Combined PCB (printed circuit board) production wastewater pretreatment filtering device

Abstract

The invention discloses a combined PCB production wastewater pretreatment filtering device, and relates to the technical field of industrial wastewater treatment.The combined PCB production wastewater pretreatment filtering device comprises a wastewater feeding pump, the side end of the wastewater feeding pump is communicated with a conveying pipe, the side end of the conveying pipe is communicated with a nano-composite filtering chamber, and the side end of the nano-composite filtering chamber is communicated with a communicating guide pipe; under the cooperation of the unitized adjusting control assembly, a cooperative treatment mode is integrally formed, the pretreatment filtering efficiency and quality of wastewater are improved, the pressure of subsequent treatment is reduced, and by accurately controlling the adding amount of chemical agents, the wastewater treatment efficiency and quality are improved. The controllability and economical efficiency of the treatment process are improved, so that the device can adapt to wastewater generated by different PCB production processes, the universality and adaptability of the device are improved, and the wastewater purification effect is improved under the cooperation of the graded filtering and purifying assembly.

Description

Technical Field

[0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a combined PCB circuit board production wastewater pretreatment filtering device. Background Art

[0002] With the rapid development of the electronics industry, the production scale of PCB (Printed Circuit Board) circuit boards has been continuously expanded. In the process of PCB production, a large amount of wastewater containing heavy metals (such as copper, nickel, lead, tin, etc.), organic pollutants (such as photoresist, flux, ink, etc.), ammonia nitrogen, acids and alkalis and other harmful substances will be generated. If these wastewaters are directly discharged without effective treatment, they will cause serious pollution to the environment, such as contaminating surface water, soil and groundwater, affecting the ecological balance and endangering human health.

[0003] The existing devices are not ideal for removing heavy metal ions and organic pollutants in PCB wastewater, and it is difficult to meet strict emission standards. In particular, for some low-concentration but highly toxic heavy metal ions and difficult-to-degrade organic pollutants, traditional filtering and treatment methods often cannot effectively remove them. The wastewater quality generated by different PCB production processes varies greatly, and the existing pretreatment filtration devices lack adaptability to water quality changes, resulting in the inability to flexibly adjust according to the specific composition and concentration of the wastewater, resulting in unstable treatment effects. Therefore, it is necessary to propose a combined PCB circuit board production wastewater pretreatment filtration device. Summary of the invention

[0004] The purpose of the present invention is to provide a combined PCB circuit board production wastewater pretreatment filtering device to solve the problem that the removal effect of heavy metal ions and organic pollutants in PCB wastewater is not ideal and it is difficult to meet strict emission standards, especially for some low-concentration but highly toxic heavy metal ions and difficult-to-degrade organic pollutants, traditional filtering and treatment methods often cannot effectively remove them. The water quality of wastewater generated by different PCB production processes varies greatly, and the existing pretreatment filtering device lacks adaptability to changes in water quality, resulting in the inability to flexibly adjust according to the specific composition and concentration of the wastewater, resulting in unstable treatment effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined PCB production wastewater pretreatment filtration device, comprising a wastewater feed pump, the side end of the wastewater feed pump is connected to a delivery pipe, the side end of the delivery pipe is connected to a nano-composite filter chamber, the side end of the nano-composite filter chamber is connected to a connecting guide pipe, the top end of the connecting guide pipe is installed with an electrode connection replacement chamber, the top end of the electrode connection replacement chamber is installed with an electric field control generator, the electrode group installed inside the connecting guide pipe is connected to the electric field control generator through a conductive joint, the side end of the connecting guide pipe is connected to a discharge pipe, and the side end of the connecting guide pipe is installed with a unitized adjustment and control component;

[0006] The unitized regulating and controlling component comprises a processing chamber, the top of the processing chamber is connected with a discharge valve pipe, the bottom of the discharge valve pipe is connected with a classified appropriate amount of guide pump, the bottom of the classified appropriate amount of guide pump is connected with a classified guide valve pipe, a plurality of unit filter chambers are installed at the bottom of the classified guide valve pipe, a metering dosing pump is installed on the inner wall surface of the plurality of unit filter chambers, an ion exchange membrane and a vortex generator are installed inside the plurality of unit filter chambers, an electric valve is installed at the bottom of the plurality of unit filter chambers, and a guide groove is connected at the bottom of the processing chamber. The bottom of the guide groove is connected to a waste discharge valve pipe, and the sides of the multiple groups of unit filter chambers are equipped with electrically controlled iris valves. The side ends of the unit filter chambers are connected to pumping pipes, and the tops of the pumping pipes are connected to pumping pumps, and the tops of the pumping pumps are connected to pumping pipes, and the tops of the pumping pipes are connected to magnetic field particle control consoles, and the bottom ends of the magnetic field particle control consoles are symmetrically connected to discharge pipes, and the side ends of the magnetic field particle control consoles are connected to magnetic particle discharge circulation pipes, and the bottom ends of the discharge pipes are connected to discharge guide grooves, and the side ends of the discharge guide grooves are connected to forward osmosis membrane filter chambers.

