Sewage treatment system and sewage treatment method combined with MBBR (Moving Bed Biofilm Reactor) filler

Abstract

The invention provides a sewage treatment system and a sewage treatment method combined with MBBR (Moving Bed Biofilm Reactor) filler, and belongs to the technical field of sewage treatment. The device comprises a water storage tank, a supporting rod, a supporting plate, a motor and two swinging mechanisms, the two ends of the supporting rod are fixedly connected to the surface of the water storage tank, the supporting plate is fixedly connected to the surface of the water storage tank, and the motor is fixedly connected to the surface of the supporting plate. And each swing mechanism comprises a second connecting rod, two control arms, a lever, two connecting plates, two stirring plates, two suspended fillers, two limiting grooves and a driving assembly, and the second connecting rods are connected with the two control arms, the two connecting plates and the two limiting grooves. The defects that in a traditional MBBR technology, filler is accumulated and distributed unevenly, and sludge at the bottom is difficult to clean are overcome, and the sewage treatment efficiency and the system stability are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a wastewater treatment system and method incorporating MBBR packing material. Background Technology

[0002] In the field of wastewater treatment, MBBR (Moving Bed Biofilm Reactor) technology has attracted widespread attention due to its high biological treatment capacity and low maintenance requirements. Traditional MBBR systems typically use specially designed suspended packing material with a density close to that of water, which is directly added to the reactor. Aeration or water flow keeps the packing material fluidized within the reactor. The packing material has a large specific surface area and suitable surface characteristics, providing a favorable attachment environment for microorganisms and forming a stable biofilm structure, thereby achieving efficient degradation of pollutants such as organic matter and ammonia nitrogen in wastewater.

[0003] This method demonstrates strong adaptability and treatment effectiveness in practical applications, particularly suitable for small and medium-sized wastewater treatment facilities and situations with significant water quality fluctuations. However, some problems have also emerged during operation. For example, because the packing material floats freely in the reactor, it is prone to localized accumulation or floating on the water surface, especially under conditions of uneven water flow or insufficient aeration. This disrupts the uniform distribution of the packing material, affects water flow channels and oxygen transfer efficiency, and consequently leads to a decrease in treatment capacity in some areas.

[0004] Therefore, it is necessary to provide an agricultural spray irrigation device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater treatment system and method incorporating MBBR packing material, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wastewater treatment system incorporating MBBR packing material, comprising:

[0008] Water storage tank;

[0009] A support rod, both ends of which are fixedly connected to the surface of the water storage tank;

[0010] A support plate, which is fixedly connected to the surface of the water storage tank;

[0011] The motor is fixedly connected to the surface of the support plate;

[0012] The swing mechanism comprises two sets, each set including a second connecting rod, a control arm, a lever, a connecting plate, a stirring plate, a suspended filler, a limiting groove, and a drive assembly. Each set includes two control arms, two connecting plates, and two limiting grooves. Multiple second connecting rods, stirring plates, and suspended fillers are provided. Two limiting grooves are formed on the surface of the water storage tank. Multiple second connecting rods are slidably connected to the inner walls of the two limiting grooves. Multiple stirring plates are slidably connected to the circumferential surfaces of the multiple second connecting rods. Multiple suspended fillers are fixedly connected to the surfaces of the multiple stirring plates. The lever is rotatably connected to the circumferential surface of the support rod. Two control arms are rotatably connected to both ends of the lever and rotatably connected to the circumferential surfaces of two of the second connecting rods. One end of each connecting plate is fixedly connected to the surface of two of the stabilizing blocks, and the other end of each connecting plate is fixedly connected to the surface of two other stabilizing blocks. The drive assembly is located on one side of the motor.

[0013] The snap-fit ​​assembly is provided in multiple sets, and the multiple sets of snap-fit ​​assemblies are respectively disposed at both ends of multiple stirring plates;

[0014] A cleaning assembly is disposed inside a water storage tank.

