CN117023733A - Ion separation device for sea water desalination - Google Patents
Ion separation device for sea water desalination Download PDFInfo
- Publication number
- CN117023733A CN117023733A CN202311306155.3A CN202311306155A CN117023733A CN 117023733 A CN117023733 A CN 117023733A CN 202311306155 A CN202311306155 A CN 202311306155A CN 117023733 A CN117023733 A CN 117023733A
- Authority
- CN
- China
- Prior art keywords
- water
- plate
- fixedly arranged
- cathode
- mounting plate
- 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
- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 239000013535 sea water Substances 0.000 title claims abstract description 18
- 238000010612 desalination reaction Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000005554 pickling Methods 0.000 claims description 15
- 239000003014 ion exchange membrane Substances 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 abstract description 16
- 150000001450 anions Chemical class 0.000 abstract description 10
- 238000000909 electrodialysis Methods 0.000 abstract description 8
- 239000012528 membrane Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 description 8
- 239000003011 anion exchange membrane Substances 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
Abstract
The invention discloses an ion separation device for sea water desalination, which comprises: the device comprises a water plate, a mounting plate, a cathode side rheostat and an acid washing input pump, wherein the upper end of the water plate is fixedly provided with water inlets at equal intervals, the upper ends of the water inlets are fixedly provided with raw water pipes, and the rear ends of the raw water pipes are fixedly provided with water flow controllers; the mounting plate is arranged on the outer side of the water plate, the mounting frame is fixedly arranged at the upper end of the mounting plate, and clamping pieces are symmetrically arranged at the outer end of the mounting plate; the cathode side rheostat is fixedly arranged at the left end of the mounting plate, a cathode plate is arranged on the inner side of the cathode side rheostat, and a cathode wire is fixedly arranged at the outer end of the cathode plate. This an ion separation device for sea water desalination is convenient for wash away the incrustation scale on the anion membrane under the condition of not disassembling, makes electrodialysis normal work and steady operation, and the control operating current of being convenient for makes the ion separation more firm, reduces the production of incrustation scale, improves out water quality.
Description
Technical Field
The invention relates to the field of separation devices, in particular to an ion separation device for sea water desalination.
Background
The charge properties according to ions can be classified into a cation exchange membrane (Yang Mo) and an anion exchange membrane (anion membrane). In the electrolyte aqueous solution, the cation membrane allows cations to permeate and repel blocking anions, the anion membrane allows anions to permeate and repel blocking cations, namely the selective permeability of the ion exchange membrane is utilized to enable anions and cations in the solution to migrate by utilizing the selective permeability of the ion exchange membrane to ions in the solution under the action of an externally applied direct current electric field, and the purpose of desalting or concentrating is achieved through the anion exchange membrane and the cation exchange membrane respectively. By utilizing the electrodialysis principle, the substances forming the ionic state of the pollutants can be moved under the action of an electric field so as to realize the separation of the ionized substances.
Scaling is a main factor of normal operation and stable operation of electrodialysis, if the water flow rate is too low, suspended matters in the inlet water can be deposited on a baffle plate member, dead angles are locally generated to enable water distribution to be uneven, if the water flow rate is too high, water conservancy residence time can be shortened, and water quality of the outlet water is easy to reduce, so that an ion separation device for sea water desalination is provided, and the problem in the above is solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an ion separation device for sea water desalination, which can solve the technical problems that scaling is a main factor of normal operation and stable operation of electrodialysis in the existing ion separation device for sea water desalination in the prior art, suspended matters in inlet water can be deposited on a baffle plate member if the flow rate of the water is too low, dead angles are locally generated to cause uneven water distribution, and water conservancy residence time is shortened if the flow rate of the water is too high, and the water quality of outlet water is easy to drop.
