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  2. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    In industrial scale water softening plants, the effluent flow from the re-generation process can precipitate scale that can interfere with sewage systems. [ 3 ] The slippery feeling associated with washing in soft water is caused by the weaker attraction of the soap to the water ions when the water has been stripped of its mineral content.

  3. Espresso heuristic logic minimizer - Wikipedia

    en.wikipedia.org/wiki/Espresso_heuristic_logic...

    The ESPRESSO logic minimizer is a computer program using heuristic and specific algorithms for efficiently reducing the complexity of digital logic gate circuits. [1] ESPRESSO-I was originally developed at IBM by Robert K. Brayton et al. in 1982. [2] [3] and improved as ESPRESSO-II in 1984.

  4. Magnetic water treatment - Wikipedia

    en.wikipedia.org/wiki/Magnetic_water_treatment

    As magnets affect water to a small degree, and water containing ions is more conductive than purer water, magnetic water treatment is an example of a valid scientific hypothesis that failed experimental testing and is thus disproven. Any products claiming to utilize magnetic water treatment are absolutely fraudulent. [1]

  5. Dealkalization of water - Wikipedia

    en.wikipedia.org/wiki/Dealkalization_of_water

    Chloride cycle dealkalizers operate similar to sodium cycle cation water softeners. Like water softeners, dealkalizers contain ion-exchange resins that are regenerated with a concentrated salt solution - NaCl. In the case of a water softener, the cation exchange resin is exchanging sodium (the Na + ion of NaCl) for hardness minerals such as ...

  6. Lime softening - Wikipedia

    en.wikipedia.org/wiki/Lime_softening

    Lime softening (also known as lime buttering, lime-soda treatment, or Clark's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation.

  7. Ion exchange - Wikipedia

    en.wikipedia.org/wiki/Ion_exchange

    Ion exchange is a method widely used in household filters to produce soft water for the benefit of laundry detergents, soaps, and water heaters. This is accomplished by exchanging divalent cations (such as calcium Ca 2+ and magnesium Mg 2+ ) with highly soluble monovalent cations (e.g., Na + or H + ) (see water softening ).

  8. 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.

  9. Drip coffee - Wikipedia

    en.wikipedia.org/wiki/Drip_coffee

    Water seeps through the ground coffee and the paper filter and is then collected in a container placed below a holder used for drip brewing. Drip coffee is made by pouring hot water onto ground coffee beans, allowing it to brew while seeping through. There are several methods for doing this, including using a filter.