A multi-stage electrolysis-based heavy metal removal system for PCB production wastewater

Abstract

The application discloses a PCB line plate production wastewater heavy metal removal system based on multistage electrolysis, relates to the multistage treatment field of wastewater, and comprises a multistage electrolysis mechanism, wherein an auxiliary mechanism is arranged on the multistage electrolysis mechanism; the auxiliary mechanism comprises two rectangular blocks, a tee bend, a detector and an electric push rod; a conveying pipe is installed at the water inlet end of the treatment box; electric regulating valves are installed at the two water outlet ends of the tee bend; a connecting plate is installed at the top of the telescopic end of the electric push rod; an L-shaped rod is fixed to the bottom of the connecting plate; a probe is fixed to the inside of the upper side round hole of the L-shaped rod; and the probe can detect whether the wastewater treated by the multistage electrolysis contains heavy metals, and the wastewater treated by the multistage electrolysis can be treated again if it still contains heavy metals, so that the discharged wastewater can reach the discharge standard, and the use efficiency of the PCB line plate production wastewater heavy metal removal system based on multistage electrolysis is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of multi-stage wastewater treatment, in particular to a PCB (printed circuit board) production wastewater heavy metal removal system based on multi-stage electrolysis. BACKGROUND

[0002] The PCB (printed circuit board) is also called a printed circuit board and is a key component of electronic equipment. During the production of the PCB, a large amount of wastewater is generated, and the wastewater contains various heavy metals such as copper, nickel, lead and zinc, and the concentration is relatively high. In order to ensure that the discharged wastewater meets the discharge standard, workers generally use a multi-stage electrolysis removal system to remove the heavy metals in the wastewater.

[0003] In the prior art, the existing PCB production wastewater heavy metal removal system based on multi-stage electrolysis can perform multi-stage electrolysis treatment on the wastewater to effectively remove the heavy metals in the wastewater. However, the system does not have a detection and auxiliary treatment function. When the multi-stage electrolysis treatment system has been used for a long time to treat the wastewater, the cathode and anode plates in the multi-stage electrolysis treatment system will be oxidized and corroded to different degrees. At this time, the multi-stage electrolysis treatment system that continues to treat the wastewater and does not have a detection function cannot know whether the treated wastewater contains heavy metals, and cannot treat the wastewater again when the treated wastewater contains heavy metals, thereby causing the discharged wastewater to pollute the environment.

[0004] Therefore, a new PCB production wastewater heavy metal removal system based on multi-stage electrolysis is proposed to solve the problems in the background. SUMMARY

[0005] The application aims to provide a PCB production wastewater heavy metal removal system based on multi-stage electrolysis to solve the problem that the existing PCB production wastewater heavy metal removal system based on multi-stage electrolysis does not have a detection and auxiliary treatment function. When the multi-stage electrolysis treatment system has been used for a long time to treat the wastewater, the cathode and anode plates in the multi-stage electrolysis treatment system will be oxidized and corroded to different degrees. At this time, the multi-stage electrolysis treatment system that continues to treat the wastewater and does not have a detection function cannot know whether the treated wastewater contains heavy metals, and cannot treat the wastewater again when the treated wastewater contains heavy metals, thereby causing the discharged wastewater to pollute the environment, and reducing the use efficiency of the PCB production wastewater heavy metal removal system based on multi-stage electrolysis.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a PCB production wastewater heavy metal removal system based on multi-stage electrolysis, comprising a multi-stage electrolysis mechanism, wherein an auxiliary mechanism is arranged on the multi-stage electrolysis mechanism.

[0007] The auxiliary mechanism includes two rectangular blocks, a three-way pipe, a detector, and an electric push rod. Connecting blocks are installed on opposite sides of the two rectangular blocks, and a processing box is fixed between opposite sides of the two connecting blocks. A box cover is installed on the top of the processing box, and a sealing gasket is adhesively connected to the bottom of the box cover. A mesh is fixed to one side of the inner wall of the processing box, and a perforated plate is fixed inside the processing box. A delivery pipe is installed at the water inlet of the processing box, and electric regulating valves are installed at both outlets of the three-way pipe. A connecting plate is installed at the top of the telescopic end of the electric push rod, and an L-shaped rod is fixed to the bottom of the connecting plate. A probe is fixed inside the upper circular hole of the L-shaped rod.

[0008] Preferably, the sealing gasket is movably fitted inside the top opening of the treatment tank, the mesh is located at the water inlet / outlet end of the inner wall of the treatment tank, the top of the perforated plate is in contact with the bottom of the sealing gasket, and the water outlet end of one of the electric regulating valves is installed with the water inlet end of the delivery pipe.

