Water treatment device and water treatment method

• Main Authors: WATANABE SHINYA, SHIGA JUNICHI, TSUGA EIICHI, OCHI TETSUMI, KAWAKAMI YUSUKE, KUSANO TSUKASA
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2019
• 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 firstend (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