CN215233338U - Electrodialysis removes saline and alkaline device - Google Patents
Electrodialysis removes saline and alkaline device Download PDFInfo
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- CN215233338U CN215233338U CN202121500617.1U CN202121500617U CN215233338U CN 215233338 U CN215233338 U CN 215233338U CN 202121500617 U CN202121500617 U CN 202121500617U CN 215233338 U CN215233338 U CN 215233338U
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- pipe
- electrodialysis
- exchange membrane
- box body
- anion exchange
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- 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 utility model belongs to the field of sewage treatment, in particular to an electrodialysis desalination alkali removal device, which comprises an electrodialysis box body, wherein both ends of the electrodialysis box body are respectively provided with a positive plate and a negative plate, a plurality of cation exchange membranes and anion exchange membranes with V-shaped structures are sequentially and alternately and detachably arranged between the positive plate and the negative plate in the electrodialysis box body, flow guide ports are reserved on each cation exchange membrane and each anion exchange membrane, a desalination chamber and a concentration chamber which are alternately distributed are formed between the adjacent cation exchange membranes and the adjacent anion exchange membranes, and both ends of the electrodialysis box body are respectively provided with a water inlet pipe and a water outlet pipe; each desalting chamber is respectively connected to a desalted liquid delivery pipe through a branch conduit, the tail end of the desalted liquid delivery pipe is connected with a desalted liquid discharge pipe and a return pipe in a branch manner, and the return pipe is communicated with a water inlet pipe; each concentration chamber is connected to a concentrated solution discharge pipe through a branch guide pipe, a water outlet pipe is connected with a water discharge pipe and a circulating pipe in a branch mode, and the circulating pipe is communicated with a water inlet pipe.
Description
Technical Field
The utility model relates to a sewage treatment field specifically is a saline and alkaline device is removed to electrodialysis.
Background
When dialysis is performed under the action of an electric field, the phenomenon in which charged solute particles (e.g., ions) in a solution migrate through a membrane is called electrodialysis. A technique for purifying and separating substances by electrodialysis is called an electrodialysis method, and under the drive of an external direct current electric field, anions and cations move to an anode and a cathode respectively by the selective permeability of an ion exchange membrane (namely, cations can permeate a cation exchange membrane, and anions can permeate an anion exchange membrane). In the ion migration process, if the fixed charge of the membrane is opposite to the charge of the ions, the ions can pass through; if the charges of the two are the same, the ions are repelled, so that the purposes of solution desalination, concentration, refining or purification and the like are achieved. The method is widely applied to chemical industry, light industry, metallurgy, paper making and pharmaceutical industry, and especially has the most important significance in preparing pure water and treating three wastes in environmental protection, such as acid and alkali recovery, electroplating waste liquid treatment, useful substance recovery from industrial waste water and the like.
The prior electrodialysis desalination alkali device has short liquid flow stroke and unsatisfactory ion separation effect; and the ion exchange membrane is inconvenient to disassemble and assemble and is difficult to clean the sediment on the surface.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a saline and alkaline device is removed in electrodialysis to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an electrodialysis desalination alkali removal device comprises an electrodialysis box body, wherein positive plates and negative plates are respectively arranged at two ends of the electrodialysis box body, a plurality of cation exchange membranes and anion exchange membranes of V-shaped structures are sequentially and alternately and detachably mounted between the positive plates and the negative plates in the electrodialysis box body, flow guide openings are reserved on the cation exchange membranes and the anion exchange membranes, desalting chambers and concentrating chambers which are alternately distributed are formed between the adjacent cation exchange membranes and the adjacent anion exchange membranes, and water inlet pipes and water outlet pipes are respectively arranged at two ends of the electrodialysis box body; each desalting chamber is respectively connected to a desalted liquid delivery pipe through a branch conduit, the tail end of the desalted liquid delivery pipe is connected with a desalted liquid discharge pipe and a return pipe in a branch manner, and the return pipe is communicated with a water inlet pipe; each concentration chamber is connected to a concentrated solution discharge pipe through a branch guide pipe, a water outlet pipe is connected with a water discharge pipe and a circulating pipe in a branch mode, and the circulating pipe is communicated with a water inlet pipe.
Preferably, the cation exchange membrane and the anion exchange membrane distributed at two ends of the electrodialysis box body are opposite in opening.
Preferably, the diversion ports on the adjacent cation exchange membrane and anion exchange membrane are alternately arranged up and down.
Preferably, the supporting frame is packaged outside the cation exchange membrane and the anion exchange membrane, the positioning plates are mounted at the upper end and the lower end of the cation exchange membrane and the upper end and the lower end of the anion exchange membrane, and caulking grooves for embedding the positioning plates are correspondingly formed in the inner walls of the upper side and the lower side of the electrodialysis box body.
Preferably, a sealing box door is installed on the side surface of the electrodialysis box body.