[0009] Preferably, the multi-stage electrolysis mechanism includes a placement rack, the placement rack having three housings inside, the lower side of each housing contacting the top of the placement rack, the top of each housing having a set of mounting slots, and each set of mounting slots having two slots, with an insulating block installed on the bottom of the inner wall of each mounting slot.

[0010] Preferably, a conductive sheet is installed on the top of each insulating block, and a cathode plate is installed at the bottom of one of the conductive sheets in each group. The top of each cathode plate movably penetrates the bottom of the corresponding insulating block. Two partitions are fixed inside the placement frame, and the tops of the two partitions are at the same level as the top of the placement frame. Each partition is located between two adjacent shells.

[0011] Preferably, a placement plate is fixed inside the placement rack, the top of the placement plate and the top of the placement rack are at the same level, the placement plate is located between one side of the inner wall of the placement rack and the outer wall of one of the housings, and an anode plate is installed at the bottom of the other conductive sheet in each group.

[0012] Preferably, the top of each anode plate extends movably through the bottom of the corresponding insulating block, each cathode plate and each anode plate are located inside each housing, a controller is installed on the top of the placement plate, an electric valve is installed at the bottom outlet of each housing, and a filter is installed at the outlet of each electric valve.

[0013] Preferably, each of the filters is equipped with an inlet pipe at its outlet end, and three brackets are fixed on the placement rack. A high-frequency switching power supply is installed at the bottom of each bracket, and a first water pump is installed at the bottom of the inner wall of each bracket. The inlet end of each first water pump is respectively connected to the outlet end of each inlet pipe.

[0014] Preferably, each of the two first water pumps is equipped with a water outlet pipe, each bracket is equipped with an intermediate relay on one side, each housing has an L-shaped pipe fixedly inserted through one side of its inner wall near the top, and a second water pump is installed on the lower side of the placement plate.

[0015] Preferably, the outlet end of the second water pump is equipped with a connecting pipe, the outlet end of the connecting pipe is connected to the inlet end of one of the L-shaped pipes, the outlet ends of the two outlet pipes are respectively connected to the inlet ends of the other two L-shaped pipes, and the two rectangular blocks are fixed on the placement frame.

[0016] Preferably, the inlet end of the three-way pipe is connected to the outlet end of another second water pump, the detector is placed on the top of the placement plate, the electric push rod is installed on the top of the placement frame, the probe is located at the top opening of another housing, and a baffle is fixed to the top of the placement plate near the edge.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention, by setting up an auxiliary mechanism, can detect whether the wastewater after multi-stage electrolysis contains heavy metals, and can further treat the wastewater that still contains heavy metals. This ensures that the discharged wastewater meets the discharge standards and also improves the efficiency of the heavy metal removal system for PCB circuit board production wastewater based on multi-stage electrolysis. When the wastewater inside the third shell completes the electrolysis operation, the probe can be moved down by the cooperation of the controller, electric push rod, connecting plate and L-shaped rod. Then, by the cooperation of the probe and the detector, it can be realized whether the wastewater inside the third shell after electrolysis still contains heavy metal ions.

[0019] 2. When the screen of the detector displays that the treated wastewater contains heavy metal ions, the present invention first utilizes the controller, the corresponding electric valve, the first water pump, one of the electric regulating valves, the corresponding inlet pipe, the delivery pipe, and the corresponding filter to pump the wastewater out of the third housing. During the transportation process, small impurities in the wastewater are filtered out and removed before being transported to a small space composed of a treatment tank and a perforated plate. Then, with the help of the perforated plate, the wastewater entering the small space is evenly transported to a large space composed of the treatment tank and the perforated plate. Next, with the help of the ion exchange resin particles in the large space, the heavy metal ions still contained in the wastewater are adsorbed and removed. Finally, with the help of the treatment tank and the third water pipe, the treated wastewater is transported away.

[0020] 3. This invention, by setting up a multi-stage electrolysis mechanism, can perform multi-stage electrolysis treatment on wastewater, ensuring that the discharged wastewater meets the discharge standards. When multi-stage electrolysis treatment of wastewater is required, the wastewater is first transported to the inside of the first housing by using the cooperation of the second water pump, controller, connecting pipe, and corresponding L-shaped pipe. Then, the controller, corresponding high-frequency switching power supply, corresponding first wire, corresponding second wire, corresponding third wire, and corresponding two conductive plates are used to connect the circuit between the high-frequency switching power supply and the corresponding cathode plate and corresponding anode plate, thereby realizing the electrolysis treatment of the wastewater inside the first housing. When the high-frequency switching power supply is turned off, the controller, corresponding electric valve, corresponding filter, corresponding inlet pipe, corresponding first water pump, and corresponding L-shaped pipe are used to pump away the pre-treated wastewater inside the first housing, filter it, and then transport it to the inside of the second housing.

