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2. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

3. History of water filters - Wikipedia

   en.wikipedia.org/wiki/History_of_water_filters

   Water softeners, which use sodium ions to replace water-hardening minerals in water, were first introduced into the water treatment market in 1903. The theory of ion exchange involves replacing undesirable or potentially harmful ions with more desirable or harmless ones.

4. Water filter - Wikipedia

   en.wikipedia.org/wiki/Water_filter

   A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools.

5. The 12 Best Water Softeners of 2022 - AOL

   www.aol.com/lifestyle/remove-damage-causing...

   Hard water can damage hot-water appliances, in addition to your skin and hair. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

6. Zeolite - Wikipedia

   en.wikipedia.org/wiki/Zeolite

   Zeolites are used in laundry detergent as water softeners, removing Ca 2+ and Mg 2+ ions which would otherwise precipitate from the solution. The ions are retained by the zeolites which releases Na + ions into the solution, allowing the laundry detergent to be effective in areas with hard water.

7. Microfiltration - Wikipedia

   en.wikipedia.org/wiki/Microfiltration

   Thorough water rinsing of the membrane modules, pipelines, pumps and other unit connections should be carried out until the end water appears clean. Microfiltration modules are typically set to operate at pressures of 100 to 400 kPa. Such pressures allow removal of materials such as sand, slits and clays, and also bacteria and protozoa.