A method of air filter of particulate matter

Removal of particulate matter in the air filter are mainly mechanical filtration, adsorption, electrostatic dust, ion and plasma method and electrostatic electret filtration. Mechanical filters capture particles through major general the following three ways: direct interception, inertial impaction, Brownian diffusion mechanism, which is good but the big drag Air Filter on the effect of fine particulate matter collected in order to air filter obtain a high purification efficiency, compact and requires regular replacement of filters. Adsorption is the use of materials, large surface area and porous structure to capture particulate pollutants, it is easy to plug for gas pollutant removal effect is more pronounced; electrostatic precipitator Diverter Valve is the use of high voltage electrostatic field ionization of the gas so that the charged air filter dust particles adsorbed onto the electrode to close dust method, the drag is small but for larger particles and fibers trap poor, can cause discharge, time-consuming and cumbersome to clean, easy to produce ozone to form secondary pollution. Removal of negative ions Wheat Flour Mixer and plasma is similar to particle contamination of indoor principle, through the particulate matter in the air filter charge, the formation of large agglomerated particles settling, but does not actually remove the particulate matter, is attached to the surface in the vicinity , easily lead to dust again.