Soil polycyclic aromatic hydrocarbon oxidation remediation treatment device

Abstract

The utility model discloses a kind of soil polycyclic aromatic hydrocarbon oxidation repair processing device, including feeding hopper, base, beam tube device, first motor and the driving shaft connected with first motor are installed on feeding hopper, the surface of driving shaft is fixedly connected with a plurality of helical arrangement feeding plate, base is rotatably installed with drum and the driving machine of drum transmission connection, the inner wall of drum is fixedly connected with a plurality of annular arrangement spiral blade, spraying pipe is rotatably installed at drum center place;The feeding plate inside feeding hopper can be rotated to transport soil to the inside of drum, soil conveying is dispersed by dispersing plate and agitating bar, can be finely divided into group of soil, it is beneficial to soil being fully repaired, drum rotation makes soil contact with oxidizing agent, water or liquid activator sprayed by spraying pipe contacts with soil in soil turning process, accelerates repair, spiral blade can automatically discharge repaired soil along with drum rotation, realize soil continuous repair.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation technology, specifically to a soil polycyclic aromatic hydrocarbon oxidation remediation treatment device. Background Technology

[0002] Chemical oxidation remediation technology primarily involves injecting chemical oxidants into the soil to react with pollutants, causing them to degrade or transform into less toxic products. This technology can treat most organic pollutants, including petroleum hydrocarbons, BTEX (benzene, toluene, ethylbenzene, xylene), phenols, MTBE (methyl tert-butyl ether), chlorinated organic solvents, polycyclic aromatic hydrocarbons, and pesticides, making it a broad-spectrum pollutant treatment method.

[0003] Among the relevant technologies, a solution for an integrated, high-efficiency, fully automatic contaminated soil remediation equipment (announcement number CN215279156U) was found. This solution has a comprehensive integrated screening and feeding system, a feeding system, a dosing system, a mixing and blending system, a discharge system, and a control system. It can automatically control the addition, transmission, mixing, and discharge process of contaminated soil, remediation materials, and agents, and precisely control the dosage of each component and the mixing process to ensure that the remediation agents, materials, and soil react fully.

[0004] However, in the above-mentioned schemes, the soil is first fed into a vibrating screen, and after screening, it is sent to a storage bin. But when the soil is wet or lumpy, it affects the vibrating screen's ability to screen the soil, and the vibrating screen cannot effectively break up the soil. The lumpy soil needs to be processed again, which affects the soil remediation efficiency. Some schemes use a conveyor belt to send the soil to a mixer. In this case, the lumpy soil relies entirely on the mixer, which requires a longer mixing time and is not conducive to rapid soil remediation. Utility Model Content

[0005] The purpose of this invention is to provide a soil polycyclic aromatic hydrocarbon oxidation remediation treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil polycyclic aromatic hydrocarbon oxidation remediation treatment device, comprising a feeding hopper, on which a first motor and a drive shaft connected to the first motor are installed, and a plurality of spirally arranged feeding plates are fixedly connected to the surface of the drive shaft. When the feeding plates rotate, they can push the soil to move, thereby realizing the transportation of the soil. The feeding plates can also disperse the soil into clumps, improve the contact efficiency of the oxidant, and ensure that the soil is fully remediated by the oxidant. The upper surface of the feeding hopper is provided with a reagent compartment, and a star-shaped unloader is installed at the lower end of the reagent compartment. The star-shaped unloader automatically delivers the oxidant to the feeding hopper. The base has a roller and a drive motor connected to the roller rotatably mounted on it. The roller receives soil conveyed by the feeding hopper. A safety plate is installed on the base. Several spiral blades arranged in a ring are fixedly connected to the inner wall of the roller. A spray pipe is rotatably mounted at the center of the roller. The spiral blades inside the roller are designed to enhance the soil turning effect. Combined with the rotation and spraying of the spray pipe, the oxidant and pollutants can fully react. The tube bundler is fixedly connected to the safety plate, and the spray pipe is snapped into the tube bundler, which can restrict the free rotation of the spray pipe and will not interfere with the drainage of soil.

[0007] Furthermore, a dispersing plate is fixedly connected to the side of the feeding plate, and an agitator is provided on the surface of the drive shaft. The dispersing plate and the agitator work together to enhance the soil clump breaking effect and improve the oxidant penetration efficiency.

