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  2. Lime softening - Wikipedia

    en.wikipedia.org/wiki/Lime_softening

    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. The process is also effective at removing a ...

  3. Calcium chloride - Wikipedia

    en.wikipedia.org/wiki/Calcium_chloride

    Calcium chloride is used as a water hardener in the maintenance of hot tub water, as insufficiently hard water can lead to corrosion and foaming. In the oil industry, calcium chloride is used to increase the density of solids-free brines. It is also used to provide inhibition of swelling clays in the water phase of invert emulsion drilling fluids.

  4. 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 and fittings.

  5. Hot tub - Wikipedia

    en.wikipedia.org/wiki/Hot_tub

    A 5-seat hot tub with a cast acrylic shell, supported by a frame structure, showing vents for water circulation and massage. Outdoor hot tubs. A hot tub is a large tub full of water used for hydrotherapy, relaxation or pleasure. Some have powerful jets for massage purposes. Hot tubs are sometimes also known as " spas " or by the trade name ...

  6. Hard water - Wikipedia

    en.wikipedia.org/wiki/Hard_water

    Hard water. A bathtub faucet with built-up calcification from hard water in Southern Arizona. Hard water is water that has a high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, [1] which are largely made up of calcium and magnesium carbonates ...

  7. Carbonate hardness - Wikipedia

    en.wikipedia.org/wiki/Carbonate_hardness

    Carbonate hardness, is a measure of the water hardness caused by the presence of carbonate (CO2−. 3) and bicarbonate (HCO−. 3) anions. Carbonate hardness is usually expressed either in degrees KH (°dKH) (from the German "Karbonathärte"), or in parts per million calcium carbonate ( ppm CaCO. 3 or grams CaCO.

  8. Bubble bath - Wikipedia

    en.wikipedia.org/wiki/Bubble_bath

    Bubble bath. A bubble bath is a filled bathtub with a layer of soap bubbles on the surface of the water. Less commonly, aerated or carbonated baths are called bubble baths. Bubbles on top of the water, less ambiguously known as a foam bath (see photo), can be obtained by adding a product containing foaming surfactants to water and temporarily ...

  9. Texan whose husband died by hot tub electrocution at Mexican ...

    www.aol.com/news/texan-whose-husband-died-hot...

    They didn't know an electric current was rippling through the hot tub water. “It's absolutely terrifying,” Tej Paranjpe, attorney at the Houston-based firm PMR law, told The Associated Press ...

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