Intelligent waste palladium liquid treatment device

Abstract

The utility model discloses an intelligent waste palladium liquid treatment device, and belongs to the technical field of wastewater treatment in the PCB industry. Comprising a waste palladium liquid adjusting tank, a reaction tank, an ion exchange resin tower and a waste palladium liquid storage barrel which are connected in sequence. Wherein the waste palladium liquid regulating tank conveys waste palladium liquid to the reaction tank through a first conveying assembly; and the reaction tank conveys the waste palladium liquid to the ion exchange resin tower through a second conveying assembly. Furthermore, the reaction tank is connected with a liquid medicine conveying assembly, the liquid medicine conveying assembly is used for conveying liquid medicine into the reaction tank, and a stirring piece used for stirring and uniformly mixing the liquid medicine and the waste palladium liquid is further arranged in the reaction tank. Furthermore, the device further comprises a PLC, and the PLC is in signal connection with the stirring piece, the liquid medicine conveying assembly, the first conveying assembly and the second conveying assembly. Through precise control of the PLC, automation and intelligentization of waste palladium liquid treatment can be achieved, the treatment efficiency and effect are improved, and the cost and risk of manual operation are reduced.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology in the PCB industry, and in particular to an intelligent waste palladium solution treatment device. Background Technology

[0002] Printed circuit board (PCB) wastewater is produced in large quantities, with a wide variety of pollutants and complex composition. The pollutants in PCB wastewater from different sources vary, and the treatment processes required also differ. Palladium-containing PCB wastewater refers to the cleaning water generated from palladium plating lines. Its main pollutant is palladium, and according to emission standards, it must be collected separately and treated to meet specific standards before being discharged into the general wastewater treatment plant.

[0003] Currently, the most widely used method for treating palladium in circuit board wastewater is chemical precipitation. This process first adjusts the pH of the wastewater by adding sodium hydroxide solution, and then adds sodium sulfide, causing the palladium ions in the wastewater to react with the sodium sulfide to form water-insoluble palladium sulfide precipitate.

[0004] However, despite the advantages of chemical precipitation in treatment effectiveness, it faces numerous challenges in practical operation. For example, the process requires frequent addition of chemical reagents and adjustment of equipment parameters, which not only increases labor costs but may also pose safety hazards. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent waste palladium solution treatment device to solve the problems of the existing technology that requires a lot of manpower and poses safety hazards in the process of treating waste palladium solution.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] This application provides an intelligent waste palladium solution treatment device, comprising:

[0008] Waste palladium solution conditioning tank;

[0009] A reaction tank is connected to the waste palladium solution conditioning tank, and a stirring element is provided inside the reaction tank;

[0010] An ion exchange resin tower is connected to the reaction tank;

[0011] A waste palladium solution storage tank is connected to the ion exchange resin tower;

[0012] A drug delivery assembly is connected to the reaction tank and is used to deliver the drug solution to the reaction tank;

[0013] The first conveying assembly is used to convey the waste palladium solution in the waste palladium solution conditioning tank to the reaction tank;

[0014] The second conveying assembly is used to convey the waste palladium solution in the reaction tank to the ion exchange resin tower;

[0015] The PLC controller is connected to the stirring component, the liquid delivery assembly, the first delivery assembly, and the second delivery assembly via signal connection.

[0016] In this scheme, the waste palladium solution conditioning tank serves as a preliminary collection and conditioning container for the waste palladium solution, ensuring that it reaches a certain level of stability and homogeneity before entering subsequent treatment stages. In the reaction tank, water treatment agents such as sodium hydroxide solution, sodium sulfide, and flocculants are added to the waste palladium solution to effectively remove harmful substances, improving the clarity and quality of the waste liquid. The ion exchange resin tower further removes impurities and harmful substances from the waste palladium solution using ion exchange resin.

[0017] Workflow:

[0018] The first conveying component is controlled by a PLC controller to transport the waste palladium solution from the waste palladium solution conditioning tank to the reaction tank.

