Biological treatment equipment for landfill leachate

Abstract

The invention discloses biological treatment equipment for landfill leachate, relates to the technical field of sewage treatment, and aims to solve the problem that the existing filtering equipment is most commonly used as bag type filtering equipment, but in the filtering process, silt is continuously accumulated in a filter bag, and the leachate continuously impacts the filter bag and pulls the filter bag, so that the filter bag cannot be damaged. Due to the rubber characteristic of the rubber ring, when the filter bag is pulled by impact force, the rubber ring is matched with the screen drum, and the rubber ring is continuously compressed to deform, so that the elastic force generated by the rubber ring for restoring deformation is gradually increased, and the friction force between the rubber ring and the screen drum is continuously increased; the limiting force of downward movement is continuously increased, the impact force is buffered, the supporting force of the bottom supporting mechanism at the bottom is matched, the filter bag is protected, and the filter bag is prevented from being damaged in the silt filtering process, and the filtering effect is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a biological treatment device for landfill leachate. Background Art

[0002] At present, in the process of garbage treatment and disposal, in order to reduce the water content of garbage, it is usually necessary to pile up the garbage. During the stacking process, the garbage is compacted, and the liquid with high concentration of organic or inorganic components produced by microbial decomposition is the garbage leachate. The water quality of the garbage leachate is complex, containing a variety of toxic and harmful inorganic and organic substances. The source of garbage leachate is wide and affected by many factors. The water quality and quantity of the leachate are complex and changeable. At present, the treatment of leachate usually requires multiple steps, among which the initial treatment of the leachate is to filter the leachate through the filtration equipment; Among the existing filtering equipment, the most commonly used is the bag filtering equipment. However, during the filtering process, due to the continuous accumulation of mud and sand in the filter bag and the continuous impact of the leachate on the filter bag, the filter bag is pulled, which can easily cause the filter bag to be damaged without buffering, affecting the filtering work. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: A biological treatment device for landfill leachate, comprising: A frame body, which is used to provide a place for filtering the leachate, and the frame body includes a tank body, the top of the tank body is fixedly connected to a water inlet pipe, the bottom of the tank body is fixedly connected to a water outlet pipe, the bottom of the tank body is fixedly connected to a collar, the bottom of the collar is fixedly connected to a leg, and the leg is symmetrically installed at the bottom of the collar; A screening mechanism, the top of which is fixedly connected with a rivet; A filtering mechanism, the filtering mechanism having a filter bag for filtering sediment in the leachate; A bottom supporting mechanism, the bottom of which is fixedly connected with bolts; The screening mechanism is fixedly mounted on the top of the inner wall of the tank in the frame by rivets, the inner wall of the filtering mechanism is slidably connected with the outer surface of the screening mechanism, and the bottom supporting mechanism is fixedly mounted on the bottom of the inner wall of the tank by bolts; The filter mechanism further comprises a pressure ring, the inner wall of which is fixedly connected with a rubber ring. Through the rubber characteristics of the rubber ring, when the filter bag is pulled by the impact force, it cooperates with the screen drum, and by continuously compressing the rubber annular deformation, the elastic force of the rubber ring to restore the deformation gradually increases, and the friction between the rubber ring and the screen drum is continuously increased, so that the downward limiting force is continuously increased, so as to achieve buffering of the impact force, and cooperate with the supporting force of the bottom supporting mechanism at the bottom to protect the filter bag and prevent the filter bag from being damaged in the process of filtering sediment, thereby affecting the filtering effect. The bottom of the pressure ring is fixedly connected with a stud, and the stud is symmetrically arranged at the bottom of the pressure ring. The outer surface of the stud is threadedly connected to a nut. The bottom of the nut is rotatably connected to a bottom ring, the inner wall of the bottom ring is provided with a warping ring, and the bottom of the pressure ring is provided with a clamping ring, the clamping ring of the pressure ring is matched with the warping ring of the bottom ring, and the gap between the clamping ring of the pressure ring and the warping ring of the bottom ring is clamped with the surface of the filter bag, and the bottom of the bottom ring is fixedly connected to an elastic plate, and the elastic plate is an elastic metal plate. Through the metal elasticity of the elastic plate, when it is compressed, the arc block is pressed so that the arc block presses the filter bag close to the screen cylinder, and at the same time improves the fitting precision of the filter bag and the screening mechanism, and improves the filtering effect. The elastic plate is symmetrically installed at the bottom of the bottom ring, and the bottom of the elastic plate is fixedly connected to an arc block, and the bottom of the arc block fits with the outer surface of the filter bag.

