APPARATUS AND METHOD FOR CONTINUOUSLY TREATING WATER

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for continuously treating water containing organic matter with high efficiency. SOLUTION: A liquid to be treated is received in a reaction tank 1 and gaseous ozone is supplied to the reaction tank 1 from below by an ozone diffuser 6 and photocatalyst particles charged in the liquid to be treated are dispersed and fluidized throughout the liquid to be treated by generated ozone bubbles, the water streams due to a circulating pump 15 arranged outside the system and stirring blades 5. The photocatalyst particles fluidized in the liquid to be treated absorb the light energy of an ultraviolet lamp 4 arranged in the reaction tank to generate photocatalytic reaction and the dissolved substance in the liquid to be treated is oxidized and decomposed by radicals generated by the photocatalytic reaction. The treated liquid after oxidative decomposition is separated into the photocatalyst particles and the treated liquid by a sedimentation separation pipe 7 and only the treated liquid is discharged out of the system by a drain pump 9 through a drain pipe 8. Unreacted ozone supplied to the reaction tank is discharged out of the system from an ozone exhaust pipe 10 through a waste ozone device 11.