Ozone (03) is one of the strongest oxidizing agents that is readily available. It is used to reduce color, eliminate organic waste, reduce odor and reduce total organic carbon in water. Ozone is created in number of different ways, including ultra violet (UV) light, corona discharge of electricity through an oxygen stream (including air) and several others.

In treating small quantities of waste, the UV Ozonators are the most common, while large-scale systems use either corona discharge or there bulk ozone producing methods.
 
Ozone is formed as oxygen (02) is struck by a source of energy. The bounds that hold the 02 together are broken and three 02 Molecules are combined to from two 03 molecules. The ozone begins to break down fairly quickly and as it dose so, it reverts back in to 02. the bonds that hold the O atoms together are very weak, which is why ozone acts as a strong oxidant agent.