Copper-nickel recovery and water reuse system for plating line

Abstract

The utility model provides a copper nickel recovery and water reuse system for plating line, including washing subassembly, first collecting tank, second collecting tank, filter subassembly, washing subassembly through first pipeline and first collecting tank intercommunication, rinse waste water flows into first collecting tank, first collecting tank and filter subassembly through second pipeline intercommunication, second collecting tank and filter subassembly through second pipeline intercommunication. A first conveying pump is further arranged on the second pipeline and used for conveying rinsing wastewater to the filtering assembly, the filtering assembly is provided with a clear water outlet and a concentrated water outlet, the clear water outlet is communicated with the washing assembly through a third pipeline, so that water recycling is achieved, and the concentrated water outlet is communicated with the second collecting tank through a fourth pipeline; the second collecting tank is communicated with the electroplating main tank through a fifth pipeline, a second conveying pump is arranged on the fifth pipeline, and the second conveying pump conveys concentrated water containing metal ions into the electroplating main tank along the fifth pipeline, so that the metal ions are recycled. The system can realize recovery of metal ions and reuse of rinsing wastewater.

Description

Technical Field

[0001] This utility model belongs to the technical field of metal recycling, specifically relating to a copper-nickel recycling and water reuse system for electroplating lines. Background Technology

[0002] Electroplating lines generate large amounts of electroplating wastewater and rinsing wastewater during the electroplating process. This wastewater contains harmful substances such as heavy metal ions, acidic and alkaline substances, and organic pollutants. Direct discharge without treatment will cause long-term environmental pollution. By recovering metal ions from the wastewater and reusing the rinsing water, the wastewater can be converted into reusable non-potable water, effectively reducing the total amount of pollutants discharged. This aligns with the concept of green and sustainable development, helps alleviate the imbalance between water supply and demand, and improves the quality of the ecological environment.

[0003] In existing technologies, water recycling and copper-nickel metal recovery mostly adopt the resin adsorption method of ion exchange, which requires acid and alkali rinsing. This can lead to the incomplete removal of Na+ ions from metal salts, which will affect the quality of electroplated surfaces. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing a copper-nickel recovery and water reuse system for electroplating lines. The copper-nickel recovery and water reuse system can effectively realize the recovery of metal ions and the reuse of rinsing wastewater.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A copper-nickel recovery and water reuse system for an electroplating line includes a washing assembly, a first collection tank, a second collection tank, and a filtration assembly. The washing assembly is used to clean the workpiece after electroplating and is connected to the first collection tank via a first pipe. Rinse wastewater flows into the first collection tank through the first pipe. The first collection tank is connected to the filtration assembly via a second pipe, and the second pipe also has a first transfer pump for transporting the rinsing wastewater to the filtration assembly. The filtration assembly has a clean water outlet and a concentrated water outlet. The clean water outlet is connected to the washing assembly via a third pipe, thereby realizing water recycling. The concentrated water outlet is connected to the second collection tank via a fourth pipe. The second collection tank is connected to the main electroplating tank via a fifth pipe, and the fifth pipe is equipped with a second transfer pump for transporting concentrated water containing metal ions along the fifth pipe to the main electroplating tank to achieve the reuse of metal ions.

[0007] Preferably, the water washing assembly includes multiple water washing tanks arranged in parallel, and the overflow height of the water washing tanks away from the main electroplating tank is higher than that of the water washing tanks near the main electroplating tank. Adjacent water washing tanks are connected by an overflow pipe, and the water in the water washing tanks away from the main electroplating tank flows sequentially toward the water washing tanks near the main electroplating tank.

[0008] Preferably, the outlet of the second pipe is connected to the washing tank furthest from the electroplating tank.

[0009] Preferably, the copper-nickel recovery and water reuse system further includes a water supply pipe, one end of which is connected to a clean water source, and the other end is connected to a washing tank furthest from the electroplating tank.

[0010] Preferably, a first valve is provided on the second pipeline, the first valve being located between the first collection tank and the first delivery pump. The filtration assembly includes a security filter and a nanofiltration membrane filter, both of which are installed on the second pipeline. The security filter is located between the first delivery pump and the nanofiltration membrane filter and is used to filter out impurities with a diameter of 5 μm or more. The clean water outlet and the concentrated water outlet are both located on the nanofiltration membrane filter. The nanofiltration membrane filter contains a nanofiltration membrane, which can prevent metal ions from passing through. The clean water that permeates through the nanofiltration membrane is discharged from the clean water outlet, and the concentrated water containing metal ions is discharged from the concentrated water outlet.

