Landfill leachate Fenton oxidation device

Abstract

The utility model discloses a landfill leachate Fenton oxidation device, which belongs to the technical field of landfill leachate treatment, and adopts the technical scheme that the landfill leachate Fenton oxidation device comprises a base, the top of the base is fixedly connected with a reaction tank, a mixing component is arranged in the reaction tank, and the left side of the top of the base is fixedly connected with a pretreatment pool; by arranging the mixing assembly, the mixing assembly can stir the landfill leachate in the reaction tank from different positions and angles, compared with a single-rotating-rod stirring structure, the double-rotating-rod stirring structure can generate a more complex flow field, the stirring dead zone is effectively reduced, a medicament is in full contact with various components in the leachate, and the stirring efficiency is improved. The Fenton oxidation reaction device has the advantages that the Fenton oxidation reaction device is arranged, comprehensive and efficient proceeding of the Fenton oxidation reaction is facilitated, the filtering assembly is arranged, solid impurity particles in the landfill leachate can be filtered twice through the filtering assembly, it is guaranteed that the leachate entering the reaction tank is purer, the influence of impurities on the follow-up Fenton oxidation reaction is effectively reduced, and therefore the reaction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate treatment technology, and in particular to a landfill leachate Fenton oxidation device. Background Technology

[0002] Landfill leachate is a high-concentration organic wastewater formed in the pores of landfills during the dumping, landfilling, or storage of landfills due to the seepage of moisture from the landfill itself and the infiltration of external precipitation. It contains a large amount of dissolved organic matter, heavy metal ions, ammonia nitrogen, and various microorganisms. The Fenton oxidation process can change the chemical structure of the organic matter in landfill leachate, transforming it from a form that is difficult to biodegrade into a form that is easily utilized by microorganisms.

[0003] The existing Fenton oxidation equipment for landfill leachate has an inadequate internal stirring structure design, which cannot ensure that the reagents and landfill leachate are mixed quickly and evenly in the reaction tank, thus limiting the reaction rate and effect. In addition, landfill leachate contains a large number of solid impurity particles, which may affect the stirring effect and reduce the reaction efficiency.

[0004] To address this, a Fenton oxidation device for landfill leachate is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a Fenton oxidation device for landfill leachate, which can solve the problems of the existing landfill leachate Fenton oxidation device, where the internal stirring structure design is not reasonable enough, and it cannot ensure that the reagent and landfill leachate are mixed quickly and evenly in the reaction tank, thus limiting the reaction rate and effect. In addition, landfill leachate contains a large number of solid impurity particles, which may affect the stirring effect and reduce the reaction efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a landfill leachate Fenton oxidation device, comprising a base, a reaction tank fixedly connected to the top of the base, a mixing component disposed inside the reaction tank, a pretreatment tank fixedly connected to the left side of the top of the base, a filtration component disposed inside the pretreatment tank, and the filtration component comprising an installation frame.

[0007] The mixing assembly includes two rotating rods arranged symmetrically. The rotating rods are rotatably connected to the inside of the reaction vessel, and their top ends extend to the outside of the reaction vessel. A stirring rod is fixedly connected to the surface of the rotating rod. The stirring rod is multiple and evenly distributed. A driven gear is fixedly connected to the top of the rotating rod surface, and a driving gear meshes between the opposite sides of the two driven gears. A drive motor is fixedly connected to the top of the driving gear.

[0008] Preferably, the mounting frame has a first filter frame and a second filter frame movably connected inside, with the first filter frame located on top of the second filter frame and the first filter frame and the second filter frame fitting together.

[0009] Preferably, a first filter screen and a second filter screen are fixedly connected inside the first filter frame and the second filter frame, respectively, and the mesh count of the first filter screen is smaller than that of the second filter screen.

[0010] Preferably, limit grooves are provided on both sides of the inner wall of the mounting frame, and limit blocks are fixedly connected to both sides of the first filter frame and the second filter frame, with the limit blocks slidably connected inside the limit grooves.

[0011] Preferably, the pretreatment pool has movable square holes on both sides, with a sliding rod fixedly connected inside the left movable square hole and a screw rotatably connected inside the right movable square hole.

[0012] Preferably, the slide bar has a guide block slidably connected to its surface, and the screw has a moving block threadedly connected to its surface. The guide block and the moving block are respectively fixedly connected to both sides of the mounting frame.

[0013] Preferably, a guide plate is fixedly connected to the top inside the mounting frame, the guide plate is located at the top of the first filter frame and the inside of the guide plate is inclined.

