Advanced treatment device and method for recycling electronic electroplating wastewater

Abstract

The invention discloses an electronic electroplating wastewater reuse advanced treatment device and method, the device comprises a base, when a lifting rod drives a sealing piston to move downwards, a piston ring is not blocked any more, wastewater drives sediment to flow through the piston ring and be discharged through an impurity discharge pipe, and meanwhile, a flow guide hopper is blocked through a baffle fixed on the lifting rod; backflushing and cleaning the conical net by utilizing water pressure at the tops of the first treatment tower and the second treatment tower, and discharging through an impurity discharging pipe; the method comprises the following steps: S1, adding a chemical agent; S2, treating wastewater; S3, cleaning precipitates; and S4, cleaning a conical net and discharging the precipitates. The defect of tank-by-tank treatment in the prior art is overcome, efficient mixed reaction of wastewater and chemical agents is achieved through continuous wastewater conveying, rotary spraying of the chemical agents and stirring and mixing of the spiral stirring blades, the treatment efficiency is improved, and the actual requirement for continuous wastewater treatment in the factory production process can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic electroplating wastewater treatment, and in particular to a device and method for deep treatment of electronic electroplating wastewater reuse. Background Art

[0002] The sources of electroplating wastewater are generally plated parts cleaning water, waste plating solution and other wastewater. The water quality of electroplating wastewater is complex and its composition is difficult to control. Electroplating wastewater contains heavy metal ions and cyanide such as chromium, cadmium, nickel, copper, zinc, gold, silver, etc.; At present, chemical precipitation is mostly used for deep treatment of electroplating wastewater. Specific chemical precipitation methods include neutralization precipitation (adding alkali for neutralization reaction to generate hydroxide precipitate), sulfide precipitation (adding sulfide to generate sulfide precipitate) and chelate precipitation (using high molecular weight heavy metal capture precipitant to generate water-insoluble chelate salt), so as to complete the deep treatment of electroplating wastewater.

[0003] In the prior art, a device and method for deep treatment of electronic electroplating wastewater reuse is disclosed in publication number CN119370929A. Its operating process is to transport the wastewater into a treatment tank one by one for purification treatment, discharge it after treatment, and then turn to treat the next tank of wastewater. However, in the actual electronic electroplating production process, wastewater is generated continuously. Therefore, this tank-by-tank treatment method is obviously difficult to meet the actual needs of continuous wastewater treatment in the factory production process. To this end, the present application proposes a device and method for deep treatment of electronic electroplating wastewater reuse. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and to propose a device and method for deep treatment of electronic electroplating wastewater reuse.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A device for deep treatment of electronic electroplating wastewater reuse, comprising a base, on which are mounted a first treatment tower and a second treatment tower capable of continuously conveying wastewater, a drainage pipe being mounted on the upper ends of the first treatment tower and the second treatment tower, a sleeve being provided at the bottom of the first treatment tower and the second treatment tower, a plurality of spiral stirring blades being fixed on the outside of the sleeve, and a lifting rod being movably connected thereto; a piston cylinder being fixed at the bottom of the drainage pipe, a piston ring being fixed in the piston cylinder, a sealing piston being slidably connected to the lifting rod in the piston ring, and a sleeve being provided at the bottom of the piston cylinder, The drain hole is located below the piston ring, and a conical net is fixed on the outside of the piston cylinder. A guide bucket is fixed on the conical net and is fixed to the inner wall of the first treatment tower and the second treatment tower. The treated wastewater is filtered when passing through the conical net and the sediment accumulates in the piston cylinder and between the piston cylinder and the conical net. When the lifting rod drives the sealing piston to move downward, the piston ring is no longer blocked, and the wastewater drives the sediment to flow through the piston ring and be discharged through the drainage pipe. At the same time, the guide bucket is blocked by the baffle fixed on the lifting rod, and the water pressure at the top of the first treatment tower and the second treatment tower is used to backwash and clean the conical net and discharge it through the drainage pipe.

[0006] Preferably, a wastewater pool, a sedimentation tank and a bracket are also installed on the base, the first treatment tower and the second treatment tower are installed on the bracket, and the wastewater pool, the first treatment tower, the second treatment tower and the sedimentation tank are connected in sequence.

