Copper ion adsorption equipment and adsorption process for recycling copper-containing wastewater in PCB (Printed Circuit Board) production

Abstract

The invention relates to the technical field of copper ion adsorption equipment, and discloses copper ion adsorption equipment for recycling copper-containing wastewater in PCB (printed circuit board) production and an adsorption process, the copper ion adsorption equipment comprises an ion exchange column, a liquid inlet and a liquid outlet, the liquid inlet is formed in the top of the ion exchange column, and the liquid outlet is formed in the bottom of the ion exchange column; the outer side of the liquid inlet is provided with a speed limiting assembly used for controlling the flow velocity of the copper-containing wastewater, the bottom of the ion exchange column is provided with a liquid separation detection assembly used for detecting the processed wastewater in batches, and through the arrangement of the speed limiting assembly, the flow velocity of the wastewater is automatically controlled to be always kept within a safe range; compared with a wastewater flow rate control technology in the prior art, the automatic flow rate control mode has the advantages that the fan blades, the fan blade rod and the spherical inclined rod are arranged, so that in the flow rate control process, the flow rate of the ion exchange column is reduced, and the flow rate of the ion exchange column is reduced; the impact and abrasion of the waste water on internal parts of the ion exchange column are reduced.

Description

Technical Field

[0001] The invention relates to the field of copper ion adsorption equipment, and in particular to copper ion adsorption equipment and an adsorption process for recovering copper-containing wastewater in PCB production. Background Art

[0002] The ion exchange column is filled with ion exchange resin, which carries ion groups that can exchange with copper ions. When copper-containing wastewater passes through the ion exchange column, the copper ions exchange with the ions on the resin and are adsorbed on the resin, thereby achieving the removal and recovery of copper ions. This method utilizes the reversibility of ion exchange. The adsorbed copper ions can be desorbed by a suitable regeneration agent, allowing the resin to restore its adsorption capacity.

[0003] During the operation of the ion exchange column, wastewater needs to be discharged into the interior of the ion exchange column. If the wastewater flow rate is too fast, the residence time of the wastewater in the ion exchange column will be shortened. The adsorption reaction between the ion exchange resin and the copper ions needs a certain amount of time to fully proceed. The excessively fast flow rate does not allow the copper ions to have enough time to combine with the active sites on the resin, thereby reducing the adsorption efficiency of the copper ions. In addition, the high-speed flowing wastewater cannot pass through the ion exchange resin layer evenly, and the resin in some areas cannot be fully utilized. In other areas, the adsorption effect is poor due to the excessively fast water flow, which will lead to a decrease in the overall adsorption efficiency and the inability to give full play to the processing capacity of the ion exchange column.

[0004] At the same time, high-speed flow of wastewater will have a great impact on the ion exchange resin, which will cause wear and breakage of the resin in the long run. The broken resin will reduce the performance of the ion exchange column and block pipes and equipment, affecting the normal operation of the entire treatment system. The rapid flow rate of wastewater will lead to incomplete adsorption of copper ions. The discharged wastewater still contains a high concentration of copper ions, which will increase the burden of subsequent treatment links. More complex treatment methods or increased scale of treatment equipment are required to ensure that the wastewater meets the discharge standards. High-speed flow of wastewater will produce large pressure fluctuations in the ion exchange column, which will affect the stability of the entire treatment system. Pressure fluctuations can cause problems such as loose pipe connections and valve leakage, increasing the risk of equipment failure.

[0005] Secondly, in the process of ion exchange resin adsorbing copper ions, the changes in its physical and chemical properties are relatively complex, and it is difficult to find a sensor that can directly and accurately reflect the saturation state of the resin. For example, common physical sensors such as pressure sensors and flow sensors can only indirectly reflect the working status of the ion exchange column, but cannot determine the saturation of the resin. Chemical sensors are easily interfered with in complex wastewater environments, and their accuracy and stability are difficult to guarantee. At the same time, in the actual treatment of copper-containing wastewater in PCB production, the wastewater contains a variety of impurities and interfering substances, which will affect the accuracy of the sensor's detection of the saturation of the ion exchange resin. For example, organic matter, suspended matter, and changes in pH in the wastewater will interfere with the sensor's signal, causing deviations in the test results, and it is impossible to accurately know the saturation of the ion exchange resin. Regarding the saturation of the resin, operators can often only regenerate the resin based on experience or fixed time intervals, which will result in regeneration before the resin is fully saturated, wasting regeneration agents and energy, or regeneration after the resin is over-saturated, so that the copper ions in the wastewater cannot be removed in a timely and effective manner, reducing the treatment efficiency. As mentioned earlier, inaccurate judgment of the timing of regeneration leads to waste of regeneration agents. In addition, if the resin continues to be used after being over-saturated, the copper ions in the wastewater will leak, requiring additional treatment, increasing the treatment cost. At the same time, frequent regeneration operations will also shorten the service life of the resin and increase the cost of replacing the resin. If the ion exchange resin continues to be used in a saturated state, the copper ions in the wastewater cannot be effectively removed, and the recovery of copper ions from copper-containing wastewater fails.

