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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.
21 sty 2017 · Lime water is a dilute solution of calcium hydroxide, $\ce{Ca(OH)2}$, in water. Soda lime is a mixture of sodium hydroxide, $\ce{NaOH}$, (also known as caustic soda) and calcium oxide, $\ce{CaO}$, (also known as quicklime).
25 cze 2024 · Water Treatment: In water treatment, slaked lime is used to soften water by removing hardness-causing minerals. It also helps in removing impurities and contaminants from drinking water.
Ion exchange used in water softening has both advantages and disadvantages. One of its major advantages is that is produces a softer water than does chemical precipitation. Additionally, ion exchange does not produce the large quantity of sludge encountered in the lime-soda ash process.
A combination of lime and soda ash, along with coagulant and flocculant chemicals, is added to raw water to promote a precipitation reaction. This allows softening to take place. Cold Lime Softening. Precipitation softening accomplished at ambient temperatures is referred to as cold lime softening.
23 cze 2024 · Key Points: It is highly reactive and can be used in water treatment, agriculture, construction, and chemical processes. In water treatment, QuickLime helps adjust the pH levels and remove impurities effectively. Farmers use it to improve soil quality, neutralize acidity, and enhance nutrient absorption in crops.
Lime Softening. Summary. Hard water can cause scaling problems in water heaters and soap does not lather well in hard water. Therefore, some water utilities soften water to improve its quality for domestic use. Lime softening is best suited to groundwater sources, which have relatively stable water quality.
