CN210261400U - Waste acid recovery processing device - Google Patents
Waste acid recovery processing device Download PDFInfo
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- CN210261400U CN210261400U CN201920916121.9U CN201920916121U CN210261400U CN 210261400 U CN210261400 U CN 210261400U CN 201920916121 U CN201920916121 U CN 201920916121U CN 210261400 U CN210261400 U CN 210261400U
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Abstract
The utility model discloses a waste acid recovery treatment device, wherein waste acid solution enters a sedimentation tank through a conveying pipeline and then sequentially enters a primary membrane system, an electrolysis device, a secondary membrane system, an acid-base neutralization tank and a liquid storage tank through a conveying pipe; the electrolytic device comprises an electrolytic tank, a rotating device is installed at the bottom of the electrolytic tank, a plurality of electrolytic cells are arranged on the rotating device in an equidistant mode, a waste liquid outlet is formed in the periphery of the bottom of each electrolytic cell, an acid liquid inlet and a clear liquid outlet are formed in the top of each electrolytic cell, a conveying pipeline is connected with the acid liquid inlet of a first electrolytic cell, the clear liquid outlet of the first electrolytic cell is connected with the acid liquid inlet of the next adjacent electrolytic cell and sequentially connected, and the clear liquid outlet of the last electrolytic cell is connected with a secondary membrane system. The utility model realizes the step-by-step separation and removal of heavy metal ions in the waste acid through the design of the electrolysis device, so that the waste acid solution is effectively purified; the recycling rate of the waste acid is improved, and the waste liquid treatment cost of enterprises can be effectively saved.
Description
Technical Field
The invention relates to the technical field of battery waste acid treatment, in particular to a waste acid recovery treatment device.
Background
In the production of batteries, large amounts of waste acids based on sulfuric acid are usually produced. These waste acids contain some impurities, heavy metal ions, etc., and if discharged directly, they may have adverse effects on the environment.
The existing waste acid recovery treatment method is mainly used for filtering impurities in the waste acid, and the metal ions in the waste acid cannot be effectively removed, or the removal effect is poor, so that the effective recovery and secondary utilization of the waste acid are influenced, and meanwhile, the heavy metal pollution and the heavy metal waste of a water body are caused.
Disclosure of Invention
The invention mainly solves the technical problem of providing a waste acid recovery and treatment device.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a waste acid recovery processing device, comprising: a sedimentation tank, a primary membrane system, an electrolysis device, a secondary membrane system, an acid-base neutralization tank and a liquid storage tank; the waste acid solution enters a sedimentation tank through a conveying pipeline and then sequentially enters a primary membrane system, an electrolysis device, a secondary membrane system, an acid-base neutralization tank and a liquid storage tank through a conveying pipe; the electrolytic device comprises an electrolytic tank, a rotating device is installed at the bottom of the electrolytic tank, a plurality of electrolytic cells are arranged on the rotating device in an equidistant mode, a waste liquid outlet is formed in the periphery of the bottom of each electrolytic cell, an acid liquid inlet and a clear liquid outlet are formed in the top of each electrolytic cell, a conveying pipeline of the primary membrane system is connected with the acid liquid inlet in the top of the first electrolytic cell, the first electrolytic cell is connected with the acid liquid inlet in the top of the next adjacent electrolytic cell through the clear liquid outlet in the top of the first electrolytic cell and sequentially connected, and the clear liquid outlet in the top of the last electrolytic cell is connected with the secondary membrane system through the conveying pipeline.
In a preferred embodiment of the invention, the number of the electrolytic cells is more than 3.
In a preferred embodiment of the present invention, the electrolytic cell is a cylindrical structure, the diameter of the cylindrical structure gradually decreases from the middle to the two ends, the acid liquid inlet extends into the electrolytic cell, and the clear liquid outlet is arranged at the top end of the electrolytic cell.
In a preferred embodiment of the invention, the ratio of the height to the maximum diameter of the cell is 5: 3.
In a preferred embodiment of the present invention, the rotating device comprises a motor and a support plate, wherein the motor is fixedly mounted on the support plate, and the electrolytic cell is in power connection with the output end of the motor and performs in-situ rotation movement under the power of the motor.
In a preferred embodiment of the invention, the number of said motors is matched to the number of said electrolysis cells.
In a preferred embodiment of the present invention, a first filter screen and a second filter screen are installed in the settling tank at intervals from top to bottom, wherein the number of screen layers of the second filter screen is greater than that of the first filter screen.
In a preferred embodiment of the invention, the mesh size of the second filter is smaller than the mesh size of the first filter.
In a preferred embodiment of the invention, the filtration membranes of the primary membrane system and the secondary membrane system are both acid-resistant membranes.