[0006] Therefore, it is necessary to provide copper ion adsorption equipment and adsorption process for recycling copper-containing wastewater in PCB production, aiming to solve the above problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a copper ion adsorption device and an adsorption process for recovering copper-containing wastewater in PCB production.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: copper ion adsorption equipment and adsorption process for recycling copper-containing wastewater in PCB production, including an ion exchange column, a liquid inlet and a liquid outlet, the liquid inlet is opened at the top of the ion exchange column, the liquid outlet is opened at the bottom of the ion exchange column, a speed limiting component for controlling the flow rate of the copper-containing wastewater is arranged on the outside of the liquid inlet, and a liquid separation detection component for batch detection of the wastewater after processing is arranged at the bottom of the ion exchange column.

[0009] Preferably, the speed limiting assembly includes an arc tube, which is fixedly connected to the end of the liquid inlet away from the ion exchange column, the inside of the arc tube is rotatably connected to a blade rod, the middle part of the blade rod is rotatably connected to a balance plate, the top of the blade rod is slidably connected to a limiting slider, the outer wall of the limiting slider is symmetrically rotatably connected to a connecting rod, and the ends of the two connecting rods away from the limiting slider are rotatably connected to a spherical tilting rod.

[0010] Preferably, the speed limiting assembly also includes an L-shaped positioning rod, the L-shaped positioning rod is fixedly connected to the top of the arc tube, the top of the L-shaped positioning rod is rotatably connected to a Y-shaped rotating rod, one end of the Y-shaped rotating rod is rotatably connected to a trigger rod, and the other end of the Y-shaped rotating rod is symmetrically rotatably connected to an arc-shaped slider, the end of the trigger rod away from the Y-shaped rotating rod is rotatably connected to a right-angle rod, and the end of the right-angle rod away from the trigger rod is fixedly connected to a liquid-blocking plate.

[0011] Preferably, the liquid dispensing detection component includes a positioning block, which is arranged at the bottom of the ion exchange column, the interior of the positioning block is fixedly connected to a U-shaped connecting tube, the end of the U-shaped connecting tube away from the liquid outlet is slidably connected to an L-shaped sleeve, a double-layer groove is opened inside the L-shaped sleeve, the double-layer groove and the top of the U-shaped connecting tube away from the liquid outlet are both provided with sealing beads, the top of the L-shaped sleeve is fixedly connected to an arc-shaped drainage block, the bottom of the positioning block is fixedly connected to a limiting rod, the end of the U-shaped connecting tube away from the liquid outlet is sleeved with a reset spring, and the top of the reset spring is fixedly connected to the L-shaped sleeve, and the reset spring is fixedly connected to the bottom of the positioning block.

[0012] Preferably, the liquid separation detection component also includes a motor, the motor is fixedly connected to the top of the positioning block, the output shaft of the motor is fixedly connected to the rotating block, the bottom of the positioning block is slidably connected to a collecting box, the top of the collecting box is fixedly connected to a detector, and the detector is arranged below the arc-shaped liquid drainage block.

[0013] Preferably, the two spherical tilting rods are both rotatably connected to the top of the blade rod, the arc-shaped slider of the Y-shaped rotating rod is slidably connected to the outer wall of the limit slider, and the liquid-blocking plate is rotatably connected to the inside of the arc-shaped tube.

[0014] Preferably, the end of the U-shaped connecting tube away from the positioning block is connected to the liquid outlet, the L-shaped sleeve is connected to the arc-shaped liquid discharge block, the L-shaped sleeve is slidably connected to the outer wall of the limiting rod, the bottom of the rotating block is set to an inclined shape, and the motor and the detector are electrically connected to the power supply used by the equipment.

