Abstract: An installation for rearing animals includes an injector; a water inlet line and a gas inlet line arriving in the injector; a source of oxygen or a gas mixture including oxygen, capable of delivering oxygen into the gas line; and a water recirculation loop including: a water tank, at atmospheric pressure, to supply the injector with fresh water; a coil capable of receiving water charged with dissolved oxygen from the injector through a pump, wherein the coil creates a water/oxygen contact time; and an overflow valve, to have the water resulting from the coil passed in order to be able to direct the water entirely to the animals' watering or partially to the animals' watering and partially back to the water tank. A method for rearing animals includes boosting water with dissolved oxygen up to saturation for animals' watering.

Abstract: A process for treatment of an effluent, which comprises an injection (3) into the effluent, of CO2 or of a mixture comprising CO2, comprising: a. a measurement of the pH (6) of the effluent is carried out upstream of the point of injection of the CO2 or of the mixture in the process; b. a curve of dose of CO2 to be injected as a function of the pH of a medium for a predetermined volume in litres or in cubic metres was determined beforehand, and this curve is entered into a regulator or automaton (4) capable of controlling the operation of the process; c. the presence of a flow of effluent to be treated is detected, and the dose of CO2 or of mixture, determined by said curve and multiplied by the flow rate of effluent to be treated, is injected.

Abstract: Disclosed is a method for managing the operation of an apparatus for injecting oxygen into a purification basin. The oxygen notably being used by the biomass present in the purification basin to consume the pollution present in an effluent feedstock contained in the basin. The method comprises varying a rotational speed of the shaft by using a frequency variator, wherein an applied variation in speed is between plus 15% and minus 15% of the nominal speed of the shaft.

Abstract: A process for producing a fermented liquid food product includes the following steps. A liquid is pasteurized. The liquid is completely or partially cooled. The liquid arrives in a tank. Ferments are added to the liquid in the tank. Before the liquid arrives in the tank, the tank is inerted through flushing a headspace of the tank with an inert gas.

Abstract: A method for treatment of an industrial effluent with aluminum, comprising: the effluent to be treated is carried to a first zone constituted by a tank having a pH of less than 9.5, so as to promote precipitation of the aluminum in aluminum hydroxide form and to facilitate its removal; a second zone is available and the recirculation of a part of a medium located in the zone 1 to the zone 2 and then return to the zone 1, and the injection of gaseous CO2 into the recirculated medium, are arranged; the solid particles formed in the zone 1 are separated and discharged; wherein in view of the recirculation of the medium where CO2 has been injected, the amount of dissolved CO2 available in the zone 1 is 0.5 to 3 times greater than the requirement necessary for the precipitation of the incoming effluent.

Abstract: A method for removing calcium from an industrial effluent loaded with calcium, comprises the effluent (10) is led into a zone equipped with a settler (12); a part of the effluent is diverted (13), part withdrawn at the settler outlet, part of between 3% and 25% of the flow exiting from the settler, part withdrawn downstream of a high-pressure pump (9), operating at a pressure typically of between 8 and 10 bars; at least one injection (15) of gaseous CO2 into the diverted stream is carried out, thus producing a reduction in the pH of the diverted stream within the range extending from 4 to 6.8, preferably within the range extending from 4.5 to 6; the return of the diverted stream thus treated to the initial effluent, before its arrival in the settler, or to the settler proper is arranged.

Abstract: An installation for rearing animals comprises an injector; a water inlet line and a gas inlet line arriving in the injector; a source of oxygen or a gas mixture comprising oxygen, capable of delivering oxygen into the gas line; and a water recirculation loop including: a water tank, at atmospheric pressure, to supply the injector with fresh water; a coil capable of receiving water charged with dissolved oxygen from the injector through a pump, wherein the coil creates a water/oxygen contact time; and an overflow valve, to have the water resulting from the coil passed in order to be able to direct the water entirely to the animals' watering or partially to the animals' watering and partially back to the water tank. A method for rearing animals comprises boosting water with dissolved oxygen up to saturation for animals' watering.

