Ozone catalytic oxidation device for landfill leachate

Abstract

The utility model discloses a kind of garbage leachate ozone catalytic oxidation devices, belong to garbage leachate processing technical field, including bottom plate, the top surface of the bottom plate is fixedly connected with first oxidation cylinder, the top surface of the bottom plate is fixedly connected with second oxidation cylinder.In the utility model, by setting first oxidation cylinder and second oxidation cylinder, ozone supply mechanism is used to provide ozone to the inner cavity of first oxidation cylinder and second oxidation cylinder, using first liquid supply pipe, first liquid injection ring pipe and first spray head to guide the leachate to be handled into the inner cavity of first oxidation cylinder, so that the ozone in first oxidation cylinder is oxidized to leachate, in addition, by first water pump, first liquid guide pipe, second liquid supply pipe, second liquid injection ring pipe and second spray head, the leachate in the inner cavity of first oxidation cylinder is extracted to the inner cavity of second oxidation cylinder, using the ozone in the inner cavity of second oxidation cylinder to oxidize leachate again, ensure the quality of processing to leachate.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate treatment technology, and more specifically, to a landfill leachate ozone catalytic oxidation device. Background Technology

[0002] Landfill leachate refers to a high-concentration organic wastewater originating from the moisture contained in the landfill itself, rainwater and snowmelt entering the landfill, and other water sources, after deducting the saturated water-holding capacity of the landfill and the topsoil layer, and passing through the landfill and topsoil layers. Landfill leachate concentrate is the residual liquid after the landfill leachate has undergone biodegradation and is then filtered through a reverse osmosis membrane. It typically contains recalcitrant organic matter and high-valence salts, and direct discharge into the environment would cause serious damage.

[0003] A search revealed that utility model patent CN216737847U discloses an ozone catalytic oxidation device for landfill leachate membrane concentrate. The device includes a housing with a water distribution pipe connected to the bottom. An ozone generator is installed outside the housing, connected to an air inlet pipe, which in turn connects to an ozone distribution pipe. A branch pipe is connected to the side of the air inlet pipe. A motor is mounted on the top of the housing and connected to a rotating shaft via a coupling. A stirring shaft is evenly distributed on the surface of the rotating shaft. The ozone generator is also connected to a return air pipe. This patent incorporates a Y-shaped connector on the water distribution pipe, utilizing corresponding nozzles to achieve multi-directional liquid intake. The addition of the ozone distribution pipe and branch pipes, along with the hollow rotating shaft and stirring shaft, increases the contact area between ozone and the landfill leachate membrane concentrate, thereby improving catalytic oxidation efficiency. The return air pipe collects the reacted ozone, enhancing ozone utilization.

[0004] However, the above-mentioned patents still have the following shortcomings: when landfill leachate is continuously introduced into the tank, the leachate stays in the tank for a limited time, which affects the treatment effect of the leachate; in addition, the oxidation effect between ozone and leachate alone is not good. Therefore, we have proposed a landfill leachate ozone catalytic oxidation device. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide an ozone catalytic oxidation device for landfill leachate.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An ozone catalytic oxidation device for landfill leachate includes a base plate, a first oxidation cylinder and a second oxidation cylinder fixedly connected to the top surface of the base plate, an ozone supply mechanism on the base plate, a stirring mechanism on the side of both the first and second oxidation cylinders, a catalytic mechanism on both the first and second oxidation cylinders, a first liquid supply pipe fixedly sleeved on the side of the first oxidation cylinder, the end of the first liquid supply pipe extending into the inner cavity of the first oxidation cylinder and fixedly connected to a first spray ring pipe, a plurality of first nozzles on the top surface of the first spray ring pipe, a second liquid supply pipe fixedly sleeved on the side of the second oxidation cylinder, the end of the second liquid supply pipe extending into the inner cavity of the second oxidation cylinder and fixedly connected to a second spray ring pipe, a plurality of second nozzles on the top of the second spray ring pipe, a first water pump fixedly installed on the side of the top of the first oxidation cylinder, the input end of the first water pump extending into the inner cavity of the first oxidation cylinder, the output end of the first water pump fixedly connected to a first guide pipe, and the end of the first guide pipe connected to the other end of the second liquid supply pipe.

[0008] As a preferred embodiment of the present invention, the catalytic mechanism includes a feed pipe disposed on the side of the first oxidation cylinder or the second oxidation cylinder, and a lower support net and an upper support net fixedly sleeved inside the cavity of the first oxidation cylinder or the second oxidation cylinder. A catalyst is disposed between the lower support net and the upper support net, and a threaded plug is threadedly installed at the end of the feed pipe.

