Modular baffle sealed electrocatalytic oxidation reactor

Abstract

The invention provides a modular baffle sealed electrocatalytic oxidation reactor. The reactor includes a tank body, one end of the tank body is equipped with a liquid inlet, and the other end of thetank body is equipped with a liquid outlet, the inner cavity of the tank body is divided into a plurality of reaction bins through a plurality of vertically parallel baffle structures, in two adjacentreaction bins, the oxidation treatment waste liquid in the reaction bin close to the tank body liquid inlet flows from the top to bottom and then from the bottom up in order through the baffle structure into the reaction bin far from the tank body liquid inlet for oxidation treatment again, the waste liquid achieves complete electrolytic treatment through the multistage oxidation reaction of several adjacent reaction bins, and the waste liquid treatment effect is improved. A modular titanium anode group is detachably fixed in each reaction bin, and adopts a titanium substrate coated with a high oxidation overpotential ceramic anode composite interlayer, the composite interlayer is compact, an electrolyte solution difficultly penetrates to the surface of the titanium substrate, the solution erosion resistance of the coating can be improved, the titanium anode group can have good electrocatalytic activity and high oxygen evolution overpotential, and the lifetime of the anode is prolonged.

Description

technical field [0001] The invention relates to the technical field of designing sewage treatment equipment, and in particular relates to a modular baffle-sealed electrocatalytic oxidation reactor. Background technique [0002] With the continuous development of industry and science and technology, electrolytic oxidation, or electrochemistry, is used more and more widely in the treatment of water, including domestic sewage, industrial water, and factory wastewater, and this method is suitable for some difficult waste acids Degradation, conventional biochemical, physicochemical and other treatments cannot solve the problem. Advanced oxidation is also called electrocatalytic oxidation, which has extremely high cost performance. The electrodes in electrocatalytic oxidation not only play the role of transmitting current, but also catalyze the oxidative degradation of organic matter. During this process, no pollution is caused. Known as green water treatment. This method to rem...

AI Technical Summary

Problems solved by technology

The existing electrocatalytic oxidation equipment has low efficiency, high energy consumption and many unfavorable factors in the electrolysis process

For example: the existing electrocatalytic oxidation equipment adopts electroflocculation, and the anode plate is made of iron plate. A large amount of iron ions are generated in the electrolysis process, and a large amount of hazardous waste will be generated in the subsequent treatment; at present, titanium substrate is also used as the anode plate, and the surface of the anode plate Coating some active coatings, but during the electrolysis process, due to the penetration of the acidic electrolyte into the substrate, and a part of the oxygen generated during the electrolysis process is adsorbed on the electrode surface and continuously diffuses or migrates to the titanium substrate, through the active coating Cracks, adsorbed on the surface of the titanium substrate, react with the titanium substrate to form non-conductive TiO2, which deteriorates the conductivity of the electrode, leads to passivation of the anode coating, and shortens the service life of the anode plate; most of the existing electrocatalytic oxidation reactors use With a single tank body, the waste liquid is oxidized by flowing through the anode plate from top to bottom or from bottom to top, which cannot completely oxidize the waste liquid at one time, and the treatment is poor; It is an open type, and a large amount of exhaust gas will be generated during the electrolysis process, resulting in a poor working environment, and there is a risk of electric shock during the operation of the open type; the existing electrocatalytic oxidation equipment uses a copper conductive system, and the acid mist generated during the electrolysis process is harmful to the environment. Corrosion of the conductive system is relatively serious

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