[0015] As a preferred embodiment of the present invention, each drive assembly includes a swing arm, a first connecting rod, and a connecting plate. One end of the swing arm is fixedly connected to the output end of the motor, one end of the first connecting rod is rotatably connected to one end of the swing arm, one end of the connecting plate is rotatably connected to the circumferential surface of the first connecting rod, and the other end of the connecting plate is rotatably connected to the circumferential surface of the second connecting rod.

[0016] As a preferred embodiment of the present invention, each of the multiple sets of snap-fit ​​components includes a snap-fit ​​plate and a snap-fit ​​groove. The snap-fit ​​groove is formed on the surface of the stirring plate, the snap-fit ​​plate is slidably connected to the inner wall of the snap-fit ​​groove, and the snap-fit ​​plate is fixedly connected to the surface of the second connecting rod.

[0017] In a preferred embodiment of the present invention, the cleaning assembly includes a handle, a push plate, a drain trough, a first thread, a push rod, a second thread, and a stop plate. The drain trough is formed on the surface of the water storage tank. The push plate is slidably connected to the inner wall of the drain trough. The stop plate is fixedly connected to the surface of the push plate. The push rod is slidably connected to the inner walls of the push plate and the stop plate. The first thread is formed on the surface of the push rod. The second thread is formed on the surface of the push rod. The handle is fixedly connected to one end of the push rod.

[0018] As a preferred embodiment of the present invention, a sealing ring is fitted onto the surface of the push plate.

[0019] As a preferred embodiment of the present invention, a plurality of stabilizing blocks are fixed to the circumferential surfaces of the plurality of second connecting rods, and the plurality of stabilizing blocks are slidably connected to the inner wall of the limiting groove.

[0020] As a preferred embodiment of the present invention, the surface of the handle is fixedly connected with a plurality of anti-slip strips.

[0021] As a preferred embodiment of the present invention, a water inlet pipe is fixedly connected to the surface of the water storage tank.

[0022] As a preferred embodiment of the present invention, a water outlet pipe is fixedly connected to the surface of the water storage tank.

[0023] As a preferred embodiment of the present invention, a filter screen is fixedly connected inside the water inlet pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention effectively solves the problem of low localized treatment efficiency caused by packing material accumulation or uneven distribution in traditional MBBR technology by using a swing mechanism to drive the suspended packing material to move up and down periodically. The reciprocating motion of the agitator plate breaks the limitation of the packing material's free floating, ensuring its uniform distribution in the water storage tank and avoiding the impact of packing material accumulation or floating on the water flow channel and oxygen transfer efficiency. At the same time, the linkage design of the lever and control arm causes the packing material on both sides to move in opposite directions, forming symmetrical agitation, further increasing the contact area between the packing material and the wastewater, and significantly enhancing the activity of the biofilm and the pollutant degradation capacity.

[0026] 2. The dynamic movement of the agitator not only optimizes the distribution of the packing material but also enhances the fluidity of the wastewater through mechanical agitation, indirectly improving aeration efficiency. The aeration ports at the bottom of the storage tank continuously supply oxygen, which, combined with the up-and-down movement of the agitator, promotes thorough mixing of wastewater and oxygen, accelerating the metabolic reactions of aerobic microorganisms. This synergistic effect of physical agitation and chemical aeration significantly improves the removal rate of pollutants such as organic matter and ammonia nitrogen, while avoiding the anoxic zones that may occur in traditional static packing systems, ensuring a highly efficient biochemical treatment environment throughout the reactor.

[0027] 3. This device actively cleans the sludge at the bottom of the water storage tank through a cleaning component, reducing equipment maintenance difficulty and operating costs. The sliding push plate scrapes away sediment, preventing blockages or reduced treatment efficiency caused by sludge accumulation. Simultaneously, the snap-fit ​​component design makes the agitator plate easy to disassemble, replace, or clean, extending the equipment's service life. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a first-view perspective perspective view of the present invention;

[0030] Figure 2 This is a second-view perspective perspective view of the present invention;

[0031] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 This is a partial schematic diagram of the present invention;

[0033] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0034] Figure 6 This is a partial exploded view of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0036] Figure 8 This is an exploded view of the snap-fit ​​assembly of the present invention.