[0007] Preferably, a filter pool is installed on the side of the connecting guide pipe, an ultrafiltration membrane is installed inside the filter pool, the bottom end of the filter pool is connected to a discharge valve pipe, and the side end of the pumping pipe is connected to a valve pipe.

[0008] Preferably, a displacement frame is slidably connected to the top of the filter tank, a movable sliding column is slidably connected to the side end of the displacement frame, and a sliding rack is fastened to the other side end surface of the displacement frame.

[0009] Preferably, the top surface of the filter tank is fastened with a driving motor, the bottom output end of the driving motor is connected with a rotating gear, the rotating gear is meshed with a sliding rack, and the sliding rack is slidably connected to the top inner wall of the filter tank.

[0010] Preferably, a plasma control generator is symmetrically installed on the top of the displacement frame, and a plasma generation regulating end is connected to the bottom end of the plasma control generator.

[0011] Preferably, the bottom of the forward osmosis membrane filtration chamber is connected to a secondary flow valve tube, the side end of the secondary flow valve tube is connected to a graded filtration purification component, the side of the treatment chamber is connected to a feed box through a metering control tube, and the side end of the feed box is connected to a side branch feed tube (21).

[0012] Preferably, the graded filtration purification component includes a purification chamber, a cation filter frame is installed at the bottom end of the purification chamber, and a capacitive deionization structure is installed inside the purification chamber, and the capacitive deionization structure is composed of a high-conductivity electrode, a current collector and an electrolyte solution guide groove.

[0013] Preferably, the side end surfaces of the purification chamber are respectively provided with an exhaust end and a waste end, an exchange membrane is installed at the inner middle end of the purification chamber, and a pumping guide tube is installed at the top end of the exchange membrane.

[0014] Preferably, a filtering and purifying drainage pool is installed at the bottom of the side end of the pumping liquid guiding tube, the side of the pumping liquid guiding tube is connected to a liquid extraction detection tube, and the side end of the liquid extraction detection tube is connected to a detector.

[0015] Preferably, the bottom end of the detector is connected to the side end of the bottom control valve of the pumping catheter, and the other side end of the bottom control valve of the pumping catheter is provided with a circulation pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, after the wastewater enters the treatment chamber, according to the treatment requirements and the nature of the wastewater, the treated wastewater is transported to the magnetic field particle control console through the valve pipe by using the classified appropriate amount of guide pump, discharge valve pipe, unit filter chamber, ion exchange membrane, vortex generator, metering dosing pump, electric valve and guide groove, so that the magnetic field particle control console can transport an appropriate amount of magnetic particles into the inside according to the nature of the wastewater and the treatment requirements. Then, the wastewater enters the forward osmosis membrane filter chamber. Under the action of the forward osmosis membrane, water molecules pass through the membrane driven by osmotic pressure, while salt and other pollutants are intercepted, so as to achieve further purification and concentration. The treated wastewater is discharged through the discharge pipe, and the treated wastewater is discharged through the discharge pipe. The waste generated in the process is discharged through the waste discharge valve pipe for subsequent treatment. In the above-mentioned wastewater treatment process, the water quality parameters of the wastewater are monitored in real time by the sensor group (pH sensor, heavy metal ion sensor and conductivity sensor) installed in various positions. When the sensor group detects that the concentration of a certain pollutant in the wastewater increases or exceeds the preset range, the external PLC controller automatically adjusts the treatment process, so that the overall coordinated treatment mode is formed, the pre-treatment filtration efficiency and quality of the wastewater are improved, the pressure of subsequent treatment is reduced, and the controllability and economy of the treatment process are improved by accurately controlling the dosage of chemical agents, so that the device can adapt to the wastewater generated by different PCB production processes, and the versatility and adaptability of the device are improved.

