An intermittent aeration MBR reactor

Abstract

This utility model provides an intermittent aeration MBR reactor, relating to the technical field of aeration devices. The intermittent aeration MBR reactor includes an aeration tank containing a horizontal pipe. Multiple aeration pipes are connected to the upper end of the horizontal pipe. Each aeration pipe contains a self-sealing assembly. The self-sealing assembly includes a fixing ring fixedly connected to the inner wall of the aeration pipe. A sealing block is slidably connected within the fixing ring. A circular block is fixedly connected to the upper end of the sealing block. The circular block is elastically connected to the adjacent side of the fixing ring via multiple springs. Multiple vertical rods are fixedly connected to the lower end of the circular block, and all vertical rods penetrate the fixing ring. The intermittent aeration MBR reactor provided by this utility model has the advantages of compact structure, strong self-cleaning ability, and flexible adjustment.

Description

Technical Field

[0001] This utility model relates to the field of aeration device technology, and in particular to an intermittent aeration MBR reactor. Background Technology

[0002] Membrane bioreactors (MBRs), as a highly efficient wastewater treatment technology, combine membrane separation technology with biological treatment processes to achieve efficient sludge-water separation. They offer significant advantages such as stable effluent quality and low sludge production, and are widely used in municipal wastewater and industrial wastewater treatment. To further improve treatment efficiency and reduce energy consumption, intermittent aeration technology has been introduced into MBR systems. This technology reduces aeration energy consumption while periodically controlling aeration time to meet the metabolic needs of microorganisms, and utilizes the non-aeration phase to promote sludge sedimentation, thereby enhancing nitrogen and phosphorus removal.

[0003] However, existing intermittent aeration MBR reactors still face numerous technical bottlenecks. On the one hand, traditional aeration devices cannot effectively prevent sludge backflow into the aeration pipeline during the aeration shutdown phase, leading to pipeline blockage and affecting aeration uniformity and equipment lifespan. On the other hand, insufficient water flow disturbance during intermittent aeration easily causes sludge deposition on the membrane module surface, accelerating membrane fouling and reducing membrane flux. Furthermore, the fixed height of the aeration device makes it difficult to flexibly adjust the aeration position according to changes in water quality and quantity, affecting treatment efficiency and operational stability.

[0004] Therefore, it is necessary to provide an intermittent aeration MBR reactor to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an intermittent aeration MBR reactor.

[0006] This utility model provides an intermittent aeration MBR reactor comprising: an aeration tank, wherein a horizontal pipe is provided in the aeration tank, and multiple aeration pipes are connected to the upper end of the horizontal pipes. Each aeration pipe is provided with a self-sealing component, wherein the self-sealing component includes a fixing ring fixedly connected to the inner wall of the aeration pipe, a sealing block being slidably connected to the fixing ring, a circular block being fixedly connected to the upper end of the sealing block, the circular block being elastically connected to the adjacent side of the fixing ring by multiple springs, and multiple vertical rods being fixedly connected to the lower end of the circular block, all of which penetrate the fixing ring.

[0007] Preferably, the upper end of the horizontal tube is provided with a plurality of flow-disrupting components. The flow-disrupting components include two vertical plates fixedly connected to the upper end of the horizontal tube. The adjacent sides of the two vertical plates are rotatably connected to a rotating shaft. The outer wall of the rotating shaft is fixedly connected with a plurality of impellers.

[0008] Preferably, the system further includes a lifting assembly, which includes lifting slots disposed on the left and right sides of the aeration tank. Each of the two lifting slots has a slider slidably connected to it. The two ends of the horizontal tube are fixedly connected to the adjacent sides of the two sliders. The inner top and inner bottom of the lifting slot on the right side are rotatably connected to a lead screw. The lead screw passes through the slider on the right side and is threadedly connected to the slider on the right side. A drive motor is installed at the upper end of the aeration tank, and the end of the output shaft of the drive motor is fixedly connected to the upper end of the lead screw.

[0009] Preferably, the inner top and inner bottom of the lifting groove located on the left side are fixedly connected to a guide rod, the guide rod passes through the slider, and the slider is slidably connected to the guide rod.

[0010] Preferably, a limiting block is fixedly connected to the lower end of the vertical rod, the diameter of the limiting block is larger than the diameter of the through hole of the vertical rod on the fixing ring, and the length of the vertical rod is greater than the sum of the heights of the sealing block and the fixing ring.

[0011] Preferably, the radius of the circular block is smaller than the inner diameter of the aeration pipe.

[0012] Preferably, the drive motor is a servo motor, and the surface of the impeller is provided with a wear-resistant coating.

[0013] Compared with related technologies, the intermittent aeration MBR reactor provided by this utility model has the following beneficial effects:

[0014] 1. This utility model provides an intermittent aeration MBR reactor. By setting a self-sealing component in the aeration pipe, and using the cooperation of spring and sealing block, it can automatically open during aeration and quickly close when aeration stops, effectively preventing sludge backflow and clogging of the aeration pipe, and ensuring the long-term stable operation of the aeration system.

