| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water treatment apparatus capable of treating a large amount of water and having high durability, and a water treatment and a maintenance method. <P>SOLUTION: Water to be untreated introduced into a water storage tank 9 is fed to a water-sprayed hose 5 by the driving force of a pump 7c and dripped from a plurality of holes 5a in the vicinity of the upper end 3b of a flow path part 3a. Since the surface of the flow path part 3a is made superhydrophilic by a photocatalyst, water is spread so as to be full of width, gradually flows downward while forming a thin water film and finally enters the water storage tank 7a. At this time, the flow path part 3a is irradiated with sunlight or ultraviolet rays from a ultraviolet lamp not shown. Then, the photocatalyst coated on the surface of the flow path part 3a causes a photocatalyst reaction by receiving the ultraviolet rays irradiated through the water film to carry out oxidation decomposition of an organic substance in water. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