[0007] Preferably, a first pipe is installed on the wastewater pool, the first pipe is connected to the lower end of the first treatment tower, a second pipe is installed on the upper end of the first treatment tower, the second pipe is connected to the lower end of the second treatment tower, and the upper end of the second treatment tower is connected to the sedimentation tank through a third pipe.

[0008] Preferably, it also includes a driving mechanism for driving the two sleeves to rotate, the driving mechanism includes a motor installed at the bottom of the first processing tower, the output end of the motor is fixed with a driving shaft, the two sleeves are each installed with a first synchronous wheel, the two first synchronous wheels are connected by a first synchronous belt, the driving shaft and the sleeve are each installed with a second synchronous wheel, the two second synchronous wheels are connected by a second synchronous belt.

[0009] Preferably, it also includes a resisting mechanism for driving the lifting rod to lift, and the resisting mechanism includes a reduction gear box installed on the base, the driving shaft is fixedly connected to one shaft end of the reduction gear box, and the other shaft end of the reduction gear box is fixed with a transmission shaft, and two cams are fixed on the transmission shaft, and the bottom of the lifting rod is connected to a conveying pipe movably arranged with a sleeve, and a driving plate cooperating with the cam is fixed on the conveying pipe, and a rotating ring arranged for rotation is sleeved on the sleeve, and a spring is fixed on the rotating ring and the driving plate.

[0010] Preferably, a support rod is fixed on the base, and the transmission shaft passes through the support rod and is rotatably connected thereto.

[0011] Preferably, it also includes a chemical supply mechanism, which includes a connecting block fixed to the inner wall of the delivery pipe, a thin rod fixed to the upper end of the connecting block, and the upper end of the thin rod is fixedly connected to the bottom of the lifting rod. An annular cavity is formed between the thin rod, the sleeve, the delivery pipe and the lifting rod, and a plurality of spray holes connected to the annular cavity are provided on the sleeve.

[0012] The present invention also discloses a method for deep treatment of electronic electroplating wastewater, comprising the following steps: S1, chemical agent addition: start the motor, and the sleeve and spiral stirring blade rotate through the transmission; the sodium hydroxide solution or other alkaline solution is transported to the first treatment tower through the delivery pipe, and the high molecular weight heavy metal capture precipitant is transported to the delivery pipe of the second treatment tower.

[0013] S2, wastewater treatment: Chemical agents are transported into the annular cavity through a delivery pipe, and are sprayed out in a rotational manner through the nozzle holes on the sleeve. They are mixed and reacted with the wastewater under the stirring of the spiral stirring blades to generate hydroxide precipitates and chelated salts that are insoluble in the wastewater.

[0014] S3, sediment cleaning: wastewater and water-insoluble sediment flow upward, guided by the diversion bucket, and then flow toward the conical net. The sediment accumulates in the piston cylinder and between the piston cylinder and the conical net, thus filtering the sediment.

[0015] S4, cleaning of the conical net and discharge of sediment: the rotation of the drive shaft drives the reduction gearbox, thereby realizing the slow rotation of the transmission shaft. The cam on the transmission shaft drives the drive plate to move upward, driving the conveying pipe, thin rod and lifting rod to move upward. The upward movement of the lifting rod drives the baffle to move upward, reducing the distance between the guide buckets, increasing the flow rate of wastewater, and flushing and cleaning the surface of the conical net; the upward movement of the lifting rod also drives the sealing piston to move upward and separate from the piston ring. The first treatment tower is connected to the drainage pipe. The wastewater drives the piston cylinder and the accumulated sediment to flow through the discharge hole and the piston ring to the drainage pipe for discharge.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Since the spray hole is located below the spiral stirring blade, the sprayed chemical reagent is stirred by the spiral stirring blade and mixed with the wastewater flowing upward from the lower end to produce hydroxide precipitates and chelated salts that are insoluble in the wastewater.

[0017] 2. Wastewater and water-insoluble sediment flow upward, and are guided by the diversion bucket to flow toward the conical net. The sediment accumulates in the piston cylinder and between the piston cylinder and the conical net, thereby filtering the sediment. The filtered wastewater flows into the second treatment tower, so the sediment in the first treatment tower will not affect the chelating agent in the second treatment tower.

