Disinfection is considered to be the primary mechanism for the inactivation/destruction of pathogenic organisms to prevent the spread of waterborne diseases to downstream users and the environment.
Ozone is produced when oxygen (O2 ) molecules are dissociated by an energy source into oxygen atoms and subsequently collide with an oxygen molecule to form an unstable gas, ozone (O3 ), which is used to disinfect wastewater.
Ozone is a very strong oxidant and virucide.
The components of an ozone disinfection system include feed-gas preparation, ozone generation, ozone contacting, and ozone destruction. Air or pure oxygen is used as the feed-gas source and is passed to the ozone generator at a set flow rate. The energy source for production is generated by electrical discharge in a gas that contains oxygen.
In addition to disinfection, another common use for ozone in wastewater treatment is odor control, reductions in BOD up to a certain extent.
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