[0037] In the diagram: 1. Water storage tank; 2. Support plate; 3. Motor; 4. Swing arm; 5. First connecting rod; 6. Connecting plate; 7. Second connecting rod; 8. Control arm; 9. Lever; 10. Support rod; 11. Stabilizing block; 12. Connecting plate; 13. Clip plate; 14. Clip groove; 15. Agitator plate; 16. Suspended packing; 17. Inlet pipe; 18. Outlet pipe; 19. Filter screen; 20. Limiting groove; 21. Handle; 22. Push plate; 23. Sewage trough; 24. First thread; 25. Push rod; 26. Second thread; 27. Support plate; 28. Anti-slip strip. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] Please see Figures 1-8 The present invention provides the following technical solutions:

[0041] A wastewater treatment system incorporating MBBR packing material, comprising:

[0042] Water storage tank 1;

[0043] Support rod 10, both ends of which are fixedly connected to the surface of water storage tank 1;

[0044] Support plate 2 is fixedly connected to the surface of water storage tank 1;

[0045] Motor 3 is fixedly connected to the surface of support plate 2;

[0046] The swing mechanism comprises two sets, each including a second connecting rod 7, a control arm 8, a lever 9, a connecting plate 12, a stirring plate 15, a suspended packing material 16, a limiting groove 20, and a drive assembly. Each set has two control arms 8, two connecting plates 12, and two limiting grooves 20. Each set has multiple second connecting rods 7, multiple stirring plates 15, and multiple suspended packing materials 16. Both limiting grooves 20 are located on the surface of the water storage tank 1. Multiple second connecting rods 7 are slidably connected to the inner walls of the two limiting grooves 20. Multiple stirring plates 15 are slidably connected to multiple second connecting rods 7. On the circumferential surface of the two connecting rods 7, multiple suspended packings 16 are fixedly connected to the surface of multiple stirring plates 15. The lever 9 is rotatably connected to the circumferential surface of the support rod 10. Two control arms 8 are rotatably connected to the two ends of the lever 9, and the two control arms 8 are rotatably connected to the circumferential surface of two of the second connecting rods 7. One end of the two connecting plates 12 is fixedly connected to the surface of two of the stabilizing blocks 11, and the other end of the two connecting plates 12 is fixedly connected to the surface of the other two stabilizing blocks 11. The drive assembly is located on one side of the motor 3.

[0047] The snap-fit ​​assembly has multiple sets, and the multiple sets of snap-fit ​​assemblies are respectively set at both ends of multiple stirring plates 15;

[0048] The cleaning component is located inside the water storage tank 1.

[0049] In a specific embodiment of the present invention, the device uses a motor 3 to drive a swing mechanism to dynamically agitate the suspended packing 16. The operation process is as follows: after starting the motor 3, its output end drives the swing arms 4 on both sides to swing synchronously. The swing arms 4 are linked to the connecting plate 6 through the first connecting rod 5, causing the connecting plate 6 to push the second connecting rod 7 to move up and down within the limiting groove 20. The agitation plate 15 on the surface of the second connecting rod 7 rises and falls accordingly, and the suspended packing 16 on the agitation plate 15 increases its contact area with the sewage due to the up and down movement. At the same time, the control arms 8 at both ends of the lever 9 move with the second connecting rod 7, and the lever 9 rotates around the support rod 10 as the fulcrum, causing the second connecting rod 7 in the limiting groove 20 on the other side to move synchronously in the opposite direction, forming a reciprocating agitation effect. This design achieves the periodic up and down movement of the suspended packing 16 through mechanical linkage, breaking the problem of uneven distribution caused by the free floating of traditional MBBR packing, and improving biofilm activity and pollutant degradation efficiency.