[0008] Furthermore, a number of dispersing blades are fixedly connected to the inner wall of the drum. The dispersing blades are located between the spiral blades and are staggered with the spiral blades, so that when the soil is conveyed by the spiral blades in the drum, the soil clumps can be broken up as much as possible.

[0009] Furthermore, the left and right ends of the roller are connected to a feed cone and a discharge cone, and a bar screen is provided above the feed hopper. A collection hopper is provided on the bottom surface of the bar screen. The bar screen can separate the gravel in the soil and reduce impurities in the soil.

[0010] Furthermore, four rollers are installed on the base, and the roller surface is connected to a limiting ring that is in rolling connection with the roller, so as to realize the dynamic and stable rotation of the roller and prevent the roller from deviating.

[0011] Furthermore, the drive unit includes a second motor and a gear ring. The gear ring is fitted onto the surface of the drum. The second motor is connected to the gear ring via gear transmission, resulting in high torque transmission efficiency and adaptability to the long-term, high-frequency start-stop conditions of the drum.

[0012] Furthermore, the tube bundle includes a rectangular rod and a sliding sleeve fitted on the surface of the rectangular rod. A handle bolt is screwed onto the sliding sleeve to abut against the rectangular rod. A retaining plate is fixedly connected to the sliding sleeve. The retaining plate prevents the spray pipe from rotating, ensuring that it will not rotate downwards, and making the connection with the pipeline that delivers the oxidant more stable.

[0013] Furthermore, the inner wall of the drum is connected to a bearing seat, and the spray pipe is inserted into the bearing seat to ensure that the spray pipe does not affect the rotation of the drum.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) The rotating feed plate inside the feed hopper can transport the soil into the drum. The soil is dispersed by the dispersing plate and the stirring bar, which can break up the soil clumps, which is conducive to the full restoration of the soil and improves the stability of continuous soil restoration.

[0015] (2) The rotation of the drum allows the soil to come into contact with the oxidant. The large internal space of the drum allows the soil to be fully turned over. During the soil turning process, the water or liquid activator sprayed from the spray pipe comes into full contact with the soil, which can accelerate the repair of the soil by the oxidant. The spiral blades can automatically discharge the repaired soil as the drum rotates, thus achieving continuous soil repair.

[0016] (3) The dispersing blades set on the inner wall of the roller have a cutting effect on the clumps of soil. The oxidant softens the clumps of soil, effectively reducing the clumps of soil, increasing the contact area between the oxidant and the soil, and preventing uneven repair.

[0017] (4) The bar screen can separate and process particulate impurities such as gravel in the soil, avoiding the mixing of oxidant and impurities. The impurities are discharged from the bar screen and will not affect the subsequent processing of the soil, thus making more efficient use of oxidant. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire utility model; Figure 2 This is a schematic diagram of the connection between the roller and the toothed ring of this utility model; Figure 3 This is a schematic diagram of the connection between the drum and the spiral blades of this utility model; Figure 4 This is a schematic diagram showing the connection between the drive shaft and the feed plate of this utility model.