[0018] 2. In the present invention, with the cooperation of the graded filtration purification component, the wastewater enters the purification chamber of the graded filtration purification component from the secondary delivery flow valve pipe, and the wastewater flows through the cation filter frame. The filter frame uses its special structure and material to selectively filter the cations. For example, the cation filter frame can be a structure containing special ion exchange resins or adsorbent materials, which can preferentially adsorb and remove certain cations in the wastewater, such as heavy metal cations such as copper ions and iron ions, so that the cation content of the wastewater is initially reduced. Then, the wastewater enters the capacitor deionization structure for treatment. The high-conductivity capacitor deionization structure is used to remove the cations. After the voltage is applied to the electrode, an electric field will be formed in the electrolyte solution guide groove. The ions in the wastewater will migrate under the action of the electric field. The charged ions will be adsorbed by the highly conductive electrode to achieve ion removal. The function of the current collector is to collect and conduct electrons on the electrode to ensure the stability and uniformity of the electric field. Through the above, the ions in the wastewater are further removed, especially some ions that are difficult to remove by chemical precipitation or ion exchange, thereby improving the purity of the wastewater. The wastewater treated as above continues to flow upward and passes through the exchange membrane. The exchange membrane is used to further separate or exchange specific substances in the wastewater, thereby improving the purification effect of the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the main structure of a combined PCB production wastewater pretreatment and filtering device of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a side view of a combined PCB circuit board production wastewater pretreatment and filtering device of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal cross-sectional structure of a unitized regulating and controlling component in a combined PCB production wastewater pretreatment and filtering device of the present invention;

[0022] Figure 4 The present invention is a combined PCB circuit board production wastewater pretreatment filtering device Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 5 It is a partial structural schematic diagram of a unitized regulating and controlling component in a combined PCB production wastewater pretreatment and filtering device of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a graded filtering and purification component in a combined PCB circuit board production wastewater pretreatment filtering device of the present invention;

[0025] Figure 7 The present invention is a schematic diagram of the internal structure of a graded filtration and purification component in a combined PCB circuit board production wastewater pretreatment filtration device.

[0026] In the figure: 1, wastewater feed pump; 2, delivery pipe; 3, nanocomposite filter chamber; 4, connecting guide pipe; 5, electrode connection replacement chamber; 6, discharge pipe; 7, electric field control generator; 8, filter tank; 9, displacement rack; 10, plasma control generator; 11, unitized adjustment control component; 110, treatment chamber; 111, discharge valve pipe; 112, classified appropriate guide pump; 113, classified guide valve pipe; 114, pumping pipe; 115, electric valve; 116, guide groove; 117, waste discharge valve pipe; 118, pumping pump; 119, pumping pipe; 1190, magnetic field particle control console; 1191, discharge guide groove; 1192, forward osmosis membrane filter chamber; 1193, discharge pipe; 1194, metering dosing pump; 1195, unit filter chamber; 12, valve pipe; 13, feed box; 14, secondary delivery flow valve pipe; 15, graded filtration and purification component; 150, purification chamber; 151, exhaust end; 152, waste end; 153, pumping and liquid guiding pipe; 154, detector; 155, liquid extraction and detection tube; 156, cation filter rack; 157, capacitor deionization structure; 158, exchange membrane; 159, circulation pipe; 16, filtration and purification discharge tank; 17, ultrafiltration membrane; 18, driving motor; 19, rotating gear; 20, sliding rack; 21, side branch guide pipe; 22, plasma generation and regulation end. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1, in this embodiment, refer to Figure 1 - Figure 7 As shown: a combined PCB circuit board production wastewater pretreatment filtering device, comprising a wastewater feed pump 1, the side end of the wastewater feed pump 1 is connected with a delivery pipe 2, the side end of the delivery pipe 2 is connected with a nano-composite filter chamber 3, the side end of the nano-composite filter chamber 3 is connected with a connecting guide pipe 4, the top end of the connecting guide pipe 4 is installed with an electrode connection replacement chamber 5, the top end of the electrode connection replacement chamber 5 is installed with an electric field control generator 7, the electrode group installed inside the connecting guide pipe 4 is connected to the electric field control generator 7 through a conductive joint, the side end of the connecting guide pipe 4 is connected with a discharge pipe 6, and the side end of the connecting guide pipe 4 is installed with a unitized adjustment control component 11;