[0021] 4. When the start-up time of the high-frequency switching power supply corresponding to the second housing is reached, the controller, the corresponding high-frequency switching power supply, the corresponding first wire, the corresponding second wire, the corresponding third wire, and the corresponding two conductive plates are used to connect the circuit between the high-frequency switching power supply and the corresponding cathode plate and the corresponding anode plate, thereby enabling further treatment of the wastewater inside the second housing. When the turn-off time of the high-frequency switching power supply is reached, the controller, the corresponding electric valve, the corresponding filter, the corresponding inlet pipe, the corresponding first water pump, and the corresponding L-shaped pipe are used to pump away the further treated wastewater inside the first housing, filter it, and then transport it to the inside of the third housing.

[0022] 5. When the start-up time of the high-frequency switching power supply corresponding to the third housing arrives, the controller, the corresponding high-frequency switching power supply, the corresponding first wire, the corresponding second wire, the corresponding third wire, and the corresponding two conductive plates are used to connect the circuit between the high-frequency switching power supply and the corresponding cathode plate and the corresponding anode plate. This allows for the re-treatment of the wastewater inside the third housing. When no heavy metal ions are detected in the wastewater inside the third housing, the controller, the corresponding electric valve, the corresponding first water pump, the corresponding other electric regulating valve, the three-way pipe, the corresponding filter, the corresponding inlet pipe, and the second water pipe are used to pump out the wastewater inside the third housing, filter it, and then transport it away. Attached Figure Description

[0023] Figure 1 This is a perspective view of a PCB circuit board manufacturing wastewater heavy metal removal system based on multi-stage electrolysis, according to the present invention.

[0024] Figure 2 This is another perspective view of a heavy metal removal system for PCB circuit board production wastewater based on multi-stage electrolysis, according to the present invention.

[0025] Figure 3 This is a three-dimensional view of a multi-stage electrolysis mechanism in a PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis, according to the present invention.

[0026] Figure 4 This is a bottom-view perspective view of a multi-stage electrolysis-based heavy metal removal system for PCB manufacturing wastewater according to the present invention.

[0027] Figure 5 This is a top-view structural diagram of a PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis according to the present invention.

[0028] Figure 6 This invention relates to a multi-stage electrolysis-based heavy metal removal system for PCB manufacturing wastewater. Figure 4 Enlarged 3D view at point A in the middle;

[0029] Figure 7 This is a perspective view of the auxiliary mechanism of a multi-stage electrolysis-based heavy metal removal system for PCB manufacturing wastewater according to the present invention.

[0030] Figure 8 This is a sectional perspective view of a portion of the auxiliary mechanism of a multi-stage electrolysis-based heavy metal removal system for PCB manufacturing wastewater according to the present invention.

[0031] Figure 9 This is a three-dimensional view of an L-shaped rod representing a multi-stage electrolysis-based heavy metal removal system for PCB manufacturing wastewater.

[0032] In the diagram: 1. Multi-stage electrolysis mechanism; 101. Placement rack; 102. Housing; 103. Mounting slot; 104. Insulating block; 105. Conductive sheet; 106. Cathode plate; 107. Partition plate; 108. Placement plate; 109. Anode plate; 110. Controller; 111. Electric valve; 112. Filter; 113. Inlet pipe; 114. Bracket; 115. High-frequency switching power supply; 116. First water pump; 117. Outlet pipe; 118. Intermediate relay ; 119. L-shaped pipe; 120. Second water pump; 121. Connecting pipe; 2. Baffle; 3. Auxiliary mechanism; 301. Rectangular block; 302. Connecting block; 303. Processing box; 304. Box cover; 305. Sealing gasket; 306. Mesh; 307. Perforated plate; 308. Conveying pipe; 309. T-pipe; 310. Electric regulating valve; 311. Detector; 312. Electric push rod; 313. Connecting plate; 314. L-shaped rod; 315. Probe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-9 As shown, the present invention provides a technical solution: a heavy metal removal system for PCB circuit board production wastewater based on multi-stage electrolysis, including a multi-stage electrolysis mechanism 1, and an auxiliary mechanism 3 is provided on the multi-stage electrolysis mechanism 1;