[0019] In the diagram: 1. Feed hopper; 2. First motor; 3. Base; 4. Feed cone; 5. Drum; 6. Safety plate; 7. Reinforcing rod; 8. Second motor; 9. Rectangular rod; 10. Sliding sleeve; 11. Slotted plate; 12. Roller; 13. Discharge cone; 14. Bar screen; 15. Concentrating hopper; 16. Toothed ring; 17. Limiting ring; 18. Spray pipe; 19. Drive shaft; 20. Feeding plate; 21. Dispersing plate; 22. Agitator bar; 23. Dispersing knife; 24. Handle bolt; 25. Spiral blade; 26. Chemical tank; 27. Rotary rotary valve; 28. Valve; 29. ​​Bearing seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Please see Figure 1-4 This utility model provides a technical solution: a soil polycyclic aromatic hydrocarbon oxidation remediation treatment device, including a feeding hopper 1, on which a first motor 2 and a drive shaft 19 connected to the first motor 2 are installed. Several spirally arranged feeding plates 20 are fixedly connected to the surface of the drive shaft 19. The first motor 2 drives the feeding plates 20 to rotate through the drive shaft 19. The rotation of the feeding plates 20 can discharge soil from the feeding hopper 1, realizing automatic feeding of the drum 5. The feeding hopper 1 is open, which facilitates the bar screen 14 to transport soil to the feeding hopper 1. The upper surface of the feeding hopper 1 is provided with a reagent bin 26, and a star-shaped unloader 27 is installed at the lower end of the reagent bin 26. The reagent bin 26 stores oxidant to realize continuous feeding of oxidant. The base 3 has a roller 5 and a drive motor that is rotatably connected to the roller 5. The roller 5 receives the soil conveyed by the feeding hopper 1. The base 3 has a safety plate 6 installed on it. A reinforcing rod 7 is connected between the safety plate 6 and the base 3 to ensure the stability of the connection of the safety plate 6. The inner wall of the roller 5 is fixedly connected with several annularly arranged spiral blades 25. A spray pipe 18 is rotatably installed at the center of the roller 5. The spray pipe 18 is equipped with a valve 28 to adjust the flow rate. The spiral blades 25 rotate with the roller 5, and the rotation of the spiral blades 25 plays a guiding role in the soil. The soil can move to the right in the roller 5, and the repaired soil is automatically discharged. The spray pipe 18 does not affect the rotation of the roller 5. The spray pipe 18 can be inserted into the inside of the roller 5 to spray water or liquid activator on the soil. Water or liquid activator can accelerate the contact efficiency between oxidant and pollutants, and realize the degradation of pollutants in the soil. Common oxidants include hydrogen peroxide, permanganate, Fenton reagent, Fenton-like reagent and activated persulfate, etc. The tube bundler is fixedly connected to the safety plate 6. The spray pipe 18 is snapped into the tube bundler. The spray pipe 18 will not rotate. The connection between the pipeline for conveying oxidant and the spray pipe 18 makes the connection more stable and prevents rotation.

[0022] In this embodiment, as Figure 4As shown, a dispersing plate 21 is fixedly connected to the side of the feeding plate 20, and an agitator 22 is provided on the surface of the drive shaft 19. The dispersing plate 21 can apply shearing force to the soil clumps by rotating, thus dispersing the soil. The agitator 22 agitates the soil, making the soft soil clumps more fragmented, which is conducive to the oxidant being fully mixed with the soil.

[0023] In this embodiment, as Figure 3 As shown, a number of dispersing blades 23 are fixedly connected to the inner wall of the roller 5. The dispersing blades 23 are located between the spiral blades 25. When the soil flows along the spiral blades 25, the clumps of soil are cut by the dispersing blades 23, and the soil is fully purified by the oxidant.

[0024] In this embodiment, as Figure 1 As shown, the left and right ends of the roller 5 are connected to the feed cone 4 and the discharge cone 13. The feed hopper 1 is provided with a bar screen 14 above it. The bottom surface of the bar screen 14 is provided with a collection hopper 15. The bar screen 14 can screen out impurities such as gravel in the soil. The screened soil falls into the feed hopper 1, and the feed hopper 1 sends the screened soil into the roller 5.

[0025] In this embodiment, as Figure 2 As shown, four rollers 12 are installed on the base 3. The surface of the roller 5 is connected to a limiting ring 17 that is in rolling connection with the rollers 12, so as to realize the rotational installation of the roller 5 and the base 3. The limiting ring 17 can prevent the roller 5 from moving left and right and prevent the roller 5 from falling off the base 3.

[0026] In this embodiment, as Figure 2 As shown, the drive motor includes a second motor 8 and a gear ring 16. The gear ring 16 is fitted on the surface of the drum 5. The second motor 8 is connected to the gear ring 16 through gear transmission. The safety plate 6 covers the gear ring 16 to ensure the safe operation of the drum 5.

[0027] In this embodiment, as Figure 1 As shown, the tube bundler includes a rectangular rod 9 and a sliding sleeve 10 sleeved on the surface of the rectangular rod 9. A handle bolt 24 is screwed onto the sliding sleeve 10 to abut against the rectangular rod 9. A slot plate 11 is fixedly connected to the sliding sleeve 10. After loosening the handle bolt 24, the position of the slot plate 11 can be slidably adjusted, which can contact and limit the spray pipe 18.

