CN1313386C - Electromigration unidirectional osmosis method for desalination of water - Google Patents
Electromigration unidirectional osmosis method for desalination of water Download PDFInfo
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- CN1313386C CN1313386C CNB2005100135207A CN200510013520A CN1313386C CN 1313386 C CN1313386 C CN 1313386C CN B2005100135207 A CNB2005100135207 A CN B2005100135207A CN 200510013520 A CN200510013520 A CN 200510013520A CN 1313386 C CN1313386 C CN 1313386C
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- exchange membrane
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention discloses a unidirectional osmosis desalination method for the electromigration of water, which belongs the desalination technology of the water. Devices used by the method comprise a positive electrode, a negative electrode, a watertight anode separation film and a watertight cathode separation film which are closely contacted with the two electrodes, wherein a cation exchange film and an anion exchange film are arranged between the two separation films. The present invention comprises the process for realizing desalination that salt containing water enters a fresh water flow passage between the cation exchange film and the anion exchange film, cation in water migrates towards a cathode by the cation exchange film, and anion migrates towards an anode by the anion exchange film; thus, fresh water flows out of an outlet in the fresh water flow passage, cation containing water flows between the cation exchange film and the cathode separation film, and anion containing water flows between the anion exchange film and the anode separation film; water flow for enriching the cation <+> and water flow for enriching the anion flow out of electric fields and are quickly mixed so as to complete the neutralization of electric property, and thus, salinity in water can be eliminated. The present invention has the advantages of no electrode reaction, no disturbance on ion migration, simple operation of the devices, reliable running and low energy consumption.
Description
Technical field
The present invention relates to a kind of electromigration unidirectional osmosis method for desalination of water, belong to the desalting technology of water treatment.
Background technology
Under the effect of DC electric field, the ion directional migration in the water when current pass through electric field, can be realized water demineralizing in view of the above.Traditional electrodialytic desalting method is provided with fresh water, dense aquaporin, and under the effect of DC electric field, the ion in the realization water is by the directional migration of fresh water passage to dense aquaporin, because a large amount of dischargings of dense water, the process water utilization ratio is low; Need overcome the difference in chemical potential of dense water and fresh water intermediate ion, energy expenditure is suffered resistance and electrode reaction when overcoming electric current by film, and energy expenditure is bigger; There is electrode reaction in electrodialysis, electrodialysis material requirements height.The capacitance method desalting method then because water mobile disturbance ion has the problem of the current main body of moving back, influences system's ratio of desalinization, and energy expenditure is in electrode reaction.Electric deionizing method adopts increases traditional electrodialytic freshwater room block board thickness, and fills mixed-bed ion exchange resin in freshwater room, causes the freshwater room resistance to flow to increase the device processes ability drop.
Summary of the invention
The object of the present invention is to provide a kind of electromigration unidirectional osmosis method for desalination of water, the apparatus structure of this desalting method is simple, and is reliable, and process cost is low.
The present invention is realized by following technical proposals, based under the effect of DC electric field, ion directional migration reason in the water, the device that adopts comprises negative pole, positive pole, waterproof anodal barrier film, the negative pole barrier film of two electrodes recline, anion-exchange membrane and cationic exchange membrane are set between two barrier films, realize the electromigration unidirectional osmosis method for desalination of water, it is characterized in that comprising following process: after brackish water enters fresh water runner between anion-exchange membrane and the cationic exchange membrane, the positively charged ion Na in the water
+Move negatively charged ion Cl to negative pole by cationic exchange membrane
-Move to positive pole by anion-exchange membrane, so fresh water is flowed out in the outlet in the fresh water runner, flow passage cation water between cationic exchange membrane and negative pole barrier film, flow passage between anion-exchange membrane and anodal barrier film contains anionic water, the outlet of this two runner connects, enrichment positively charged ion Na
+Current and enrichment negatively charged ion Cl
-Current mix rapidly after flowing out electric field, finish electrical neutralization, thereby realize removing of salinity in the water.
The invention has the advantages that: the principle of utilizing DC electric field, the migration of realization ionic, but not generating electrodes reaction, there is not water the move back worry of current main body of disturbance ion that flows yet, adopt the device of this desalting method simple to operate, reliable, energy expenditure is low, and the advanced desalination that is specially adapted to the lower water of salt content is handled.
Description of drawings
Fig. 1 is the apparatus structure synoptic diagram of electromigration unidirectional osmosis method for desalination of the present invention.
1 is anodal among the figure, and 2 is anodal barrier film, and 3 for containing the anionic water runner, and 4 is anion-exchange membrane, and 5 is the fresh water runner, and 6 is cationic exchange membrane, and 7 is the cation water flow passage, and 8 is the negative pole barrier film, and 9 is negative pole, and 10 is direct supply.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 1 is the apparatus structure synoptic diagram of electromigration unidirectional osmosis method for desalination of the present invention.Comprise positive pole 1, anodal barrier film 2 contains anionic water runner 3, anion-exchange membrane 4, fresh water runner 5, cationic exchange membrane 6, cation water flow passage 7, negative pole barrier film 8, negative pole 9 and direct supply 10.Direct supply 10 provides the DC electric field between positive pole 1, the negative pole 9.The outlet that contains anionic water runner 3 and cation water flow passage 7 links to each other.
