CN115124117A - Electrodialysis device for wastewater treatment - Google Patents
Electrodialysis device for wastewater treatment Download PDFInfo
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- CN115124117A CN115124117A CN202211044148.6A CN202211044148A CN115124117A CN 115124117 A CN115124117 A CN 115124117A CN 202211044148 A CN202211044148 A CN 202211044148A CN 115124117 A CN115124117 A CN 115124117A
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- 238000000909 electrodialysis Methods 0.000 title claims abstract description 38
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 117
- 150000001450 anions Chemical class 0.000 claims abstract description 69
- 150000001768 cations Chemical class 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 34
- 238000007790 scraping Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 210000000225 synapse Anatomy 0.000 claims description 6
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 125000002091 cationic group Chemical group 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000009972 noncorrosive effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 8
- 235000013547 stew Nutrition 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- 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
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses an electrodialysis device for wastewater treatment, which comprises: the standing box is communicated with a water inlet pipe and a water outlet pipe; the power, the positive negative pole of power passes the both sides of the case that stews respectively to be connected with the current conducting plate, current conducting plate fixed connection on the inside wall of the case that stews, two current conducting plates correspond respectively and have anion membrane and cation membrane, and anion membrane and cation membrane all are located the incasement that stews. Due to the fact that the arrangement of the scraping pieces is adopted, the scraping pieces can be attached to the anion membrane and the cation membrane, and the scraping pieces can be moved to scrape and take solid suspended matters attached to the anion membrane and the cation membrane, the problem that in the prior art, waste water is treated by an electrodialysis process, corresponding equipment needs to be disassembled periodically, the anion membrane and the cation membrane are cleaned, and therefore the waste water cannot be treated continuously by the corresponding equipment is solved, and therefore the electrodialysis equipment does not need to stop working to disassemble the anion membrane and the cation membrane, and waste water can be treated continuously.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an electrodialysis device for wastewater treatment.
Background
The waste water is water source which is discharged by people in the production or living process, is not used, can not be directly discharged and can not be recycled.
People can carry out corresponding treatment on the wastewater so as to meet the discharge standard and then discharge the wastewater, wherein one of the corresponding treatments relates to the treatment of separating anions and cations in the wastewater from the wastewater by utilizing an electrodialysis technology so as to reduce the concentration of certain heavy metal ions or other ions in the wastewater so as to reach the discharge standard.
However, in the process of implementing the technical solution in the embodiment of the present application, the inventor of the present application finds that the above technology has at least the following technical problems:
the electrodialysis technology is adopted, anion and cation membranes are involved, anion is allowed to pass through the anion membrane, cation is allowed to pass through the cation membrane, when the anion and cation membranes are contacted with wastewater for a long time, small-particle solid suspended matters are attached to the surface of one side of the anion and cation membranes, when the solid suspended matters are gradually accumulated on the anion and cation membranes, the anion and cation membranes can be prevented from passing through the cation and anion membranes, the efficiency of wastewater treatment is gradually reduced, people can periodically take out the anion and cation membranes and structures directly connected with the anion and cation membranes when the electrodialysis wastewater is treated by utilizing the electrodialysis, the structures are installed after the anion and cation membranes are cleaned, the operating efficiency of corresponding electrodialysis equipment is obviously reduced when the anion and cation membranes are cleaned, and further the efficiency of wastewater treatment is not high.
Disclosure of Invention
The embodiment of the application solves the problem that the waste water cannot be continuously treated by corresponding equipment due to the fact that the corresponding equipment needs to be periodically disassembled and anion and cation membranes are cleaned when the waste water is treated by an electrodialysis process in the prior art, realizes that the electrodialysis equipment does not need to stop working to disassemble the anion and cation membranes, and can continuously treat the waste water.
The embodiment of the application provides an electrodialysis device for waste water treatment, includes: the standing box is communicated with a water inlet pipe and a water outlet pipe; the positive electrode and the negative electrode of the power supply respectively penetrate through two sides of the standing box and are connected with conducting plates, the conducting plates are fixedly connected to the inner side wall of the standing box, the two conducting plates respectively correspond to an anion membrane and a cation membrane, and the anion membrane and the cation membrane are both positioned in the standing box; the two doctor blades can be respectively attached to the anion membrane and the cation membrane; the driving assembly is used for enabling the two scraping blades to respectively slide on the anion membrane and the cation membrane; and the wastewater enters the standing box through the water inlet pipe or is discharged out of the standing box through the water outlet pipe.