[0035] The auxiliary mechanism 3 includes two rectangular blocks 301, a three-way pipe 309, a detector 311, and an electric push rod 312. Connecting blocks 302 are installed on opposite sides of the two rectangular blocks 301. A treatment box 303 is fixed between opposite sides of the two connecting blocks 302. A box cover 304 is installed on the top of the treatment box 303, and a sealing gasket 305 is bonded to the bottom of the box cover 304. A mesh 306 is fixed to one side of the inner wall of the treatment box 303. A perforated plate 307 is fixed inside the treatment box 303. A delivery pipe 308 is installed at the water inlet end of the treatment box 303. Electric regulating valves 310 are installed at both outlet ends of the three-way pipe 309. A connecting plate 313 is installed at the top of the telescopic end of the electric push rod 312. An L-shaped rod 314 is fixed to the bottom of the connecting plate 313. The upper circular hole of the L-shaped rod 314... A probe 315 is fixed in place. A sealing gasket 305 is movably fitted inside the top opening of the treatment tank 303. A mesh 306 is located at the water inlet of the water outlet on one side of the inner wall of the treatment tank 303. The top of the perforated plate 307 and the bottom of the sealing gasket 305 are in contact. The water outlet of one of the electric regulating valves 310 is installed with the water inlet of the conveying pipe 308. The multi-stage electrolysis mechanism 1 includes a placement frame 101. Two rectangular blocks 301 are fixed on the placement frame 101. The water inlet of the three-way pipe 309 is installed with the water outlet of another second water pump 120. A detector 311 is placed on the top of the placement plate 108. An electric push rod 312 is installed on the top of the placement frame 101. The probe 315 is located at the top opening of another housing 102. A controller 110 is installed on the top of the placement plate 108.

[0036] In this embodiment, when the wastewater inside the third housing 102 completes the electrolysis operation, the controller 110 activates the electric push rod 312. The activated electric push rod 312 then moves the connected plate 313. The moving connected plate 313, in conjunction with the L-shaped rod 314, moves the probe 315. Simultaneously, the detector 311 is activated. When the probe 315's detection end contacts the wastewater inside the third housing 102, the controller 110 pauses the electric push rod 312. The probe 315, in contact with the wastewater, then, in conjunction with the detector 311, detects whether the wastewater in the third housing 102 contains heavy metal ions. When the screen displays that the treated wastewater contains heavy metal ions, the controller 110 will open the electric valve 111 directly below the third housing 102, the first water pump 116, and one of the electric regulating valves 310. The activated first water pump 116, in conjunction with the connected inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, will pump the re-treated wastewater from the third housing 102. During the transport process, small impurities in the wastewater will be filtered out. Then, through the three-way pipe 309, one of the opened electric regulating valves 310, and the conveying pipe 308, the wastewater is transported to the space composed of the treatment tank 303 and the perforated plate 307 (e.g., Figure 8 As shown, the space here is the small space on the left. Then, the wastewater entering this space will enter the space composed of the perforated plate 307 and the treatment tank 303 through the through holes on the perforated plate 307 (as shown). Figure 8 As shown, the space here is the large space on the right. Then, the heavy metal ions in the wastewater will be adsorbed and removed by the ion exchange resin particles (pre-filled) inside this space. The wastewater that has been treated again will be discharged from the outlet of the treatment tank 303 and enter the interior of the third water pipe, and then be transported away. That is, the wastewater that is still detected to contain heavy metal ions can be treated again before the treated wastewater is discharged.

