A wastewater treatment system for electroplating production process

Abstract

The present invention discloses a wastewater treatment system for electroplating production process, and relates to the technical field of wastewater treatment. In the present invention, an internal liquid separation component is rotatably arranged inside the primary treatment box and the secondary treatment box, and two external liquid separation components are symmetrically installed outside the primary treatment box. The external liquid separation components are respectively connected with the two internal liquid separation components and the medicine dispensing box, and the rotating medicine dispensing component is rotatably connected with the corresponding internal liquid separation component. The medicine dispensing box is provided with an inner gear ring coaxial with the medicine dispensing box, and the inner gear ring is meshed with each rotating medicine dispensing component inside the medicine dispensing box. The mixed flow component is rotatably connected with the corresponding internal liquid separation component, and the mixed flow component is fixedly connected with the corresponding rotating medicine dispensing component above it. In the process of the porous medicine dispensing cylinder revolving and rotating at the same time, the granular flocculation treatment agent inside the present invention can be gradually dissolved and centrifugally thrown out, thereby achieving sufficient mixing of the flocculation treatment agent in the medicine dispensing box, and accelerating the dispersion effect of the flocculation treatment agent in the medicine dispensing box.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a wastewater treatment system for an electroplating production process. Background Art

[0002] The electroplating process is a method of covering a conductor with a layer of metal using the principle of electrolysis. It refers to a surface processing method in which the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal through electrolysis in a salt solution containing the pre-plated metal, with the base metal to be plated as the cathode, thereby forming a coating.

[0003] A large amount of electroplating wastewater is generated during the electroplating process. The water quality of electroplating wastewater is complex and its composition is difficult to control. Electroplating wastewater contains heavy metal ions such as chromium, cadmium, nickel, copper, zinc, gold, silver, and cyanide. In order to prevent the pollution of the environment caused by electroplating wastewater, the electroplating wastewater needs to be effectively treated before discharge to meet the discharge standards.

[0004] In the prior art, flocculation sedimentation is an effective treatment method for electroplating wastewater, which can effectively remove heavy metals in electroplating wastewater. The existing flocculation treatment method generally transports the electroplating wastewater to a reaction tank, then sprinkles solid flocculating agents into the reaction tank, and then stirs the reaction through the stirring blades in the reaction tank. However, this stirring blade stirring method has many dead corners, and the method of directly sprinkling solid flocculating agents easily causes the flocculating agents to not be fully mixed by the stirring blades, thereby reducing the flocculation reaction effect of the electroplating wastewater. To this end, we provide a wastewater treatment system for electroplating production processes to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a wastewater treatment system for electroplating production process, which solves the problems in the above-mentioned background technology through the specific structural design of the primary treatment box, the secondary treatment box, the dispensing box, the liquid separation mechanism, the rotating dispensing mechanism and the mixing flow component.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a wastewater treatment system for electroplating production process, comprising a primary treatment box, a secondary treatment box is fixedly installed at the bottom of the primary treatment box, a set of filter press equipment is arranged on one side of the secondary treatment box, and a medicine dispensing box is fixedly installed on the top of the primary treatment box; a liquid separation mechanism, the liquid separation mechanism is installed between the primary treatment box, the secondary treatment box and the medicine dispensing box, the liquid separation mechanism includes two inner liquid separation components arranged up and down, the inner liquid separation component inside the primary treatment box is close to its top position and the two are rotatably connected, the inner liquid separation component inside the secondary treatment box is close to its top position and the two are rotatably connected, two outer liquid separation components are symmetrically installed outside the primary treatment box, the outer liquid separation components are respectively connected to the two inner liquid separation components and the medicine dispensing box; a rotating medicine dispensing mechanism, the rotating medicine dispensing mechanism is fixedly installed inside the medicine dispensing box and the two are arranged coaxially, the rotating medicine dispensing mechanism includes a plurality of rotating medicine dispensing components arranged circumferentially, and the rotating medicine dispensing components are connected to the primary treatment box The internal liquid separation components inside the box are rotatably connected, and an internal gear ring coaxial with the medicine dispensing box is arranged inside the medicine dispensing box, and the internal gear ring is meshed with each rotating medicine dispensing component inside it; and a mixing flow component, the mixing flow component and the rotating medicine dispensing component are arranged one by one, the mixing flow component is rotatably connected with the internal liquid separation component inside the secondary treatment box, the mixing flow component is fixedly connected with the corresponding rotating medicine dispensing component above it, the mixing flow component and the rotating medicine dispensing component both include an axial flow tube connected to the corresponding internal liquid separation component, and a porous mixing flow tube connected to the axial flow tube is fixedly arranged at the bottom; the rotating medicine dispensing component also includes a medicine storage box, a porous medicine dispensing cylinder coaxial with the medicine storage box is arranged below the medicine storage box, a medicine guide tube connected to the medicine storage box is fixedly arranged at the bottom of the medicine storage box, the porous medicine dispensing cylinder is rotatably arranged at the bottom of the medicine guide tube, an outer gear ring rotating synchronously with the medicine dispensing cylinder is arranged above the porous medicine dispensing cylinder, and the inner gear ring is meshed with each outer gear ring on its inside.

