The filters in air purifiers

Posted: July 6th, 2013 | Author: | Cleaning

Air indoors can be cleaned by means of special appliances, i.e. air purifiers. Pollution is separated from air with special layered filters, or electrostatic filters or water filters or active carbon filters.

Photo credit: samsungtomorrow / Foter / CC BY-NC-SA

Photo credit: samsungtomorrow / Foter / CC BY-NC-SA

Usually, common water filters are used as air moisturizers. Dusty pollutions permeate through very thin mist created inside the filter. Then they precipitate and flow down to the bottom of the container. The flaw of such method is that various microbiological pollution may develop in the water. Active carbon filters, or any other filter using a material of absorbing properties, clean the air off gas pollution: nitro dioxide, sulfur dioxide and many other organic substances.

Common filters, i.e. layered filters, eliminate only certain particles: flower pollen, flower spores, human hair, dust, carbon particles, animal-based specks and many others. Most of them can be cleaned many times. Electrostatic filters act in a way that makes the air that flows through them clean and purify thin high-voltage wires, which creates a positive electromagnetic field on the particles. Then, the air flows between plates that have a negative electromagnetic field and consequently they attract the particles and keep them inside the filter.

Electrostatic filters are good for holding vapor stemming from various chemical substances, such as cigarette smoke, but are not appropriate for purifying the air at home. They are not supposed to be used in populated rooms, as strong electromagnetic fields produce ozone, which not only has anti-bacterial properties, but also can irritate your respiratory system.

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