CN216584596U - Device for recovering copper and nickel sulfate from electroplating wastewater - Google Patents
Device for recovering copper and nickel sulfate from electroplating wastewater Download PDFInfo
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- CN216584596U CN216584596U CN202122635232.2U CN202122635232U CN216584596U CN 216584596 U CN216584596 U CN 216584596U CN 202122635232 U CN202122635232 U CN 202122635232U CN 216584596 U CN216584596 U CN 216584596U
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Abstract
The utility model discloses a device for recovering copper and nickel sulfate from electroplating wastewater, which comprises a copper-nickel filtering and separating unit, an evaporation and concentration unit, a nickel collecting unit, an ultrafiltration unit and a cyclone electrolysis unit, wherein one end of the copper-nickel filtering and separating unit is connected to the evaporation and concentration unit, the other end of the copper-nickel filtering and separating unit is connected to the ultrafiltration unit, and the ultrafiltration unit is connected to the cyclone electrolysis unit. The device can simultaneously recycle copper \ nickel sulfate, and the purity of the recycled copper is more than 98%; the purity of the recovered nickel sulfate is over 85 percent.
Description
Technical Field
The utility model relates to the technical field of electroplating wastewater recovery devices, in particular to a device for recovering copper and nickel sulfate from electroplating wastewater.
Background
Electroplating is a process for plating a thin layer of other metals or alloys on the surfaces of metals and non-metals by utilizing the electrolysis principle in electrochemistry, which has the functions of preventing metal oxidation (corrosion), improving wear resistance, conductivity, light reflection, corrosion resistance, beauty improvement and the like, and is an indispensable process link for many industrial departments. The electroplating wastewater is a general name of electroplating solution, rinsing wastewater and various waste liquids generated in the production process of an electroplating plant.
The electroplating wastewater has very complicated components and contains Cyanogen (CN)-) Besides wastewater and acid-base wastewater, heavy metal wastewater is a wastewater category with great potential hazard in the electroplating industry. Heavy metal elements contained in heavy metal wastewater are classified, and generally classified into wastewater containing chromium (Cr), wastewater containing nickel (Ni), wastewater containing cadmium (Cd), wastewater containing copper (Cu), wastewater containing zinc (Zn), wastewater containing gold (Au), wastewater containing silver (Ag), and the like.
The electroplating wastewater treatment technology has low water return efficiency, and can not simultaneously carry out recovery treatment on copper and nickel sulfate.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a device for recovering copper and nickel sulfate from electroplating wastewater, which has high recovery efficiency on the copper and the nickel sulfate.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the device for recovering copper and nickel sulfate from electroplating wastewater comprises a copper-nickel filtering and separating unit, an evaporation and concentration unit, a nickel collecting unit, an ultrafiltration unit and a cyclone electrolysis unit, wherein one end of the copper-nickel filtering and separating unit is connected to the evaporation and concentration unit, the other end of the copper-nickel filtering and separating unit is connected to the ultrafiltration unit, and the ultrafiltration unit is connected to the cyclone electrolysis unit.
Further, separating copper and nickel sulfate in the electroplating wastewater in the copper-nickel filtering and separating unit; carrying out evaporative concentration of nickel sulfate in the evaporative concentration unit; the concentration of copper ions is increased in an ultrafiltration unit; carrying out enrichment and precipitation of copper in a cyclone electrolysis unit; collecting the nickel sulfate obtained by evaporation and concentration in a nickel collecting unit.
Further, the electroplating wastewater is collected in an electroplating wastewater collecting tank, filtered by a bag filter and then buffered in a transfer tank. And (4) introducing the electroplating wastewater cached in the transit tank into a copper-nickel filtering and separating unit. The copper-nickel filtering and separating unit is thus connected to a transit tank, which is connected to a bag filter, which is connected to an electroplating wastewater collection tank.
Further, copper nickel filtering separation unit includes extraction tank, first exchange column, backwash tank, second exchange column, be equipped with the charge door on the extraction tank, the extraction tank top is connected to the transfer tank, the extraction tank bottom is connected to first exchange column, the backwash tank is connected to the second exchange column, the second exchange column is connected to the ultrafiltration unit.
Further, the ultrafiltration unit comprises a reverse osmosis membrane filter.
Further, the cyclone electrolysis unit comprises an electrolysis bath, and the electrolysis bath comprises an anode and a cathode.
Furthermore, the nickel collecting unit is a nickel sulfate collecting tank which is ventilated, cool and dry and can be used for storing nickel sulfate.
