Title:
シリカ／硬度成分含有水の処理方法および処理装置
Document Type and Number:
Japanese Patent JP7137393
Kind Code:
B2
Abstract:
To provide a method and an apparatus for treating silica-containing water which can reduce amounts of generated regeneration waste liquid and concentrated water and can reduce treatment cost in reverse osmosis membrane treatment of the silica/hardness component-containing water.SOLUTION: A method for treating silica/hardness component-containing water includes: a softening treatment step of subjecting treated water containing silica and a hardness component by a softened resin in a softening treatment device 12; a regeneration step of regenerating the softened resin using a regenerant; a reverse osmosis membrane treatment step of passing a softened treatment water obtained by the softening treatment through a reverse osmosis membrane at at least pH 10 in a reverse osmosis membrane treatment apparatus 14 to obtain concentrated water and permeable water; and a solid-liquid separation treatment step of mixing the obtained concentrated water and a regeneration discharge liquid obtained in the regeneration step in a reaction tank 16, and then performing solid-liquid separation treatment in a settling tank 20.SELECTED DRAWING: Figure 1
Inventors:
Toru Nakano
Taro Oe
Taro Oe
Application Number:
JP2018146902A
Publication Date:
September 14, 2022
Filing Date:
August 03, 2018
Export Citation:
Assignee:
Organo Corporation
International Classes:
C02F1/44; B01D61/58; B01J49/50; B01J49/53; C02F1/42; C02F1/56; C02F1/60; C02F9/04; C02F9/08
Domestic Patent References:
| JP2006181445A | ||||
| JP10244259A | ||||
| JP11221579A | ||||
| JP2003300069A |
Foreign References:
| WO2015002309A1 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office