Continuous flow closed gas phase high-voltage pulse discharge water treatment device

Abstract

The invention relates to a device applying a non-equilibrium plasma technology to the field of water treatment, in particular to a continuous flow closed gas phase high-voltage pulse discharge water treatment device which mainly comprises a high-voltage pulse discharge reactor and a secondary reactor, wherein the high-voltage pulse discharge reactor is a cylindrical closed container; a plurality of high voltage electrodes are hung at the upper end of the high-voltage pulse discharge reactor at equal intervals; a gas inlet hole and a liquid inlet hole are formed at the lower end of the high-voltage pulse discharge reactor; a circular plate grounding electrode is arranged in the middle of the high-voltage pulse discharge reactor; the secondary reactor is a rectangular closed container; a vertical baffle is arranged in the middle of the secondary reactor; a reaction space is in a U-shaped structure; one side of the secondary reactor is communicated with the high-voltage pulse discharge reactor by a liquid outlet a; and the other side of the secondary reactor is communicated with an outside container by a liquid outlet b. The device has the advantages that the discharge device is simple in structure, can efficiently degrade organic matters in waste water, and meets requirements on efficient and energy-saving waste water treatment.

Description

technical field [0001] The invention relates to a device for applying non-equilibrium plasma technology to the field of water treatment, in particular to a continuous flow closed gas-phase high-voltage pulse discharge water treatment device. Background technique [0002] With the rapid development of industrial technology and the gradual deterioration of water quality and environment, traditional water treatment technology has been unable to meet the requirements of today's industrial wastewater degradation. [0003] High-voltage pulse discharge water treatment technology is a new type of advanced oxidation technology. The main principle is that gas discharge generates a non-equilibrium plasma area around the high-voltage electrode, which contains a variety of strong oxidizing substances such as hydroxyl radicals, OH radicals, ozone and peroxide. Hydrogen, these active substances can directly react with wastewater pollutants and directly oxidize it into carbon dioxide, water...

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Problems solved by technology

[0004] Usually, the efficiency of plasma generation and the effect of water treatment are affected by many factors, including the way of plasma generation, the structure of the reactor, the environment of plasma generation and the parameters of the discharge power supply, etc. The general reactor structure is relatively simple, The plasma generated by the discharge can only partially reach the water surface and only contact with the liquid surface. The treatment effect of the lower liquid is poor, and it is difficult to effectively treat a large amount of waste water; It is limited to a small area around the discharge electrode, and the active substances produced are not in full contact with the waste liquid. When the gas and liquid in the reactor flow out, the incompletely reacted active substances are directly taken out, resulting in poor wastewater treatment effect, so it must be Design an optimized reactor structure to make the plasma generated by high-voltage discharge fully contact with wastewater, enhance the efficiency of high-voltage discharge to treat wastewater, and meet the requirements of high-efficiency and energy-saving wastewater treatment technology

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