Sewage Treatment Plant, STP

What is Ozone?
Ozone is a strong oxidizer and creates ozone by oxygen at the site by corona discharge method.
3O2 ⇌ 2O3
Ozone in the food industry has been investigated concerning food preservation, shelf-life extension equipment
sterilization and improvement of food plant effluent.
The objective of water treatment is to produce an adequate and continuous supply of water that is chemical,
bacteriologically and aesthetically pleasing. More specifically, water treatment must produce water that is:
• Palatable (i.e. no unpleasant taste);
• Safe (i.e. does not contain pathogens or chemicals harmful to the consumer);
• Clear (i.e. free from suspended solids and turbidity);
• Colorless and odorless (i.e. aesthetic to drink);
• Reasonably soft (i.e. allows consumers to wash clothes, dishes, themselves, without the use of excessive quantities
of detergents or soap);
• Non-corrosive (i.e. to protect pipework and prevent leaching of metals from tanks or pipes); UNESCO – EOLSS
SAMPLE CHAPTERS OZONE SCIENCE AND TECHNOLOGY – Ozone Reactions with Inorganic and Organic Compounds
in Water – Elina Portjanskaja ©Encyclopedia of Life Support Systems (EOLSS)
• Low organic content (i.e. high organic content results in unwanted biological growth in pipes and storage tanks
that often affects quality).
• Ozone application has increased enormously in number and diversity since the first full-scale application of
ozone to disinfection drinking water in Nice.