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  2. 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. [34] The remainder is discharged, usually into the drain. Because wastewater carries the rejected contaminants, recovering this water is not practical for household ...

  3. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...

  4. Tata Swach - Wikipedia

    en.wikipedia.org/wiki/Tata_Swach

    The Tata Swach is a water purifier developed by Tata Chemicals, a part of the Tata group in India. [1] Swach was designed as a low-cost purifier for Indian low-income groups, who lack access to safe drinking water. [2] [3] The product is sold in three variants as Tata Swach, Tata Swach Smart and Tata Swach Smart Magic. [4]

  5. Reverse osmosis plant - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis_plant

    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 , concentration of contaminants, and the reclamation of dissolved minerals. [ 1 ]

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  7. Minjur Seawater Desalination Plant - Wikipedia

    en.wikipedia.org/wiki/Minjur_Seawater...

    Reverse osmosis (RO) technology is employed at the plant to desalinate the sea water, which contains up to 6.4 ppm aluminium and about 50 NTU of turbidity. [1] Energy recovery units help increase the efficiency of the system by recovering kinetic energy from the brine solution and transferring the same to the desalinated water that has passed ...