A device for selectively ion exchanging and electrolytically recovering high-copper-containing waste liquid

Abstract

The utility model relates to electrolytic recovery technical field especially relates to a kind of high copper-containing waste liquid selective ion exchange and electrolytic recovery device, including support frame, electrolytic tank, filter tank, deployment box, liquid inlet pipe, first valve, chelate resin, flush pipe, second valve, liquid outlet pipe and third valve, electrolytic tank is installed on support frame, two filter tanks are installed on support frame, deployment box is fixedly connected on support frame, liquid inlet pipe is connected on filter tank, first valve is provided on liquid inlet pipe, chelate resin is provided in filter tank, flush pipe is connected on filter tank, second valve is provided on flush pipe, liquid outlet pipe is connected between filter tank and electrolytic tank, third valve is provided on liquid outlet pipe. By the base electrolyte in deployment box can pass through flow guide pipe, under the action of booster pump, it is supplemented to filter tank or electrolytic tank, to adjust solution composition and concentration.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic recovery technology, and in particular to a selective ion exchange and electrolytic recovery device for high copper content waste liquid. Background Technology

[0002] Electrolytic recovery of high-copper-content waste liquid is an advanced process that uses electrochemical principles to directly extract and recover metallic copper from industrial waste liquid with high copper ion concentration.

[0003] Patent CN209098830U discloses a copper recovery system for wastewater discharge. It includes: a collection tank for collecting copper-containing wastewater; a filtration device for filtering out visible impurities from the copper-containing wastewater; and an electrolysis device for electrolyzing the copper-containing wastewater to precipitate copper. The collection tank, filtration device, and electrolysis device are connected in sequence. Using this patent, the copper recovery system, consisting of the collection tank, filtration device, and electrolysis device, achieves electrolytic copper recovery. However, when using the aforementioned existing patent, the wastewater, after entering and being filtered, directly enters the electrolysis tank. As electrolysis proceeds, the copper ion concentration in the electrolysis tank rapidly decreases. When the concentration falls below a certain level, mass transfer becomes the rate-controlled step, and the current efficiency drops sharply. Most of the electrical energy is wasted on water decomposition rather than copper deposition, resulting in extremely high energy consumption.

[0004] Therefore, there is a need for a selective ion exchange and electrolytic recovery device for high copper-containing wastewater that can adjust the solution composition and concentration. Utility Model Content

[0005] To overcome the shortcomings of existing patents, where waste liquid enters directly into the electrolytic cell after filtration, and the copper ion concentration in the electrolytic cell rapidly decreases as electrolysis proceeds, and when the concentration falls below a certain level, mass transfer becomes the rate-controlled step, current efficiency drops sharply, and most electrical energy is wasted on water decomposition rather than copper deposition, resulting in extremely high energy consumption, this invention provides a selective ion exchange and electrolytic recovery device for high copper-containing waste liquid that can adjust the solution composition and concentration.

[0006] To address the aforementioned problems, this utility model adopts the following technical solution: a selective ion exchange and electrolytic recovery device for high copper-content waste liquid, comprising a support frame, an electrolysis tank, a filter tank, a mixing tank, an inlet pipe, a first valve, chelating resin, a rinsing pipe, a second valve, an outlet pipe, and a third valve. The electrolysis tank is mounted on the support frame, two filter tanks are mounted on the support frame, the mixing tank is fixedly connected to the support frame, an inlet pipe is connected to the filter tank, the inlet pipe is equipped with a first valve, chelating resin is disposed inside the filter tank, a rinsing pipe is connected to the filter tank, the rinsing pipe is equipped with a second valve, an outlet pipe is connected between the filter tank and the electrolysis tank, the outlet pipe is equipped with a third valve, and the device also includes a guide pipe, a fourth valve, a booster pump, a connecting pipe, and a pipeline pump. The guide pipe connects the filter tank and the mixing tank, the guide pipe is equipped with a fourth valve, the booster pump is mounted on the guide pipe, and the pipeline pump is mounted on the electrolysis tank, with a connecting pipe connected to the pipeline pump.

[0007] Furthermore, it is particularly preferred that the device also includes a mounting rack, electrode plates, and terminals. Four mounting racks are fixedly connected to the electrolysis tank, and electrode plates are mounted on the mounting racks, with terminals mounted on the electrode plates.

[0008] Furthermore, it is particularly preferred that the mixture also includes a three-way pipe, a piston, a connecting seat, a lever, and a hollow float. The mixing box is provided with a three-way pipe, the piston is slidably installed inside the three-way pipe, the connecting seat is fixedly connected to the three-way pipe, the lever is rotatably installed on the connecting seat, the hollow float is installed on the lever, and the piston has a groove.

[0009] In addition, it is particularly preferred that the support plate is also included, and the support plate is fixedly connected to the support frame.

