Membrane biological reaction equipment for composite alternate aeration
By adopting a combined technology of composite alternating aeration and rapid installation and disassembly devices in sewage treatment equipment, the problems of membrane module damage, low oxygen utilization and inconvenient maintenance in existing equipment are solved, and efficient cleaning and low energy consumption sewage treatment effects are achieved.
Patent Information
- Application Number
- CN202422035389.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In existing sewage treatment equipment, scratching devices can easily damage the membrane components, and cleaning chemicals can easily damage the membrane. Low oxygen utilization rate leads to high energy consumption and inconvenient equipment maintenance.
The membrane bioreaction equipment adopts composite alternating aeration, through the combination of a cyclone shear aerator and an EPDM tube aerator, an alternating aeration method of large and small bubbles is adopted, combined with the rapid installation and disassembly device design, to achieve efficient cleaning and maintenance.
It significantly improves the cleaning effect of sludge attached to the membrane surface, reduces unit aeration energy consumption, extends the service life of the membrane, and simplifies the maintenance and maintenance costs of equipment.
Smart Images
Figure CN223047348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a membrane bioreactor with composite alternating aeration. Background Art
[0002] With the acceleration of urbanization and the expansion of industrialization, the discharge of domestic sewage and industrial wastewater has increased significantly, leading to the aggravation of water pollution. Untreated sewage contains organic matter, nitrogen compounds, phosphates, heavy metals and other harmful substances, posing a serious threat to the environment. In order to protect water resources and the ecosystem, sewage must be treated to meet the discharge standards. Sewage treatment methods can be divided into physical methods, chemical methods, biological methods, etc. Among them, the biological method relies on the activities of microorganisms to degrade and remove organic matter and pollutants in sewage, which is a key link in the sewage treatment process.
[0003] A membrane bioreactor is a common sewage biological treatment device. This device integrates biological reaction and membrane separation in the same system, using the membrane as a solid-liquid separation device to completely separate solid particles and microorganisms in the wastewater. As the sewage treatment process progresses, pollutants such as microorganisms, colloids, particulate matter and organic matter may adhere to the membrane surface, reducing the membrane flux and efficiency. In order to make the membrane work properly, it must be cleaned regularly.
[0004] In the prior art, the cleaning devices installed inside and outside the filter membrane group have a complex structure and are not easy to operate and maintain. The external two-way scraping device is also easy to damage the membrane module, affecting sewage treatment, and the sewage treatment effect is poor; using chemical agents to clean the membrane module is easy to damage the membrane module and affect the filtration effect of the membrane; moreover, the utilization rate of oxygen during equipment aeration is low, resulting in high energy consumption of the equipment, and the membrane module is not convenient to disassemble and difficult to maintain and replace. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a membrane bioreactor with composite alternating aeration, aiming to improve the problems that the scraping device is easy to damage the membrane module, affecting sewage treatment, using chemical agents for cleaning is easy to damage the membrane module, and the utilization rate of oxygen is low, resulting in high energy consumption of the equipment.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A membrane bioreactor device with compound alternating aeration, comprising a housing and a fixing sleeve. The inner wall of the housing is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is rotatably connected with a clamping block, the upper surface of the clamping block is provided with a pressing block, the inner wall of the housing is fixedly connected with a limiting spring, the top end of the limiting spring is fixedly connected with a top block, the lower surface of the top block is fixedly connected with a limiting rod, the outer wall of the housing is rotatably connected with a cover plate, the inner wall of the cover plate is provided with a first spring, the top end of the first spring is fixedly connected with a button, the bottom end of the first spring is fixedly connected with a first pressing rod, the lower surface of the cover plate is fixedly connected with a clamping rod, the inner wall of the fixing sleeve is slidably connected with an EPDM tube aerator, the inner wall of the fixing sleeve is slidably connected with a swirl shear aerator, and the inner wall of the housing is provided with an installation component for quickly installing a filter element.
[0008] Preferably, the installation component includes a sliding frame, the outer wall of the sliding frame is slidably connected to the inner wall of the housing, and the inner wall of the sliding frame is slidably connected with a membrane component.
