| abstract |
(57) [Problem] To provide a method and an apparatus for treating harmful substances capable of efficiently generating hydroxy radicals by increasing the ozone concentration in raw water. A water supply pipe (11) for dissolving ozone gas (3) in water (2) to generate ozone-dissolved water (4), an ozone generator (12), A pressure pump 14, a pressure dissolution tank 16, etc., and ozone-dissolved water 4 And a UV lamp 23 for irradiating the raw water 1 with UV, a scraper 19 for collecting and removing the insoluble particles 5 floating on the raw water 1 and the like, and the ozone gas 3 in the water 2 The dissolved ozone-dissolved water 4 is supplied into the raw water 1 and UV irradiation is performed to generate hydroxyl radicals to decompose the hardly decomposable substances contained in the raw water 1. |