[0050] Please refer to the details. Figures 1-8Each drive assembly includes a swing arm 4, a first connecting rod 5, and a connecting plate 6. One end of the swing arm 4 is fixedly connected to the output end of the motor 3. One end of the first connecting rod 5 is rotatably connected to one end of the swing arm 4. One end of the connecting plate 6 is rotatably connected to the circumferential surface of the first connecting rod 5, and the other end of the connecting plate 6 is rotatably connected to the circumferential surface of the second connecting rod 7.

[0051] In this embodiment: During operation, after the motor 3 is started, it drives the swing arm 4 to rotate. The end of the swing arm 4 converts the rotational motion into horizontal swing through the first connecting rod 5. The connecting plate 6, as an intermediate transmission component, transmits the swing to the second connecting rod 7, so that the second connecting rod 7 slides back and forth along the direction of the limiting groove 20.

[0052] Please refer to the details. Figures 1-8 Each of the multiple snap-fit ​​components includes a snap-fit ​​plate 13 and a snap-fit ​​groove 14. The snap-fit ​​groove 14 is formed on the surface of the stirring plate 15. The snap-fit ​​plate 13 is slidably connected to the inner wall of the snap-fit ​​groove 14 and is fixedly connected to the surface of the second connecting rod 7.

[0053] In this embodiment, when the agitator plate 15 needs to be replaced or cleaned, the snap-fit ​​plate 13 can be manually slid out of the snap-fit ​​groove 14 on the surface of the agitator plate 15 to release the fixed connection between the agitator plate 15 and the second connecting rod 7. This design replaces the traditional screw or welding method with a snap-fit ​​structure, avoiding component damage caused by complex disassembly tools or destructive operations, and significantly reducing maintenance difficulty and time costs.

[0054] Please refer to the details. Figures 1-8 The cleaning assembly includes a handle 21, a push plate 22, a drain trough 23, a first thread 24, a push rod 25, a second thread 26, and a stop plate 27. The drain trough 23 is formed on the surface of the water storage tank 1. The push plate 22 is slidably connected to the inner wall of the drain trough 23. The stop plate 27 is fixedly connected to the surface of the push plate 22. The push rod 25 is slidably connected to the inner walls of the push plate 22 and the stop plate 27. The first thread 24 is formed on the surface of the push rod 25. The second thread 26 is formed on the surface of the push rod 25. The handle 21 is fixedly connected to one end of the push rod 25.

[0055] In this embodiment: when silt accumulates at the bottom of the water storage tank 1, first rotate the push rod 25 by the handle 21 to disengage the push plate 22 from the second thread 26 on the surface of the push rod 25. Then pull the push rod 25 outward until the push plate 22 contacts the first thread 24 on the surface of the push rod 25. At this time, the push plate 22 can scrape off the silt at the bottom. During installation, the push plate 22 must first be disengaged from the first thread 24. Pull the push rod 25 outward until the push plate 22 is inserted into the drain trough 23. The friction between the drain trough 23 and the push rod 25 is greater than the friction between the push plate 22 and the smooth section of the push rod 25, ensuring that the push plate 22 remains stably in the drain trough 23 when the push rod 25 is inserted. Finally, rotate the push rod 25 to reset the push plate 22 to the position of the second thread 26. At this time, the abutment plate 27 is pressed against the inner wall of the water storage tank 1 to prevent sewage leakage.

[0056] Please refer to the details. Figures 1-8 A sealing ring is fitted on the surface of the push plate 22.

[0057] In this embodiment, when the push plate 22 slides along the drain trough 23, the sealing ring fits tightly against the inner wall of the drain trough 23 to prevent sewage from leaking into the external environment.