[0019] The PLC controller sends a signal to the chemical delivery component, which then delivers the chemical to the reaction tank according to the influent flow rate.

[0020] At the same time, the PLC controller starts the agitator to ensure that the waste palladium solution and the reagent are fully mixed and reacted.

[0021] Once the set reaction time is reached, the PLC controller activates the second conveying component to transport the waste palladium solution from the reaction tank to the ion exchange resin tower.

[0022] After further treatment in the ion exchange resin tower, the waste palladium solution is finally transported to the waste palladium solution storage tank.

[0023] The intelligent waste palladium solution treatment device of this application realizes the automation and intelligence of waste palladium solution treatment through the precise control of PLC controller, which improves the treatment efficiency and effect and reduces the cost and risk of manual operation.

[0024] Preferably, the waste palladium solution regulating tank is provided with a guide cylinder, the bottom of the waste palladium solution regulating tank is provided with a water distribution pipe connected to the guide cylinder, and the bottom of the waste palladium solution regulating tank is also provided with a reflective cone.

[0025] The flow guide tube is connected to the production workshop, allowing waste palladium solution generated in the workshop to be directly transported to the waste palladium solution conditioning tank. The water distribution pipe evenly distributes the waste palladium solution throughout the conditioning tank, ensuring its stability and homogeneity. The reflective cone, with its unique conical structure, guides the flow direction of the waste palladium solution at the bottom of the conditioning tank, achieving uniform diffusion and ensuring consistent concentration, thus avoiding fluctuations in influent concentration caused by production processes. This solution, through the flow guide tube, water distribution pipe, and reflective cone, effectively solves the problem of large concentration fluctuations in waste palladium solution generated in the production workshop.

[0026] Preferably, the first conveying component includes: a liquid level float, a first pipeline, a first lift pump, and a first valve; the first pipeline is connected to the waste palladium solution regulating tank and the reaction tank respectively, the liquid level float is disposed in the waste palladium solution regulating tank, and the first lift pump and the first valve are disposed on the first pipeline.

[0027] When the level in the waste palladium solution equalization tank reaches the set height, the level float triggers a signal and sends it to the PLC controller. Upon receiving the signal, the PLC controller automatically starts the first booster pump. Simultaneously, the PLC controller opens the first valve, allowing the waste palladium solution to flow from the equalization tank to the reaction tank through the first pipeline. Production line operation is often affected by various factors such as order volume, equipment failure, and personnel allocation, making the discharge time of waste palladium solution unpredictable. This unpredictable discharge time poses a challenge to the continuous operation and effective management of the wastewater treatment system. In this solution, the discharge time problem is effectively solved by using a level float, the first booster pump, the first valve, and the PLC controller. Through intelligent control, the device can operate when the waste palladium solution in the equalization tank reaches the set value.

[0028] Preferably, the drug delivery assembly includes a drug delivery pipeline and a delivery pump mounted on the drug delivery pipeline. The drug delivery pipeline is connected to the reaction tank, and the delivery pump is signal-connected to the PLC controller. The PLC controller sends a signal to the drug delivery pump, and the delivery pump delivers the drug to the reaction tank proportionally according to the influent flow rate.

[0029] Preferably, the second conveying component includes: a second pipeline, a second booster pump, and a second valve; the second pipeline is connected to the reaction tank and the ion exchange resin tower respectively, and the second booster pump and the second valve are disposed on the second pipeline.

[0030] When the waste palladium solution in the reaction tank has undergone preliminary treatment and meets the transport conditions, the PLC controller will send a signal. Upon receiving the instruction, the second booster pump will automatically start and begin pumping the waste palladium solution from the reaction tank. At the same time, the PLC controller will also control the second valve to open, allowing the waste palladium solution to flow through the second pipeline to the ion exchange resin tower.

[0031] Preferably, the reaction tank is provided with a support frame, the bottom of the reaction tank is provided with a sludge hopper, the bottom of the sludge hopper is provided with a sludge discharge pipe, and a pneumatic pump is provided on the sludge discharge pipe.