[0015] Preferably, the copper ion adsorption process for recovering copper-containing wastewater from PCB production comprises the following steps:

[0016] Step 1: Select appropriate ion exchange resin: According to the characteristics and treatment requirements of copper-containing wastewater, select ion exchange resin with high selectivity, high adsorption capacity and good regeneration performance, and load the selected ion exchange resin into the ion exchange column according to a certain method;

[0017] Step 2: According to the characteristics of the ion exchange resin and the existence form of copper ions, the pH value of the copper-containing wastewater is adjusted to be within a suitable adsorption range, and the copper-containing wastewater with adjusted pH value is passed through the ion exchange column at an appropriate flow rate;

[0018] Step 3: During the adsorption process, the inlet and outlet water quality of the ion exchange column needs to be tested to understand the adsorption of copper ions and the saturation of the resin. When the ion exchange resin is saturated with adsorption, it needs to be regenerated to restore its adsorption capacity. According to the type of ion exchange resin and the characteristics of the adsorbed copper ions, the appropriate regeneration method is selected;

[0019] Step 4: According to the determined regeneration method, the regeneration agent is passed through the ion exchange column at an appropriate concentration and flow rate to perform the regeneration operation. During the regeneration process, it is necessary to pay attention to controlling the dosage, temperature and time parameters of the regeneration agent to ensure the regeneration effect;

[0020] Step 5: After regeneration is completed, the ion exchange resin needs to be rinsed with clean water to remove the residual regeneration agent and the desorbed copper ions. During the rinsing process, pay attention to controlling the flow rate and amount of the rinse water to ensure that the resin is fully rinsed.

[0021] Preferably, during filling in step 1, attention should be paid to the uniformity and density of the resin to avoid the occurrence of gaps and channeling, so as to ensure that the wastewater can fully contact with the resin.

[0022] Preferably, the amount of the regeneration agent in step 4 is generally determined based on the adsorption capacity and regeneration efficiency of the resin. Normally, the amount of the regeneration agent is - times the volume of the resin. At the same time, the regeneration temperature and time will also affect the regeneration effect. Generally speaking, increasing the regeneration temperature can speed up the regeneration speed, but too high a temperature will cause decomposition and damage to the resin. The regeneration time needs to be determined based on the type of resin, the concentration of the regeneration agent and the flow rate, and is generally one to three hours.

[0023] The copper ion adsorption equipment and adsorption process for recovering copper-containing wastewater from PCB production provided by the present invention have the following beneficial effects compared with the prior art:

[0024] 1. Through the setting of the speed limiting component, the wastewater will impact the blades at the bottom of the blade rod during the process of being discharged into the ion exchange column. When the wastewater flow rate is too fast, the wastewater will cause the blade rod to drive the spherical tilting rod to rotate at high speed. Under the action of eccentricity, the spherical tilting rod close to the end of the connecting rod will indirectly drive the limit slider to slide down. During the descent of the limit slider, the Y-shaped rotating rod and the trigger rod will turn the right-angle rod to rotate under the action of the lever. Finally, the right-angle rod will drive the liquid blocking plate to rotate. During the rotation of the liquid blocking plate, the liquid will be blocked, thereby reducing the wastewater flow rate, so as to automatically control the wastewater flow rate to always remain within a safe range, effectively preventing the problems of reduced adsorption efficiency of the ion exchange column, resin wear, incomplete treatment, etc. caused by excessive flow rate, and ensuring the stability and efficiency of the entire wastewater treatment process;

[0025] Secondly, compared with the wastewater flow rate control technology in the prior art, this automatic flow rate control method, the setting of the fan blades, fan blade rods, and spherical tilting rods, prevents the wastewater flow rate from being too fast, which will cause great impact and wear on the components in the ion exchange column. For key components such as ion exchange resins, it can maintain its good adsorption performance and improve resource recovery efficiency. At the same time, it uses the centrifugal force principle to achieve automatic control. When the wastewater flow rate is too fast, the spherical tilting rod tilts under the action of the eccentricity, driving the limit slider to slide down. This design can sensitively sense the flow rate changes and achieve automatic control through a simple mechanical structure without the need for complex electronic equipment and sensors.

[0026] 2. Through the setting of the liquid separation detection component, when the ion exchange column is used to adsorb and recover copper-containing wastewater, the staff cannot detect the saturation of the ion exchange resin in real time. The rotating block will repeatedly squeeze the arc-shaped drainage block during rotation. During the descent of the arc-shaped drainage block, the recovered wastewater in the ion exchange column will be pumped into the double-layer tank. Finally, with the cooperation of the sealing beads, the recovered wastewater will be discharged into the collection box in batches after being detected by the detector, thereby achieving the purpose of real-time detection of the saturation of the ion exchange resin, avoiding the problems of missing the best regeneration time, reduced treatment efficiency, increased costs and environmental risks caused by the inability to detect the saturation in real time. The staff can accurately grasp the working status of the ion exchange resin based on the real-time detection results, and perform operations such as regeneration or replacement of the resin in time to ensure the efficient and stable operation of the wastewater treatment process;

[0027] Secondly, the structure realizes automatic detection and batch detection, reduces the workload and errors of manual operation, and the staff does not need to frequently perform sampling detection and manual adjustment operations, which improves the operational convenience and work efficiency. At the same time, the results of automatic detection and batch detection are more accurate and reliable, which helps to improve the stability and reliability of the wastewater treatment system. Compared with the liquid flow rate control technology in the prior art, components such as the rotating block, arc-shaped drainage block, double-layer trough, detector and collection box cooperate with each other to form a complete real-time detection and batch detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the position relationship of the overall device of the present invention;

