CN220845672U - Cyanide-containing wastewater treatment system - Google Patents
Cyanide-containing wastewater treatment system Download PDFInfo
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- CN220845672U CN220845672U CN202322460705.9U CN202322460705U CN220845672U CN 220845672 U CN220845672 U CN 220845672U CN 202322460705 U CN202322460705 U CN 202322460705U CN 220845672 U CN220845672 U CN 220845672U
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- cyanide
- oxidation
- electrolytic
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- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 59
- 230000003647 oxidation Effects 0.000 claims abstract description 56
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 56
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000012806 monitoring device Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 66
- 239000007800 oxidant agent Substances 0.000 claims description 22
- 239000003513 alkali Substances 0.000 claims description 20
- 230000001590 oxidative effect Effects 0.000 claims description 18
- 239000002253 acid Substances 0.000 claims description 17
- 239000011550 stock solution Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 comprises two stages Chemical compound 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The application relates to the technical field of wastewater treatment, in particular to a cyanide-containing wastewater treatment system, which comprises an electrolysis mechanism: the method is used for carrying out electrolytic treatment on cyanide-containing wastewater; oxidation mechanism: the method is used for carrying out oxidation treatment on the cyanide-containing wastewater after electrolysis; monitoring device: the application is used for monitoring the acid-base value of the cyanide-containing wastewater in the oxidation mechanism, and has the effect of improving the treatment effect of the cyanide-containing wastewater.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to a cyanide-containing wastewater treatment system.
Background
A large amount of cyanide-containing wastewater is generated in the industrial manufacturing process, and if the cyanide-containing wastewater is not treated, the cyanide-containing wastewater can cause great harm to the environment and people.
Because the cyanide-containing wastewater is relatively large in quantity, the currently adopted treatment process mainly uses electrolysis to break cyanide and sodium hypochlorite to oxidize and break cyanide, and then the cyanide is evaporated and recycled. The reaction process of oxidizing cyanide by sodium hypochlorite mainly comprises two stages, wherein the first stage is to oxidize cyanide into cyanate, and the second stage is to further oxidize cyanate into carbon dioxide and nitrogen. If the sodium hypochlorite is excessive, a large amount of salt water and waste gas are generated in the oxidation process of the cyanide-containing wastewater, if the sodium hypochlorite is insufficient, the cyanide-containing wastewater treatment effect is reduced, so that in order to improve the cyanide-containing wastewater treatment effect, a treatment system convenient for controlling the cyanide-containing wastewater oxidation process needs to be developed.
Disclosure of utility model
In order to improve the treatment effect of cyanide-containing wastewater, the application provides a cyanide-containing wastewater treatment system.
The application provides a cyanide-containing wastewater treatment system which adopts the following technical scheme:
A cyanide-containing wastewater treatment system comprising, an electrolysis mechanism: the method is used for carrying out electrolytic treatment on cyanide-containing wastewater; oxidation mechanism: the method is used for carrying out oxidation treatment on the cyanide-containing wastewater after electrolysis; monitoring device: the method is used for monitoring the acid-base value of cyanide-containing wastewater in the oxidation mechanism.
Through adopting above-mentioned technical scheme, monitoring device's setting is convenient for monitor the pH valve of the waste water after the electrolysis, inputs the oxidant of suitable quantity in to the waste water according to the pH valve of actual waste water to the treatment effect to cyanide-containing waste water has been improved.
Optionally, the electrolysis mechanism includes stock solution tower and electrolysis tower, be connected with the feed liquor pipe on the stock solution tower, be provided with first fluid-discharge tube and first circulating pipe between stock solution tower and the electrolysis tower, waste water in the first fluid-discharge tube flows to the electrolysis tower from the stock solution tower, be connected with back liquid pipe and output tube through the three-way pipe on the first circulating pipe, be provided with the shunt valve on the three-way pipe, the one end of keeping away from the three-way pipe of back liquid pipe is connected with the top of stock solution tower, waste water in the electrolysis tower is through first circulating pipe and back liquid pipe input stock solution tower, waste water in the electrolysis tower is carried towards oxidation mechanism through first circulating pipe and output tube.
