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  2. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Reverse osmosis (RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions.

  3. Reverse osmosis plant - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis_plant

    In Israel at Ashkelon on the Mediterranean coast, the world's largest reverse osmosis plant is producing 396,000 [6] m³ of water a day at around possibly US$0.50 per m³. [7] In western Saudi Arabia at Yanbu, production started in 1999 at 106,904 m³ of water a day. Later in 2009 with some expansion the production reached to 132,000 m³ of ...

  4. Remotely operated underwater vehicle - Wikipedia

    en.wikipedia.org/wiki/Remotely_operated...

    ROV at work in an underwater oil and gas field. The ROV is using a torque wrench to adjust a valve on a subsea structure.. A remotely operated underwater vehicle (ROUV) [citation needed] or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other general ...

  5. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use. Distilled water was, formerly, ...

  6. Membrane scaling - Wikipedia

    en.wikipedia.org/wiki/Membrane_scaling

    Membrane scaling, like other types of membrane fouling, increases energy costs due to higher operating pressure, and reduces permeate water production. [2] Furthermore, scaling may damage and shorten the lifetime of membranes due to frequent membrane cleanings [3] and therefore it is a major operational challenge in RO applications.

  7. Electrodeionization - Wikipedia

    en.wikipedia.org/wiki/Electrodeionization

    Electrodeionization (EDI) is a water treatment technology that utilizes DC power, ion exchange membranes, and ion exchange resin to deionize water. EDI is typically employed as a polishing treatment following reverse osmosis (RO), and is used in the production of ultrapure water. It differs from other RO polishing methods, like chemically ...

  8. List of United States water companies - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    This is a list of water companies in the United States. For more information see water supply and sanitation in the United States . This list is incomplete ; you can help by adding missing items .

  9. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    Water aeration is the process of increasing or maintaining the oxygen saturation of water in both natural and artificial environments. Aeration techniques are ...

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