| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet ray oxidation treatment apparatus capable of obtaining treated water with an extremely low TOC concentration while preventing a short pass of water to be treated in an ultraviolet ray oxidation treatment apparatus. SOLUTION: A reflux plate 11 is composed of a ring-like reflux plate body part 12 and a seal member 13 disposed on the outer periphery of the reflux plate body part 12. The reflux plate body part 12 is open in the center, spaced from a quartz protective tube 6, and is formed with a recessed portion in the outer periphery by a small-diameter portion 12B of a middle portion thereof and a large-diameter portion 12A of each of both side face portions thereof. The seal member 13 is a ring-shaped body formed from a material such as a synthetic resin or an elastomer with small friction against stainless steel and has an outer diameter substantially equal to the inside diameter of a cylinder 2. COPYRIGHT: (C)2011,JPO&INPIT |