[0011] Preferably, the second collection tank is also connected to the first node via a seventh pipe and the second pipe, and a second valve is provided on the seventh pipe.

[0012] Preferably, the copper-nickel recovery and water reuse system further includes a cleaning component, which includes a CIP cleaner. The CIP cleaner is connected to the nanofiltration membrane filter via an eighth pipe. A third delivery pump is installed on the eighth pipe. The nanofiltration membrane filter is also connected to the CIP cleaner via a ninth pipe. The cleaning water from the CIP cleaner enters the nanofiltration membrane filter through the eighth pipe, and the wastewater generated during rinsing is discharged to the CIP cleaner through the ninth pipe.

[0013] Preferably, the copper-nickel recovery and water reuse system further includes a control component, which includes a controller and a water quality monitoring sensor. The water quality monitoring sensor is installed on the third pipeline and electrically connected to the controller. When the water quality monitoring sensor detects that the conductivity concentration of the clean water in the third pipeline exceeds 200 μS / cm, it will send a first signal to the controller. The controller is also electrically connected to the CIP cleaner and is used to control the CIP cleaner to start after receiving the first signal.

[0014] Preferably, the control component further includes a concentration monitoring sensor, which is disposed in the second collection tank to detect the concentration of the concentrated water in the second collection tank and is electrically connected to the controller. When the concentration in the second collection tank reaches 10000 μS / cm, the concentration monitoring sensor sends a second signal to the controller. The controller is also electrically connected to the second delivery pump to control the second delivery pump to start after receiving the second signal, thereby delivering the concentrated water to the electroplating main tank.

[0015] Preferably, in the copper-nickel recovery and water reuse system, the first collection tank and the second collection tank are arranged in the same trough-shaped container, separated by a partition plate, and the height of the partition plate is lower than the height of the side wall of the trough-shaped container.

[0016] The copper-nickel recovery and water reuse system for electroplating lines in this invention involves rinsing the electroplated workpieces in a water washing assembly. The wastewater containing heavy metal ions after rinsing enters the first collection tank, where a filtration assembly separates the clean water from the concentrated water containing metal ions. The filtered clean water re-enters the water washing assembly, while the wastewater containing heavy metal ions is reused in the main electroplating tank. This effectively achieves the recovery of metal ions and the reuse of water resources without requiring complex pretreatment steps. It can significantly reduce the material costs in electroplating production, while increasing enterprise revenue and improving economic efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the copper-nickel recovery and water reuse system for electroplating lines in Embodiment 1 of this utility model.

[0018] In the diagram: 100-First washing tank, 110-Second washing tank, 120-Third washing tank, 130-First pipe, 131-Second node, 132-Drainage branch pipe, 140-Water supply pipe, 200-First collection tank, 210-Second collection tank, 220-Second pipe, 230-First transfer pump, 240-Seventh pipe, 241-First node, 250-Second transfer pump, 260-First valve, 270-Second valve, 280-Third valve, 290-Fourth valve, 300-Security filter, 310-Nanofiber membrane filter, 320-Third pipe, 330-Fourth pipe, 340-Fifth pipe, 400-Electroplating main tank, 500-CIP cleaner, 510-Eighth pipe, 520-Ninth pipe, 530-Third transfer pump, 600-Water quality monitoring sensor, 610-Concentration monitoring sensor. Detailed Implementation

[0019] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] This utility model provides a copper-nickel recovery and water reuse system for electroplating lines, including a water washing component, a first collection tank, a second collection tank, and a filter component. The water washing component is used to clean the workpiece after electroplating, and is connected to the first collection tank through a first pipe. Rinsing wastewater flows into the first collection tank through the first pipe. The first collection tank is connected to the filter component through a second pipe, and the second pipe also has a first delivery pump, which is used to deliver the rinsing wastewater to the filter component. The filter component has a clean water outlet and a concentrated water outlet. The clean water outlet is connected to the water washing component through a third pipe, thereby realizing water recycling. The concentrated water outlet is connected to the second collection tank through a fourth pipe. The second collection tank is connected to the main electroplating tank through a fifth pipe, and the fifth pipe is equipped with a second delivery pump, which is used to deliver concentrated water containing metal ions along the fifth pipe to the main electroplating tank to realize the reuse of metal ions.

