Filter (water)
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A water filter is a device which removes impurities from water by means of a fine physical barrier and/or chemical processes. Filters are used to cleanse water for irrigation, drinking water, aquariums, and swimming pools. Water filters can be bought at stores to filter drinking water. Major brands include Brita and PUR. These water filters remove substances that are harmful to your health, can increase the risk of developing cancer, and taste or smell bad.
The physics of filters is based on sieving, adsorption, ion exchanges and other processes. Unlike a sieve or screen, a filter can remove particles much smaller than the holes through which the water passes.
Examples
See also
External links
- [Types of Filters] - a comparison of the Slow sand filter, Rapid sand filter, Pressure filter & Diatomaceous earth filter. (Mountain Empire Community College, Water/Wastewater Distance Learning)
- [Filtration] - Southwest Biotechnology and Informatics Center
- [Water Filters] - External site discussing various water filters
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