Preferably, a valve is respectively arranged on the desalination liquid discharge pipe, the return pipe, the drain pipe and the circulation pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up the ion exchange membrane of "V" type structure in the electrodialysis box, increased the area of contact with liquid on the one hand, improved the ion adsorption effect, on the other hand inlays the dress in the caulking groove of electrodialysis box inner wall through the locating plate at its both ends, and easy dismounting utilizes its "V" type structure, has certain outside expansion performance, can make its both ends top tight, and stability is good.
2. The ion exchange membrane is provided with the guide openings which are alternately distributed up and down, so that liquid forms a curved path in the process of flowing from the water inlet pipe to the water outlet pipe, the circulation stroke is prolonged, and the ion separation effect is improved; meanwhile, the desalinated liquid delivery pipe is communicated with the water inlet pipe through the return pipe, so that the desalinated liquid can be conveniently separated for multiple times; the water outlet pipe is communicated with the water inlet pipe through a circulating pipe, so that the circulating treatment of the feed liquid is conveniently formed; the flexibility is strong, can select the processing procedure of feed liquid according to the opening and closing of control valve, easy operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the specific structure of the anion exchange membrane of the present invention.
In the figure: 1. an electrodialysis box body; 2. a positive plate; 3. a negative plate; 4. a cation exchange membrane; 5. an anion exchange membrane; 6. a flow guide port; 7. positioning a plate; 8. caulking grooves; 9. a desalting chamber; 10. a concentration chamber; 11. a water inlet pipe; 12. a water outlet pipe; 13. a branch conduit; 14. a desalted liquid delivery pipe; 15. a desalted liquid discharge pipe; 16. a return pipe; 17. a concentrated solution discharge pipe; 18. a drain pipe; 19. a circulation pipe; 20. and (4) a valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-2, the present invention provides a technical solution: an electrodialysis desalination alkali device comprises an electrodialysis box body 1, wherein positive plates 2 and negative plates 3 are respectively arranged at two ends of the electrodialysis box body 1, a plurality of V-shaped cation exchange membranes 4 and anion exchange membranes 5 are sequentially and alternately and detachably mounted between the positive plates 2 and the negative plates 3 in the electrodialysis box body 1, flow guide openings 6 are reserved on the cation exchange membranes 4 and the anion exchange membranes 5, desalination chambers 9 and concentration chambers 10 which are alternately distributed are formed between the adjacent cation exchange membranes 4 and the anion exchange membranes 5, and water inlet pipes 11 and water outlet pipes 12 are respectively arranged at two ends of the electrodialysis box body 1; each desalting chamber 9 is respectively connected to a desalting liquid delivery pipe 14 through a branch conduit 13, the tail end of the desalting liquid delivery pipe 14 is branched and connected with a desalting liquid discharge pipe 15 and a return pipe 16, and the return pipe 16 is communicated with the water inlet pipe 11; each concentrating chamber 10 is connected to a concentrated solution discharge pipe 17 through a branch guide pipe 13, a water outlet pipe 12 is connected with a water discharge pipe 18 and a circulating pipe 19 in a branch mode, and the circulating pipe 19 is communicated with a water inlet pipe 11.
Furthermore, the openings of the cation exchange membrane 4 and the anion exchange membrane 5 distributed at the two ends of the electrodialysis box body 1 are opposite.
Furthermore, the diversion ports 6 on the adjacent cation exchange membrane 4 and anion exchange membrane 5 are alternately arranged up and down.
Furthermore, the outside encapsulation of cation exchange membrane 4 and anion exchange membrane 5 has the support frame, and locating plate 7 is all installed at both ends about cation exchange membrane 4 and anion exchange membrane 5, corresponds on the both sides inner wall about the electrodialysis box 1 and sets up the caulking groove 8 that supplies locating plate 7 embedding.
Furthermore, a sealing box door is arranged on the side surface of the electrodialysis box body 1.
Furthermore, a valve 20 is respectively arranged on the desalination liquid discharge pipe 15, the return pipe 16, the drain pipe 18 and the circulating pipe 19.
The working principle is as follows: electrifying the positive plate 2 and the negative plate 3, introducing a feed liquid to be treated into the electrodialysis box body 1 through the water inlet pipe 11, wherein the feed liquid flows to the direction of the water outlet pipe 12 along the flow guide ports 6 on the cation exchange membrane 4 and the anion exchange membrane 5, the flow guide ports 6 on the adjacent cation exchange membrane 4 and the anion exchange membrane 5 are alternately arranged up and down, a curved path is formed in the flow process of the feed liquid, the flow stroke is prolonged, and the ion separation effect is improved; the cation exchange membrane 4 and the anion exchange membrane 5 are in V-shaped structures, so that the contact area with liquid is increased, and the ion adsorption effect is improved.