[0029] The unitized regulating and controlling assembly 11 comprises a processing chamber 110, wherein the top of the processing chamber 110 is connected to a discharge valve pipe 111, the bottom of the discharge valve pipe 111 is connected to a classified and appropriate amount of guide pump 112, the bottom of the classified and appropriate amount of guide pump 112 is connected to a classified and guide valve pipe 113, the bottom of the classified and guide valve pipe 113 is installed with a plurality of unit filter chambers 1195, the inner wall surface of the plurality of unit filter chambers 1195 is installed with a metering pump 1194, the interior of the plurality of unit filter chambers 1195 is respectively installed with an ion exchange membrane and a vortex generator, the bottom of the plurality of unit filter chambers 1195 is installed with an electric valve 115, the bottom of the processing chamber 110 is connected to a guide groove 116, the guide groove 1195 is connected to the bottom of the processing chamber 110, and the guide groove 116 is connected to the bottom of the processing chamber 110. The bottom of 16 is connected to a waste discharge valve pipe 117, and the sides of multiple groups of unit filter chambers 1195 are equipped with electrically controlled iris valves. The side ends of the unit filter chambers 1195 are connected to pumping pipes 114, and the tops of the pumping pipes 114 are connected to pumping pumps 118. The tops of the pumping pumps 118 are connected to pumping pipes 119, and the tops of the pumping pipes 119 are connected to magnetic field particle control consoles 1190. The bottom ends of the magnetic field particle control consoles 1190 are symmetrically connected to discharge pipes 1193, and the side ends of the magnetic field particle control consoles 1190 are connected to magnetic particle discharge circulation pipes. The bottom ends of the discharge pipes 1193 are connected to discharge guide grooves 1191, and the side ends of the discharge guide grooves 1191 are connected to forward osmosis membrane filter chambers 1192.

[0030] In a specific scheme, the wastewater feed pump 1 is first started to transport the wastewater produced by the PCB circuit board to the nano-composite filter chamber 3 through the delivery pipe 2, so that the nano-composite filter material in the nano-composite filter chamber 3 uses its special nano-structure and surface properties to preliminarily filter and adsorb larger suspended particles, some colloidal substances, and some easily adsorbed heavy metal ions and organic pollutants in the wastewater. For example, the filter material composited with nano-activated carbon and nano-metal oxide can remove some pollutants in the wastewater through physical adsorption and chemical adsorption. The wastewater after preliminary filtration enters the subsequent treatment unit through the connecting guide pipe 4. In this process, the electric field control generator 7 is connected to the electrode group in the connecting guide pipe 4 to generate a certain The strong electric field affects the movement of charged particles in the wastewater, further assisting in the removal of some charged pollutants, such as some heavy metal ions that migrate to the electrode surface and are adsorbed under the action of the electric field. When the wastewater enters the treatment chamber 110, according to the treatment requirements and the nature of the wastewater, the classified and appropriate amount of guide pump 112 distributes the wastewater to different unit filter chambers 1195 through the discharge valve pipe 111. For example, when a certain specific pollutant concentration in the wastewater is detected to be high, the water supply to the unit filter chamber with a better treatment effect for the pollutant can be increased. In the unit filter chamber 1195, the ion exchange membrane exchanges and removes specific ions in the wastewater according to its selective permeability characteristics, so that the cation exchange membrane removes heavy metals in the wastewater. Cations, such as copper ions, nickel ions, etc., are exchanged for hydrogen ions. At the same time, the vortex flow generated by the vortex generator can enhance the contact and mixing of wastewater and filter media, improve the treatment efficiency, and then the metering pump 1194 accurately adds chemical agents, such as flocculants, reducing agents, etc. according to the real-time monitoring data during the treatment process, to further promote the precipitation and removal of pollutants. Part of the wastewater treated by the unit filter chamber 1195 enters the guide groove 116 through the electric valve 115. If the wastewater still does not meet the discharge standard, it can be pumped back to the pumping pipe 119 through the pumping pipe 114 and the pumping pump 118, and transported to the magnetic field particle console 1190 through the valve pipe 12, so that the magnetic field particle console 1190 can be adjusted according to the properties of the wastewater. According to the quality and treatment requirements, an appropriate amount of magnetic particles are transported into the interior thereof, and the magnetic particles are used to interact with pollutants in the wastewater to adsorb or aggregate certain organic pollutants or heavy metal ions to form larger particles. Then, the treated liquid is transported to the discharge guide groove 1191 through the discharge pipe 1193, and the formed aggregated heavy metal ion clusters are connected to the external treatment chamber through the magnetic particle discharge circulation pipe, and then they are treated, and the magnetic particles are returned to the magnetic field particle console 1190. Then, the wastewater enters the forward osmosis membrane filtration chamber 1192. Under the action of the forward osmosis membrane, water molecules pass through the membrane driven by osmotic pressure, while salts and other pollutants are retained, thereby achieving further purification and concentration. The treated wastewater is discharged through the discharge pipe 6.The waste generated during the treatment process is discharged through the waste discharge valve pipe 117 for subsequent treatment. In the above wastewater treatment process, the water quality parameters of the wastewater are monitored in real time by the sensor group (pH sensor, heavy metal ion sensor and conductivity sensor) installed at various locations. When the sensor group detects that the concentration of a certain pollutant in the wastewater increases or exceeds the preset range, the external PLC controller automatically adjusts the treatment process, so that the overall coordinated treatment method is formed, the pre-treatment filtration efficiency and quality of the wastewater are improved, the pressure of subsequent treatment is reduced, and the controllability and economy of the treatment process are improved by accurately controlling the dosage of chemical agents, so that the device can adapt to the wastewater generated by different PCB production processes, and improve the versatility and adaptability of the device.