[0014] Preferably, a delivery pump is fixedly connected to the right side of the pretreatment tank, and the suction end and discharge end of the delivery pump are fixedly connected to the pretreatment tank and the reaction tank, respectively.

[0015] Preferably, a protective shell is fixedly connected to the top of the reaction vessel, the drive motor is fixedly connected to the top of the protective shell, and the rotating rod rotates with the protective shell on the side close to the protective shell. Both the driving gear and the driven gear are located inside the protective shell.

[0016] Preferably, a liquid outlet pipe is fixedly connected to the right side of the surface of the reaction vessel.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application sets up a mixing component, which can agitate the landfill leachate in the reaction tank from different positions and angles. Compared with a single-rotor stirring structure, a double-rotor can generate a more complex flow field, effectively reduce the stirring dead zone, and allow the reagents and various components in the leachate to fully contact each other, which is conducive to the comprehensive and efficient Fenton oxidation reaction.

[0019] 2. This application incorporates a filtration component that can filter solid impurity particles in landfill leachate twice, ensuring that the leachate entering the reaction tank is purer and effectively reducing the impact of impurities on the subsequent Fenton oxidation reaction, thereby improving reaction efficiency. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the landfill leachate Fenton oxidation device of this utility model;

[0021] Figure 2 This utility model Figure 1 Top view;

[0022] Figure 3 This is a cross-sectional view of the structure of the hybrid component of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the pretreatment tank of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the filter assembly of this utility model.

[0025] In the diagram, 1. Base; 2. Reaction vessel; 3. Mixing assembly; 301. Rotating rod; 302. Stirring rod; 303. Driven gear; 304. Driving gear; 305. Drive motor; 4. Pretreatment tank; 5. Filtration assembly; 501. Mounting frame; 502. First filtration frame; 503. Second filtration frame; 504. First filter screen; 505. Second filter screen; 6. Limiting groove; 7. Limiting block; 8. Moving square hole; 9. Slide rod; 10. Screw; 11. Guide block; 12. Moving block; 13. Guide plate; 14. Transfer pump; 15. Protective shell; 16. Liquid outlet pipe. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A landfill leachate Fenton oxidation device includes a base 1, a reaction tank 2 fixedly connected to the top of the base 1, a mixing component 3 disposed inside the reaction tank 2, a pretreatment tank 4 fixedly connected to the left side of the top of the base 1, a filtration component 5 disposed inside the pretreatment tank 4, and the filtration component 5 including a mounting frame 501.

[0029] The mixing component 3 includes two rotating rods 301 arranged symmetrically. The rotating rods 301 are rotatably connected to the inside of the reaction vessel 2, and the top of the rotating rods 301 extends to the outside of the reaction vessel 2. Stirring rods 302 are fixedly connected to the surface of the rotating rods 301. Multiple stirring rods 302 are evenly distributed. A driven gear 303 is fixedly connected to the top of the surface of the rotating rod 301, and a driving gear 304 meshes between the opposite sides of the two driven gears 303. A drive motor 305 is fixedly connected to the top of the driving gear 304.

[0030] In this embodiment: by setting the mixing component 3, the drive motor 305 can drive the active gear 304 to rotate. When the active gear 304 rotates, it will drive two driven gears 303 to rotate. The driven gears 303 can mesh with the active gear 304. When the driven gears 303 rotate, they will drive the rotating rod 301 and the stirring rod 302 to rotate synchronously. During the rotation, the stirring rod 302 will turn the leachate at the bottom upward and push the leachate on the surface downward to form a circulating flow. This will make the leachate form a three-dimensional mixing flow field in the reaction tank 2, so that the various components can be evenly distributed and avoid the formation of mixing dead zones at the bottom or top of the leachate, thereby improving the reaction efficiency.

[0031] Specifically, such as Figure 4 , Figure 5 As shown, the first filter frame 502 and the second filter frame 503 are movably connected inside the mounting frame 501. The first filter frame 502 is located on top of the second filter frame 503 and the first filter frame 502 and the second filter frame 503 are in close contact with each other.

[0032] Specifically, such as Figure 5 As shown, a first filter screen 504 and a second filter screen 505 are fixedly connected inside the first filter frame 502 and the second filter frame 503, respectively. The mesh number of the first filter screen 504 is smaller than that of the second filter screen 505.

[0033] Specifically, such as Figure 5 As shown, limit grooves 6 are provided on both sides of the inner wall of the mounting frame 501, and limit blocks 7 are fixedly connected to both sides of the first filter frame 502 and the second filter frame 503. The limit blocks 7 are slidably connected inside the limit grooves 6.