The desalted liquid in the desalting chamber 9 is discharged into a desalted liquid delivery pipe 14 through a branch conduit 13, the tail end branch of the desalted liquid delivery pipe 14 is connected with a desalted liquid discharge pipe 15 and a return pipe 16, the flow direction of the desalted liquid can be controlled by controlling the opening and closing of a valve 20 on the desalted liquid discharge pipe 15 and the return pipe 16, and the valve 20 on the desalted liquid discharge pipe 15 is opened to discharge and recover the desalted liquid; the valve 20 on the return pipe 16 is opened to introduce the desalinated liquid into the water inlet pipe 11 for multiple times of separation.
The concentrated solution in the concentrating chamber 10 flows into the concentrated solution discharge pipe 17 through the branch conduit 13, and is discharged and recovered through the concentrated solution discharge pipe 17.
The water outlet pipe 12 is connected with a water outlet pipe 18 and a circulating pipe 19 in a branching manner, the flow direction of the desalted liquid can be controlled by controlling the opening and closing of a valve 20 on the water outlet pipe 18 and the circulating pipe 19, and the valve on the water outlet pipe 18 is opened to discharge the liquid in the electrodialysis box body 1 integrally; a valve 20 on the circulating pipe 19 is opened to form the circulation flow of the feed liquid, and the feed liquid is circularly treated; the flexibility is strong, the operation is simple, and the controllability is good.
It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The electrodialysis desalination alkali device comprises an electrodialysis box body (1) and is characterized in that positive plates (2) and negative plates (3) are arranged at two ends of the electrodialysis box body (1) respectively, a plurality of cation exchange membranes (4) and anion exchange membranes (5) of V-shaped structures are sequentially and alternately and detachably mounted between the positive plates (2) and the negative plates (3) in the electrodialysis box body (1), flow guide openings (6) are reserved on the cation exchange membranes (4) and the anion exchange membranes (5), desalting chambers (9) and concentrating chambers (10) which are alternately distributed are formed between the adjacent cation exchange membranes (4) and the adjacent anion exchange membranes (5), and water inlet pipes (11) and water outlet pipes (12) are arranged at two ends of the electrodialysis box body (1) respectively; each desalting chamber (9) is respectively connected to a desalting liquid delivery pipe (14) through a branch conduit (13), the tail end of the desalting liquid delivery pipe (14) is branched and connected with a desalting liquid discharge pipe (15) and a return pipe (16), and the return pipe (16) is communicated with the water inlet pipe (11); each concentration chamber (10) is respectively connected to a concentrated solution discharge pipe (17) through a branch guide pipe (13), a water outlet pipe (12) is connected with a water discharge pipe (18) and a circulating pipe (19) in a branching mode, and the circulating pipe (19) is communicated with a water inlet pipe (11).
2. An electrodialysis desalination alkali device as claimed in claim 1, wherein: the openings of the cation exchange membrane (4) and the anion exchange membrane (5) distributed at the two ends of the electrodialysis box body (1) are opposite.
3. An electrodialysis desalination alkali device as claimed in claim 1, wherein: the flow guide openings (6) on the adjacent cation exchange membrane (4) and anion exchange membrane (5) are alternately arranged up and down.
4. An electrodialysis desalination alkali device as claimed in claim 1, wherein: cation exchange membrane (4) and anion exchange membrane (5) outside encapsulation have a support frame, and locating plate (7) are all installed at both ends about cation exchange membrane (4) and anion exchange membrane (5), correspond on the both sides inner wall about electrodialysis box (1) and set up caulking groove (8) that supply locating plate (7) embedding.
5. An electrodialysis desalination alkali device as claimed in claim 1, wherein: and a sealing box door is arranged on the side surface of the electrodialysis box body (1).
6. An electrodialysis desalination alkali device as claimed in claim 1, wherein: and a valve (20) is respectively arranged on the desalted liquid discharge pipe (15), the return pipe (16), the drain pipe (18) and the circulating pipe (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121500617.1U CN215233338U (en) | 2021-07-02 | 2021-07-02 | Electrodialysis removes saline and alkaline device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121500617.1U CN215233338U (en) | 2021-07-02 | 2021-07-02 | Electrodialysis removes saline and alkaline device |
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| Publication Number | Publication Date |
|---|---|
| CN215233338U true CN215233338U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121500617.1U Active CN215233338U (en) | 2021-07-02 | 2021-07-02 | Electrodialysis removes saline and alkaline device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114772879A (en) * | 2022-04-11 | 2022-07-22 | 同济大学 | Device and method for conditioning sludge by using ion exchange resin |
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2021
- 2021-07-02 CN CN202121500617.1U patent/CN215233338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114772879A (en) * | 2022-04-11 | 2022-07-22 | 同济大学 | Device and method for conditioning sludge by using ion exchange resin |
| CN114772879B (en) * | 2022-04-11 | 2024-04-23 | 同济大学 | Device and method for conditioning sludge by utilizing ion exchange resin |
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