Patent ID: 8487267
Filing Date: 2013-07-16
Classification: C02F

Abstract:
1. An ultraviolet irradiation system comprising: an ultraviolet irradiation apparatus including a plurality of ultraviolet lamps, and configured to emit ultraviolet rays onto water to be treated let in the ultraviolet irradiation apparatus and to discharge the water to be treated after ultraviolet irradiation; a flowmeter configured to measure a flow rate of the water to be treated that passes through the ultraviolet irradiation apparatus; and an ultraviolet-dose monitoring and controlling apparatus configured to monitor an ultraviolet dose of the ultraviolet irradiation apparatus and to control outputs of the ultraviolet lamps, wherein the plurality of ultraviolet lamps include a first ultraviolet lamp and a plurality of second ultraviolet lamps, the ultraviolet irradiation apparatus includes: a distance between the first ultraviolet lamp and the first measurement head is determined to form a linear relationship between a reduction equivalent ultraviolet dose and a ratio of the ultraviolet intensity measured by the first measurement head to the ultraviolet intensity measured by the first measurement head when an output control value of the first ultraviolet lamp is 100%.