Sewage treatment device for slowing down MBR (Membrane Bioreactor) membrane pollution

Abstract

The utility model relates to the technical field of MBRs (Membrane Bioreactors), in particular to a sewage treatment device for retarding MBR membrane pollution, which comprises a sewage pool and a swinging device, a moving seat capable of horizontally moving is arranged on the sewage pool, a mounting frame is arranged on the moving seat, and a plurality of groups of hollow fiber membrane main bodies are arranged on the mounting frame; the swing device comprises a supporting frame arranged on the movable base, a motor arranged on the supporting frame, a main shaft rotationally connected to the supporting frame, a rotating disc coaxially arranged on the main shaft, an eccentric shaft arranged on the rotating disc, a rotating rod rotationally connected with the eccentric shaft, two fixing blocks arranged on the supporting frame and guide sliding blocks slidably connected to the fixing blocks. The moving rod is arranged on the guide sliding block, the connecting shaft is connected to the rotating rod and the moving rod in an inserted mode, the two connecting frames are arranged on the moving rod, and the motor is in driving connection with the main shaft. The MBR membrane shaking device not only can play a good shaking role on an MBR membrane, but also can reduce the abrasion of driving equipment and ensure the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of membrane bioreactor technology, and in particular to a wastewater treatment device for mitigating MBR membrane fouling. Background Technology

[0002] MBR, or membrane bioreactor, is a novel wastewater treatment system that organically combines membrane separation technology with biological treatment technology. Through the membrane module, the MBR utilizes the highly efficient separation function of the membrane to completely retain microorganisms within the bioreactor, maintaining a high concentration of microorganisms within the system. This improves the overall removal efficiency of pollutants by the reactor and ensures good effluent quality.

[0003] Chinese Patent CN209242748U discloses a low-consumption, vibration-driven MBR device for nitrogen removal, comprising an MBR membrane tank and a non-aeration MBR membrane vibration device. The non-aeration MBR membrane vibration device is installed inside the MBR membrane tank and includes a support frame, a guide rail, an MBR membrane unit, and a vibration traction device. The guide rail is mounted on the support frame; the MBR membrane unit is mounted on the guide rail; the vibration traction device is connected to the MBR membrane unit and drives the MBR membrane unit to vibrate back and forth along the guide rail. This low-consumption, vibration-driven MBR device for nitrogen removal uses mechanical vibration without aeration, solving the foam problem caused by aeration in the MBR membrane tank and simultaneously addressing the total nitrogen removal problem caused by increased dissolved oxygen during aeration.

[0004] However, the above technical solution has the following shortcomings: the device shakes the MBR membrane by means of a traction device, which drives the hydraulic cylinder to make the MBR membrane host shake horizontally along the horizontal support guide rail. This method will greatly increase the wear and tear of the hydraulic cylinder and affect the service life of the equipment. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a wastewater treatment device that can mitigate MBR membrane fouling. This device can not only effectively vibrate the MBR membrane but also reduce wear on the drive equipment and ensure the service life of the equipment.

[0006] The present invention provides a wastewater treatment device for mitigating MBR membrane fouling, comprising a wastewater tank and a swinging device. A horizontally movable base is mounted on the wastewater tank, and a mounting frame is mounted on the movable base. Multiple hollow fiber membrane bodies are mounted on the mounting frame. The swinging device includes a support frame mounted on the movable base, a motor mounted on the support frame, a main shaft rotatably connected to the support frame, a turntable coaxially mounted on the main shaft, an eccentric shaft mounted on the turntable, a rotating rod rotatably connected to the eccentric shaft, two fixed blocks mounted on the support frame, guide sliders slidably connected to the fixed blocks, a moving rod mounted on the guide sliders, a connecting shaft inserted into the rotating rod and the moving rod, and two connecting frames mounted on the moving rod. The motor and the main shaft are driven together, and the connecting frames are mounted on the mounting frame.

[0007] Preferably, a support cylinder is coaxially arranged on the turntable, and the support cylinder is rotatably connected to the support frame.

[0008] Preferably, a limit ring is coaxially provided on the support cylinder, and the limit ring is rotatably disposed inside the support frame.

[0009] Preferably, the movable seat is provided with multiple rollers arranged in a linear array, and the rollers are rolled inside the sewage tank.