[0029] Figure 2 It is a cross-sectional view of the overall device of the present invention;

[0030] Figure 3 This is a schematic diagram of the positional relationship of the ion exchange column, liquid inlet, and speed limiting component of the present invention;

[0031] Figure 4 For the present invention Figure 3 A magnified view of the structure at center;

[0032] Figure 5 This is a schematic diagram of the position relationship of the speed limiting components of the present invention;

[0033] Figure 6 For the present invention Figure 5 A magnified view of the structure at B in the middle;

[0034] Figure 7 It is a schematic diagram of the positional relationship of the ion exchange column, liquid outlet, and liquid separation detection component of the present invention;

[0035] Figure 8 For the present invention Figure 7 A magnified view of the structure at C in the middle;

[0036] Fig. 9 It is a schematic diagram of the positional relationship of the L-shaped sleeve, double-layer groove, sealing bead and arc-shaped drainage block of the present invention.

[0037] Reference numerals: 11, ion exchange column; 12, liquid inlet; 13, liquid outlet;

[0038] The speed limiting assembly includes: 21, arc tube; 22, fan blade rod; 23, balance plate; 24, limit slider; 25, connecting rod; 26, spherical tilt rod; 27, L-shaped positioning rod; 28, Y-shaped rotating rod; 29, trigger rod; 210, right-angle rod; 211, liquid blocking plate;

[0039] The liquid dispensing detection component includes: 31, positioning block; 32, U-shaped connecting pipe; 33, L-shaped sleeve; 34, double-layer groove; 35, sealing bead; 36, arc-shaped liquid discharge block; 37, limit rod; 38, reset spring; 39, motor; 310, rotating block; 311, collecting box; 312, detector. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0042] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0043] Embodiment 1:

[0044] Implementation example Figures 1 to 9 As shown, a copper ion adsorption device and adsorption process for recycling copper-containing wastewater in PCB production provided by an embodiment of the present invention includes an ion exchange column 11, a liquid inlet 12 and a liquid outlet 13, the liquid inlet 12 is opened at the top of the ion exchange column 11, the liquid outlet 13 is opened at the bottom of the ion exchange column 11, a speed limiting component for controlling the flow rate of the copper-containing wastewater is arranged on the outer side of the liquid inlet 12, and a liquid separation detection component for batch detection of the wastewater after processing is arranged at the bottom of the ion exchange column 11.

[0045] The speed limiting component includes an arc tube 21, which is fixedly connected to the end of the liquid inlet 12 away from the ion exchange column 11. The inside of the arc tube 21 is rotatably connected to a blade rod 22, the middle part of the blade rod 22 is rotatably connected to a balance plate 23, the top of the blade rod 22 is slidably connected to a limit slider 24, the outer wall of the limit slider 24 is symmetrically rotatably connected to a connecting rod 25, and the ends of the two connecting rods 25 away from the limit slider 24 are both rotatably connected to a spherical tilting rod 26.

[0046] The speed limiting assembly also includes an L-shaped positioning rod 27, which is fixedly connected to the top of the arc tube 21. The top of the L-shaped positioning rod 27 is rotatably connected to a Y-shaped rotating rod 28, one end of the Y-shaped rotating rod 28 is rotatably connected to a trigger rod 29, and the other end of the Y-shaped rotating rod 28 is symmetrically rotatably connected to an arc-shaped slider, one end of the trigger rod 29 away from the Y-shaped rotating rod 28 is rotatably connected to a right-angle rod 210, and one end of the right-angle rod 210 away from the trigger rod 29 is fixedly connected to a liquid-blocking plate 211.

[0047] The two spherical tilting rods 26 are both rotatably connected to the top of the fan blade rod 22, and the arc-shaped slider of the Y-shaped rotating rod 28 is slidably connected to the outer wall of the limit slider 24, so that the Y-shaped rotating rod 28 can be driven to rotate during the movement of the arc-shaped slider, and the liquid-blocking plate 211 is rotatably connected to the inside of the arc-shaped tube 21, so that the liquid-blocking plate 211 can reduce the flow rate of wastewater.