Through adopting above-mentioned technical scheme, through fluid-discharge tube and circulating pipe, realize the circulation of cyanide waste water between stock solution tower and electrolytic tower, carry out multiple electrolytic treatment to the cyanide waste water, improved the treatment effect to the cyanide waste water.
Optionally, the electrolysis mechanism still includes the cistern, the cistern sets up between reservoir and electrolytic tower, be connected with first fluid-discharge tube between the top of reservoir and reservoir, be connected with first pump body on the first fluid-discharge tube, the bottom of cistern is connected with the second fluid-discharge tube, be connected with the second pump body on the second fluid-discharge tube, electrolytic tower and the top of cistern are connected with the second circulating pipe, first circulating pipe is connected between reservoir and reservoir, be connected with the third pump body on the first circulating pipe.
Through adopting above-mentioned technical scheme, the setting of cistern can carry out hydrolysis treatment to cyanide waste water earlier, reduces the concentration of cyanide in the waste water, is convenient for carry out electrolytic treatment to waste water.
Optionally, two second pump bodies on the second liquid discharge pipe are arranged, and the two second pump bodies are arranged in parallel.
By adopting the technical scheme, the two pump bodies are connected in parallel, so that when one pump body fails, the other pump body can be used for working.
Optionally, the oxidation mechanism includes oxidant tower, acidizing fluid tower, alkali lye tower and oxidation tower, all be connected with the transfer line between oxidant tower and the oxidation tower, between acidizing fluid tower and the oxidation tower, between alkali lye tower and the oxidation tower, all be connected with the control valve on the three the transfer line, be connected with the fluid-discharge tube on the oxidation tower.
Optionally, the monitoring device comprises a PH value detection part connected in the oxidation tower, the oxidant tower, the acid liquor tower and the alkali liquor tower, the PH value detection part in the oxidant tower is electrically connected with a control valve between the oxidant tower and the oxidation tower, the PH value detection part in the acid liquor tower is electrically connected with a control valve between the acid liquor tower and the oxidation tower, and the PH value detection part in the alkali liquor tower is electrically connected with a control valve between the alkali liquor tower and the oxidation tower.
By adopting the technical scheme, the amount of the oxidant, the acid liquor and the alkali liquor which are input into the oxidation tower is regulated and controlled by detecting the PH value of the wastewater in the oxidation tower, so that the oxidant, the acid liquor and the alkali liquor with proper capacities are input into the tank wastewater, and the oxidation effect is improved.
Optionally, the cartridge filter is coaxially inserted on the liquid storage tower, the top of the cartridge filter is connected with a sealing cover, and the liquid inlet pipe is connected with the sealing cover.
Through adopting above-mentioned technical scheme, the cartridge filter filters the solid magazine in the cyanide-containing waste water that gets into the stock solution tower, and the setting of cartridge filter realizes the prefiltering treatment to the cyanide-containing waste water.
Optionally, be provided with the negative pole electrode piece and the positive pole electrode piece that are used for electrolytic processing in the electrolytic tower, negative pole electrode piece and positive pole electrode piece are close to the bottom setting of electrolytic tower, the top of electrolytic tower is connected with the access cover, the interception net has been inserted to the electrolytic tower, the interception net is located the top of electrode piece.
Through adopting above-mentioned technical scheme, during the electrolysis, can separate out metal salt on the cathode electrode piece, the waste water after the electrolysis returns the cistern through the second circulating pipe and circulates, intercepts the net and intercepts the metal salt that separates out.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The monitoring device is convenient to monitor the pH value of the electrolyzed wastewater, and a proper amount of oxidizing agent is input into the wastewater according to the pH value of the actual wastewater, so that the cyanide-containing wastewater treatment effect is improved;
2. The circulation of the cyanide-containing wastewater between the liquid storage tower and the electrolytic tower is realized through the liquid discharge pipe and the circulating pipe, and the cyanide-containing wastewater is subjected to multiple electrolytic treatment, so that the cyanide-containing wastewater treatment effect is improved;
3. The two pumps are connected in parallel so that when one pump fails, the other pump can be used for operation.
Drawings
FIG. 1 is a schematic view showing the overall structure of a cyanide-containing wastewater treatment system according to embodiment 1 of the present application;
FIG. 2 is a schematic view showing the structure of a liquid storage tower in embodiment 2 for embodying the present application;
FIG. 3 is a schematic view showing the structure of an electrolytic column used in example 2 embodying the present application.