Preferably, the standing box is composed of a first block and a second block, rectangular grooves are formed in the first block and the second block, the water inlet pipe is communicated with the rectangular groove in the first block, the water outlet pipe is communicated with the rectangular groove in the second block, and the two conducting plates are fixedly connected with the rectangular groove in the first block and the rectangular groove in the second block respectively.
Preferably, the positive electrode and the negative electrode of the power supply are both connected with wires, one of the wires is provided with a switch, and the two wires respectively penetrate through the side walls of the first block and the second block and are respectively connected with the two conductive plates.
Preferably, two connecting plates are fixedly connected in each of the rectangular grooves in the first block and the rectangular grooves in the second block, the anion membrane and the cation membrane are fixedly connected with the two corresponding connecting plates, and the thickness of any one connecting plate is the same as that of the anion membrane or the cation membrane.
Preferably, the doctor-bar has a round platform body, fixedly connected with a plurality of circumference equidistance the arc that distributes on the round platform body, be provided with the unsteady flow piece on the arc.
Preferably, the driving assembly comprises four parallel sliding chutes arranged on the first block and the second block, the sliding chutes are connected with sliding plates in a sliding manner, the four sliding plates are fixedly connected through transverse plates, two of the sliding plates are fixedly connected with the scraping blades respectively, and the other two sliding plates are fixedly connected with the supporting plates.
Preferably, the driving assembly further comprises two baffle plates fixedly connected with the sliding plate, the first block and the second block are fixedly connected with fixing blocks, each fixing block is provided with a reset groove, the reset grooves are connected with reset blocks through elastic pieces, and the reset blocks are fixedly connected with the corresponding baffle plates.
Preferably, the tip of the less diameter of round platform body rotates and is connected with the cask, the uncovered setting of cask, this uncovered orientation the tip of the less diameter of round platform body, cask inner wall fixed mounting has direct current motor, direct current motor's output shaft fixed connection be in the center department of the less diameter of round platform body tip, the outer wall and the corresponding slide fixed connection of cask, slide, diaphragm all adopt can electrically conduct and difficult corrosive material.
Preferably, the standing box is internally and fixedly connected with a frame, the frame is provided with two layers of filter screens, the two layers of filter screens are not in contact with each other, and activated carbon is arranged between the two layers of filter screens.
Preferably, two of the conductive plates have a slot, the conductive plates are fixedly connected with an isolation block, the length of the isolation block is smaller than that of the conductive plates, the isolation block is fixedly connected with a resistance plate, the resistance plate has a predetermined resistance value, the resistance plate has a synapse, and the synapse is in contact with the conductive plates.
Compared with the prior art, one or more technical schemes provided in the embodiment of the application have at least the following technical effects or advantages:
1. due to the fact that the arrangement of the scraping pieces is adopted, the scraping pieces can be attached to the anion membrane and the cation membrane, and the scraping pieces can be moved to scrape and take solid suspended matters attached to the anion membrane and the cation membrane, the problem that in the prior art, waste water is treated by an electrodialysis process, corresponding equipment needs to be disassembled periodically, the anion membrane and the cation membrane are cleaned, and therefore the waste water cannot be treated continuously by the corresponding equipment is solved, and therefore the electrodialysis equipment does not need to stop working to disassemble the anion membrane and the cation membrane, and waste water can be treated continuously.
2. Owing to adopted direct current motor, when removing the doctor-bar, can drive the synchronous syntropy of direct current motor and remove, remove in-process and power electric connection, it scrapes and gets the anion to drive the doctor-bar rotation type, adnexed suspended solid on the cation membrane, and drive power through direct current motor, produce a flow direction to active carbon part, make the suspended solid after being scraped and get flow to the active carbon direction, and finally adsorbed by the active carbon, can reduce the content of suspended solid in the waste water, the suspended solid after also reducing simultaneously and being scraped and get off is attached to the anion once more, the probability on the cation membrane, clean effect is more effective.