[0037] Example 2: According to Figures 1-8As shown, the multi-stage electrolysis mechanism 1 includes a placement frame 101. Inside the placement frame 101 are three housings 102. The lower side of each housing 102 contacts the top of the placement frame 101. Each housing 102 has a set of mounting slots 103 on its top, and each set of mounting slots 103 contains two slots. An insulating block 104 is installed on the bottom of the inner wall of each mounting slot 103. A conductive sheet 105 is installed on the top of each insulating block 104. A cathode plate 106 is installed at the bottom of one of the conductive sheets 105 in each set. The top of each cathode plate 106 movably penetrates the bottom of the corresponding insulating block 104. Two partitions 107 are fixed inside the placement frame 101. Furthermore, the tops of the two partitions 107 are at the same level as the top of the placement rack 101. Each partition 107 is located between two adjacent housings 102. A placement plate 108 is fixed inside the placement rack 101. The top of the placement plate 108 is at the same level as the top of the placement rack 101. The placement plate 108 is located between one side of the inner wall of the placement rack 101 and the outer wall of one of the housings 102. An anode plate 109 is installed at the bottom of each other conductive sheet 105 in each group. The top of each anode plate 109 moves through the bottom of the corresponding insulating block 104. Each cathode plate 106 and each anode plate 109 are located inside each housing 102. A controller 110 is installed on the top of unit 8. An electric valve 111 is installed at the bottom outlet of each housing 102. A filter 112 is installed at the outlet of each electric valve 111. An inlet pipe 113 is installed at the outlet of each filter 112. Three brackets 114 are fixed on the mounting rack 101. A high-frequency switching power supply 115 is installed at the bottom of each bracket 114. A first water pump 116 is installed on the bottom inner wall of each bracket 114. The inlet of each first water pump 116 is connected to the outlet of each inlet pipe 113. Two of the first water pumps 116 have outlet pipes 117 installed at their outlets. A middle... The relay 118 has an L-shaped tube 119 fixedly inserted through one side of the inner wall of each housing 102 near the top. A second water pump 120 is installed on the lower side of the placement plate 108. A connecting pipe 121 is installed at the outlet end of the second water pump 120. The outlet end of the connecting pipe 121 is connected to the inlet end of one of the L-shaped tubes 119. The outlet ends of the two water outlet pipes 117 are respectively connected to the inlet ends of the other two L-shaped tubes 119. A baffle 2 is fixed at the top of the placement plate 108 near the edge. The auxiliary mechanism 3 includes two rectangular blocks 301, a three-way pipe 309, a detector 311, and an electric push rod 312. An electric regulating valve 310 is installed at both outlet ends of the three-way pipe 309.

[0038] In this embodiment, when wastewater generated during PCB manufacturing needs to be treated, the controller 110 first starts the second water pump 120. The second water pump 120, in conjunction with the connected first water pipe, transports the wastewater into the connecting pipe 121, then into the corresponding L-shaped pipe 119, and finally into the first housing 102. When a suitable amount of wastewater is injected into the first housing 102, the controller 110 shuts off the second water pump 120, stopping the injection of wastewater into the first housing 102. Then, the controller 110 activates the corresponding intermediate relay 118 (corresponding to the first housing 102) and the corresponding high-frequency switching power supply 115 (corresponding to the first...). When the intermediate relay 118 is energized (housing 102), its normally open contact closes. This connects the corresponding high-frequency switching power supply 115 to the cathode plate 106 and anode plate 109 via the first, second, and third wires and the two conductive plates 105. At this point, the wastewater inside the first housing 102 can undergo electrolysis. When the high-frequency switching power supply 115's off time is reached, the controller 110 shuts off the high-frequency switching power supply 115 and the intermediate relay 118. Then, it opens the electric valve 111 and the first water pump 116 located directly below the first housing 102. The first water pump 116 then activates, connecting to the... With the cooperation of the inlet pipe 113, the corresponding filter 112, and the open electric valve 111, the pre-treated wastewater in the first housing 102 is pumped away. During the transportation process, small impurities in the wastewater are filtered out. Then, through the cooperation of the corresponding outlet pipe 117 and the corresponding L-shaped pipe 119, it is transported to the inside of the second housing 102. When no wastewater is discharged from the outlet end of the corresponding L-shaped pipe 119 on the second housing 102, the controller 110 will shut down the first water pump 116 and the electric valve 111 (the first water pump 116 and electric valve 111 directly below the first housing 102). When the start-up time of the high-frequency switching power supply 115 corresponding to the second housing 102 is reached, the controller 110 will start the... The corresponding high-frequency switching power supply 115 and the corresponding intermediate relay 118 are configured. When the intermediate relay 118 is energized, its normally open contact closes. At this time, the high-frequency switching power supply 115, through the corresponding first wire, the corresponding second wire, the corresponding third wire, and the corresponding two conductive plates 105, connects with the corresponding cathode plate 106 and the corresponding anode plate 109, allowing the wastewater inside the second housing 102 to undergo electrolysis. When the off time of the high-frequency switching power supply 115 is reached, the controller 110 shuts down the high-frequency switching power supply 115 and the intermediate relay 118, and then opens the electric valve 111 and the first water pump 116 located directly below the second housing 102.At this time, the first water pump 116, in conjunction with the connected inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, pumps away the further treated wastewater from the second housing 102. During the transportation process, small impurities in the wastewater are filtered out. Then, through the corresponding outlet pipe 117 and the corresponding L-shaped pipe 119, the wastewater is transported to the interior of the third housing 102. When no wastewater is discharged from the outlet end of the corresponding L-shaped pipe 119 on the third housing 102, the controller 110 shuts down the first water pump 116 and the electric valve 111 (the first water pump 116 and electric valve 111 directly below the second housing 102). When the start-up time of the high-frequency switching power supply 115 corresponding to the third housing 102 is reached, the controller 110 starts the corresponding high-frequency switching power supply 115 and the corresponding intermediate relay 118. When the intermediate relay 118 is energized, its normally open contact closes. At this time, the corresponding high-frequency switching power supply 115 will flow through the corresponding first wire, the corresponding second wire, and the corresponding third wire. The wires and the corresponding two conductive plates 105 are connected to the circuit between the corresponding cathode plate 106 and the corresponding anode plate 109. At this time, the wastewater inside the third housing 102 can undergo electrolysis. When the high-frequency switching power supply 115 reaches its off time, the controller 110 will turn off the high-frequency switching power supply 115 and the intermediate relay 118. When no heavy metal ions are detected in the wastewater inside the third housing 102, the controller 110 will open the electric valve 111, the first water pump 116, and the other electric regulating valve 310 directly below the third housing 102. The first water pump 116, in cooperation with the inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, will pump away the wastewater that has been treated again in the third housing 102. During the transportation process, small impurities in the wastewater will be filtered out. Then, through the cooperation of the three-way pipe 309, the other opened electric regulating valve 310, and the second water pipe, the wastewater will be transported away. That is, through multi-stage electrolysis, the discharged wastewater can meet the discharge standards. ,

