36
edits
Starchaser-1 (talk | contribs) m (→External links) |
Starchaser-1 (talk | contribs) (scoutified - removed unnecesary information & links carried over from wikipedia.) |
||
Line 1: | Line 1: | ||
[[Image:Filter mit Antrieb02.jpg|thumb|An industrial water filter with geared motor]] | [[Image:Filter mit Antrieb02.jpg|thumb|An industrial water filter with geared motor]] | ||
A '''water filter''' is a device which removes impurities from | A '''water filter''' is a device which removes impurities from water by means of a fine physical barrier, chemical processes and/or biological process. Filters are used to cleanse water for irrigation, drinking water, aquariums, and swimming pools. | ||
Water filters are primarily used to soften water and remove chemicals such as | Water filters are primarily used to soften water and remove chemicals such as chlorine. Some scientists believe that the contaminants found in drinking unfiltered drinking water can be harmful to your health, even increasing the risk of developing cancer. The most common problem with unfiltered water, however, is a bad taste or smell. | ||
Water filters are also used by recreational hikers, by aid organizations during humanitarian emergencies, and by the military. These filters are usually small, portable and light (1-2 pounds or less) and filter water by working a mechanical hand pump. Dirty water is pumped via a screen-filtered flexible silicon tube through a specialized filter, ending up in a water bottle (or other container, such as a Camel Back). These types of filters work to remove bacteria, protozoa and cysts, all of which can cause disease. Manufacturers of this type of water filter include [[General Ecology]], [[Innova Pure Water]], [[Katadyn]], [[Mountain Safety Research]], and [[Pure Water 2GO]]. | Water filters are also used by recreational hikers, by aid organizations during humanitarian emergencies, and by the military. These filters are usually small, portable and light (1-2 pounds or less) and filter water by working a mechanical hand pump. Dirty water is pumped via a screen-filtered flexible silicon tube through a specialized filter, ending up in a water bottle (or other container, such as a Camel Back). These types of filters work to remove bacteria, protozoa and cysts, all of which can cause disease. Manufacturers of this type of water filter include [[General Ecology]], [[Innova Pure Water]], [[Katadyn]], [[Mountain Safety Research]], and [[Pure Water 2GO]]. | ||
Line 10: | Line 10: | ||
In a domestic emergency, where water needs will last beyond those of stored, bottled water, a device that is specifically certified as a water purifier, and not a water filter, is preferred. | In a domestic emergency, where water needs will last beyond those of stored, bottled water, a device that is specifically certified as a water purifier, and not a water filter, is preferred. | ||
The physics of filters is based on sieving, | 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. | ||
==External links== | ==External links== |
edits