[0015] 2. This utility model provides an intermittent aeration MBR reactor, which adds a turbulence component to the horizontal tube. The impeller rotates under the drive of the aeration airflow, generating strong water flow turbulence, enhancing the cross-flow effect on the membrane module surface, significantly reducing the risk of membrane fouling, and improving wastewater treatment efficiency.

[0016] 3. This utility model provides an intermittent aeration MBR reactor equipped with a lifting component. Through a drive motor and screw transmission, the height of the horizontal pipe and aeration pipe can be flexibly adjusted to adapt to the aeration requirements under different working conditions, achieve precise aeration, and further optimize energy consumption and treatment effect. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of an intermittent aeration MBR reactor provided by this utility model;

[0018] Figure 2 for Figure 1 A structural schematic diagram from another perspective is shown;

[0019] Figure 3 This is a half-sectional view of the aeration pipe.

[0020] The following are the labels in the diagram: 1. Aeration tank; 2. Horizontal pipe; 3. Aeration pipe; 4. Vertical plate; 5. Rotating shaft; 6. Impeller; 7. Sliding block; 8. Lead screw; 9. Drive motor; 10. Lifting trough; 11. Guide rod; 12. Fixing ring; 13. Sealing block; 14. Circular block; 15. Spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1 to 3 An intermittent aeration MBR reactor includes: an aeration tank 1, a horizontal pipe 2 inside the aeration tank 1, and multiple aeration pipes 3 connected to the upper end of the horizontal pipe 2. Each aeration pipe 3 is equipped with a self-sealing component, which includes a fixing ring 12 fixedly connected to the inner wall of the aeration pipe 3. A sealing block 13 is slidably connected inside the fixing ring 12. A circular block 14 is fixedly connected to the upper end of the sealing block 13. The circular block 14 is elastically connected to the adjacent side of the fixing ring 12 by multiple springs 15. Multiple vertical rods are fixedly connected to the lower end of the circular block 14. The multiple vertical rods all pass through the fixing ring 12. A limiting block is fixedly connected to the lower end of the vertical rod. The diameter of the limiting block is larger than the diameter of the through hole of the vertical rod on the fixing ring 12. The length of the vertical rod is greater than the sum of the heights of the sealing block 13 and the fixing ring 12. The radius of the circular block 14 is smaller than the inner diameter of the aeration pipe 3.

[0023] It should be noted that the design of the self-sealing component, through the elastic reset action of the spring 15, ensures that the sealing block 13 is tightly fitted to the fixing ring 12 during the aeration stop phase. This effectively prevents sludge in the aeration tank 1 from flowing back into the aeration pipe 3, avoiding pipe blockage and extending the service life of the equipment. The design of the vertical rod and the limiting block at its lower end provides precise guidance for the sliding of the sealing block 13, preventing it from shifting during movement and affecting the sealing effect. Furthermore, the limiting block prevents the sealing block 13 from detaching from the fixing ring 12, ensuring stable operation of the self-sealing component. The design of the circular block 14 having a radius smaller than the inner diameter of the aeration pipe 3 ensures that the airflow can smoothly push the circular block 14 and the sealing block 13 upwards during aeration, allowing the aeration pipe 3 to open quickly and achieve efficient aeration.

[0024] The upper end of the horizontal tube 2 is provided with multiple turbulence components. The turbulence components include two vertical plates 4 fixedly connected to the upper end of the horizontal tube 2. The adjacent sides of the two vertical plates 4 are rotatably connected to a rotating shaft 5. Multiple impellers 6 are fixedly connected to the outer wall of the rotating shaft 5. The drive motor 9 is a servo motor. The surface of the impeller 6 is provided with a wear-resistant coating.

[0025] It should be noted that the turbulence-inducing component utilizes the airflow generated by aeration to drive the impeller 6 to rotate around the shaft 5, creating strong water flow turbulence within the aeration tank 1. This water flow turbulence significantly enhances the crossflow effect on the membrane module surface, effectively reducing sludge deposition on the membrane surface, lowering the risk of membrane fouling, and thus improving membrane flux and wastewater treatment efficiency. Using a servo motor as the drive motor 9 allows for precise control of the impeller 6's rotational speed, flexibly adjusting the intensity of the water flow turbulence according to actual treatment needs. The wear-resistant coating on the impeller 6 surface is made of high-strength wear-resistant material, effectively resisting the erosion and wear of high-speed water flow and sludge particles during aeration, extending the impeller 6's service life, reducing equipment maintenance frequency, and lowering maintenance costs.

[0026] The system also includes a lifting assembly, which consists of lifting slots 10 located on the left and right sides of the aeration tank 1. Each of the two lifting slots 10 has a slider 7 slidably connected to it. The two ends of the horizontal tube 2 are fixedly connected to the adjacent sides of the two sliders 7. The inner top and inner bottom of the lifting slot 10 on the right side are rotatably connected to a lead screw 8, which passes through the slider 7 on the right side and is threadedly connected to it. A drive motor 9 is installed at the upper end of the aeration tank 1, and the output shaft of the drive motor 9 is fixedly connected to the upper end of the lead screw 8. The inner top and inner bottom of the lifting slot 10 on the left side are fixedly connected to a guide rod 11, which passes through the slider 7 and is slidably connected to it.

