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What is Ozone Does?

HomeWhat is Ozone Does?

Bacteria Destruction

  • Inactivation of bacteria, viruses and fungus by ozone is simply oxidation
  • Ozone oxidizes the complex cell wall of these microbial entities and changes the cell structure

Color Removal

  • Ozone oxidizes organic colours
  • The colour-causing substances are broken down to simple organic compounds
  • Ozone can be used to remove dyes from textile effluent

Odour Removal by Ozone

  • If the odour causing substances are organic in nature, then Ozone reacts with them and oxidizes the organics
  • The reaction is almost instantaneous
  • There are no harmful byproducts as everything is converted into water, oxygen and carbon dioxide

BOD/COD Reduction

  • Ozone oxidizes COD and BOD
  • Pre-biological Ozonization
  • Ozone is used to convert COD to BOD so that bacteria can digest this BOD
Micro Flocculation


  • It has been observed for more than 30 years that “Preozonation” ahead of particle removal units can improve the efficiency significantly, can induce a lower coagulant demand or allow higher flow rates, e.g. in deep-bed filtration
  • Ozone gas is added either before or together with the coagulant (ferric or aluminum salts or cationic polymers) at rather low dosages of 0.5-2mgL-1
  • The terms ``micro- flocculation`` or ``ozone-induced particle destabilization`` are used in practice.
Oxidation of Inorganic Copounds

Oxidation of Inorganic Copounds

  • Ozone oxidizes these heavy metals such as iron & manganese from metallic oxides or hydroxides, which precipitate off and can be removed from the water
  • Oxidation of Cyanide
  • Oxidation of Hydrogen Sulfide
  • Oxidation of Arsenic-III to Arsenic-IV are achieved by Ozone