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  2. Diatomaceous earth filtration - Wikipedia

    en.wikipedia.org/wiki/Diatomaceous_earth_filtration

    Pressure filters find widespread application in municipal water systems, industrial settings, residential well water systems, and swimming pools. These DE filtration systems are rather simple and can be used in a vertical or horizontal setting and can be modified to allow the application of multimedia filters.

  3. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    Filters use sieving, adsorption, ion exchanges, biofilms and other processes to remove unwanted substances from water. Unlike a sieve or screen, a filter can potentially remove particles much smaller than the holes through which its water passes, such as nitrates or germs like Cryptosporidium.

  4. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Water passing through activated carbon is commonly used in municipal regions with organic contamination, taste or odors. Many household water filters and fish tanks use activated carbon filters to purify water. Household filters for drinking water sometimes contain silver as metallic silver nanoparticle. If water is held in the carbon block for ...

  5. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    Water filters can be made on-site using local materials such as sand and charcoal (e.g. from firewood burned in a special way). These filters are sometimes used by soldiers and outdoor enthusiasts. Due to their low cost they can be made and used by anyone. The reliability of such systems is highly variable.

  6. Sand filter - Wikipedia

    en.wikipedia.org/wiki/Sand_filter

    Sand filter used for water treatment. Sand filters are used as a step in the water treatment process of water purification. There are three main types; rapid (gravity) sand filters, upward flow sand filters and slow sand filters. All three methods are used extensively in the water industry throughout the world.

  7. Water treatment - Wikipedia

    en.wikipedia.org/wiki/Water_treatment

    Dalecarlia Water Treatment Plant, Washington, D.C. Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.

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