Reference numerals illustrate:
1. A liquid storage tower; 2. a reservoir; 3. an electrolytic tower; 4. a liquid inlet pipe; 5. a first liquid discharge pipe; 6. a second liquid discharge pipe; 7. a first pump body; 8. a second pump body; 9. a first circulation pipe; 10. a second circulation pipe; 11. a third pump body; 12. a three-way pipe; 13. a liquid return pipe; 14. an output pipe; 15. an oxidant column; 16. an acid liquor tower; 17. an alkali liquor tower; 18. an oxidation tower; 19. an infusion tube; 20. a control valve; 21. a fourth pump body; 22. a liquid outlet pipe; 23. a filter cartridge; 24. a positioning groove; 25. an interception net.
Detailed Description
The embodiment of the application discloses a cyanide-containing wastewater treatment system.
Example 1
Referring to fig. 1, a cyanide-containing wastewater treatment system includes an electrolysis mechanism including a liquid storage tower 1, a water reservoir 2, and an electrolysis tower 3, and an oxidation mechanism.
Referring to fig. 1, a liquid inlet pipe 4 is connected to a liquid storage tower 1, cyanide-containing wastewater is input to the liquid storage tower 1 by the liquid inlet pipe 4 for storage, a first liquid discharge pipe 5 is connected between the bottom of the liquid storage tower 1 and the top of a reservoir 2, a first pump body 7 is connected to the first liquid discharge pipe 5, a second liquid discharge pipe 6 is connected to the bottom of the reservoir 2, a second pump body 8 group is connected to the second liquid discharge pipe 6, the second pump body 8 group comprises two second pump bodies 8 which are arranged in parallel, two input pipes are connected to the bottom of an electrolytic tower 3, and one ends of the input pipes far away from the bottom of the electrolytic tower 3 are connected with the second liquid discharge pipe 6.
Referring to fig. 1, the top of the electrolytic tower 3 and the top of the reservoir 2 are connected with a second circulating pipe 10, the bottom of the reservoir 2 is connected with a first circulating pipe 9, a third pump body 11 set is connected to the first circulating pipe 9, the third pump body 11 set comprises two third pump bodies 11 arranged in parallel, one end of the first circulating pipe 9, far away from the reservoir 2, is connected with a liquid return pipe 13 and an output pipe 14 through a three-way pipe 12, a branch valve is arranged on the three-way pipe 12, and one end, far away from the three-way pipe 12, of the liquid return pipe 13 is connected with the top of the liquid storage tower 1.
Referring to fig. 1, the oxidation mechanism comprises an oxidant tower 15, an acid liquor tower 16, an alkali liquor tower 17 and an oxidation tower 18, wherein a transfusion tube 19 is connected between the oxidant tower 15 and the oxidation tower 18, between the acid liquor tower 16 and the oxidation tower 18, and between the alkali liquor tower 17 and the oxidation tower 18, control valves 20 are connected to the three transfusion tubes 19, one end of the output tube 14, which is far away from the three-way pipe 12, is connected with the oxidation tower 18, a liquid outlet tube 22 is connected to the oxidation tower 18, a fourth pump body 21 group is connected to the liquid outlet tube, and the fourth pump body 21 group comprises two fourth pump bodies 21 which are arranged in parallel.
Referring to fig. 1, a cyanide-containing wastewater treatment system further includes a monitoring device including PH detecting members connected to the oxidation tower 18, the liquid storage tower 1, the water reservoir 2, the oxidizer tower 15, the acid liquid tower 16, and the alkali liquid tower 17. Two PH value detecting pieces are arranged in the oxidation tower 18, one PH value detecting piece is positioned near the end part of the output pipe 14, and the other PH value detecting piece is positioned near the end part of the liquid discharge pipe; the PH value detection part in the liquid storage tower 1 is close to the end part of the first liquid discharge pipe 5; the PH value detecting piece in the oxidizer tower 15 is electrically connected with the control valve 20 between the oxidizer tower 15 and the oxidizer tower 18; the PH value detection part in the acid liquor tower 16 is electrically connected with the control valve 20 between the acid liquor tower 16 and the oxidation tower 18; the PH value detecting piece in the alkali liquor tower 17 is electrically connected with a control valve 20 between the alkali liquor tower 17 and the oxidation tower 18.
