of a ballasted frame (6) equipped with rones (7) which regulate the distance from the microperforated wall (5) to the bottom. the strong air flow 93) performs vigorous mixing of the water layer located near the bottom, performs plowing and forced oxygenation of the bottom layer 94), part of the blown air is diffused through the microperforations in the body of water (2) in the form of microbubbles (10).

Le trop plein d'air est évacué sur l'arrière (8. The excess air is exhausted on the rear (8.

Le dispositif selon la figure 4 est disposé dans un bassin piscicole. Il est composé d'un éjecteur d'air installé sur une pompe immergée (1) insufflant un cou rant chargé d'air (3) sous une paroi microperforée (5) disposée légèrement inclinée sur l'horizontale. Les bulles d'air sont conduites sur cette pente par la poussée d'Archimède vers la partie opposée à l'éjecteur, et sont diffusées en microbulles (10) dans la masse d'eau (2). The device according to Figure 4 is arranged in a fish pond. It is composed of an air ejector installed on a submerged pump (1) blowing an air-charged current (3) under a microperforated wall (5) arranged slightly inclined to the horizontal. The air bubbles are conducted on this slope by Archimedes' push towards the part opposite to the ejector, and are diffused in microbubbles (10) in the body of water (2).

Le dispositif selon la figure 5 est composé d'un film étanche (5) lesté par des masses (6) qui le maintiennent près du fond. U n dispositif insuffleur d'air (i) est monté sur une embarcation (9), et insuffle,par l'inter médiaire de tubulures, l'air sous la paroi1 et forme ainsi un espace (3) d'échangessous ambiance oxygénante.  The device according to FIG. 5 is composed of a waterproof film (5) ballasted with masses (6) which hold it close to the bottom. An air blower device (i) is mounted on a boat (9), and blows, by means of tubing, the air under the wall1 and thus forms a space (3) for exchange under an oxygenating atmosphere.

Le trop flein d'air est évacué dans la masse d'eau (2) par les côtés, sous forme de bulles (8).The excess air flow is discharged into the body of water (2) from the sides, in the form of bubbles (8).

Observation valable pour tous les dispositifs. le
flux 'd'air peut trie, selon Ici cas, un d'eau chargée d'air.Observation valid for all devices. the
air flow can sort, according to Here case, a water charged with air.

Le procédé selon l'invention est particulièrement destiné au traitement oxygénant de plans d'eau ou bassins  The method according to the invention is particularly intended for the oxygenating treatment of water bodies or basins

Claims (7)

à travers le milieu aquatique. through the aquatic environment. parois retenant ou ralentissant la remontée du gaz walls retaining or slowing the rise of gas tenu à la profondeur désirée par une ou plusieurs held at the desired depth by one or more ractérisé en ce que l'air ou le gaz injecté est con characterized in that the injected air or gas is con neur en oxygène, ca oxygen neur, ca d'air, ou de façon plus générale, d'un gaz à forte te air, or more generally, a gas with high te procédant par injection dans la masse d'eau dun flux by injecting a stream into the body of water REVENDICATIONS 1 ) Procédé d'oxygénation de plans d'eau ou de bassins, CLAIMS 1) Oxygenation process for water bodies or basins, 2 ) Procédé selon la revendication 1 caractérisé en ce 2) Method according to claim 1 characterized in that que la, ou les parois sont perforées de multiples trous that the wall (s) are perforated with multiple holes de faible diamètre (figures 2,3 et 4, indice 5) assu small diameter (Figures 2,3 and 4, index 5) assu un effet de diffusion du gaz sous forme de micro-bulles  a gas diffusion effect in the form of micro-bubbles dans le milieu aquatique. in the aquatic environment. 3 ) Procédé selon les revendications 1 et2 cara  3) Method according to claims 1 and 2 cara ctérisé en ce que les parois constiturnt un dispo ctérisé in that the walls constitute a dispo sitif dont là partie supérieur@ est microperforée,  sitif of which there upper part @ is microperforated, et les autres parties pleines de façon à former des d2ancnts pouvant contenir une certaine pression, et and the other solid parts so as to form d2ancnts which may contain a certain pressure, and assurant une diffusion de microbulles à travers la ensuring a diffusion of microbubbles through the paroi supérieure ( figure 2). upper wall (Figure 2). 4 ) Procédé selon les revendications 1 et 2 carac 4) Method according to claims 1 and 2 charac térisé en ce que la paroi perforée est une paroi ri terized in that the perforated wall is a ri wall gide, disposée de façon légèrement inclinée sur l'ho-  gide, arranged slightly inclined on the ho- rizontale ( partie basse vers l'origine du flux de gaz) rizontale (lower part towards the origin of the gas flow) ( figure 4 indice 5) (figure 4 index 5) 5 ) Procédé selon la revendication 1 caractérisé en 5) Method according to claim 1 characterized in ce que le flux de gaz est envoyé sous la, ou les pa what the gas flow is sent under the, or the pa rois, et opère par brassage des couches situées au kings, and operates by mixing the layers located at the dessous de la, ou des parois.(figures 1 et 3) underside of the wall (s) (Figures 1 and 3) 6 ) Procédé selon la revendication 1 caractérisé en ce 6) Method according to claim 1 characterized in that que le flux de gaz est envoyé à l'intérieur d'un solu  that the gas flow is sent inside a solu me ouvert délimité par la, ou les parois, et opère par open me delimited by the, or the walls, and operates by brassage à l'intérieur de ce volume. brewing inside this volume. 7 ) Procédé selon les revendication 1 et 5 caractéri-  7) Method according to claims 1 and 5 charac- se en ce que la paroi est positionnée à une faible is in that the wall is positioned at a low distance du fond du plan d'eau, et que le flux de gaz distance from the bottom of the water, and that the gas flow est dirigé vers le fond et opère un effet de labourage is directed towards the bottom and operates a plowing effect du fond sous ambiance oxygénante (figures 1 et 3).  bottom under oxygenating atmosphere (Figures 1 and 3).
FR8504086A 1985-03-18 1985-03-18 Process for forced oxygenation of stretches of water or of reservoirs Withdrawn FR2578832A1 (en)

