OZONE GENERATION - USE OF AIR, OXYGEN OR AIR SIMPSONIZED WITH OXYGEN

Since the 1960s, the use of oxygen for generating ozone in operational potable water plants has increased significant;y. However, at present , treatment of industrial process liquids and effluents require high d osages of ozone and have focused interest in higher ozone concentratio ns in the process gas. As a consequence, the use of oxygen to generate ozone has increased. Different options are possible: purchase liquid oxygen, producing liquid oxygen on-site by cryogenic processes, genera ting on-site gases rich in oxygen by pressure swing or vacuum swing ad sorption-desorption, etc. The purpose of this contribution is to highl ight the fundamental determinants of choice of the feed gas in ozone g eneration by electrical discharge.