[0018] 3. The upward movement of the lifting rod drives the baffle to move upward. The baffle moves upward slowly to reduce the distance between the diversion buckets. In this way, the cross-section of the wastewater flow is reduced, which increases the flow speed of the wastewater. Therefore, the speed of the wastewater flowing close to the diversion bucket is increased, thereby flushing the surface of the conical net and cleaning the conical net.

[0019] 4. The lifting rod moves upward, driving the sealing piston to move upward and separate from the piston ring. At this time, the first treatment tower is connected to the drainage pipe. Due to the high pressure effect of the first treatment tower, the wastewater drives the piston cylinder and the accumulated sediment to flow through the discharge hole and the piston ring into the drainage pipe, and finally discharged through the drainage pipe, thus realizing the treatment of the sediment.

[0020] 5. The baffle and the diversion bucket are offset from each other. Since the first treatment tower is in a high-pressure state, the wastewater under the baffle cannot flow upward. The water on the upper side flows in the reverse direction through the conical net due to pressure, realizing reverse flushing of the conical net.

[0021] 6. Through the continuous delivery of wastewater, rotary spraying of chemical agents and stirring and mixing by spiral stirring blades, efficient mixing reaction of wastewater and chemical agents is achieved, thereby improving treatment efficiency.

[0022] In summary, the present invention avoids the drawbacks of the prior art of tank-by-tank treatment. By continuously conveying wastewater, rotating spraying of chemicals and stirring and mixing with spiral stirring blades, an efficient mixing reaction of wastewater and chemicals is achieved, thereby improving the treatment efficiency and meeting the actual needs of continuous wastewater treatment in factory production processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 2 This is a side view of an electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 3 This is a rear view of an electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 4 This is a structural diagram of the motor in a device for deep treatment of electronic electroplating wastewater reuse proposed by the present invention; Figure 5 This is a partial cross-sectional view of an electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 6 This is a schematic diagram of the structure of the spiral blades in the electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 7 This is a schematic diagram of the structure of the thin rod in the electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 8 This is a structural schematic diagram of a diversion hopper in an electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 9 This is a cross-sectional view of the diversion hopper in the electronic electroplating wastewater reuse and deep treatment device proposed by the present invention; Figure 10 This is a structural schematic diagram of the enlarged thin rod of an electronic electroplating wastewater reuse deep treatment device proposed by the present invention.

[0024] In the figure: 1 base, 2 wastewater tank, 3 sedimentation tank, 4 bracket, 5 first treatment tower, 6 second treatment tower, 7 miscellaneous pipe, 8 first pipeline, 9 second pipeline, 10 third pipeline, 11 support rod, 12 motor, 13 reduction box, 14 drive shaft, 15 sleeve, 16 first synchronous belt, 17 first synchronous wheel, 18 spray hole, 19 transmission shaft, 20 delivery pipe, 21 second synchronous belt, 22 second synchronous wheel, 23 rotating ring, 24 spring, 25 drive plate, 26 cam, 27 spiral stirring blade, 28 guide bucket, 29 piston cylinder, 30 conical net, 31 lifting rod, 32 thin rod, 33 discharge hole, 34 piston ring, 35 sealing piston, 36 baffle, 37 connecting block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figures 1-10 A device for deep treatment of electronic electroplating wastewater reuse includes a base 1, on which are installed a first treatment tower 5 and a second treatment tower 6 capable of continuously transporting wastewater. A wastewater tank 2, a sedimentation tank 3 and a bracket 4 are also installed on the base 1. The first treatment tower 5 and the second treatment tower 6 are installed on the bracket 4. The wastewater tank 2, the first treatment tower 5, the second treatment tower 6 and the sedimentation tank 3 are connected in sequence. A first pipe 8 is installed on the wastewater tank 2. A high-pressure pump is installed on the wastewater tank 2, which can transport wastewater to the first treatment tower 5 through the first pipe 8; the first pipe 8 is connected to the lower end of the first treatment tower 5, and a second pipe 9 is installed on the upper end of the first treatment tower 5. The second pipe 9 is connected to the lower end of the second treatment tower 6, and the upper end of the second treatment tower 6 is connected to the sedimentation tank 3 through a third pipe 10.

