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2. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Since these systems do not work by exchanging ions, like traditional water softeners do, one benefit claimed for the user is the elimination of the need to add salt to the system. 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.

3. Advanced oxidation process - Wikipedia

   en.wikipedia.org/wiki/Advanced_oxidation_process

   Advanced oxidation processes (AOPs), in a broad sense, are a set of chemical treatment procedures designed to remove organic (and sometimes inorganic) materials in water and wastewater by oxidation through reactions with hydroxyl radicals (·OH). [1]

4. Nanotechnology for water purification - Wikipedia

   en.wikipedia.org/wiki/Nanotechnology_for_water...

   Graphene membranes that are formed by graphene oxide molecules or chemically converted graphene that is adhered with 2D nano mediated arrays have the ability to efficiently separate molecules in a gas or in a liquid phase. Graphene-coated nanomembranes are said to be more applicable in water treatment due to its unique properties.

5. Electro-oxidation - Wikipedia

   en.wikipedia.org/wiki/Electro-oxidation

   Simple scheme of the apparatus for electro-oxidation process. The set-up for performing an electro-oxidation treatment consists of an electrochemical cell.An external electric potential difference (aka voltage) is applied to the electrodes, resulting in the formation of reactive species, namely hydroxyl radicals, in the proximity of the electrode surface. [11]

6. List of wastewater treatment technologies - Wikipedia

   en.wikipedia.org/wiki/List_of_wastewater...

   Oil–water separator; Organisms used in water purification; Parallel plate oil–water separator; Photobioreactor; Reed bed; Regenerative thermal oxidizer; Retention basin; Reverse osmosis; Rotating biological contactor; Sand filter; Screen filter; Sedimentation (water treatment) Septic tank; Septic tank conversion [2] Sequencing batch reactor ...

7. Category:Water treatment - Wikipedia

   en.wikipedia.org/wiki/Category:Water_treatment

   Industrial water treatment; Iron oxide adsorption; J. Jewell water filter; ... Slingshot (water vapor distillation system) Soap scum; Sodium hexametaphosphate;