In order to solve the technical problems, the invention provides the following technical scheme: a water plate, a mounting plate, a cathode side rheostat and an acid washing input pump,
the upper end of the water plate is fixedly provided with water inlets at equal intervals, the upper end of each water inlet is fixedly provided with a raw water pipe, and the rear end of each raw water pipe is fixedly provided with a water flow controller;
the mounting plate is arranged on the outer side of the water plate, the mounting frame is fixedly arranged at the upper end of the mounting plate, and clamping pieces are symmetrically arranged at the outer end of the mounting plate;
the cathode side rheostat is fixedly arranged at the left end of the mounting plate, a cathode plate is arranged on the inner side of the cathode side rheostat, and a cathode wire is fixedly arranged at the outer end of the cathode plate;
the pickling input pump is fixedly arranged at the upper end of the mounting frame, a cleaning pipe is fixedly arranged at the output end of the pickling input pump, and a cleaning inlet is arranged at the lower end of the cleaning pipe.
As a preferable technical scheme of the invention, the inner end of the water plate is fixedly provided with an ion exchange membrane stack.
As a preferable technical scheme of the invention, the right end of the mounting plate is fixedly provided with an anode plate, and the outer end of the anode plate is fixedly provided with an anode wire.
As a preferable technical scheme of the invention, the right end of the mounting plate is fixedly provided with the anode side rheostat.
As a preferable technical scheme of the invention, the cathode plate and the anode plate are respectively positioned at the left side and the right side of the ion exchange membrane stack.
As a preferable technical scheme of the invention, the water inlet and the cleaning inlet are alternately arranged at the outer end of the water plate.
As a preferable technical scheme of the invention, the water flow controller is fixedly arranged at the upper end of the mounting frame, and the water flow controller is arranged at the front side of the pickling input pump.
As a preferable technical scheme of the invention, the left end of the water flow controller is fixedly provided with a raw water inlet pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. the device is provided with a cleaning inlet, a water inlet and an acid washing input pump, and can be used for carrying out periodic acid washing by using the cleaning inlet, the water inlet and the acid washing input pump to wash away scale on the negative film, so that electrodialysis can work normally and stably;
2. the cathode-side rheostat and the anode-side rheostat are arranged, so that the working current is convenient to control, the anode and the cathode are both in a proper current interval, and the ion separation is more stable and efficient;
3. the water flow controller on the mounting frame can control electrodialysis to work in the rated flow range, so that too low and too high water flow rate is avoided, hydraulic retention time is in a proper range, scale is reduced, and water quality of effluent is improved.
Drawings
FIG. 1 is a schematic view of a left side view angle perspective structure of the present invention;
FIG. 2 is a schematic view of the rear side view angle structure of the present invention;
FIG. 3 is a schematic elevational view of the present invention;
FIG. 4 is a schematic rear view of the present invention;
FIG. 5 is a schematic view of the upper cutaway perspective structure of the present invention;
FIG. 6 is a schematic view of a partially cut-away top view of the present invention;
FIG. 7 is a schematic side view of the present invention;
wherein: 1. a water plate; 2. a mounting plate; 3. a cathode-side varistor; 4. a pickling input pump; 5. a water inlet; 6. a raw water pipe; 7. a water flow controller; 8. a mounting frame; 9. cleaning the tube; 10. a purge inlet; 11. a cathode plate; 12. a cathode line; 13. an anode plate; 14. an anode line; 15. an anode-side varistor; 16. a clamping member; 17. a raw water inlet pipe; 18. an ion exchange membrane stack.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained will become readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.