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FR8504086A FR2578832A1 (en) 1985-03-18 1985-03-18 Process for forced oxygenation of stretches of water or of reservoirs

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FR8504086A FR2578832A1 (en) 1985-03-18 1985-03-18 Process for forced oxygenation of stretches of water or of reservoirs

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FR2578832A1 true FR2578832A1 (en) 1986-09-19

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771401A1 (en) * 1997-11-27 1999-05-28 Aqua Tech Aeration and mixing of lakes and deep waters
FR2995796A1 (en) * 2012-09-24 2014-03-28 Philippe Garces Device for exchange of gases in aquatic environments for shellfish farming, has air diffusers that allow enrichment of gas in output zone, and air compressor where air diffusers are immersed in output zone so as to allow diffusion
US10105659B2 (en) * 2013-03-15 2018-10-23 Claudius Jaeger Dual control lateral air manifold assembly
CN112586435A (en) * 2020-12-15 2021-04-02 中国水产科学研究院淡水渔业研究中心 Aquaculture equipment and aquaculture method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR625305A (en) * 1926-03-10 1927-08-08 Air Liquide Device for bringing liquids and gases into contact with automatic circulation
GB875798A (en) * 1957-07-09 1961-08-23 Activated Sludge Ltd Improvements in or relating to the treatment of sewage, or industrial waste effluent
US3880965A (en) * 1972-11-24 1975-04-29 Charles G Dudis Apparatus for aerating a liquid
US3984323A (en) * 1974-09-11 1976-10-05 Frans Evens Apparatus for purifying polluted water
US4029581A (en) * 1974-12-26 1977-06-14 Xodar Corporation Aerating system
FR2355184A1 (en) * 1976-06-17 1978-01-13 British Petroleum Co METHOD AND DEVICE FOR SLUDGE REMOVAL
WO1982000134A1 (en) * 1980-07-03 1982-01-21 Gyulavari I Apparatus for treating liquids

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR625305A (en) * 1926-03-10 1927-08-08 Air Liquide Device for bringing liquids and gases into contact with automatic circulation
GB875798A (en) * 1957-07-09 1961-08-23 Activated Sludge Ltd Improvements in or relating to the treatment of sewage, or industrial waste effluent
US3880965A (en) * 1972-11-24 1975-04-29 Charles G Dudis Apparatus for aerating a liquid
US3984323A (en) * 1974-09-11 1976-10-05 Frans Evens Apparatus for purifying polluted water
US4029581A (en) * 1974-12-26 1977-06-14 Xodar Corporation Aerating system
FR2355184A1 (en) * 1976-06-17 1978-01-13 British Petroleum Co METHOD AND DEVICE FOR SLUDGE REMOVAL
WO1982000134A1 (en) * 1980-07-03 1982-01-21 Gyulavari I Apparatus for treating liquids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771401A1 (en) * 1997-11-27 1999-05-28 Aqua Tech Aeration and mixing of lakes and deep waters
FR2995796A1 (en) * 2012-09-24 2014-03-28 Philippe Garces Device for exchange of gases in aquatic environments for shellfish farming, has air diffusers that allow enrichment of gas in output zone, and air compressor where air diffusers are immersed in output zone so as to allow diffusion
US10105659B2 (en) * 2013-03-15 2018-10-23 Claudius Jaeger Dual control lateral air manifold assembly
CN112586435A (en) * 2020-12-15 2021-04-02 中国水产科学研究院淡水渔业研究中心 Aquaculture equipment and aquaculture method
CN112586435B (en) * 2020-12-15 2023-05-09 中国水产科学研究院淡水渔业研究中心 Aquaculture equipment and aquaculture method

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