Activated carbon adsorption treatment device for leachate of garbage transfer station

Abstract

The utility model discloses a garbage transfer station percolate activated carbon adsorption treatment device, relates to the technical field of sewage treatment, and aims to solve the technical problem of low adsorption efficiency caused by non-uniform percolate water distribution and insufficient contact time. The garbage transfer station percolate activated carbon adsorption treatment device comprises a base, a frame is arranged at one end of the upper surface of the base, and a round opening is formed in the middle of the upper end of the frame; a round opening is formed in one end of the upper surface of the base, a barrel is arranged in the round opening, an adsorption mechanism is arranged in the barrel, a vibration mechanism is arranged outside the barrel, and a conveying mechanism is arranged at the other end of the upper surface of the base. The multi-stage spiral separation blades are adopted to divide the activated carbon bed layer into independent adsorption units, the spiral flow channels guide percolate to spirally flow, the retention time of the percolate in the bed layer is prolonged, the contact area of the percolate and the activated carbon is increased, the water flow velocity gradient is reduced, the percolate is pushed to be uniformly distributed, and the utilization rate of an adsorption material is improved; meanwhile, filter cake layer formation is delayed, the adsorption period is prolonged, and the activated carbon replacement frequency is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to an activated carbon adsorption treatment device for leachate from a waste transfer station. Background Technology

[0002] As a key node in the urban waste collection system, waste transfer stations are responsible for waste compression, temporary storage, and transfer. During waste treatment, due to biodegradation, mechanical compression, and rainwater infiltration, a high-concentration organic wastewater—leachate—is generated. This wastewater contains large amounts of organic matter, ammonia nitrogen, heavy metals, and pathogenic microorganisms. If discharged directly without effective treatment, it will cause serious pollution to soil, surface water, and groundwater, while also emitting foul odors that affect the surrounding environment.

[0003] Currently, activated carbon adsorption devices are used in waste transfer stations to treat leachate. These devices utilize activated carbon to adsorb and filter impurities in the leachate. However, the water distribution system of these devices is simple in design, making it difficult to distribute the leachate evenly after it enters the device, and the high water velocity shortens the contact time between the leachate and the activated carbon, thus affecting the adsorption efficiency for large organic molecules and heavy metal ions. Therefore, we propose an activated carbon adsorption treatment device for leachate from waste transfer stations. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide an activated carbon adsorption treatment device for leachate from a waste transfer station, so as to solve the technical problems of uneven water distribution and insufficient contact time in leachate leading to low adsorption efficiency.

[0005] To solve the above technical problems, this utility model provides the following technical solution: an activated carbon adsorption treatment device for leachate from a waste transfer station, comprising a base, a frame arranged at one end of the upper surface of the base, a circular opening in the middle of the upper end of the frame, a barrel arranged inside the circular opening, an adsorption mechanism arranged inside the barrel, a vibration mechanism arranged outside the barrel, and a conveying mechanism arranged at the other end of the upper surface of the base, and the conveying mechanism is connected to the barrel.

[0006] The adsorption mechanism includes a separating blade, which has a multi-level spiral structure. An activated carbon bed is arranged inside the separating blade. A mesh A is arranged above the separating blade. A placement rack is arranged on the mesh A. A quartz sand pad is arranged on the placement rack. A mesh B is arranged below the separating blade.

[0007] The conveying mechanism includes a housing, inside which a rotary joint is arranged. The output end of the rotary joint is connected to a diverter pipe, and two sets of nozzles are arranged symmetrically and oppositely on the lower surface of the diverter pipe.

[0008] Preferably, the barrel body adopts a multi-stage variable diameter structure, and the whole body gradually tapers from top to bottom. An overlap A is arranged on the upper end of the inner side of the barrel body, and a mesh A is placed on the overlap A. An overlap B is arranged on the lower end of the inner side of the barrel body, and a mesh B is placed on the overlap B. A top cover is rotatably installed on the upper end of the outer side of the barrel body, and an outer shell is installed through the middle of the top cover. A collection hopper is arranged on the lower end of the outer side of the barrel body, and a pipe A is connected to the lower end of the collection hopper.