In a preferred embodiment of the invention, the bottom of the electrolytic tank is provided with a waste liquid outlet, and the waste liquid outlet is connected with a waste liquid pool.
The invention has the beneficial effects that: the waste acid recovery treatment device is reasonable in structural design, and through the design of the electrolysis device, the heavy metal ions in the waste acid are separated and removed step by step, so that the waste acid solution is effectively purified; the recycling rate of the waste acid is improved, the resource is saved, the pollution is reduced, the waste liquid treatment cost of enterprises can be effectively saved, and the market prospect is wide.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a waste acid recycling apparatus of the present invention;
the parts in the drawings are numbered as follows: 1. the device comprises a sedimentation tank, a first-stage membrane system, a 3-electrolysis device, a 4-second-stage membrane system, a 5-acid-base neutralization tank, a 6-water storage tank, a 7-conveying pipe, a 8-waste liquid tank, a 9-infusion pump, a 11-first filter screen, a 12-second filter screen, a 31-electrolysis tank, a 32-electrolysis tank, a 33-support plate, a 34-motor, a 321-acid liquid inlet, a 322-clear liquid outlet and a 323-waste liquid outlet.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1, an embodiment of the present invention includes:
example 1
The invention discloses a waste acid recovery processing device, which comprises: a sedimentation tank 1, a primary membrane system 2, an electrolysis device 3, a secondary membrane system 4, an acid-base neutralization tank 5 and a liquid storage tank 6; the waste acid solution enters the sedimentation tank 1 through the conveying pipeline 7 and then sequentially enters the primary membrane system 2, the electrolysis device 3, the secondary membrane system 4, the acid-base neutralization tank 5 and the liquid storage tank 6 through the conveying pipeline.
The sedimentation tank 1 is internally provided with a first filter screen 11 and a second filter screen 12 at intervals from top to bottom, the number of the second filter screen 12 is larger than that of the first filter screen 11, and the mesh size of the second filter screen 12 is smaller than that of the first filter screen 11. Through the design of two-stage filter screen, can effectively go out the impurity in the spent acid.
The electrolytic device 3 comprises an electrolytic tank 31, a rotating device and an electrolytic cell 32, wherein the rotating device comprises a supporting disc 33 and a motor 34, the motor 34 is fixedly arranged on the supporting disc 33, and the electrolytic cell 32 is in power connection with the output end of the motor 34 and performs in-situ rotation movement under the power action of the motor 34. The number of the electrolytic cells 32 is multiple, and is usually more than 3, each electrolytic cell 32 is annularly arranged on the rotating device at equal intervals (in power connection with a motor), and the number and the installation position of the motors 34 are matched with those of the electrolytic cells 32. The electrolytic cells 32 are of a cylindrical structure, the diameter of the cylindrical structure is gradually reduced from the middle to two ends, an acid liquid inlet 321 and a clear liquid outlet 322 are formed in the top of each electrolytic cell, a plurality of waste liquid outlets 323 are formed around the bottom of each electrolytic cell, the acid liquid inlet 321 extends into the electrolytic cell 32, specifically extends into the upper half barrel of the electrolytic cell 32, and the clear liquid outlet 322 is formed in the top end of the electrolytic cell 32. The conveying pipeline 7 of the primary membrane system 2 is connected with the acid liquor inlet 321 at the top of the first electrolytic cell 32, the first electrolytic cell 32 is connected with the acid liquor inlet 321 at the top of the next adjacent electrolytic cell through the clear liquor outlet 322 at the top of the first electrolytic cell, and the clear liquor outlet 322 at the top of the last electrolytic cell is connected with the secondary membrane system 4 through the conveying pipeline 7. An outlet is formed in the bottom of the electrolytic tank 31 and is connected with the waste liquid pool 8. The ratio of the height to the maximum diameter of the cell is 5: 3.
And the filtering membranes of the first-stage membrane system 2 and the second-stage membrane system 4 are acid-resistant membranes.
The top of the acid-base neutralization tank 5 is also provided with an alkali liquor inlet; and an infusion pump 9 is arranged between the secondary membrane system 2 and the electrolysis device 3.