3. The structure that the variable resistance value is arranged on the two conductive plates is adopted, so that the rotating speeds of the direct current motor at different positions are controlled, the direct current motor moves from the connecting plate to the ionic membrane at the beginning, the rotating speed is relatively slow, then the rotating speeds are gradually increased, the resisting plate is prevented from not completely resisting the ionic membrane, the ionic membrane is enabled to shake due to the fact that the scraper rotates at a high speed to generate water flow, and the ionic membrane is easy to fall off.
Drawings
Fig. 1 is a schematic structural diagram of an electrodialysis device for wastewater treatment provided in an embodiment of the present application;
FIG. 2 is a schematic view of the structure of FIG. 1 taken along line A-A;
FIG. 3 is a schematic structural diagram of a first block and a second block in an electrodialysis device for wastewater treatment provided by an embodiment of the present application;
fig. 4 is a schematic structural diagram of a first block and the interior of the first block in an electrodialysis device for wastewater treatment according to an embodiment of the present application;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic view of a connection structure between one of the sliding plates and one of the resisting plates in an electrodialysis device for wastewater treatment according to an embodiment of the present application;
fig. 7 is a schematic view of a connection structure between one of sliding plates and a fixed block in an electrodialysis device for wastewater treatment according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a first block, a scraping blade, a driving scraping blade structure and a frame in an electrodialysis device for wastewater treatment provided by the second embodiment of the application;
fig. 9 is a schematic cross-sectional structure view of a drum in an electrodialysis device for wastewater treatment according to the second embodiment of the present application.
FIG. 10 is a schematic diagram of the structure of one of the conductive plates and the spacer and the resistance plate on the conductive plate in an electrodialysis device for wastewater treatment provided by the third embodiment of the present application
In the figure:
10. standing in a box; 11. a water inlet pipe; 12. a water outlet pipe; 13. a first block; 14. a second block; 15. a rectangular groove;
20. a power source; 21. a conductive plate; 22. an anionic membrane; 23. a cationic membrane; 24. a wire; 25. a connecting plate; 26. an isolation block; 27. a resistance plate;
30. scraping a blade; 31. a circular truncated cone; 32. an arc-shaped plate; 33. a variable flow block;
40. a drive assembly; 41. a chute; 42. a slide plate; 43. a transverse plate; 44. a baffle plate; 45. a fixed block; 46. a reset groove; 47. an elastic member; 48. a reset block; 49. a barrel; 410. a direct current motor; 411. a frame; 412. and a support plate.
Detailed Description
The embodiment of the application realizes that the electrodialysis equipment does not need to stop working to disassemble the anion and cation membranes by providing the electrodialysis device for wastewater treatment, and can clean the surface of one side of the anion and cation membranes, thereby solving the problem that the corresponding equipment cannot continuously treat wastewater because the corresponding equipment needs to be periodically disassembled and the anion and cation membranes are cleaned when wastewater is treated by an electrodialysis process in the prior art.
In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:
set up slidable structure on corresponding equipment, set up two doctor-bars simultaneously in this equipment inside, two doctor-bars can laminate anion, cation membrane, and under slidable structure drives, the doctor-bar is scraped and is got to one side surface of anion, cation membrane, lets adnexed solid suspended solid break away from the surface of anion, cation membrane one side, and when the doctor-bar was scraped and is got, the power of this equipment still was in the on-state, does not stop the processing work to waste water.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
The first embodiment is as follows:
referring to fig. 1-7, an electrodialysis device for wastewater treatment includes:
the standing box 10 is communicated with a water inlet pipe 11 and a water outlet pipe 12; specifically, the standing box 10 has a cavity therein, the water inlet pipe 11 and the water outlet pipe 12 are both communicated with the cavity, and meanwhile, the water inlet pipe 11 and the water outlet pipe 12 are both provided with corresponding valves, and the valves can control the water inlet pipe 11 and the water outlet pipe 12.