[0048] The liquid separation detection component includes a positioning block 31, which is arranged at the bottom of the ion exchange column 11. The interior of the positioning block 31 is fixedly connected with a U-shaped connecting tube 32. The end of the U-shaped connecting tube 32 away from the liquid outlet 13 is slidably connected with an L-shaped sleeve 33. A double-layer groove 34 is opened inside the L-shaped sleeve 33. The double-layer groove 34 and the top of the end of the U-shaped connecting tube 32 away from the liquid outlet 13 are both provided with sealing beads 35. The top of the L-shaped sleeve 33 is fixedly connected with an arc-shaped drainage block 36, the bottom of the positioning block 31 is fixedly connected with a limiting rod 37, the end of the U-shaped connecting tube 32 away from the liquid outlet 13 is sleeved with a reset spring 38, and the top of the reset spring 38 is fixedly connected to the L-shaped sleeve 33, and the reset spring 38 is fixedly connected to the bottom of the positioning block 31.

[0049] The liquid dispensing detection component also includes a motor 39, which is fixedly connected to the top of the positioning block 31, and the output shaft of the motor 39 is fixedly connected to the rotating block 310. The bottom of the positioning block 31 is slidably connected to a collecting box 311, and the top of the collecting box 311 is fixedly connected to a detector 312, and the detector 312 is arranged below the arc-shaped liquid discharge block 36.

[0050] The end of the U-shaped connecting tube 32 away from the positioning block 31 is connected to the liquid outlet 13, so that the liquid inside the ion exchange column 11 can flow into the double-layer groove 34. The L-shaped sleeve 33 is connected to the arc-shaped drainage block 36, so that the liquid inside the double-layer groove 34 can be discharged through the arc-shaped drainage block 36. The L-shaped sleeve 33 is slidably connected to the outer wall of the limit rod 37, so that the L-shaped sleeve 33 can slide in a limited position. The bottom of the rotating block 310 is set to an inclined shape, so that the rotating block 310 will continue to resist the arc-shaped drainage block 36 during rotation. The motor 39 and the detector 312 are both electrically connected to the power supply used by the device, so that the motor 39 and the detector 312 are started synchronously when the power supply of the device is turned on.

[0051] Embodiment 2:

[0052] The copper ion adsorption process for recycling copper-containing wastewater from PCB production includes the following steps:

[0053] Step 1: Selecting a suitable ion exchange resin: According to the characteristics and treatment requirements of the copper-containing wastewater, select an ion exchange resin with high selectivity, high adsorption capacity and good regeneration performance, and load the selected ion exchange resin into the ion exchange column 11 according to a certain method. When loading, pay attention to the uniformity and density of the resin to avoid gaps and channeling to ensure that the wastewater can fully contact with the resin;

[0054] Step 2: According to the characteristics of the ion exchange resin and the existence form of copper ions, the pH value of the copper-containing wastewater is adjusted to be within a suitable adsorption range, and the copper-containing wastewater with adjusted pH value passes through the ion exchange column 11 at an appropriate flow rate;

[0055] Step 3: During the adsorption process, the inlet and outlet water quality of the ion exchange column 11 needs to be tested to understand the adsorption of copper ions and the saturation of the resin. When the ion exchange resin is saturated with adsorption, it needs to be regenerated to restore its adsorption capacity. According to the type of ion exchange resin and the characteristics of the adsorbed copper ions, a suitable regeneration method is selected;

[0056] Step 4: According to the determined regeneration method, the regeneration agent is passed through the ion exchange column 11 at an appropriate concentration and flow rate to perform a regeneration operation. During the regeneration process, it is necessary to pay attention to controlling the dosage, temperature and time parameters of the regeneration agent to ensure the regeneration effect;

[0057] Step 5: After regeneration is completed, the ion exchange resin needs to be rinsed with clean water to remove residual regeneration agent and desorbed copper ions. During the rinsing process, attention should be paid to controlling the flow rate and amount of the rinse water to ensure that the resin is fully rinsed. The amount of regeneration agent is generally determined according to the adsorption capacity and regeneration efficiency of the resin. Normally, the amount of regeneration agent is two to five times the volume of the resin. At the same time, the regeneration temperature and time will also affect the regeneration effect. Generally speaking, increasing the regeneration temperature can speed up the regeneration speed, but too high a temperature will cause the resin to decompose and damage. The regeneration time needs to be determined according to the type of resin, the concentration of the regeneration agent and the flow rate factors, generally one to three hours.

[0058] Working principle: In the initial state, the limit slider 24 is located at the top of the fan blade rod 22, the Y-shaped rotating rod 28 trigger rod 29 is in a vertical state, and the reset spring 38 is not compressed.

