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  2. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Brackish water reverse osmosis (BWRO) is the desalination of water with less salt than seawater, usually from river estuaries or saline wells. The process is substantially the same as SWRO, but requires lower pressures and less energy. [1] Up to 80% of the feed water input can be recovered as fresh water, depending on feed salinity.

  3. Reverse osmosis plant - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis_plant

    A reverse osmosis plant is a manufacturing plant where the process of reverse osmosis takes place. Reverse osmosis is a common process to purify or desalinate contaminated water by forcing water through a membrane. Water produced by reverse osmosis may be used for a variety of purposes, including desalination, wastewater treatment ...

  4. Raw water - Wikipedia

    en.wikipedia.org/wiki/Raw_water

    In reverse osmosis, water is transported across a membrane under high pressure, leaving a product that consists mainly of water and a concentrate containing most other components such as minerals and unwanted residues. [12] Many contaminants, including iron, manganese, ammonium, traces of pesticides and medicines, organic micro pollutants, and ...

  5. Water supply and sanitation in Saudi Arabia - Wikipedia

    en.wikipedia.org/wiki/Water_supply_and...

    Furthermore, free water appliances (taps, shower heads, toilet boxes) were distributed, reportedly resulting in a decrease of residential water use of between 25-35%. [13] An unknown, but large proportion of the population is dependent on supply through water tankers. For example, Riyadh experiences water shortages and intermittent supply ...

  6. Water reuse in California - Wikipedia

    en.wikipedia.org/wiki/Water_reuse_in_California

    Reverse osmosis is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. Currently, reverse osmosis is the technology by which water reuse is made possible, in conjunction with filtering methods for larger solids (e.g., screens and settling tanks), other ...

  7. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    The most common means for removing water hardness rely on ion-exchange resin or reverse osmosis. Other approaches include precipitation methods, such as fluidized bed pellet softening, [6] and sequestration by the addition of chelating agents. Distillation and reverse osmosis are the most widely used two non-chemical methods of water softening.