The power supply 20, the positive pole and the negative pole of the power supply 20 respectively penetrate through two sides of the standing box 10 and are connected with the conductive plates 21, the conductive plates 21 are fixedly connected on the inner side wall of the standing box 10, the two conductive plates 21 respectively correspond to the anion membrane 22 and the cation membrane 23, and the anion membrane 22 and the cation membrane 23 are both positioned in the standing box 10; specifically, the power supply 20 is a conventional power supply, and in order to provide sufficient electric energy, its positive and negative poles are respectively electrically connected to two conductive plates 21, so that the two conductive plates 21 respectively present positive and negative poles, but the conductive plate 21 presenting the positive pole corresponds to the anionic membrane 22, and the conductive plate 21 presenting the negative pole corresponds to the cationic membrane 23, that is: anions in the treated waste liquid pass through the anion membrane 22 by the attraction of the positive conductive plate 21, and cations in the waste liquid pass through the cation membrane 23 by the attraction of the negative conductive plate 21.
Two doctor blades 30, two doctor blades 30 can be respectively attached to the anion membrane 22 and the cation membrane 23; a driving assembly 40, through which the two blades 30 slide on the anion membrane 22 and the cation membrane 23, respectively; specifically, one side of the wiper 30 is located on the same horizontal plane as the side of the ionic membrane corresponding to the wiper 30.
The wastewater, which enters the standing box 10 through a water inlet pipe 11 or is discharged out of the standing box 10 through a water outlet pipe 12; specifically, the valve on the water inlet pipe 11 is opened, the valve on the water outlet pipe 12 is closed, so that the wastewater enters the standing box 10, the valve on the water inlet pipe 11 is closed, and the valve on the water outlet pipe 12 is opened, so that the wastewater is discharged out of the standing box 10.
Further, the standing box 10 is composed of a first block 13 and a second block 14, rectangular grooves 15 are formed in the first block 13 and the second block 14, the water inlet pipe 11 is communicated with the rectangular grooves 15 in the first block 13, the water outlet pipe 12 is communicated with the rectangular grooves 15 in the second block 14, and the two conductive plates 21 are fixedly connected with the rectangular grooves 15 in the first block 13 and the rectangular grooves 15 in the second block 14 respectively.
Referring to fig. 2 and 3, in particular, the first block 13 and the second block 14 are merged together so that the two rectangular grooves 15 are merged in communication, forming a cavity as described above.
Furthermore, the positive and negative poles of the power source 20 are connected to leads 24, one of the leads 24 has a switch, and the two leads 24 respectively penetrate through the sidewalls of the first block 13 and the second block 14 and are respectively connected to the two conductive plates 21.
When the switch is closed, the two conductive plates 21 can respectively present a positive pole and a negative pole, and when the switch is opened, the positive pole and the negative pole on the two conductive plates 21 disappear and do not present.
Further, two connecting plates 25 are fixedly connected to each of the rectangular groove 15 in the first block 13 and the rectangular groove 15 in the second block 14, the anion membrane 22 and the cation membrane 23 are fixedly connected to the corresponding two connecting plates 25, and the thickness of any one connecting plate 25 is the same as that of the anion membrane 22 or the cation membrane 23.
Referring to fig. 3, specifically, the two portions of the two connection plates 25 and the anion membrane 22 and the two connection plates 25 and the cation membrane 23 divide the entire cavity into three regions, which are set as a middle region and two side regions, the waste water is located in the middle region, and the anions and cations in the waste water are attracted by the conductive plates 21 on both sides and enter the two side regions.
Furthermore, the scraping blade 30 has a circular truncated cone 31, a plurality of arc plates 32 distributed at equal intervals on the circumference are fixedly connected to the circular truncated cone 31, and the arc plates 32 are provided with variable flow blocks 33.
Referring to fig. 5, the larger diameter end of the truncated cone 31 faces the anion membrane 22, each arc-shaped plate 32 has a convex side and a concave side, the deflector 33 acts like a fan blade to blow the wind to one side, and the deflector 33 drives the water in the wastewater to flow to the center of the middle area when rotating around the center of the truncated cone 31.
Further, the driving assembly 40 includes four sliding grooves 41 arranged in parallel on the first block 13 and the second block 14, the sliding grooves 41 are slidably connected with sliding plates 42, the four sliding plates 42 are all connected and fixed by a transverse plate 43, two of the sliding plates 42 are respectively fixedly connected with the two scraping blades 30, and the other two sliding plates 42 are all fixedly connected with a resisting plate 412.
