Membrane aeration bio-membrane reactor for advanced sewage treatment

Abstract

The invention relates to a membrane aeration bio-membrane reactor for advanced sewage treatment. The membrane aeration bio-membrane reactor comprises an outer framework, a bearing frame and an aeration membrane group, a plurality of bearing frames are arranged on the outer framework, and a square frame is hinged to the side edge of the outer framework; barrier strips A are arranged at the upper part and the lower part of the outer framework, the barrier strips A are used for performing certain protection on the upper position and the lower position of the outer framework, barrier strips B are arranged on the square frame, the barrier strips B are used for performing certain protection on the left position and the right position of the outer framework, and the aeration membrane group is arranged in the bearing frame. The aeration membrane group can quickly move into the butt joint channel and turn over around the butt joint column through the guide matching of the butt joint channel with the gradient specification and the inner edge gradient characteristic and the butt joint column A, and the optimal butt joint state of the aeration membrane group and the bearing frame is realized through the matching and limiting of the fan-shaped channel and the butt joint column B, so that the sewage can be effectively treated by the aeration membrane group, and the sewage treatment efficiency is improved. And the efficiency and the accuracy of aeration membrane group butt joint are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a membrane aeration biofilm reactor for advanced wastewater treatment. Background Technology

[0002] In the field of advanced wastewater treatment, membrane aerated biofilm reactors are widely used in various wastewater treatment scenarios due to their high pollutant degradation capabilities. Among them, the aerated membrane module, as a core functional component, directly affects the wastewater treatment efficiency, operation and maintenance costs, and equipment lifespan of the reactor due to its assembly accuracy, stability, and ease of disassembly and assembly with the supporting structure. After prolonged use, a large amount of impurities will remain on the surface of the aeration membrane, resulting in a poor aeration effect and thus an increase in the required aeration volume. In addition, most aeration membranes are fixedly connected to the frame, which is time-consuming and laborious to maintain. Furthermore, the aeration membrane is subject to the impact of water flow, and the long-term impact also affects its position. In view of this, a membrane aeration biofilm reactor for advanced wastewater treatment is proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: after a long period of use, a large number of impurities will remain on the surface of the aeration membrane, resulting in a poor aeration effect, which will lead to an increase in the required aeration volume. In addition, most aeration membranes are fixedly connected to the frame, which is time-consuming and laborious to maintain. Furthermore, the aeration membrane is subject to the impact of water flow, and the long-term impact also affects its position.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a membrane aeration biofilm reactor for deep wastewater treatment, comprising an outer skeleton, a support frame, and an aeration membrane assembly; Multiple support frames are mounted on the outer frame, and square frames are hinged to the side of the outer frame. The upper and lower parts of the outer frame are equipped with baffles A, which are used to protect the upper and lower parts of the outer frame. The frame is equipped with baffles B, which are used to protect the left and right parts of the outer frame. The aeration membrane assembly is placed in the support frame.

[0006] An orientation module is installed at the docking position of the support frame and the aeration membrane assembly. The orientation module facilitates the docking of the aeration membrane assembly onto the support frame. The orientation module includes a docking channel and a docking post A. The docking channel is milled on the inner edge of the support frame. The dimensions of the docking channel gradually decrease from its entrance to its depth. The inner edge of the docking channel is milled into a slope shape to facilitate the guiding effect of the docking post A into the depth of the docking channel, making it easier for the aeration membrane assembly to dock onto the support frame. The docking post A is assembled on the outer contour of the aeration membrane assembly. The docking post A and the docking channel are in a telescopic movement cooperation. After the docking post A moves to the depth of the docking channel, the aeration membrane assembly can flip along the docking post A. The aeration membrane assembly has a docking post B installed on the same side as docking post A, and the support frame has a fan-shaped channel milled on the same side of the docking channel. The width of the fan-shaped channel matches the specifications of docking post B. The outer contour of the support frame is provided with a limiting module, which includes an L-shaped seat, a limiting channel, and an outlet channel. The L-shaped seat is disposed on the outer contour of the support frame, and a directional block and a limiting channel are reserved on the L-shaped seat. The docking post B moves telescopically in the limiting channel and the outlet channel. The support frame is equipped with a stabilizing module, which includes an inner empty bag and a storage space. The inner empty bag is located on the inner edge of the support frame, and the middle part of the inner empty bag is defined as the storage space.