[0039] The overall mechanism and its working principle are as follows: When wastewater generated during PCB circuit board production needs to be treated, first connect all high-frequency switching power supplies 115 and controllers 110 to an external power source. Then connect the outlet of the first water pipe to the inlet of the second water pump 120, connect the inlet of the second water pipe to the outlet of another electric regulating valve 310, and connect the inlet of the third water pipe to the outlet of the treatment tank 303. Next, turn on the controller 110 and set the voltage, current, and start / stop time of each high-frequency switching power supply 115. When everything is ready, first use the controller 110 to start the second water pump 120. At this point, starting the second water pump 120 will, in conjunction with the first water pipe connected to it, transport wastewater into the connecting pipe 121, then into the corresponding L-shaped pipe 119, and finally into the first housing 102. When a suitable amount of wastewater has been injected into the first housing 102, the controller 110 will shut down the second water pump 120, stopping the injection of wastewater into the first housing 102. Then, the controller 110 will activate the corresponding intermediate relay 118 (corresponding to the first housing 102) and the corresponding high-frequency switching power supply 115 (corresponding to the first housing 102). When the intermediate relay 118 is energized, its normally open contact closes, and the corresponding high-frequency switching power supply 115 will then... Through the corresponding first wire, second wire, third wire, and two conductive plates 105, the circuit between the corresponding cathode plate 106 and anode plate 109 is connected, allowing the wastewater inside the first housing 102 to undergo electrolysis. When the high-frequency switching power supply 115 reaches its off time, the controller 110 shuts down the high-frequency switching power supply 115 and the intermediate relay 118, and then opens the electric valve 111 and the first water pump 116 located directly below the first housing 102. The activated first water pump 116, in conjunction with the connected inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, pumps away the pre-treated wastewater from the first housing 102. During the transportation process, small impurities in the wastewater are filtered out. The wastewater is then transported to the interior of the second housing 102 via the corresponding outlet pipe 117 and the corresponding L-shaped pipe 119. When no wastewater is discharged from the outlet end of the corresponding L-shaped pipe 119 on the second housing 102, the controller 110 shuts down the first water pump 116 and the electric valve 111 (located directly below the first housing 102). When the start-up time of the high-frequency switching power supply 115 corresponding to the second housing 102 is reached, the controller 110 starts the corresponding high-frequency switching power supply 115 and the corresponding intermediate relay 118. When the intermediate relay 118 is energized, its normally open contact closes.At this time, the corresponding high-frequency switching power supply 115 will connect with the corresponding cathode plate 106 and anode plate 109 through the corresponding first wire, the corresponding second wire, the corresponding third wire and the corresponding two conductive plates 105. At this time, the wastewater inside the second housing 102 can undergo electrolysis. When the off time of the high-frequency switching power supply 115 is reached, the controller 110 will turn off the high-frequency switching power supply 115 and the intermediate relay 118, and then open the electric valve 111 and the first water pump 116 directly below the second housing 102. The first water pump 116, which is started at this time, will, in cooperation with the connected water inlet pipe 113, the corresponding filter 112 and the opened electric valve 111, fill the second housing with water. The further treated wastewater in 102 is pumped away, and during the transportation process, small impurities in the wastewater are filtered out. Then, through the corresponding outlet pipe 117 and the corresponding L-shaped pipe 119, it is transported to the interior of the third housing 102. When no wastewater is discharged from the outlet end of the corresponding L-shaped pipe 119 on the third housing 102, the controller 110 will shut down the first water pump 116 and the electric valve 111 (the first water pump 116 and electric valve 111 directly below the second housing 102). When the start-up time of the high-frequency switching power supply 115 corresponding to the third housing 102 is reached, the controller 110 will start the corresponding high-frequency switching power supply 115 and the corresponding intermediate relay 118. When the intermediate relay 118 is energized, the intermediate... When the normally open contact of the intermediate relay 118 closes, the corresponding high-frequency switching power supply 115, through the corresponding first wire, the corresponding second wire, the corresponding third wire, and the corresponding two conductive plates 105, connects to the corresponding cathode plate 106 and the corresponding anode plate 109, allowing the wastewater inside the third housing 102 to undergo electrolysis. When the off time of the high-frequency switching power supply 115 is reached, the controller 110 shuts down the high-frequency switching power supply 115 and the intermediate relay 118, and then activates the electric push rod 312. The activated electric push rod 312 moves the connected connecting plate 313, which, with the assistance of the L-shaped rod 314, moves the probe 315. Simultaneously, the detector 311 is activated. When the probe 315 contacts the wastewater inside the third housing 102, the controller 110 pauses the electric push rod 312. The probe 315, in conjunction with the detector 311, then detects whether the wastewater in the third housing 102 contains heavy metal ions. If the detector 311's screen does not display any heavy metal ions in the treated wastewater, the controller 110 opens the electric valve 111 directly below the third housing 102, the first water pump 116, and another electric regulating valve 310. The activated first water pump 116, in conjunction with the connected inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, then...The wastewater, after being treated again, is pumped out of the third housing 102. During the transportation process, small impurities in the wastewater are filtered out. Then, it is transported away through the three-way pipe 309, another open electric regulating valve 310, and the second water pipe. When the screen of the detector 311 displays that the treated wastewater contains heavy metal ions, the controller 110 will open the electric valve 111 directly below the third housing 102, the first water pump 116, and one of the electric regulating valves 310. At this time, the first water pump 116, in conjunction with the inlet pipe 113, the corresponding filter 112, and the opened electric valve 111, pumps the wastewater, after being treated again, from the third housing 102. During the transportation process, small impurities in the wastewater are filtered out. Then, it is transported through the three-way pipe 309, one of the open electric regulating valves 310, and the delivery pipe 308 to the space composed of the treatment tank 303 and the perforated plate 307 (e.g., Figure 8 As shown, the space here is the small space on the left. Then, the wastewater entering this space will enter the space composed of the perforated plate 307 and the treatment tank 303 through the through holes on the perforated plate 307 (as shown). Figure 8 As shown, the space here is the large space on the right. Then, the heavy metal ions in the wastewater will be adsorbed and removed by the ion exchange resin particles (pre-filled) inside this space. The wastewater that has been treated again will be discharged from the outlet of the treatment tank 303 and enter the interior of the third water pipe, and then be transported away.