[0024] Example 1

[0025] like Figure 1As shown, this embodiment discloses a copper-nickel recovery and water reuse system for electroplating lines, including a water washing assembly, a first collection tank 200, a second collection tank 210, and a filter assembly. The water washing assembly is used to clean the workpiece after electroplating. The water washing assembly is connected to the first collection tank 200 through the first pipe 130. The rinsing wastewater flows into the first collection tank 200 through the first pipe 130. The first collection tank 200 is connected to the filter assembly through the second pipe 220. The second pipe 220 is also equipped with a first transfer pump 230, which is used to transport the rinsing wastewater to the filter assembly. The filter assembly has a clean water outlet and a concentrated water outlet. The clean water outlet is connected to the water washing assembly through the third pipe 320, thereby realizing the recycling of water. The concentrated water outlet is connected to the second collection tank 210 through the fourth pipe 330. The second collection tank 210 is connected to the electroplating main tank 400 through the fifth pipe 340. The fifth pipe 340 is equipped with a second transfer pump 250, which is used to transport the concentrated water containing metal ions (mainly copper and nickel ions) along the fifth pipe 340 into the electroplating main tank 400, so as to realize the reuse of metal ions.

[0026] In this embodiment, the washing assembly includes multiple washing tanks arranged in parallel, and the overflow height of the washing tanks farther away from the main electroplating tank 400 is higher than that of the washing tanks closer to the main electroplating tank 400. That is, the overflow height decreases sequentially from the farthest washing tank toward the nearest washing tank. Adjacent washing tanks are connected by an overflow pipe, and the water in the washing tanks farther away from the main electroplating tank 400 (the farthest washing tank) flows sequentially toward the washing tanks closer to the main electroplating tank 400 (the washing tank closest to the main electroplating tank 400).

[0027] Specifically, the outlet of the second pipe 220 is connected to the water washing tank furthest from the electroplating tank (the furthest water washing tank), thereby realizing the recycling of water resources. In addition, the furthest water washing tank is equipped with a water supply pipe 140 in addition to the circulating clean water from the second pipe 220. One end of the water supply pipe 140 is connected to a clean water source, and the other end is connected to the furthest water washing tank, thereby ensuring that the water washing assembly has a sufficient source of clean water and ensuring the water quality within the water washing assembly.

[0028] In this embodiment, the water washing assembly includes three water washing tanks: a first water washing tank 100, a second water washing tank 110, and a third water washing tank 120. The first water washing tank 100 is furthest from the main electroplating tank 400, the third water washing tank 120 is closest to the main electroplating tank 400, and the second water washing tank 110 is located between the first water washing tank 100 and the third water washing tank 120. The overflow heights of the first water washing tank 100, the second water washing tank 110, and the third water washing tank 120 decrease sequentially.

[0029] Specifically, after electroplating in the main electroplating tank 400, the workpiece is sequentially placed into the third rinsing tank 120, the second rinsing tank 110, and the first rinsing tank 100 for rinsing. Due to the overflow height difference, water in the first rinsing tank 100 and the second rinsing tank 110 overflows into the third rinsing tank 120, which is connected to the first collection tank 200 via the first pipe 130. Due to the overflow height difference and the rinsing sequence, the ion concentration in the third collection tank is the highest, and the wastewater containing ions enters the first collection tank 200.

[0030] like Figure 1 As shown, a first valve 260 is provided on the second pipeline 220. The first valve 260 is located between the first collection tank 200 and the first delivery pump 230. The filtration assembly includes a security filter 300 and a nanofiltration membrane filter 310. Both the security filter 300 and the nanofiltration membrane filter 310 are installed on the second pipeline 220, and the security filter 300 is located between the first delivery pump 230 and the nanofiltration membrane filter 310. It is used to filter out impurities with a diameter of 5μm or more. The clean water outlet and the concentrated water outlet are both located on the nanofiltration membrane filter 310. The nanofiltration membrane filter 310 contains a nanofiltration membrane, which can prevent metal ions from passing through. The clean water that passes through the nanofiltration membrane is discharged from the clean water outlet, and the concentrated water containing metal ions is discharged from the concentrated water outlet.

