Modularized nanoscale zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device

Abstract

The utility model relates to the field of heavy metal pollution treatment, in particular to a modularized nanoscale zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device which comprises a blocking wall, a mounting groove, an electric push rod, an L-shaped plate, a first motor, a transmission shaft, a stirring rod, a mounting frame and a roller. Four electric push rods are distributed on the upper side of the left end of the blocking wall in an array mode, the telescopic ends of the four electric push rods are connected with an L-shaped plate, and a first motor is installed on the rear side of the upper end of the L-shaped plate; by arranging the first motor, the first motor drives the transmission shaft to drive the stirring rod to rotate, mixed purification of heavy metal sewage and nanoscale zero-valent iron in the mounting groove is accelerated, the electric push rod pushes the L-shaped plate to transversely move, the first motor and connecting parts integrally shake to enhance the reaction efficiency, and the mounting frame supports the moving track of the L-shaped plate; the rollers reduce contact friction, and the purification speed is increased through double movement synergism.

Description

Technical Field

[0001] This utility model relates to the field of heavy metal pollution treatment, and in particular to a modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device. Background Technology

[0002] The modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device is a groundwater heavy metal pollution remediation equipment. It uses highly active nano-zero-valent iron media filled inside the wall to convert heavy metal ions in the water into low-toxicity or inert precipitates by utilizing its strong reducing properties, thereby achieving in-situ high-efficiency purification. It is suitable for contaminated site remediation and industrial wastewater treatment, and has both environmental protection and long-term effectiveness.

[0003] Existing modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment devices lack mixing and stirring functions. Because of the lack of mixing and stirring functions, purification can only be achieved through natural contact between heavy metal wastewater and nano-zero-valent iron, resulting in slow purification speed and poor purification effect.

[0004] Therefore, given that the existing modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device lacks a mixing and stirring function, and can only be purified through natural contact between the media, resulting in slow purification speed and poor effect, there is an urgent need to design a new type of modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device. Utility Model Content

[0005] In order to overcome the lack of mixing and stirring function in the existing modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device, which can only be purified by natural contact between the media, the purification speed is slow and the effect is poor.

[0006] The technical solution of this utility model is as follows: a modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device, including a barrier wall; it also includes an installation groove, electric push rods, an L-shaped plate, a first motor, a transmission shaft, stirring rods, an installation frame, and rollers. The front end of the barrier wall has an installation groove. Four electric push rods are arrayed on the upper left side of the barrier wall. The telescopic ends of the four electric push rods are connected to the L-shaped plate. The upper rear side of the L-shaped plate is equipped with the first motor. The output end of the first motor passes through the left end of the L-shaped plate and is connected to the transmission shaft. The right end of the transmission shaft passes through the left end of the barrier wall. Several stirring rods are installed on the right side of the outer surface of the transmission shaft. An installation frame is installed on the left end of the barrier wall below the electric push rods. Several rollers are rotatably connected inside the installation frame. The outer surface of the rollers is in contact with the lower end of the L-shaped plate.

[0007] Preferably, by setting up a first motor, the first motor drives the transmission shaft to rotate, and the rotation of the transmission shaft drives the stirring rod to rotate, thereby stirring the heavy metal wastewater and nano-zero ferric iron inside the installation tank to accelerate the purification speed. Then, by setting up an electric push rod, the electric push rod drives the L-shaped plate to move, and the movement of the L-shaped plate drives the first motor and its connected parts to move together, thereby causing the heavy metal wastewater and nano-zero ferric iron to sway laterally on the basis of stirring, further accelerating the purification speed. When the L-shaped plate moves, it is supported by the installation frame and the contact friction is reduced by the roller, thereby achieving the purpose of accelerating the purification speed. This solves the problem that the existing modular nano-zero ferric iron composite permeable reactive wall heavy metal pollution treatment device lacks a mixing and stirring function. Because of the lack of a mixing and stirring function, the heavy metal wastewater and nano-zero ferric iron can only be purified by natural contact, resulting in slow purification speed and poor purification effect.

