APPARATUS FOR REDUCING TRACE OF HAZARDOUS SUBSTANCE IN WATER

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for reducing the trace of a hazardous substance in water capable of stabilizing treatment efficiency with ultraviolet and hydrogen peroxide by increasing ultraviolet transmittance of water to be treated. SOLUTION: The apparatus includes an ozone treatment unit 21 for injecting ozone into the water to be treated to carry out oxidative decomposition of an ultraviolet light absorption substance by ozone, a hydrogen peroxide injection unit 22 for injecting hydrogen peroxide into ozone-treated water through the ozone treatment equipment 21 and an ultraviolet irradiation unit 23 for irradiating the ozone-treated water containing hydrogen peroxide with ultraviolet to carry out oxidative decomposition of the hazardous substance in the ozone-treated water by a generated hydroxide radical. COPYRIGHT: (C)2007,JPO&INPIT