[0004] Preferably, the screening mechanism includes a sieve cylinder, the outer diameter of the bottom of the sieve cylinder gradually increases, the top of the sieve cylinder is fixedly connected to the top of the inner wall of the tank body by rivets, the outer surface of the sieve cylinder is slidably connected to the inner wall of the rubber ring, and a rubber pad is fixedly connected to the outer surface of the sieve cylinder, which blocks the filter bag and the edge of the sieve cylinder at the contact position, and contacts the filter bag through the rubber pad to prevent the sharp edge of the sieve cylinder from scratching the filter bag, causing damage to the filter bag and inability to continue filtering, the inner wall of the sieve cylinder is fixedly connected to a fixing ring, the top of the fixing ring is fixedly connected to a grid ring, the outer surface of the grid ring is in contact with the inner wall of the sieve cylinder, and the outer surface of the grid ring is provided with grid holes.

[0005] Preferably, a magnetic column is fixedly connected to the inner wall of the grid ring, and the magnetic column is a magnetic metal rod. Through the magnetic adsorption of the magnetic column, the metal powder and metal impurities in the leachate sewage are adsorbed to prevent the metal powder from being mixed into the sewage mud in large quantities and accumulated after being filtered by the filter bag. Since the density of the metal powder is greater than the density of the mud, a large amount of metal powder is prevented from mixing with the mud, resulting in excessive weight of the mud accumulated in the filter bag, causing a greater pulling force, affecting the service life of the filter bag. The inner wall of the screen cylinder is fixedly connected to a sieve plate, and the surface of the sieve plate is symmetrically provided with sieve holes, and the sieve holes of the sieve plate are smaller than the sieve holes of the grid ring. Through the cooperation of the sieve plate and the grid ring, different apertures are used to perform double-stage screening of debris in the sewage, so that all debris are prevented from being screened at the same time, and debris of different sizes are accumulated at the same time to cause blockage. The inner wall of the screen cylinder is fixedly connected to a curved plate, and the curved plate is symmetrically installed on the inner wall of the screen cylinder. The curved plate is an elastic metal plate. The bottom end of the curved plate is fixedly connected to an arc plate, and the outer surface of the arc plate fits the inner wall of the filter bag.

[0006] Preferably, the bottom supporting mechanism comprises a connecting ring, which is fixedly connected to the bottom of the inner wall of the tank body by bolts, and the top of the connecting ring is symmetrically provided with a supporting plate, and the top of the supporting plate of the connecting ring is fixedly connected with a perforated plate, and a sliding hole is opened at the center of the surface of the perforated plate, and a sliding column is slidably connected to the sliding hole of the perforated plate, and the top of the sliding column is fixedly connected with a tray, and the top of the tray fits with the bottom of the filter bag, and the bottom end of the sliding column is fixedly connected with a ramp cylinder, and the bottom of the ramp cylinder is symmetrically provided with drainage holes, and the outer diameter of the ramp cylinder gradually decreases from top to bottom, and the inner wall of the ramp cylinder is fixedly connected with a spring, and elastic force is generated through the elastic deformation of the spring, and the elastic force is transmitted to the tray through the sliding column, which becomes a supporting force for the bottom of the filter bag, thereby reducing the gravity pull of the internal accumulated mud and sand on the filter bag, and improving the service life of the filter bag. The top of the spring is fixedly connected to the bottom of the perforated plate.

[0007] Preferably, a slot block is fixedly connected to the top of the orifice plate, and the slot block is symmetrically installed on the top of the orifice plate. The outer surface of the slot block is rotatably connected to a connecting plate, and the bottom end of the connecting plate is fixedly connected to an inclined plate, and the top end of the connecting plate is fixedly connected to a clamping plate, and the end of the clamping plate away from the connecting plate is fitted with the outer surface of the filter bag, and the inner wall of the inclined plate is fitted with the outer surface of the inclined cylinder. The connecting plate is rotated by the push of the inclined plate when the inclined cylinder moves downward, and the clamping plate at the top clamps the filter bag inward. When sediment accumulates, the filtration area of ​​the filter bag is reduced, and the filtration rate is reduced, the filter bag is clamped inward by the clamping plate, and pressure is applied to the outside of the filter bag to improve the filtration efficiency of the filter bag after sediment accumulation.

