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  2. 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 .

  3. Iron-oxidizing bacteria - Wikipedia

    en.wikipedia.org/wiki/Iron-oxidizing_bacteria

    Iron filters have been used to treat iron bacteria. Iron filters are similar in appearance and size to conventional water softeners but contain beds of media that have mild oxidizing power. As the iron-bearing water is passed through the bed, any soluble ferrous iron is converted to the insoluble ferric state and then filtered from the water.

  4. Biosand filter - Wikipedia

    en.wikipedia.org/wiki/BioSand_Filter

    Biosand filter. A biosand filter (BSF) is a point-of-use water treatment system adapted from traditional slow sand filters. Biosand filters remove pathogens and suspended solids from water using biological and physical processes that take place in a sand column covered with a biofilm. BSFs have been shown to remove heavy metals, turbidity ...

  5. This Is How Often You Should Be Changing Your Water Filter - AOL

    www.aol.com/lifestyle/often-changing-water...

    The post This Is How Often You Should Be Changing Your Water Filter appeared first on Reader's Digest. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...

  6. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    A status indicator that notifies when it is time to change the water filter; An in-door ice caddy, which relocates the ice-maker storage to the freezer door and saves approximately 60 litres (2.1 cu ft) of usable freezer space. It is also removable, and helps to prevent ice-maker clogging. A cooling zone in the refrigerator door shelves.

  7. Model Alexis Ren swears by this ‘life-changing’ water filter

    www.aol.com/model-alexis-ren-swears-life...

    Model Alexis Ren makes an effort to lessen her impact on the environment every day — and her recent online purchases reflect as much. Additionally, Ren, 23, said she has specifically tried to ...

  8. 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.

  9. 21-year-old scientist is fighting climate change one ...

    www.aol.com/finance/21-old-scientist-fighting...

    Ethan Novek is a 21-year-old chemist and inventor. Novek spoke with In The Know about how his parents raised him to have a science-minded curiosity and how researchers who take the biggest risks ...

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