Because ozone has excellent disinfection and oxidation properties, it is widely used in various water treatment applications that require a highly efficient and ecologically friendly water treatment method.
Ozone is by far the most effective disinfection agent for completely removing contaminants, toxins and many other substances in many water treatment applications.
Ozone can be added at different points throughout the water treatment system – during pre-oxidation, intermediate oxidation or at the final disinfection. When used for pre-oxidation, just before passing the water through a sand filter or granular activated carbon filter (GAC), the filters can remove the already oxidized residual organic matter, and metals, leaving the water odorless, clean and pure.
While chemical treatment (such as Chlorination) may equally disinfect, there is always the downstream concentration of these chemicals and their disinfection byproducts that remain a problem. Ozone, on the other hand, leaves no chemical residue. It is a gas comprised of three oxygen atoms that after acting as an oxidizing agent, reverts back to pure clean oxygen.
The use of ozone prior to bio filtration as the primary disinfectant leads to a more complete disinfection and a lower disinfectant concentration.