Metawater Co., Ltd.

Nikkiso Company Limited

Senko Riken Co., Ltd.

Ace Water Co., Ltd.

Junichi Shiga

Shinya Watanabe

Tetsumi Ochi

Tsukasa Kusano

Eiichi Tsuga

Yusuke Kawakami

Dabide Yamaguchi

Toshiyuki Kitada

Takahito Sugimoto

Provided is a water treatment apparatus that can uniformly irradiate water to be treated with ultraviolet light in sufficient irradiation quantity and in which a cleaning device and the like can be mounted easily. A water treatment apparatus that subjects water to be treated to ultraviolet treatment using ultraviolet light, the water treatment apparatus comprises: a flow channel through which water to be treated flows; and an ultraviolet irradiation portion that is located on an opposite side of the flow channel from an inlet side, and irradiates the water to be treated flowing in the flow channel with ultraviolet light via a window portion toward the inlet side, the window portion being formed by a transparent member, wherein the flow channel includes a diameter increase portion, and the diameter increase portion is provided with at least one of: a cleaning device used to clean the window portion; and a sensor.

Water treatment apparatus

An inclined sedimentation acceleration apparatus includes an inclined part having a plurality of inclined flow paths through which raw water flows, and side plates disposed on both sides of the inclined part. An upper ridge part of the inclined part is disposed at a height different from that of an upper ridge part of the side plate. Suspended solids are less likely to accumulate on an upper surface of the inclined sedimentation acceleration apparatus.

Inclined sedimentation acceleration apparatus

A water treatment apparatussubjects water to be treated to ultraviolet treatment with ultraviolet light emitted from LED elements. The water treatment apparatuscomprises: a flow channelthrough which water to be treated flows; an LED element housing chamberlocated on outside of the flow channel, with a window portionformed by a transparent member being interposed therebetween; and a plurality of LED elementsarranged in the LED element housing chamber, wherein the LED element housing chamberhas an inletand an outletfor dry gas, and light emitting surfaces of the plurality of LED elementsare exposed to a space in the LED element housing chamber

Water treatment apparatus with dry gas flow

A water treatment device includes: a dual-pipe structure unit including an outer pipe, an inner pipe provided in the outer pipe, and a prevention member provided between the outer pipe and the inner pipe; and a light source unit radiating ultraviolet light in the axial direction to irradiate water subject to treatment flowing in the inner pipe. The inner pipe includes an opposing end facing the light source unit across a gap and an inflow end positioned opposite to the opposing end. The outer pipe includes an outflow port provided on an outer circumferential surface of the outer pipe. The water subject to treatment flowing out of the inner pipe via the gap flows out from the outflow port.

Water treatment device and water treatment method

Growing community of inventors

Tokyo, Japan

Junichi Shiga