[0008] Preferably, guide blocks are installed on the upper sides of both the left and right ends of the installation groove, and a sliding groove is opened at the front end of each of the two guide blocks. A slide rail is slidably connected inside each of the two slide rails, and an installation bracket is connected between the two slide rails. An ultrafiltration membrane is installed inside the installation bracket.

[0009] Preferably, a sliding frame is installed at the lower end of the mounting bracket, a second motor is installed at the rear left end of the sliding frame, the output end of the second motor passes through the left end of the sliding frame and is connected to a double-acting lead screw, the right end of the double-acting lead screw is rotatably connected to the inner right side of the sliding frame, and the outer surface of the double-acting lead screw is threaded with symmetrical main sliders, and baffles are installed at the lower ends of the two main sliders.

[0010] Preferably, a limiting rod is installed on the front right side of the inner side of the sliding frame, and the outer surface of the limiting rod is slidably connected with two symmetrical auxiliary sliders. The lower ends of the two auxiliary sliders are connected to the upper ends of their corresponding baffles.

[0011] Preferably, a water inlet is provided on the upper rear side of the barrier wall, a sliding groove is provided on the upper end of the barrier wall above the water inlet, a connecting plate is installed on the lower front side of the barrier wall, and a water outlet is provided on the lower front side of the connecting plate.

[0012] Preferably, a lifting frame is installed at the upper end of the barrier wall on the right side of the sliding groove. A third motor is installed at the upper end of the lifting frame. The output end of the third motor passes through the upper end of the lifting frame and is connected to a screw. The lower end of the screw is rotatably connected to the lower inner side of the lifting frame. A slide block is threaded onto the outer surface of the screw. A gate is installed at the left end of the slide block and is slidably connected to the sliding groove.

[0013] Preferably, a limiting frame is installed on the upper front side of the barrier wall, and a sealing door is slidably connected inside the limiting frame.

[0014] The beneficial effects of this utility model are:

[0015] 1. The first motor drives the transmission shaft to rotate the stirring rod, accelerating the mixing and purification of heavy metal wastewater and nano-zero valent iron in the installation tank. The electric push rod simultaneously pushes the L-shaped plate to move laterally, causing the first motor and its connecting parts to sway horizontally. Combined with the roller support of the installation frame and the reduction of frictional resistance, a compound motion mode of rotational stirring and lateral swaying is formed. The synergistic effect of the rotational stirring of the first motor and the lateral swaying driven by the electric push rod enables nano-zero valent iron and wastewater to achieve efficient contact reaction in three-dimensional space. The roller support structure significantly reduces mechanical energy consumption while ensuring the smooth movement of the L-shaped plate. The superposition effect of the dual motion mode improves the pollutant purification efficiency, and the stability of the device operation is better than that of the traditional single stirring mode. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the installation tank structure of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the L-shaped plate structure of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0019] Figure 4 The diagram shown is a schematic of the sliding frame structure of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0020] Figure 5 The diagram shown is a schematic diagram of the first motor structure of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0021] Figure 6 The diagram shown is a schematic of the lifting frame structure of the modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Barrier wall; 2. Mounting groove; 3. Electric push rod; 4. L-shaped plate; 5. First motor; 6. Drive shaft; 7. Stirring rod; 8. Mounting frame; 9. Drum; 10. Guide block; 11. Slide groove; 12. Slide rail; 13. Mounting bracket; 14. Ultrafiltration membrane; 15. Sliding frame; 16. Second motor; 17. Bidirectional lead screw; 18. Main slider; 19. Baffle; 20. Limiting rod; 21. Secondary slider; 22. Inlet; 23. Sliding groove; 24. Connecting plate; 25. Outlet; 26. Lifting frame; 27. Third motor; 28. Screw; 29. ​​Slide seat; 30. Gate; 31. Limiting frame; 32. Sealing door. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-6 This utility model provides an embodiment of a modular nano-zero-valent iron composite permeable reactive wall heavy metal pollution treatment device, including a barrier wall 1; it also includes an installation groove 2, electric push rods 3, an L-shaped plate 4, a first motor 5, a transmission shaft 6, stirring rods 7, an installation frame 8, and a roller 9. The barrier wall 1 has an installation groove 2 at its front end. Four electric push rods 3 are arrayed on the upper left side of the barrier wall 1. The telescopic ends of the four electric push rods 3 are connected to the L-shaped plate 4. The first motor 5 is installed on the upper rear side of the L-shaped plate 4. The output end of the first motor 5 passes through the left end of the L-shaped plate 4 and is connected to the transmission shaft 6. The right end of the transmission shaft 6 passes through the left end of the barrier wall 1. Several stirring rods 7 are installed on the right side of the outer surface of the transmission shaft 6. The installation frame 8 is installed on the left end of the barrier wall 1 below the electric push rods 3. The frame 8 has several rotating drums 9 inside, and the outer surface of the drums 9 is in contact with the lower end of the L-shaped plate 4. A first motor 5 is installed, which drives the transmission shaft 6 to rotate. When the transmission shaft 6 rotates, it drives the stirring rod 7 to rotate, thereby stirring the heavy metal wastewater and nano-zero ferric iron inside the installation tank 2 to accelerate the purification speed. An electric push rod 3 is installed, which drives the L-shaped plate 4 to move. When the L-shaped plate 4 moves, it drives the first motor 5 and its connected parts to move together, thereby causing the heavy metal wastewater and nano-zero ferric iron to sway laterally on the basis of stirring, further accelerating the purification speed. When the L-shaped plate 4 moves, it is supported by the installation frame 8 and the drums 9 are used to reduce the contact friction, thereby achieving the purpose of accelerating the purification speed.

