Softening apparatus
US10071917B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Apr 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A softening apparatus including an ion exchanger that is repeatedly regenerated using electrolyzed hydrogen ions (H+). The softening apparatus includes a regeneration unit configured to produce regeneration water including hydrogen ions (H+) by electrolyzing water, a softening unit including an ion exchanger regenerated by receiving the regeneration water and configured to convert raw water including hardness components into soft water, and a controller configured to control the regeneration unit to produce regeneration water having a pH of 2 to 4. The ion exchanger has a Si/Al ratio of 1 to 5 and includes an inner pore with a diameter greater than 4 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.