Boron removal device and boron removal method, and pure water production device and pure water production method
US12338152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2021 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Feb 27, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.