[0009] Preferably, the outer wall of the limiting rod is slidably connected to the inner wall of the pressing block, the outer wall of the clamping block is rotatably connected to the inner wall of the housing, the upper surface of the first pressing rod is fixedly connected to the inner wall of the button, and the outer wall of the clamping block is slidably connected to the inner wall of the clamping rod.
[0010] Preferably, the lower surface of the housing is fixedly connected with a reaction tank, the lower surface of the fixing sleeve is fixedly connected to the inner wall of the reaction tank, and the outer wall of the fixing sleeve is fixedly connected with a clamping sleeve.
[0011] Preferably, the inner wall of the clamping sleeve is fixedly connected with a first clamping plate, the inner wall of the first clamping plate is slidably connected with a second pressing rod, and the left outer wall of the second pressing rod is fixedly connected with a locking sleeve.
[0012] Preferably, the outer wall of the locking sleeve is slidably connected to the inner wall of the clamping sleeve, the left outer wall of the locking sleeve is fixedly connected with a second spring, and the other end of the second spring is fixedly connected to the left inner wall of the clamping sleeve.
[0013] Preferably, the inner wall of the locking sleeve is fixedly connected with an L-shaped clamping plate, and the outer wall of the L-shaped clamping plate is fixedly connected with a third spring.
[0014] Preferably, the right outer wall of the third spring is fixedly connected with a separating rod, the outer wall of the separating rod is slidably connected to the inner wall of the L-shaped clamping plate, the outer wall of the L-shaped clamping plate is slidably connected to the inner wall of the clamping sleeve, the outer wall of the locking sleeve is slidably connected to the inner walls of the fixing sleeve and the EPDM tube aerator, and the outer wall of the locking sleeve is slidably connected to the inner wall of the second spring.
[0015] The present utility model has the following beneficial effects:
[0016] 1. In the present utility model, the button drives the first spring and the first pressing rod to push the pressing block and the clamping block to rotate under the limit of the rotating shaft. The clamping block slides out from the inner wall of the clamping rod, and the limiting spring drives the top block and the limiting rod to eject the clamping rod, achieving the effect of quickly installing and disassembling the sliding frame and the membrane module.
[0017] 2. In the present utility model, the second pressing rod drives the locking sleeve to slide inside the clamping sleeve and compress the second spring. The L-shaped clamping plate is clamped into the inner wall of the clamping sleeve, enabling the quick fixation of the EPDM tube aerator and the swirl shear aerator. The separating rod drives the L-shaped clamping plate to slide downward, and the second spring and the third spring drive the separating rod and the locking sleeve to rebound, achieving the effect of quickly disassembling the EPDM tube aerator and the swirl shear aerator.
[0018] 3. In the present utility model, the swirl shear aerator and the EPDM tube aerator utilize the characteristic that the sizes of the bubbles generated by the two different aerators are different, and adopt an aeration method of alternating large and small bubbles to achieve the integrated and efficient operation of cleaning and aeration. The EPDM tube aerator generates large and medium-sized bubbles on the centimeter scale, and through the vortex stirring effect generated by its movement and deformation, the sludge settled at the bottom is strengthened to be suspended. The swirl shear aerator utilizes the principle of high-speed jet to shear and drag the bubbles, generating micro-scale bubbles with uniform spatial distribution on the micron scale. During cleaning, the aeration method of alternating large and small bubbles is used to improve the cleaning effect of the sludge attached to the membrane surface without damaging the membrane module. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a perspective view of a membrane bioreactor with composite alternating aeration proposed by the present utility model;
[0020] Figure 2 is a schematic diagram of the membrane module of a membrane bioreactor with composite alternating aeration proposed by the present utility model;
[0021] Figure 3 is a schematic diagram of the clamping sleeve of a membrane bioreactor with composite alternating aeration proposed by the present utility model.
