Rotating operation membrane bioreactor device

Abstract

This application relates to a rotating membrane bioreactor (MBR) device, comprising a reducer, a rotating shaft, and membrane elements. The reducer has a gear reduction mechanism, capable of withstanding high torque input. It has a power input shaft at the top and an output shaft at the bottom. The top of the rotating shaft is connected to the reducer's output shaft, and the bottom is fixed to a shaft seat. The shaft has a first mounting mechanism for mounting the membrane elements. The membrane elements are cylindrical hollow membrane bioreactor membranes, with flange structures at the top and bottom to fix the membrane. The flanges are located at both ends of the membrane bioreactor mounting cylinder, which is a hollow cylinder with a second mounting mechanism inside that matches the first mounting mechanism of the rotating shaft. The rotating MBR method of this invention has significant advantages. In terms of energy consumption, it replaces the blower with a low-power reducer, which is expected to reduce energy consumption by 70%, saving operating costs. In terms of investment, it eliminates the need for blower and machine room construction, saving equipment and civil engineering costs. In terms of treatment and maintenance, rotation eliminates polarization, ensuring system stability. The membrane tank environment can be flexibly adjusted to adapt to different wastewater treatment scenarios.

Description

Technical Field

[0001] This application relates to the fields of environmental engineering and water treatment technology, and in particular to a rotating membrane bioreactor device. Background Technology

[0002] Existing membrane bioreactor (MBR) technology has become the mainstream biological treatment process due to its advantages such as good effluent quality, small footprint, and modular design. However, its high energy consumption and susceptibility to membrane fouling, leading to high operating costs, are factors restricting its development. The conventional method for preventing membrane fouling is high-intensity aeration and purging. High-intensity purging results in high energy consumption and dead zones, leading to incomplete removal of membrane fouling.

[0003] Because the sludge concentration in the membrane tank of a membrane bioreactor is typically maintained at 8000 mg / L to 15000 mg / L, sludge adheres to the membrane fiber surface, causing flux loss and membrane fouling. This phenomenon is commonly known as concentration polarization. Therefore, membrane bioreactors must incorporate antifouling measures, currently mostly achieved through purging. Aeration shakes the membrane fibers, removing the sludge adhering to the membrane surface and restoring membrane flux, thus counteracting membrane fouling. However, this requires a high-powered blower and can lead to a series of adverse consequences.

[0004] Existing purging methods cannot completely eliminate concentration polarization because gas will preferentially go to areas with low resistance, and there will also be losses during the rise of the bubbles. This will create purging dead zones, which will still lead to membrane fouling and a decrease in membrane flux. Utility Model Content

[0005] In view of this, this application proposes a rotating membrane bioreactor device, the structure of which includes: a reducer, a rotating shaft, a shaft seat, and membrane elements. The reducer has a power input shaft at the top and an output shaft at the bottom. The top of the rotating shaft is connected to the output shaft at the bottom of the reducer, and the bottom is rotatably mounted on the shaft seat. A first mounting mechanism for mounting the membrane elements is provided on the rotating shaft. The membrane elements are cylindrical hollow membrane bioreactor membranes, with flange structures at the top and bottom for fixing the membrane bioreactor membrane. The membrane bioreactor mounting cylinder is a hollow cylindrical structure, and a second mounting mechanism matching the first mounting mechanism for the membrane elements on the rotating shaft is provided inside the membrane bioreactor mounting cylinder.

[0006] Preferably, a low-power motor is connected to the top power input shaft of the reducer.

[0007] Preferably, the connection between the reducer and the rotating shaft is a sealed connection.

[0008] Preferably, the first mounting mechanism and the second mounting mechanism are a snap-fit ​​structure.

[0009] Preferably, the reducer is a planetary reducer.

[0010] Preferably, the reducer is a gear reducer.

[0011] Preferably, the rotating shaft is made of a corrosion-resistant alloy material.

