Biological nitrogen removal tank for landfill leachate

Abstract

The utility model relates to the technical field of landfill leachate treatment equipment, in particular to a landfill leachate biological denitrification tank which comprises a denitrification tank body and a sieve plate arranged in the denitrification tank body. The first cleaning device comprises a plurality of cleaning ejector rods used for cleaning impurities in filter holes of the sieve plate and a driving assembly used for driving the cleaning ejector rods to ascend and descend, and the cleaning ejector rods correspond to the filter holes of the sieve plate in the vertical direction. The biological nitrogen removal tank for the landfill leachate has the effect of improving the treatment efficiency of the nitrogen removal tank on the landfill leachate.

Description

Technical Field

[0001] The present application relates to the technical field of landfill leachate treatment equipment, and in particular to a landfill leachate biological denitrification tank. Background Art

[0002] Landfill leachate refers to a highly concentrated organic wastewater formed by the water content of the landfill's own garbage, rainwater, snow, and other water entering the landfill, minus the saturated water holding capacity of the garbage and overburden, and through the garbage and overburden layers. It also includes water that seeps from accumulated garbage destined for incineration. The properties of leachate change over the life of the landfill, primarily due to the stabilization process. This process is typically divided into five stages: initial adjustment, transition, acidification, methane fermentation, and maturation. Wastewater generally contains high levels of nitrogen, requiring separate treatment. Biological denitrification tanks are the most effective treatment equipment for leachate with high ammonia nitrogen and organic content. By combining advanced microbial technology with ecological principles, they can improve denitrification efficiency and minimize environmental impact. Among them, nitrifying bacteria play a vital role in the biological denitrification process. They oxidize ammonia nitrogen into nitrate nitrogen, creating conditions for the subsequent denitrification process, thereby achieving nitrogen removal.

[0003] At present, biological denitrification tanks usually include a denitrification tank body and a sieve plate arranged in the denitrification tank body. After the landfill leachate enters the denitrification tank body, it is first filtered through the sieve plate for preliminary filtration, and the filtered landfill leachate is then subjected to subsequent denitrification treatment.

[0004] The inventor believes that the prior art has the defect that the filter holes of the sieve plate are easily clogged during use, which leads to poor treatment efficiency of the denitrification tank for landfill leachate. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention proposes a biological denitrification tank for landfill leachate, which has the effect of improving the treatment efficiency of the denitrification tank for landfill leachate.

[0006] The present application provides a bio-denitrification tank for landfill leachate, which adopts the following technical solution:

[0007] A biological denitrification tank for leachate comprises a denitrification tank body and a sieve plate arranged in the denitrification tank body. A cleaning device is provided in the denitrification tank body. The cleaning device comprises a cleaning push rod for cleaning impurities in the filter holes of the sieve plate and a driving assembly for driving the cleaning push rod to rise and fall. A plurality of cleaning push rods are provided, and the cleaning push rods are arranged corresponding to the filter holes of the sieve plate in the vertical direction.

[0008] Optionally, the drive assembly includes a mounting plate that is slidably fitted in the denitrification tank body and a driver for driving the mounting plate to move up and down, the cleaning ejector rod is mounted on the mounting plate, and the driver is mounted in the denitrification tank body.

[0009] Optionally, the top end of the cleaning push rod is provided with a curved surface.

[0010] Optionally, a plurality of leakage slots for material leakage are provided on the mounting plate.

[0011] Optionally, a second cleaning device is provided in the denitrification tank body, and the second cleaning device includes a rotating mechanism for driving the mounting plate to rotate and a buffering mechanism for buffering the vibration of the screen plate. The mounting plate rotates in conjunction with the denitrification tank body, and the rotating mechanism drives the mounting plate to rotate, and the mounting plate can impact the screen plate.

[0012] Optionally, the rotating mechanism includes a rotating assembly for driving the mounting plate to rotate and a driving member for driving the rotating assembly to rotate, and one end of the driving member is connected to the driver.

[0013] Optionally, the rotating assembly includes a worm mounted on the driving member and a worm wheel engaged with the worm, and the worm wheel is connected to the mounting plate.

