A mbr membrane module with pulse aeration
By introducing a pulse aeration system and a negative pressure liquid extraction device into the MBR membrane module, the problem of insufficient aeration uniformity was solved, gas-liquid mass transfer efficiency was improved and membrane fouling was reduced, the service life of the membrane was extended and the operating cost was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING WATER-RES ENVIRONMENT TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-24
AI Technical Summary
Existing MBR membrane modules have a single aeration method and insufficient uniformity, resulting in poor gas-liquid mass transfer, serious membrane fouling, shortened membrane life and increased operating costs.
Design an MBR membrane module with pulse aeration, using a pulse blower, aeration main pipe, aeration branch pipe and aeration capillary to achieve intermittent airflow aeration, and install a check valve in the aeration branch pipe to prevent gas backflow. At the same time, a negative pressure pipe and a negative pressure liquid pump are set on the hollow base to ensure airflow stability and membrane fiber cleanliness.
It enhances the gas-liquid mass transfer efficiency on the membrane fiber surface, reduces membrane fouling, improves treatment efficiency, ensures the stability and reliability of the aeration system, extends the membrane's service life, and reduces operating costs.
Smart Images
Figure CN224548188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment accessories technology, specifically to an MBR membrane module with pulse aeration. Background Technology
[0002] MBR (Membrane Bioreactor) membrane modules, as a highly efficient technology in the field of water treatment, combine membrane separation technology with biological treatment processes to achieve deep purification and resource utilization of wastewater. With increasingly stringent environmental protection requirements and the intensification of water scarcity, MBR membrane modules have gradually become a research hotspot and application trend in the water treatment field due to their advantages such as high effluent quality, small footprint, and high degree of automation. However, existing MBR membrane modules typically employ relatively simple and uneven aeration methods, making it difficult to achieve effective gas-liquid mass transfer. This leads to severe membrane fouling problems, shortens membrane lifespan, and increases operating costs. Utility Model Content
[0003] The purpose of this invention is to provide an MBR membrane module with pulse aeration to solve the problem of continuous aeration in existing MBR membrane modules mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] An MBR membrane module with pulse aeration includes several sets of hollow top seats and hollow bases arranged in parallel, and several sets of hollow membrane fibers arranged uniformly and equidistantly between the two sets. The feature is that the top of each hollow membrane fiber is connected to the interior of the hollow top seat, and the bottom of the hollow membrane fiber is connected to the top surface of the hollow base and the bottom of the hollow membrane fiber is sealed.
[0006] The hollow base is provided with an aeration main pipe at its end. Each set of hollow bases is connected to the aeration main pipe through an aeration branch pipe. The aeration main pipe is connected to a pulse blower through a retractable corrugated pipe. Each set of aeration branch pipes is equipped with a check valve that allows air to enter but not exit. The top surface of the hollow base is provided with several aeration capillary holes that are evenly and equidistantly arranged.
[0007] Preferably, two adjacent sets of hollow top seats and two adjacent sets of hollow base seats are connected by connecting columns.
[0008] Preferably, the four corners between the upper and lower sets of hollow top seats and hollow base seats are connected by fixing columns.
[0009] Preferably, a negative pressure pipe is provided above the hollow base.
[0010] Preferably, the negative pressure pipe is connected to each set of hollow bases via a connecting branch pipe.
[0011] Preferably, one end of the negative pressure pipe is connected to a negative pressure pump via a retractable corrugated pipe.
[0012] Preferably, a sealing ring is provided at the connection between each hollow membrane filament and the hollow top seat.
[0013] Compared with existing technologies, the beneficial effects of this utility model are:
[0014] 1. This MBR membrane module with pulse aeration, through the installation of a pulse blower, aeration main pipe, aeration branch pipe, and aeration capillary, enables the MBR membrane module to achieve pulse aeration function, that is, to generate intermittent airflow during the aeration process, which helps to enhance the gas-liquid mass transfer efficiency on the membrane fiber surface, reduce membrane fouling, and improve treatment efficiency. At the same time, by installing a check valve that allows air to enter but not exit in the aeration branch pipe of the hollow base, backflow of gas is effectively prevented, ensuring the stability and reliability of the aeration system. In addition, the top of the hollow membrane fiber is connected to the interior of the hollow top seat, while the bottom is sealed to the top surface of the hollow base. This design not only ensures smooth airflow but also facilitates the installation and maintenance of the membrane fiber.