The application relates to a cyanide-containing wastewater treatment system, which is implemented by the following principle:
The cyanide-containing wastewater is firstly input into the liquid storage tower 1 through the liquid inlet pipe 4, then the wastewater is conveyed towards the water storage tower 2 through the first liquid outlet pipe 5, the water in the water storage tower 2 can hydrolyze the cyanide-containing wastewater to a certain extent, the wastewater flows towards the electrolytic tower 3 through the interception net 25 and the second liquid outlet pipe 6, the wastewater is subjected to primary electrolytic treatment in the electrolytic tower 3, the wastewater after primary electrolytic treatment is input into the water storage tower 2 through the second circulating pipe 10 and returns into the liquid storage tower 1 through the first circulating pipe 9 and the liquid return pipe 13, the water subjected to primary electrolytic treatment is repeatedly input into the electrolytic tower 3 for secondary electrolytic treatment and tertiary electrolytic treatment, the wastewater subjected to tertiary electrolytic treatment is input into the oxidation tower 18 through the first circulating pipe 9 and the output pipe 14, the PH value of the wastewater subjected to electrolytic treatment is detected by the PH value detection piece, then the control valve 20 between the oxidant tower 15 and the oxidation tower 18, the control valve 20 between the acid liquor tower 16 and the oxidation tower 18, the control valve 20 between the alkali liquor tower 17 and the oxidation tower 18, the bleaching agent, the alkali liquor and the wastewater subjected to oxidation treatment in the oxidation tower 18 are input into the oxidation tower 18, the wastewater is subjected to secondary electrolytic treatment and finally discharged through the liquid outlet pipe 22.
Example 2
Referring to fig. 2, the difference from embodiment 1 is that a filter cartridge 23 is inserted into the liquid storage tower 1, an insertion hole is provided at the top of the liquid storage tower 1, an insertion slot is provided on the side wall of the insertion hole, an insertion strip is connected to the side wall of the filter cartridge 23, the insertion strip is inserted into the insertion slot, a positioning groove 24 adapted to the filter cartridge 23 is provided at the inner bottom of the liquid storage tower 1, the bottom of the filter cartridge 23 is inserted into the positioning groove 24, a cover is connected to the top of the filter cartridge 23, and the liquid inlet pipe 4 is connected to the cover. The filter cartridge 23 filters the solids magazines in the cyanide-containing wastewater entering the liquid storage column 1.
Referring to fig. 3, an exhaust gas treatment device for treating gas generated in the process of electrolyzing cyanide-containing wastewater is connected to the electrolytic tower 3. In the embodiment, a cathode electrode plate and an anode electrode plate in the electrolytic tower 3 are arranged close to the bottom of the electrolytic tower 3, the top of the electrolytic tower 3 is connected with an access cover, an interception net 25 is inserted in the electrolytic tower 3, and the interception net 25 is positioned above the electrode plates. Cyanide-containing wastewater enters the electrolytic tower 3 from the bottom of the electrolytic tower 3 through a second liquid discharge pipe 6, metal salt impurities generated in the wastewater in the electrolytic process can be separated out on a cathode, the electrolyzed wastewater returns to the reservoir 2 for circulation through a second circulating pipe 10, and the separated out metal salt is intercepted by the interception net 25.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A cyanide-containing wastewater treatment system is characterized in that: comprising the following steps:
an electrolysis mechanism: the method is used for carrying out electrolytic treatment on cyanide-containing wastewater;
oxidation mechanism: the method is used for carrying out oxidation treatment on the cyanide-containing wastewater after electrolysis;
monitoring device: the method is used for monitoring the acid-base value of cyanide-containing wastewater in the oxidation mechanism;
The utility model provides an electrolytic mechanism includes stock solution tower (1) and electrolysis tower (3), be connected with feed liquor pipe (4) on stock solution tower (1), be provided with first fluid-discharge tube (5) and first circulating pipe (9) between stock solution tower (1) and electrolysis tower (3), waste water in first fluid-discharge tube (5) flows from stock solution tower (1) to electrolysis tower (3), be connected with back liquid pipe (13) and output tube (14) on first circulating pipe (9) through three-way pipe (12), be provided with the shunt valve on three-way pipe (12), the one end that keeps away from three-way pipe (12) of back liquid pipe (13) is connected with the top of stock solution tower (1), waste water in electrolysis tower (3) is through first circulating pipe (9) and back liquid pipe (13) input stock solution tower (1), waste water in electrolysis tower (3) is carried towards oxidation mechanism through first circulating pipe (9) and output tube (14);
The oxidation mechanism comprises an oxidant tower (15), an acid liquor tower (16), an alkali liquor tower (17) and an oxidation tower (18), wherein a liquid conveying pipe (19) is connected between the oxidant tower (15) and the oxidation tower (18), between the acid liquor tower (16) and the oxidation tower (18) and between the alkali liquor tower (17) and the oxidation tower (18), three control valves (20) are connected to the liquid conveying pipes (19), and liquid discharging pipes are connected to the oxidation tower (18).