[0025] Please see Figures 1-5In this embodiment, guide blocks 10 are installed on the upper sides of both the left and right ends of the mounting groove 2. Each guide block 10 has a sliding groove 11 at its front end. A slide rail 12 is slidably connected inside each slide groove 11. A mounting bracket 13 is connected between the two slide rails 12. An ultrafiltration membrane 14 is installed inside the mounting bracket 13. By setting the guide blocks 10, heavy metal wastewater and nano-zero valent iron flow towards the ultrafiltration membrane 14. The ultrafiltration membrane 14 allows water to flow through while retaining nano-zero valent iron, thus achieving separation. Furthermore, by setting the slide grooves 11 and slide rails 12, the mounting bracket 13 and ultrafiltration membrane 14 can be pulled out for cleaning or replacement, thereby achieving modular installation and media separation. A sliding frame 15 is installed at the lower end of the mounting bracket 13. A second motor 16 is installed on the rear left side of the sliding frame 15. The output end of the second motor 16 passes through the left end of the sliding frame 15 and is connected to a bidirectional lead screw 17. The right end of the bidirectional lead screw 17 is rotatably connected to the right side of the sliding frame 15. The outer surface of the bidirectional lead screw 17 is threaded with... The two main sliders 18 are symmetrically arranged, and each of them has a baffle 19 installed at its lower end. A second motor 16 is installed, which drives a bidirectional lead screw 17 to rotate. When the bidirectional lead screw 17 rotates, it restricts the rotation of the main sliders 18 through a sliding frame 15, thereby causing the two main sliders 18 to move relative to each other. When the main sliders 18 move, they also cause the two baffles 19 to move relative to each other, thus controlling the opening and closing of the water outlet in the purification area. A limit rod 20 is installed on the front right side of the inner side of the sliding frame 15. The outer surface of the limit rod 20 is slidably connected to two symmetrical secondary sliders 21. The lower ends of the two secondary sliders 21 are connected to the upper ends of their corresponding baffles 19. By setting the secondary sliders 21, since they are connected to the baffles 19, the two secondary sliders 21 move relative to each other when the baffles 19 move. The limit rod 20 restricts the degree of freedom of the secondary sliders 21, thus providing support for the other side of the two baffles 19, thereby assisting the movement of the two clamps.