[0009] As a preferred embodiment of this utility model, the ozone supply mechanism includes an ozone generator fixedly installed on the top surface of the base plate. The output end of the ozone generator is fixedly connected to a first gas guide steel pipe. A three-way connector is fixedly sleeved at the end of the first gas guide steel pipe. A second gas guide steel pipe is fixedly sleeved at both ends of the three-way connector. The ends of the two second gas guide steel pipes extend to the inner cavities of the first oxidation cylinder and the second oxidation cylinder, respectively, and are fixedly connected to an aeration box. Multiple aeration heads are provided on the top surface of each aeration box.

[0010] As a preferred embodiment of the present invention, the stirring mechanism includes a servo motor fixedly installed on the side of the first oxidation cylinder or the second oxidation cylinder, the output shaft of the servo motor extending into the inner cavity of the first oxidation cylinder or the second oxidation cylinder and fixedly connected to a stirring rod via a coupling, and multiple stirring plates fixedly connected to the side of the stirring rod.

[0011] As a preferred embodiment of this utility model, an exhaust pipe is fixedly sleeved on the top of both the first oxidation cylinder and the second oxidation cylinder, a second water pump is fixedly installed on the side of the second oxidation cylinder, the input end of the second water pump extends into the inner cavity of the second oxidation cylinder, and the output end of the second water pump is fixedly connected to a second liquid guide pipe.

[0012] In a preferred embodiment of this utility model, the end of the injection tube is located between the lower support net and the upper support net.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, by setting up a first oxidation cylinder and a second oxidation cylinder, ozone is supplied to the inner cavity of the first oxidation cylinder and the second oxidation cylinder by an ozone supply mechanism. The leachate to be treated is introduced into the inner cavity of the first oxidation cylinder by a first liquid supply pipe, a first liquid spraying ring pipe and a first nozzle, so that the ozone in the first oxidation cylinder oxidizes the leachate. The leachate in the inner cavity of the first oxidation cylinder is pumped into the inner cavity of the second oxidation cylinder by a first water pump, a first liquid guide pipe, a second liquid supply pipe, a second liquid spraying ring pipe and a second nozzle. The leachate is then oxidized again by the ozone in the inner cavity of the second oxidation cylinder, so as to ensure the quality of leachate treatment.

[0015] (2) In this utility model, by setting a lower support net, an upper support net, a catalyst, a feeding pipe and a threaded plug on the first oxidation cylinder and the second oxidation cylinder respectively, when ozone and leachate enter the inner cavity of the first oxidation cylinder and the second oxidation cylinder, they move upward. The catalyst directly mineralizes or decomposes the large molecules and long-chain recalcitrant pollutants in the leachate into small molecules that are easily degradable, thus ensuring the quality of leachate treatment. Attached Figure Description

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

[0017] Figure 2 This is a schematic cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the first oxidation cylinder of this utility model;

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

[0020] Figure 5 This is a schematic diagram of the stirring mechanism of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Base plate; 2. First oxidation cylinder; 3. Second oxidation cylinder; 4. Ozone supply mechanism; 5. First liquid supply pipe; 6. First spray ring pipe; 7. First nozzle; 8. Second liquid supply pipe; 9. Second spray ring pipe; 10. Second nozzle; 11. First water pump; 12. First liquid guide pipe; 13. Stirring mechanism; 14. Catalytic mechanism; 15. Lower support net; 16. Upper support net; 17. Catalyst; 18. Injection pipe; 19. Threaded plug; 20. Exhaust pipe; 21. Second water pump; 22. Second liquid guide pipe; 23. Ozone generator; 24. First air guide steel pipe; 25. T-joint; 26. Second air guide steel pipe; 27. Aeration box; 28. Aeration head; 29. ​​Servo motor; 30. Stirring rod; 31. Stirring plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] Please see Figure 1-5An ozone catalytic oxidation device for landfill leachate includes a base plate 1, a first oxidation cylinder 2 fixedly connected to the top surface of the base plate 1, a second oxidation cylinder 3 fixedly connected to the top surface of the base plate 1, an ozone supply mechanism 4 disposed on the base plate 1, a stirring mechanism 13 disposed on the sides of both the first oxidation cylinder 2 and the second oxidation cylinder 3, a catalytic mechanism 14 disposed on both the first oxidation cylinder 2 and the second oxidation cylinder 3, a first liquid supply pipe 5 fixedly sleeved on the side of the first oxidation cylinder 2, the end of the first liquid supply pipe 5 extending into the inner cavity of the first oxidation cylinder 2 and fixedly connected to a first liquid spraying ring pipe 6, the first liquid spraying ring... The top surface of the pipe 6 is provided with multiple first nozzles 7. The side of the second oxidation cylinder 3 is fixedly sleeved with a second liquid supply pipe 8. The end of the second liquid supply pipe 8 extends into the inner cavity of the second oxidation cylinder 3 and is fixedly connected to a second spray ring pipe 9. The top of the second spray ring pipe 9 is provided with multiple second nozzles 10. The side of the top of the first oxidation cylinder 2 is fixedly installed with a first water pump 11. The input end of the first water pump 11 extends into the inner cavity of the first oxidation cylinder 2. The output end of the first water pump 11 is fixedly connected to a first liquid guide pipe 12. The end of the first liquid guide pipe 12 is connected to the other end of the second liquid supply pipe 8.