[0008] The present invention is further configured as follows: the inner liquid separating component includes an inner liquid separating ring, the inner wall of the inner liquid separating ring is fixedly provided with a radial extension seat corresponding one to one with the rotating dispensing component, the outer wall of the inner liquid separating ring is provided with an annular liquid separating cavity coaxial with the inner wall, the radial extension seat is provided with a radial guide cavity connected with the annular liquid separating cavity, the top of the inner liquid separating ring is fixedly provided with a support ring attached to the inner wall of the primary processing box, the inner walls of the primary processing box and the dispensing box are both rotatably provided with a rotating sealed disk close to their bottom, and the rotating sealed disk is fixedly connected to the corresponding support ring.

[0009] The present invention is further configured as follows: the external liquid separation component includes a first radial pipe and a second radial pipe arranged up and down, the first radial pipe is fixedly installed on the outer wall of the primary treatment box and is connected to the corresponding annular liquid separation cavity, a liquid medicine output pipe connected to it is fixedly installed on the peripheral side of the first radial pipe, one end of the liquid medicine output pipe passes through the interior of the medicine dispensing box, and the second radial pipe is fixedly installed on the outer wall of the secondary treatment box and is connected to the corresponding annular liquid separation cavity; a first solenoid valve is installed on both the liquid medicine output pipe and the second radial pipe, an exhaust pipe is installed on the outer wall of the primary treatment box close to the bottom of the inner liquid separation ring, a first water inlet pipe is installed on the outer wall of the primary treatment box close to its top, a first discharge pipe is installed on the outer wall of the primary treatment box close to its bottom, and a second solenoid valve is installed on the first discharge pipe.

[0010] The present invention is further configured such that a vertical diversion pipe is provided between the first radial pipe and the second radial pipe, an airflow input pipe connected to the vertical diversion pipe is fixedly provided at the middle position of the vertical diversion pipe, and a one-way valve is fixedly installed on the airflow input pipe; an exhaust pipe and a second water inlet pipe are installed on the outer wall of the secondary treatment box close to the bottom of the inner liquid separation ring, a second discharge pipe is installed on the outer wall of the secondary treatment box close to its bottom, a third solenoid valve is installed on the second discharge pipe, a bearing base is fixedly installed on the bottom of the secondary treatment box, the output end of the driving motor installed at the bottom of the secondary treatment box is connected to a linkage shaft, and the rotating sealed disk is fixedly installed on the circumferential side of the linkage shaft.

[0011] The present invention is further configured as follows: a load-bearing ring coaxial with the inner gear ring is arranged on the outer side of the inner gear ring, the load-bearing ring is fixedly arranged on the inner wall of the medicine dispensing box, and the load-bearing ring and the inner gear ring are fixedly connected by a plurality of support rods; a first support portion rotatably connected to the corresponding rotating sealed disk is fixedly arranged on the bottom of the porous medicine dispensing cylinder, the first support portion is fixedly arranged on the top of the corresponding axial flow tube, the axial flow tube is rotatably arranged on the corresponding radial extension seat, the peripheral side of the axial flow tube is provided with a liquid inlet located inside the corresponding radial guide cavity, and a fourth solenoid valve is installed on the peripheral side of the medicine guide tube.

[0012] The present invention is further configured such that a positioning ring coaxial with the medicine storage box is rotatably provided on the outer wall of the medicine storage box, the positioning ring and the porous medicine dispensing cylinder therebelow are fixedly connected by a plurality of connecting rods, the outer gear ring is provided above the medicine storage box and the two are fixedly connected by an L-shaped support rod, a first rotating shaft extending to the inside of the medicine guide tube is rotatably provided inside the medicine storage box, a conveying auger is fixedly installed on the circumferential side of the first rotating shaft, a first gear is fixedly provided on the circumferential side of the first rotating shaft, a second gear is fixedly provided on the bottom of the second rotating shaft rotatably provided on the medicine storage box, the second gear is meshed with the first gear, and a third gear fixedly provided on the top of the second rotating shaft is meshed with the inside of the inner gear ring.

[0013] The present invention is further configured such that the flow mixing component also includes a second support portion rotatably connected to the corresponding rotating sealed disk, the second support portion is fixedly connected to the porous mixing tube above it, the second support portion is fixedly arranged on the top of the corresponding axial flow tube, a vertical extension rod is fixedly arranged at the bottom of the porous mixing tube on the flow mixing component, and mixing blades are fixedly arranged on the vertical extension rod and the peripheral side surfaces of the second support portion.

[0014] The present invention has the following beneficial effects:

[0015] 1. In the process of controlling the rotation of the internal liquid separation component of the present invention, each rotating dispensing component on the internal liquid separation component revolves synchronously with it. During this process, the outer gear ring rolls along the inner wall of the inner gear ring, thereby causing each porous dispensing cylinder on the internal liquid separation component to rotate synchronously. In the process of the porous dispensing cylinder revolving and rotating at the same time, the granular flocculating agent inside can be gradually dissolved and centrifugally ejected, thereby achieving sufficient mixing of the flocculating agent in the dispensing box, which can accelerate the dispersion effect of the flocculating agent in the dispensing box.