Furthermore, a stripping unit is arranged below the rotational flow electrolysis unit. The stripping unit is a copper collecting tank with a movable scraper.
The utility model has the beneficial effects that:
1. after the device is treated by the copper-nickel filtering and separating unit, the copper \ nickel sulfate can be recovered by the double lines, and the cyclone electrolysis unit has higher copper recovery capability. Therefore, the device can effectively recover copper and nickel sulfate.
2. According to the device disclosed by the utility model, the purity of the recovered copper is more than 98%; the purity of the recovered nickel sulfate is more than 85 percent.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic assembly view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a structurally exploded view of a second embodiment of the present invention;
in the figure: 1. a copper-nickel filtering and separating unit; 2. an evaporation concentration unit; 3. a nickel collection unit; 4. an ultrafiltration unit; 5. a cyclone electrolysis unit; 6. a stripping unit; 7. a water collection tank; 8. a bag filter; 9. a transit trough; 10. a wastewater tank; 11. an extraction tank; 12. a first exchange column; 13. a backwashing tank; 14. a second exchange column; 111. a feed inlet; 41. a nanofiltration membrane; 42. a reverse osmosis membrane; 51. an electrolytic cell; 511. an anode; 512. a cathode; 61. the squeegee is moved.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.
The device for recovering copper and nickel sulfate from electroplating wastewater described with reference to fig. 1-3 comprises a copper-nickel filtering and separating unit 1, an evaporation and concentration unit 2, a nickel collecting unit 3, an ultrafiltration unit 4 and a cyclone electrolysis unit 5, wherein one end of the copper-nickel filtering and separating unit 1 is connected to the evaporation and concentration unit 2, the other end of the copper-nickel filtering and separating unit 1 is connected to the ultrafiltration unit 4, and the ultrafiltration unit 4 is connected to the cyclone electrolysis unit 5;
separating copper and nickel sulfate in the electroplating wastewater in the copper-nickel filtering and separating unit 1;
in the utility model, the copper-nickel filtering and separating unit 1 comprises an extraction tank 11, a first exchange column 12, a backwashing tank 13 and a second exchange column 14, wherein a feed inlet 111 is arranged on the extraction tank 11, the top of the extraction tank 11 is connected to a transit tank 9, the bottom of the extraction tank 11 is connected to the first exchange column 12, the backwashing tank 13 is connected to the second exchange column 14, and the second exchange column 14 is connected to the ultrafiltration unit 4. Adding electroplating wastewater into an extraction tank 11, adding a copper extractant into a feed inlet 111 of the extraction tank 11, fully stirring, standing, and layering, wherein an organic layer contains copper and water contains nickel sulfate; the organic layer (upper layer, intermittent transfer or pipeline extraction) is transferred to a backwashing tank 13, and the aqueous layer is transferred to a first exchange column 12 for exchange treatment; the aqueous layer subjected to the exchange treatment was transferred to the evaporation concentration unit 2.
Carrying out backwashing operation (adding water, backwashing agent and the like) in the backwashing tank 13, standing after backwashing, and layering, wherein copper comes to a water layer; the aqueous layer is transferred to the second exchange column 14 for ion exchange treatment, and the aqueous layer after the ion exchange treatment is transferred to the ultrafiltration unit 4. The resulting organic layer is treated in a backwash tank 13 and may be discharged after treatment.
The electroplating wastewater is collected in an electroplating wastewater collecting tank 7, filtered by a bag filter 8 and then buffered in a transit tank 9. And (3) introducing the electroplating wastewater cached in the transfer tank 9 into the copper-nickel filtering and separating unit 1. Therefore, the copper-nickel filtering and separating unit 1 is connected to a transit tank 9, the transit tank 9 is connected to a bag filter 8, and the bag filter 8 is connected to an electroplating wastewater collecting tank.
In the utility model, the evaporation concentration unit 2 is an evaporation concentration pool, the temperature range is 35-45 ℃, and evaporated materials obtained after condensation in the evaporation concentration pool are transferred into the nickel collection unit 3.
In the present invention, the spiral-flow electrolysis unit 5 comprises an electrolysis bath 51, and the electrolysis bath 51 comprises an anode 511 and a cathode 512. The cyclone electrolysis unit 5 adopts a cyclone electrolysis technology, and based on the difference of theoretical precipitation potentials of metal ions, namely, if the metal to be extracted has a large potential difference with other metal ions in a solution system, the metal with the positive potential is easy to preferentially precipitate at the cathode 512, so that copper can be precipitated at the cathode 512 to obtain cathode copper.