[0010] Furthermore, it is particularly preferred that the connecting tube is shaped like a 7.

[0011] Furthermore, it is particularly preferred that the edges of the support plate have beveled.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. The basic electrolyte in the mixing tank can be supplemented to the filter tank or electrolysis tank through the guide pipe under the action of the booster pump to adjust the solution composition and concentration.

[0013] 2. By connecting an external DC power supply through the terminals, current is introduced into the electrode plates, establishing an electric field in the electrolysis tank. Positively charged copper ions migrate towards the cathode under the action of the electric field, gain electrons on the cathode surface, and are reduced to metallic copper and deposited, thereby achieving efficient recovery of copper from the solution.

[0014] 3. When the liquid level is too low, the float descends and the piston moves to open the liquid inlet channel to replenish fresh electrolyte. When the liquid level reaches the set height, the float rises and the piston moves to close the liquid inlet channel. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional sectional view of the electrolysis tank, filter tank, and booster pump of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the placement rack, electrode plate, and terminal block of this utility model.

[0018] Figure 4 This is a three-dimensional sectional view of the mixing box, connecting pipe, and tee pipe of this utility model.

[0019] Figure 5 This is an exploded view of the three-way pipe, piston, and lever of this utility model.

[0020] The above-mentioned attached drawings include the following reference numerals: 1. Support frame, 2. Electrolysis tank, 3. Filter tank, 4. Mixing tank, 5. Inlet pipe, 6. First valve, 7. Chelating resin, 8. Flushing pipe, 9. Second valve, 10. Outlet pipe, 11. Third valve, 12. Guide pipe, 13. Fourth valve, 14. Booster pump, 1401. Connecting pipe, 1402. Pipeline pump, 15. Placement rack, 16. Electrode plate, 17. Terminal block, 18. T-junction, 19. Piston, 20. Groove, 21. Connecting seat, 22. Lever, 23. Hollow float, 24. Support plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0022] Example 1: A selective ion exchange and electrolytic recovery device for high copper content wastewater, see reference. Figure 1 , Figure 2 and Figure 4As shown, the system includes a support frame 1, an electrolysis tank 2, a filter tank 3, a mixing tank 4, an inlet pipe 5, a first valve 6, a chelating resin 7, a flushing pipe 8, a second valve 9, an outlet pipe 10, and a third valve 11. The electrolysis tank 2 is mounted on the top of the support frame 1. The filter tank 3 is symmetrically mounted on the left side of the top of the support frame 1. The mixing tank 4 is welded to the right side of the top of the support frame 1. The inlet pipe 5 is connected to the filter tank 3, and the first valve 6 is installed on the inlet pipe 5. The chelating resin 7 is placed inside the filter tank 3. The flushing pipe 8 is connected to the top of the filter tank 3. A second valve 9 is provided. A liquid outlet pipe 10 is connected between the filter tank 3 and the electrolysis tank 2. A third valve 11 is provided on the liquid outlet pipe 10. The system also includes a guide pipe 12, a fourth valve 13, a booster pump 14, a connecting pipe 1401, and a pipeline pump 1402. A guide pipe 12 is connected between the filter tank 3 and the mixing tank 4. A fourth valve 13 is provided on the guide pipe 12. A booster pump 14 is provided on the guide pipe 12. A pipeline pump 1402 is installed on the electrolysis tank 2. A connecting pipe 1401 is connected to the pipeline pump 1402 and the connecting pipe 1401 is connected to the mixing tank 4.

[0023] See Figure 4 As shown, the connecting pipe 1401 is shaped like a 7.

[0024] See Figure 1 As shown, it also includes a support plate 24. The support plate 24 is fixedly connected to the bottom of the support frame 1, and the support plate 24 increases the contact area between the entire device and the ground.

[0025] See Figure 1 As shown, the support plate 24 has chamfered edges.

[0026] When using this device, the high-copper-content waste liquid, after pre-filtration and pH adjustment, enters the filter tank 3 through the inlet pipe 5. The Cu in the waste liquid... 2+ The copper is selectively adsorbed by the chelating resin 7, while most other heavy metal ions and impurity ions permeate and flow out, achieving the separation and enrichment of copper. After adsorption saturation, the first valve 6 can be closed and the second valve 9 can be opened to introduce a sulfuric acid solution with a concentration of 1.5-3 mol / L as a regenerator to elute the resin. The low-volume, high-concentration copper sulfate solution produced by elution is collected in the outlet pipe 10. Subsequently, the third valve 11 and the pipeline pump 1402 are opened to pump the copper-rich eluent into the electrolysis tank 2. At the same time, the basic electrolyte in the mixing tank 4 can be supplemented to the filter tank 3 or the electrolysis tank 2 through the guide pipe 12 under the action of the booster pump 14 to adjust the solution composition and concentration. In the electrolysis tank 2, copper ions are reduced to metallic copper at the cathode under the action of the electric field, achieving recovery.