[0059] During operation, the staff first connects the copper-containing wastewater pipe generated during the PCB production process to the end of the arc tube 21 away from the liquid inlet 12, and then the copper-containing wastewater is discharged into the interior of the ion exchange column 11 through the arc tube 21 and the liquid inlet 12 for processing;

[0060] In this process, if the flow rate of the copper-containing wastewater is too fast, the residence time of the wastewater in the ion exchange column 11 will be shortened, because the adsorption reaction between the ion exchange resin and the copper ions requires a certain amount of time to fully proceed. At the same time, the high-speed flow of wastewater will produce a large impact force on the ion exchange resin, which will cause the resin to wear and break in the long run. The broken resin will reduce the performance of the ion exchange column 11, and then the flow rate of the copper-containing wastewater needs to be controlled;

[0061] When the copper-containing wastewater flows into the liquid inlet 12 through the arc tube 21, if the flow rate of the copper-containing wastewater is too fast, the copper-containing wastewater will impact the blades at the bottom of the blade rod 22, thereby causing the blade rod 22 to rotate at a high speed. The rotation process of the blade rod 22 will drive the two spherical tilting rods 26 at the top to rotate synchronously. Under the action of eccentricity, the ends of the two spherical tilting rods 26 close to the connecting rod 25 will pull the limit slider 24 down through the connecting rod 25, thereby causing the limit slider 24 to slide along the top of the blade rod 22.

[0062] Because the arc-shaped slider of the Y-shaped rotating rod 28 is slidably connected to the outer wall of the limiting slider 24, under the action of the lever, the limiting slider 24 will make the Y-shaped rotating rod 28 rotate around the L-shaped positioning rod 27 through the arc-shaped slider of the Y-shaped rotating rod 28, and during the rotation of the Y-shaped rotating rod 28, the end thereof away from the limiting slider 24 will pull the trigger rod 29 to rise, and then the end of the trigger rod 29 away from the Y-shaped rotating rod 28 will pull the liquid blocking plate 211 to rotate through the right-angle rod 210, and the liquid blocking plate 211 is rotatably connected to the inside of the arc-shaped tube 21, so that when the liquid blocking plate 211 rotates, it will generate a certain resistance to the copper-containing wastewater, thereby achieving the purpose of reducing the flow rate of the copper-containing wastewater;

[0063] Contrary to the above movement process, if the flow rate of the copper-containing wastewater decreases, the copper-containing wastewater cannot drive the fan blade rod 22 to rotate at a high speed. Similarly, the fan blade rod 22 cannot use the eccentricity to make the two spherical tilting rods 26 pull the limit slider 24 down through the connecting rod 25, so that the Y-shaped rotating rod 28 is vertical to the trigger rod 29 again, so that the liquid blocking plate 211 is placed horizontally, thereby avoiding affecting the normal flow rate of the copper-containing wastewater, and achieving the effect of automatically controlling the flow rate of the copper-containing wastewater, effectively preventing the problems of reduced adsorption efficiency of the ion exchange column 11, resin wear, incomplete treatment, etc. caused by excessive flow rate, and ensuring the entire wastewater treatment process. The process is stable and efficient, and this automatic flow rate control method can avoid the excessive impact and wear on the components in the ion exchange column 11 caused by the wastewater flow rate being too fast during the flow rate control process. For key components such as ion exchange resin, its good adsorption performance can be maintained, and the resource recovery efficiency can be improved. At the same time, automatic control is achieved by using the centrifugal force principle. When the wastewater flow rate is too fast, the spherical tilting rod 26 tilts under the action of centrifugal force, driving the limit slider 24 to slide down. This design can sensitively sense the flow rate change and achieve automatic control through a simple mechanical structure without the need for complex electronic equipment and sensors.

[0064] Since the motor 39 and the detector 312 are both electrically connected to the power supply of the equipment, the staff turns on the power supply of the equipment, and then the motor 39 and the detector 312 are started synchronously. After the motor 39 is started, it drives the rotating block 310 to rotate. Since the bottom of the rotating block 310 is set to be inclined, the rotating block 310 will continue to resist the arc-shaped drainage block 36 during the rotation process;

[0065] The arc-shaped liquid discharge block 36 will be driven to descend synchronously when being resisted by the rotating block 310. During this process, the L-shaped sleeve 33 will slide along the end of the U-shaped connecting tube 32 away from the liquid outlet 13 and the outer wall of the limit rod 37 at the same time. At the same time, the L-shaped sleeve 33 will gradually compress the return spring 38 toward the bottom of the positioning block 31.

[0066] Because the liquid outlet 13 is connected with the U-shaped connecting pipe 32 and the L-shaped sleeve 33, the wastewater recovered at the bottom of the ion exchange column 11 will flow into the liquid outlet 13, the U-shaped connecting pipe 32 and the inside of the double-layer tank 34, and then the air at the bottom of the double-layer tank 34 is compressed during the descending process of the L-shaped sleeve 33. At this time, a sealing bead 35 is arranged on the top of the end of the U-shaped connecting pipe 32 away from the liquid outlet 13, so that the end of the U-shaped connecting pipe 32 away from the liquid outlet 13 is blocked. Under the pressure generated by the L-shaped sleeve 33, the L-shaped sleeve 33 will move the copper-containing wastewater at the bottom of the double-layer tank 34 to the top of the double-layer tank 34, and then the copper-containing wastewater will move against the sealing bead 35 on the top of the double-layer tank 34, and finally the copper-containing wastewater inside the double-layer tank 34 will flow out along the arc-shaped drainage block 36 on the top of the L-shaped sleeve 33.

