Abstract: A method for treating fluid, notably water, includes a renewal step in order to recover the adsorption capacities of an adsorbent bed, including the extraction of a sample of adsorbent from the adsorbent bed, the determination of a target mean age of the extracted adsorbent sample, in particular by the rejuvenation of at least one portion of the extracted adsorbent sample, at which target mean age the extracted adsorbent has a real abatement of pollutants corresponding to a previously set abatement objective, the rejuvenation of the adsorbent bed to the predetermined target mean age. The method makes it possible to improve the treatment of a fluid by adsorption, and notably to take into account the new contaminants. The disclosure also relates to a plant for treatment according to the proposed method.

Abstract: A method for controlling for PFAS removal from a liquid effluent by a control system (100), the control system including a PFAS treatment unit (10) dedicated to the treatment of perfluoroalkyls and polyfluoroalkyl substances PFAS including at least one treatment stage optionally chosen from a PFAS treatment stage, a short chain PFAS treatment stage and a long chain PFAS treatment stage. The method allows activating the PFAS treatment unit only when PFAS, in particular specific PFAS, are detected into the liquid effluent to treat. A control system (100) to implement the method is also disclosed.

Abstract: A method for determining an optimal dose of coagulant for raw water includes a step of determining a value, for the raw water, of a first organic parameter; a step of determining a value, for the raw water, of a second mineral parameter; a step of determining a class of water for the raw water, characterized by the value of the first organic parameter and the value of the second mineral parameter; a step of determining a value, for the raw water, of a third organic parameter; a step of defining a target value, for the clarified water, of the third organic parameter; a step of selecting a function between the third organic parameter and an added dose of coagulant, said function being selected for the class of water and for the value, for the raw water, of the third organic parameter; a step of using the function to determine a first dose of coagulant in order to reach the target value.

Abstract: A process for monitoring the concentration of organic compounds in a fluid of a network, the fluid includes volatile organic compounds, comprising the following steps: first step of on-line measurement of the concentration of each of the organic compounds of the organic compounds in the fluid by an analyzer, second step of comparing the concentration of each of the organic compounds measured by the analyzer with a predefined threshold value for each of the organic compounds, third step of reducing the concentration of at least one organic compound if the concentration of the at least one organic compound measured by the analyzer is greater than the corresponding predefined threshold value. A device for monitoring the concentration of organic compounds is also provided.

Abstract: A process for the immobilization of a catalyst, in particular an oxidation or synthesis catalyst, on supports making it possible to bring said catalysts into contact with solutions or liquids being treated, characterized in that the deposition of the catalyst is carried out by:

Abstract: Process for purifying and filtering fluids, especially water, containing suspended contaminants and using gravity separation means as well as membrane separation means, in a finishing stage, comprising the step of introducing a pulverulent reagent into the fluid stream to be treated downstream of the gravity separation and upstream of the membrane separation, wherein said pulverulent reagent is recycled from the purge of the membrane separation means to the upstream of the gravity separation means.