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  2. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Fresh water can have widely ranging pH values depending on the geology of the drainage basin or aquifer and the influence of contaminant inputs . If the water is acidic (lower than 7), lime, soda ash, or sodium hydroxide can be added to raise the pH during water purification processes. Lime addition increases the calcium ion concentration, thus ...

  3. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    Instead of using the static pressure of a water supply line to force the water through the filter, pressure is provided by a hand-operated pump. These devices can generate drinkable water from seawater. The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows ...

  4. 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 ...

  5. Fernando Mazariegos - Wikipedia

    en.wikipedia.org/wiki/Fernando_Mazariegos

    The project consisted in the elaboration of a drinking water filter that provides 83 liters a week of pure water, through a homemade filter manufactured. It worked on the technological development applied to the use of materials and materials that favored the filtration process.

  6. 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.

  7. Bakki shower - Wikipedia

    en.wikipedia.org/wiki/Bakki_shower

    Similar to a mountain stream where water cascades over rocks. Biofilms and algae grow on the rocks and feed on the nutrients in the stream, essentially filtering the water. In the case of the Bakki shower, ceramic is placed in trays and the water pumped to the top of the filter and trickles through the media, eventually flowing back to the pond.

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