[0027] Example 2: Based on Example 1, refer to Figure 2 and Figure 3As shown, it also includes a placement rack 15, an electrode plate 16, and a terminal block 17. The left and right sides of the electrolysis box 2 are both equipped with placement racks 15 by bolt connection. The electrode plate 16 is installed on the placement rack 15, and the terminal block 17 is installed on the top of the electrode plate 16.

[0028] During electrolysis, terminal 17 is connected to an external DC power supply, which guides current into electrode 16, establishing an electric field within the electrolysis tank 2. Positively charged copper ions migrate towards the cathode under the influence of the electric field, gain electrons on the cathode surface, and are reduced to metallic copper, which is then deposited, thus achieving efficient recovery of copper from the solution.

[0029] See Figure 2 , Figure 4 and Figure 5 As shown, it also includes a three-way pipe 18, a piston 19, a connecting seat 21, a lever 22, and a hollow float 23. The mixing box 4 is provided with a three-way pipe 18 at the front, and the piston 19 is slidably arranged inside the three-way pipe 18. The connecting seat 21 is fixedly connected to the rear of the three-way pipe 18. The lever 22 is rotatably arranged on the connecting seat 21. The bottom end of the lever 22 is provided with a hollow float 23. The piston 19 has a groove 20. The lever 22 rotates in the groove 20, and while rotating, it moves the piston 19.

[0030] When the liquid level in the mixing tank 4 changes, the hollow float 23 floats up and down with the liquid level in the mixing tank 4. The vertical motion is converted into rotational motion by the lever 22. The end of the lever 22 rotates in the groove 20 of the piston 19 and moves the piston 19 horizontally in the three-way pipe 18. When the liquid level is too low, the float descends and the piston 19 moves to open the liquid inlet channel to replenish fresh electrolyte. When the liquid level reaches the set height, the float rises and the piston 19 moves to close the liquid inlet channel.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A selective ion exchange and electrolytic recovery device for high copper content waste liquid, comprising a support frame (1), an electrolysis tank (2), a filter tank (3), a mixing tank (4), an inlet pipe (5), a first valve (6), a chelating resin (7), a rinsing pipe (8), a second valve (9), an outlet pipe (10), and a third valve (11), wherein the electrolysis tank (2) is mounted on the support frame (1), two filter tanks (3) are mounted on the support frame (1), the mixing tank (4) is fixedly connected to the support frame (1), the inlet pipe (5) is connected to the filter tank (3), the first valve (6) is provided on the inlet pipe (5), the chelating resin (7) is provided inside the filter tank (3), the rinsing pipe (8) is connected to the filter tank (3), the second valve (9) is provided on the rinsing pipe (8), the outlet pipe (10) is connected between the filter tank (3) and the electrolysis tank (2), and the third valve (11) is provided on the outlet pipe (10), characterized in that, It also includes a guide pipe (12), a fourth valve (13), a booster pump (14), a connecting pipe (1401), and a pipeline pump (1402). The filter tank (3) and the mixing box (4) are connected by a guide pipe (12). A fourth valve (13) is installed on the guide pipe (12). A booster pump (14) is installed on the guide pipe (12). A pipeline pump (1402) is installed on the electrolysis box (2). A connecting pipe (1401) is connected to the pipeline pump (1402).

2. The selective ion exchange and electrolytic recovery device for high copper-content wastewater as described in claim 1, characterized in that, It also includes a placement rack (15), an electrode plate (16) and a terminal block (17). Four placement racks (15) are fixedly connected to the electrolysis box (2). An electrode plate (16) is provided on the placement rack (15) and a terminal block (17) is provided on the electrode plate (16).

3. The selective ion exchange and electrolytic recovery device for high copper-content wastewater as described in claim 2, characterized in that, It also includes a three-way pipe (18), a piston (19), a connecting seat (21), a lever (22), and a hollow float (23). The mixing box (4) is provided with a three-way pipe (18), and a piston (19) is slidably provided inside the three-way pipe (18). A connecting seat (21) is fixedly connected to the three-way pipe (18), and a lever (22) is rotatably provided on the connecting seat (21). A hollow float (23) is provided on the lever (22), and a groove (20) is opened on the piston (19).

4. The selective ion exchange and electrolytic recovery device for high copper-content wastewater as described in claim 3, characterized in that, It also includes a support plate (24), which is fixedly connected to the support frame (1).

5. The selective ion exchange and electrolytic recovery device for high copper-content wastewater as described in claim 4, characterized in that, The connecting tube (1401) is shaped like a 7.

6. The selective ion exchange and electrolytic recovery device for high copper-content wastewater as described in claim 5, characterized in that, The edges of the support plate (24) are chamfered.

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