In the utility model, the nickel collecting unit 3 is a nickel sulfate collecting tank which is ventilated, cool and dry and can be used for storing nickel sulfate.
In the utility model, the cyclone electrolysis unit 5 is connected to a stripping unit 6, namely, the stripping unit 6 is arranged below the cathode, the stripping unit 6 is a copper collecting tank with a movable scraper 61, the movable scraper 61 can move horizontally, the copper precipitated on the cathode 512 is scraped, and the copper precipitated on the cathode 512 is rapidly collected.
In the present invention, the ultrafiltration unit 4 includes a reverse osmosis membrane filter, the reverse osmosis membrane filter includes a nanofiltration membrane 41 and a reverse osmosis membrane 42, the concentration of the copper sulfate solution treated by the nanofiltration membrane 41 is increased, and wastewater is generated after the reverse osmosis membrane 42 is treated, and the wastewater can be introduced into the wastewater tank 10.
Specifically, when the device is used, the electroplating wastewater in the electroplating wastewater collecting tank is filtered by the bag filter and then enters the transit tank; introducing the electroplating wastewater in the transit tank into a copper-nickel filtering and separating unit, separating copper ions from nickel sulfate in the copper-nickel filtering and separating unit, treating the nickel sulfate by an evaporation and concentration unit, and storing in a nickel treatment unit; and the copper ions are treated by the ultrafiltration unit, copper is separated out on the cyclone electrolysis unit (multi-stage cyclone electrolysis can be designed), and the copper ions are scraped in the copper collecting tank.
Therefore, the device can simultaneously recycle copper \ nickel sulfate, and the purity of the recycled copper is more than 98%; the purity of the recovered nickel sulfate is more than 85 percent.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. The device for recovering copper and nickel sulfate from electroplating wastewater is characterized by comprising a copper-nickel filtering and separating unit (1), an evaporation and concentration unit (2), a nickel collecting unit (3), an ultrafiltration unit (4) and a cyclone electrolysis unit (5), wherein one end of the copper-nickel filtering and separating unit (1) is connected to the evaporation and concentration unit (2), the other end of the copper-nickel filtering and separating unit (1) is connected to the ultrafiltration unit (4), the ultrafiltration unit (4) is connected to the cyclone electrolysis unit (5), and the evaporation and concentration unit (2) is connected to the nickel collecting unit (3).
2. An apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, characterized in that the copper-nickel filtering and separating unit (1) is connected to a transit tank (9), the transit tank (9) is connected to a bag filter (8), and the bag filter (8) is connected to an electroplating wastewater collecting tank.
3. The device for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, wherein the copper-nickel filtering and separating unit (1) comprises an extraction tank (11), a first exchange column (12), a backwash tank (13) and a second exchange column (14), a feed inlet (111) is formed in the extraction tank (11), the top of the extraction tank (11) is connected to the intermediate transfer tank (9), the bottom of the extraction tank (11) is connected to the first exchange column (12), the backwash tank (13) is connected to the second exchange column (14), and the second exchange column (14) is connected to the ultrafiltration unit (4).
4. An apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, characterized in that the ultrafiltration unit (4) comprises a reverse osmosis membrane filter.
5. An apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, characterized in that the cyclone electrolysis unit (5) comprises an electrolysis cell (51), and the electrolysis cell (51) comprises an anode (511) and a cathode (512).
6. The apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, wherein the nickel collecting unit (3) is a nickel sulfate collecting tank.
7. The apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 1, wherein a stripping unit (6) is arranged below the cyclone electrolysis unit (5).
8. An apparatus for recovering copper and nickel sulfate from electroplating wastewater according to claim 7, characterized in that the stripping unit (6) is a copper collection tank with a moving scraper (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635232.2U CN216584596U (en) | 2021-10-28 | 2021-10-28 | Device for recovering copper and nickel sulfate from electroplating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635232.2U CN216584596U (en) | 2021-10-28 | 2021-10-28 | Device for recovering copper and nickel sulfate from electroplating wastewater |
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| CN216584596U true CN216584596U (en) | 2022-05-24 |
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| CN202122635232.2U Active CN216584596U (en) | 2021-10-28 | 2021-10-28 | Device for recovering copper and nickel sulfate from electroplating wastewater |
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2021
- 2021-10-28 CN CN202122635232.2U patent/CN216584596U/en active Active
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