[0027] It should be noted that the lifting assembly uses a drive motor 9 to rotate a lead screw 8, and the threaded transmission between the lead screw 8 and the slider 7 enables the horizontal pipe 2 and the aeration pipe 3 to move up and down. This design allows for flexible adjustment of the aeration position and depth according to different water quality, water volume, and treatment process requirements, resulting in more uniform and efficient aeration, improved oxygen utilization, and reduced energy consumption. The guide rod 11 inside the left lifting groove 10 provides stable guidance for the slider 7, ensuring that the horizontal pipe 2 does not tilt or deviate during the lifting process, thus ensuring stable and reliable aeration performance of the aeration pipe 3.

[0028] The working principle of the intermittent aeration MBR reactor provided by this utility model is as follows: When the system enters the aeration stage, air is transported to the aeration pipe 3 through the horizontal pipe 2. The pressure generated by the airflow pushes the sealing block 13 in the self-sealing component to move upward against the elastic force of the spring 15. The circular block 14 drives the vertical rod to rise synchronously, and the aeration pipe 3 opens to perform aeration. At the same time, the airflow generated by aeration drives the impeller 6 of the turbulence component to rotate. The rotating shaft 5 drives the impeller 6 to stir the water, forming a strong water flow disturbance in the aeration tank 1, which enhances the cross-flow effect on the surface of the membrane component and reduces the deposition of sludge on the membrane surface.

[0029] When the aeration stage ends and the aeration stop stage begins, the sealing block 13 in the self-sealing component moves down under the reset action of the spring 15, and the sealing block 13 re-fits the fixing ring 12, realizing the automatic sealing of the aeration pipe 3 and preventing sludge backflow into the pipeline. During the aeration stop period, if it is necessary to adjust the aeration position, the drive motor 9 can be started. The drive motor 9 drives the lead screw 8 to rotate, and the slider 7, which is threadedly connected to the lead screw 8, moves up and down along the lifting groove 10, thereby driving the horizontal pipe 2 and the aeration pipe 3 to rise and fall as a whole to adapt to the aeration requirements under different working conditions.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An intermittent aeration MBR reactor, characterized in that, include: An aeration tank (1) is provided with a horizontal pipe (2) inside the aeration tank (1). The upper end of the horizontal pipe (2) is connected to multiple aeration pipes (3). Each aeration pipe (3) is provided with a self-sealing component. The self-sealing component includes a fixing ring (12) fixedly connected to the inner wall of the aeration pipe (3). A sealing block (13) is slidably connected inside the fixing ring (12). A circular block (14) is fixedly connected to the upper end of the sealing block (13). The circular block (14) and the adjacent side of the fixing ring (12) are elastically connected by multiple springs (15). Multiple vertical rods are fixedly connected to the lower end of the circular block (14). All of the multiple vertical rods pass through the fixing ring (12).

2. The intermittent aeration MBR reactor according to claim 1, characterized in that, The upper end of the horizontal tube (2) is provided with multiple flow-disrupting components. The flow-disrupting components include two vertical plates (4) fixedly connected to the upper end of the horizontal tube (2). The adjacent sides of the two vertical plates (4) are rotatably connected to a rotating shaft (5). Multiple impellers (6) are fixedly connected to the outer wall of the rotating shaft (5).

3. The intermittent aeration MBR reactor according to claim 2, characterized in that, It also includes a lifting assembly, which includes lifting slots (10) set on the left and right sides of the aeration tank (1). Slider (7) is slidably connected in both lifting slots (10). The two ends of the horizontal tube (2) are fixedly connected to the adjacent sides of the two sliders (7). The inner top and inner bottom of the lifting slot (10) on the right side are rotatably connected to a screw (8). The screw (8) passes through the slider (7) on the right side. The screw (8) is threadedly connected to the slider (7) on the right side. A drive motor (9) is installed at the upper end of the aeration tank (1). The output shaft end of the drive motor (9) is fixedly connected to the upper end of the screw (8).

4. The intermittent aeration MBR reactor according to claim 3, characterized in that, The inner top and inner bottom of the lifting groove (10) located on the left side are fixedly connected to a guide rod (11), the guide rod (11) passes through the slider (7), and the slider (7) is slidably connected to the guide rod (11).

5. The intermittent aeration MBR reactor according to claim 1, characterized in that, The lower end of the vertical rod is fixedly connected to a limiting block. The diameter of the limiting block is greater than the diameter of the through hole of the vertical rod on the fixing ring (12). The length of the vertical rod is greater than the sum of the heights of the sealing block (13) and the fixing ring (12).

6. The intermittent aeration MBR reactor according to claim 1, characterized in that, The radius of the circular block (14) is smaller than the inner diameter of the aeration pipe (3).

7. The intermittent aeration MBR reactor according to claim 3, characterized in that, The drive motor (9) is a servo motor, and the surface of the impeller (6) is provided with a wear-resistant coating.

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