1. Air filtration technology mainly uses filtration separation methods: by setting up different performance filters to remove the hanging dust particles and microorganisms in the air, that is, through the filter media to trap the dust particles trapped to ensure the cleanliness of the incoming air volume requirements. It uses the filter media for the finer diameter of the fiber, both to make the air flow smoothly through, but also to effectively trap dust particles.

2. Clean technology control filtered dust is generally 0.1 - 10μm dust particles, particle size is small, contains solid particles and liquid particles; organic particles suspended in the atmosphere are microorganisms, plant pollen, flakes and lint, microorganisms generally include viruses, rickettsia, bacteria, fungus, protozoa and algae. Air purification control is mainly for bacteria and bacterium, viruses. Because microorganisms are mainly attached to dust particles, the effective control of dust particles in the air will also effectively control bacteria, bacteria and viruses in the air. To do this, it must be filtered by a particle filter of barrier nature. Generally, the filtration efficiency of ordinary high-efficiency filters for bacteria can reach 99.996%, which can basically meet the filtration and purification requirements of biological clean rooms.

There are five main effects of particle trapping by the filter layer:

1. Interception effect: When a particle of a certain size moves near the fiber surface, the distance from its centerline to the fiber surface is smaller than the radius of the particle, the dust particle will be intercepted by the filter media fiber and deposited.

2. Inertia effect: when the particle mass or speed is large, due to inertia and collision on the fiber surface and deposited.

3. Diffusion effect: small particle size Brownian motion is stronger and easy to collide with the fiber surface.

4. Gravity effect: particles through the fiber layer, deposited on the fiber due to gravity settlement.

5. Electrostatic effect: fibers or particles may be charged, resulting in the electrostatic effect of attracting particles, and the particles will be sucked to the fiber surface.

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