Title:
WATER TREATMENT METHOD AND WATER TREATMENT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/085343
Kind Code:
A1
Abstract:
A water treatment method having: a microbubble generation step (S101) for generating microbubbles in water being treated that contains at least calcium ions, and producing microbubble-containing water being treated; a soft water treatment step (S102) for causing the calcium ions contained in the microbubble-containing water being treated to crystallize as calcium carbonate, and removing the calcium carbonate; and a reverse osmosis membrane treatment step (S103) for separating the water being treated from which the calcium carbonate was removed into reverse osmosis membrane treatment water and reverse osmosis membrane concentrated water using a reverse osmosis membrane.
Inventors:
MATSUI YASUHIRO (JP)
Application Number:
PCT/JP2021/033891
Publication Date:
April 28, 2022
Filing Date:
September 15, 2021
Export Citation:
Assignee:
YOKOGAWA ELECTRIC CORP (JP)
International Classes:
B01D61/58; C02F1/44; C02F1/58; C02F1/68
Domestic Patent References:
| WO2015001678A1 | 2015-01-08 |
Foreign References:
| JPS59112890A | 1984-06-29 | |||
| JPS58143881A | 1983-08-26 | |||
| JP2020032322A | 2020-03-05 | |||
| JP2018035024A | 2018-03-08 | |||
| JPH08182988A | 1996-07-16 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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