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  2. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Fabric Filters. Traditional pool filters vary in the micron particle sizes that they can capture. Fabric filters can capture particles smaller than that of standard swimming pool filtration systems. This type of filter connects where the water return to the pool after passing through a standard filter. They are usually in the form of a bag.

  3. 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 ...

  4. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    Portable water purification unit used by International Red Cross and Red Crescent. Portable water purification devices are self-contained, easily transported units used to purify water from untreated sources (such as rivers, lakes, and wells) for drinking purposes. Their main function is to eliminate pathogens, and often also of suspended ...

  5. 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 ...

  6. After an investigation exposes its dangers, Pinterest ...

    techcrunch.com/2023/04/12/after-an-investigation...

    Immediately after the report, two U.S. senators reached out to Pinterest for answers about what was being done and to push for more safety measures. The company said it increased the number of ...

  7. Second Nature raises $16.4M for 'healthy home' subscription ...

    techcrunch.com/2020/03/25/secondnature-raises-16...

    After a confusing trip to the store to purchase an air filter back in 2012, two N.C. State University students, Thad Tarkington and Kevin Barry, came up with the idea to make this routine home ...

  8. 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 .

  9. This in-home water recycler is meant to help the planet, and ...

    www.engadget.com/2020-01-08-hydraloop-home-water...

    At $4,000 per unit, Hydraloops aren't exactly cheap, but those recurring monthly water savings should help recoup that initial investment over time. And honestly, with the earth in the condition ...

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