WATER TREATMENT DEVICE AND WATER TREATMENT METHOD

• Main Authors: WATANABE, SHINYA, SHIGA, JUNICHI, OCHI, TETSUMI, KAWAKAMI, YUSUKE, TSUGA, EIICHI, KUSANO, TSUKASA
• Format: Patent
• Language: English; French
• Published: 03.05.2018
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A water treatment device 10 comprises: a double-tube structure unit 12 that includes an outer tube 20 that extends in the axial direction from a first end 21 to a second end 22, an inner tube 30 that is disposed within the outer tube 20 and that extends in the axial direction, and a restriction member that is disposed between the outer tube 20 and the inner tube 30 and that prevents radial-direction displacement of the inner tube 20 relative to the outer tube 30; and a light source unit 14 that is disposed so as to close, in a fluid-tight manner, an opening of the first end 21 of the outer tube 20, and that irradiates ultraviolet light in the axial direction toward water to be treated that flows through the inside of the inner tube 30. The inner tube 30 has: an opposing end 31 which opposes the light source unit 14 with a gap 76 provided between the opposing end 31 and the light source unit 14; and an in-flow end 32 which is disposed on the side opposite the opposing end 31, and into which the water to be treated flows. The outer tube 20 has an out-flow port 26 provided to an outer peripheral surface 23 of the outer tube 20, and the water to be treated that flows out from within the inner tube 30 via the gap 76 flows out from the out-flow port 26.