Purifying water

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  • Created by: Uswa
  • Created on: 24-03-13 15:00
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  • Purifying Water
    • Water of the correct quality is essential for life
      • For humans: Water should have sufficiently LOW levels of dissolved SALTS and MICROBES
    • Water of the correct quality is produced by:
      • Choosing an appropriate source
      • Passing water through FILTER beds to remove any SOLIDS
      • Sterilising with chlorine
    • Fluorine added to drinking water
      • To improve dental health
    • Chlorine added to drinking water
      • Reduce microbes
    • Water FILTERS (containing carbon and silver) and ION EXCHANGE RESINS
      • Can remove some dissolved substances from tap water
        • To improve quality and taste
    • Pure water can be produced by DISTILLATION
      • But this is expensive and requires a large amount of energy


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