[0032] The support frame provides a stable support structure for the reaction tank, ensuring its stability and safety during the treatment process. Waste palladium solution reacts chemically with the reagent solution within the reaction tank, producing sludge. This sludge falls into a sludge hopper at the bottom of the reaction tank under gravity. When the sludge accumulates to a certain level in the hopper, a pneumatic pump is activated to discharge the sludge from the bottom of the hopper.

[0033] Preferably, the system also includes a detection component, which includes a detection probe disposed in the waste palladium solution storage tank, a concentration display connected to the detection probe, and an alarm connected to the concentration display.

[0034] The detection probe can monitor the palladium ion concentration in the waste palladium solution in real time and send the palladium ion concentration data to the concentration display. Operators can observe the real-time palladium ion concentration on the concentration display. When the palladium ion concentration exceeds the preset emission limit, the alarm will automatically sound an alarm signal.

[0035] Compared with existing technologies, the beneficial effects achieved by this application are as follows: This utility model stabilizes and homogenizes the waste palladium solution through a waste palladium solution conditioning tank. Harmful substances in the waste palladium solution are removed through a reaction tank. Impurities and harmful substances in the waste palladium solution are removed in one step through an ion exchange resin tower. A PLC controller controls the first conveying component to transport the waste palladium solution from the conditioning tank to the reaction tank. The PLC controller sends a signal to the reagent conveying component, which delivers reagents to the reaction tank proportionally according to the influent flow rate. Simultaneously, the PLC controller activates the agitator to ensure thorough mixing and reaction of the waste palladium solution and reagents. After the set reaction time is reached, the PLC controller controls the second conveying component to transport the waste palladium solution from the reaction tank to the ion exchange resin tower. After further treatment in the ion exchange resin tower, the waste palladium solution is finally transported to a waste palladium solution storage tank.

[0036] In summary, this invention achieves automation and intelligence in the treatment of waste palladium solution, improves treatment efficiency and effectiveness, and reduces the cost and risk of manual operation. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 These are schematic diagrams of some embodiments provided in this application.

[0039] Explanation of reference numerals in the attached drawings: 1-Waste palladium solution conditioning tank; 2-Reaction tank; 3-Ion exchange resin tower; 4-Waste palladium solution storage tank; 5-Reagent delivery assembly; 6-First delivery assembly; 7-Second delivery assembly; 8-PLC controller; 9-Detection assembly; 11-Guide tube; 12-Water distribution pipe; 13-Reflector cone; 21-Agitator; 22-Support frame; 23-Sludge hopper; 24-Sludge discharge pipe; 25-Pneumatic pump; 51-Reagent delivery pipeline; 52-Delivery pump; 61-Level float; 62-First pipeline; 63-First lift pump; 64-First valve; 71-Second pipeline; 72-Second lift pump; 73-Second valve; 91-Detection probe; 92-Concentration display; 93-Alarm. Detailed Implementation

[0040] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0041] Example 1

[0042] This embodiment describes an intelligent waste palladium solution treatment device, referencing... Figure 1The intelligent waste palladium solution treatment device in this embodiment includes a waste palladium solution conditioning tank 1, a reaction tank 2, an ion exchange resin tower 3, and a waste palladium solution storage tank 4 connected in sequence. The waste palladium solution conditioning tank 1 transports waste palladium solution to the reaction tank 2 via a first conveying component 6; the reaction tank 2 transports waste palladium solution to the ion exchange resin tower 3 via a second conveying component 7. Furthermore, a pharmaceutical solution conveying component 5 is connected to the reaction tank 2 to transport pharmaceutical solution into the reaction tank 2. The reaction tank 2 is also equipped with a stirring element 21 for mixing the pharmaceutical solution and waste palladium solution. In this embodiment, the stirring element 21 is a propeller-type stirrer with a power of 0.75KW. Further, a PLC controller 8 is included. The PLC controller 8 is model XD5-60T6-EPLC, and the controller 8 is connected to the stirring element 21, the pharmaceutical solution conveying component 5, the first conveying component 6, and the second conveying component 7 via signal connections.