The purpose of the abutting plate 412 is to provide a supporting function when the scraping blade 30 scrapes the solid suspension attached to one side of the anion membrane 22 and the cation membrane 23, and prevent the anion membrane 22 and the cation membrane 23 from being deformed by force on one side so that part of the solid suspension on the ion membrane is not scraped by the scraping blade 30.
Further, the driving assembly 40 further includes two blocking plates 44 fixedly connected to the sliding plate 42, fixing blocks 45 are fixedly connected to the first block 13 and the second block 14, the fixing blocks 45 have a reset groove 46, the reset groove 46 is connected to a reset block 48 through an elastic member 47, and the reset block 48 is fixedly connected to the corresponding blocking plate 44.
Referring to fig. 7, the elastic member 47 is preferably a spring member, when the blocking plate 44 is pushed, the blocking plate 44 will drive the restoring block 48 to move synchronously and in the same direction as the blocking plate 44 and press the spring member, but the blocking plates 44 will always cover the chutes 41, so as to prevent the waste water from splashing out of the chutes 41 when the wiper 30 is being scraped.
The working principle of the first embodiment of the application is as follows:
referring to fig. 1, in an initial state, the switch is closed, so that the two conductive plates 21 respectively present positive and negative electrodes, and the anions and cations in the wastewater are attracted to move towards two side regions through the anion membrane 22 and the cation membrane 23, respectively, after a period of time, the side of the anion membrane 22 and the side of the cation membrane 23, which is in contact with the wastewater, are attached with the solid suspended matter, any one of the baffles 44 is pushed, each sliding plate 42 is driven to synchronously move in the same direction, the two scraping blades 30 are driven to begin to scrape the solid suspended matter on the anion membrane 22 and the cation membrane 23, and the scraped anion membrane 22 and the cation membrane 23 are separated from the solid suspended matter attached thereon.
Example two:
the difference from the first embodiment lies in that an electric drive mode for scraping solid suspended substances is added, specifically:
referring to fig. 8 and 9, the end of the circular truncated cone 31 with the smaller diameter is rotatably connected with a round barrel 49, the round barrel 49 is open and arranged, the opening faces the end of the circular truncated cone 31 with the smaller diameter, a direct current motor 410 is fixedly mounted on the inner wall of the round barrel 49, the direct current motor 410 is the prior art, details are not repeated herein, the output shaft of the direct current motor 410 is fixedly connected to the center of the end of the circular truncated cone 31 with the smaller diameter, the outer wall of the round barrel 49 is fixedly connected with a corresponding sliding plate 42, and the round barrel 49, the sliding plate 42 and the transverse plate 43 are made of conductive and corrosion-resistant materials.
The input end and the output end of the dc motor 410 are both in contact with the inner wall of the round barrel 49, and the round barrel 49, the sliding plate 42 and the transverse plate 43 are all made of conductive and corrosion-resistant materials, so as to communicate the power of the power supply 20 into the dc motor 410.
Further, still fixedly connected with a frame 411 in the case 10 that stews, be provided with two-layer filter screen on the frame 411, and two-layer filter screen contactless each other is provided with the active carbon between the two-layer filter screen.
When any one baffle 44 is pushed, each sliding plate 42 is driven to synchronously move in the same direction, wherein the two sliding plates 42 can contact with the two conductive plates 21, the direct current motor 410 is driven by the motor to drive the scraping blades 30 to rotate, the solid suspended matters after being scraped are pushed to the frame 411 by the two rotating scraping blades 30 and are adsorbed by activated carbon in the frame 411, the content of the solid suspended matters in the wastewater is reduced, namely the solid suspended matters are reduced to be attached to one side of the anion membrane 22 and one side of the cation membrane 23, the time difference of two adjacent times of cleaning of the anion membrane 22 and the cation membrane 23 is increased, frequent cleaning can be avoided, and labor force is saved.
Example three:
the difference from the second embodiment lies in that a function of changing the resistance value is added to one of the conductive plates, specifically:
referring to fig. 10, two conductive plates 21 have slots, an isolation block 26 is fixedly connected to the conductive plates 21, the length of the isolation block 26 is smaller than that of the conductive plates 21, a resistance plate 27 is fixedly connected to the isolation block 26, the resistance plate 27 has a predetermined resistance value, the resistance plate 27 has a synapse, and the synapse contacts the conductive plates 21.
