Hydrated Lime

Hydrated lime is the common name for calcium hydroxide. In water, it is a source of free hydroxide ions that can neutralize acidity and raise the pH of a solution. Adding hydrated lime to water can also increase or maintain the sample’s alkalinity. Sufficient alkalinity is required for coagulation and is therefore an important factor to control.

Typical Applications of Hydrated Lime:

  • Municipal water and wastewater treatment
  • Industrial wastewater treatment
  • Soil pH correction


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