[0016] 2. After the preparation of the flocculation solution in the dispensing box is completed, the present invention transports the electroplating wastewater to the primary treatment box through the first water inlet pipe until the highest liquid level inside the primary treatment box is reached, and then the first solenoid valve on the liquid output pipe is opened by the controller. After the flocculation solution in the dispensing box fills the inside of the vertical diversion pipe along the liquid output pipe, the first solenoid valve is closed by the controller to stop the continued discharge of the liquid output pipe. Subsequently, the air flow transported to the inside of the vertical diversion pipe will pressurize the flocculation solution therein. Under the action of pressure, the flocculation solution in the upper half of the vertical diversion pipe is pressed into the annular liquid separation cavity in the primary treatment box, and then flows into the axial flow tube from each radial guide cavity. Finally, the pressurized flocculation solution is discharged through the sieve holes on each porous mixing tube. In this way, the flocculation solution can be evenly dispersed in the electroplating wastewater in the primary treatment box, and then the air flow discharged through each porous mixing tube produces an aeration effect, further improving the mixing efficiency and mixing effect of the flocculation agent in the electroplating wastewater in the primary treatment box.

[0017] 3. After the primary treatment tank is emptied, the present invention closes the second solenoid valve through the controller, and uses the lifting pump to transport the filter wastewater along the second water inlet pipe to the secondary treatment tank. The air flow is transported to the inside of the vertical diversion pipe through the air flow input pipe. The air flow presses the flocculation solution in the lower half of the vertical diversion pipe into the annular liquid separation cavity in the secondary treatment tank, and then flows into the axial flow tube from each radial guide cavity. Finally, the pressurized flocculation solution is discharged through the sieve holes on each porous mixing tube. In this way, the flocculation solution can be evenly dispersed in the electroplating wastewater in the secondary treatment tank, and then the air flow discharged from each porous mixing tube produces aeration. After a period of time, the controller closes each one-way valve and the first solenoid valve on the second flow pipe and starts the flocculation reaction. After the flocculation reaction, the controller opens the third solenoid valve, and under the action of the lift pump at the second discharge pipe, all the wastewater and flocculated sludge in the secondary treatment tank are discharged into the filter press equipment along the second discharge pipe. The filter press equipment realizes the filtration treatment of the flocculated sludge. After the secondary treatment tank is emptied, the controller closes the third solenoid valve. After the filtration is completed, the corresponding lift pump can be used again to transport the filtered wastewater to the primary treatment tank. In this way, the multi-stage treatment of electroplating wastewater can be realized through the coordinated use of the primary treatment tank and the secondary treatment tank.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The schematic diagram of the structure of a wastewater treatment system used in electroplating production process.

[0021] Figure 2 for Figure 1 Side view of the structure.

[0022] Figure 3 for Figure 1 Rear view of the structure.

[0023] Figure 4 It is a schematic diagram of the internal structure of the wastewater treatment system in the present invention.

[0024] Figure 5 It is a connection relationship diagram between the medicine dispensing box and the rotating medicine dispensing mechanism in the present invention.

[0025] Figure 6It is a structural schematic diagram of the rotary dispensing mechanism in the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the rotating dispensing component in the present invention.

[0027] Figure 8 for Figure 7 Schematic diagram of the internal structure of the medium-sized medicine storage box.

[0028] Fig. 9 It is a structural schematic diagram of the primary processing box in the present invention.

[0029] Fig.10 for Fig. 9 Schematic diagram of the structure from an upward perspective.

[0030] Fig.11 It is a structural schematic diagram of the secondary treatment box in the present invention.

[0031] Fig.12 for Fig.11 Rear view of the structure.

[0032] Fig.13 It is a cross-sectional view of the transverse structure of the secondary treatment box in the present invention.

[0033] Fig.14 It is a schematic diagram of the structure of the mixed flow component in the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1-primary treatment box, 101-exhaust pipe, 102-first water inlet pipe, 103-first discharge pipe, 104-second solenoid valve, 2-secondary treatment box, 201-second water inlet pipe, 202-second discharge pipe, 203-third solenoid valve, 204-bearing base, 205-drive motor, 206-linkage shaft, 3-medicine dispensing box, 4-liquid separation mechanism, 401-inner liquid separation ring, 402-radial extension seat, 403-annular liquid separation chamber, 404-radial guide chamber, 405-support ring, 406-rotating closed disk, 407-first radial pipe, 408-second radial pipe, 409-liquid output pipe, 410-first solenoid valve, 411-vertical Diverter pipe, 412-air flow input pipe, 413-one-way valve, 5-rotating dispensing mechanism, 6-rotating dispensing assembly, 601-axial flow tube, 602-porous mixing flow cylinder, 603-medicine storage box, 604-porous dispensing cylinder, 605-drug guide tube, 606-external gear ring, 607-first support part, 608-liquid inlet, 609-fourth solenoid valve, 610-positioning ring, 611-connecting rod, 612-first rotating shaft, 613-conveying auger, 614-first gear, 615-second gear, 616-third gear, 7-internal gear ring, 8-mixing flow assembly, 801-second support part, 802-mixing flow blade, 9-bearing ring, 10-support rod. DETAILED DESCRIPTION

[0036] 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 described embodiments 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.