Examples
Referring to fig. 1-7, the present invention provides a technical solution: an ion separation device for sea water desalination;
the upper end equidistance fixed mounting of water plate 1 has water inlet 5, and water inlet 5's upper end fixed mounting has former water pipe 6, and the rear end fixed mounting of former water pipe 6 has rivers controller 7, and the inner fixed mounting of water plate 1 has ion exchange membrane heap 18, and water inlet 5 and washing entry 10 set up the outer end at water plate 1 in turn, and rivers controller 7 fixed mounting is in the upper end of mounting bracket 8, and rivers controller 7 is installed in the front side of pickling input pump 4. The left end of the water flow controller 7 is fixedly provided with a raw water inlet pipe 17, so that the generation of scale is reduced, and the quality of the discharged water is improved;
the mounting plate 2 is arranged on the outer side of the water plate 1, the mounting frame 8 is fixedly arranged at the upper end of the mounting plate 2, the clamping pieces 16 are symmetrically arranged at the outer end of the mounting plate 2, the anode plate 13 is fixedly arranged at the right end of the mounting plate 2, and the anode wire 14 is fixedly arranged at the outer end of the anode plate 13. The right end of the mounting plate 2 is fixedly provided with an anode side rheostat 15, so that the working current is conveniently controlled, the anode and the cathode are both in a proper current interval, and the ion separation is more stable and efficient;
the cathode side rheostat 3 is fixedly arranged at the left end of the mounting plate 2, a cathode plate 11 is arranged at the inner side of the cathode side rheostat 3, a cathode wire 12 is arranged at the outer end of the cathode plate 11, and the cathode plate 11 and the anode plate 13 are respectively positioned at the left side and the right side of the ion exchange membrane stack 18, so that the operation is convenient;
the pickling input pump 4 is fixedly arranged at the upper end of the mounting frame 8, a cleaning pipe 9 is fixedly arranged at the output end of the pickling input pump 4, a cleaning inlet 10 is fixedly arranged at the lower end of the cleaning pipe 9, and the pickling input pump can perform periodic pickling to wash away scale on a negative film, so that electrodialysis can work normally and stably.
The specific working principle is as follows:
as shown in fig. 1, 3, 4, 5 and 6, when in use, water to be treated is added to the inside of the device through the raw water inlet pipe 17, then water flows enter through the raw water pipe 6 and the water inlet 5, the water plate 1 and the anion exchange membrane and the cation exchange membrane of the ion exchange membrane stack 18 are alternately arranged between the positive electrode of the anode plate 13 and the negative electrode of the cathode plate 11 in sequence to form a multi-layer compartment, anions and cations in the aqueous solution entering the compartment can directionally migrate to the anode and the cathode respectively under the action of an external electric field between the positive electrode and the negative electrode, and as the cation membrane only allows the cations and prevents the anions from passing through, i.e. if the fixed charges on the ion exchange membrane are opposite to the charges of the ions, the ions can pass through, and if the charges are identical, the anions are repelled, so that the anions and the cations in the dilute chamber migrate to the adjacent concentrated chamber, thereby realizing the separation of the ionized substances thereof;
as shown in fig. 1, 2, 3 and 7, the cathode-side varistor 3 and the anode-side varistor 15 can control the current, so as to control the working current so as not to exceed the limiting current, and the working current is 70-90% of the limiting current, when the hardness of raw water is high, the working current is required to take a low value, and the water flow controller 7 on the mounting frame 8 controls electrodialysis to work in the rated flow range, so that the too low and too high water flow rate is avoided;
as shown in fig. 1, 2, 3, 4 and 7, the scale is cleaned by the pickling input pump 4 on the mounting frame 8, the scale on the cathode film is cleaned by acid periodically, the cleaning liquid is added through the cleaning pipe 9 and the cleaning inlet 10 without disassembly, the pickling is performed by using 1 to 2% of diluted hydrochloric acid, and the pickling period is determined according to the scaling condition, so that the series of operations of the ion separation device for seawater desalination is completed.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An ion separation device for desalinating sea water, comprising: the device comprises a water plate (1), a mounting plate (2), a cathode side rheostat (3) and an acid washing input pump (4), and is characterized in that:
the water inlet (5) is fixedly arranged at the upper end of the water plate (1) at equal intervals, the raw water pipe (6) is fixedly arranged at the upper end of the water inlet (5), and the water flow controller (7) is fixedly arranged at the rear end of the raw water pipe (6);
the mounting plate (2) is arranged on the outer side of the water plate (1), a mounting frame (8) is fixedly arranged at the upper end of the mounting plate (2), and clamping pieces (16) are symmetrically arranged at the outer end of the mounting plate (2);
the cathode side rheostat (3) is fixedly arranged at the left end of the mounting plate (2), a cathode plate (11) is arranged on the inner side of the cathode side rheostat (3), and a cathode wire (12) is fixedly arranged at the outer end of the cathode plate (11);
the pickling input pump (4) is fixedly arranged at the upper end of the mounting frame (8), a cleaning pipe (9) is fixedly arranged at the output end of the pickling input pump (4), and a cleaning inlet (10) is fixedly arranged at the lower end of the cleaning pipe (9).
