Devices and methods for gas purification treatment

A method for gas purification treatment performed using a device for gas purification treatment, the device including:

• a light oxidation reactor, a light source being disposed in the light oxidation reactor, the light source being configured to emit first light and second light, the light oxidation reactor being configured to perform a first-stage purification treatment on a gas under irradiation of the first light;
• a catalytic ozone oxidation reactor that is filled with an ozone oxidation catalyst, and in fluid communication with the light oxidation reactor, the catalytic ozone oxidation reactor being configured for second-stage purification treatment of the gas;
• a microwave transmitter for exciting the light source to emit the first light and the second light;
• and
• a photocatalytic reactor that is filled with a photocatalyst and in fluid communication with the catalytic ozone oxidation reactor, the photocatalytic reactor being configured to perform a third-stage purification treatment on the gas under irradiation of the second light;
• wherein,
• the photocatalytic reactor is adjacent to the light oxidation reactor, and the photocatalytic reactor and the light oxidation reactor are separated by a light transmittance component, so that the second light passes through the light transmittance component into the photocatalytic reactor;
• the method comprising:
• putting the gas into the light oxidation reactor;
• obtaining a first mixed gas by performing the first-stage purification treatment on the gas under the irradiation of the first light;
• putting the first mixed gas into the catalytic ozone oxidation reactor filled with the ozone oxidation catalyst,
• obtaining a second mixed gas by performing the second-stage purification treatment on the first mixed gas;
• putting the second mixed gas into the photocatalytic reactor filled with the photocatalyst;
• obtaining a purified gas by performing the third-stage purification treatment on the second mixed gas under the irradiation of the second light;
• wherein,
• the first light and the second light come from the same light source.