[0022] LEGEND DESCRIPTION:
[0023] 1. Outer shell; 2. Rotating shaft; 3. Clamping block; 4. Pressing block; 5. Limiting rod; 6. Limiting spring; 7. Top block; 8. Cover plate; 9. First spring; 10. Button; 11. First pressing rod; 12. Clamping rod; 13. Sliding frame; 14. Membrane module; 15. Reaction tank; 16. Fixed sleeve; 17. Swirl shear aerator; 18. EPDM tube aerator; 19. Clamping sleeve; 20. First clamping plate; 21. Second pressing rod; 22. Locking sleeve; 23. Second spring; 24. L-shaped clamping plate; 25. Third spring; 26. Separating rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0025] Referring to Figure 1 - Figure 2 , an embodiment provided by the present invention: a membrane bioreactor device with composite alternating aeration, including a housing 1 and a fixing sleeve 16. The inner wall of the housing 1 is fixedly connected with a rotating shaft 2. The outer wall of the rotating shaft 2 is rotatably connected with a clamping block 3. The upper surface of the clamping block 3 is provided with a pressing block 4. The inner wall of the housing 1 is fixedly connected with a limiting spring 6. The top end of the limiting spring 6 is fixedly connected with a top block 7. The lower surface of the top block 7 is fixedly connected with a limiting rod 5. The outer wall of the housing 1 is rotatably connected with a cover plate 8. The inner wall of the cover plate 8 is provided with a first spring 9. The top end of the first spring 9 is fixedly connected with a button 10. The bottom end of the first spring 9 is fixedly connected with a first pressing rod 11. The lower surface of the cover plate 8 is fixedly connected with a clamping rod 12. The inner wall of the fixing sleeve 16 is slidably connected with an EPDM tube aerator 18. The inner wall of the fixing sleeve 16 is slidably connected with a vortex shear aerator 17. The inner wall of the housing 1 is provided with an installation component for quickly installing the filter element; the installation component includes a sliding frame 13. The outer wall of the sliding frame 13 is slidably connected to the inner wall of the housing 1. The inner wall of the sliding frame 13 is slidably connected with a membrane component 14;
[0026] Specifically, by pressing the button 10, the first pressing rod 11 is driven to drive the pressing block 4 and the clamping block 3 to rotate under the limitation of the rotating shaft 2. The clamping block 3 slides out from the inner wall of the clamping rod 12. The limiting spring 6 drives the top block 7 and the limiting rod 5 to push out the clamping rod 12. The sliding frame 13 is pulled out from the inner wall of the housing 1. The membrane component 14 slides out from the inner wall of the sliding frame 13, achieving the effect of quickly replacing the membrane component 14. The vortex shear aerator 17 uses the principle of high-speed jet to shear and drag bubbles, generating micro-scale bubbles with a uniform spatial distribution on the micron scale. The micro-scale bubbles increase the specific surface area to increase the gas-liquid mass transfer area. The EPDM tube aerator 18 generates large and medium-scale bubbles on the centimeter scale. Through the eddy stirring effect generated by its movement and deformation, the sludge settled at the bottom is strengthened and suspended, which can significantly reduce the unit aeration energy consumption. During cleaning, the aeration method of alternating large and small bubbles is used to improve the cleaning effect of the sludge attached to the membrane surface without damaging the membrane component 14.
[0027] Referring to Figure 1 and Figure 3, the outer wall of the limit rod 5 is slidably connected to the inner wall of the pressing block 4, the outer wall of the clamping block 3 is rotatably connected to the inner wall of the housing 1, the upper surface of the first pressing rod 11 is fixedly connected to the inner wall of the button 10, and the outer wall of the clamping block 3 is slidably connected to the inner wall of the clamping rod 12; the lower surface of the housing 1 is fixedly connected with a reaction tank 15, the lower surface of the fixing sleeve 16 is fixedly connected to the inner wall of the reaction tank 15, and the outer wall of the fixing sleeve 16 is fixedly connected with a clamping sleeve 19; the inner wall of the clamping sleeve 19 is fixedly connected with a first clamping plate 20, the inner wall of the first clamping plate 20 is slidably connected with a second pressing rod 21, and the left outer wall of the second pressing rod 21 is fixedly connected with a locking sleeve 22;
[0028] Specifically, by sliding the locking sleeve 22 into the inner walls of the fixing sleeve 16, the EPDM tube aerator 18 and the swirl shear aerator 17, the swirl shear aerator 17 and the EPDM tube aerator 18 can be quickly fixed. When the separating rod 26 slides in the inner wall of the second pressing rod 21, the swirl shear aerator 17 and the EPDM tube aerator 18 can be quickly fixed by the second pressing rod 21 and the locking sleeve 22.