[0037] For specific embodiment 1, please refer to Figure 1-14 The present invention is a wastewater treatment system for electroplating production process, comprising a primary treatment box 1, a liquid separation mechanism 4, a rotating dispensing mechanism 5 and a mixed flow component 8; a secondary treatment box 2 is fixedly installed at the bottom of the primary treatment box 1, a set of filter press equipment (used for filter pressing and dehydrating sludge generated by flocculation) is arranged on one side of the secondary treatment box 2, and a dispensing box 3 is fixedly installed on the top of the primary treatment box 1; the liquid separation mechanism 4 is installed between the primary treatment box 1, the secondary treatment box 2 and the dispensing box 3, and the liquid separation mechanism 4 includes two internal liquid separation components arranged up and down, the internal liquid separation component inside the primary treatment box 1 is close to its top position and the two are rotatably connected, the internal liquid separation component inside the secondary treatment box 2 is close to its top position and the two are rotatably connected, and two external liquid separation components are symmetrically installed outside the primary treatment box 1, and the external liquid separation components are connected to the two internal liquid separation components and the dispensing box 3 respectively;

[0038] The rotating dispensing mechanism 5 is fixedly installed inside the dispensing box 3 and the two are coaxially arranged. The rotating dispensing mechanism 5 includes a plurality of rotating dispensing components 6 arranged in an annular direction. The rotating dispensing component 6 is rotationally connected to the internal liquid separation component inside the primary treatment box 1. The dispensing box 3 is provided with an internal gear ring 7 coaxial therewith, and the internal gear ring 7 is meshed with each rotating dispensing component 6 inside thereof; the mixing component 8 is arranged one-to-one with the rotating dispensing component 6, the mixing component 8 is rotationally connected to the internal liquid separation component inside the secondary treatment box 2, and the mixing component 8 is fixedly connected to the corresponding rotating dispensing component 6 above it. The mixing component 8 and the rotating dispensing component 6 both include an axial flow tube 601 connected to the corresponding internal liquid separation component, and a porous mixing tube 602 connected thereto is fixedly provided at the bottom of the axial flow tube 601;

[0039] The rotating dispensing component 6 also includes a medicine storage box 603, below which is arranged a porous dispensing cylinder 604 coaxial with the medicine storage box 603, at the bottom of which is fixed a medicine guide tube 605 connected to the medicine storage box 603, the porous dispensing cylinder 604 is rotatably arranged at the bottom of the medicine guide tube 605, above which is arranged an outer toothed ring 606 which rotates synchronously with the porous dispensing cylinder 604, the inner toothed ring 7 is meshed with the outer toothed rings 606 on its inner side, in the process of controlling the rotation of the internal liquid separation component, the various rotating dispensing components 6 on the internal liquid separation component revolve synchronously with it, during which the outer toothed ring 606 rolls along the inner wall of the inner toothed ring 7, thereby causing the various porous dispensing cylinders 604 on the internal liquid separation component to rotate synchronously, and in the process of the porous dispensing cylinder 604 revolving and rotating at the same time, the granular flocculation treatment agent in the dispensing box 3 can be gradually dissolved and centrifugally ejected, thereby achieving sufficient mixing of the flocculation treatment agent in the dispensing box 3, and accelerating the dispersion effect of the flocculation treatment agent in the dispensing box 3.

[0040] In this embodiment of the present invention, the internal liquid separation component includes an internal liquid separation ring 401, the inner wall of the internal liquid separation ring 401 is fixedly provided with a radial extension seat 402 corresponding to the rotating dispensing component 6, the outer wall of the internal liquid separation ring 401 is provided with an annular liquid separation cavity 403 coaxial with the inner liquid separation cavity, the radial extension seat 402 is provided with a radial guide cavity 404 connected with the annular liquid separation cavity 403, the top of the internal liquid separation ring 401 is fixedly provided with a support ring 405 attached to the inner wall of the primary treatment box 1, the inner walls of the primary treatment box 1 and the dispensing box 3 are both rotatably provided with a rotating sealed disk 406 close to their bottom positions, the rotating sealed disk 406 is fixedly connected to the corresponding support ring 405, and this structure can ensure that the rotating sealed disk 406 rotates synchronously with the inner liquid separation ring 401.

[0041] In this embodiment of the present invention, the external liquid separation component includes a first radial pipe 407 and a second radial pipe 408 arranged up and down, the first radial pipe 407 is fixedly installed on the outer wall of the primary treatment box 1 and is connected to the corresponding annular liquid separation cavity 403, a liquid medicine output pipe 409 connected thereto is fixedly installed on the side surface of the first radial pipe 407, one end of the liquid medicine output pipe 409 passes through the inside of the medicine dispensing box 3, and the second radial pipe 408 is fixedly installed on the outer wall of the secondary treatment box 2 and is connected to the corresponding annular liquid separation cavity 403;

