| 摘要 |
PROBLEM TO BE SOLVED: To surely treat trace pollutant components by supplying ozone on the surface of an adsorbing agent in which pollutant components are previously adsorbed and concentrated by using a high silica adsorbing agent and decomposing oxidatively the pollutant components. SOLUTION: At an adsorbing process, a subject water 7 to be treated is introduced through a valve 10 at a state in which the valve 10 of a water introducing pipe 3 is opened and also a valve 12 of a discharging pipe 4 of the water subjected to adsorbing treatment is opened and a valve 13 of a discharging pipe 5 of the water subjected to ozone treatment is closed. Then at the point at which an adsorption of components to be treated are increased and a concn. of the components to be treated in a water 8 subjected to the adsorbing treatment rises above an allowable value, the valves 10 and 12 are closed to stop an introduction of the subject water 7 to be treated, and valves 11 and 13 are opened to introduce ozonized water 14 into a reaction layer 2 from an ozone generating device 6. The introduced ozone decomposes oxidatively the subject components to be treated adsorbed and concentrated on the surface of the high silica adsorbing agent.
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