CRITERIA FOR THE SELECTION OF THE FEED GAS FOR OZONE GENERATION

This paper brings together the requirements and experiences of the sup plier of ozone generating equipment and the user of this equipment. Th e technical requirements of the ozone generator on the feed gas, the m ain characteristics of the system alternatives, the on-site experience and the development of criteria for future applications are described . The particular application of ozone and the quantities required are detailed to provide a full understanding of the background and environ ment of the case study and its demands on the system selection. The ev olution from an air fed system to an oxygen fed system is outlined. Th is paper describes the joint evaluation of the choice of feed gas for the Purton Water Works by Bristol Water Pie and Ozonia using the exper ience gained at the Littleton Works and the technical assessment durin g the pre-contract stage of the Purton Treatment Works Development Sch eme.