[0027] The upper ends of the first treatment tower 5 and the second treatment tower 6 are both equipped with a drainage pipe 7. The bottoms of the first treatment tower 5 and the second treatment tower 6 are penetrated by a sleeve 15 rotatably connected thereto. A plurality of spiral stirring blades 27 are fixed to the outside of the sleeve 15, and a lifting rod 31 is movably connected to the inside. The lifting rod 31 and the sleeve 15 can rotate and move up and down.

[0028] It also includes a driving mechanism for driving the two sleeves 15 to rotate, and the driving mechanism includes a motor 12 installed at the bottom of the first processing tower 5. The output end of the motor 12 is fixed with a driving shaft 14. The two sleeves 15 are each installed with a first synchronous wheel 17. The two first synchronous wheels 17 are connected by a first synchronous belt 16. The driving shaft 14 and the sleeve 15 are each installed with a second synchronous wheel 22. The two second synchronous wheels 22 are connected by a second synchronous belt 21.

[0029] It also includes a supporting mechanism for driving the lifting rod 31 to rise and fall, and the supporting mechanism includes a reduction gear 13 installed on the base 1, a drive shaft 14 is fixedly connected to one axial end of the reduction gear 13, and a transmission shaft 19 is fixed to the other axial end of the reduction gear 13. A support rod 11 is fixed on the base 1, and the transmission shaft 19 passes through the support rod 11 and is rotatably connected thereto, so that the transmission shaft 19 can be supported to ensure its stable rotation; two cams 26 are fixed on the transmission shaft 19, and the bottom of the lifting rod 31 is connected to a delivery pipe 20 movably arranged with the sleeve 15, and a drive plate 25 cooperating with the cam 26 is fixed on the delivery pipe 20, and a rotating ring 23 rotatably arranged is provided on the sleeve 15, and a spring 24 is fixed on the rotating ring 23 and the drive plate 25.

[0030] A connected piston cylinder 29 is fixed to the bottom of the drainage pipe 7, and a piston ring 34 is fixed in the piston cylinder 29. A sealing piston 35 fixedly connected to the lifting rod 31 is slidably connected in the piston ring 34. A discharge hole 33 is provided on the piston cylinder 29 below the piston ring 34. A conical net 30 is fixed to the outside of the piston cylinder 29, and a guide bucket 28 fixed to the inner wall of the first treatment tower 5 and the second treatment tower 6 is fixed on the conical net 30. When the treated wastewater passes through the conical net 30, it is filtered and the sediment accumulates in the piston cylinder 29 and between the piston cylinder 29 and the conical net 30. When the lifting rod 31 drives the sealing piston 35 to move downward, the piston ring 34 is no longer blocked, and the wastewater drives the sediment to flow through the piston ring 34 and be discharged through the drainage pipe 7. At the same time, the guide bucket 28 is blocked by the baffle 36 fixed on the lifting rod 31, and the water pressure at the top of the first treatment tower 5 and the second treatment tower 6 is used to backwash and clean the conical net 30 and discharge it through the drainage pipe 7.

[0031] It also includes a chemical agent supply mechanism, which includes a connecting block 37 fixed to the inner wall of the delivery pipe 20, a thin rod 32 fixed to the upper end of the connecting block 37, and the upper end of the thin rod 32 is fixedly connected to the bottom of the lifting rod 31. An annular cavity is formed between the thin rod 32, the sleeve 15, the delivery pipe 20 and the lifting rod 31, and the sleeve 15 is penetrated by a plurality of spray holes 18 connected to the annular cavity; a pump body can be installed on the base 1, and the output end of the pump body is connected to the delivery pipe 20 through a hose, and the pump body transports sodium hydroxide solution or other alkaline solution into the first treatment tower 5, and adds alkali for neutralization reaction to generate hydroxide precipitate; the pump body transports a high molecular weight heavy metal capture precipitant into the second treatment tower 6, and uses the high molecular weight heavy metal capture precipitant to generate water-insoluble chelated salt, thereby completing the deep treatment of electroplating wastewater.

[0032] When the present invention is used, the high-pressure pump transports the wastewater to the first treatment tower 5 through the first pipe 8. The wastewater fills the first treatment tower 5 and flows through the second pipe 9 to the second treatment tower 6. The second treatment tower 6 is filled with wastewater and flows through the third pipe 10 to the sedimentation tank 3. Due to the transportation of the high-pressure pump, the interior of the first treatment tower 5 and the second treatment tower 6 is in an overpressure state, so that the electroplating wastewater can be continuously transported.

