Patent ID: 8552395
Filing Date: 2013-10-08
Classification: C02F

Abstract:
1. An ultraviolet irradiation system that sterilizes, disinfects, and inactivates raw water such as city water or underground water, comprising: a plurality of ultraviolet irradiation devices; a plurality of on-off valves that allow one ultraviolet irradiation device of the ultraviolet irradiation devices to be used or allow the plurality of ultraviolet irradiation devices to be connected in series or in parallel and to be used; and a controller configured to control opening and closing of the on-off valves, wherein the ultraviolet irradiation device comprises: wherein the controller is configured to control opening and closing of the on-off valves to connect the plurality of ultraviolet irradiation devices in parallel when an amount of the raw water exceeds a range of a processing capacity of one ultraviolet irradiation device.