[0012] Preferably, the snap-fit ​​structure includes a snap-fit ​​groove of the first mounting mechanism and a snap-fit ​​hook of the second mounting mechanism.

[0013] Preferably, the membrane bioreactor of the membrane element is an inorganic membrane bioreactor or an organic membrane bioreactor.

[0014] Preferably, an aeration device is provided next to the rotating membrane bioreactor device, and the aeration device generates an airflow that blows towards the membrane element.

[0015] The beneficial effects of this utility model are: The rotary MBR method of this invention has significant advantages in terms of energy consumption. It eliminates the need for a high-power fan, replacing it with a low-power reducer. It is estimated that energy consumption can be reduced by 70% compared to traditional fan-purged MBR systems, greatly reducing operating costs. Simultaneously, it eliminates the need for a fan and fan room; only a reducer is added to the upper part of the membrane element to achieve 360-degree rotation, saving substantial equipment investment and civil engineering costs.

[0016] In terms of treatment effectiveness and maintenance, this method eliminates concentration polarization through membrane element rotation, and the membrane fiber vibration has no dead angles, solving the problem of dead angles in traditional purging. This avoids the easy clogging of high-efficiency purging devices and also avoids the drawbacks of vibration MBR, such as high requirements for membrane tank type and membrane frame mechanical performance, and frequent membrane frame replacement, ensuring stable system operation.

[0017] The membrane tank offers flexible environmental adjustment. Because the rotation of the membrane fibers does not alter the physicochemical properties of the membrane tank or introduce dissolved oxygen, the membrane tank can be flexibly set to an aerobic or anoxic environment according to process requirements, enhancing process performance and providing a more adaptable solution for wastewater treatment in different scenarios.

[0018] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0020] Figure 1 A structural diagram of a rotating membrane bioreactor device according to an embodiment of this application is shown. Detailed Implementation

[0021] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0022] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0026] This application discloses a rotating membrane bioreactor device, applicable in the fields of environmental engineering and water treatment technology / equipment. Specifically, according to... Figure 1The structure includes: a reducer 101, a rotating shaft 102, a membrane element 103, and a shaft seat 104. The reducer 101 has a power input shaft at its top and an output shaft at its bottom. The rotating shaft 102 is connected to the output shaft at the bottom of the reducer at its top and is rotatably mounted on the shaft seat at its bottom. A first mounting mechanism 105 for mounting the membrane element 103 is provided on the rotating shaft 102. The membrane element 103 is a cylindrical hollow membrane bioreactor membrane. Flange structures 106 are provided at the top and bottom of the membrane element 103 to fix the membrane bioreactor membrane. The membrane bioreactor mounting cylinder 107 is a hollow cylindrical structure. Inside the membrane bioreactor mounting cylinder 107 is a second mounting mechanism 108 matching the first mounting mechanism 105 of the membrane element 103 on the rotating shaft 102. This rotating membrane bioreactor device has a compact structure. The reducer 101, with its high torque-bearing gear reduction mechanism, serves as the power core, connecting the membrane element 103 via the rotating shaft 102. The membrane element 103 has a unique cylindrical hollow structure, which is stably installed by a matching installation mechanism. The overall design serves efficient water treatment and is applied in the field of environmental engineering.

[0027] In one possible implementation, a low-power motor 110 is connected to the top power input shaft of the reducer 101. The low-power motor is connected to the rotating shaft 102 via the reducer 101, utilizing the gear reduction and high torque capacity of the reducer 101 to drive the membrane element 103 to rotate at a constant speed. Its advantages include energy saving (70% reduction in energy consumption), small footprint, stable operation, strong process adaptability, no change to the physicochemical properties of the membrane tank, and elimination of concentration polarization through mechanical motion.

[0028] In one possible implementation, the connection between the speed reducer 101 and the rotating shaft 102 is a sealed connection.

[0029] In one possible implementation, the first mounting mechanism 105 and the second mounting mechanism 108 are a snap-fit ​​structure. This snap-fit ​​structure can quickly disassemble the membrane element through its structural design, which significantly improves the speed of membrane element replacement.