[0028] For details, please refer to Figure 1 and Figure 2 The catalytic mechanism 14 includes a feed pipe 18 disposed on the side of the first oxidation cylinder 2 or the second oxidation cylinder 3, and a lower support net 15 and an upper support net 16 fixedly sleeved in the inner cavity of the first oxidation cylinder 2 or the second oxidation cylinder 3. A catalyst 17 is disposed between the lower support net 15 and the upper support net 16, and a threaded plug 19 is threadedly installed at the end of the feed pipe 18.

[0029] In this embodiment, the end of the injection tube 18 is sealed by the threaded plug 19, and the catalyst 17 can be Cu-Mn / Y-Al2O3 and a composite metal catalyst.

[0030] For details, please refer to Figures 1 to 4 The ozone supply mechanism 4 includes an ozone generator 23 fixedly installed on the top surface of the base plate 1. The output end of the ozone generator 23 is fixedly connected to a first gas guide steel pipe 24. A three-way connector 25 is fixedly sleeved at the end of the first gas guide steel pipe 24. A second gas guide steel pipe 26 is fixedly sleeved at both ends of the three-way connector 25. The ends of the two second gas guide steel pipes 26 extend to the inner cavity of the first oxidation cylinder 2 and the second oxidation cylinder 3 respectively and are fixedly connected to an aeration box 27. Multiple aeration heads 28 are provided on the top surface of the aeration box 27.

[0031] For details, please refer to Figure 1 , Figure 2 and Figure 5The stirring mechanism 13 includes a servo motor 29 fixedly installed on the side of the first oxidation cylinder 2 or the second oxidation cylinder 3. The output shaft of the servo motor 29 extends into the inner cavity of the first oxidation cylinder 2 or the second oxidation cylinder 3 and is fixedly connected to a stirring rod 30 via a coupling. Multiple stirring plates 31 are fixedly connected to the side of the stirring rod 30.

[0032] In this embodiment, a servo motor 29 drives a stirring rod 30 and a stirring plate 31. The stirring plate 31 is used to agitate the leachate inside the first oxidation cylinder 2 and the second oxidation cylinder 3 to ensure complete oxidation.

[0033] For details, please refer to Figure 1 The top of the first oxidation cylinder 2 and the second oxidation cylinder 3 are both fixedly fitted with exhaust pipes 20. The side of the second oxidation cylinder 3 is fixedly installed with a second water pump 21. The input end of the second water pump 21 extends into the inner cavity of the second oxidation cylinder 3. The output end of the second water pump 21 is fixedly connected with a second liquid guide pipe 22.

[0034] In this embodiment, excess gas is discharged from the inner cavities of the first oxidation cylinder 2 and the second oxidation cylinder 3 through the exhaust pipe 20.

[0035] For details, please refer to Figure 2 and Figure 3 The end of the injection pipe 18 is located between the lower support net 15 and the upper support net 16.

[0036] In this embodiment, it is ensured that catalyst 17 can be added between the lower support net 15 and the upper support net 16 from the injection pipe 18.