[0009] Preferably, the vibration mechanism includes a vibration motor, a base plate, spring A, and spring B. The vibration motor is fixed on both sides of the middle of the outside of the barrel, the base plate is fixed on the lower side of the outside of the barrel, the base plate is connected to the base through spring A, and the upper side of the outside of the barrel is connected to the frame through spring B.

[0010] Preferably, the conveying mechanism further includes a pump body, the input end of which is connected to a pipe B, the output end of which is connected to a pipe C, and one end of the pipe C is connected to the input end of a rotary joint.

[0011] Preferably, the placement rack has an overall spiral ring structure, and the inner side of the placement rack adopts a triangular structure design.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the design of a partition blade structure, which is a multi-stage spiral structure, can divide the activated carbon bed into multiple independent adsorption units. The spiral flow channel design promotes the formation of a spiral flow path for the leachate, prolonging its residence time in the activated carbon bed and increasing the contact area between the liquid and the adsorbent material. This structural design can effectively reduce the water flow velocity gradient, reduce the phenomenon of insufficient adsorption caused by excessive local flow velocity, and through the guiding effect of the blades, make the leachate evenly distributed throughout the activated carbon bed, improving the utilization rate of the adsorbent material. In addition, the spiral partition structure helps to maintain a moderate turbulent state of activated carbon particles, delaying the formation of filter cake layer, thereby extending the adsorption cycle and reducing the frequency of activated carbon replacement.

[0014] 2. The spiral ring structure of the placement rack in this utility model is designed to allow the quartz sand pad to be stacked in a conical shape on the partition A. This reduces the amplitude of the quartz sand pad being sprayed when the nozzle sprays leachate onto its surface, preventing the nozzle from directly washing away and piling up part of the quartz sand pad, making it difficult to evenly place the quartz sand pad on the partition A. This would make it difficult to evenly separate the impurities in the leachate in the later stages. The triangular structure of the inner edge is designed to allow the leachate that has seeped into the quartz sand pad to flow inward along the inner edge and make full contact with the quartz sand pad. This prevents the leachate that has entered the quartz sand pad from flowing directly down the edge, which would reduce the efficiency of the initial impurity separation of the leachate.

[0015] 3. By designing the diversion pipe and nozzle structure, two sets of nozzles are symmetrically arranged on the lower surface of the diversion pipe, in a 180° symmetrical opposite arrangement. When the leachate passes through the diversion pipe, it is sprayed in opposite directions through the nozzles to form a rotational torque, driving the diversion pipe to rotate slowly. This dynamic water distribution method can achieve uniform water distribution in the quartz sand cushion layer, expand the contact area between the leachate and the quartz sand cushion layer, and improve the interception efficiency of large suspended particles. The nozzle angle design can adjust the water flow spray direction. Combined with the rotational movement of the diversion pipe, it effectively improves the problem of insufficient flow in the edge area of ​​the traditional water distribution system, making the filtration effect in the pretreatment stage more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main appearance structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention from the front view.

[0018] Figure 3 This is a schematic diagram of the adsorption structure of this utility model, which is filled with an activated carbon bed and a quartz sand pad.

[0019] Figure 4 This is a schematic diagram of the conveying mechanism structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0021] Figure 6 This is a schematic diagram of the vibration mechanism structure of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Base; 2. Frame; 3. Round opening; 4. Barrel body; 5. Adsorption mechanism; 501. Separating blades; 502. Activated carbon bed; 503. Partition A; 504. Quartz sand pad; 505. Partition B; 506. Placement rack; 6. Vibration mechanism; 601. Vibration motor; 602. Base plate; 603. Spring A; 604. Spring B; 7. Conveying mechanism; 701. Pump body; 702. Pipe B; 703. Pipe C; 704. Rotary joint; 705. Outer shell; 706. Diverter pipe; 707. Nozzle; 8. Edge A; 9. Edge B; 10. Top cover; 11. Gathering hopper; 12. Pipe A. Detailed Implementation

[0024] like Figures 1 to 6As shown, the present invention relates to an activated carbon adsorption treatment device for leachate from a waste transfer station, comprising a base 1, a frame 2 arranged at one end of the upper surface of the base 1, a circular opening 3 in the middle of the upper end of the frame 2, a barrel 4 arranged inside the circular opening 3, an adsorption mechanism 5 arranged inside the barrel 4, a vibration mechanism 6 arranged outside the barrel 4, and a conveying mechanism 7 arranged at the other end of the upper surface of the base 1, and the conveying mechanism 7 is connected to the barrel 4.

