Patent ID: 7838845
Filing Date: 2010-11-23
Classification: C02F

Abstract:
1. An ultraviolet irradiation water treatment apparatus comprising: a vessel comprising a water inlet pipe, a side portion which has a cylindrical outer wall and a cylindrical inner wall, the water inlet pipe being provided at the side portion while the inner wall and a part of the outer wall are communicated such that a water is flowed into the vessel in a tangential direction of the inner wall, a reversely truncated conical discharge portion which is provided at a lower end of the side portion, a lid which closes an upper end of the side portion, and a water outlet pipe which is provided on a central axis of the side portion while piercing through the lid; rod-shaped ultraviolet lamps which are provided in the vessel and disposed in the lid along a central axis of the side portion; protective tubes which respectively surround the ultraviolet lamps; and a guide plate having one end which is connected to a connection between the water inlet pipe and the side portion, the guide plate curving to the central axis.