2. A cyanide-containing wastewater treatment system according to claim 1, wherein: the electrolytic mechanism further comprises a reservoir (2), the reservoir (2) is arranged between the liquid storage tower (1) and the electrolytic tower (3), a first liquid discharge pipe (5) is connected between the liquid storage tower (1) and the top of the reservoir (2), a first pump body (7) is connected to the first liquid discharge pipe (5), a second liquid discharge pipe (6) is connected between the reservoir (2) and the electrolytic tower (3), a second pump body (8) is connected to the second liquid discharge pipe (6), a second circulating pipe (10) is connected to the top of the electrolytic tower (3) and the reservoir (2), a first circulating pipe (9) is connected between the reservoir (2) and the liquid storage tower (1), and a third pump body (11) is connected to the first circulating pipe (9).
3. A cyanide-containing wastewater treatment system according to claim 2, wherein: two second pump bodies (8) on the second liquid discharge pipe (6) are arranged, and the two second pump bodies (8) are arranged in parallel.
4. A cyanide-containing wastewater treatment system according to claim 1, wherein: the monitoring device comprises a PH value detection part connected in an oxidation tower (18), an oxidant tower (15), an acid liquor tower (16) and an alkali liquor tower (17), the PH value detection part in the oxidant tower (15) is electrically connected with a control valve (20) between the oxidant tower (15) and the oxidation tower (18), the PH value detection part in the acid liquor tower (16) is electrically connected with the control valve (20) between the acid liquor tower (16) and the oxidation tower (18), and the PH value detection part in the alkali liquor tower (17) is electrically connected with the control valve (20) between the alkali liquor tower (17) and the oxidation tower (18).
5. A cyanide-containing wastewater treatment system according to claim 1, wherein: the liquid storage tower (1) is inserted with a filter cartridge (23), the top of the filter cartridge (23) is connected with a sealing cover, and the liquid inlet pipe (4) is connected with the sealing cover.
6. A cyanide-containing wastewater treatment system according to claim 1, wherein: be provided with the negative pole electrode slice and the positive pole electrode slice that are used for electrolytic processing in electrolytic tower (3), negative pole electrode slice and positive pole electrode slice are close to the bottom setting of electrolytic tower (3), the top of electrolytic tower (3) is connected with the access cover, intercept net (25) have been inserted in electrolytic tower (3), intercept net (25) are located the top of electrode slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322460705.9U CN220845672U (en) | 2023-09-09 | 2023-09-09 | Cyanide-containing wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322460705.9U CN220845672U (en) | 2023-09-09 | 2023-09-09 | Cyanide-containing wastewater treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN220845672U true CN220845672U (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322460705.9U Active CN220845672U (en) | 2023-09-09 | 2023-09-09 | Cyanide-containing wastewater treatment system |
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| Country | Link |
|---|---|
| CN (1) | CN220845672U (en) |
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2023
- 2023-09-09 CN CN202322460705.9U patent/CN220845672U/en active Active
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