JPS54162683A - Desalting method - Google Patents
Desalting methodInfo
- Publication number
- JPS54162683A JPS54162683A JP7095478A JP7095478A JPS54162683A JP S54162683 A JPS54162683 A JP S54162683A JP 7095478 A JP7095478 A JP 7095478A JP 7095478 A JP7095478 A JP 7095478A JP S54162683 A JPS54162683 A JP S54162683A
- Authority
- JP
- Japan
- Prior art keywords
- water
- concentrated water
- membrane
- concentrated
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011033 desalting Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 16
- 239000012528 membrane Substances 0.000 abstract 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 229920006395 saturated elastomer Polymers 0.000 abstract 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 125000005624 silicic acid group Chemical group 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
PURPOSE: To economically carry out with a high water recovery preventing the deposition of silicic acid scale, by running the water through the next stage permeating membrane heightening pH of concentrated water, after running the water solution containing silicic acid through permeating membrane and concentrating silicic acid in the solution in saturated or nearly saturated state on the concentrated water side.
CONSTITUTION: Water solution dissolved SiO2 in unsaturated state, is supplied under pressure to the permeating membrane apparatus having NaCl removing capacity and is separated in concentrated water and membrane permeated water. Concentration is kept within the limit of concentrating SiO2 in concentrated water to saturated or nearly saturated state on occasion of the above separation. Next, alkaline agent is added to the concentrated water and the above water is supplied to the next stage permeating membrane apparatus under pressure after regulating pH at more than 9.0 and then, is separated in concentrated water and membrane permeated water. Permeated water of fore stage and latter stage is able use in mixed state because of desalted water and the latter stage permeated water is able to use neutralizing by acid because of having high pH value.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7095478A JPS54162683A (en) | 1978-06-14 | 1978-06-14 | Desalting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7095478A JPS54162683A (en) | 1978-06-14 | 1978-06-14 | Desalting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54162683A true JPS54162683A (en) | 1979-12-24 |
Family
ID=13446406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7095478A Pending JPS54162683A (en) | 1978-06-14 | 1978-06-14 | Desalting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54162683A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59112583A (en) * | 1982-12-20 | 1984-06-29 | Showa Denko Kk | Nonaqueous secondary battery |
| JPS6038083A (en) * | 1983-08-09 | 1985-02-27 | Kurita Water Ind Ltd | Desalting method |
| JPS60125208A (en) * | 1983-12-09 | 1985-07-04 | Japan Organo Co Ltd | Regeneration of reverse osmosis membrane apparatus |
| JPS62294484A (en) * | 1986-06-13 | 1987-12-21 | Shinko Fuaudoraa Kk | Reverse osmosis treatment of water containing silica at high concentration |
| JPH03262590A (en) * | 1990-03-13 | 1991-11-22 | Hitachi Plant Eng & Constr Co Ltd | Fresh water generating apparatus |
| JPH11169852A (en) * | 1997-12-16 | 1999-06-29 | Kurita Water Ind Ltd | Pure water producing device |
| CN109224864A (en) * | 2018-09-12 | 2019-01-18 | 广东产品质量监督检验研究院 | A kind of dark color textiles and leathers extract liquor decoloration novel process for pretreating |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5199683A (en) * | 1975-02-28 | 1976-09-02 | Hitachi Ltd | KANSHIKIMAKUBUNRISOCHINIOKERU SUKEERUSEKISHUTSUBOSHIHOHO |
-
1978
- 1978-06-14 JP JP7095478A patent/JPS54162683A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5199683A (en) * | 1975-02-28 | 1976-09-02 | Hitachi Ltd | KANSHIKIMAKUBUNRISOCHINIOKERU SUKEERUSEKISHUTSUBOSHIHOHO |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59112583A (en) * | 1982-12-20 | 1984-06-29 | Showa Denko Kk | Nonaqueous secondary battery |
| JPS6038083A (en) * | 1983-08-09 | 1985-02-27 | Kurita Water Ind Ltd | Desalting method |
| JPH0440077B2 (en) * | 1983-08-09 | 1992-07-01 | Kurita Water Ind Ltd | |
| JPS60125208A (en) * | 1983-12-09 | 1985-07-04 | Japan Organo Co Ltd | Regeneration of reverse osmosis membrane apparatus |
| JPS62294484A (en) * | 1986-06-13 | 1987-12-21 | Shinko Fuaudoraa Kk | Reverse osmosis treatment of water containing silica at high concentration |
| JPH03262590A (en) * | 1990-03-13 | 1991-11-22 | Hitachi Plant Eng & Constr Co Ltd | Fresh water generating apparatus |
| JPH11169852A (en) * | 1997-12-16 | 1999-06-29 | Kurita Water Ind Ltd | Pure water producing device |
| CN109224864A (en) * | 2018-09-12 | 2019-01-18 | 广东产品质量监督检验研究院 | A kind of dark color textiles and leathers extract liquor decoloration novel process for pretreating |
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