[0031] Embodiment 2, in this embodiment, according to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a filter pool 8 is installed on the side of the connecting guide pipe 4, an ultrafiltration membrane 17 is installed inside the filter pool 8, the bottom end of the filter pool 8 is connected to the discharge valve pipe 111, and the side end of the pumping pipe 119 is connected to the valve pipe 12.

[0032] The top of the filter tank 8 is slidably connected to a displacement frame 9 , the side end of the displacement frame 9 is slidably connected to a movable sliding column, and the other side end surface of the displacement frame 9 is fastened to a sliding rack 20 .

[0033] The top surface of the filter tank 8 is fastened with a driving motor 18, and the bottom output end of the driving motor 18 is connected to a rotating gear 19, which is meshed with a sliding rack 20, and the sliding rack 20 is located on the top inner wall of the filter tank 8 and is slidably connected.

[0034] The top of the displacement frame 9 is symmetrically mounted with a plasma control generator 10 , and the bottom of the plasma control generator 10 is connected with a plasma generation regulating end 22 .

[0035] The bottom of the forward osmosis membrane filtration chamber 1192 is connected to the secondary delivery flow valve tube 14, the side end of the secondary delivery flow valve tube 14 is connected to the graded filtration purification component 15, the side of the treatment chamber 110 is connected to the feed box 13 through the metering control tube, and the side end of the feed box 13 is connected to the side branch feed pipe 21.

[0036] In a specific scheme, when the above-mentioned wastewater flows into the filter tank 8 through the discharge pipe 6, the drive motor 18 is started, driving the rotating gear 19 to rotate. Since the rotating gear 19 is meshed with the sliding rack 20, the displacement frame 9 slides along the inner wall of the top of the filter tank 8, and the plasma control generator 10 on the displacement frame 9 moves accordingly. The plasma generation and regulation end 22 at its bottom can perform plasma treatment on the wastewater in the filter tank 8 at different positions, and the ultrafiltration membrane 17 ultrafilters the wastewater after plasma treatment. The filtered water enters the subsequent treatment unit through the discharge valve pipe 111, and the retained substances remain in the filter tank 8 for subsequent cleaning. The guide box 13 transports the required treatment materials, such as flocculants, neutralizers, etc., to the metering dosing pump 1194 through the metering control pipe. At the same time, the side branch guide pipe 21 can also be used as a supplement or adjustment of the material transportation path. The plasma treatment is combined with the ultrafiltration membrane filtration as a whole, so that the organic pollutants in the wastewater can be more effectively removed in the early stage of pretreatment, reducing the pressure of subsequent unit treatment.

[0037] Embodiment 3, in this embodiment, according to Figure 6 and Figure 7 As shown, the graded filtration purification component 15 includes a purification chamber 150, a cation filter frame 156 is installed at the bottom end of the purification chamber 150, and a capacitive deionization structure 157 is installed inside the purification chamber 150. The capacitive deionization structure 157 is composed of a high-conductivity electrode, a current collector and an electrolyte solution guide groove.

[0038] An exhaust port 151 and a waste port 152 are respectively provided on the side end surfaces of the purification chamber 150 . An exchange membrane 158 is installed at the middle end of the interior of the purification chamber 150 . A pumping guide tube 153 is installed at the top end of the exchange membrane 158 .

[0039] A filtering and purifying discharge pool 16 is installed at the bottom of the side end of the pumping liquid conveying pipe 153 , and a liquid extraction detection pipe 155 is connected to the side of the pumping liquid conveying pipe 153 , and a detector 154 is connected to the side end of the liquid extraction detection pipe 155 .

[0040] The bottom end of the detector 154 is connected to the side end of the bottom control valve of the pumping guide tube 153, and the other side end of the bottom control valve of the pumping guide tube 153 is provided with a circulation tube 159.