The isolation block 26 is made of non-conductive material, and the resistance plate 27 is equivalent to a plate-shaped resistance device;
the conductive plate 21 is slotted so that its height is reduced, i.e.: the height of this current-conducting plate 21 is less than the minimum of slide 42 for slide 42 can't direct and current-conducting plate 21 contact in the removal process, but can be through the resistance board 27 contact with current-conducting plate 21 contact, realizes dc motor 410's circular telegram, and then slide 42 is when resistance board 27 contact and progressively slide, then dc motor 410 circulating electric current is stronger and stronger, makes dc motor 410 progressively become high rotational speed by the low rotational speed of beginning, and the benefit of so setting is: at first, the direct current motor 410 drives the corresponding doctor blade 30 to rotate at a low speed, so as to prevent the anion membrane 22 and the cation membrane 23 connected with the connecting plate 25 from shaking due to the high-speed rotation of the doctor blade 30, the anion membrane 22 and the cation membrane 23 are easy to separate from the connecting plate 25 if shaking is frequently suffered, and after the plate 412 to be resisted completely against the anion membrane 22 or the cation membrane 23, the shaking of the anion membrane 22 or the cation membrane 23 caused by water flow is also reduced, so that the rotating speed of the doctor blade 30 can be relatively increased.
Also of note for this application are: the inside of the standing box 10 is divided into three independent areas, the middle area is waste water, the two side areas are solutions for containing anions and cations respectively, but the solution has ions entering, but the fact that the conductivity of the solution is not changed, because the positive pole attracts the anions, the negative pole attracts the cations, the anions are tightly adsorbed by the conductive plate 21 which is the positive pole, and the cations are tightly adsorbed by the conductive plate 21 which is the negative pole, even if the sliding plate 42 is always in contact with the solution, the power supply is difficult to pass through the solution, and the direct current motor 410 can be electrified only when the sliding plate 42 is in contact with the two conductive plates 21.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An electrodialysis unit for wastewater treatment, comprising: the device comprises a standing box (10), wherein the standing box (10) is communicated with a water inlet pipe (11) and a water outlet pipe (12); the positive electrode and the negative electrode of the power supply (20) penetrate through two sides of the standing box (10) respectively and are connected with conducting plates (21), the conducting plates (21) are fixedly connected to the inner side wall of the standing box (10), the two conducting plates (21) are respectively and correspondingly provided with an anion membrane (22) and a cation membrane (23), and the anion membrane (22) and the cation membrane (23) are both positioned in the standing box (10); two wiper blades (30), wherein the two wiper blades (30) can respectively adhere to the anion membrane (22) and the cation membrane (23); a drive assembly (40) for sliding the two blades (30) on the anionic membrane (22) and the cationic membrane (23), respectively, by means of the drive assembly (40); and the wastewater enters the standing box (10) through the water inlet pipe (11) or is discharged out of the standing box (10) through the water outlet pipe (12).
2. Electrodialysis unit for wastewater treatment according to claim 1, wherein the rest compartment (10) is composed of a first block (13) and a second block (14), the first block (13) and the second block (14) are both opened with rectangular grooves (15), the water inlet pipe (11) is communicated with the rectangular groove (15) in the first block (13), the water outlet pipe (12) is communicated with the rectangular groove (15) in the second block (14), and the two conductive plates (21) are fixedly connected with the rectangular groove (15) in the first block (13) and the rectangular groove (15) in the second block (14), respectively.
3. Electrodialysis unit for wastewater treatment according to claim 2, wherein the positive and negative poles of the power source (20) are connected with leads (24), one of the leads (24) has a switch, and the two leads (24) respectively penetrate through the side walls of the first block (13) and the second block (14) and are respectively connected with the two conductive plates (21).
4. Electrodialysis unit for wastewater treatment according to claim 2, wherein two connection plates (25) are fixedly connected to the rectangular grooves (15) in the first block (13) and the rectangular grooves (15) in the second block (14), the anionic membrane (22) and the cationic membrane (23) are fixedly connected to the corresponding two connection plates (25), and the thickness of any one connection plate (25) is the same as the thickness of the anionic membrane (22) or the cationic membrane (23).