[0034] In this embodiment: With the above settings, when the leachate enters the pretreatment tank 4, it first contacts the first filter frame 502. Larger particles of impurities are intercepted by the first filter screen 504 inside the first filter frame 502. After preliminary filtration by the first filter screen 504, the leachate continues to flow downward and enters the second filter frame 503. The second filter screen 505 can further filter out smaller impurity particles, thereby effectively improving the filtration accuracy and reducing the impurity content entering the reaction tank 2. The cooperation of the limiting groove 6 and the limiting block 7 can prevent the first filter frame 502 and the second filter frame 503 from shifting during the filtration process, ensuring that the leachate can accurately pass through the two filter frames in sequence for filtration. At the same time, it facilitates the subsequent installation and removal of the first filter frame 502 and the second filter frame 503, improving the ease of use.

[0035] Specifically, such as Figure 1 , Figure 4 As shown, movable square holes 8 are provided on both sides of the pretreatment pool 4. A sliding rod 9 is fixedly connected inside the movable square hole 8 on the left side, and a screw 10 is rotatably connected inside the movable square hole 8 on the right side.

[0036] Specifically, such as Figure 4 As shown, a guide block 11 is slidably connected to the surface of the slide rod 9, and a moving block 12 is threadedly connected to the surface of the screw rod 10. The guide block 11 and the moving block 12 are respectively fixedly connected to both sides of the mounting frame 501.

[0037] In this embodiment: With the above settings, rotating the screw 10 can drive the moving block 12 to move upward. When the moving block 12 moves, it will drive the mounting frame 501 to move together, so that the mounting frame 501 can be moved out of the pretreatment tank 4, thereby facilitating the cleaning of solid impurities inside the first filter frame 502 and the second filter frame 503, and improving the convenience of maintenance.

[0038] Specifically, such as Figure 4 As shown, a guide plate 13 is fixedly connected to the top of the inside of the mounting frame 501. The guide plate 13 is located on the top of the first filter frame 502 and the inside of the guide plate 13 is inclined.

[0039] Specifically, such as Figure 2 As shown, a transfer pump 14 is fixedly connected to the right side of the pretreatment tank 4. The suction end and the discharge end of the transfer pump 14 are fixedly connected to the pretreatment tank 4 and the reaction tank 2, respectively.

[0040] Specifically, such as Figure 3 As shown, a protective shell 15 is fixedly connected to the top of the reaction vessel 2, and a drive motor 305 is fixedly connected to the top of the protective shell 15. The rotating rod 301 rotates with the protective shell 15 on the side close to the protective shell 15. The driving gear 304 and the driven gear 303 are both located inside the protective shell 15.

[0041] Specifically, such as Figure 1 As shown, a liquid outlet pipe 16 is fixedly connected to the right side of the surface of the reaction vessel 2.

[0042] In this embodiment: By setting a guide plate 13, the leachate entering the pretreatment tank 4 can be evenly distributed, avoiding premature blockage in the area due to excessive local flow. By setting a transfer pump 14, the leachate filtered by the pretreatment tank 4 can be smoothly transported to the reaction tank 2 for subsequent Fenton oxidation treatment, ensuring the continuity of the entire process. It is a key device connecting the pretreatment and reaction stages. By setting a protective shell 15, the protective shell 15 provides effective protection for key moving and power transmission components such as the drive motor 305, the drive gear 304, and the driven gear 303, preventing external factors from affecting the normal use of the mixing component 3. By setting an outlet pipe 16, the treated leachate can flow out of the reaction tank 2 through the outlet pipe 16, facilitating further processing.