[0040] Each intermediate relay 118 is connected to each conductive plate 105 (corresponding to the anode plate 109) via a first wire, each intermediate relay 118 is connected to each high-frequency switching power supply 115 via a second wire, each high-frequency switching power supply 115 is connected to each conductive plate 105 (corresponding to the cathode plate 106) via a third wire, and each intermediate relay 118, each high-frequency switching power supply 115, each electric valve 111, each first water pump 116, each second water pump 120, each electric regulating valve 310, and each electric push rod 312 are electrically connected to the controller 110.

[0041] Among them, such as Figure 8 As shown, the steps for filling the large space on the right with ion exchange resin particles are as follows: First, remove the cover 304. Then, use the cover 304 to pull the sealing gasket 305 out from the top opening of the processing box 303. Next, inject an appropriate amount of ion exchange resin particles directly into the large space through the top opening of the processing box 303. After that, return the cover 304 and the sealing gasket 305 to their original positions.

[0042] Among them, such as Figure 1 As shown, the three housings 102 are one housing 102, one middle housing 102, and one other housing 102.

[0043] Among them, conductive sheet 105, cathode plate 106, anode plate 109, controller 110 (PLC controller), electric valve 111, filter 112 (composed of processing shell, shell cover and filter screen), high frequency switching power supply 115, first water pump 116, intermediate relay 118, second water pump 120, electric regulating valve 310, detector 311, electric push rod 312 and probe 315 are all existing technologies, and their models can be selected according to the actual situation. They will not be explained in detail here.

