Electrochemical filter for removing total nitrogen in water

Abstract

The invention belongs to the technical field of water treatment, and discloses an electrochemical filter for removing total nitrogen in water. A water body to be treated is continuously pumped into a cathode reaction chamber through a water inlet, sequentially flows through a three-dimensional nano tip porous cathode and an anode under certain current and voltage, and reacts for a certain period of time, and finally, nitrate nitrogen, ammonia nitrogen and nitrite nitrogen in the water body are converted into nitrogen. The mass transfer distance from a substance to the surface of an electrode can be shortened by utilizing a micron-sized aperture electrode, the collision opportunity of pollutants and the electrode in the liquid flowing process is increased by the nano-tip structure in the pore channel, and meanwhile, reaction ions are limited in the internal channel of the three-dimensional nano-tip porous electrode; and the repulsive interaction of like ions under the action of electric field force is weakened, and the problems that a traditional electrochemical reactor electrode is small in effective reaction area, too large in distance between two electrodes, low in mass transfer efficiency and low in reaction efficiency, reactants are rejected by the electrode, reactant gas is accumulated, and the reactor is difficult to amplify are solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to an electrochemical filter for removing total nitrogen in water. Background technique [0002] Electrochemistry is an effective water treatment technology that uses electrons and active hydrogen to reduce nitrate to produce nitrogen, because it has no pH limit, retains other salts, does not produce concentrated liquid, does not need to add chemicals, does not have backwashing, is easy to automate control, and is effective The advantages of stability and rapid response have been extensively studied and applied. [0003] The electrochemical reactor structure has been extensively studied as an important factor affecting the electrochemical redox efficiency. The plate-trough reactor is the most researched electrocatalytic reactor, but the plate-type electrode has the disadvantages of small effective reaction area, too large distance between two electrodes, limited mass transf...

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Problems solved by technology

[0006] The present invention aims to provide an electrochemical filter for removing total nitrogen in water and its use method. The electrochemical reactor is based on electrodes with three-dimensional nano-tip structure, and a continuous flow reactor is designed to achieve efficient removal of total nitrogen. , to solve the problems of small effective reaction area of ​​electrodes in existing electrochemical reactors, too large distance between electrodes, low mass transfer efficiency, low reaction efficiency, electrode rejection of reactants, accumulation of reaction gases, difficulty in scaling up the reactor, etc.

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