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An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
Coway Co., Ltd. (Korean: 코웨이 주식회사)is an international manufacturer of household appliances, water purifiers, air purifiers, bidets, water softeners, and mattresses from South Korea. [ 2 ] [ 3 ] [ 4 ] Founded and headquartered in Seoul, Coway is the largest water purifier company in the country and owns subsidiaries in Malaysia ...
Carbon filtering is commonly used for water purification, air filtering and industrial gas processing, for example the removal of siloxanes and hydrogen sulfide from biogas. It is also used in a number of other applications, including respirator masks, the purification of sugarcane , some methods of coffee decaffeination , and in the recovery ...
Water filters produced in Toledo, Ohio in 1895 out of terracotta A large-scale flocculation water filter. A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural ...
Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...
Air ioniser and purifier with its dust collection plates removed. Air ionisers are used in air purifiers to remove particles from air. [3] Airborne particles become charged as they attract charged ions from the ioniser by electrostatic attraction. The particles in turn are then attracted to any nearby earthed (grounded) conductors, either ...
To clean the filter, water is passed quickly upward through the filter, opposite the normal direction (called backflushing or backwashing) to remove embedded or unwanted particles. Prior to this step, compressed air may be blown up through the bottom of the filter to break up the compacted filter media to aid the backwashing process; this is ...
The efficiency of each air purifier should depend on the particular particles, such as dust,pollen,harmful gases,bacterias,in the particular applications,such as home-used,industry-used,workshop,office building,or hospital. And may you kindly show us directly that what kind of place should use what kind of air purifier accordingly. Thank you!