Abstract: Ozone disinfection of water is one kind of key technology in water treatment of recirculating aquaculture system.This paper describes the physical and chemical nature of ozone and several ways of manufacturing,dissolving and detection of ozone.Based on aquaculture water treatment technology research and development trends,some of the role and the application feature that ozone used in aquaculture water treatment factory are analyzed.In recirculating aquaculture,ozone can be used in disinfection and sterilization,oxidation of organic compounds,suspended solids cohesion,deodorization and decolourization.Meanwhile,the application prospect of ozone was discussed.

Key words: ozone, recirculation system, aquaculture