[0033] At this time, the motor 12 is started and the chemical agent and the chelating agent (hereinafter referred to as the chemical agent) are respectively delivered to the two delivery pipes 20 through the pump body so as to mix and react with the wastewater, as follows: The motor 12 drives the drive shaft 14 to rotate, and the sleeve 15 rotates through the cooperation of the second synchronous wheel 22 and the second synchronous belt 21. The two sleeves 15 rotate synchronously with the cooperation of the first synchronous wheel 17 and the first synchronous belt 16. The pump body can deliver chemical reagents to the delivery pipe 20. The chemical reagents are delivered to the annular cavity through the delivery pipe 20 and finally sprayed out through the spray hole 18. Since the sleeve 15 rotates, the chemical reagents sprayed through the spray hole 18 will be sprayed out in a rotational manner and sprayed into the first treatment tower 5 and the second treatment tower 6. Since the spray hole 18 is located below the spiral stirring blade 27, the sprayed chemical reagents are stirred by the spiral stirring blade 27 and stirred and mixed with the wastewater flowing upward through the lower end, so that hydroxide precipitates and chelated salts insoluble in the wastewater are produced.

[0034] The wastewater and water-insoluble sediment flow upward, and are guided by the guide bucket 28 to flow toward the conical net 30. The sediment accumulates in the piston cylinder 29 and between the piston cylinder 29 and the conical net 30, thereby filtering the sediment. The filtered wastewater flows into the second treatment tower 6, so the sediment in the first treatment tower 5 will not affect the chelating agent and the like in the second treatment tower 6.

[0035] The rotation of the drive shaft 14 drives the reduction gear box 13 to rotate, and the transmission shaft 19 is realized by the transmission of the reduction gear box 13, and the rotation is slow. The rotation of the drive shaft 19 drives the cam 26 to rotate. When the cam 26 drives the driving plate 25 to move upward, it will drive the conveying pipe 20, the thin rod 32 and the lifting rod 31 to move upward. The upward movement of the lifting rod 31 drives the baffle 36 to move upward. The baffle 36 slowly moves upward to reduce the distance between the guide buckets 28. In this way, the cross-section of the wastewater flow is reduced, so that the flow speed of the wastewater is increased. Therefore, the speed of the wastewater flowing close to the guide bucket 28 increases, so that the surface of the conical net 30 can be flushed, and the conical net 30 can be cleaned.

[0036] The lifting rod 31 moves upward, driving the sealing piston 35 to move upward and separate from the piston ring 34. At this time, the first treatment tower 5 is connected to the drainage pipe 7. Due to the high pressure effect of the first treatment tower 5, the wastewater drives the piston cylinder 29 and the accumulated sediment to flow through the discharge hole 33 and the piston ring 34 to the drainage pipe 7, and finally discharged through the drainage pipe 7, thereby realizing the treatment of the sediment.

[0037] Then, the baffle 36 is against the guide bucket 28. Since the first treatment tower 5 is in a high-pressure state, the wastewater on the lower side of the baffle 36 cannot flow upward. The water on the upper side flows in the opposite direction through the conical net 30 due to the pressure, and is finally discharged through the drainage pipe 7. In this way, the conical net 30 is reversely flushed to prevent it from being blocked and affecting water flow. This part utilizes the characteristics of the water pressure in the first treatment tower 5 to achieve backwashing.

[0038] When the cam 26 continues to rotate, the driving plate 25, the lifting rod 31, etc. move downward under the action of the spring 24, and then the sealing piston 35 moves downward. Finally, the sealing piston 35 is located in the piston ring 34, sealing it, and the baffle 36 moves downward; the conical net 30 continues to filter the sediment.

[0039] The driving piece 25 may be a short rod, and the cam 26 may have a cam-shaped groove, in which the short rod slides. This can more stably drive the conveying pipe 20 and the lifting rod 31 to move stably.

[0040] The precipitate treatment process in the second treatment tower 6 is the same as above.

[0041] In this way, the sediment in the first treatment tower 5 and the second treatment tower 6 can be filtered and treated without affecting the subsequent deep treatment of the electroplating wastewater.

[0042] When the cam 26 drives the driving plate 25 to move upward again, it is the next cycle of cleaning the conical net 30.