[0010] Preferably, the sewage tank is provided with a buffer assembly, which includes two fixed frames symmetrically distributed on the mounting frame and multiple springs linearly distributed inside the sewage tank. The two ends of the springs are respectively disposed on the sewage tank and the fixed frames, and the fixed frames are slidably connected to the sewage tank.

[0011] Preferably, the inside of the sewage tank is provided with multiple fixed rods, which are slidably connected to the fixing frame, and springs are sleeved on the fixed rods.

[0012] Preferably, the fixing frame is provided with two stabilizing blocks, and the inside of the sewage tank is provided with grooves for the stabilizing blocks to slide horizontally.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This invention utilizes a swing device to enable the mounting frame to move horizontally back and forth, causing the hollow fiber membrane body to vibrate continuously. This significantly reduces the accumulation of biochemical sludge on the membrane fiber surface, slows down the membrane fiber fouling rate, and the driving method provides stable transmission, low wear and tear, and ensures the service life of the equipment, making it highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the swing device of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the turntable of this utility model;

[0018] Figure 4 This is a partial cross-sectional schematic diagram of the sewage tank and fixing frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the movable base of this utility model.

[0020] Reference numerals in the attached drawings: 1. Sewage tank; 2. Movable seat; 3. Mounting frame; 4. Hollow fiber membrane body; 5. Support frame; 6. Motor; 7. Main shaft; 8. Turntable; 9. Eccentric shaft; 10. Rotating rod; 11. Connecting shaft; 12. Movable rod; 13. Fixed block; 14. Guide slider; 15. Connecting frame; 16. Fixed frame; 17. Stabilizing block; 18. Spring; 19. Fixed rod; 20. Support cylinder; 21. Limiting ring; 22. Roller. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-5 As shown, the wastewater treatment device for mitigating MBR membrane fouling proposed in this embodiment includes a wastewater tank 1 and a swing device; a horizontally movable seat 2 is provided on the wastewater tank 1, an installation frame 3 is provided on the movable seat 2, and multiple hollow fiber membrane bodies 4 are provided on the installation frame 3.

[0023] The swing device includes a support frame 5 mounted on the movable seat 2, a motor 6 mounted on the support frame 5, a main shaft 7 rotatably connected to the support frame 5, a turntable 8 coaxially mounted on the main shaft 7, an eccentric shaft 9 mounted on the turntable 8, a rotating rod 10 rotatably connected to the eccentric shaft 9, two fixed blocks 13 mounted on the support frame 5, a guide slider 14 slidably connected to the fixed blocks 13, a moving rod 12 mounted on the guide slider 14, a connecting shaft 11 inserted into the rotating rod 10 and the moving rod 12, and two connecting frames 15 mounted on the moving rod 12. The motor 6 and the main shaft 7 are drivenly connected, and the connecting frames 15 are mounted on the mounting frame 3.

[0024] A support cylinder 20 is coaxially mounted on the turntable 8. The support cylinder 20 is rotatably connected to the support frame 5. A limit ring 21 is coaxially mounted on the support cylinder 20. The limit ring 21 is rotatably mounted inside the support frame 5. The support cylinder 20 is used to support the stable rotation of the turntable 8, and the limit ring 21 is used to limit the position of the turntable 8 to ensure the stability of the transmission.

[0025] In this embodiment, when the hollow fiber membrane body 4 is clogged with pollutants, causing a decrease in membrane flux, the main shaft 7 can be driven to rotate by starting the motor 6. The main shaft 7 drives the turntable 8 to rotate, and the turntable 8 pulls one end of the rotating rod 10 to rotate reciprocally through the eccentric shaft 9. At the same time, the other end of the rotating rod 10 pulls the moving rod 12 to move. Due to the guiding effect of the fixed block 13 and the guide slider 14, the moving rod 12 will move horizontally back and forth. Then, the moving rod 12 drives the mounting frame 3 to move horizontally back and forth through the connecting frame 15, so that the hollow fiber membrane body 4 will shake continuously, which greatly reduces the accumulation of biochemical sludge on the surface of the membrane fibers, slows down the membrane fiber fouling rate, and effectively solves the foam problem. Moreover, this driving method has stable transmission, low wear and consumption, and ensures the service life of the equipment, and has good practicality.

[0026] Example 2

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, this embodiment proposes a wastewater treatment device for mitigating MBR membrane fouling. Compared to Embodiment 1, in this embodiment, the movable base 2 is provided with multiple linearly arrayed rollers 22, which are rotatably disposed inside the wastewater tank 1.