[0030] In one possible implementation, the reducer 101 is a planetary reducer. Planetary reducers are characterized by their small size and light weight, yet they can achieve a large transmission ratio. They have high transmission efficiency, effectively reducing energy loss, while also exhibiting high precision, strong stability, adaptability to various complex working conditions, high load-bearing capacity, and long service life.

[0031] In one possible implementation, the reducer 101 is a gear reducer. Gear reducers have a compact structure, high transmission efficiency, and can adapt to different working environments. They have a large torque transmission capacity, operate smoothly with low noise, can achieve various transmission ratios through reasonable gear design, and are highly reliable and relatively simple to maintain.

[0032] In one possible implementation, the rotating shaft 102 is made of a corrosion-resistant alloy material.

[0033] In one possible implementation, the snap-fit ​​structure includes a snap-fit ​​groove of a first mounting mechanism and a snap-fit ​​hook of a second mounting mechanism.

[0034] In one possible implementation, the membrane bioreactor of membrane element 103 is an inorganic membrane bioreactor or an organic membrane bioreactor.

[0035] In one possible implementation, an aeration device is installed next to the rotating membrane bioreactor, generating an airflow that blows towards the membrane element. The aeration device and the membrane element 103 rotate in tandem, enhancing the elimination of concentration polarization and ensuring efficient and stable operation of the equipment. Simultaneously, aeration does not alter the physicochemical properties of the membrane tank, does not introduce dissolved oxygen, and does not hinder the flexible environmental settings of the membrane tank according to process requirements, thus contributing to improved process efficiency.

[0036] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A rotating operation membrane bioreactor apparatus, characterized by, Comprise: a speed reducer, a rotating shaft, a shaft base, a membrane bioreactor membrane mounting cylinder and a membrane element; the top of the speed reducer has a power input shaft, and the lower part of the speed reducer has an output shaft; the top of the rotating shaft is connected to the output shaft of the lower part of the speed reducer, and the bottom is rotatably arranged on the shaft base, and the rotating shaft is provided with a first mounting mechanism for mounting the membrane element; the membrane element is a cylindrical hollow membrane bioreactor membrane, flange structures are arranged on the upper and lower parts of the membrane element, the flange structures fix the membrane element, the membrane bioreactor membrane mounting cylinder is a hollow cylindrical structure, and the inside of the membrane bioreactor membrane mounting cylinder is provided with a second mounting mechanism matched with the first mounting mechanism of the membrane element on the rotating shaft.

2. The rotating operation membrane bioreactor apparatus according to claim 1, characterized by The power input shaft of the top of the speed reducer is connected to a low-power motor.

3. The rotating operation membrane bioreactor apparatus according to claim 1, wherein The connection between the speed reducer and the rotating shaft is a sealed connection.

4. The rotating operation membrane bioreactor apparatus according to claim 1, wherein The first mounting mechanism and the second mounting mechanism are a clamping structure.

5. The rotating operation membrane bioreactor apparatus according to claim 2, wherein The speed reducer is a planetary speed reducer.

6. The rotating membrane bioreactor apparatus of claim 2, wherein, The speed reducer is a gear speed reducer.

7. The rotating membrane bioreactor apparatus of claim 2, wherein, The rotating shaft is made of corrosion-resistant alloy material.

8. The rotating membrane bioreactor apparatus of claim 4, wherein, The clamping structure includes a clamping groove of the first mounting mechanism and a clamping hook of the second mounting mechanism.

9. The rotating membrane bioreactor apparatus of claim 1, wherein, The membrane bioreactor membrane of the membrane element is an inorganic membrane bioreactor membrane or an organic membrane bioreactor membrane.

10. The rotating membrane bioreactor apparatus of claim 1, wherein, An aeration device is arranged beside the rotating membrane bioreactor device, and the aeration device generates airflow to blow towards the membrane element.

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