Direct supply 10 connects positive pole 1, negative pole 9, and the DC electric field between positive pole 1, the negative pole 9 is provided.After the current that contain certain salinity enter fresh water runner 5, because the effect of DC electric field, positively charged ion in the fresh water runner 5 is to negative pole 9 migrations, negatively charged ion in the fresh water runner 5 is to anodal 1 migration, the cationic exchange membrane 6 of positively charged ion by allowing cation permeation, enter cation water flow passage 7, be subjected to stopping of negative pole barrier film 8, positively charged ion enrichment in cation water flow passage 7; The anion-exchange membrane 4 that negatively charged ion sees through by allowing negatively charged ion enters and contains anionic water runner 3, is subjected to stopping of anodal barrier film 2, negatively charged ion enrichment in containing anionic water runner 3.The water that contains in anionic water runner 3, the cation water flow passage 7 all is in flow state, mixes rapidly after the current that contain the current of negatively charged ion enrichment in the anionic water runner 3 and cation water flow passage 7 middle-jiao yang, function of the spleen and stomach ion enrichments flow out electric field, finishes electrical neutralization.Thus, realize removing of salinity in the water.
Embodiments of the invention are installed in the parts of 1-9 on the pedestal, and direct supply 10 connects positive pole 1, negative pole 9.Contour size of the unit(s) is: 700mm * 400mm * 500mm.
Claims (1)
1. the electromigration unidirectional osmosis method for desalination of a water, this method is based under the effect of DC electric field, ion directional migration reason in the water, the device that adopts comprises negative pole, positive pole, waterproof anodal barrier film, the negative pole barrier film of two electrodes recline, anion-exchange membrane and cationic exchange membrane are set between two barrier films, it is characterized in that comprising following process: after brackish water enters fresh water runner between anion-exchange membrane and the cationic exchange membrane, the positively charged ion Na in the water
+Move negatively charged ion Cl to negative pole by cationic exchange membrane
-Move to positive pole by anion-exchange membrane, so fresh water is flowed out in the outlet in the fresh water runner, flow passage cation water between cationic exchange membrane and negative pole barrier film, flow passage between anion-exchange membrane and anodal barrier film contains anionic water, the outlet of this two runner connects, enrichment positively charged ion Na
+Current and enrichment negatively charged ion Cl
-Current mix rapidly after flowing out electric field, finish electrical neutralization, thereby realize removing of salinity in the water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100135207A CN1313386C (en) | 2005-05-18 | 2005-05-18 | Electromigration unidirectional osmosis method for desalination of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100135207A CN1313386C (en) | 2005-05-18 | 2005-05-18 | Electromigration unidirectional osmosis method for desalination of water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721337A CN1721337A (en) | 2006-01-18 |
| CN1313386C true CN1313386C (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100135207A Expired - Fee Related CN1313386C (en) | 2005-05-18 | 2005-05-18 | Electromigration unidirectional osmosis method for desalination of water |
Country Status (1)
| Country | Link |
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| CN (1) | CN1313386C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798150B (en) * | 2010-02-11 | 2012-11-07 | 北京新源国能科技有限公司 | Treatment method of wastewater with high salt content and treatment device thereof |
| CN102583876A (en) * | 2012-01-05 | 2012-07-18 | 秦皇岛禹王环境工程有限公司 | Device and method for treating high-salinity sewage |
| CN109987685B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Device for separating cations in water |
| CN109987684B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Aquatic anion and cation separator |
| CN109991385B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Water quality detection system |
| CN109991384B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Device for detecting heavy metal ion content in water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3217990A1 (en) * | 1982-05-13 | 1983-11-17 | Gerhard Dipl.-Chem. Dr.-Ing. 5628 Heiligenhaus Kunz | Process and apparatus for treating liquids, in particular desalting aqueous solutions |
| CN1526654A (en) * | 2002-01-10 | 2004-09-08 | 陈树庆 | Water treating magnetoelectric dialysis process |
| JP2005066599A (en) * | 2004-10-25 | 2005-03-17 | Mitsubishi Chemicals Corp | Method for electrodialysis and apparatus therefor, method for deionization and apparatus therefor, and method for treating exhaust gas |
-
2005
- 2005-05-18 CN CNB2005100135207A patent/CN1313386C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3217990A1 (en) * | 1982-05-13 | 1983-11-17 | Gerhard Dipl.-Chem. Dr.-Ing. 5628 Heiligenhaus Kunz | Process and apparatus for treating liquids, in particular desalting aqueous solutions |
| CN1526654A (en) * | 2002-01-10 | 2004-09-08 | 陈树庆 | Water treating magnetoelectric dialysis process |
| JP2005066599A (en) * | 2004-10-25 | 2005-03-17 | Mitsubishi Chemicals Corp | Method for electrodialysis and apparatus therefor, method for deionization and apparatus therefor, and method for treating exhaust gas |
Non-Patent Citations (3)
| Title |
|---|
| 海水淡化技术现状及各种淡化方法评述 解利昕，李凭力，王世昌，化工进展，第22卷第10期 2003 * |
| 电去离子(EDI)高纯水新技术及其研究进展 王建友，上海化工，第21期 2000 * |
| 电去离子(EDI)高纯水新技术及其研究进展 王建友，上海化工，第21期 2000;海水淡化技术现状及各种淡化方法评述 解利昕，李凭力，王世昌，化工进展，第22卷第10期 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1721337A (en) | 2006-01-18 |
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