[0041] In a specific scheme, wastewater enters the purification chamber 150 of the graded filtration and purification component 15 from the secondary delivery flow valve tube 14, and the wastewater flows through the cation filter frame 156. The filter frame uses its special structure and material to selectively filter cations. For example, the cation filter frame 156 can be a structure containing special ion exchange resins or adsorbent materials, which can preferentially adsorb and remove certain cations in the wastewater, such as heavy metal cations such as copper ions and iron ions, so that the cation content of the wastewater is initially reduced. Then, the wastewater enters the capacitor deionization structure 157 for treatment. After the voltage is applied, the high-conductivity electrodes in the capacitor deionization structure 157 will form an electric field in the electrolyte solution guide groove. The ions in the wastewater migrate under the action of the electric field, and the charged ions therein will be adsorbed by the high-conductivity electrodes to achieve ion removal. The function of the current collector is to collect and conduct electrons on the electrodes to ensure the stability and uniformity of the electric field. Through the above, the ions in the wastewater are further removed. ions, especially some ions that are difficult to be removed by chemical precipitation or ion exchange, to improve the purity of the wastewater. The wastewater treated as above continues to flow upward and passes through the exchange membrane 158. The exchange membrane 158 is used to further separate or exchange specific substances in the wastewater to improve the purification effect of the wastewater. The liquid treated by the exchange membrane 158 enters the filtration purification and discharge tank 16 through the pumping guide tube 153. During this process, the liquid pumping detection tube 155 will guide part of the liquid to the detector 154 for detection to monitor the quality of the treated wastewater. If the test result shows that the wastewater still does not meet the discharge standard, part of the wastewater can be returned to the purification chamber 150 through the circulation pipe 159 for further treatment to ensure that the final effluent water quality meets the standard. If it meets the discharge standard, it can be discharged through the filtration purification and discharge tank 16 or enter the next treatment link. At the same time, the waste gas generated during the treatment process can be discharged from the exhaust end 151, and the waste is discharged from the waste end 152 for corresponding subsequent treatment.

[0042] The wiring diagram of the electric field control generator 7, plasma control generator 10, magnetic field particle console 1190 and sensor group in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the electric field control generator 7, plasma control generator 10, magnetic field particle console 1190 and sensor group will not be explained in detail.