[0044] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A heavy metal removal system for PCB circuit board manufacturing wastewater based on multi-stage electrolysis, characterized in that: It includes a multi-stage electrolysis mechanism (1), and an auxiliary mechanism (3) is provided on the multi-stage electrolysis mechanism (1). The auxiliary mechanism (3) includes two rectangular blocks (301), a three-way pipe (309), a detector (311), and an electric push rod (312). Connecting blocks (302) are installed on opposite sides of the two rectangular blocks (301), and a processing box (303) is fixed between the opposite sides of the two connecting blocks (302). A box cover (304) is installed on the top of the processing box (303), and a sealing gasket (305) is adhesively connected to the bottom of the box cover (304). The inner wall of the processing box (303) is... A mesh (306) is fixed to the side. A perforated plate (307) is fixed inside the treatment box (303). A conveying pipe (308) is installed at the water inlet end of the treatment box (303). Electric regulating valves (310) are installed at both water outlet ends of the three-way pipe (309). A connecting plate (313) is installed at the top of the telescopic end of the electric push rod (312). An L-shaped rod (314) is fixed at the bottom of the connecting plate (313). A probe (315) is fixed inside the upper round hole of the L-shaped rod (314). The multi-stage electrolysis mechanism (1) includes a placement rack (101), inside which are three housings (102). The lower side of each housing (102) is in contact with the top of the placement rack (101). Each housing (102) has a set of mounting slots (103) on its top, and each set of mounting slots (103) has two slots. An insulating block (104) is installed on the bottom of the inner wall of each mounting slot (103). A placement plate (108) is fixed inside the placement rack (101). The bottom of each housing (102) Each outlet end is equipped with an electric valve (111), and each outlet end of the electric valve (111) is equipped with a filter (112). Each outlet end of the filter (112) is equipped with an inlet pipe (113). Three brackets (114) are fixed on the placement rack (101). A high-frequency switching power supply (115) is installed at the bottom of each bracket (114). A first water pump (116) is installed on the bottom of the inner wall of each bracket (114). The inlet end of each first water pump (116) is connected to the outlet end of each inlet pipe (113). Each of the two first water pumps (116) has an outlet pipe (117) installed at its outlet end. An intermediate relay (118) is installed on one side of each bracket (114). An L-shaped pipe (119) is fixedly inserted through one side of the inner wall of each housing (102) near the top. A second water pump (120) is installed on the lower side of the placement plate (108). A connecting pipe (121) is installed at the outlet end of the second water pump (120). The outlet end of the connecting pipe (121) is connected to the inlet end of one of the L-shaped pipes (119). The two outlet pipes (117) are connected in series. The outlet of 7) is installed with the inlet of the other two L-shaped pipes (119), the two rectangular blocks (301) are fixed on the placement frame (101), the inlet of the three-way pipe (309) is installed with the outlet of another second water pump (120), the detector (311) is placed on the top of the placement plate (108), the electric push rod (312) is installed on the top of the placement frame (101), the probe (315) is located at the top opening of another housing (102), and a baffle (2) is fixed on the top of the placement plate (108) near the edge.

2. The PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis according to claim 1, characterized in that: The sealing gasket (305) is movably fitted inside the top opening of the treatment tank (303). The mesh (306) is located at the water inlet of the water outlet on one side of the inner wall of the treatment tank (303). The top of the perforated plate (307) is in contact with the bottom of the sealing gasket (305). The water outlet of one of the electric regulating valves (310) is installed with the water inlet of the conveying pipe (308).

3. The PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis according to claim 1, characterized in that: Each insulating block (104) has a conductive sheet (105) mounted on its top. A cathode plate (106) is mounted on the bottom of one of the conductive sheets (105) in each group. The top of each cathode plate (106) is movable through the bottom of the corresponding insulating block (104). The placement rack (101) has two partitions (107) fixed inside. The tops of the two partitions (107) are on the same horizontal plane as the top of the placement rack (101). Each partition (107) is located between two adjacent shells (102).

4. The PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis according to claim 3, characterized in that: The top of the placement plate (108) and the top of the placement rack (101) are on the same horizontal plane. The placement plate (108) is located between the inner wall of the placement rack (101) and the outer wall of one of the housings (102). An anode plate (109) is installed at the bottom of the other conductive sheet (105) in each group.

5. The PCB circuit board production wastewater heavy metal removal system based on multi-stage electrolysis according to claim 4, characterized in that: The top of each anode plate (109) is movable through the bottom of the corresponding insulating block (104), each cathode plate (106) and each anode plate (109) are located inside each housing (102), and a controller (110) is installed on the top of the placement plate (108).

Images