[0015] 2. In this MBR membrane module with pulse aeration, a negative pressure pipe is installed above the hollow base. The negative pressure pipe is connected to each hollow base through a connecting branch pipe to realize the negative pressure extraction function of the internal space of the membrane fiber, which helps to discharge the gas or liquid accumulated in the membrane fiber in a timely manner and keep the inside of the membrane fiber clean and unobstructed.
[0016] 3. In this MBR membrane module with pulse aeration, one end of the negative pressure pipe is connected to a negative pressure pump via a retractable corrugated pipe. The negative pressure pump serves as a power source, providing a stable negative pressure environment for the negative pressure pipe. The retractable corrugated pipe has good flexibility and extensibility, which can adapt to the installation requirements under different working conditions and reduce loosening or damage to the connection caused by installation errors or vibration. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;
[0020] Figure 3 This is a top view of the hollow base of this utility model.
[0021] 10. Hollow top seat; 11. Negative pressure pipe; 12. Connecting branch pipe; 13. Negative pressure pump; 14. Expandable corrugated pipe;
[0022] 20. Hollow base; 21. Main aeration pipe; 22. Branch aeration pipe; 23. Pulse blower; 24. Check valve; 25. Aeration capillary pores;
[0023] 30. Hollow membrane fibers;
[0024] 40. Connecting rod;
[0025] 50. Fixed column. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] An MBR membrane module with pulse aeration, such as Figures 1-3As shown, the device includes several sets of hollow top seats 10 and hollow bases 20 arranged in parallel, and several sets of hollow membrane filaments 30 arranged evenly and equidistantly between the two sets. The key feature is that the top of each hollow membrane filament 30 is connected to the interior of the hollow top seat 10, and the bottom of the hollow membrane filament 30 is connected to the top surface of the hollow base 20 and sealed at the bottom. An aeration main pipe 21 is provided at the end of the hollow base 20. Each set of hollow bases 20 is connected to the aeration main pipe 21 via aeration branch pipes 22. The aeration main pipe 21 is connected to a pulse blower 23 via a retractable corrugated pipe 14. Each set of aeration branch pipes 22 is equipped with a check valve 24 that allows air to enter but not exit. Several evenly and equidistantly arranged aeration capillary holes 25 are opened on the top surface of the hollow base 20. Through the pulse blower 23, the aeration main pipe 21, the aeration branch pipes 22, and the aeration... The capillary pores 25 enable the MBR membrane module to achieve pulse aeration, i.e., to generate intermittent airflow during aeration, which helps to enhance the gas-liquid mass transfer efficiency on the membrane fiber surface, reduce membrane fouling, and improve treatment efficiency. At the same time, by installing a check valve 24 that allows air to enter but not exit in the aeration branch pipe 22 of the hollow base 20, backflow of gas is effectively prevented, ensuring the stability and reliability of the aeration system. In addition, the top of the hollow membrane fiber 30 is connected to the interior of the hollow top seat 10, while the bottom is sealed to the top surface of the hollow base 20. This design not only ensures smooth airflow but also facilitates the installation and maintenance of the membrane fiber. Finally, the two adjacent sets of hollow top seats 10 and the two adjacent sets of hollow bases 20 are connected by connecting columns 40, which enhances the stability and durability of the overall structure, enabling the MBR membrane module to operate stably under various operating conditions.
[0029] Furthermore, the two adjacent sets of hollow top seats 10 and the two adjacent sets of hollow base seats 20 are connected by connecting columns 40 to enhance the structural stability of the entire membrane module.
[0030] Among them, the four corners between the upper and lower hollow top seats 10 and hollow base seats 20 are all connected by fixing columns 50 to enhance the fixing effect of the membrane module at key stress points.