[0042] The first electromagnetic valve 410 is installed on the liquid output pipe 409 and the second radial pipe 408, an exhaust pipe 101 is installed on the outer wall of the primary treatment box 1 close to the bottom of the inner liquid separation ring 401, a first water inlet pipe 102 is installed on the outer wall of the primary treatment box 1 close to its top, a first drainage pipe 103 is installed on the outer wall of the primary treatment box 1 close to its bottom (the first drainage pipe 103 is connected to the water inlet of the filter press), a second electromagnetic valve 104 is installed on the first drainage pipe 103, and the first radial pipe 407 is connected to the second A vertical shunt pipe 411 is provided between the radial pipes 408; after the flocculation solution in the dispensing box 3 is prepared, the electroplating wastewater is transported to the first treatment box 1 through the first water inlet pipe 102 until the highest liquid level inside the first treatment box 1 is reached (i.e., the electroplating wastewater submerges the porous mixing cylinder 602 in the first treatment box 1), and then the first solenoid valve 410 on the liquid output pipe 409 is opened by the controller. After the flocculation solution in the dispensing box 3 fills the vertical shunt pipe 411 along the liquid output pipe 409, The first solenoid valve 410 can be closed by the controller to stop the continued discharge of the liquid from the liquid output pipe 409. Then, the air flow transported into the vertical diversion pipe 411 will pressurize the flocculation solution therein. Under the action of the pressure, the flocculation solution in the upper part of the vertical diversion pipe 411 is pressed into the annular liquid separation chamber 403 in the primary treatment box 1, and then flows into the axial flow pipe 601 through each radial guide chamber 404. Finally, the pressurized flocculation solution is discharged through the sieve holes on each porous mixing tube 602. This method can make the flocculation solution be evenly dispersed in the electroplating wastewater in the primary treatment box 1, and then the air flow discharged through each porous mixing tube 602 produces aeration, further improving the mixing efficiency and mixing effect of the flocculation agent in the electroplating wastewater in the primary treatment box 1, thereby realizing the flocculation reaction of the electroplating wastewater in the primary treatment box 1, and the flocculated sludge after the flocculation reaction settles at the bottom of the primary treatment box 1. After a period of aeration, the controller stops supplying air to the inside of the vertical diversion pipe 411.

[0043] Specific embodiment 2, on the basis of specific embodiment 1, an air flow input pipe 412 connected to the vertical shunt pipe 411 is fixedly provided in the middle of the vertical shunt pipe 411, and a one-way valve 413 is fixedly installed on the air flow input pipe 412. After the flocculation solution in the medicine dispensing box 3 fills the inside of the vertical shunt pipe 411 along the medicine liquid output pipe 409, the first solenoid valve 410 is closed by the controller to stop the continued discharge of the medicine liquid output pipe 409, and then the controller controls each one-way valve 413 to open, and the air flow is transported to the inside of the vertical shunt pipe 411 through the air flow input pipe 412, and the air is The flocculation solution in the upper part of the vertical shunt pipe 411 is pressed into the annular liquid separation chamber 403 in the primary treatment tank 1. After aeration for a period of time, each one-way valve 413 is closed by the controller and the flocculation reaction is started. After the flocculation reaction, the second solenoid valve 104 is opened by the controller. Under the action of the water pressure in the primary treatment tank 1, all the wastewater and flocculated sludge therein are discharged into the filter press equipment along the first discharge pipe 103. The filter press equipment realizes the filter press treatment of the flocculated sludge. After the primary treatment tank 1 is emptied, the second solenoid valve 104 is closed by the controller.

[0044] An exhaust pipe 101 and a second water inlet pipe 201 are installed on the outer wall of the secondary treatment box 2 near the bottom of the inner liquid separation ring 401 (the second water inlet pipe 201 is connected to the drain outlet of the filter press equipment, specifically, the drain outlet of the filter press equipment is connected to a lift pump, and the water outlet of the lift pump is connected to the second water inlet pipe 201), a second discharge pipe 202 is installed on the outer wall of the secondary treatment box 2 near its bottom (a lift pump is connected to one side of the second discharge pipe 202, and the lift pump is connected to the filter press equipment), a third solenoid valve 203 is installed on the second discharge pipe 202, a bearing base 204 is fixedly installed at the bottom of the secondary treatment box 2, and the output end of the drive motor 205 installed at the bottom of the secondary treatment box 2 is connected to the linkage shaft 20 6. The rotating sealed disk 406 is fixedly installed on the side surface of the linkage shaft 206; during the preparation of the flocculation solution and the flocculation reaction, the rotation of the linkage shaft 206 is controlled by the driving motor 205 to drive the synchronous rotation of the internal liquid separation ring 401 inside the primary treatment box 1 and the secondary treatment box 2, thereby driving the simultaneous revolution and rotation of each rotating dispensing component 6. At the same time, the rotating dispensing component 6 drives the simultaneous revolution and rotation of the mixing flow component 8. After the preparation of the flocculation solution is completed, the rotation of the linkage shaft 206 continues to drive the synchronous rotation of the rotating dispensing component 6 and the mixing flow component 8, thereby enabling the electroplating wastewater in the primary treatment box 1 or the electroplating wastewater in the secondary treatment box 2 to be fully mixed.

