Device for reacting discharge plasma positioned on gas-liquid interface of swirl gas column

Abstract

The invention relates to the technical field of plasma application, and discloses a device for reacting discharge plasmas positioned on the gas-liquid interface of a swirl gas column. The discharge is generated on the gas-liquid interface of the swirl gas column. The device comprises a swirler, an electrode, a high-voltage power supply, a gas-liquid mixing pump, an air compressor and a water tank, wherein the swirler can form a gas column; the electrode is matched with the gas column; and the gas-liquid mixing pump provides a liquid to be treated, which is mixed with a gas-phase medium, for the swirler. According to the device, the liquid to be treated, which is mixed with a gas-phase medium, enters the swirler after being increased to a certain flow velocity, the gas column is generated under the action of centrifugal force, the discharge electrode is switched on with the high-voltage power supply and then generates a high-intensity electric field in a short-distance hollow cylinder positioned between the gas-liquid interface and the outer surface of the electrode, and the gas-phase medium positioned in the high-intensity electric field is activated and generates the phenomenon of annular glow discharge, so that the plasma is generated, and the energy consumption can be reduced to 5-15 W. The device provided by the invention has a function equivalent to directly placing an ozone generation part into the liquid to be treated in an ozone oxidation process and has the advantages of large treatment amount, low energy consumption, simple structure and easiness for popularization.

Description

technical field [0001] The invention relates to a plasma reaction device, in particular to a gas-liquid interface discharge plasma reaction device of a swirl gas column. Background technique [0002] Industrial wastewater has complex components and many types of pollutants. Some of these pollutants are difficult to effectively degrade when treated by conventional methods; Therefore, the plasma water treatment technology with good degradation effect, high treatment efficiency and strong environmental compatibility has attracted widespread attention. Plasma technology under normal temperature and pressure, high-voltage discharge directly or indirectly through the comprehensive action of high-energy electron bombardment, oxidation of various oxidative species (such as free radicals, ozone, hydrogen peroxide, etc.), ultraviolet photolysis, electric field, etc., so as to effectively degrade A variety of pollutants that are difficult to degrade by biochemical means. [0003] At ...

AI Technical Summary

Problems solved by technology

However, the surface of the dielectric layer full of gaps, the formation of metal power electrodes, and the liquid film, etc., have relatively complicated requirements for the structure of the reaction device; secondly, the pressure loss of the liquid to be treated will not be low after passing through a deep and wide distribution of the contact surface; finally, the gas The water treatment of the liquid mixed discharge device is not large, and it is difficult to quickly be promoted in industrial applications

Images