[0043] In this scheme, the waste palladium solution conditioning tank 1 serves as a preliminary collection and conditioning container for the waste palladium solution, ensuring that the waste palladium solution reaches a certain level of stability and homogeneity before entering subsequent treatment stages. In the reaction tank 2, by adding water treatment agents such as sodium hydroxide solution, sodium sulfide, and flocculants to the waste palladium solution, harmful substances in the waste palladium solution can be effectively removed, improving the clarity and quality of the waste liquid. The ion exchange resin tower 3 further removes impurities and harmful substances from the waste palladium solution using ion exchange resin.

[0044] Workflow:

[0045] The first conveying component 6 is controlled by the PLC controller 8 to convey the waste palladium solution from the waste palladium solution conditioning tank to the reaction tank 2.

[0046] The PLC controller 8 sends a signal to the liquid delivery component 5, which then delivers the liquid to the reaction tank 2 according to the influent flow rate of the reaction tank 2.

[0047] At the same time, the PLC controller 8 starts the agitator 21 to ensure that the waste palladium solution and the reagent are fully mixed and reacted.

[0048] After the set reaction time is reached, the PLC controller 8 controls the second conveying component 7 to start, conveying the waste palladium solution in the reaction tank 2 to the ion exchange resin tower 3.

[0049] After further treatment in ion exchange resin tower 3, the waste palladium solution is finally transported to waste palladium solution storage tank 4.

[0050] The intelligent waste palladium solution treatment device of this application realizes the automation and intelligence of waste palladium solution treatment through the precise control of PLC controller 8, which improves the treatment efficiency and effect and reduces the cost and risk of manual operation.

[0051] During the printed circuit board manufacturing process, various factors, such as the frequency of electroplating solution replacement, variations in electroplating efficiency, and differences in cleaning steps, lead to significant fluctuations in the concentration of waste palladium solution generated in the workshop. This results in inconsistent concentrations of the palladium waste solution discharged into the waste palladium solution conditioning tank 1, increasing the difficulty of treatment.

[0052] To solve the above problems, in this embodiment, a guide tube 11 is provided on the waste palladium solution conditioning tank 1, a water distribution pipe 12 connected to the guide tube 11 is provided at the bottom of the waste palladium solution conditioning tank 1, and a reflective cone 13 is also provided at the bottom of the waste palladium solution conditioning tank 1.

[0053] The guide tube 11 is connected to the production workshop, allowing the waste palladium solution generated in the workshop to be directly transported to the waste palladium solution conditioning tank 1. The water distribution pipe 12 evenly distributes the waste palladium solution throughout the conditioning tank 1, ensuring its stability and homogeneity. The reflective cone 13, with its special conical structure, guides the flow direction of the waste palladium solution at the bottom of the conditioning tank 1, achieving uniform diffusion and ensuring consistent concentration within the tank. The guide tube 11, water distribution pipe 12, and reflective cone 13 effectively solve the problem of large concentration fluctuations in the waste palladium solution generated in the production workshop.

[0054] In this embodiment, the reaction tank 2 is made of Q235 carbon steel lined with a vinyl layer. The guide tube 11 and the reflector cone 13 are made of C30 concrete. The waste palladium solution storage tank 4 is made of polyethylene and has a volume of 3000L.

[0055] Example 2:

[0056] Based on the same inventive concept as Embodiment 1, refer to Figure 1 The intelligent waste palladium solution treatment device in this embodiment includes a waste palladium solution conditioning tank 1, a reaction tank 2, an ion exchange resin tower 3, and a waste palladium solution storage tank 4 connected in sequence. The waste palladium solution conditioning tank 1 transports waste palladium solution to the reaction tank 2 via a first conveying component 6; the reaction tank 2 transports waste palladium solution to the ion exchange resin tower 3 via a second conveying component 7. Furthermore, a pharmaceutical solution conveying component 5 is connected to the reaction tank 2 for conveying pharmaceutical solution into the reaction tank 2. The reaction tank 2 is also equipped with a stirring element 21 for mixing the pharmaceutical solution and the waste palladium solution. Further, a PLC controller 8 is included, which is signal-connected to the stirring element 21, the pharmaceutical solution conveying component 5, the first conveying component 6, and the second conveying component 7.