[0045] In this embodiment of the present invention, a bearing ring 9 coaxial with the inner gear ring 7 is arranged on the outer side thereof, the bearing ring 9 is fixedly arranged on the inner wall of the medicine dispensing box 3, and the bearing ring 9 and the inner gear ring 7 are fixedly connected by a plurality of supporting rods 10; a first supporting portion 607 rotatably connected to the corresponding rotating sealing disk 406 is fixedly arranged at the bottom of the porous medicine dispensing cylinder 604, the first supporting portion 607 is fixedly arranged on the top of the corresponding axial flow tube 601, the axial flow tube 601 is rotatably arranged on the corresponding radial extension seat 402, and a liquid inlet 608 located inside the corresponding radial guide cavity 404 is opened on the peripheral side of the axial flow tube 601, and the liquid inlet 608 can be made to enter through the setting of the liquid inlet 608 The flocculation solution in the radial flow guide cavity 404 flows into each axial flow tube 601, and a fourth solenoid valve 609 is installed on the side surface of the drug guide tube 605; during the preparation of the flocculation solution, each fourth solenoid valve 609 is opened simultaneously by the controller, and then the upper and lower inner liquid separation rings 401 are controlled to rotate in the forward direction by the linkage shaft 206, so that the solid flocculation agent in the drug storage box 603 can fall into the porous drug dispensing cylinder 604 along the drug guide tube 605. The solid flocculation agent falling into the porous drug dispensing cylinder 604 is gradually dissolved under the rotation of the porous drug dispensing cylinder 604 and discharged into the drug dispensing box 3, thereby realizing efficient mixing and preparation of the flocculation solution.

[0046] In this embodiment of the present invention, a positioning ring 610 coaxial with the medicine storage box 603 is rotatably provided on the outer wall thereof, and the positioning ring 610 is fixedly connected to the porous medicine dispensing cylinder 604 below it by a plurality of connecting rods 611, an outer toothed ring 606 is provided above the medicine storage box 603 and the two are fixedly connected by an L-shaped support rod, a first rotating shaft 612 extending to the inside of the medicine guide tube 605 is rotatably provided inside the medicine storage box 603, a conveying auger 613 is fixedly installed on the side surface of the first rotating shaft 612, a first gear 614 is fixedly provided on the side surface of the first rotating shaft 612, a second gear 615 is fixedly provided at the bottom of the second rotating shaft rotatably provided on the medicine storage box 603, the second gear 615 is meshed with the first gear 614, and a third gear 616 fixedly provided on the top of the second rotating shaft is meshed with the inside of the inner toothed ring 7; in the flocculation During the solution preparation process, each fourth solenoid valve 609 is opened simultaneously by the controller, and then in the process of controlling the positive rotation of the upper and lower inner liquid separation rings 401 by the linkage shaft 206, the third gear 616 meshes and rolls along the inner wall of the inner gear ring 7, and the second gear 615 that rotates synchronously with the third gear 616 drives the first gear 614 to rotate, thereby realizing the self-rotation of each first rotating shaft 612. During the rotation of the first rotating shaft 612, the quantitative solid flocculation agent in the medicine storage box 603 is caused to fall into the porous medicine dispensing cylinder 604 along the medicine guide tube 605 by the rotation of the conveying auger 613. The solid flocculation agent that falls into the porous medicine dispensing cylinder 604 is gradually dissolved and discharged into the medicine dispensing box 3 under the rotation of the porous medicine dispensing cylinder 604, thereby realizing the efficient mixing and preparation of the flocculation solution;

[0047] After the upper and lower inner liquid separatory rings 401 are controlled to rotate forwardly by the linkage shaft 206 so that a certain amount of solid flocculating agent is transported into each porous dispensing barrel 604, each fourth solenoid valve 609 is closed by the controller, and then the upper and lower inner liquid separatory rings 401 are controlled to rotate in the opposite direction by the linkage shaft 206. During the reverse rotation of the inner liquid separatory ring 401, each rotating dispensing assembly 6 thereon is driven to revolve in the opposite direction. During this process, the third gear 616 meshes and rolls in the opposite direction along the inner wall of the inner gear ring 7, thereby causing the conveying auger 613 to rotate in the opposite direction without transporting the solid flocculating agent downward. At the same time, each outer gear ring 606 meshes and rolls in the opposite direction along the inner wall of the inner gear ring 7, driving the porous dispensing barrel 604 to rotate. During the continuous rotation of each porous dispensing barrel 604, the solid flocculating agent therein is gradually dissolved and discharged into the dispensing box 3, thereby realizing efficient mixing and preparation of the flocculation solution. In the subsequent flocculation reaction process, the upper and lower inner liquid separatory rings 401 are controlled to rotate in the opposite direction by the linkage shaft 206.

[0048] In this embodiment of the present invention, the mixing flow component 8 also includes a second support portion 801 rotatably connected to the corresponding rotating sealed disk 406, the second support portion 801 is fixedly connected to the porous mixing flow cylinder 602 above it, and the second support portion 801 is fixedly arranged on the top of the corresponding axial flow tube 601. A vertical extension rod is fixedly arranged at the bottom of the porous mixing flow cylinder 602 on the mixing flow component 8, and the vertical extension rod and the side surface of the second support portion 801 are fixedly arranged with mixing blades 802. During the rotation of each porous mixing flow cylinder 602 in the primary treatment box 1, the mixing blades 802 that rotate synchronously with the porous mixing flow cylinder 602 are used to improve the mixing effect of the wastewater in the primary treatment box 1.

