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2. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Such systems do not remove minerals from the water itself. Rather, they can only alter the downstream effects that the mineral-bearing water would otherwise have. These systems do not fall within the term "water softening" but rather "water conditioning". [citation needed] Similar claims for magnetic water treatment are not considered to be ...

3. Water treatment - Wikipedia

   en.wikipedia.org/wiki/Water_treatment

   Dalecarlia Water Treatment Plant, Washington, D.C. Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.

4. Industrial water treatment - Wikipedia

   en.wikipedia.org/wiki/Industrial_water_treatment

   Process water is water that is used in a variety of manufacturing operations, such as: coating and plating; rinsing and spraying; washing, etc. Municipal and ground water often contain dissolved minerals which make it unsuitable for these processes because it would affect product quality and/or increase manufacturing costs. A proper incoming ...

5. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Over the next few years, chlorine disinfection using chloride of lime were rapidly installed in drinking water systems around the world. [48] The technique of purification of drinking water by use of compressed liquefied chlorine gas was developed by a British officer in the Indian Medical Service, Vincent B. Nesfield, in 1903. According to his ...

6. Nanofiltration - Wikipedia

   en.wikipedia.org/wiki/Nanofiltration

   Flow rates range from 25 to 60 m 3 /day for each unit, so commercial filtration requires multiple NF units in parallel to process large quantities of feed water. The pressures required in these units are generally between 4.5 and 7.5 bar. [10] For seawater desalination using a NF-RO system a typical process is shown below. [citation needed]

7. Lime softening - Wikipedia

   en.wikipedia.org/wiki/Lime_softening

   Lime softening produces large volumes of a mixture of calcium carbonate and magnesium hydroxide in a very finely divided white precipitate which may also contain some organic matter flocculated out of the raw water. Processing or disposal of this sludge material may be an additional cost to the process. Drying and re-calcining the waste allows ...