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  2. Kent RO Systems - Wikipedia

    en.wikipedia.org/wiki/Kent_RO_Systems

    Kent RO Systems is an Indian healthcare products company headquartered in Noida, Uttar Pradesh. It makes water purifiers based on the process of reverse osmosis purification. Besides air purifiers, the company also makes vacuum cleaners, vegetable and fruit purifiers as well as water softeners. [ 2 ]

  3. Slingshot (water vapor distillation system) - Wikipedia

    en.wikipedia.org/wiki/Slingshot_(water_vapor...

    Slingshot is a water purification device created by inventor Dean Kamen. [1] Powered by a Stirling engine running on a combustible fuel source, it claims to be able to produce drinking water from almost any source [2] by means of vapor compression distillation, [3] requires no filters, and can operate using cow dung as fuel.

  4. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows the decentralized supply of clean water in emergency and disaster situations for about 400 persons per unit per day. The filter is designed to function with neither chemicals nor energy nor trained personnel.

  5. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Household RO units use a lot of water because they have low back pressure. Household RO water purifiers typically produce one liter of usable water and 3-25 liters of wastewater. [33] The remainder is discharged, usually into the drain. Because wastewater carries the rejected contaminants, recovering this water is not practical for household ...

  6. The best gifts under $100 for everyone on your list - AOL

    www.aol.com/lifestyle/the-best-gifts-to-give...

    In just 15 minutes, you’ll have a heated water bottle pad that stays warm for up to 5 hours. And when it needs reheating, simply plug it back in for another quick 15 minute reheat.

  7. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Groundwater: The water emerging from some deep ground water may have fallen as rain many tens, hundreds, or thousands of years ago. Soil and rock layers naturally filter the ground water to a high degree of clarity and often, it does not require additional treatment besides adding chlorine or chloramines as secondary disinfectants.

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