[0014] Optionally, the buffer mechanism includes a fixed plate, a limiting plate and a buffer elastic member installed in the denitrification tank body, one end of the buffer elastic member is connected to the fixed plate, and the other end is connected to the sieve plate. The limiting plate is located above the sieve plate and is used to limit the lifting and lowering movement of the sieve plate.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. Through the setting of the cleaning device 1, when the filter holes of the sieve plate are blocked during use, the driving component is started to drive the cleaning push rod to rise. The cleaning push rod can be inserted into the filter holes to clean the impurities in the filter holes. The cleaned sieve plate can be used again, which can improve the treatment efficiency of the denitrification tank for landfill leachate;

[0017] 2. The arc-shaped surface makes it easier for the cleaning rod to be inserted into the filter hole;

[0018] 3. The setting of the leakage chute can reduce the accumulation of impurities on the mounting plate;

[0019] 4. Through the setting of the cleaning device 2, the rotating mechanism can drive the mounting plate to rotate. When the mounting plate rotates vertically, it can collide with the screen plate, thereby causing the screen plate to vibrate and rotate through the buffer mechanism, so that the impurities on the screen plate can be easily cleaned, further improving the denitrification tank's treatment efficiency for leachate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of this application;

[0021] Figure 2 is a structural schematic diagram showing the connection relationship between the rotating mechanism and the mounting plate;

[0022] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0023] Explanation of the accompanying drawings: 1. Denitrification tank body; 2. Sieve plate; 3. Cleaning device 1; 31. Cleaning push rod; 311. Arc surface; 32. Driving assembly; 321. Mounting plate; 3211. Leakage trough; 322. Driver; 4. Cleaning device 2; 41. Rotating mechanism; 411. Driving member; 412. Worm; 413. Worm gear; 42. Buffer mechanism; 421. Fixed plate; 422. Limiting plate; 423. Buffer elastic member. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application embodiment discloses a bio-denitrification tank for landfill leachate. Figure 1-Figure 3 The denitrification system comprises a denitrification tank body 1 and a sieve plate 2 disposed within the denitrification tank body 1. A feed port is disposed at the top of the denitrification tank body 1, and a plurality of filter holes are evenly distributed on the sieve plate 2. A cleaning device 3 is disposed within the denitrification tank body 1 for cleaning impurities within the filter holes of the sieve plate 2. Landfill leachate enters the denitrification tank body 1 from the top and passes through the sieve plate 2 to filter impurities within the landfill leachate. The filtered landfill leachate undergoes subsequent processing. When impurities within the filter holes of the sieve plate 2 need to be cleaned, the cleaning device 3 is activated to clean the sieve plate 2.

[0026] Reference Figure 1-Figure 3 The cleaning device 3 includes a cleaning rod 31 for cleaning impurities in the filter holes of the sieve plate 2 and a driving assembly 32 for driving the cleaning rod 31 to rise and fall. There are multiple cleaning rods 31, and the cleaning rods 31 are arranged corresponding to the filter holes of the sieve plate 2 in the vertical direction. The cleaning rod 31 is a cylindrical rod, and the top of the cleaning rod 31 is provided with an arc surface 311.

[0027] Among them, reference Figure 1-Figure 3 The driving assembly 32 includes a mounting plate 321 that slides in the denitrification tank body 1 and a driver 322 for driving the mounting plate 321 to rise and fall. The mounting plate 321 is a circular plate, and a rotating shaft is fixedly provided at both ends of the mounting plate 321. A groove for the rotating shaft to slide in the vertical direction is provided on the denitrification tank body 1. A plurality of leakage grooves 3211 for leaking materials are provided on the mounting plate 321. The cleaning push rod 31 is fixedly installed on the mounting plate 321, and the driver 322 is installed in the denitrification tank body 1. The driver 322 directly adopts a hydraulic cylinder, and the cylinder body of the driver 322 is fixedly connected to the denitrification tank body 1.

[0028] Reference Figure 2 and Figure 3 A cleaning device 24 is provided in the denitrification tank body 1. The cleaning device 24 includes a rotating mechanism 41 for driving the mounting plate 321 to rotate and a buffering mechanism 42 for buffering the vibration of the sieve plate 2. The rotating shaft of the mounting plate 321 rotates with the denitrification tank body 1. The rotating mechanism 41 includes a rotating assembly for driving the mounting plate 321 to rotate and a driving member 411 for driving the rotating assembly to rotate. The driving member 411 directly adopts an electric motor. One end of the driving member 411 is fixedly connected to the driver 322, and the driving member 411 slides in the denitrification tank body 1 along the vertical direction.

[0029] Among them, reference Figure 2 and Figure 3 The rotating assembly includes a worm 412 fixedly mounted on the output shaft of a driving member 411 and a worm gear 413 meshing with the worm 412. A support plate for rotationally supporting the worm 412 slides vertically within the denitrification tank 1. The worm gear 413 is fixedly connected to the rotating shaft of the mounting plate 321. The rotating mechanism 41 drives the mounting plate 321 to rotate, and the mounting plate 321 can impact the sieve plate 2.

[0030] Reference Figure 2 and Figure 3 The buffer mechanism 42 includes a fixed plate 421, a limit plate 422 and a buffer elastic member 423 fixedly installed in the denitrification tank body 1. The limit plate 422 is fixedly installed in the denitrification tank body 1. The limit plate 422 is located above the sieve plate 2 and is used to limit the lifting and lowering movement of the sieve plate 2. The buffer elastic member 423 directly adopts a buffer spring. One end of the buffer elastic member 423 is fixedly connected to the fixed plate 421, and the other end is fixedly connected to the sieve plate 2.