[0031] Specifically, a negative pressure pipe 11 is provided above the hollow base 20. The negative pressure pipe 11 is connected to each hollow base 20 through a connecting branch pipe 12 to realize the negative pressure extraction function of the internal space of the membrane fiber, which helps to discharge the gas or liquid accumulated in the membrane fiber in a timely manner and keep the inside of the membrane fiber clean and unobstructed.
[0032] In addition, one end of the negative pressure pipe 11 is connected to the negative pressure pump 13 via a retractable corrugated pipe 14. The negative pressure pump 13 serves as a power source, providing a stable negative pressure environment for the negative pressure pipe 11. The retractable corrugated pipe 14 has good flexibility and extensibility, which can adapt to the installation requirements under different working conditions and reduce loosening or damage to the connection caused by installation errors or vibration.
[0033] It is worth noting that a sealing ring is provided at the connection between each hollow membrane filament 30 and the hollow top seat 10 to improve the sealing effect.
[0034] The working principle of this MBR membrane module with pulse aeration:
[0035] First, install the hollow top seat 10 and the hollow base 20 according to the design requirements, and connect the two adjacent sets of hollow top seats 10 and the two adjacent sets of hollow bases 20 through the connecting column 40 to ensure the stability of the overall structure.
[0036] Then, the hollow membrane filaments 30 are installed between the hollow top seat 10 and the hollow base 20, so that the top of each hollow membrane filament 30 is connected to the inside of the hollow top seat 10 and the bottom is sealed to the top surface of the hollow base 20.
[0037] Start the pulse blower 23, and the pulse airflow generated enters the aeration main pipe 21 through the retractable bellows 14;
[0038] The airflow is split from the main aeration pipe 21 to each aeration branch pipe 22. Since the aeration branch pipe 22 is equipped with a check valve 24 that only allows air to enter but not exit, it effectively prevents gas backflow and ensures that the airflow enters the hollow base 20 stably.
[0039] The airflow entering the hollow base 20 is then ejected through several evenly spaced aeration capillary holes 25 on the top surface to perform pulse aeration on the surface of the hollow membrane filaments 30.
[0040] Throughout the operation, pulse aeration generates intermittent airflow, which enhances the gas-liquid mass transfer efficiency on the membrane fiber surface, reduces membrane fouling, and improves treatment efficiency; while the stable structural design enables the MBR membrane module to operate stably under various operating conditions.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An MBR membrane module with pulse aeration, comprising several sets of vertically parallel hollow top seats (10), hollow base seats (20), and several sets of uniformly spaced hollow membrane fibers (30) disposed between the two sets, characterized in that: The top of each hollow membrane filament (30) is connected to the interior of the hollow top seat (10), and the bottom of the hollow membrane filament (30) is connected to the top surface of the hollow base (20) and the bottom of the hollow membrane filament (30) is sealed. The hollow base (20) is provided with an aeration main pipe (21) at its end. Each set of hollow bases (20) is connected to the aeration main pipe (21) through an aeration branch pipe (22). The aeration main pipe (21) is connected to a pulse blower (23) through a retractable corrugated pipe (14). Each set of aeration branch pipes (22) is equipped with a check valve (24) that allows air to enter but not exit. The top surface of the hollow base (20) is provided with several uniformly spaced aeration capillary holes (25).
2. The MBR membrane module with pulse aeration according to claim 1, characterized in that: The two adjacent sets of hollow top seats (10) and the two adjacent sets of hollow base seats (20) are connected by connecting columns (40).
3. The MBR membrane module with pulse aeration according to claim 1, characterized in that: The four corners between the upper and lower hollow top seat (10) and hollow base (20) are all connected by fixing columns (50).
4. The MBR membrane module with pulse aeration according to claim 1, characterized in that: A negative pressure pipe (11) is provided above the hollow base (20).
5. The MBR membrane module with pulse aeration according to claim 4, characterized in that: The negative pressure pipe (11) is connected to each hollow base (20) via a connecting branch pipe (12).
6. The MBR membrane module with pulse aeration according to claim 4, characterized in that: One end of the negative pressure pipe (11) is connected to the negative pressure pump (13) via a retractable corrugated pipe (14).
7. The MBR membrane module with pulse aeration according to claim 1, characterized in that: A sealing ring is provided at the connection between each hollow membrane filament (30) and the hollow top seat (10).