Microwave plasma generation module for water treatment, reactor and application thereof

Abstract

The invention belongs to the technical field of microwave plasmas, and relates to a microwave plasma generation module for water treatment, a reactor and application thereof. The microwave plasma generation module is arranged on the side wall of a sewage treatment reactor, has a multi-layer coaxial structure and sequentially comprises an inner electrode, an insulating layer, a gas guiding layer, the insulating layer, an outer electrode and the insulating layer from inside to outside, wherein the outer end of the gas guiding layer is connected with a gas inlet, and the gas inlet is used for connecting an exterior gas circuit; the microwave plasma generation module also comprises a microwave generator and a waveguide tube; a microwave field generated by the microwave generator can be transmitted to an electrode through the waveguide tube so as to generate the microwave plasmas; the front ends of the outer electrode, the inner electrode and the gas guiding layer are all arranged in the reactor and can be in direct contact with to-be-treated water flowing through the reactor; the microwave generator, the waveguide tube and the gas inlet are arranged outside the reactor, the inner electrode is connected with the waveguide tube, and the outer electrode is connected to the ground. The microwave field can be formed in the reactor, so that the reaction efficiency is increased.

Description

Technical field [0001] The invention belongs to the technical field of microwave plasma, and specifically relates to a microwave plasma generating module, a reactor and applications thereof for water treatment. Background technique [0002] Microwave plasma technology is a kind of low-temperature plasma. Compared with arc discharge plasma, microwave plasma has the characteristics of low temperature, basically no plasma noise, and relatively stable microwave generator. The microwave generator generates microwaves and transmits them to the microwave electrode through the waveguide. A strong microwave field is formed around the end of the electrode, which breaks down the surrounding bubbles and generates plasma. Similar to glow discharge, microwave plasma is not formed when it is generated. The plasma effect of the conductive plasma channel is concentrated near the electrode and the bubble, and the energy is more concentrated. At the same time that the microwave plasma is generated...

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