[0057] In this embodiment, the first conveying component 6 includes: a liquid level float 61, a first pipeline 62, a first lift pump 63, and a first valve 64. The first pipeline 62 is connected to the waste palladium solution conditioning tank 1 and the reaction tank 2 respectively. The liquid level float 61 is disposed in the waste palladium solution conditioning tank 1, and the first lift pump 63 and the first valve 64 are disposed on the first pipeline 62. Further, in this embodiment, the second conveying component 7 includes: a second pipeline 71, a second lift pump 72, and a second valve 73. The second pipeline 71 is connected to the reaction tank 2 and the ion exchange resin tower 3 respectively, and the second lift pump 72 and the second valve 73 are disposed on the second pipeline 71. Further, in this embodiment, the drug solution conveying component 5 includes a drug solution conveying pipeline 51 and a conveying pump 52 disposed on the drug solution conveying pipeline 51. The drug solution conveying pipeline 51 is connected to the reaction tank 2, and the conveying pump 52 is signal-connected to the PLC controller 8.

[0058] In this embodiment, when the liquid level in the waste palladium solution conditioning tank 1 reaches the set height, the level float 61 triggers a signal and sends it to the PLC controller 8. Upon receiving the signal, the PLC controller 8 controls the first booster pump 63 to automatically start. Simultaneously, the PLC controller 8 controls the first valve 64 to open, allowing the waste palladium solution to flow from the waste palladium solution conditioning tank 1 to the reaction tank 2 through the first pipe 62. At the same time, the PLC controller 8 sends a signal to the reagent delivery pump 52, which delivers reagents to the reaction tank 2 according to the influent flow rate. When the waste palladium solution in the reaction tank 2 has undergone preliminary treatment and meets the delivery conditions (e.g., reaching the set reaction time), the PLC controller 8 sends a signal. Upon receiving the instruction, the second booster pump 72 automatically starts and begins to extract the waste palladium solution from the reaction tank 2. Simultaneously, the PLC controller 8 also controls the second valve 73 to open, allowing the waste palladium solution to flow through the second pipe 71 to the ion exchange resin tower 3.

[0059] In this embodiment, a support frame 22 is provided on the reaction tank 2, and a sludge hopper 23 is provided at the bottom of the reaction tank 2. A sludge discharge pipe 24 is provided at the bottom of the sludge hopper 23, and a pneumatic pump 25 is provided on the sludge discharge pipe 24. The support frame 22 provides a stable support structure for the reaction tank 2, ensuring that the reaction tank 2 can remain stable and safe during the treatment process. Waste palladium solution and chemical solution undergo a chemical reaction in the reaction tank 2, producing sludge impurities. The sludge impurities fall into the sludge hopper 23 at the bottom of the reaction tank 2 under the action of gravity. When the sludge impurities in the sludge hopper 23 accumulate to a certain extent, the pneumatic pump 25 is activated to discharge the sludge impurities from the bottom of the sludge hopper 23. To avoid sludge pollution to the environment, the pneumatic pump 25 can be connected to a sludge press, and the discharged sludge impurities are further processed by the sludge press to achieve volume reduction and solidification.

[0060] In this embodiment, the stirring component, sludge hopper 23, and support frame 22 are made of 316 stainless steel.

[0061] Example 3

[0062] Based on the same inventive concept as Embodiment 1, refer to Figure 1 The difference from Embodiment 1 is that this embodiment also includes a detection component 9, which includes a detection probe 91 disposed in the waste palladium solution storage tank 4, a concentration display 92 connected to the detection probe 91, and an alarm 93 connected to the concentration display 92.

[0063] The detection probe 91 can monitor the palladium ion concentration in the waste palladium solution in real time and send the palladium ion concentration data to the concentration display 92. Operators can observe the real-time palladium ion concentration through the concentration display 92. When the palladium ion concentration exceeds the preset emission limit, the alarm 93 automatically issues an alarm signal.