The working principle of the invention is as follows: the waste liquid is filtered and settled to remove impurities in the settling tank, then enters a first-stage membrane system for first fine filtration, then enters a first electrolytic tank in an electrolytic device, heavy metal ions and other heavy components in the waste acid move downwards due to the in-situ high-speed rotary motion of the first electrolytic tank under the drive of a motor, and flow into an electrolytic tank through a waste liquid outlet at the bottom of the electrolytic tank, light components without heavy metal ions move upwards, enter the next electrolytic tank through a clear liquid outlet at the top, then are subjected to in-situ high-speed rotary separation, waste acid with heavy metal ions discharged through the last electrolytic tank is subjected to secondary fine filtration through a clear liquid outlet, is neutralized in an acid-alkali neutralization tank, and enters a water storage tank for reuse. Wherein, the waste liquid containing heavy metal ions such as iron ions, copper ions, lead ions and the like flowing into the electrolytic tank from each electrolytic cell flows into the waste liquid tank through the bottom outlet of the electrolytic tank for centralized and unified treatment.
After testing, the waste acid solution treated by the device has the advantages that the residual concentration of heavy metal ions such as copper ions, iron ions, lead ions and the like reaches PPM level, and the heavy metal ion removal effect is good; the recovery utilization rate of waste acid is as high as 60-70%, and the method is obviously improved compared with the prior art.
The waste acid recovery treatment device is reasonable in structural design, and through the design of the electrolysis device, the heavy metal ions in the waste acid are separated and removed step by step, so that the waste acid solution is effectively purified; the recycling rate of the waste acid is improved, the resource is saved, the pollution is reduced, the waste liquid treatment cost of enterprises can be effectively saved, and the market prospect is wide.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements indicated 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. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A spent acid recovery processing device, comprising: a sedimentation tank, a primary membrane system, an electrolysis device, a secondary membrane system, an acid-base neutralization tank and a liquid storage tank; the waste acid solution enters a sedimentation tank through a conveying pipeline and then sequentially enters a primary membrane system, an electrolysis device, a secondary membrane system, an acid-base neutralization tank and a liquid storage tank through a conveying pipe; the electrolytic device comprises an electrolytic tank, a rotating device is installed at the bottom of the electrolytic tank, a plurality of electrolytic cells are arranged on the rotating device in an equidistant mode, a waste liquid outlet is formed in the periphery of the bottom of each electrolytic cell, an acid liquid inlet and a clear liquid outlet are formed in the top of each electrolytic cell, a conveying pipeline of the primary membrane system is connected with the acid liquid inlet in the top of the first electrolytic cell, the first electrolytic cell is connected with the acid liquid inlet in the top of the next adjacent electrolytic cell through the clear liquid outlet in the top of the first electrolytic cell and sequentially connected, and the clear liquid outlet in the top of the last electrolytic cell is connected with the secondary membrane system through the conveying pipeline.
2. A waste acid recovery processing device as claimed in claim 1, wherein the number of said electrolytic cells is 3 or more.
3. The waste acid recovery processing device of claim 2, wherein the electrolytic cell is a cylindrical structure, the diameter of the cylindrical structure gradually decreases from the middle to two ends, the acid inlet extends into the electrolytic cell, and the clear liquid outlet is arranged at the top end of the electrolytic cell.
4. A spent acid recovery processing apparatus according to claim 3, wherein the ratio of the height to the maximum diameter of the cell is 5: 3.
5. The waste acid recovery processing device of claim 1, wherein the rotating device comprises a motor and a supporting disc, wherein the motor is fixedly mounted on the supporting disc, and the electrolytic cell is in power connection with an output end of the motor and performs in-situ rotation under the power of the motor.
6. A spent acid recovery processing apparatus as claimed in claim 5, wherein the number of motors matches the number of electrolytic cells.
7. The waste acid recovery processing device of claim 1, wherein a first filter screen and a second filter screen are installed in the sedimentation tank at intervals from top to bottom, and the number of the screen layers of the second filter screen is larger than that of the first filter screen.
8. A waste acid recovery processing device as claimed in claim 7, wherein the mesh size of the second filter is smaller than the mesh size of the first filter.
9. The waste acid recovery processing device of claim 1, wherein the filtration membranes of the primary membrane system and the secondary membrane system are both acid-resistant membranes.
10. A waste acid recovery processing device as claimed in claim 1, wherein the bottom of the electrolytic tank is provided with a waste liquid outlet, and the waste liquid outlet is connected with a waste liquid pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916121.9U CN210261400U (en) | 2019-06-18 | 2019-06-18 | Waste acid recovery processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916121.9U CN210261400U (en) | 2019-06-18 | 2019-06-18 | Waste acid recovery processing device |
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| Publication Number | Publication Date |
|---|---|
| CN210261400U true CN210261400U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920916121.9U Active CN210261400U (en) | 2019-06-18 | 2019-06-18 | Waste acid recovery processing device |
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| Country | Link |
|---|---|
| CN (1) | CN210261400U (en) |
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2019
- 2019-06-18 CN CN201920916121.9U patent/CN210261400U/en active Active
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