[0029] Refer to Figure 3 , the outer wall of the locking sleeve 22 is slidably connected to the inner wall of the clamping sleeve 19, the left outer wall of the locking sleeve 22 is fixedly connected with a second spring 23, and the other end of the second spring 23 is fixedly connected to the left inner wall of the clamping sleeve 19; the inner wall of the locking sleeve 22 is fixedly connected with an L-shaped clamping plate 24, and the outer wall of the L-shaped clamping plate 24 is fixedly connected with a third spring 25; the right outer wall of the third spring 25 is fixedly connected with a separating rod 26, the outer wall of the separating rod 26 is slidably connected to the inner wall of the L-shaped clamping plate 24, the outer wall of the L-shaped clamping plate 24 is slidably connected to the inner wall of the clamping sleeve 19, the outer wall of the locking sleeve 22 is slidably connected to the inner walls of the fixing sleeve 16 and the EPDM tube aerator 18, and the outer wall of the locking sleeve 22 is slidably connected to the inner wall of the second spring 23;
[0030] Specifically, by driving the L-shaped clamping plate 24 to move downward by the second pressing rod 21, driving the separating rod 26 by the third spring 25 and driving the locking sleeve 22 to slide out to the right by the second spring 23, so as to drive the locking sleeve 22 to quickly slide out from the inner wall of the EPDM tube aerator 18 or the swirl shear aerator 17. When the EPDM tube aerator 18 or the swirl shear aerator 17 is damaged during use, it can achieve the effect of quick disassembly, replacement and maintenance.
[0031] Working principle: When the device needs to be used, the system combines the occurrence characteristics of the swirl shear aerator 17 and the EPDM tube aerator 18. Utilizing the feature that the bubble sizes generated by the two different aerators are different, an aeration method with alternating large and small bubbles is adopted to achieve the integrated and efficient operation of cleaning and aeration. Among them, the EPDM tube aerator 18 generates large and medium-scale bubbles in the centimeter scale. Through the eddy stirring effect generated by its movement and deformation, the sludge settled at the bottom is strengthened to be suspended. The swirl shear aerator 17 utilizes the principle of high-speed jet to shear and drag bubbles, generating micro-scale bubbles with a uniform spatial distribution in the micron scale. The micro-scale bubbles increase the specific surface area to increase the gas-liquid mass transfer area. At the same time, the rising speed of the micro-scale bubbles is slower, which can extend the oxygen dissolution time, enable the water to fully contact with oxygen, and promote oxygen transfer; the medium-scale bubbles strengthen the local turbulence of the liquid and increase the mass transfer coefficient on the liquid phase side. The two work together to strengthen the gas-liquid mass transfer rate, improve the effect of aerobic biochemical reactions, and at the same time can significantly reduce the unit aeration energy consumption. During cleaning, the aeration method with alternating large and small bubbles is used to strengthen the liquid shear effect on the membrane surface, improving the cleaning effect of the sludge attached to the membrane surface without damaging the membrane module 14. During use, pressing the button 10 drives the first spring 9 and the first pressure rod 11 to slide downward. The first pressure rod 11 drives the pressing block 4 and the clamping block 3 to rotate under the limit of the rotating shaft 2. The clamping block 3 slides out from the inner wall of the clamping rod 12. At the same time, the limiting spring 6 drives the top block 7 and the limiting rod 5 to push out the clamping rod 12. During use, the sliding frame 13 is pulled out from the inner wall of the housing 1, and the membrane module 14 slides out from the inner wall of the sliding frame 13, achieving the effect of quickly replacing the membrane module 14 during use. When the second pressure rod 21 slides in the inner wall of the first clamping plate 20 and drives the locking sleeve 22 to slide in the inner wall of the clamping sleeve 19, the locking sleeve 22 slides into the inner walls of the fixed sleeve 16, the EPDM tube aerator 18, and the swirl shear aerator 17, enabling the quick fixation of the swirl shear aerator 17 and the EPDM tube aerator 18 during use. When the disengaging rod 26 slides in the inner wall of the second pressure rod 21 during use, the second pressure rod 21 drives the L-shaped clamping plate 24 to move downward, and the third spring 25 drives the disengaging rod 26 and the second spring 23 drives the locking sleeve 22 to slide out to the right, enabling the locking sleeve 22 to quickly slide out from the inner wall of the EPDM tube aerator 18 or the swirl shear aerator 17 during use, achieving the effect of quick disassembly during use. It has the effects of improving the effect of aerobic biochemical reactions, significantly reducing the unit aeration energy consumption, while improving the cleaning effect of the sludge attached to the membrane surface without damaging the membrane module 14, extending the service life of the membrane, realizing low consumption, environmental protection, economy, and reducing project investment and operation costs on the premise of meeting the discharge requirements.
