Device for regenerating activated carbon, comprising at least one electrochemical cell comprising: ■ at least one cathode and at least one anode immersed in an electrolyte solution: - with porous fibres of activated carbon used as an electroactive surface at the cathode and allowing their surface to generate H 2 O 2 during the electro-Fenton reaction, porous fibres on which organic pollutants are adsorbed and which served as a filter for organic pollutants; - the anode comprising a non-active anode material to perform anodic oxidation of organic pollutants, the non-active anode material being defined as a material having an oxygen evolution overvoltage greater than 0.4 V, the non-active anode material being boron-doped diamond (BDD) or sub-stoichiometric titanium oxide; ■ an electrolyte solution with: - an oxygen supply designed to be continuous during the regeneration of the activated carbon in the form of porous fibres; - an initial supply of Fe 2+ ions designed to be continuously regenerated during the electro-Fenton reaction; the device making it possible, during the electro-Fenton reaction, to create oxidizing species at the cathode and anode, the oxidizing species created at the anode by anodic oxidation being at least: •OH, O 3 , preferably: •OH, O 3 , SO 4 •- and S 2 O 8 2- , these oxidizing species mineralizing the organic pollutants at the anode and the cathode and in the electrolyte solution. ■ at least one cathode and at least one anode immersed in an electrolyte solution: - with porous fibres of activated carbon used as an electroactive surface at the cathode and allowing their surface to generate H 2 O 2 during the electro-Fenton reaction, porous fibres on which organic pollutants are adsorbed and which served as a filter for organic pollutants; - the anode comprising a non-active anode material to perform anodic oxidation of organic pollutants, the non-active anode material being defined as a material having an oxygen evolution overvoltage greater than 0.4 V, the non-active anode material being boron-doped diamond (BDD) or sub-stoichiometric titanium oxide; - with porous fibres of activated carbon used as an electroactive surface at the cathode and allowing their surface to generate H 2 O 2 during the electro-Fenton reaction, porous fibres on which organic pollutants are adsorbed and which served as a filter for organic pollutants; - the anode comprising a non-active anode material to perform anodic oxidation of organic pollutants, the non-active anode material being defined as a material having an oxygen evolution overvoltage greater than 0.4 V, the non-active anode material being boron-doped diamond (BDD) or sub-stoichiometric titanium oxide; ■ an electrolyte solution with: - an oxygen supply designed to be continuous during the regeneration of the activated carbon in the form of porous fibres; - an initial supply of Fe 2+ ions designed to be continuously regenerated during the electro-Fenton reaction; - an oxygen supply designed to be continuous during the regeneration of the activated carbon in the form of porous fibres; - an initial supply of Fe 2+ ions designed to be continuously regenerated during the electro-Fenton reaction; <EOS>