Title:
水処理方法および装置ならびにイオン交換樹脂の再生方法
Document Type and Number:
Japanese Patent JP6764686
Kind Code:
B2
Abstract:
The present invention makes it possible to carry out ion exchange resin regeneration simply at a lower cost even when SO4 2- or CO3 2- are included in water to be treated in a water treatment method using an ion exchange resin and a reverse osmosis membrane. Provided is a water treatment method including a softening step for softening water to be treated that includes SO4 2- and/or CO3 2-, solid components, Na+, and Cl- using an ion exchange resin, a nano filtering step for separating water softened in the softening step into water passing through a nano filter membrane and a concentrated liquid using a nano filter membrane, a reverse osmosis step for separating the water passing through the nano filter membrane into water passing through the reverse osmosis membrane and concentrated water using a reverse osmosis membrane, and an ion exchange resin regeneration step for regenerating the ion exchange resin using concentrated water from the reverse osmosis membrane. Also provided is a water treatment device that is suitable for carrying out this method. Also provided is an ion change resin regenerating method including the softening step, nano filtering step, reverse osmosis step, and the ion exchange resin regenerating step using the concentrated water from the reverse osmosis membrane.
Inventors:
Toru Nakano
Taro Oe
Taro Oe
Application Number:
JP2016099418A
Publication Date:
October 07, 2020
Filing Date:
May 18, 2016
Export Citation:
Assignee:
Organo Corporation
International Classes:
C02F1/44; B01D61/02; B01D61/58; B01J39/04; B01J49/06; B01J49/53; C02F1/42
Domestic Patent References:
| JP2001510730A | ||||
| JP2013528487A | ||||
| JP2008157577A | ||||
| JP2011212628A | ||||
| JP2006095425A | ||||
| JP10015356A | ||||
| JP2013212504A |
Foreign References:
| US20100282675 | ||||
| US20140202957 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata