1. Plasma is the fourth state of matter and is generated by a high frequency and high voltage discharge. This plasma can break down air and waste gas molecules, producing reactive gases such as free radicals and ions. These active free radicals can effectively destroy viruses and bacteria by disrupting their metabolic processes, leading to death. The plasma can also decompose or reduce organic odor molecules, as well as effectively adsorb and treat fine organic exhaust particulates.
2. The low temperature plasma is characterized by high electron temperatures in the discharge process, but low temperatures of heavy particles. This results in the overall low temperature state of the system. The degradation of pollutants is achieved through the interaction of energetic electrons, free radicals, and other active particles with pollutants in the exhaust gas, leading to their rapid decomposition and subsequent reactions.
3. The basic process of low temperature plasma degradation of pollutants involves several steps:

Direct bombardment of high energy electrons

Oxidation of O atoms or ozone (O2+e to O2+)

Oxidation of H2O (H2O + e to OH + H, H2O + 0 to 2OH, H + O2 to OH + O) leading to the formation of OH free radicals

Reactions of molecular fragments with oxidation.

4. The treatment of untreated waste gases involves the use of a special TiO2 photocatalyst to oxidize hydrogenated filter cotton. This, in combination with ozone, ecological oxygen, and active free radicals, results in multilevel purification of harmful gases, such as waste gas, before they are discharged.