L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Milton Roy Mixing

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L'air Liquide, Société Anonyme Pour L'etude Et Georges Claude

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s George Claude

Air Liquide France Industrie

Philippe Campo

Patrice Cognart

Robert Briend

Fabrice Bouquin

Jérôme Cluzeau

David Maret

Frédéric Savreux

Ulrich Butz

Guillaume Beaudouin

Franck Cousin

Jean-Marc Rabillier

Bruno Alban

Dominique Ibarra

Aur&eacute;lie Grimberg

Dominique Bras

Guillaume Beaudoin

Frederic Goulas

Pauline Le Dru

Maurice Rignon

Florent Bouquet

Alain Trichet

Vincent Boisdon

Nadège Berthier

Michel Muguet

Christian Jalbert

Frederic Savreux

Nadege Berthier

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.

Method for optimizing the energy consumption of an aerator in the field of water treatment

A method for treatment of an industrial effluent with aluminum, comprising:

Method for treating an industrial effluent charged with aluminium using CO

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.

Method and facility for oxygen-doping of waters for animal watering and in particular poultry watering

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:

Equipment for injecting a gas into a cesspool

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 (), equipped at its end with a propeller () immersed in the liquid; a pre-mixing device () comprising an injection device () positioned above or below a mobile aerator () with inclined blades, the propeller being situated at the end of the shaft, under the pre-mixing reactor.

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.

Method of inerting aseptic tanks

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.

Method for reducing sludge of a biological ozone treatment system

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.

Oxidizing processes by oxygen transfer within a liquid medium in a reactor under pressure

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.

Process for reducing sludge derived from the treatment of wastewater by oxygenation and mechanical action

The present invention relates to a process of oxidation, of the wet oxidation or ozonization type, of a liquid contained in a reactor. The gas of the gas headspace is aspirated into the liquid, and the portion which is not dissolved in the liquid is recovered in the gas headspace. The agitation means creates a flow of liquid immediately adjacent to the end of the duct opening into the liquid, and generates a gas/liquid dispersion in the zone, within which the liquid reacts with the gas, then conveys and ejects the said dispersion at its periphery, such that the gas is dissolved in the liquid in the zone extending from the agitation means to the surface of the liquid. The said process is particularly suitable for oxidations which make use of considerable quantities of oxygen or of ozone. It is particularly applied for the oxidation of papermaking liquors.

Oxidation process of the wet oxidation or ozonization type

Method for determining a level of treatment with ozone of a liquid to be treated

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Montigny le Bretonneux, France

Philippe Campo