[0028] In this embodiment, as Figure 3 As shown, the inner wall of the roller 5 is connected to the bearing seat 29, and the spray pipe 18 is inserted into the bearing seat 29. The roller 5 drives the bearing seat 29 to rotate on the spray pipe 18, ensuring that the spray pipe 18 will not interfere with the rotation of the roller 5.

[0029] Specifically, when using it, a soil disperser can be used to simply disperse the soil, and then a conveyor belt can be used to send the soil into the bar screen 14. The bar screen 14 separates the stones, branches and other impurities in the soil and discharges them from the collection hopper 15. Another conveyor belt can be used to transport the impurities out. The screened soil falls into the feeding hopper 1. The oxidant is placed in the reagent bin 26. The rotation of the star-shaped unloader 27 can send the oxidant into the feeding hopper 1. The first motor 2 drives the feeding plate 20, the dispersing plate 21, and the stirring bar 22 to rotate through the drive shaft 19. The feeding plate 20 pushes the soil from the feeding hopper 1 to the inside of the drum 5. The dispersing plate 21 and the stirring bar 22 have a cutting effect on the clumps of soil, which can make the soil more fine. Water or liquid activator is sent to the spray pipe 18 through the water pump. The spray pipe 18 sprays water or liquid activator into the drum 5. Turning the valve 28 to adjust the flow rate can make the oxidant and the soil fully contact. The second motor 8 drives the gear ring 16 and the drum 5 to rotate through the gear. The soil is turned in the drum 5 and fully contacted with the oxidant. The spiral blades 25 and the dispersing blades 23 rotate together with the drum 5. The spiral blades 25 can guide the soil to flow to the right, and the dispersing blades 23 further disperse the soil to achieve comprehensive soil remediation. If the oxidant used is liquid (it can be sprayed using the spray pipe 18), the soil discharged from the discharge cone 13 is treated by a mud-water separator to recover the liquid oxidant.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil polycyclic aromatic hydrocarbon (PAH) oxidation remediation treatment device, characterized in that, include: Feeding hopper (1), a first motor (2) and a drive shaft (19) connected to the first motor (2) are installed on the feeding hopper (1), a number of spirally arranged feeding plates (20) are fixedly connected to the surface of the drive shaft (19), a medicine bin (26) is provided on the upper surface of the feeding hopper (1), and a star-shaped unloader (27) is installed at the lower end of the medicine bin (26). A base (3) is rotatably mounted on the base (3) with a roller (5) and a drive motor connected to the roller (5) in a transmission. The roller (5) receives the soil conveyed by the feeding hopper (1). A safety plate (6) is mounted on the base (3). Several spiral blades (25) arranged in a ring are fixedly connected to the inner wall of the roller (5). A spray pipe (18) is rotatably mounted at the center of the roller (5). The spray pipe (18) is equipped with a valve (28). The tube bundler is fixedly connected to the safety plate (6), and the spray pipe (18) is snapped into the tube bundler.

2. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: The feeding plate (20) is fixedly connected to a dispersing plate (21) on its side, and the surface of the drive shaft (19) is provided with a stirring bar (22).

3. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: A number of dispersing blades (23) are fixedly connected to the inner wall of the roller (5), and the dispersing blades (23) are located between the spiral blades (25).

4. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: The roller (5) is connected to the feed cone (4) and the discharge cone (13) at its left and right ends. A bar screen (14) is provided above the feed hopper (1), and a collection hopper (15) is provided on the bottom surface of the bar screen (14).

5. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: Four rollers (12) are installed on the base (3), and a limiting ring (17) is connected to the surface of the roller (5) and is in rolling connection with the roller (12).

6. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: The drive unit includes a second motor (8) and a gear ring (16). The gear ring (16) is fitted on the surface of the roller (5). The second motor (8) is connected to the gear ring (16) via gear transmission.

7. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: The tube bundle includes a rectangular rod (9) and a sliding sleeve (10) fitted on the surface of the rectangular rod (9). A handle bolt (24) that abuts against the rectangular rod (9) is screwed onto the sliding sleeve (10). A slot plate (11) is fixedly connected to the sliding sleeve (10).

8. The soil polycyclic aromatic hydrocarbon oxidation remediation device according to claim 1, characterized in that: The inner wall of the roller (5) is connected to the bearing seat (29), and the spray pipe (18) is inserted into the bearing seat (29).

Images