Photocatalytic water treatment method for enhancing free radical generation and concentration functions

The invention discloses a photocatalytic water treatment method for strengthening free radical generation and concentration functions. The photocatalytic water treatment method comprises the following steps: introducing a water body and at least one oxidizing agent into an inner cavity of a first section of a water purification device; starting the oxide generator to promote the oxidizing agent to generate active free radicals which are used for purifying and disinfecting the water body; driving the water body containing the active free radicals to flow into a second section of the water purification device; an ultraviolet lamp in the second section is started to radiate ultraviolet light, so that the ultraviolet light and the active free radicals purify and disinfect the water body together; and the purified water body is driven to flow out from the holes in the second section. According to the method, high-concentration active free radicals are generated step by step in a two-section mode (a first section a