[0031] The nanofiltration membrane is a low-pressure, acid- and alkali-resistant nanofiltration membrane. Its main materials include, but are not limited to, polyamide (PA) as the main component of the separation layer. The polyamide layer provides good chemical stability and mechanical strength, especially with good adaptability to operating environments under low pH conditions. The nanofiltration membrane's properties are expressed by its desalination rate, selectively permeating and stripping metal salt ions from wastewater. This particular nanofiltration membrane has a standard desalination rate of 99%.

[0032] Furthermore, the second collection tank 210 is also connected to the second pipe 220 via the seventh pipe 240 to the first node 241, the first node 241 being located between the first valve 260 and the first delivery pump 230, and the seventh pipe 240 is provided with a second valve 270.

[0033] In this embodiment, the copper-nickel recovery and water reuse system also includes a cleaning component, which includes a CIP cleaner 500. The CIP cleaner 500 is connected to the nanofiltration membrane filter 310 via an eighth pipe 510. A third transfer pump 530 is installed on the eighth pipe 510. The nanofiltration membrane filter 310 is also connected to the CIP cleaner 500 via a ninth pipe 520. The CIP cleaner 500 is also equipped with a pure water inlet and a drain outlet. External pure water enters the CIP cleaner 500 through the pure water inlet. After adding pure water to the CIP cleaner 500, a suitable cleaning agent is added to facilitate the rinsing and cleaning of the nanofiltration membrane. Then, under the action of the third transfer pump 530, the water enters the nanofiltration membrane filter 310 through the eighth pipe 510, thereby rinsing the inside of the nanofiltration membrane filter 310. The wastewater generated from rinsing is discharged from the ninth pipe 520 to the CIP cleaner 500, and finally discharged from the drain outlet of the CIP cleaner 500.

[0034] Optionally, the copper-nickel recovery and water reuse system also includes a control component, which includes a controller and a water quality monitoring sensor 600. The water quality monitoring sensor 600 is installed on the third pipe 320 and electrically connected to the controller. When the water quality monitoring sensor 600 detects that the conductivity concentration of the clean water in the third pipe 320 exceeds 200 μS / cm (200 micro Siemens / cm), it will send a first signal to the controller. The controller is also electrically connected to the CIP cleaner 500 and, upon receiving the first signal, controls the CIP cleaner 500 to start to clean the inside of the nanofiltration membrane filter 310.

[0035] The control assembly also includes a concentration monitoring sensor 610, which is installed in the second collection tank 210 to detect the concentration of the concentrated water in the second collection tank 210 and is electrically connected to the controller. When the concentration in the second collection tank 210 reaches 10000 μS / cm, the concentration monitoring sensor 610 sends a second signal to the controller. The controller is also electrically connected to the second delivery pump 250 to control the second delivery pump 250 to start after receiving the second signal, thereby delivering the concentrated water to the electroplating main tank 400.

[0036] In this embodiment, the first collection tank 200 and the second collection tank 210 are arranged in the same tank-shaped container, separated by a partition plate, the height of which is lower than the height of the side wall of the tank-shaped container. The concentrated water from the second collection tank 210 can pass over the partition plate into the first collection tank 200 (the liquid level in the second collection tank 210 is higher than the liquid level in the first collection tank 200). During the operation of this system, concentrated water is continuously generated. After flowing into the second collection tank 210, the concentrated water overflows into the first collection tank 200. Because the metal ion concentration in the first collection tank 200 is relatively low, increasing the metal ion concentration solely through nanofiltration of the wastewater in the first collection tank 200 would take a very long time. Therefore, overflowing the concentrated water into the desalination collection tank shortens the separation and concentration time, thereby increasing the metal ion concentration in the first collection tank 200 and thus reducing the time required for the filtration component to concentrate the concentrated water.

[0037] like Figure 1 As shown, furthermore, a third valve 280 is provided at the outlet end of the first pipe 130. A drainage branch pipe 132 is also provided on the first pipe 130, connecting to the first pipe 130 at the second node 131. The third valve 280 is located between the second node 131 and the outlet of the first pipe 130. A fourth valve 290 is also provided at the outlet end of the drainage branch pipe 132, connecting to the main wastewater pipe. The first valve 260, second valve 270, third valve 280, and fourth valve 290 are all electric valves and electrically connected to the controller. The specific working process of the copper-nickel recovery and water reuse system for the electroplating line in this embodiment is as follows:

[0038] The electroplated workpieces are sequentially placed into the third water washing tank 120, the second water washing tank 110, and the first water washing tank 100 for rinsing.