[0049] After the primary treatment tank 1 is emptied, the second solenoid valve 104 is closed by the controller, and the lifting pump on one side of the filter press equipment is turned on at the same time. The filter press wastewater is transported to the secondary treatment tank 2 along the second water inlet pipe 201 by the lifting pump, and then the lifting pump is turned off and the one-way valve 413 and the first solenoid valve 410 on the second radial flow pipe 408 are turned on. The air flow is transported to the inside of the vertical diverter pipe 411 through the air flow input pipe 412. The flocculation solution in the lower half of the vertical diverter pipe 411 is pressed into the annular liquid separation chamber 403 in the secondary treatment tank 2 by the air flow, and then flows into the axial flow tube 601 from each radial guide chamber 404. Finally, the pressurized flocculation solution is discharged through the sieve holes on each porous mixing tube 602. In this way, the flocculation solution can be evenly dispersed in the electroplating wastewater in the secondary treatment tank 2, and then the air flow discharged from each porous mixing tube 602 produces aeration.

[0050] After aeration for a period of time, the controller closes each one-way valve 413 and the first solenoid valve 410 on the second flow pipe 408 and starts the flocculation reaction. After the flocculation reaction, the controller opens the third solenoid valve 203. Under the action of the lifting pump at the position of the second discharge pipe 202, all the wastewater and flocculated sludge in the secondary treatment tank 2 are discharged into the filter press equipment along the second discharge pipe 202. The filter press equipment realizes the filter press treatment of the flocculated sludge. After the secondary treatment tank 2 is emptied, the third solenoid valve 203 is closed by the controller. After the filter press is completed, the filter press wastewater can be transported to the primary treatment tank 1 again through the corresponding lifting pump. In this way, the multi-stage treatment of electroplating wastewater can be realized through the coordinated use of the primary treatment tank 1 and the secondary treatment tank 2 until the wastewater treatment reaches a certain treatment standard.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wastewater treatment system for electroplating production process, characterized in that: include: A primary treatment box (1), a secondary treatment box (2) is fixedly mounted on the bottom of the primary treatment box (1), a set of filter pressing equipment is arranged on one side of the secondary treatment box (2), and a medicine dispensing box (3) is fixedly mounted on the top of the primary treatment box (1); A liquid separation mechanism (4), the liquid separation mechanism (4) being installed between the primary treatment box (1), the secondary treatment box (2) and the medicine dispensing box (3), the liquid separation mechanism (4) comprising two internal liquid separation components arranged in an upper and lower manner, the internal liquid separation component in the primary treatment box (1) being close to the top position thereof and the two being rotatably connected, the internal liquid separation component in the secondary treatment box (2) being close to the top position thereof and the two being rotatably connected, the primary treatment box (1) being symmetrically installed with two external liquid separation components on the outside, the external liquid separation components being connected to the two internal liquid separation components and the medicine dispensing box (3) respectively; A rotating dispensing mechanism (5), the rotating dispensing mechanism (5) being fixedly mounted inside the dispensing box (3) and the two being arranged coaxially, the rotating dispensing mechanism (5) comprising a plurality of rotating dispensing components (6) arranged in an annular direction, the rotating dispensing components (6) being rotationally connected to the internal liquid separation components inside the primary treatment box (1), the dispensing box (3) being provided with an internal gear ring (7) coaxial therewith, the internal gear ring (7) being meshed with each rotating dispensing component (6) inside the internal gear ring; and a flow mixing component (8), wherein the flow mixing component (8) and the rotating dispensing component (6) are arranged in a one-to-one correspondence, the flow mixing component (8) is rotationally connected to an internal liquid separation component inside the secondary treatment box (2), the flow mixing component (8) is fixedly connected to a corresponding rotating dispensing component (6) above it, the flow mixing component (8) and the rotating dispensing component (6) both include an axial flow tube (601) arranged in communication with the corresponding internal liquid separation component, and a porous flow mixing cylinder (602) is fixedly arranged at the bottom of the axial flow tube (601) in communication with the corresponding internal liquid separation component; The rotating medicine dispensing assembly (6) further comprises a medicine storage box (603), a multi-hole medicine dispensing cylinder (604) coaxial with the medicine storage box (603) is arranged below the medicine storage box (603), a medicine guide tube (605) connected with the medicine storage box (603) is fixedly arranged at the bottom of the medicine storage box (603), the multi-hole medicine dispensing cylinder (604) is rotatably arranged at the bottom of the medicine guide tube (605), an outer toothed ring (606) rotating synchronously with the medicine storage box (603) is arranged above the medicine storage box (603), and the inner toothed ring (7) is meshed with each outer toothed ring (606) inside the medicine storage box (603); The inner liquid separation component comprises an inner liquid separation ring (401), the inner wall of the inner liquid separation ring (401) is fixedly provided with a radial extension seat (402) corresponding to the rotating medicine dispensing component (6), the outer wall of the inner liquid separation ring (401) is provided with an annular liquid separation cavity (403) coaxial with the inner liquid separation cavity, the radial extension seat (402) is provided with a radial guide cavity (404) connected with the annular liquid separation cavity (403), the top of the inner liquid separation ring (401) is fixedly provided with a support ring (405) attached to the inner wall of the primary treatment box (1), the inner walls of the primary treatment box (1) and the medicine dispensing box (3) are both rotatably provided with a rotating sealed disk (406) close to their bottoms, and the rotating sealed disk (406) is fixedly connected to the corresponding support ring (405); The external liquid separation component comprises a first radial flow pipe (407) and a second radial flow pipe (408) arranged in an upper and lower manner, wherein the first radial flow pipe (407) is fixedly mounted on the outer wall of the primary treatment box (1) and is connected to the corresponding annular liquid separation cavity (403), a liquid medicine output pipe (409) connected thereto is fixedly mounted on the peripheral side of the first radial flow pipe (407), one end of the liquid medicine output pipe (409) passes through the interior of the medicine dispensing box (3), and the second radial flow pipe (408) is fixedly mounted on the outer wall of the secondary treatment box (2) and is connected to the corresponding annular liquid separation cavity (403); The liquid medicine output pipe (409) and the second radial flow pipe (408) are both installed with a first solenoid valve (410); an exhaust pipe (101) is installed on the outer wall of the primary treatment box (1) close to the bottom of the inner liquid separation ring (401); a first water inlet pipe (102) is installed on the outer wall of the primary treatment box (1) close to the top; a first drainage pipe (103) is installed on the outer wall of the primary treatment box (1) close to the bottom; and a second solenoid valve (104) is installed on the first drainage pipe (103); A vertical flow divider (411) is provided in communication between the first radial flow pipe (407) and the second radial flow pipe (408); an airflow input pipe (412) in communication with the vertical flow divider (411) is fixedly provided in the middle of the vertical flow divider (411); a one-way valve (413) is fixedly installed on the airflow input pipe (412); An exhaust pipe (101) and a second water inlet pipe (201) are installed on the outer wall of the secondary treatment box (2) close to the bottom of the inner liquid separation ring (401); a lifting pump is connected to the drainage port of the filter press equipment, and the water outlet of the lifting pump is connected to the second water inlet pipe (201); a second drainage pipe (202) is installed on the outer wall of the secondary treatment box (2) close to the bottom; a lifting pump is connected to one side of the second drainage pipe (202), and the lifting pump is connected to the filter press equipment; a third solenoid valve (203) is installed on the second drainage pipe (202); a bearing base (204) is fixedly installed on the bottom of the secondary treatment box (2); an output end of a driving motor (205) installed on the bottom of the secondary treatment box (2) is connected to a linkage shaft (206); and the rotating sealed disk (406) is fixedly installed on the peripheral side of the linkage shaft (206); A first support portion (607) rotatably connected to the corresponding rotating sealed disk (406) is fixedly arranged at the bottom of the porous drug dispensing cylinder (604); the first support portion (607) is fixedly arranged on the top of the corresponding axial flow tube (601); the axial flow tube (601) is rotatably arranged on the corresponding radial extension seat (402); a liquid inlet (608) located inside the corresponding radial guide cavity (404) is opened on the peripheral side of the axial flow tube (601); and a fourth solenoid valve (609) is installed on the peripheral side of the drug guiding tube (605).

