公开(公告)号：US20220388880A1

公开(公告)日：2022-12-08

申请号：US17770185

申请日：2020-07-29

Applicant: ORGANO CORPORATION

Inventor： Keisuke SASAKI ,  Yuki NAKAMURA ,  Kazushige TAKAHASHI

IPC: C02F9/00 ,  C02F1/00 ,  B01D19/00 ,  B01D61/48 ,  B01D61/02 ,  B01D61/54 ,  B01D61/12

Abstract: A water treatment system includes: EDI having deionization chamber that deionizes water that contains boron and concentration chambers in which concentrated water flows; and a cooler to cool the water supplied to deionization chamber or the concentrated water supplied to concentration chambers. Alternatively, water treatment system includes EDI having deionization chamber that deionizes water that contains boron, concentration chambers in which concentrated water flows, and electrode chambers in which electrode water flows; a cooler that adjusts temperature of the water or temperature of the concentrated water supplied to concentration chamber; and a controller that controls the cooler such that the cooler adjusts the temperature of the water supplied to deionization chamber or the temperature of the concentrated water supplied to the concentration chambers within a range of 10-23° C., based on the temperature of the water, temperature of treated water of EDI, the temperature of the concentrated water, or temperature of the electrode water.

公开(公告)号：US20220177340A1

公开(公告)日：2022-06-09

申请号：US17437975

申请日：2020-02-13

Applicant: ORGANO CORPORATION

Inventor： Yuki NAKAMURA ,  Kazushige TAKAHASHI ,  Keisuke SASAKI

IPC: C02F9/00 ,  B01D61/02 ,  B01D61/08 ,  B01D61/48 ,  B01D61/58

Abstract: A pure-water production device including: a first reverse osmosis membrane device to which water to be treated is supplied; a second reverse osmosis membrane device to which permeated water from the first reverse osmosis membrane device is supplied; an electrodeionization device to which permeated water from the second reverse osmosis membrane device is supplied; a brine tank to which concentrated water from the first reverse osmosis membrane device is supplied; and a third reverse osmosis membrane device connected to the brine tank, wherein the second reverse osmosis membrane device is a high-pressure reverse osmosis membrane device, the brine tank is supplied with at least one concentrated water selected from the group consisting of concentrated water from the second reverse osmosis membrane device and concentrated water from the electrodeionization device, wherein permeated water from the third reverse osmosis membrane device is supplied to water to be treated, is used.

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.