[0008] The present invention provides a biological treatment device for landfill leachate, which has the following beneficial effects: 1. The rubber ring, through its rubber characteristics, cooperates with the screen drum when the filter bag is pulled by the impact force. By continuously compressing the rubber ring, the elastic force of the rubber ring to restore the deformation gradually increases, and the friction between the rubber ring and the screen drum is continuously increased, so that the downward limiting force is continuously increased, so as to achieve the buffering of the impact force, cooperate with the supporting force of the bottom supporting mechanism at the bottom, protect the filter bag, and prevent the filter bag from being damaged in the process of filtering sediment, thereby affecting the filtering effect.

[0009] 2. The magnetic column can adsorb metal powder and metal impurities in the leachate sewage through magnetic adsorption, so as to prevent a large amount of metal powder from mixing into the sewage mud and silt and accumulating after being filtered by the filter bag. Since the density of metal powder is greater than that of mud and sand, a large amount of metal powder is prevented from mixing with the mud and sand, which will cause the weight of the mud and sand accumulated in the filter bag to be too heavy, resulting in greater pulling force and affecting the service life of the filter bag.

[0010] 3. The sieve plate and the grating ring, through the cooperation of the sieve plate and the grating ring, utilize different apertures to perform double-stage screening of debris in sewage, thereby avoiding screening of all debris at the same time and accumulation of debris of different sizes at the same time to cause blockage.

[0011] Fourth, the spring generates elastic force through its elastic deformation, and transmits the elastic force to the tray through the sliding column, which becomes the supporting force for the bottom of the filter bag, reduces the gravity pulling of the accumulated mud and sand inside the filter bag, and increases the service life of the filter bag.

[0012] 5. The inclined cylinder and the inclined plate are pushed by the inclined plate when the inclined cylinder moves downward, so that the connecting plate rotates, and the clamping plate at the top clamps the filter bag inward. When sediment accumulates, the filtration area of ​​the filter bag is reduced, and the filtration rate is reduced, the filter bag is clamped inward by the clamping plate, and pressure is applied to the outside of the filter bag to improve the filtration efficiency of the filter bag after sediment accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the external structure of a biological treatment device for landfill leachate of the present invention; Figure 2 This is a structural dissection diagram of a biological treatment device for landfill leachate according to the present invention; Figure 3 It is a schematic diagram of the connection position between the filtering mechanism and the screening mechanism of the present invention; Figure 4 It is a dissecting diagram of the connection relationship between the filtering mechanism and the screening mechanism of the present invention; Figure 5 It is a partial structural schematic diagram of the filtering mechanism of the present invention; Figure 6 It is a partial structural dissection diagram of the filtering mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the screening mechanism of the present invention; Figure 8 It is a structural anatomy diagram of the screening mechanism of the present invention; Fig. 9 It is a partial structural anatomical diagram of the screening mechanism of the present invention; Fig.10 This is a schematic diagram of the bottom supporting mechanism structure of the present invention; Fig.11 It is a partial structural schematic diagram of the bottom supporting mechanism of the present invention.