[0043] The present invention also discloses a method for deep treatment of electronic electroplating wastewater, comprising the following steps: S1, chemical agent addition: start the motor 12, and the sleeve 15 and the spiral stirring blade 27 rotate accordingly through the transmission; the sodium hydroxide solution or other alkaline solution is transported to the first treatment tower 5 through the delivery pipe 20, and the high molecular weight heavy metal capture precipitant is transported to the delivery pipe 20 of the second treatment tower 6.

[0044] S2, wastewater treatment: Chemical agents are delivered to the annular cavity through the delivery pipe 20, and are sprayed out in a rotational manner through the nozzle holes 18 on the sleeve 15. They are mixed and reacted with the wastewater under the stirring of the spiral stirring blades 27 to generate hydroxide precipitates and chelated salts that are insoluble in the wastewater.

[0045] S3, sediment cleaning: wastewater and water-insoluble sediment flow upward, guided by the guide bucket 28, and flow toward the conical net 30. The sediment accumulates in the piston cylinder 29 and between the piston cylinder 29 and the conical net 30, thereby filtering the sediment.

[0046] S4, cleaning of the conical net and discharge of sediment: the drive shaft 14 rotates to drive the reduction gearbox 13, thereby realizing slow rotation of the transmission shaft 19. The cam 26 on the transmission shaft 19 drives the drive plate 25 to move upward, driving the conveying pipe 20, the thin rod 32 and the lifting rod 31 to move upward. The upward movement of the lifting rod 31 drives the baffle 36 to move upward, reducing the distance between the guide buckets 28, increasing the flow rate of the wastewater, and flushing and cleaning the surface of the conical net 30; the upward movement of the lifting rod 31 also drives the sealing piston 35 to move upward, separating from the piston ring 34, and the first treatment tower 5 is connected to the drainage pipe 7. The wastewater drives the piston cylinder 29 and the accumulated sediment to flow through the discharge hole 33 and the piston ring 34 to the drainage pipe 7 for discharge.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An electronic electroplating wastewater reuse deep treatment device, comprising a base (1), characterized in that: The base (1) is provided with a first treatment tower (5) and a second treatment tower (6) capable of continuously conveying wastewater. The upper ends of the first treatment tower (5) and the second treatment tower (6) are both provided with a drainage pipe (7). The bottoms of the first treatment tower (5) and the second treatment tower (6) are penetrated by a sleeve (15) rotatably connected thereto. The sleeve (15) is externally fixed with a plurality of spiral stirring blades (27) and internally movably connected with a lifting rod (31). The bottom of the drainage pipe (7) is fixed with a connected piston cylinder (29), the piston cylinder (29) is internally fixed with a piston ring (34), the piston ring (34) is slidably connected with a sealing piston (35) fixedly connected to the lifting rod (31), the piston cylinder (29) is penetrated by a drainage hole (33) located below the piston ring (34). A conical net (30) is fixed to the outside of the piston cylinder (29), and a guide hopper (28) fixed to the inner wall of the first treatment tower (5) and the second treatment tower (6) is fixed on the conical net (30). When the treated wastewater passes through the conical net (30), it is filtered and the sediment accumulates in the piston cylinder (29) and between the piston cylinder (29) and the conical net (30). When the lifting rod (31) drives the sealing piston (35) to move downward, the piston ring (34) is no longer blocked, and the wastewater drives the sediment to flow through the piston ring (34) and be discharged through the drainage pipe (7). At the same time, the guide hopper (28) is blocked by the baffle (36) fixed on the lifting rod (31), and the water pressure at the top of the first treatment tower (5) and the second treatment tower (6) is used to backwash and clean the conical net (30) and discharge it through the drainage pipe (7).

2. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 1, characterized in that: A wastewater pool (2), a sedimentation pool (3) and a bracket (4) are also installed on the base (1); the first treatment tower (5) and the second treatment tower (6) are installed on the bracket (4); and the wastewater pool (2), the first treatment tower (5), the second treatment tower (6) and the sedimentation pool (3) are connected in sequence.

3. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 2, characterized in that: A first pipe (8) is installed on the wastewater pool (2), and the first pipe (8) is connected to the lower end of the first treatment tower (5). A second pipe (9) is installed on the upper end of the first treatment tower (5), and the second pipe (9) is connected to the lower end of the second treatment tower (6). The upper end of the second treatment tower (6) is connected to the sedimentation tank (3) through a third pipe (10).

4. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 1, characterized in that: The invention also includes a driving mechanism for driving the two sleeves (15) to rotate, wherein the driving mechanism includes a motor (12) installed at the bottom of the first processing tower (5), a driving shaft (14) is fixed to the output end of the motor (12), a first synchronous wheel (17) is installed on each of the two sleeves (15), and the two first synchronous wheels (17) are connected by a first synchronous belt (16), and a second synchronous wheel (22) is installed on each of the driving shaft (14) and the sleeve (15), and the two second synchronous wheels (22) are connected by a second synchronous belt (21).

5. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 4, characterized in that: The invention also includes a moving mechanism for driving the lifting rod (31) to move up and down, wherein the moving mechanism includes a reduction box (13) installed on the base (1), the driving shaft (14) is fixedly connected to one axial end of the reduction box (13), the other axial end of the reduction box (13) is fixed with a transmission shaft (19), two cams (26) are fixed on the transmission shaft (19), the bottom of the lifting rod (31) is connected to a delivery pipe (20) movably arranged with the sleeve (15), a driving plate (25) cooperating with the cam (26) is fixed on the delivery pipe (20), a rotating ring (23) is sleeved on the sleeve (15), and a spring (24) is fixed on the rotating ring (23) and the driving plate (25).

6. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 5, characterized in that: A support rod (11) is fixed on the base (1), and the transmission shaft (19) passes through the support rod (11) and is rotatably connected thereto.

7. The device for recycling and deep treatment of electronic electroplating wastewater according to claim 5, characterized in that: The invention also includes a chemical agent supply mechanism, which includes a connecting block (37) fixed to the inner wall of the delivery pipe (20), a thin rod (32) fixed to the upper end of the connecting block (37), the upper end of the thin rod (32) is fixedly connected to the bottom of the lifting rod (31), and an annular cavity is formed among the thin rod (32), the sleeve (15), the delivery pipe (20) and the lifting rod (31), and a plurality of spray holes (18) connected to the annular cavity are penetrated on the sleeve (15).

8. A method for advanced treatment of electronic electroplating wastewater reuse, which is applied to the treatment device according to any one of claims 1 to 7 to treat wastewater, characterized in that: The following steps are involved: S1, chemical agent addition: start the motor (12), and the sleeve (15) and the spiral stirring blade (27) rotate accordingly through the transmission; the sodium hydroxide solution or other alkaline solution is transported to the first treatment tower (5) through the delivery pipe (20), and the high molecular weight heavy metal capture precipitant is transported to the delivery pipe (20) of the second treatment tower (6); S2, wastewater treatment: Chemical agents are transported into the annular cavity through the delivery pipe (20), and are sprayed out in a rotary manner through the nozzle holes (18) on the sleeve (15), where they react with the wastewater under the stirring of the spiral stirring blades (27), thereby generating hydroxide precipitates and chelated salts that are insoluble in the wastewater; S3, sediment cleaning: wastewater and water-insoluble sediment flow upward, and after being guided by the guide bucket (28), the wastewater and sediment flow toward the conical net (30), and the sediment accumulates in the piston cylinder (29) and between the piston cylinder (29) and the conical net (30), thereby filtering the sediment; S4, cleaning of the conical net (30) and discharge of sediment: the driving shaft (14) rotates to drive the reduction box (13), thereby realizing the slow rotation of the transmission shaft (19), and the cam (26) on the transmission shaft (19) drives the driving plate (25) to move upward, driving the conveying pipe (20), the thin rod (32) and the lifting rod (31) to move upward, and the lifting rod (31) moves upward to drive the baffle (36) to move upward, thereby reducing the distance between the guide buckets (28), increasing the flow rate of the wastewater, and flushing and cleaning the surface of the conical net (30); the lifting rod (31) moves upward and also drives the sealing piston (35) to move upward, separating from the piston ring (34), and the first treatment tower (5) is connected to the drainage pipe (7). The wastewater drives the piston cylinder (29) and the accumulated sediment to flow through the discharge hole (33) and the piston ring (34) to the drainage pipe (7) for discharge.

Images