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  2. The 8 Best Water Filter Pitchers of 2022 - AOL

    www.aol.com/8-best-water-filter-pitchers...

    The 8 Best Water Filter Pitchers of 2022. Jen Woo. November 21, 2022 at 9:57 AM. Dotdash Meredith and Yahoo Inc. may earn commission or revenue on some items through the links below. Our top pick ...

  3. Water filter - Wikipedia

    en.wikipedia.org/wiki/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 irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

  4. The Best Water Filter Pitcher Models for 2022 - AOL

    www.aol.com/best-water-filter-pitcher-models...

    Water filter pitchers are an essential kitchen item for households that want fresh, clean water from the tap. The right water filter removes impurities and makes water taste better without having ...

  5. Sand filter - Wikipedia

    en.wikipedia.org/wiki/Sand_filter

    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.

  6. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Water softening. Idealized image of water softening process involving replacement of calcium ions in water with sodium ions donated by a cation-exchange resin. Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is ...

  7. Greensand - Wikipedia

    en.wikipedia.org/wiki/Greensand

    Greensand glauconite is used as a water softener for its chemical-exchange properties. Greensand coated with manganese oxide (called manganese greensand) is used in well water treatment systems to remove dissolved (reduced) iron and manganese with the addition of an oxidant, usually potassium permanganate, under controlled pH conditions. [ 14 ]

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