Electroplating copper waste liquid recycling and regenerating device

Abstract

This utility model relates to the technical field of electroplating waste liquid recycling and regeneration device, and discloses an electroplating waste liquid recycling and regeneration device, including an electrolytic cell. The upper part of the electrolytic cell is a cathode tank, in which a cathode copper plate is disposed. The lower part of the electrolytic cell is an anode tank, in which an anode copper plate is disposed. The cathode copper plate is connected to the cathode of a power supply, and the anode copper plate is connected to the anode of the power supply. An anion exchange membrane is fixedly arranged inside the electrolytic cell. The anion exchange membrane is used to filter and separate the required cations, so that the cations in the cathode tank cannot pass through the anion exchange membrane and enter the anode tank. During the treatment process, the acidic substances in the waste liquid are oxidized into water, which forms bubbles on the anode and is discharged through vacuum, further reducing the acidity and harmful substance content of the wastewater and mitigating environmental pollution.

Description

Technical Field

[0001] This utility model relates to the technical field of electroplating copper waste liquid recycling and regeneration device, specifically an electroplating copper waste liquid recycling and regeneration device. Background Technology

[0002] With copper electroplating technology widely used in many fields such as electronics and hardware, the treatment of copper electroplating waste liquid has become a major challenge for the industry.

[0003] Direct discharge of copper plating wastewater causes serious environmental pollution. The wastewater contains not only large amounts of heavy metal copper ions but also various acidic substances. Once these pollutants enter soil and water bodies, they accumulate in organisms, disrupting the ecological balance and endangering human health. Furthermore, it wastes valuable resources. The metallic copper in copper plating wastewater has high recycling value; direct disposal is undoubtedly a huge waste of resources. From an environmental perspective, strict emission standards force companies to properly treat wastewater and reduce pollutant emissions to meet regulatory requirements. From an economic perspective, recovering metallic copper from wastewater and converting it into renewable electroplating solution can reduce companies' raw material procurement costs, improve resource utilization efficiency, and enhance their competitiveness.

[0004] This copper plating wastewater recycling and regeneration device was developed in response to this need. Through the synergistic effect of the cathode and anode copper plates in the electrolytic cell, combined with anion exchange membranes and a vacuum device, it achieves the reduction of metal ions, the conversion of acidic substances, and the regeneration of the wastewater. This not only effectively solves the problem of environmental pollution caused by copper plating wastewater but also transforms the wastewater into a reusable resource. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for recycling and regenerating copper plating waste liquid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it includes an electrolytic cell, wherein the upper part of the electrolytic cell is a cathode cell containing a cathode copper plate, and the lower part of the electrolytic cell is an anode cell containing an anode copper plate; the cathode copper plate is connected to the cathode of a power supply, and the anode copper plate is connected to the anode of the power supply.

[0007] An electroplating tank waste liquid tank is used to hold electroplating liquid and is connected to an electrolytic cell to discharge the electroplating liquid inside the waste liquid tank into the cathode tank of the electrolytic cell.

[0008] An anion exchange membrane is fixedly arranged inside the electrolytic cell. The anion exchange membrane is used to filter and separate the required cations, so that the cations in the cathode cell cannot pass through the anion exchange membrane and enter the anode cell.

[0009] A regenerated medicine tank, which is connected to an anode tank.

[0010] As a further description of the above technical solution:

[0011] The cathode copper plate strips metal cations from the waste liquid and electrolytically deposits them into metal particles on the cathode copper plate.

[0012] As a further description of the above technical solution:

[0013] The anode copper plate is dissociated through an oxidation reaction and enters the regeneration chemical tank.

[0014] As a further description of the above technical solution:

[0015] A vacuum pump is fixed above the electrolytic cell.

[0016] As a further description of the above technical solution:

[0017] The acidic substances in the waste liquid are oxidized into water from the cathode tank through the anion exchange membrane to the anode tank, and bubbles are formed on the anode copper plate and discharged from the vacuum.

[0018] As a further description of the above technical solution:

[0019] It includes a synchronous temperature control heating system, which is connected to the electroplating waste liquid tank and the regeneration chemical tank to achieve temperature synchronization between the anode tank and the cathode tank.

[0020] This utility model has the following beneficial effects:

[0021] 1. Through repeated electrolysis, the metal ions in the waste liquid are recovered and transformed into a regenerable electroplating solution. A regeneration tank is used to collect and store these regenerated electroplating solutions. After analysis, replenishment, and concentration adjustment, they can be reused in electroplating production, reducing the procurement cost of the electroplating solution and minimizing the environmental impact of waste liquid discharge.