[0028] The sewage tank 1 is equipped with a buffer assembly, which includes two fixed frames 16 symmetrically distributed on the mounting frame 3 and multiple springs 18 linearly distributed inside the sewage tank 1. The two ends of the springs 18 are respectively set on the sewage tank 1 and the fixed frames 16, and the fixed frames 16 are slidably connected to the sewage tank 1.

[0029] The sewage tank 1 is equipped with multiple fixed rods 19 inside. The fixed rods 19 and the fixed frame 16 are slidably connected, and the spring 18 is sleeved on the fixed rods 19.

[0030] Two stabilizing blocks 17 are provided on the fixed frame 16, and the inside of the sewage tank 1 is provided with a groove for the stabilizing blocks 17 to slide horizontally.

[0031] In this embodiment, when the mounting frame 3 vibrates under the drive of the swing device, the movable seat 2 moves through the rollers 22 to reduce the friction between the movable seat 2 and the bottom of the sewage tank 1, thereby reducing resistance and energy consumption. At the same time, the mounting frame 3 also drives the fixed frame 16 to swing. The fixed frame 16, through the compression spring 18, can provide good protection for the equipment, preventing it from hitting the side wall of the sewage tank 1 during the reciprocating vibration. The fixed rod 19 guides the extension and contraction of the spring 18, preventing the spring 18 from twisting or bending and ensuring the service life of the spring 18. Meanwhile, the stabilizing block 17 not only guides and stabilizes the movement of the fixed frame 16, but also limits the stroke of the fixed frame 16, so that the fixed frame 16 always slides stably in the sewage tank 1.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A wastewater treatment device for mitigating MBR membrane fouling, characterized in that, include: A sewage tank (1) is provided with a horizontally movable seat (2), a mounting frame (3) is provided on the movable seat (2), and multiple hollow fiber membrane bodies (4) are provided on the mounting frame (3). The swing device includes a support frame (5) mounted on a movable seat (2), a motor (6) mounted on the support frame (5), a main shaft (7) rotatably connected to the support frame (5), a turntable (8) coaxially mounted on the main shaft (7), an eccentric shaft (9) mounted on the turntable (8), a rotating rod (10) rotatably connected to the eccentric shaft (9), two fixed blocks (13) mounted on the support frame (5), a guide slider (14) slidably connected to the fixed block (13), a moving rod (12) mounted on the guide slider (14), a connecting shaft (11) inserted into the rotating rod (10) and the moving rod (12), and two connecting frames (15) mounted on the moving rod (12). The motor (6) and the main shaft (7) are driven together, and the connecting frames (15) are mounted on the mounting frame (3).

2. The wastewater treatment device for mitigating MBR membrane fouling according to claim 1, characterized in that, A support cylinder (20) is coaxially mounted on the turntable (8), and the support cylinder (20) is rotatably connected to the support frame (5).

3. A wastewater treatment device for mitigating MBR membrane fouling according to claim 2, characterized in that, A limit ring (21) is coaxially provided on the support cylinder (20), and the limit ring (21) is rotatably located inside the support frame (5).

4. A wastewater treatment device for mitigating MBR membrane fouling according to claim 1, characterized in that, The movable seat (2) is provided with multiple linearly arrayed rollers (22), which are rolled inside the sewage tank (1).

5. A wastewater treatment device for mitigating MBR membrane fouling according to claim 1, characterized in that, The sewage tank (1) is equipped with a buffer assembly. The buffer assembly includes two fixed frames (16) symmetrically distributed on the mounting frame (3) and multiple springs (18) linearly distributed inside the sewage tank (1). The two ends of the springs (18) are respectively set on the sewage tank (1) and the fixed frames (16). The fixed frames (16) are slidably connected to the sewage tank (1).

6. A wastewater treatment device for mitigating MBR membrane fouling according to claim 5, characterized in that, The sewage tank (1) is equipped with multiple fixed rods (19), which are slidably connected to the fixed frame (16), and the spring (18) is sleeved on the fixed rod (19).

7. A wastewater treatment device for mitigating MBR membrane fouling according to claim 5, characterized in that, Two stabilizing blocks (17) are provided on the fixed frame (16), and the inside of the sewage tank (1) is provided with a groove for the stabilizing blocks (17) to slide horizontally.

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