[0067] The detector 312 is arranged below the arc-shaped drainage block 36. Finally, the copper-containing wastewater flowing out of the arc-shaped drainage block 36 will flow into the collection box 311 through the detector 312. The detector 312 will perform batch detection on the copper-containing wastewater flowing out of the arc-shaped drainage block 36, thereby reducing the workload and errors of manual operation. The staff does not need to frequently perform sampling detection and manual adjustment operations, thereby improving the operational convenience and work efficiency.

[0068] During the continuous rotation of the rotating block 310, there is a certain time gap between the rotating block 310 and the arc-shaped liquid discharge block 36. During this gap, the return spring 38 will elastically stretch and push the L-shaped sleeve 33 to rise. During the rising process of the L-shaped sleeve 33, the sealing bead 35 will again collide with the top of the double-layer groove 34 under the action of gravity, so that during the rising process of the L-shaped sleeve 33, the copper-containing wastewater inside the U-shaped connecting tube 32 away from the liquid outlet 13 will be drawn, so that the copper-containing wastewater will collide with the end of the U-shaped connecting tube 32 away from the liquid outlet 13 and the sealing bead 35 on its top to form a gap, thereby causing the copper-containing wastewater inside the ion exchange column 11 to flow into the double-layer groove 34 again along the liquid outlet 13 and the U-shaped connecting tube 32;

[0069] During the continuous rotation of the rotating block 310, the copper-containing wastewater processed inside the ion exchange column 11 will be continuously discharged through the arc-shaped drainage block 36. At the same time, the detector 312 will perform batch detection on the copper-containing wastewater flowing out of the arc-shaped drainage block 36. Therefore, when the detector 312 detects that a large amount of copper ions still remain in the copper-containing wastewater discharged from the ion exchange column 11, it can be analyzed that the ion exchange resin has reached a saturated state, thereby achieving the purpose of real-time detection.

[0070] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A copper ion adsorption device for recycling copper-containing wastewater in PCB production, comprising an ion exchange column (11), a liquid inlet (12) and a liquid outlet (13), wherein the liquid inlet (12) is disposed at the top of the ion exchange column (11), and the liquid outlet (13) is disposed at the bottom of the ion exchange column (11), characterized in that: A rate limiting component for controlling the flow rate of copper-containing wastewater is arranged outside the liquid inlet (12), and a liquid separation detection component for batch detection of processed wastewater is arranged at the bottom of the ion exchange column (11).

2. The copper ion adsorption equipment for recovering copper-containing wastewater from PCB production according to claim 1, characterized in that: The speed limiting component comprises an arc tube (21), wherein the arc tube (21) is fixedly connected to one end of the liquid inlet (12) away from the ion exchange column (11), the interior of the arc tube (21) is rotatably connected to a blade rod (22), the middle part of the blade rod (22) is rotatably connected to a balance plate (23), the top of the blade rod (22) is slidably connected to a limit slider (24), the outer wall of the limit slider (24) is symmetrically rotatably connected to a connecting rod (25), and the ends of the two connecting rods (25) away from the limit slider (24) are both rotatably connected to a spherical tilting rod (26).

3. The copper ion adsorption equipment for recovering copper-containing wastewater from PCB production according to claim 2, characterized in that: The speed limiting assembly further comprises an L-shaped positioning rod (27), wherein the L-shaped positioning rod (27) is fixedly connected to the top of the arc-shaped tube (21), the top of the L-shaped positioning rod (27) is rotatably connected to a Y-shaped rotating rod (28), one end of the Y-shaped rotating rod (28) is rotatably connected to a trigger rod (29), and the other end of the Y-shaped rotating rod (28) is symmetrically rotatably connected to an arc-shaped sliding block, one end of the trigger rod (29) away from the Y-shaped rotating rod (28) is rotatably connected to a right-angle rod (210), and one end of the right-angle rod (210) away from the trigger rod (29) is fixedly connected to a liquid-blocking plate (211).