[0026] Please see Figures 1-6In this embodiment, an inlet 22 is provided on the upper rear side of the barrier wall 1, and a sliding groove 23 is provided on the upper end of the barrier wall 1 above the inlet 22. A connecting plate 24 is installed on the lower front side of the barrier wall 1, and an outlet 25 is provided on the lower front side of the connecting plate 24. By setting the outlet 25, heavy metal wastewater can enter the installation tank 2 for purification with nano-zero valent iron. Then, the purified heavy metal wastewater is discharged through the outlet 25. A lifting frame 26 is installed on the upper end of the barrier wall 1 to the right of the sliding groove 23. A third motor 27 is installed on the upper end of the lifting frame 26. The output end of the third motor 27 passes through the upper end of the lifting frame 26 and is connected to a screw 28. The lower end of the screw 28 rotates inside the lower side of the lifting frame 26. The screw 28 is threadedly connected to a slide 29 on its outer surface. A gate 30 is installed at the left end of the slide 29 and is slidably connected to the sliding groove 23. A third motor 27 is installed so that the screw 28 rotates when it runs. When the screw 28 rotates, the rotation of the slide 29 is restricted by the lifting frame 26, thereby moving the slide 29. When the slide 29 moves, it moves the gate 30, thereby controlling the water intake. A limit frame 31 is installed on the upper front side of the barrier wall 1. A sealing door 32 is slidably connected inside the limit frame 31. By setting the sealing door 32, the staff can open the sealing door 32 to inspect or maintain the inside of the mounting groove 2, thereby facilitating the work of the staff.

[0027] During operation, the third motor 27 is first started by the external controller, which raises the gate 30 and opens the outlet 25 to allow heavy metal wastewater to flow into the barrier wall 1 and mix with the nano-zero ferric iron inside for purification. During this process, the first motor 5 and the electric push rod 3 are started by the external controller to perform three-dimensional stirring of the heavy metal wastewater and nano-zero ferric iron, thereby accelerating the purification speed. After purification is completed, the second motor 16 is started by the external controller, which, together with the limit rod 20 and the auxiliary slider 21, separates the two baffles 19 to open the channel, allowing water and nano-zero ferric iron to flow down. When the water flows through the ultrafiltration membrane 14, the ultrafiltration membrane 14 will retain the nano-zero ferric iron, allowing the water to flow down and finally be discharged from the outlet 25. When it is necessary to replace the ultrafiltration membrane 14 or to perform internal maintenance, the sealing door 32 can be removed to operate inside. The mounting bracket 13 is slidably installed through the slide groove 11 and the slide rail 12. The ultrafiltration membrane 14 can be replaced by pulling out the mounting bracket 13.

[0028] Through the above steps, by setting up the first motor 5, the rotational force generated by the first motor 5 drives the transmission shaft 6 to start operating. During the rotation of the transmission shaft 6, the linkage stirring rod 7 rotates synchronously, so that the heavy metal wastewater and nano-zero valent iron in the installation tank 2 are fully mixed under mechanical action, effectively improving the contact reaction efficiency of pollutants. At the same time, the electric push rod 3 generates a horizontal thrust to push the L-shaped plate 4 to move. The movement trajectory of the L-shaped plate 4 directly pulls the first motor 5 and the rigidly connected transmission shaft 6 and stirring rod 7 assembly to perform periodic lateral reciprocating motion. This composite motion mode causes the mixture to be superimposed with horizontal oscillation on the basis of rotational stirring, forming... A three-dimensional mixing effect is achieved. During the displacement of the L-shaped plate 4, the mounting frame 8 forms a rolling support structure with the L-shaped plate 4 through the roller 9. The rotational characteristics of the roller 9 are used to convert sliding friction into rolling friction, significantly reducing the frictional resistance between the contact surfaces and ensuring the efficient transmission of lateral oscillation action. This achieves the purpose of accelerating the purification speed and solves the problem that the existing modular nano-zero valent iron composite permeable reactive wall heavy metal pollution treatment device lacks a mixing and stirring function. Because it lacks a mixing and stirring function, it can only purify heavy metal wastewater and nano-zero valent iron through natural contact, resulting in slow purification speed and poor purification effect.