[0037] Working Principle: In operation, an external water pump first draws the leachate from the first supply pipe 5 into the inner cavity of the first spray ring pipe 6, causing the leachate to be sprayed from the first nozzle 7 into the inner cavity of the first oxidation cylinder 2. The ozone generator 23 is then activated to produce ozone. The ozone is transmitted through the first air guide pipe 24, the tee connector 25, and the second air guide pipe 26 to the aeration boxes 27 inside the first and second oxidation cylinders 2 and 3. The ozone in the two aeration boxes 27 is then sprayed from the aeration heads 28 into the inner cavities of the first and second oxidation cylinders 2 and 3. The ozone sprayed from the aeration heads 28 in the first oxidation cylinder 2 comes into contact with the leachate sprayed from the first nozzle 7, thus oxidizing the leachate. Furthermore, the leachate and ozone... The process involves moving the leachate upwards, allowing it and ozone to pass through the catalyst 17 inside the first oxidation cylinder 2. The catalyst 17 enhances the oxidation of the leachate. Then, the first water pump 11 is activated to draw the leachate from the first liquid guide pipe 12 and the second liquid supply pipe 8 into the inner cavity of the second spray ring pipe 9. The leachate is then sprayed from the second nozzle 10 into the inner cavity of the second oxidation cylinder 3, allowing it to come into contact again with the ozone sprayed from the aeration head 28 inside the second oxidation cylinder 3. This causes the ozone and leachate to move upwards again, where the catalyst 17 inside the second oxidation cylinder 3 catalyzes the process again, further oxidizing the leachate. Finally, the second water pump 21 is activated to extract the leachate from the inner cavity of the second oxidation cylinder 3.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A kind of landfill leachate ozone catalytic oxidation device, including bottom plate (1), it is characterized in that: A first oxidation cylinder (2) is fixedly connected to the top surface of the base plate (1), and a second oxidation cylinder (3) is fixedly connected to the top surface of the base plate (1). An ozone supply mechanism (4) is provided on the base plate (1). A stirring mechanism (13) is provided on the side of both the first oxidation cylinder (2) and the second oxidation cylinder (3). A catalytic mechanism (14) is provided on both the first oxidation cylinder (2) and the second oxidation cylinder (3). A first liquid supply pipe (5) is fixedly sleeved on the side of the first oxidation cylinder (2). The end of the first liquid supply pipe (5) extends into the inner cavity of the first oxidation cylinder (2) and is fixedly connected to a first liquid spraying ring pipe (6). The top surface of the first liquid spraying ring pipe (6) is provided with multiple A first nozzle (7) is provided. A second liquid supply pipe (8) is fixedly sleeved on the side of the second oxidation cylinder (3). The end of the second liquid supply pipe (8) extends into the inner cavity of the second oxidation cylinder (3) and is fixedly connected to a second spray ring pipe (9). A plurality of second nozzles (10) are provided on the top of the second spray ring pipe (9). A first water pump (11) is fixedly installed on the side of the top of the first oxidation cylinder (2). The input end of the first water pump (11) extends into the inner cavity of the first oxidation cylinder (2). The output end of the first water pump (11) is fixedly connected to a first liquid guide pipe (12). The end of the first liquid guide pipe (12) is connected to the other end of the second liquid supply pipe (8).

2. The ozone catalytic oxidation device for landfill leachate according to claim 1, characterized in that: The catalytic mechanism (14) includes a feeding pipe (18) disposed on the side of the first oxidation cylinder (2) or the second oxidation cylinder (3) and a lower support net (15) and an upper support net (16) fixedly sleeved in the inner cavity of the first oxidation cylinder (2) or the second oxidation cylinder (3). A catalyst (17) is disposed between the lower support net (15) and the upper support net (16). A threaded plug (19) is threadedly installed at the end of the feeding pipe (18).

3. The ozone catalytic oxidation device for landfill leachate according to claim 1, characterized in that: The ozone supply mechanism (4) includes an ozone generator (23) fixedly installed on the top surface of the base plate (1). The output end of the ozone generator (23) is fixedly connected to a first gas guide steel pipe (24). A three-way connector (25) is fixedly sleeved at the end of the first gas guide steel pipe (24). A second gas guide steel pipe (26) is fixedly sleeved at both ends of the three-way connector (25). The ends of the two second gas guide steel pipes (26) extend to the inner cavities of the first oxidation cylinder (2) and the second oxidation cylinder (3) respectively and are fixedly connected to an aeration box (27). A plurality of aeration heads (28) are provided on the top surface of the aeration box (27).

4. The ozone catalytic oxidation device for landfill leachate according to claim 1, characterized in that: The stirring mechanism (13) includes a servo motor (29) fixedly installed on the side of the first oxidation cylinder (2) or the second oxidation cylinder (3). The output shaft of the servo motor (29) extends into the inner cavity of the first oxidation cylinder (2) or the second oxidation cylinder (3) and is fixedly connected to a stirring rod (30) via a coupling. Multiple stirring plates (31) are fixedly connected to the side of the stirring rod (30).

5. The ozone catalytic oxidation device for landfill leachate according to claim 1, characterized in that: The top of the first oxidation cylinder (2) and the second oxidation cylinder (3) are both fixedly fitted with exhaust pipes (20). The second oxidation cylinder (3) is fixedly installed with a second water pump (21). The input end of the second water pump (21) extends into the inner cavity of the second oxidation cylinder (3). The output end of the second water pump (21) is fixedly connected with a second liquid guide pipe (22).

6. The ozone catalytic oxidation device for landfill leachate according to claim 2, characterized in that: The end of the injection tube (18) is located between the lower support net (15) and the upper support net (16).

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