2. A wastewater treatment system for electroplating production process according to claim 1, characterized in that: A bearing ring (9) coaxial with the inner gear ring (7) is arranged outside the inner gear ring (7); the bearing ring (9) is fixedly arranged on the inner wall of the medicine dispensing box (3); the bearing ring (9) and the inner gear ring (7) are fixedly connected via a plurality of support rods (10).

3. A wastewater treatment system for electroplating production process according to claim 2, characterized in that: The outer wall of the medicine storage box (603) is rotatably provided with a coaxial positioning ring (610), the positioning ring (610) and the porous medicine dispensing cylinder (604) below it are fixedly connected via a plurality of connecting rods (611), the outer gear ring (606) and the positioning ring (610) are fixedly connected via an L-shaped support rod, the inside of the medicine storage box (603) is rotatably provided with a first rotating shaft (612) extending to the inside of the medicine guiding tube (605), a conveying auger (613) is fixedly installed on the peripheral side of the first rotating shaft (612), a first gear (614) is fixedly provided on the peripheral side of the first rotating shaft (612), a second gear (615) is fixedly provided at the bottom of the second rotating shaft rotatably provided on the medicine storage box (603), the second gear (615) is meshed with the first gear (614), and a third gear (616) fixedly provided on the top of the second rotating shaft is meshed with the inside of the inner gear ring (7).

4. A wastewater treatment system for electroplating production process according to claim 3, characterized in that: The flow mixing component (8) further comprises a second support portion (801) rotatably connected to the corresponding rotating sealed disk (406); the second support portion (801) is fixedly connected to the porous flow mixing cylinder (602) above it; the second support portion (801) is fixedly arranged on the top of the corresponding axial flow tube (601); a vertical extension rod is fixedly arranged at the bottom of the porous flow mixing cylinder (602) on the flow mixing component (8); and the vertical extension rod and the peripheral side surface of the second support portion (801) are fixedly arranged with mixing vanes (802).

Images