Claims

1. A modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device, comprising a barrier wall (1); characterized in that: It also includes an installation slot (2), an electric push rod (3), an L-shaped plate (4), a first motor (5), a drive shaft (6), a stirring rod (7), an installation frame (8), and a roller (9). The front end of the barrier wall (1) is provided with an installation slot (2). Four electric push rods (3) are arranged in an array on the upper left side of the barrier wall (1). The telescopic ends of the four electric push rods (3) are connected to the L-shaped plate (4). The upper rear side of the L-shaped plate (4) is equipped with a first motor (5). The output end of the first motor (5) passes through the left end of the L-shaped plate (4) and is connected to the drive shaft (6). The right end of the drive shaft (6) passes through the left end of the barrier wall (1). Several stirring rods (7) are installed on the right side of the outer surface of the drive shaft (6). The left end of the barrier wall (1) is located below the electric push rod (3) and an installation frame (8) is installed. Several rollers (9) are rotatably connected inside the installation frame (8). The outer surface of the rollers (9) is in contact with the lower end of the L-shaped plate (4).

2. The modular nano zero-valent iron composite permeable reactive wall heavy metal pollution treatment device according to claim 1, characterized in that: The upper sides of the left and right ends of the installation groove (2) are equipped with flow guide blocks (10). The front end of each flow guide block (10) is provided with a sliding groove (11). The interior of each sliding groove (11) is slidably connected with a slide rail (12). The two slide rails (12) are connected to an installation bracket (13). An ultrafiltration membrane (14) is installed inside the installation bracket (13).

3. The modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device according to claim 2, characterized in that: A sliding frame (15) is installed at the lower end of the mounting bracket (13). A second motor (16) is installed on the rear left side of the sliding frame (15). The output end of the second motor (16) passes through the left end of the sliding frame (15) and is connected to a double-acting screw (17). The right end of the double-acting screw (17) is rotatably connected to the inner right side of the sliding frame (15). The outer surface of the double-acting screw (17) is threaded with left and right symmetrical main sliders (18). A baffle (19) is installed at the lower end of both main sliders (18).

4. The modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device according to claim 3, characterized in that: A limiting rod (20) is installed on the front right side of the inner side of the sliding frame (15). The outer surface of the limiting rod (20) is slidably connected to two symmetrical auxiliary sliders (21). The lower ends of the two auxiliary sliders (21) are connected to the upper ends of their corresponding baffles (19).

5. The modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device according to claim 4, characterized in that: A water inlet (22) is provided on the upper rear end of the barrier wall (1), and a sliding groove (23) is provided on the upper end of the barrier wall (1) above the water inlet (22). A connecting plate (24) is installed on the lower front end of the barrier wall (1), and a water outlet (25) is provided on the lower front end of the connecting plate (24).

6. The modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device according to claim 5, characterized in that: A lifting frame (26) is installed on the upper end of the barrier wall (1) on the right side of the sliding groove (23). A third motor (27) is installed on the upper end of the lifting frame (26). The output end of the third motor (27) passes through the upper end of the lifting frame (26) and is connected to a screw (28). The lower end of the screw (28) is rotatably connected to the lower inner side of the lifting frame (26). A slide block (29) is threadedly connected to the outer surface of the screw (28). A gate (30) is installed on the left end of the slide block (29). The gate (30) is slidably connected to the sliding groove (23).

7. The modular nano zero-valent iron composite permeable reactive barrier heavy metal pollution treatment device according to claim 1, characterized in that: A limiting frame (31) is mounted on the front end upper side of the blocking wall (1), and a sealing door (32) is slidably connected inside the limiting frame (31).

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