[0043] Working principle: When performing liquid Fenton oxidation treatment on landfill leachate, the leachate is first introduced into the pretreatment tank 4. Then, the leachate comes into contact with the first filter frame 502. Larger particles are intercepted by the first filter screen 504 in the first filter frame 502. After preliminary filtration by the first filter screen 504, the leachate continues to flow downwards and enters the second filter frame 503. The second filter screen 505 can further filter out smaller particles. Then, the transfer pump 14 introduces the leachate after secondary filtration into the interior of the reaction tank 2. The drive motor 305 is started, which drives the drive gear 304 to rotate. When the drive gear 304 rotates, it drives the driven gear 303 and the two rotating rods 301 to rotate synchronously. Then, multiple agitators evenly distributed on the surface of the rotating rods 301... Rod 302 will perform a circular motion, thoroughly stirring and mixing the incoming leachate and the subsequently added Fenton oxidation agent in the reaction tank 2. This ensures that the leachate and agent are fully contacted and mixed at all points within the reaction tank 2, thereby promoting the efficient Fenton oxidation reaction. When it is necessary to clean the solid impurities inside the first filter frame 502 and the second filter frame 503, the screw 10 is rotated. Rotating the screw 10 will drive the moving block 12 to move upward. When the moving block 12 moves, it will drive the mounting frame 501 to move together. Then, the mounting frame 501 is moved out of the pretreatment tank 4, and the first filter frame 502 and the second filter frame 503 can be removed from the inside of the mounting frame 501, thus allowing for maintenance of the first filter frame 502 and the second filter frame 503.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A landfill leachate Fenton oxidation device comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with a reaction tank (2), the inside of the reaction tank (2) is provided with a mixing assembly (3), the left side of the top of the base (1) is fixedly connected with a pretreatment pool (4), the inside of the pretreatment pool (4) is provided with a filtering assembly (5), the filtering assembly (5) comprises an installation frame (501); The mixing assembly (3) comprises rotating rods (301), the number of the rotating rods (301) is two and the two rotating rods (301) are symmetrically arranged, the rotating rods (301) are rotatably connected in the inside of the reaction tank (2) and the top ends of the rotating rods (301) extend to the outside of the reaction tank (2), the surface of the rotating rod (301) is fixedly connected with stirring rods (302), the number of the stirring rods (302) is multiple and is uniformly distributed, the top of the surface of the rotating rod (301) is fixedly connected with driven gears (303), and the opposite sides of the two driven gears (303) are meshingly connected with a driving gear (304), the top of the driving gear (304) is fixedly connected with a driving motor (305).

2. The landfill leachate Fenton oxidation device according to claim 1, characterized in that: The inside of the installation frame (501) is movably connected with a first filtering frame (502) and a second filtering frame (503), the first filtering frame (502) is located at the top of the second filtering frame (503) and the first filtering frame (502) and the second filtering frame (503) are mutually attached.

3. The landfill leachate Fenton oxidation device according to claim 2, characterized in that: The inside of the first filtering frame (502) and the second filtering frame (503) is fixedly connected with a first filter screen (504) and a second filter screen (505), the mesh number of the first filter screen (504) is smaller than that of the second filter screen (505).

4. The landfill leachate Fenton oxidation device according to claim 2, characterized in that: The two sides of the inner wall of the installation frame (501) are provided with limiting grooves (6), the two sides of the first filtering frame (502) and the second filtering frame (503) are fixedly connected with limiting blocks (7), and the limiting blocks (7) are slidably connected in the limiting grooves (6).

5. The landfill leachate Fenton oxidation device according to claim 2, characterized in that: The two sides of the pretreatment pool (4) are provided with movable square holes (8), the inside of the left movable square hole (8) is fixedly connected with a sliding rod (9), and the inside of the right movable square hole (8) is rotatably connected with a screw rod (10).

6. The landfill leachate Fenton oxidation device according to claim 5, characterized in that: The surface of the sliding rod (9) is slidably connected with a guide block (11), the surface of the screw rod (10) is threadedly connected with a moving block (12), and the guide block (11) and the moving block (12) are fixedly connected on the two sides of the installation frame (501).

7. The landfill leachate Fenton oxidation device according to claim 2, characterized in that: The top of the inside of the installation frame (501) is fixedly connected with a guide plate (13), the guide plate (13) is located at the top of the first filtering frame (502) and the inside of the guide plate (13) is inclinedly arranged.

8. The landfill leachate Fenton oxidation device according to claim 1, characterized in that: The right side of the pretreatment pool (4) is fixedly connected with a conveying pump (14), and the water suction end and the water outlet end of the conveying pump (14) are fixedly communicated with the pretreatment pool (4) and the reaction tank (2) respectively.

9. The landfill leachate Fenton oxidation device according to claim 1, characterized in that: The top of the reaction tank (2) is fixedly connected with a protective shell (15), the driving motor (305) is fixedly connected at the top of the protective shell (15), and the rotating rod (301) is rotatable relative to the protective shell (15) on one side close to the protective shell (15), and the driving gear (304) and the driven gear (303) are arranged in the interior of the protective shell (15).

10. The landfill leachate Fenton oxidation device according to claim 1, characterized in that: The right side of the surface of the reaction tank (2) is fixedly connected with a liquid outlet pipe (16).

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