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

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

Lucie Prost

Pascal Crisinel

Pascal Del Gallo

Gilles Lagrange

Lionel Bon

The invention relates to a method for improving conditions in closed circuit seafood and fish farming, comprising the following steps: a) at least part of the water from at least one of the rearing ponds ( ) is recycled, whereby said water is treated one or more times and purified ( ) before it is re-injected into said pond; b) the water recycled during the recycling path indicated in step a) is mixed with a new supply of water ( ); c) all or part of the recycled water ( ) undergoes ozonization and, wherever applicable, the new supply of water ( ) also undergoes ozonization either partially or in full before it is mixed with the re-circulated water.

Method for improving conditions in closed circuit fish farming

Process and plant for the treatment of an article with ozonized water

The treatment of a food product is carried out using ozonized water in at least two containers, each container possibly being associated with a set value of the dissolved-ozone content that it is desirable to maintain therein, by ozonizing a stream of water so as to obtain a dissolved-ozone content of the stream of ozonized water greater than or equal to the highest of the set values of the dissolved-ozone content which are associated with each of said containers, and the dissolved-ozone content in each of the solution containers is analyzed in order to compare the result of each of the analyses with the associated set value and to carry out a feedback operation, where appropriate, depending on the result of each comparison, on the control of the flow of ozonized water injected into the container in question, so as to reestablish the dissolved-ozone content of this solution container at its associated set value.

Process and plant for the controlled washing of food products with ozonized water

Provided is a device for treating a food product in order to reduce or eliminate the detrimental effects of the presence of oxygen which is in contact with the external surface of the product. The device includes a vat provided with a hood, containing a food product whose free surface is in contact with the atmospheric air, a solid electrolyte membrane, each face of the membrane being connected to an electrode, each electrode being connected to a current generator, a heater for making the electrolyte operate at the desired working temperature, a pump for discharging oxygen extracted, by the solid electrolyte, from the atmospheric air present above the food product, in a pipe, a pump for circulating the atmosphere to be treated, an oxygen analyzer for measuring the oxygen level in the gas atmosphere above the food product, a control unit for modifying the operation of the solid electrolyte as a function of the oxygen level and the gas atmosphere to be treated and the recirculation rate of the atmosphere and, optionally, a cooling unit.

Device for reducing the oxidation of food products

A process is provided for treating food products in order to reduce or eliminate the detrimental effects of the presence of oxygen in the atmosphere which is in contact with the products and, more particularly, the external surface of the products. A non-zero quantity of oxygen is extracted from the atmosphere by implementing a solid electrolyte which is an O,ion conductor and is essentially impermeable to the gases. The invention has applicability to preserving frying oil baths.

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Paris, France

Lucie Prost