[0014] In the figure: 1, frame; 2, filtering mechanism; 3, screening mechanism; 4, bottom supporting mechanism; 5, rivet; 6, bolt; 11, tank body; 12, collar; 13, leg; 14, water outlet pipe; 15, water inlet pipe; 21, pressure ring; 22, bottom ring; 23, filter bag; 24, stud; 25, elastic plate; 26, arc block; 27, nut; 28, rubber ring; 31, sieve cylinder; 32, arc plate; 33, curved plate; 34, grid ring; 35, fixing ring; 36, magnetic column; 37, sieve plate; 38, rubber pad; 401, splint; 402, sliding column; 403, connecting plate; 404, connecting ring; 405, hole plate; 406, spring; 407, inclined cylinder; 408, inclined plate; 409, slot block; 410, tray. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0016] The first embodiment, as Figures 1 to 6 As shown, the present invention provides a technical solution: a biological treatment device for landfill leachate, comprising: A frame 1 is used to provide a place for filtering the leachate. The frame 1 includes a tank body 11. The top of the tank body 11 is fixedly connected to a water inlet pipe 15. The bottom of the tank body 11 is fixedly connected to a water outlet pipe 14. The bottom of the tank body 11 is fixedly connected to a collar 12. The bottom of the collar 12 is fixedly connected to a support leg 13. The support leg 13 is symmetrically installed at the bottom of the collar 12. A screening mechanism 3, the top of which is fixedly connected with a rivet; A filter mechanism 2, the filter mechanism 2 having a filter bag 23 for filtering sediment in the leachate; A bottom supporting mechanism 4, the bottom of which is fixedly connected with a bolt 6; The screening mechanism 3 is fixedly mounted on the top of the inner wall of the tank body 11 in the frame body 1 by means of rivets 5, the inner wall of the filtering mechanism 2 is slidably connected to the outer surface of the screening mechanism 3, and the bottom supporting mechanism 4 is fixedly mounted on the bottom of the inner wall of the tank body 11 by means of bolts 6; Among them, the filtering mechanism 2 also includes a pressing ring 21, and the inner wall of the pressing ring 21 is fixedly connected with a rubber ring 28. When the filter bag 23 is impacted and pulled, the filter bag 23 pulls the bottom ring 22 and the pressing ring 21 downward together, so that the rubber ring 28 fixed on the inner wall of the pressing ring 21 slides with the outer surface of the sieve cylinder 31. Since the outer diameter of the bottom of the sieve cylinder 31 gradually increases, the rubber ring 28 gradually deforms and compresses during the downward movement, thereby increasing the friction with the surface of the sieve cylinder 31, thereby achieving the buffering of the impact force on the filter bag 23. The bottom of the pressing ring 21 is fixedly connected with a stud 24, and the stud 24 is symmetrically arranged at the bottom of the pressing ring 21. The outer surface of the stud 24 is threadedly connected with a nut 27, and the bottom of the nut 27 is rotatably connected with the bottom ring 22. The inner wall of the bottom ring 22 is provided with a warping ring, which is an annular protrusion inclined from bottom to top and inward. A clamping ring is provided at the bottom of the pressing ring 21, and the clamping ring of the pressing ring 21 and the bottom ring 22 are connected. The gap between the clamping ring of the pressure ring 21 and the warping ring of the bottom ring 22 is connected with the surface of the filter bag 23, and the sewage is filtered through the filter bag 23 for sediment. During the filtering process, due to the impact of the sewage on the filter bag 23, the filter bag 23 is pulled downward on all sides. When pulling, the filter bag 23 is clamped and fixed during installation through the cooperation between the pressure ring 21 and the bottom ring 22. The bottom of the bottom ring 22 is fixedly connected with an elastic plate 25, and the elastic plate 25 is an elastic metal plate. The elastic plate 25 is symmetrically installed at the bottom of the bottom ring 22. The bottom of the elastic plate 25 is fixedly connected with an arc block 26. The bottom of the arc block 26 fits the outer surface of the filter bag 23. While buffering, the arc block 26 is connected through the elastic plate 25, and the arc plate 32 connected to the curved plate 33 cooperates. During the downward movement, the elastic plate 25 is compressed and deformed, compressing the filter bag 23, so that the filter bag 23 is close to the screen cylinder 31.

[0017] The second embodiment is based on the first embodiment. Figures 7 to 9 As shown, the screening mechanism 3 includes a sieve cylinder 31, the outer diameter of the bottom of the sieve cylinder 31 gradually increases, the top of the sieve cylinder 31 is fixedly connected to the top of the inner wall of the tank body 11 by a rivet 5, the outer surface of the sieve cylinder 31 is slidably connected to the inner wall of the rubber ring 28, the outer surface of the sieve cylinder 31 is fixedly connected to a rubber pad 38, the inner wall of the sieve cylinder 31 is fixedly connected to a fixing ring 35, and the top of the fixing ring 35 is fixedly connected to a grid ring 34. The grid ring 34 on the inner wall of the sieve cylinder 31 is used to perform a primary screening of the leachate sewage, and large pieces of debris are blocked through the grid holes of the grid ring 34. Then the sewage passes through the grid holes of the grid ring 34, and the outer surface of the grid ring 34 fits with the inner wall of the sieve cylinder 31, and the outer surface of the grid ring 34 is provided with grid holes.