[0022] 2. By converting wastewater into renewable resources, the discharge of electroplating wastewater is significantly reduced. During the treatment process, acidic substances in the wastewater are oxidized into water, which forms bubbles on the anode and is discharged through vacuum, further reducing the acidity and harmful substance content of the wastewater and mitigating environmental pollution. Attached Figure Description

[0023] Figure 1 This is a flowchart of the electroplating copper waste liquid recycling and regeneration device proposed in this utility model.

[0024] Legend: 1. Electrolytic cell; 11. Cathode cell; 12. Anode cell; 2. Anion exchange membrane; 3. Heating system; 4. Power supply; 5. Regeneration solution tank; 51. Synchronous temperature-controlled heating system; 6. Electroplating waste liquid tank; 7. Vacuum pump; 8. Cathode copper plate; 9. Anode copper plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0028] Reference Figure 1This utility model provides an embodiment of a copper plating waste liquid recycling and regeneration device. The flowchart shows: A waste liquid tank 6 is used to hold the electroplating liquid, ensuring that the tank body is not corroded or damaged during storage. The waste liquid tank 6 is connected to a synchronous temperature control heating system 51. A temperature sensor monitors its temperature in real time, and the control circuit adjusts the operation of the heating element according to the set temperature to heat or dissipate heat from the waste liquid tank 6. One side of the waste liquid tank 6 is tightly connected to an electrolytic cell 1, ensuring that the electroplating liquid in the waste liquid tank 6 can flow into the electrolytic cell 1 under gravity, or it can be assisted by a pumping device. A power supply 4 is provided on one side of the electrolytic cell 1 to provide power output.

[0029] Inside the electrolytic cell 1, a cathode copper plate 8 is installed at the top, and an anode copper plate 9 is correspondingly installed below. The cathode copper plate 8 is connected to the cathode of the power supply 4, and the anode copper plate 9 is connected to the anode of the power supply 4. When the power is turned on, a uniform and stable electric field can be constructed inside the electrolytic cell 1. Under the action of this electric field, the anions and cations in the electroplating solution are driven by the electric field force and move in a directional manner. Positively charged cations will move towards the cathode under the attraction of the electric field force, while negatively charged anions will move towards the anode, thereby achieving effective separation of anions and cations in the electroplating solution. This not only provides a reaction site for the reduction of metal ions, but when metal cations move to the surface of the cathode copper plate 8 under the action of the electric field force, they will gain electrons and undergo a reduction reaction; for example, Cu2+ is successfully reduced from waste liquid to metallic copper and deposited on the cathode copper plate 8. As the reaction time continues, these metal particles will gradually aggregate and grow, eventually forming a metal deposit of a certain scale, creating conditions for subsequent metal recovery work and improving the efficiency and purity of metal recovery.

[0030] Inside the electrolytic cell 1, an anion exchange membrane 2 is fixedly arranged, possessing ion selective permeation performance. The anion exchange membrane 2 can identify and filter the ions required for membrane separation based on factors such as the charge characteristics and ionic radius of the ions. This anion exchange membrane 2 is used to filter and separate the required cations, preventing cations in the cathode cell 11 from passing through the anion exchange membrane 2 and entering the anode cell 12. For example, the anion exchange membrane 2 can block copper ions (Cu2+), keeping them in the cathode cell 11. This facilitates the reduction and precipitation of copper ions (Cu2+) into metallic copper on the cathode cell 11, which is then deposited on the cathode copper plate 8.

[0031] Above the electrolytic cell 1, a vacuum pump 7 is installed to promptly remove bubbles formed after acidic substances in the waste liquid are oxidized into water at the anode. During electrolysis, acidic substances in the waste liquid undergo an oxidation reaction at the anode, and the resulting water appears in the form of bubbles. The vacuum pump 7 removes these bubbles, preventing their accumulation. This operation also improves the purification effect of the waste liquid, making it purer and reducing the difficulty of subsequent treatment.