[0043] The method of using and working principle of the device are as follows: first, the wastewater feed pump 1 is started to transport the PCB production wastewater to the nano-composite filter chamber 3 through the delivery pipe 2, so that the nano-composite filter material in the nano-composite filter chamber 3 uses its special nano-structure and surface properties to preliminarily filter and adsorb larger suspended particles, some colloidal substances, and some easily adsorbed heavy metal ions and organic pollutants in the wastewater. For example, the filter material composited with nano-activated carbon and nano-metal oxide can remove some pollutants in the wastewater through physical adsorption and chemical adsorption. The wastewater after preliminary filtration enters the subsequent treatment unit through the connecting guide pipe 4. In this process, the electric field control generator 7 is connected to the electrode group in the connecting guide pipe 4 to generate an electric field. The electric field of a certain strength affects the movement of charged particles in the wastewater, further assisting in the removal of some charged pollutants, such as some heavy metal ions that migrate to the electrode surface and are adsorbed under the action of the electric field. When the wastewater flows into the filter tank 8 through the discharge pipe 6, the drive motor 18 is started, driving the rotating gear 19 to rotate. Since the rotating gear 19 is engaged with the sliding rack 20, the displacement frame 9 slides along the inner wall of the top of the filter tank 8, and the plasma control generator 10 on the displacement frame 9 moves accordingly. The plasma generation and regulation end 22 at the bottom thereof can perform plasma treatment on the wastewater in the filter tank 8 at different positions, and the ultrafiltration membrane 17 performs ultrafiltration on the wastewater after plasma treatment. The filtered water enters the subsequent treatment unit through the discharge valve pipe 111, and the retained substances The wastewater is left in the filter tank 8 for subsequent cleaning, and the guide box 13 transports the required treatment materials, such as flocculants, neutralizers, etc., to the metering pump 1194 through the metering control pipe. At the same time, the side branch guide pipe 21 can also be used to supplement or adjust the material transportation path. Then, when the wastewater enters the treatment chamber 110, according to the treatment requirements and the nature of the wastewater, the classified and appropriate guide pump 112 distributes the wastewater to different unit filter chambers 1195 through the discharge valve pipe 111. For example, when it is detected that the concentration of a certain specific pollutant in the wastewater is high, the water supply to the unit filter chamber with a better treatment effect for the pollutant can be increased. In the unit filter chamber 1195, the ion exchange membrane exchanges specific ions in the wastewater according to its selective permeability characteristics. The cation exchange membrane removes heavy metal cations in the wastewater, such as copper ions, nickel ions, etc., and exchanges them for hydrogen ions. At the same time, the vortex flow generated by the vortex generator can enhance the contact and mixing between the wastewater and the filter medium, thereby improving the treatment efficiency. Then, the metering pump 1194 accurately adds chemical agents, such as flocculants, reducing agents, etc., according to the real-time monitoring data during the treatment process, to further promote the precipitation and removal of pollutants. Part of the wastewater treated by the unit filter chamber 1195 enters the guide groove 116 through the electric valve 115. If the wastewater still does not meet the discharge standard, it can be pumped back to the pumping pipe 119 through the pumping pipe 114 and the pumping pump 118, and transported to the magnetic field particle console 1190 through the valve pipe 12.The magnetic field particle control console 1190 delivers an appropriate amount of magnetic particles into the wastewater according to the properties and treatment requirements. The magnetic particles interact with the pollutants in the wastewater to adsorb or aggregate certain organic pollutants or heavy metal ions to form larger particles. Then, the treated liquid is transported to the discharge guide groove 1191 through the discharge pipe 1193, and the aggregated heavy metal ion clusters formed are connected to the external treatment chamber through the magnetic particle discharge circulation pipe, and then processed, and the magnetic particles are returned to the magnetic field particle control console 1190. Then, the wastewater enters the forward osmosis membrane filtration chamber 1192. Under the action of the forward osmosis membrane, water molecules pass through the membrane driven by osmotic pressure, while salt and other pollutants are retained, thereby achieving further The treated wastewater is discharged through the discharge pipe 6, and the waste generated during the treatment process is discharged through the waste discharge valve pipe 117 for subsequent treatment. In the above-mentioned wastewater treatment process, the water quality parameters of the wastewater are monitored in real time by the sensor group (pH sensor, heavy metal ion sensor and conductivity sensor) installed at various locations. When the sensor group detects that the concentration of a certain pollutant in the wastewater increases or exceeds the preset range, the external PLC controller automatically adjusts the treatment process so that the whole forms a coordinated treatment mode. After that, the wastewater enters the purification chamber 150 of the graded filtration and purification component 15 from the secondary delivery flow valve pipe 14, and the wastewater flows through the cation filter frame 156. The filter frame uses its special structure and material to filter the cations. Selective filtration is performed. For example, the cationic filter frame 156 may be a structure containing special ion exchange resins or adsorbent materials, which can preferentially adsorb and remove certain cations in the wastewater, such as heavy metal cations such as copper ions and iron ions, so that the cationic content of the wastewater is initially reduced. Then, the wastewater enters the capacitor deionization structure 157 for treatment. After applying voltage, the high-conductivity electrodes in the capacitor deionization structure 157 will form an electric field in the electrolyte solution guide groove. The ions in the wastewater migrate under the action of the electric field, and the charged ions therein will be adsorbed by the high-conductivity electrodes to achieve ion removal. The function of the current collector is to collect and conduct electrons on the electrodes to ensure the stability and uniformity of the electric field. Through the above, the ions in the wastewater are further removed. , especially some ions that are difficult to remove by chemical precipitation or ion exchange, to improve the purity of the wastewater. The wastewater treated as above continues to flow upward, passes through the exchange membrane 158, and uses the exchange membrane 158 to further separate or exchange specific substances in the wastewater to improve the purification effect of the wastewater. The liquid treated by the exchange membrane 158 enters the filtration purification discharge tank 16 through the pumping guide tube 153. During this process, the liquid pumping detection tube 155 will guide part of the liquid to the detector 154 for detection to monitor the quality of the treated wastewater. If the test result shows that the wastewater still does not meet the discharge standard, part of the wastewater can be returned to the purification chamber 150 through the circulation pipe 159 for re-treatment to ensure that the final effluent water quality meets the standard. If it meets the discharge standard,The waste gas can be discharged from the filter purification discharge tank 16 or enter the next treatment link. At the same time, the waste gas generated during the treatment process can be discharged from the exhaust end 151, and the waste material can be discharged from the waste material end 152 for corresponding subsequent treatment.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined PCB production wastewater pretreatment and filtering device, characterized in that: The invention comprises a wastewater feed pump (1), the side end of the wastewater feed pump (1) is connected to a delivery pipe (2), the side end of the delivery pipe (2) is connected to a nanocomposite filter chamber (3), the side end of the nanocomposite filter chamber (3) is connected to a connecting guide pipe (4), the top end of the connecting guide pipe (4) is provided with an electrode connection and replacement chamber (5), the top end of the electrode connection and replacement chamber (5) is provided with an electric field control generator (7), the electrode group installed inside the connecting guide pipe (4) is connected to the electric field control generator (7) via a conductive joint, the side end of the connecting guide pipe (4) is connected to a discharge pipe (6), and the side end of the connecting guide pipe (4) is provided with a unitized adjustment and control component (11); The unitized regulating and controlling component (11) comprises a processing chamber (110), the top of the interior of the processing chamber (110) is connected to a discharge valve pipe (111), the bottom of the discharge valve pipe (111) is connected to a classified and appropriate amount of guide pump (112), the bottom of the classified and appropriate amount of guide pump (112) is connected to a classified and guide valve pipe (113), a plurality of unit filter chambers (1195) are installed at the bottom of the classified and guide valve pipe (113), a plurality of unit filter chambers (1195) are installed on the inner wall surfaces of the plurality of unit filter chambers (1195), an ion exchange membrane and a vortex generator are installed inside the plurality of unit filter chambers (1195), an electric valve (115) is installed at the bottom of the plurality of unit filter chambers (1195), the bottom of the processing chamber (110) is connected to a guide groove (116), the guide groove ( The bottom of the filter chamber (116) is connected to a waste discharge valve pipe (117), and the sides of multiple groups of unit filter chambers (1195) are equipped with electric-controlled iris valves. The side ends of the unit filter chambers (1195) are connected to a pumping pipe (114), the top of the pumping pipe (114) is connected to a pumping pump (118), the top of the pumping pump (118) is connected to a pumping pipe (119), the top of the pumping pipe (119) is connected to a magnetic field particle control console (1190), the bottom end of the magnetic field particle control console (1190) is symmetrically connected to a discharge pipe (1193), the side end of the magnetic field particle control console (1190) is connected to a magnetic particle discharge circulation pipe, the bottom end of the discharge pipe (1193) is connected to a discharge guide groove (1191), and the side end of the discharge guide groove (1191) is connected to a forward osmosis membrane filter chamber (1192).