[0039] Open the third valve 280, and the wastewater in the third washing tank 120 flows into the first collection tank 200 through the first pipe 130. Open the first valve 260 and the first transfer pump 230, and the wastewater passes through the security filter 300 and the nanofiltration membrane filter 310 in sequence. The separated clean water flows back to the first washing tank 100 along the third pipe 320, and the separated wastewater containing metal ions enters the second collection tank 210 along the fourth pipe 330.

[0040] After running for a period of time (when the concentration monitoring sensor 610 in the second collection tank 210 detects that the concentration has reached the set 3000 μS / cm), the first valve 260 is closed and the second valve 270 is opened. The above steps are repeated continuously by the first transfer pump 230 to continuously concentrate the concentrated water containing metal ions in the second collection tank 210. When the concentration monitoring sensor 610 detects that the concentration of the concentrated water in the second collection tank 210 has reached 10000 μS / cm, the second transfer pump 250 is started to transport the concentrated water in the second collection tank 210 to the electroplating main tank 400, so as to realize the recycling of copper and nickel ions and reduce the dosing cost of the electroplating main tank 400.

[0041] After the filtration assembly has been running for a certain period of time, in order to prevent the nanofiltration membrane element from being contaminated and clogged, the controller will close the first valve 260 and the third valve 280, and open the fourth valve 290 to discharge the rinsing wastewater overflowing from the third water washing tank 120 into the wastewater main pipe, and stop the first transfer pump 230. Then, the CIP cleaner 500 online cleaning function will be started. After rinsing for a period of time, the controller will close the fourth valve 290 and open the first valve 260, the third valve 280 and the first transfer pump 230 to start nanofiltration operation.

[0042] During CIP cleaning, the water supply pipe 140 needs to be opened to replenish clean water to meet the normal rinsing requirements of the production line. When performing nanofiltration reuse, the water supply pipe 140 should be closed.

[0043] When the water quality monitoring sensor 600 detects that the conductivity concentration of the clean water in the third pipe 320 exceeds 200 μS / cm, it will send a first signal to the controller. The controller is also electrically connected to the CIP cleaner 500 and is used to control the CIP cleaner 500 to start after receiving the first signal in order to clean the nanofiltration membrane inside the nanofiltration membrane filter 310.

[0044] It is worth noting that the values ​​of 200, 3000, and 10000 μS / cm shown here are not fixed values, but can be adjusted according to actual needs.

[0045] The copper-nickel recovery and water reuse system for electroplating lines in this embodiment places the electroplated workpieces into a water washing assembly for rinsing. The wastewater containing heavy metal ions after rinsing enters the first collection tank 200, and the clean water and concentrated water containing metal ions are separated by a filtration assembly. The filtered clean water re-enters the water washing assembly, while the wastewater containing heavy metal ions re-enters the main electroplating tank 400 for reuse. This effectively realizes the recovery of metal ions and the reuse of water resources, and does not require complicated pretreatment steps. It can significantly reduce the material costs in electroplating production, while increasing enterprise revenue and improving economic efficiency. This embodiment utilizes a suitable nanofiltration membrane to selectively separate copper and nickel ions from other substances in wastewater, achieving copper and nickel recovery and reuse of the permeate. This results in a 40% reduction in water loss, a nickel salt recovery rate exceeding 90%, and a 10% saving in nickel resources. The system features a compact structure, small footprint, relatively simple operation, and no need for complex pretreatment steps. It can significantly reduce material costs in electroplating production, while increasing enterprise revenue and improving economic efficiency.

[0046] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A copper-nickel recovery and water reuse system for electroplating lines, characterized in that, Includes a water washing assembly, a first collection tank (200), a second collection tank (210), and a filter assembly. The water washing assembly is used to clean the workpiece after electroplating, and the water washing assembly is connected to the first collection tank (200) through the first pipe (130). The rinsing wastewater flows into the first collection tank (200) through the first pipe (130). The first collection tank (200) is connected to the filter assembly via a second pipe (220). A first delivery pump (230) is also mounted on the second pipe (220) to deliver the rinsing wastewater to the filter assembly. The filter assembly has a clean water outlet and a concentrated water outlet. The clean water outlet is connected to the water washing assembly via a third pipe (320) to achieve water recycling. The concentrated water outlet is connected to the second collection tank (210) via a fourth pipe (330). The second collection tank (210) is connected to the electroplating main tank (400) through the fifth pipe (340), and the fifth pipe (340) is equipped with a second delivery pump (250). The second delivery pump (250) is used to deliver concentrated water containing metal ions along the fifth pipe (340) to the electroplating main tank (400) so as to realize the reuse of metal ions.