[0025] The adsorption mechanism 5 includes a separating blade 501, which has a multi-level spiral structure. An activated carbon bed 502 is arranged inside the separating blade 501. A mesh A503 is arranged above the separating blade 501. A placement rack 506 is arranged on the mesh A503. A quartz sand pad 504 is arranged on the placement rack 506. A mesh B505 is arranged below the separating blade 501.

[0026] The conveying mechanism 7 includes a housing 705, inside which a rotary joint 704 is arranged. The output end of the rotary joint 704 is connected to a diverter pipe 706. Two sets of nozzles 707 are arranged symmetrically in opposite directions at 180° on the lower surface of the diverter pipe 706. This invention utilizes a multi-stage spiral structure with a partition blade 501 to divide the activated carbon bed 502 into multiple independent adsorption units. The spiral flow channel design promotes a spiral flow path for the leachate, extending its residence time within the activated carbon bed 502 and increasing the contact area between the liquid and the adsorbent material. This structural design effectively reduces the water velocity gradient, minimizing inadequate adsorption caused by excessively high local flow rates. Furthermore, the guiding effect of the blades ensures uniform distribution of the leachate throughout the activated carbon bed 502, improving the utilization rate of the adsorbent material. Additionally, the spiral partition structure helps maintain a moderate turbulent state of the activated carbon particles, delaying the formation of the filter cake layer, thereby extending the adsorption cycle and reducing the frequency of activated carbon replacement. The activated carbon bed 502 can adsorb dissolved pollutants such as organic matter and heavy metal ions in the leachate, deeply purifying the water and removing pollutants that are difficult to treat with conventional physical filtration. Meanwhile, the quartz sand cushion layer 504 can physically filter the leachate, utilizing… Large suspended particles in the leachate are intercepted through interparticle gaps to achieve preliminary impurity separation. The design of mesh A503 and mesh B505 allows the quartz sand cushion layer 504 and activated carbon bed layer 502 to be placed separately, preventing them from mixing and also preventing the activated carbon bed layer 502 from falling into the collection hopper 11. The design of the diversion pipe 706 and nozzle 707 involves two sets of nozzles 707 symmetrically arranged on the lower surface of the diversion pipe 706, in a 180° symmetrical opposite arrangement. When the leachate passes through the diversion pipe 706... At the same time, the spray from the nozzle 707 in the opposite direction generates a rotational torque, which drives the diversion pipe 706 to rotate slowly. This dynamic water distribution method can achieve uniform water distribution in the quartz sand cushion layer 504, expand the contact area between the leachate and the quartz sand cushion layer 504, and improve the interception efficiency of large suspended particles. The angle design of the nozzle 707 can adjust the direction of water jetting. Combined with the rotational movement of the diversion pipe 706, it effectively improves the problem of insufficient flow in the edge area of ​​the traditional water distribution system, making the filtration effect in the pretreatment stage more stable.

[0027] In this embodiment of the utility model, the barrel 4 adopts a multi-stage variable diameter structure, and the whole is in the form of gradually shrinking from top to bottom. An overlap A8 is arranged on the upper end of the inner side of the barrel 4, and a partition net A503 is placed on the overlap A8. An overlap B9 is arranged on the lower end of the inner side of the barrel 4, and a partition net B505 is placed on the overlap B9. A top cover 10 is rotatably installed on the upper end of the outer side of the barrel 4. A shell 705 is installed through the middle of the top cover 10. A collection hopper 11 is arranged on the lower end of the outer side of the barrel 4, and a pipe A12 is connected to the lower end of the collection hopper 11. The barrel 4 of this utility model adopts a multi-stage variable diameter structure design to allow the separator B505, separator blades 501, activated carbon bed 502, separator A503, and quartz sand pad 504 to be placed sequentially inside the barrel 4. This placement does not obstruct the above-mentioned order of placement, and the subsequent dismantling can be carried out in reverse order, which is convenient for workers to replace separator A503, separator B505, quartz sand pad 504, and activated carbon bed 502. By designing the overlapping structure A8 and overlapping structure B9, separator A503 and separator B505 can be overlapped inside the barrel 4, thus providing a placement position. By designing the collection hopper 11 and pipe A12 structure, after the leachate is filtered by the quartz sand pad 504 and activated carbon bed 502, the filtered liquid can be collected and uniformly transported away.