2. An ion separation unit for desalinating sea water according to claim 1, wherein: an ion exchange membrane stack (18) is fixedly arranged at the inner end of the water plate (1).
3. An ion separation unit for desalinating sea water according to claim 1, wherein: an anode plate (13) is fixedly arranged at the right end of the mounting plate (2), and an anode wire (14) is fixedly arranged at the outer end of the anode plate (13).
4. An ion separation unit for desalinating sea water according to claim 1, wherein: the right end of the mounting plate (2) is fixedly provided with an anode side rheostat (15).
5. An ion separation unit for desalinating sea water according to claim 4, wherein: the cathode plate (11) and the anode plate (13) are respectively positioned at the left side and the right side of the ion exchange membrane stack (18).
6. An ion separation unit for desalinating sea water according to claim 1, wherein: the water inlet (5) and the cleaning inlet (10) are alternately arranged at the outer end of the water plate (1).
7. An ion separation unit for desalinating sea water according to claim 1, wherein: the water flow controller (7) is fixedly arranged at the upper end of the mounting frame (8), and the water flow controller (7) is arranged at the front side of the pickling input pump (4).
8. An ion separation unit for desalinating sea water according to claim 1, wherein: the left end of the water flow controller (7) is fixedly provided with a raw water inlet pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311306155.3A CN117023733A (en) | 2023-10-10 | 2023-10-10 | Ion separation device for sea water desalination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311306155.3A CN117023733A (en) | 2023-10-10 | 2023-10-10 | Ion separation device for sea water desalination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117023733A true CN117023733A (en) | 2023-11-10 |
Family
ID=88634082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311306155.3A Pending CN117023733A (en) | 2023-10-10 | 2023-10-10 | Ion separation device for sea water desalination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117023733A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238546B1 (en) * | 1996-10-23 | 2001-05-29 | Louis H. Knieper | Electrochemical treatment of effluent water |
| CN104229955A (en) * | 2014-09-18 | 2014-12-24 | 中国地质大学 | ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects |
| CN109954405A (en) * | 2019-03-15 | 2019-07-02 | 苏州聚智同创环保科技有限公司 | A kind of filter press-type ion-exchange membrane electrodialysis device |
| CN111960513A (en) * | 2020-08-28 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Electrodialysis reactor for preventing cathode plate from scaling and wastewater treatment method |
| CN212595031U (en) * | 2020-05-28 | 2021-02-26 | 佛山市顺德区美的饮水机制造有限公司 | Electrodialysis membrane arrangement structure and electrodialysis device |
-
2023
- 2023-10-10 CN CN202311306155.3A patent/CN117023733A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238546B1 (en) * | 1996-10-23 | 2001-05-29 | Louis H. Knieper | Electrochemical treatment of effluent water |
| CN104229955A (en) * | 2014-09-18 | 2014-12-24 | 中国地质大学 | ED (electrodialysis) water treatment system with intelligent temperature-adjusting, voltage-adjusting and ultrasonic effects |
| CN109954405A (en) * | 2019-03-15 | 2019-07-02 | 苏州聚智同创环保科技有限公司 | A kind of filter press-type ion-exchange membrane electrodialysis device |
| CN212595031U (en) * | 2020-05-28 | 2021-02-26 | 佛山市顺德区美的饮水机制造有限公司 | Electrodialysis membrane arrangement structure and electrodialysis device |
| CN111960513A (en) * | 2020-08-28 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Electrodialysis reactor for preventing cathode plate from scaling and wastewater treatment method |
Non-Patent Citations (2)
| Title |
|---|
| 张振家等: "《工厂废水处理站工艺原理与维护管理》", 28 February 2003, 化学工业出版社, pages: 186 * |
| 马玉新等: "《给水处理理论与工艺》", 30 June 2022, 哈尔滨工业大学出版社, pages: 429 * |
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