[0018] The inner wall of the grid ring 34 is fixedly connected with a magnetic column 36, which is a magnetic metal rod. After passing through the grid hole, the leachate sewage flows through the surface of the magnetic column 36, and the metal present in the sewage is adsorbed by the magnetic adsorption of the magnetic column 36. The inner wall of the sieve cylinder 31 is fixedly connected with a sieve plate 37, and the surface of the sieve plate 37 is symmetrically provided with sieve holes, and the sieve holes of the sieve plate 37 are smaller than the grid hole of the grid ring 34. The inner wall of the sieve cylinder 31 is fixedly connected with a curved plate 33, and the curved plate 33 is symmetrically installed on the inner wall of the sieve cylinder 31. After flowing through the magnetic column 36, the leachate sewage will be screened again by the sieve plate 37, and small pieces of debris in the leachate sewage will be screened out. The screened sewage will enter the filter mechanism 2 to filter the sediment. The curved plate 33 is an elastic metal plate, and the bottom end of the curved plate 33 is fixedly connected with an arc plate 32, and the outer surface of the arc plate 32 is in contact with the inner wall of the filter bag 23. While filtering, the arc plate 32 is driven by the curved plate 33 to unfold the filter bag 23.

[0019] The third embodiment is based on the first and second embodiments. Figure 10 to Figure 11 As shown, the bottom supporting mechanism 4 includes a connecting ring 404, which is fixedly connected to the bottom of the inner wall of the tank body 11 by bolts 6, and a supporting plate is symmetrically arranged on the top of the connecting ring 404. A perforated plate 405 is fixedly connected to the top of the supporting plate of the connecting ring 404. A sliding hole is opened at the center of the surface of the perforated plate 405, and a sliding column 402 is slidably connected to the sliding hole of the perforated plate 405. A tray 410 is fixedly connected to the top of the sliding column 402. When the filter bag 23 continuously filters the sediment in the leachate sewage, the sediment gradually accumulates in the filter bag 23, so that the sediment is continuously accumulated at the bottom of the filter bag 23, and the filtering area of ​​the filter bag 23 is gradually reduced, the filter bag 23 is filtered by the bottom supporting mechanism 4. The tray 410 supports the bottom of the filter bag 23. The top of the tray 410 fits with the bottom of the filter bag 23. The bottom end of the slide column 402 is fixedly connected to a sloped cylinder 407. The bottom of the sloped cylinder 407 is symmetrically provided with drainage holes. The outer diameter of the sloped cylinder 407 gradually decreases from top to bottom. The inner wall of the sloped cylinder 407 is fixedly connected to a spring 406. The supporting force generated by the deformation of the spring 406 provides a certain supporting force for the filter bag 23. When the weight of the sediment in the filter bag 23 continues to increase, the slide column 402 is continuously pressed to slide downward, so that the slide column 402 drives the sloped cylinder 407 to move downward, and the top end of the spring 406 is fixedly connected to the bottom of the perforated plate 405.

[0020] A groove block 409 is fixedly connected to the top of the orifice plate 405, and the groove block 409 is symmetrically installed on the top of the orifice plate 405. The outer surface of the groove block 409 is rotatably connected to the connecting plate 403. During the washing process of the inclined drum 407, the inclined plate 408 is pushed so that the connecting plate 403 drives the top clamping plate 401 to clamp the filter bag 23 inward, so that the outside of the filter bag 23 is subjected to pressure. The bottom end of the connecting plate 403 is fixedly connected to the inclined plate 408, and the top end of the connecting plate 403 is fixedly connected to the clamping plate 401. The end of the clamping plate 401 away from the connecting plate 403 is in contact with the outer surface of the filter bag 23, and the inner wall of the inclined plate 408 is in contact with the outer surface of the inclined drum 407.

[0021] When in use, the leachate sewage is passed into the tank body 11 through the water inlet pipe 15 in the frame body 1, and the sewage first passes through the screening mechanism 3, and the large pieces of debris and metal debris in the sewage are screened out by the screening mechanism 3, and then the screened sewage is filtered by the filtering mechanism 2, and the silt in the sewage is filtered out and retained in the filter bag 23. At the same time, during the filtering process, the filter bag 23 is supported by the bottom supporting mechanism 4, and the filtering mechanism 2 is cooperated to complete the filtering work of the leachate. The filtered sewage enters between the filter bag 23 and the tank body 11, and the sewage is discharged through the outlet pipe 14 fixed at the bottom of the tank body 11 to enter the next process.

