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Ozonation

WHAT IS OZONE?

  • Ozone is tri atomic Oxygen.
  • O3 is a very strong disinfectant & oxidant. Any pathogen or contaminant that can be disinfected altered or removed via an oxidation process, will be affected by ozone.
  • It is the strongest of all molecules available for disinfection.
  • In water treatment ozone is more than twice as powerful as chlorine and acts 3000 times faster.
  • Ozone can be used as a disinfectant deodorizer, detoxifier and a coagulant.
  • Due to these properties ozone is widely used in air, water and waste water treatment in variety of applications.

Ozonation used in following Industries/Application



ozonator

INDUSTRIES

Wine & Liquor
Food, Beverage & Dairy
Pharmaceutical
Fishery & Agriculture
Hotel
Hospital & Healthcare


ozonator   

APPLICATIONS

Package Drinking Water
Swimming Pool
Portable Drinking Water
Process Water
Cooling Tower
Textile Effluent
Industrial Waste
Sewage Treatment
Laundry Waste Water

WHAT OZONE DOES?

DISINFECTION

  • Ozone kills Bacteria and virus by cellular lyses
  • Colour Removal
  • Ozone bleaches organic coloring matter
  • Odour Removal
  • Ozone oxidizes odour and taste causing compounds
  • COD/BOD reduction
  • Ozone oxidizes COD and BOD
  • Micro-flocculation
  • Ozone assists in micro-flocculation in the filters
  • Oxidation of Inorganic Compounds
  • Ozone forms metal oxides which can be filtered

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

ODOR 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
  • Post-biological Ozonization
  • Ozone is used to polish the water by oxidizing the tough COD after biological treatment

MICRO-FLOCCULATION

It has been observed for more than 30 years that “Pre-ozonation” 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 cat ionic 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 COMPOUNDS

  • 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