2. The combined PCB production wastewater pretreatment and filtering device according to claim 1 is characterized in that: A filter pool (8) is installed on the side of the connecting guide pipe (4), an ultrafiltration membrane (17) is installed inside the filter pool (8), the bottom end of the filter pool (8) is connected to a discharge valve pipe (111), and the side end of the pumping pipe (119) is connected to a valve pipe (12).

3. The combined PCB production wastewater pretreatment and filtering device according to claim 2 is characterized in that: The top end of the filter tank (8) is slidably connected to a displacement frame (9), the side end of the displacement frame (9) is slidably connected to a movable sliding column, and the other side end surface of the displacement frame (9) is fixedly connected to a sliding rack (20).

4. The combined PCB production wastewater pretreatment and filtering device according to claim 2 is characterized in that: The top surface of the filter tank (8) is fixedly connected to a driving motor (18), the bottom output end of the driving motor (18) is connected to a rotating gear (19), the rotating gear (19) is meshingly connected to a sliding rack (20), and the sliding rack (20) is located on the top inner wall of the filter tank (8) and is slidably connected.

5. The combined PCB production wastewater pretreatment and filtering device according to claim 3 is characterized in that: A plasma control generator (10) is symmetrically mounted on the top end of the displacement frame (9), and a plasma generation regulating end (22) is connected to the bottom end of the plasma control generator (10).

6. The combined PCB production wastewater pretreatment and filtering device according to claim 1 is characterized in that: The bottom of the forward osmosis membrane filtration chamber (1192) is connected to a secondary flow valve tube (14), and the side end of the secondary flow valve tube (14) is connected to a graded filtration purification component (15). The side of the treatment chamber (110) is connected to a feed guide box (13) through a metering control tube, and the side end of the feed guide box (13) is connected to a side branch feed guide tube (21).

7. The combined PCB production wastewater pretreatment and filtering device according to claim 6 is characterized in that: The graded filtration purification component (15) comprises a purification chamber (150), a cation filter frame (156) is installed at the bottom of the purification chamber (150), and a capacitive deionization structure (157) is installed inside the purification chamber (150), and the capacitive deionization structure (157) is composed of a high-conductivity electrode, a current collector and an electrolyte solution guide groove.

8. The combined PCB production wastewater pretreatment and filtering device according to claim 7 is characterized in that: The side end surfaces of the purification chamber (150) are respectively provided with an exhaust end (151) and a waste end (152); an exchange membrane (158) is installed at the inner middle end of the purification chamber (150); and a pumping guide tube (153) is installed at the top end of the exchange membrane (158).

9. The combined PCB production wastewater pretreatment and filtering device according to claim 8 is characterized in that: A filtering and purifying discharge pool (16) is installed at the bottom of the side end of the pumping and conveying pipe (153), and a liquid extraction detection pipe (155) is connected to the side of the pumping and conveying pipe (153), and a detector (154) is connected to the side end of the liquid extraction detection pipe (155).

10. The combined PCB production wastewater pretreatment and filtering device according to claim 9 is characterized in that: The bottom end of the detector (154) is connected to the side end of the bottom control valve of the pumping guide tube (153), and the other side end of the bottom control valve of the pumping guide tube (153) is provided with a circulation tube (159).

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