[0028] In this embodiment of the invention, the vibration mechanism 6 includes a vibration motor 601, a base plate 602, springs A603 and B604. The vibration motor 601 is fixed to the middle two sides of the outside of the barrel 4, and the base plate 602 is fixed to the lower side of the outside of the barrel 4. The base plate 602 is connected to the base 1 through springs A603, and the upper side of the outside of the barrel 4 is connected to the frame 2 through springs B604. This invention, through the design of the vibration motor 601, springs A603 and B604, allows the barrel 4 to be flexibly suspended in the middle of the frame 2. When the vibration motor 601 is started, the generated excitation force is transmitted to the barrel 4 through the spring system, forming a three-dimensional vibration with controllable amplitude. This vibration method can effectively loosen the filter cake layer formed on the surface of the activated carbon bed 502, maintaining the porosity of the carbon layer. Compared with traditional ultrasonic devices, this structure achieves a similar adsorption performance recovery effect through mechanical vibration, while also being compact and easy to maintain, making it suitable for small and medium-sized leachate treatment scenarios.

[0029] In an embodiment of this utility model, the conveying mechanism 7 further includes a pump body 701. The input end of the pump body 701 is connected to a pipe B702, and the output end of the pump body 701 is connected to a pipe C703. One end of the pipe C703 is connected to the input end of the rotary joint 704. By designing the structure of the pump body 701, pipe B702, and pipe C703, this utility model enables the leachate generated in the waste transfer station to be actively conveyed into the bin 4, achieving the effect of active pumping. By designing the rotary joint 704, when the diversion pipe 706 rotates due to the reverse thrust generated by the leachate sprayed from the nozzle 707, it will not cause the pipe C703 to rotate. In this way, the pipe C703 can convey the leachate into the diversion pipe 706 through the rotary joint 704, while the diversion pipe 706 will not cause the pipe C703 to rotate, achieving the effect of separation of rotational forces.

[0030] In this embodiment of the invention, the placement rack 506 has an overall spiral ring structure, and the inner side of the placement rack 506 adopts a triangular structure design. The spiral ring structure design of the placement rack 506 is to allow the quartz sand pad layer 504 to be stacked in a conical shape on the partition mesh A503. This reduces the amplitude of the quartz sand pad layer 504 being sprayed when the nozzle 707 sprays leachate onto its surface, preventing the nozzle 707 from directly washing away and piling up part of the quartz sand pad layer 504, making it difficult to evenly place the quartz sand pad layer 504 on the partition mesh A503, which would make it difficult to evenly separate the impurities in the leachate later. The triangular structure design of the inner side is to allow the leachate that seeps into the quartz sand pad layer 504 to flow inward along its inner edge, making full contact with the quartz sand pad layer 504, and preventing the leachate that enters the quartz sand pad layer 504 from flowing directly down the edge, thus reducing the efficiency of the initial impurity separation of the leachate.

