公开(公告)号：US20230249992A1

公开(公告)日：2023-08-10

申请号：US18011305

申请日：2021-05-24

Applicant: ORGANO CORPORATION

Inventor： Keisuke SASAKI ,  Fumio SUDO ,  Kazushige TAKAHASHI ,  Tsukasa KONDO ,  Kenji SHIBASAKI ,  Mayu ABE

IPC: C02F1/42 ,  C02F1/469 ,  C02F1/32 ,  C02F1/58 ,  B01J31/30

CPC classification number: C02F1/42 ,  C02F1/4695 ,  C02F1/32 ,  C02F1/58 ,  B01J31/30 ,  C02F2103/04

Abstract: A hydrogen peroxide removing apparatus for removing hydrogen peroxide contained in water to be processed includes: anode and cathode; and hydrogen peroxide removal chamber provided between anode and cathode and at least partially filled with a metal catalyst with hydrogen peroxide decomposition ability, wherein a DC voltage is applied between anode and cathode.

公开(公告)号：US20230183115A1

公开(公告)日：2023-06-15

申请号：US17925052

申请日：2021-03-30

Applicant: ORGANO CORPORATION

Inventor： Kazushige TAKAHASHI ,  Fumio SUDO ,  Yuki NAKAMURA ,  Kenji SHIBASAKI ,  Keisuke SASAKI

IPC: C02F9/00 ,  B01D61/58

CPC classification number: C02F9/00 ,  B01D61/58 ,  C02F1/4695

Abstract: Provided are an apparatus for removing boron and a method for removing boron for reducing the boron concentration in water to be treated, and an apparatus and a method for producing pure water wherein the boron concentration is reduced. An apparatus for removing boron includes: a first electrodeionization device to which water to be treated is supplied; an ultraviolet oxidation device to which the water treated by the first electrodeionization device is supplied; an oxide removal device to which the water treated by the ultraviolet oxidation device is supplied; and a second electrodeionization device to which the water treated by the oxide removal device is supplied. A method for removing boron using the apparatus is provided. The oxide removal device is equipped with a platinum group metal catalyst, and the water that has been treated by the oxide removal device has a hydrogen peroxide concentration of less than 1 ppb.

公开(公告)号：US20220162104A1

公开(公告)日：2022-05-26

申请号：US17438011

申请日：2020-02-13

Applicant: ORGANO CORPORATION

Inventor： Kazushige TAKAHASHI ,  Fumio SUDO ,  Yuki NAKAMURA ,  Kenji SHIBASAKI ,  Keisuke SASAKI

IPC: C02F9/00 ,  B01D61/44 ,  B01D61/02 ,  B01D61/58

Abstract: A method for efficiently treating boron from water to be treated, an apparatus for producing pure water, and a method for producing pure water. An apparatus for removing boron includes a low-pressure reverse osmosis membrane apparatus to which is supplied water to be treated, a pH adjustment apparatus to adjust a pH of permeated water from the low-pressure reverse osmosis membrane apparatus to 5.0 to 9.0, a high-pressure reverse osmosis membrane apparatus to which is supplied the water adjusted by the pH adjustment apparatus, and an electrodeionization to which is supplied permeated water from the high-pressure reverse osmosis membrane apparatus.