[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A composite alternating aeration membrane bioreactor, comprising a housing (1) and a fixing sleeve (16), characterized in that: The inner wall of the housing (1) is fixedly connected to a rotating shaft (2), the outer wall of the rotating shaft (2) is rotatably connected to a clamping block (3), the upper surface of the clamping block (3) is provided with a pressing block (4), the inner wall of the housing (1) is fixedly connected to a limit spring (6), the top end of the limit spring (6) is fixedly connected to a top block (7), the lower surface of the top block (7) is fixedly connected to a limit rod (5), the outer wall of the housing (1) is rotatably connected to a cover plate (8), the inner wall of the cover plate (8) is provided with a first spring ( 9), the top end of the first spring (9) is fixedly connected to a button (10), the bottom end of the first spring (9) is fixedly connected to a first pressure rod (11), the lower surface of the cover plate (8) is fixedly connected to a clamping rod (12), the inner wall of the fixed sleeve (16) is slidably connected to an EPDM tubular aerator (18), the inner wall of the fixed sleeve (16) is slidably connected to a swirl shear aerator (17), and the inner wall of the housing (1) is provided with a mounting assembly, which is used for quickly installing the filter element.
2. The membrane bioreactor with composite alternating aeration according to claim 1, characterized in that: The installation assembly comprises a sliding frame (13), the outer wall of the sliding frame (13) is slidably connected to the inner wall of the outer shell (1), and the inner wall of the sliding frame (13) is slidably connected to a membrane assembly (14).
3. The composite alternating aeration membrane bioreactor according to claim 2, characterized in that: The outer wall of the limit rod (5) is slidably connected to the inner wall of the pressure block (4), the outer wall of the clamping block (3) is rotatably connected to the inner wall of the housing (1), the upper surface of the first pressure rod (11) is fixedly connected to the inner wall of the button (10), and the outer wall of the clamping block (3) is slidably connected to the inner wall of the clamping rod (12).
4. The composite alternating aeration membrane bioreactor according to claim 3, characterized in that: The lower surface of the housing (1) is fixedly connected to a reaction pool (15), the lower surface of the fixed sleeve (16) is fixedly connected to the inner wall of the reaction pool (15), and the outer wall of the fixed sleeve (16) is fixedly connected to a ferrule (19).
5. The composite alternating aeration membrane bioreactor according to claim 4, characterized in that: The inner wall of the clamping sleeve (19) is fixedly connected to a first clamping plate (20), the inner wall of the first clamping plate (20) is slidably connected to a second pressure rod (21), and the left outer wall of the second pressure rod (21) is fixedly connected to a locking sleeve (22).
6. The composite alternating aeration membrane bioreactor according to claim 5, characterized in that: The outer wall of the locking sleeve (22) is slidably connected to the inner wall of the clamping sleeve (19), the left outer wall of the locking sleeve (22) is fixedly connected to a second spring (23), and the other end of the second spring (23) is fixedly connected to the left inner wall of the clamping sleeve (19).
7. The composite alternating aeration membrane bioreactor according to claim 6, characterized in that: An L-shaped clamping plate (24) is fixedly connected to the inner wall of the locking sleeve (22), and a third spring (25) is fixedly connected to the outer wall of the L-shaped clamping plate (24).
8. The membrane bioreactor with composite alternating aeration according to claim 7, characterized in that: The right outer wall of the third spring (25) is fixedly connected to a disengagement rod (26), the outer wall of the disengagement rod (26) is slidably connected to the inner wall of the L-shaped clamping plate (24), the outer wall of the L-shaped clamping plate (24) is slidably connected to the inner wall of the clamping sleeve (19), the outer wall of the locking sleeve (22) is slidably connected to the inner walls of the fixed sleeve (16) and the EPDM tubular aerator (18), and the outer wall of the locking sleeve (22) is slidably connected to the inner wall of the second spring (23).