[0022] When the leachate sewage passes through the screening mechanism 3, the leachate sewage is initially screened by the grid ring 34 on the inner wall of the screen cylinder 31, and large pieces of debris are blocked by the grid holes of the grid ring 34. Then the sewage passes through the grid holes of the grid ring 34. After passing through the grid holes, the leachate sewage flows through the surface of the magnetic column 36, and the metals present in the sewage are adsorbed by the magnetic adsorption of the magnetic column 36. After flowing through the magnetic column 36, the leachate sewage will be screened again by the sieve plate 37 to screen out small pieces of debris in the leachate sewage. The screened sewage will enter the filtering mechanism 2 to filter the sediment. While filtering, the curved plate 33 drives the arc plate 32 to unfold the filter bag 23.

[0023] When the filtered leachate sewage enters the filter mechanism 2, the sewage is filtered for sediment through the filter bag 23. During the filtering process, the filter bag 23 is pulled downward on all sides due to the impact of the sewage on the filter bag 23. During the pulling, the filter bag 23 is clamped and fixed during installation through the cooperation between the pressure ring 21 and the bottom ring 22. When the filter bag 23 is impacted and pulled, the bottom ring 22 is pulled downward together with the pressure ring 21 by the filter bag 23, so that the rubber ring 28 fixed on the inner wall of the pressure ring 21 slides with the outer surface of the screen cylinder 31. As the outer diameter of the bottom of the screen cylinder 31 gradually increases, The rubber ring 28 is gradually deformed and compressed during the downward movement, increasing the friction with the surface of the screen drum 31, thereby buffering the impact force on the filter bag 23. While buffering, the arc block 26 is connected through the elastic plate 25, and the arc plate 32 connected to the curved plate 33 cooperates. At the same time, the position of the arc block 26 is limited at the bottom by the rubber pad 38 below the arc block 26. During the downward movement of the pressure ring 21 and the bottom ring 22, the elastic plate 25 is compressed, causing the elastic plate 25 to be compressed and deformed. The filter bag 23 is compressed by the cooperation of the arc block 26 and the rubber pad 38, so that the downward movement speed of the filter bag 23 is limited.

[0024] As the filter bag 23 continuously filters the silt in the leachate sewage, the silt gradually accumulates in the filter bag 23, causing the silt to continuously accumulate at the bottom of the filter bag 23. When the filtering area of ​​the filter bag 23 gradually decreases, the bottom of the filter bag 23 is supported by the tray 410 in the bottom supporting mechanism 4. The supporting force generated by the deformation of the spring 406 provides a certain supporting force for the filter bag 23. When the weight of the silt in the filter bag 23 continues to increase, the sliding column 402 is continuously pressed to slide downward, so that the sliding column 402 drives the inclined cylinder 407 to move downward. In the process of the inclined cylinder 407 moving downward, the inclined plate 408 is pushed to enable the connecting plate 403 to drive the top clamping plate 401 to clamp the filter bag 23 inward, so that the outside of the filter bag 23 is subjected to pressure.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A biological treatment device for landfill leachate, characterized in that: include: A frame (1), the frame (1) being used to provide a place for filtering leachate, the frame (1) comprising a tank body (11), the top of the tank body (11) being fixedly connected to a water inlet pipe (15), the bottom of the tank body (11) being fixedly connected to a water outlet pipe (14), the bottom of the tank body (11) being fixedly connected to a collar (12), the bottom of the collar (12) being fixedly connected to a support leg (13), the support leg (13) being symmetrically mounted on the bottom of the collar (12); A screening mechanism (3), the top of the screening mechanism (3) being fixedly connected with a rivet; A filtering mechanism (2), the filtering mechanism (2) having a filter bag (23) for filtering sediment in the leachate; A bottom supporting mechanism (4), the bottom of the bottom supporting mechanism (4) being fixedly connected with a bolt (6); The screening mechanism (3) is fixedly mounted on the top of the inner wall of the tank body (11) in the frame body (1) by means of rivets (5); the inner wall of the filtering mechanism (2) is slidably connected to the outer surface of the screening mechanism (3); and the bottom supporting mechanism (4) is fixedly mounted on the bottom of the inner wall of the tank body (11) by means of bolts (6); The filtering mechanism (2) further comprises a pressure ring (21), the inner wall of the pressure ring (21) being fixedly connected to a rubber ring (28), the bottom of the pressure ring (21) being fixedly connected to a stud (24), the stud (24) being symmetrically arranged at the bottom of the pressure ring (21), the outer surface of the stud (24) being threadedly connected to a nut (27), the bottom of the nut (27) being rotatably connected to a bottom ring (22), the inner wall of the bottom ring (22) being provided with a warping ring, the bottom of the pressure ring (21) being provided with a clamping ring, and the pressure ring (21) being provided with a clamping ring. The clamping ring of the pressure ring (21) is matched with the warping ring of the bottom ring (22); the gap between the clamping ring of the pressure ring (21) and the warping ring of the bottom ring (22) is clamped with the surface of the filter bag (23); the bottom of the bottom ring (22) is fixedly connected with an elastic plate (25); the elastic plate (25) is an elastic metal plate; the elastic plate (25) is symmetrically installed at the bottom of the bottom ring (22); the bottom of the elastic plate (25) is fixedly connected with an arc block (26); the bottom of the arc block (26) is in contact with the outer surface of the filter bag (23).