[0058] Please refer to the details. Figures 1-8 Multiple stabilizing blocks 11 are fixed to the circumferential surfaces of multiple second connecting rods 7, and the multiple stabilizing blocks 11 are slidably connected to the inner wall of the limiting groove 20.

[0059] In this embodiment: During operation, when the second connecting rod 7 slides in the limiting groove 20, the stabilizing block 11 is always in contact with the inner wall of the limiting groove 20 to prevent the second connecting rod 7 from deflecting or getting stuck due to the impact of water flow.

[0060] Please refer to the details. Figures 1-8 Multiple anti-slip strips 28 are fixedly connected to the surface of the handle 21.

[0061] In this embodiment: When the user rotates the handle 21 during operation, the anti-slip strip 28 can effectively prevent the fingers from slipping, especially in a humid environment, ensuring the accuracy of the adjustment action of the push rod 25.

[0062] Please refer to the details. Figures 1-8 A water inlet pipe 17 is fixedly connected to the surface of the water storage tank 1.

[0063] In this embodiment, the inlet pipe 17 is located at the upper end of the water storage tank 1, and the sewage enters the water storage tank 1 from the inlet pipe 17 to prevent backflow.

[0064] Please refer to the details. Figures 1-8 A water outlet pipe 18 is fixedly connected to the surface of the water storage tank 1.

[0065] In this embodiment, the water outlet pipe 18 is connected to the bottom of the water storage tank 1 to ensure that the treated clean water is discharged smoothly.

[0066] Please refer to the details. Figures 1-8 A filter screen 19 is fixedly connected inside the water inlet pipe 17.

[0067] In this embodiment, the filter screen 19 achieves long-term interception by being fixed to the inner wall of the water inlet pipe 17. During operation, the pore size design of the filter screen 19 takes into account both water flow and impurity filtration effect. Regular cleaning of the filter screen 19 can restore the water flow capacity.

[0068] The working principle and usage of this invention: This device uses a motor 3 to drive a swing mechanism to achieve dynamic agitation and uniform distribution of the suspended packing 16. The operation process is as follows: After starting the motor 3, the swing arm 4 drives the connecting plate 6 to make the second connecting rod 7 slide back and forth in the limiting groove 20. The stirring plate 15 rises and falls accordingly, pushing the suspended packing 16 to move up and down periodically, breaking the problem of accumulation or uneven distribution caused by the free floating of traditional MBBR packing. At the same time, the lever 9 and the control arm 8 are linked to make the stirring plates 15 in the limiting grooves 20 on both sides move in opposite directions, forming symmetrical agitation and enhancing the contact efficiency between the biofilm and the sewage. When sludge accumulates at the bottom, the push rod 25 and the push plate 22 are linked by rotating the handle 21 to scrape off the sludge along the sewage discharge trough 23 to prevent blockage. The bottom of the water storage tank 1 is equipped with an aeration port, which further enhances the activity of microorganisms by continuously supplying oxygen, ensuring efficient degradation of pollutants. This design optimizes the packing distribution through mechanical agitation and combines it with an active cleaning function, solving the drawbacks of packing accumulation, uneven distribution, and difficulty in cleaning bottom sludge in traditional MBBR technology, and significantly improving wastewater treatment efficiency and system stability.