[0064] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.

Claims

1. An intelligent waste palladium liquid treatment device, characterized in that, The application relates to a waste palladium liquid adjusting tank (1), a reaction tank (2) connected with the waste palladium liquid adjusting tank (1), a stirring part (21) arranged in the reaction tank (2), an ion exchange resin tower (3) connected with the reaction tank (2), a waste palladium liquid storage barrel (4) connected with the ion exchange resin tower (3), a liquid medicine conveying assembly (5) connected with the reaction tank (2) and used for conveying liquid medicine to the reaction tank (2), a first conveying assembly (6) used for conveying waste palladium liquid in the waste palladium liquid adjusting tank (1) to the reaction tank (2), a second conveying assembly (7) used for conveying waste palladium liquid in the reaction tank (2) to the ion exchange resin tower (3), and a PLC controller (8) signal-connected with the stirring part (21), the liquid medicine conveying assembly (5), the first conveying assembly (6) and the second conveying assembly (7). The waste palladium liquid adjusting tank (1) is provided with a flow guide cylinder (11), the bottom of the waste palladium liquid adjusting tank (1) is provided with a water distribution pipe (12) in communication with the flow guide cylinder (11), and the bottom of the waste palladium liquid adjusting tank (1) is further provided with a reflection cone (13). The first conveying assembly (6) comprises a liquid level floating ball (61), a first pipeline (62), a first lifting pump (63) and a first valve (64), the first pipeline (62) is connected with the waste palladium liquid adjusting tank (1) and the reaction tank (2) respectively, the liquid level floating ball (61) is arranged in the waste palladium liquid adjusting tank (1), and the first lifting pump (63) and the first valve (64) are arranged on the first pipeline (62). The liquid medicine conveying assembly (5) comprises a liquid medicine conveying pipeline (51) and a conveying pump (52) arranged on the liquid medicine conveying pipeline (51), the liquid medicine conveying pipeline (51) is connected with the reaction tank (2), and the conveying pump (52) is signal-connected with the PLC controller (8). The second conveying assembly (7) comprises a second pipeline (71), a second lifting pump (72) and a second valve (73), the second pipeline (71) is connected with the reaction tank (2) and the ion exchange resin tower (3) respectively, and the second lifting pump (72) and the second valve (73) are arranged on the second pipeline (71). The reaction tank (2) is provided with a support frame (22), the bottom of the reaction tank (2) is provided with a sludge hopper (23), the bottom of the sludge hopper (23) is provided with a sludge discharge pipe (24), and the sludge discharge pipe (24) is provided with a pneumatic pump (25). The application further comprises a detection assembly (9) which comprises a detection probe (91) arranged in the waste palladium liquid storage barrel (4), a concentration display (92) signal-connected with the detection probe (91) and an alarm (93) signal-connected with the concentration display (92). The reaction tank (2) is made of Q235 carbon steel lined with a vinyl layer. The flow guide cylinder (11) and the reflection cone (13) are made of C30 concrete. 2.The intelligent waste palladium liquid treatment device according to claim 1, characterized in that, The waste palladium liquid storage barrel (4) is made of polyethylene, and the volume of the waste palladium liquid storage barrel (4) is 3000L. 3.The intelligent waste palladium solution treatment device according to claim 1, characterized in that, ​ 4. The intelligent waste palladium solution treatment device according to claim 3, characterized in that, ​ 5. The intelligent waste palladium solution treatment device according to claim 4, characterized in that, ​ 6.The intelligent waste palladium solution treatment device according to claim 1, characterized in that, ​ 7.The intelligent waste palladium solution treatment device according to claim 1, characterized in that, ​ 8.The intelligent waste palladium solution treatment device according to claim 1, characterized in that, ​ 9.The intelligent waste palladium solution treatment device according to claim 2, characterized in that, ​ 10.The intelligent waste palladium solution treatment device according to claim 1, characterized in that, ​

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