Abstract: A floating equipment, for injection of a gas into liquid effluents or waste water, and more particularly of a gas rich in oxygen into a basin from the surface, including the following elements: a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.

Abstract: A floating equipment, for injection of a gas into liquid effluents or waste water, and more particularly of a gas rich in oxygen into a basin from the surface, comprising the following elements: a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.

Abstract: The invention relates to floating equipment, for injection of a gas into liquid effluents or waste water, and more particularly of a gas rich in oxygen into a basin from the surface. The floating equipment has the following elements: a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid; a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.

Abstract: Floating equipment, for injection of a gas into liquid effluents or waste water, and more particularly of a gas rich in oxygen into a basin from the surface, comprising the following elements: a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid; a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.

Abstract: The invention relates to a method for treating storage or product preparation tanks, tanks of the type which regularly undergo a hot aseptic washing step, followed by a cold water rinsing step, the method being characterized in that an inert gas is injected into the tank during all or part of the rinsing step.

Abstract: The invention relates to a method for treating storage or product preparation tanks, tanks of the type which regularly undergo a hot aseptic washing step, followed by a cold water rinsing step, the method being characterized in that an inert gas is injected into the tank during all or part of the rinsing step.

Abstract: The invention relates to a method for producing a liquid or semi-liquid product that is sensitive to oxidation, for example beverages, wherein the production method includes a step of deoxygenating an intermediate medium involved in the production of either the liquid or the semi-liquid, and a heating step, for example pasteurization, after the deoxygenation step, characterized in that the method involves injecting a hydrogenated gaseous mixture into the liquid or semi-liquid between the deoxygenation step and the heating step.

Abstract: Methods for treating aqueous effluent, which include reducing sludge formation during the biological treatment of an aqueous effluent. The sludge formation is reduced by injecting an ozone containing gas into an aeration tank which contains the effluent. The affluent is in contact with microorganisms in the tank at least once during the method. The ozone containing gas contains at least 2.5 mg of ozone per liter of the gas.

Abstract: Methods for oxidizing a liquid with an oxidization gas in a closed volume reactor. A feed liquid which contains compounds to be oxidized is fed into the closed volume reactor, and a feed gas containing oxygen is fed into the reactor so as to form a gas overhead above the feed liquid. The overhead is later purged at a specific rate so as to ensure a predetermined oxygen partial pressure is maintained in the gas overhead. The value of this partial pressure corresponds to a predetermined, desired rate of oxidation of the compounds contained in the feed liquid.

Abstract: A method for reducing the production of sludge derived from the treatment of wastewater. The sludge is subjected to a mechanical action in the presence of a gas containing oxygen. The mechanical action is performed in such a way as to destroy the cell walls of between 5% and 80% of the microorganisms present in the sludge.

Abstract: Methods for treating aqueous effluent, which include reducing sludge formation during the biological treatment of an aqueous effluent. The sludge formation is reduced by injecting an ozone containing gas into an aeration tank which contains the effluent. The affluent is in contact with microorganisms in the tank at least once during the method. The ozone containing gas contains at least 2.5 mg of ozone per liter of the gas.

Abstract: A method for reducing the production of sludge derived from the treatment of wastewater. The sludge is subjected to a mechanical action in the presence of a gas containing oxygen. The mechanical action is performed in such a way as to destroy the cell walls of between 5% and 80% of the microorganisms present in the sludge.

Abstract: The subject of the present invention is a process for the oxidation of a liquid contained in a reactor having a closed volume by means of an oxidation gas. The reactor comprises at least one means for feeding the gas into the reactor and at least one means for feeding the liquid into the reactor, at least one means for withdrawing the liquid and at least one means for withdrawing the gas. In the said process, the liquid contains compounds to be oxidized and the oxidation gas contains oxygen, the liquid and the oxygen gas are fed into the reactor in amounts such that a gas overhead is formed above the liquid contained in the reactor and a purge of the gas overhead is carried out. Characteristically, the said purge ensures that there is a predetermined oxygen partial pressure in the gas overhead, the value of this partial pressure corresponding to the desired rate of oxidation of the said compounds.