Because of the powerful oxidation capability, no producing more toxic compounds than removed ones and neither introducing foreign matter to the medium, ozonation is an ideal technique to deal with the organic pollutants in aqueous and has been applied in COD determining. Advance oxidation processes (AOPs) referring to ozonation are the cooperation of ozonation and other oxidative means, which have been proved that it has a more powerful oxidation capability than that of ozonation alone. For example, a certa...