[0031] The implementation principle of the biological denitrification tank for landfill leachate of the present application is as follows: when the landfill leachate needs to be treated, the landfill leachate first enters the denitrification tank body 1 from the top of the denitrification tank body 1, and passes through the sieve plate 2 to filter the impurities in the landfill leachate, and the filtered landfill leachate undergoes subsequent processing. When the impurities in the filter holes of the sieve plate 2 need to be cleaned, the driving member 411 is first started, and the driving member 411 rotates, driving the worm 412, the worm gear 413, and the rotating shaft of the mounting plate 321 to rotate in sequence, thereby driving the mounting plate 321 to rotate. When the mounting plate 321 rotates to a vertical state, the top of the mounting plate 321 can hit the sieve plate 2, causing the sieve plate 2 to vibrate and stretch the buffer elastic member 423. The mounting plate 321 continues to rotate, and the mounting plate 321 no longer hits the sieve plate 2. At this time, the buffer elastic member 423 releases its elastic restoring force, driving the sieve plate 2 to reset. During the vertical movement of the sieve plate 2, the impurities on the sieve plate 2 can vibrate.

[0032] When the mounting plate 321 continues to rotate and rotates to a horizontal state, the driver 322 is started at this time, driving the driving member 411, the rotating assembly, the mounting plate 321 and the cleaning push rod 31 to rise, and the cleaning push rod 31 can be inserted into the filter holes of the sieve plate 2, and push the impurities in the filter holes of the sieve plate 2, thereby cleaning the impurities in the filter holes. After cleaning is completed, the cleaning device 1 3 and the cleaning device 2 4 are reset, and the mounting plate 321 can be rotated to a vertical state, which is convenient for the denitrification tank body 1 to subsequently treat the landfill leachate.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0035] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A biological denitrification tank for landfill leachate, comprising a denitrification tank body (1) and a sieve plate (2) arranged in the denitrification tank body (1), characterized in that: A cleaning device (3) is provided in the denitrification tank body (1), and the cleaning device (3) comprises a cleaning push rod (31) for cleaning impurities in the filter holes of the sieve plate (2) and a driving assembly (32) for driving the cleaning push rod (31) to move up and down. A plurality of cleaning push rods (31) are provided, and the cleaning push rods (31) are arranged corresponding to the filter holes of the sieve plate (2) in the vertical direction.

2. The biological denitrification tank for landfill leachate according to claim 1, characterized in that: The driving assembly (32) comprises a mounting plate (321) slidingly engaged in the denitrification tank body (1) and a driver (322) for driving the mounting plate (321) to move up and down, the cleaning ejector (31) is mounted on the mounting plate (321), and the driver (322) is mounted in the denitrification tank body (1).

3. The biological denitrification tank for landfill leachate according to claim 1, characterized in that: The top end of the cleaning push rod (31) is provided with an arc-shaped surface (311).

4. The biological denitrification tank for landfill leachate according to claim 2, characterized in that: The mounting plate (321) is provided with a plurality of material leakage slots (3211) for material leakage.

5. The biological denitrification tank for landfill leachate according to claim 2, characterized in that: A second cleaning device (4) is provided in the denitrification tank body (1). The second cleaning device (4) comprises a rotating mechanism (41) for driving the mounting plate (321) to rotate and a buffering mechanism (42) for buffering the vibration of the sieve plate (2). The mounting plate (321) is in rotational cooperation with the denitrification tank body (1). The rotating mechanism (41) drives the mounting plate (321) to rotate, and the mounting plate (321) can impact the sieve plate (2).

6. The biological denitrification tank for landfill leachate according to claim 5, characterized in that: The rotating mechanism (41) comprises a rotating assembly for driving the mounting plate (321) to rotate and a driving member (411) for driving the rotating assembly to rotate, and one end of the driving member (411) is connected to the driver (322).

7. The biological denitrification tank for landfill leachate according to claim 6, characterized in that: The rotating assembly comprises a worm (412) mounted on a driving member (411) and a worm wheel (413) meshed with the worm (412), wherein the worm wheel (413) is connected to a mounting plate (321).

8. The biological denitrification tank for landfill leachate according to claim 5, characterized in that: The buffer mechanism (42) comprises a fixed plate (421), a limiting plate (422) and a buffer elastic member (423) installed in the denitrification tank body (1); one end of the buffer elastic member (423) is connected to the fixed plate (421), and the other end is connected to the sieve plate (2); the limiting plate (422) is located above the sieve plate (2) and is used to limit the lifting movement of the sieve plate (2).

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