What are the methods of air purification?

The air purification method comprises the following steps:

First, photocatalytic technology.

Japanese scientists first discovered the TiO of light? Single crystal electrode can decompose water, and photocatalytic technology was put into use in 1990s. When air and water pass through the photocatalyst material as a technical unit, a large number of hydroxide ions are generated through redox reaction.

These ions diffuse in the air, and through destroying the cell membrane of bacteria, curing the protein disinfection of viruses, decomposing various organic compounds and some inorganic substances, removing harmful gases and odors. The mechanisms of photocatalytic sterilization that have been proved by experiments include cell infiltration, CoA destruction, endotoxin degradation, protein and lipid denaturation and decomposition, and cell mineralization.

Second, quantitative reactive oxygen species technology

Reactive oxygen species (ROS) is a mature technology with a history of 100 years in the world. It can quickly and completely inactivate bacteria, and it is internationally recognized as one of the most environmentally friendly and thorough and effective purification methods when used reasonably. At the same time, its strong oxidation enables it to react with carbonyl (carbon oxygen) and hydrocarbon (hydrocarbon) compounds such as formaldehyde and benzene.

Third, negative ion technology.

Negative ion technology, also known as unipolar ion flow technology, produces negative ion flow, absorbs positively charged suspended particles in the air, makes the particles pile up heavier, and makes them settle out of dissolved gas.

Negative ions can settle particles with a diameter of 0.00 1- 100 micron, but particles with a diameter less than or equal to 2.5 microns are called fine particles, that is, PM2.5, and only small particles with high activity have obvious effects. Negative ion air purifier uses the characteristics of air permeability to fill the whole room with negative ions, which can quickly remove dust and dust without leaving dead ends, and the purification effect is more thorough.

Fourth, activated carbon.

Activated carbon is made from carbon-containing substances such as sawdust, chaff and lignite through carbonization and activation. There are powder (particle size is 10 ~ 50 microns) and granular (particle size is 0.4 ~ 2.4 mm). Universal and porous, with large specific surface area.

The total surface area is 500 ~1000 m2/g. The purification effect of activated carbon is directly related to the pore size, and the purification effect is most obvious when the pore size is close to the particle size. Coconut shell charcoal is a new type of activated carbon, and its smaller diameter is more obvious in aperture ratio.

Five, ecological negative ion generation chip technology

Ecological negative ion chip integrates piezoelectric ceramic negative ion generator and ion converter, which not only realizes the generation of ecological negative ions, but also greatly reduces the volume and thickness of negative ion products. It is the most advanced ecological negative ion generation technology in the world.

The ion converter is an upgraded version of the negative ion converter, and its essence is the pulse frequency intensifier applied to the negative ion generation system. The pulse frequency intensifier can effectively improve the pulse energy of negative ions, so that the air negative ion functional electric appliance adopting this technology can produce ecological negative oxygen ions with small particle size and high activity comparable to that of nature.

Baidu encyclopedia-air purification