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As early as 1996, the Ministry of Health of the People’s Republic of China proposed the “Hospital Waiting Room Hygiene Standards” standard number (GB 9671-1996), which was implemented in September of the same year.

Among them, the air quality, noise, and illuminance of the waiting room of the hospital are regulated by standards. The air filtration system in the hospital is also equipped with HEPA filters.
HEPA filters play an important role in hospitals. We know that there are nutrients needed for bacteria to survive in fine particles such as water droplets and dust in the air.

Without these nutrients, bacteria cannot survive alone. Therefore, the more fine particles in the air, the more opportunities for bacteria to contact and attach to them. In this way, bacteria usually attach to dust, water droplets, dander, hair, etc.

and then spread; similarly, because viruses have no complete Enzyme systems cannot perform material metabolism alone, cannot grow on inanimate culture media, and are strictly parasitic.

Therefore, they also rely on close combination with particles containing nutrients to survive. Viruses also attach to dust, relying on dust. As a medium of survival and communication.

Therefore, the HEPA filter can filter these dust particles through adsorption and enter the clean air into the room.
To control the dust in the air is to rely on the filter to filter out, the filter is the core equipment in the air purification process.

The purification system usually has three air filters, at the fresh air outlet, the return air outlet, and at the positive pressure section of the system, and the latter at the end of the air supply.

There are many types of filters, and most hospitals currently use HEPA filters.


Post time: Aug-30-2020