2. The copper-nickel recovery and water reuse system for electroplating lines according to claim 1, characterized in that, The washing assembly includes multiple washing tanks arranged in parallel, and the overflow height of the washing tanks away from the main electroplating tank (400) is higher than that of the washing tanks near the main electroplating tank (400). Two adjacent washing tanks are connected by an overflow pipe, and the water in the washing tanks away from the main electroplating tank (400) flows sequentially toward the washing tanks near the main electroplating tank (400).

3. The copper-nickel recovery and water reuse system for electroplating lines according to claim 2, characterized in that, The outlet of the second pipe (220) is connected to the washing tank furthest from the electroplating tank.

4. The copper-nickel recovery and water reuse system for electroplating lines according to claim 3, characterized in that, It also includes a water supply pipe (140), one end of which is connected to a clean water source and the other end is connected to a washing tank furthest from the electroplating tank.

5. The copper-nickel recovery and water reuse system for electroplating lines according to claim 1, characterized in that, The second pipeline (220) is equipped with a first valve (260), which is located between the first collection tank (200) and the first delivery pump (230). The filtration assembly includes a security filter (300) and a nanofiltration membrane filter (310). Both the security filter (300) and the nanofiltration membrane filter (310) are disposed on the second pipe (220), and the security filter (300) is located between the first delivery pump (230) and the nanofiltration membrane filter (310) to filter out impurities with a diameter of 5 μm or larger. Both the clear water outlet and the concentrated water outlet are located on the nanofiltration membrane filter (310). The nanofiltration membrane filter (310) contains a nanofiltration membrane, which can prevent metal ions from passing through. The clear water that passes through the nanofiltration membrane is discharged from the clear water outlet, and the concentrated water containing metal ions is discharged from the concentrated water outlet.

6. The copper-nickel recovery and water reuse system for electroplating lines according to claim 5, characterized in that, The second collection tank (210) is also connected to the second pipe (220) via a seventh pipe (240) at the first node (241), and a second valve (270) is provided on the seventh pipe (240).

7. The copper-nickel recovery and water reuse system for electroplating lines according to claim 6, characterized in that, It also includes a cleaning assembly, which includes a CIP cleaner (500). The CIP cleaner (500) is connected to the nanofiltration membrane filter (310) via an eighth pipe (510), and a third delivery pump (530) is provided on the eighth pipe (510). The nanofiltration membrane filter (310) is also connected to the CIP cleaner (500) through a ninth pipe (520). The cleaning water from the CIP cleaner (500) enters the nanofiltration membrane filter (310) through an eighth pipe (510), and the wastewater generated during rinsing is discharged to the CIP cleaner (500) through the ninth pipe (520).

8. The copper-nickel recovery and water reuse system for electroplating lines according to claim 7, characterized in that, It also includes a control component, which includes a controller and a water quality monitoring sensor (600). The water quality monitoring sensor (600) is installed on the third pipe (320) and electrically connected to the controller. When the water quality monitoring sensor (600) detects that the conductivity concentration of the clean water in the third pipe (320) exceeds 200 μS / cm, it will send a first signal to the controller. The controller is also electrically connected to the CIP cleaner (500) and is used to control the CIP cleaner (500) to start upon receiving a first signal.

9. The copper-nickel recovery and water reuse system for electroplating lines according to claim 8, characterized in that, The control component further includes a concentration monitoring sensor (610), which is disposed in the second collection tank (210) for detecting the concentration of concentrated water in the second collection tank (210) and is electrically connected to the controller. When the concentration in the second collection tank (210) reaches 10000 μS / cm, the concentration monitoring sensor (610) sends a second signal to the controller. The controller is also electrically connected to the second delivery pump (250) and is used to control the second delivery pump (250) to start after receiving the second signal, thereby delivering concentrated water to the electroplating main tank (400).

10. The copper-nickel recovery and water reuse system for electroplating lines according to any one of claims 1-9, characterized in that, The first collection tank (200) and the second collection tank (210) are disposed in the same trough-shaped container, and are separated by a partition plate, the height of which is lower than the height of the side wall of the trough-shaped container.

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