2. The biological treatment equipment for landfill leachate according to claim 1, characterized in that: The screening mechanism (3) comprises a sieve cylinder (31), the outer diameter of the bottom of the sieve cylinder (31) gradually increases, the top of the sieve cylinder (31) is fixedly connected to the top of the inner wall of the tank body (11) via a rivet (5), the outer surface of the sieve cylinder (31) is slidably connected to the inner wall of the rubber ring (28), and the outer surface of the sieve cylinder (31) is fixedly connected to a rubber pad (38).

3. The biological treatment equipment for landfill leachate according to claim 2, characterized in that: A fixing ring (35) is fixedly connected to the inner wall of the sieve cylinder (31), a grating ring (34) is fixedly connected to the top of the fixing ring (35), an outer surface of the grating ring (34) is in contact with the inner wall of the sieve cylinder (31), and grating holes are provided on the outer surface of the grating ring (34).

4. The biological treatment equipment for landfill leachate according to claim 3, characterized in that: A magnetic column (36) is fixedly connected to the inner wall of the grid ring (34), and the magnetic column (36) is a magnetic metal rod. A sieve plate (37) is fixedly connected to the inner wall of the sieve cylinder (31), and sieve holes are symmetrically formed on the surface of the sieve plate (37), and the sieve holes of the sieve plate (37) are smaller than the grid holes of the grid ring (34).

5. The biological treatment equipment for landfill leachate according to claim 4, characterized in that: A curved plate (33) is fixedly connected to the inner wall of the sieve cylinder (31). The curved plate (33) is symmetrically installed on the inner wall of the sieve cylinder (31). The curved plate (33) is an elastic metal plate. An arc plate (32) is fixedly connected to the bottom end of the curved plate (33). The outer surface of the arc plate (32) is in contact with the inner wall of the filter bag (23).

6. The biological treatment equipment for landfill leachate according to claim 1, characterized in that: The bottom supporting mechanism (4) comprises a connecting ring (404), the connecting ring (404) being fixedly connected to the bottom of the inner wall of the tank body (11) via bolts (6), a supporting plate being symmetrically arranged on the top of the connecting ring (404), a perforated plate (405) being fixedly connected to the top of the supporting plate of the connecting ring (404), and a sliding hole being provided at the center of the surface of the perforated plate (405).

7. The biological treatment equipment for landfill leachate according to claim 6, characterized in that: A sliding column (402) is slidably connected to the sliding hole of the perforated plate (405), a tray (410) is fixedly connected to the top of the sliding column (402), the top of the tray (410) fits the bottom of the filter bag (23), and a sloped cylinder (407) is fixedly connected to the bottom of the sliding column (402).

8. The biological treatment equipment for landfill leachate according to claim 7, characterized in that: The bottom of the inclined cylinder (407) is symmetrically provided with drainage holes. The outer diameter of the inclined cylinder (407) gradually decreases from top to bottom. A spring (406) is fixedly connected to the inner wall of the inclined cylinder (407). The top end of the spring (406) is fixedly connected to the bottom of the perforated plate (405).

9. The biological treatment equipment for landfill leachate according to claim 8, characterized in that: A slot block (409) is fixedly connected to the top of the orifice plate (405). The slot block (409) is symmetrically installed on the top of the orifice plate (405). The outer surface of the slot block (409) is rotatably connected to a connecting plate (403). The bottom end of the connecting plate (403) is fixedly connected to an inclined plate (408).

10. The biological treatment equipment for landfill leachate according to claim 9, characterized in that: The top end of the connecting plate (403) is fixedly connected to a clamping plate (401), one end of the clamping plate (401) away from the connecting plate (403) is in contact with the outer surface of the filter bag (23), and the inner wall of the inclined plate (408) is in contact with the outer surface of the inclined cylinder (407).

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