4. The copper ion adsorption equipment for recycling copper-containing wastewater from PCB production according to claim 1, characterized in that: The liquid separation detection component comprises a positioning block (31), the positioning block (31) is arranged at the bottom of the ion exchange column (11), the interior of the positioning block (31) is fixedly connected with a U-shaped connecting pipe (32), the end of the U-shaped connecting pipe (32) away from the liquid outlet (13) is slidably connected with an L-shaped sleeve (33), the interior of the L-shaped sleeve (33) is provided with a double-layer groove (34), and the double-layer groove (34) and the U-shaped connecting pipe (32) away from the liquid outlet (13) are connected. ) are provided with a sealing bead (35) at the top of one end, the top of the L-shaped sleeve (33) is fixedly connected to an arc-shaped drainage block (36), the bottom of the positioning block (31) is fixedly connected to a limiting rod (37), and the end of the U-shaped connecting pipe (32) away from the liquid outlet (13) is sleeved with a return spring (38), and the top of the return spring (38) is fixedly connected to the L-shaped sleeve (33), and the bottom of the return spring (38) is fixedly connected to the bottom of the positioning block (31).

5. The copper ion adsorption equipment for recovering copper-containing wastewater from PCB production according to claim 4, characterized in that: The liquid separation detection component also includes a motor (39), the motor (39) is fixedly connected to the top of the positioning block (31), the output shaft of the motor (39) is fixedly connected to the rotating block (310), the bottom of the positioning block (31) is slidably connected to a collecting box (311), the top of the collecting box (311) is fixedly connected to a detector (312), and the detector (312) is arranged below the arc-shaped liquid discharge block (36).

6. The copper ion adsorption equipment for recycling copper-containing wastewater from PCB production according to claim 3, characterized in that: The two spherical tilting rods (26) are both rotatably connected to the top of the blade rod (22), the arc-shaped slider is slidably connected to the outer wall of the limit slider (24), and the liquid-blocking plate (211) is rotatably connected to the inside of the arc-shaped tube (21).

7. The copper ion adsorption equipment for recycling copper-containing wastewater from PCB production according to claim 5, characterized in that: The end of the U-shaped connecting tube (32) away from the positioning block (31) is connected to the liquid outlet (13), the L-shaped sleeve (33) is connected to the arc-shaped liquid discharge block (36), the L-shaped sleeve (33) is slidably connected to the outer wall of the limit rod (37), the bottom of the rotating block (310) is arranged to be inclined, and the motor (39) and the detector (312) are both electrically connected to the power supply used by the device.

8. A copper ion adsorption process for recycling copper-containing wastewater from PCB production, applied to the copper ion adsorption equipment for recycling copper-containing wastewater from PCB production according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Selecting a suitable ion exchange resin: According to the characteristics and treatment requirements of the copper-containing wastewater, selecting an ion exchange resin with high selectivity, high adsorption capacity and good regeneration performance, and loading the selected ion exchange resin into the ion exchange column (11) according to a certain method; Step 2: According to the characteristics of the ion exchange resin and the existence form of copper ions, the pH value of the copper-containing wastewater is adjusted to be within a suitable adsorption range, and the copper-containing wastewater with the adjusted pH value is passed through the ion exchange column (11) at an appropriate flow rate; Step 3: During the adsorption process, the inlet and outlet water quality of the ion exchange column (11) needs to be tested to understand the adsorption of copper ions and the saturation of the resin. When the ion exchange resin is saturated with adsorption, it needs to be regenerated to restore its adsorption capacity. According to the type of ion exchange resin and the characteristics of the adsorbed copper ions, a suitable regeneration method is selected; Step 4: according to the determined regeneration method, the regeneration agent is passed through the ion exchange column (11) at an appropriate concentration and flow rate to perform a regeneration operation. During the regeneration process, it is necessary to pay attention to controlling the amount of the regeneration agent, the temperature and the time parameters to ensure the regeneration effect; Step 5: After regeneration is completed, the ion exchange resin needs to be rinsed with clean water to remove the residual regeneration agent and the desorbed copper ions. During the rinsing process, pay attention to controlling the flow rate and amount of the rinse water to ensure that the resin is fully rinsed.

9. The copper ion adsorption process for recovering copper-containing wastewater from PCB production according to claim 8, characterized in that: During the filling in step 1, attention should be paid to the uniformity and density of the resin to avoid the occurrence of gaps and channeling, so as to ensure that the wastewater can fully contact with the resin.

10. The copper ion adsorption process for recycling copper-containing wastewater from PCB production according to claim 8, characterized in that: The amount of regeneration agent used in step 4 is generally determined based on the adsorption capacity and regeneration efficiency of the resin. Normally, the amount of regeneration agent used is two to five times the volume of the resin. At the same time, the regeneration temperature and time will also affect the regeneration effect. Generally speaking, increasing the regeneration temperature can speed up the regeneration speed, but too high a temperature will cause decomposition and damage to the resin. The regeneration time needs to be determined based on the type of resin, the concentration of the regeneration agent and the flow rate, and is generally one to three hours.

Images