[0069] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wastewater treatment system incorporating MBBR packing material, characterized in that: include: Water storage tank (1); Support rod (10), both ends of which are fixedly connected to the surface of water storage tank (1); Support plate (2), which is fixedly connected to the surface of water storage tank (1); Motor (3), which is fixedly connected to the surface of support plate (2); The swing mechanism comprises two sets, each set including a second connecting rod (7), a control arm (8), a lever (9), a connecting plate (12), a stirring plate (15), a suspended filler (16), a limiting groove (20), and a drive assembly. Two control arms (8), two connecting plates (12), and two limiting grooves (20) are provided. Multiple second connecting rods (7), multiple stirring plates (15), and multiple suspended fillers (16) are provided. Both limiting grooves (20) are located on the surface of the water storage tank (1). Multiple second connecting rods (7) are slidably connected to the inner walls of the two limiting grooves (20). Multiple stirring plates (15) are slidably connected to the inner walls of the two limiting grooves (20). The multiple second connecting rods (7) are connected to the circumferential surface of the multiple suspended fillers (16), and the multiple agitators (15) are fixedly connected to the surface of the multiple agitators (15). The lever (9) is rotatably connected to the circumferential surface of the support rod (10). The two control arms (8) are rotatably connected to the two ends of the lever (9), and the two control arms (8) are rotatably connected to the circumferential surface of two of the second connecting rods (7). One end of the two connecting plates (12) is fixedly connected to the surface of two of the stabilizers (11), and the other end of the two connecting plates (12) is fixedly connected to the surface of the other two stabilizers (11). The drive assembly is located on one side of the motor (3). The snap-fit ​​assembly is provided in multiple sets, and the multiple sets of snap-fit ​​assemblies are respectively disposed at both ends of multiple stirring plates (15); A cleaning assembly is disposed in a water storage tank (1).

2. The wastewater treatment system combined with MBBR packing material according to claim 1, characterized in that: Each drive assembly includes a swing arm (4), a first connecting rod (5), and a connecting plate (6). One end of the swing arm (4) is fixedly connected to the output end of the motor (3). One end of the first connecting rod (5) is rotatably connected to one end of the swing arm (4). One end of the connecting plate (6) is rotatably connected to the circumferential surface of the first connecting rod (5), and the other end of the connecting plate (6) is rotatably connected to the circumferential surface of the second connecting rod (7).

3. A wastewater treatment system incorporating MBBR packing material according to claim 2, characterized in that: Each of the multiple sets of the snap-fit ​​components includes a snap-fit ​​plate (13) and a snap-fit ​​groove (14). The snap-fit ​​groove (14) is opened on the surface of the stirring plate (15). The snap-fit ​​plate (13) is slidably connected to the inner wall of the snap-fit ​​groove (14) and the snap-fit ​​plate (13) is fixedly connected to the surface of the second connecting rod (7).

4. A wastewater treatment system incorporating MBBR packing material according to claim 3, characterized in that: The cleaning assembly includes a handle (21), a push plate (22), a drain trough (23), a first thread (24), a push rod (25), a second thread (26), and a stop plate (27). The drain trough (23) is located on the surface of the water storage tank (1). The push plate (22) is slidably connected to the inner wall of the drain trough (23). The stop plate (27) is fixedly connected to the surface of the push plate (22). The push rod (25) is slidably connected to the inner walls of the push plate (22) and the stop plate (27). The first thread (24) is located on the surface of the push rod (25). The second thread (26) is located on the surface of the push rod (25). The handle (21) is fixedly connected to one end of the push rod (25).

5. A wastewater treatment system combined with MBBR packing material according to claim 4, characterized in that: A sealing ring is fitted on the surface of the push plate (22).

6. A wastewater treatment system incorporating MBBR packing material according to claim 5, characterized in that: Multiple stabilizing blocks (11) are fixed to the circumferential surfaces of the multiple second connecting rods (7), and the multiple stabilizing blocks (11) are slidably connected to the inner wall of the limiting groove (20).

7. A wastewater treatment system incorporating MBBR packing material according to claim 6, characterized in that: Multiple anti-slip strips (28) are fixedly connected to the surface of the handle (21).

8. A wastewater treatment system incorporating MBBR packing material according to claim 7, characterized in that: A water inlet pipe (17) is fixedly connected to the surface of the water storage tank (1).

9. A wastewater treatment system incorporating MBBR packing material according to claim 8, characterized in that: A water outlet pipe (18) is fixedly connected to the surface of the water storage tank (1).

10. A wastewater treatment system incorporating MBBR packing material according to claim 9, characterized in that: A filter screen (19) is fixedly connected inside the water inlet pipe (17).

Images