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Patent Agency Ranking
公开(公告)号：US10889514B2
公开(公告)日：2021-01-12
申请号：US15391273
申请日：2016-12-27
Inventor： Yasuhiro Hashimoto , Daisuke Ino , Tomoyasu Takaoka
Abstract: A water treatment method includes: calculating a total amount of ions contained in a total amount of an aqueous solution introduced into a first tank; when the calculated total amount of ions is greater than a first threshold value, introducing part of slurry in the first tank into a second tank; introducing, with an introducing unit, one of a marker molecule and a stain into the second tank; irradiating, from a second light source, the second tank with visible light; detecting, with a detector, first intensity of the visible light having transmitted through the second tank; and outputting, when the activity of photocatalytic particles calculated based on the first intensity is equal to or smaller than a second threshold value, information prompting replacement of the photocatalytic particles, an instruction of recovering the activity of the photocatalytic particles, or information indicative of deterioration of the photocatalytic particles.
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公开(公告)号：US10472253B2
公开(公告)日：2019-11-12
申请号：US15682545
申请日：2017-08-22
Inventor： Hirofumi Fujita , Yasuhiro Hashimoto , Daisuke Ino
IPC: C02F1/00 , C02F1/32 , C02F1/44 , C02F1/72 , C02F101/30 , C02F103/34 , C02F101/10 , C02F101/22
Abstract: The present disclosure provides a liquid treatment method and apparatus according to which poorly treated liquid is prevented from being discharged to the outside thereof. The liquid treatment apparatus of the present disclosure comprises a channel switch, a return channel that establishes communication between the channel switch and an internal space of a first tank, and a discharge channel that establishes communication between the channel switch and the outside of the liquid treatment apparatus. In the circulation state, the liquid mixture is circulated in the liquid treatment apparatus so as to return a liquid to the first tank through the return channel. If a concentration of the photocatalyst particles contained in the first tank falls within a predetermined range, the channel switch is switched from the circulation state to the discharge state to discharge the liquid to the outside of the liquid treatment apparatus.
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公开(公告)号：US10894733B2
公开(公告)日：2021-01-19
申请号：US15694906
申请日：2017-09-04
Inventor： Hirofumi Fujita , Daisuke Ino , Yasuhiro Hashimoto , Yuko Maruo , Tomoyasu Takaoka , Masahiro Iseki
IPC: C02F9/00 , C02F1/32 , C02F1/44 , C02F1/72 , C02F101/30 , C02F101/20
Abstract: A method for controlling a liquid treatment apparatus of the present disclosure includes: (i) providing the liquid treatment apparatus; (ii) treating a polluted liquid in a photocatalytic reaction tank by a photocatalytic reaction to produce a treated liquid; (iii) introducing a liquid mixture into a separation tank from the photocatalytic reaction tank through a feed passage by a circulation pump; (iv) introducing a filtrate to an outside of the separation tank through an extraction passage while filtering the liquid mixture introduced into the separation tank by a filtration membrane, and feeding the liquid mixture to the photocatalytic reaction tank through an overflow passage; and (v) making a flow rate of the liquid mixture measured by a liquid mixture flow meter higher than a flow rate of the filtrate measured by a filtrate flow meter by controlling the circulation pump by a controller.
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公开(公告)号：US10280093B2
公开(公告)日：2019-05-07
申请号：US15258693
申请日：2016-09-07
Inventor： Tomoyasu Takaoka , Yasuhiro Hashimoto , Daisuke Ino
Abstract: A water treatment method includes: introducing an aqueous solution containing impurities into a first tank; irradiating, from a light source, photocatalytic particles with ultraviolet light, to turn the aqueous solution introduced into the first tank into primary post-treatment water with which the impurities have been treated; reducing pressure in a first chamber by a filtering pump to filter the primary post-treatment water with a filtering membrane, the filtering separating the primary post-treatment water into the photocatalytic particles stopped at the filtering membrane and secondary post-treatment water that passes through the filtering membrane and does not contain the photocatalytic particles; measuring concentration of photocatalytic particles in the first tank; measuring the difference in pressure between the first chamber and the second chamber; and when the concentration of the photocatalytic particles is equal to or smaller than the first threshold value and the difference in pressure between the first chamber and the second chamber is greater than the second threshold value, supplying air to the filtering membrane by operating a compressor.
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公开(公告)号：US10894252B2
公开(公告)日：2021-01-19
申请号：US16512489
申请日：2019-07-16
Inventor： Kohei Hara , Shunsuke Kori , Yasuhiro Hashimoto , Daisuke Ino
Abstract: Provided is a fabrication method of a photocatalytic material in which a single layer of a carbon-based participate is formed on a surface of each of titanium dioxide particle. The method includes (a) loading titanium dioxide particles into an electric furnace comprising a mechanism for rotating a core tube; (b) heating an inside of the core tube of the electric furnace into which the titanium dioxide particles have been loaded to a temperature of not less than 400° C. and not more than 800° C., while an inert gas is introduced into the inside of the core tube; (c) supplying a hydrocarbon gas to the inside of the core tube in addition to the inert gas; and (d) performing a thermal CVD on each of the titanium dioxide particles in a fluidized state inside the core tube, while the core tube is rotated, to form a single layer of a carbon-based precipitate containing graphene on a surface of each of the titanium dioxide particles. A photocatalyst material is provided.
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