5. Electrodialysis unit for wastewater treatment according to claim 2, characterized in that the wiper blade (30) has a circular truncated cone (31), a plurality of arc plates (32) are fixedly connected to the circular truncated cone (31), the circumferences of the arc plates are distributed at equal intervals, and the arc plates (32) are provided with variable flow blocks (33).
6. Electrodialysis unit for wastewater treatment according to claim 5, wherein the driving assembly (40) comprises four parallel sliding grooves (41) formed on the first block (13) and the second block (14), the sliding grooves (41) are slidably connected with sliding plates (42), the four sliding plates (42) are fixedly connected through transverse plates (43), two sliding plates (42) are fixedly connected with two scraping blades (30) respectively, and the other two sliding plates (42) are fixedly connected with abutting plates (412).
7. Electrodialysis unit for wastewater treatment according to claim 6, wherein the driving assembly (40) further comprises two baffles (44) fixedly connected to the sliding plate (42), wherein the first block (13) and the second block (14) are fixedly connected with fixing blocks (45), the fixing blocks (45) are provided with a reset groove (46), the reset groove (46) is connected with a reset block (48) through an elastic member (47), and the reset block (48) is fixedly connected with the corresponding baffle (44).
8. The electrodialysis device for wastewater treatment according to claim 6, wherein the smaller diameter end of the truncated cone (31) is rotatably connected with a drum (49), the drum (49) is open towards the smaller diameter end of the truncated cone (31), a DC motor (410) is fixedly installed on the inner wall of the drum (49), the output shaft of the DC motor (410) is fixedly connected to the center of the smaller diameter end of the truncated cone (31), the outer wall of the drum (49) is fixedly connected with a corresponding sliding plate (42), and the drum (49), the sliding plate (42) and the transverse plate (43) are made of conductive and non-corrosive materials.
9. Electrodialysis unit for wastewater treatment according to claim 1, wherein a frame (411) is further fixedly connected to the stationary box (10), two layers of filter screens are arranged on the frame (411) and are not in contact with each other, and activated carbon is arranged between the two layers of filter screens.
10. Electrodialysis device for wastewater treatment according to claim 2, wherein two of said conductive plates (21) have slots, said conductive plates (21) having a spacer (26) fixedly connected thereto, said spacer (26) having a length smaller than the length of said conductive plates (21), said spacer (26) having a resistance plate (27) fixedly connected thereto, said resistance plate (27) having a predetermined resistance value, said resistance plate (27) having a synapse, and the synapse being in contact with said conductive plates (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211044148.6A CN115124117A (en) | 2022-08-30 | 2022-08-30 | Electrodialysis device for wastewater treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211044148.6A CN115124117A (en) | 2022-08-30 | 2022-08-30 | Electrodialysis device for wastewater treatment |
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| CN115124117A true CN115124117A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211044148.6A Pending CN115124117A (en) | 2022-08-30 | 2022-08-30 | Electrodialysis device for wastewater treatment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918215A (en) * | 1960-08-19 | 1963-02-13 | American Mach & Foundry | Water treatment |
| CN210764489U (en) * | 2019-10-15 | 2020-06-16 | 山东北华环保股份有限公司 | Automatic frequent electrode-reversing electrodialysis equipment |
| CN111924943A (en) * | 2020-09-16 | 2020-11-13 | 山东龙安泰环保科技有限公司 | Electrodialysis device for resource utilization of high-salinity wastewater produced by pickling tuber mustard |
| CN113354040A (en) * | 2021-06-04 | 2021-09-07 | 杭州贝思特节能环保科技有限公司 | Salting electrodialysis device and using method thereof |
-
2022
- 2022-08-30 CN CN202211044148.6A patent/CN115124117A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918215A (en) * | 1960-08-19 | 1963-02-13 | American Mach & Foundry | Water treatment |
| CN210764489U (en) * | 2019-10-15 | 2020-06-16 | 山东北华环保股份有限公司 | Automatic frequent electrode-reversing electrodialysis equipment |
| CN111924943A (en) * | 2020-09-16 | 2020-11-13 | 山东龙安泰环保科技有限公司 | Electrodialysis device for resource utilization of high-salinity wastewater produced by pickling tuber mustard |
| CN113354040A (en) * | 2021-06-04 | 2021-09-07 | 杭州贝思特节能环保科技有限公司 | Salting electrodialysis device and using method thereof |
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