[0032] On one side of the electrolytic cell 1, a regeneration solution tank 5 is installed. The regeneration solution tank 5 is also connected to a synchronous temperature control heating system 51, which uses a temperature sensor and control circuit to coordinate temperature regulation, maintaining temperature synchronization with the electroplating waste liquid tank 6. The regeneration solution tank 5 is connected to the anode tank 12, where the anode copper plate 9 loses electrons and dissociates through an oxidation reaction, entering the regeneration solution tank 5. The regeneration solution tank 5 fully considers the storage and reuse requirements of the products after waste liquid treatment, ensuring the safe storage of the regeneration solution. When the metal ions in the waste liquid are fully recovered and reused, and the original waste liquid is successfully transformed into regenerable solution, this electroplating solution will automatically flow into the regeneration solution tank 5 for storage. The regeneration solution tank 5 provides a storage environment for the regeneration solution; after analysis, replenishment, and concentration adjustment, it can be recycled and reused, realizing resource recycling.

[0033] Pure regenerative solutions may include accelerators and inhibitors, some acidic solvents such as H2SO4, and other solvents.

[0034] The electroplating waste liquid tank 6 is connected to the electrolytic cell 1 via a specific connection structure, allowing the electroplating solution to flow naturally into the electrolytic cell 1. The power supply 4 supplies power to the electrolytic cell 1, connecting the cathode copper plate 8 and the anode copper plate 9 to the negative and positive terminals of the power supply, respectively, forming an electric field. Cations in the electroplating solution move towards the cathode, and anions move towards the anode, achieving ion separation. Metal cations, such as Cu²⁺, gain electrons on the cathode copper plate 8 and are reduced to form metallic Cu, which is deposited on the cathode copper plate 8. Through continuous reaction, a metal deposit is formed, achieving metal recovery. The anion exchange membrane 2 inside the electrolytic cell 1 filters anions based on their ion characteristics, allowing them to pass through while blocking impurities, thus improving the purity of the regenerated electroplating solution.

[0035] During electrolysis, acidic substances in the waste liquid are oxidized into water and bubbles at the anodic oxidation. A vacuum pump (7) above promptly removes these bubbles, purifying the waste liquid and reducing its acidity and impurity content. After multiple electrolysis, separation, and purification processes, the waste liquid is transformed into a recyclable electroplating solution, which flows into a regeneration solution tank (5) by gravity or pump. This tank is made of corrosion-resistant materials and can safely store the recyclable solution, allowing it to be reused as needed for future production, thus achieving resource recycling.

[0036] The detailed implementation methods disclosed in this article omit the detailed descriptions of known functions and known components. In order to ensure the compatibility of the assemblies, the operating methods adopted are consistent with the pipe diameter parameters of the market.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A copper plating waste liquid recycling and regeneration device, characterized in that: include: An electrolytic cell (1) has a cathode tank (11) at the top inside, in which a cathode copper plate (8) is provided, and an anode tank (12) at the bottom inside, in which an anode copper plate (9) is provided; the cathode copper plate (8) is connected to the cathode of the power supply (4), and the anode copper plate (9) is connected to the anode of the power supply (4); Electroplating tank waste liquid tank (6), the electroplating tank waste liquid tank (6) is used to place electroplating liquid, and the electroplating tank waste liquid tank (6) is connected to the electrolytic tank (1) for discharging the electroplating liquid inside the electroplating tank waste liquid tank (6) into the cathode tank of the electrolytic tank (1); An anion exchange membrane (2) is fixedly arranged inside the electrolytic cell (1). The anion exchange membrane (2) is used to filter and separate the required cations, so that the cations in the cathode cell (11) cannot pass through the anion exchange membrane (2) and enter the anode cell (12). A regenerated medicine tank (5) is connected to an anode tank (12).

2. The electroplating copper waste liquid recycling and regeneration device according to claim 1, characterized in that: The cathode copper plate (8) strips off metal cations from the waste liquid and electrolytically deposits them into metal particles on the cathode copper plate (8).

3. The electroplating copper waste liquid recycling and regeneration device according to claim 1, characterized in that: The anode copper plate (9) is dissociated by oxidation and enters the regeneration chemical tank (5).

4. The electroplating copper waste liquid recycling and regeneration device according to claim 1, characterized in that: A vacuum pump (7) is fixedly installed above the electrolytic cell (1).

5. The electroplating copper waste liquid recycling and regeneration device according to claim 4, characterized in that: The acidic substances in the waste liquid are oxidized into water from the cathode tank (11) through the anion exchange membrane to the anode tank (12), and bubbles are formed on the anode copper plate (9) and discharged from the vacuum (7).

6. The electroplating copper waste liquid recycling and regeneration device according to claim 1, characterized in that: It includes a synchronous temperature control heating system (51), which is connected to the electroplating tank waste liquid tank (6) and the regeneration chemical tank (5) to achieve temperature synchronization between the anode tank (12) and the cathode tank (11).

Images