Purification method
Physical purification method
1. Adsorption filtration-activated carbon is a kind of porous carbon-containing material, it has a highly developed pore structure, the porous structure of activated carbon provides it with a large amount of surface area, can fully contact with gas (impurities), thus giving The unique adsorption performance of activated carbon makes it very easy to achieve the purpose of absorbing and collecting impurities. Just like magnetism, all molecules have mutual attraction
2. Mechanical filtration—HEPA mesh HEPA (High efficiency particulate air filter), which means high efficiency air filter in Chinese, is a filter that meets the HEPA standard. The effective efficiency of 0.3 micron is 99.998%. The characteristic of HEPA mesh is that air can pass through. , But the small particles cannot pass. The HEPA filter is composed of a stack of sub-glass fiber membranes that are continuously folded back and forth, forming a wavy gasket to place and support the filter boundary.
Electrostatic purification method
Working principle: The working principle of high-voltage electrostatic adsorption dust removal. The electrostatic type adopts the working principle of high-voltage electrostatic adsorption and dust removal. The cathodic wire in the electrostatic field produces a large number of negative ions in the corona layer under the action of high-voltage static electricity, and the negative ions continuously move to the anode under the action of the electrostatic field. When the dust in the air passes through the electric field, the dust is charged by the collision of negative ions, and the charged dust is also subjected to the action of the electrostatic field, moving to the anode (dust collecting electrode), and releasing the charge after reaching the anode. Disadvantages: it can remove dust (cannot remove toxic gas), its efficiency is lower and slower than mechanical type, and it is easy to produce ozone. This model is rated as the worst purifier in the US market.
2. Anion method After the hydroxyl anion is in contact with harmful gases floating in the air, it can reduce the active oxygen (oxygen free radicals) produced by pollutants from the atmosphere, nitrogen oxides, cigarettes, etc., and reduce the harm of excessive active oxygen to the human body; Neutralizes the positively charged air dust settles after no charge