[0031] Working Principle: This embodiment provides an activated carbon adsorption treatment device for leachate from a waste transfer station. During use, the operator needs to connect an external power supply to the device and control its operation via a control panel. The operator starts the pump 701, drawing the leachate into the device through pipe B702, and then transporting it to the diversion pipe 706 through pipe C703. Once inside the diversion pipe 706, the leachate is sprayed out through nozzles 707. The leachate sprayed from nozzles 707 onto the quartz sand cushion layer 504 generates a reverse thrust, which drives the diversion pipe 706 to rotate. This causes the nozzles 707, mounted on the lower surface of the diversion pipe 706, to rotate and evenly spray the leachate onto the surface of the quartz sand cushion layer 504. After entering the quartz sand cushion layer 504, the leachate is absorbed by the quartz sand. The sand cushion layer 504 adsorbs and filters large suspended particles. After the leachate is initially filtered by the quartz sand cushion layer 504, it enters the separator blade 501 and flows along the spiral structure of the separator blade 501. At this time, the activated carbon bed layer 502 placed in the separator blade 501 will treat the leachate and adsorb the organic matter in the leachate. The liquid obtained after adsorption treatment will be collected and transferred to the pipeline A12 through the collection hopper 11 and finally discharged through the pipeline A12. When a filter cake layer is formed on the activated carbon bed layer 502 due to adsorption and filtration, the operator needs to start the vibration motor 601. The vibration motor 601 starts to vibrate and drives the barrel 4 to vibrate. After the barrel 4 vibrates, it will loosen the activated carbon bed layer 502 inside to maintain the porosity of the carbon layer.

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An activated carbon adsorption treatment device for leachate from a landfill transfer station, comprising a base (1), characterized in that: A frame (2) is arranged on one end of the upper surface of the base (1). A round opening (3) is opened in the middle of the upper end of the frame (2). A barrel (4) is arranged inside the round opening (3). An adsorption mechanism (5) is arranged inside the barrel (4). A vibration mechanism (6) is arranged outside the barrel (4). A conveying mechanism (7) is arranged on the other end of the upper surface of the base (1), and the conveying mechanism (7) is connected to the barrel (4). The adsorption mechanism (5) includes a separating blade (501), which has a multi-level spiral structure. An activated carbon bed (502) is arranged inside the separating blade (501). A partition A (503) is arranged above the separating blade (501). A placement rack (506) is arranged on the partition A (503). A quartz sand pad (504) is arranged on the placement rack (506). A partition B (505) is arranged below the separating blade (501). The conveying mechanism (7) includes a housing (705), inside which a rotary joint (704) is arranged. The output end of the rotary joint (704) is connected to a diverter pipe (706), and two sets of nozzles (707) are arranged symmetrically in opposite directions at 180° on the lower surface of the diverter pipe (706).

2. The activated carbon adsorption treatment device for leachate from a waste transfer station according to claim 1, characterized in that: The barrel (4) adopts a multi-stage variable diameter structure and has a gradually shrinking shape from top to bottom. An overlap A (8) is arranged on the upper part of the inner side of the barrel (4), and a mesh A (503) is placed on the overlap A (8). An overlap B (9) is arranged on the lower part of the inner side of the barrel (4), and a mesh B (505) is placed on the overlap B (9). A top cover (10) is rotatably installed on the upper part of the outer side of the barrel (4), and an outer shell (705) is installed through the middle of the top cover (10). A collection hopper (11) is arranged on the lower part of the outer side of the barrel (4), and a pipe A (12) is connected to the lower end of the collection hopper (11).

3. The activated carbon adsorption treatment device for leachate from a waste transfer station according to claim 2, characterized in that: The vibration mechanism (6) includes a vibration motor (601), a base plate (602), spring A (603) and spring B (604). The vibration motor (601) is fixed on both sides of the outside of the barrel (4). The base plate (602) is fixed on the lower side of the outside of the barrel (4). The base plate (602) is connected to the base (1) through spring A (603). The upper side of the outside of the barrel (4) is connected to the frame (2) through spring B (604).

4. The activated carbon adsorption treatment device for leachate from a waste transfer station according to claim 3, characterized in that: The conveying mechanism (7) also includes a pump body (701), the input end of which is connected to a pipe B (702), the output end of which is connected to a pipe C (703), and one end of the pipe C (703) is connected to the input end of a rotary joint (704).

5. The activated carbon adsorption treatment device for leachate from a waste transfer station according to claim 4, characterized in that: The placement rack (506) has an overall spiral ring structure, and the inner side of the placement rack (506) adopts a triangular structure design.

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