[0007] As a preferred technical solution for a membrane aerated biofilm reactor for advanced wastewater treatment, the limiting module is hingedly equipped with an auxiliary rod, wherein when the aerated membrane group moves into the outlet channel, the auxiliary rod can move in conjunction with the docking column B toward the slope side B.

[0008] As a preferred technical solution for a membrane aeration biofilm reactor for advanced wastewater treatment, an elastic element A is installed at the edge of the L-shaped seat, another part of the elastic element A is connected to the support frame, and a U-frame is configured at the edge of the L-shaped seat away from the elastic element A.

[0009] As a preferred technical solution for a membrane aeration biofilm reactor for advanced wastewater treatment, a guide rail is milled on the short side of the L-shaped base, and an directional block is mounted on the outer contour of the support frame, the directional block extending and retracting within the guide rail.

[0010] As a preferred technical solution for a membrane aerated biofilm reactor for advanced wastewater treatment, the defined channel is divided into a slope section A and a horizontal section A, which are interconnected. When the docking column B reaches the horizontal section A, its position is defined.

[0011] As a preferred technical solution for a membrane aerated biofilm reactor for advanced wastewater treatment, the outlet channel is divided into a slope section B and a horizontal section B. Both the slope section B and the horizontal section B are milled on the L-shaped base. The slope section B and the horizontal section B are interconnected. The horizontal section B and the horizontal section A are interconnected. The slope section B extends into the horizontal section B.

[0012] As a preferred technical solution for a membrane aeration biofilm reactor for advanced wastewater treatment, the auxiliary rod is provided with an elastic element B at the hinge position on the L-shaped seat, the auxiliary rod is located in the middle of the limiting channel and the outlet channel, the auxiliary rod is provided with a locking block, and the L-shaped seat is provided with a stop block.

[0013] As a preferred technical solution for a membrane aerated biofilm reactor used for advanced wastewater treatment, an extension seat is installed on the L-shaped base.

[0014] As a preferred technical solution for a membrane aerated biofilm reactor for advanced wastewater treatment, the outer contour of the support frame is equipped with a supply module. The supply module includes a fixed cylinder, an L-channel, a rubber disc, and a linkage column. The fixed cylinder is disposed on the support frame, the L-channel is connected to the part of the fixed cylinder that is offset from the L-seat, and another part of the L-channel passes through the support frame and is connected to the inner empty bag.

[0015] As a preferred technical solution for a membrane aerated biofilm reactor for advanced wastewater treatment, the rubber disc extends and retracts within a fixed cylinder. One side of the rubber disc is connected to a linkage column. The portion of the linkage column extending out of the fixed cylinder is connected to one side of an extension seat. When the linkage column B is positioned in the horizontal section A, it is in a pressed state, and the fixed cylinder replenishes the storage space, causing the inner empty bag to bulge. At this moment, the connection between the aeration membrane assembly and the support frame can be further wrapped, ensuring the stability of the connection between the aeration membrane assembly and the support frame, and eliminating any gaps at the connection point.

[0016] The beneficial effects of this invention are: Through the gradual change in specifications and the inner slope characteristics of the docking channel, and the guiding cooperation with docking column A, the aeration membrane module can quickly move into the docking channel and rotate around the column. With the matching limit of the fan-shaped channel and docking column B, the optimal docking state between the aeration membrane module and the support frame is achieved, ensuring that all sewage can be effectively treated by the aeration membrane module, and greatly improving the efficiency and accuracy of the docking of the aeration membrane module. The limiting module uses a stepped channel design in the slope section A and the horizontal section A, combined with the reset force of the elastic element A, to make the docking column B automatically limit its position after entering the horizontal section A, firmly locking the aeration membrane group in the optimal working position, preventing the aeration membrane group from shifting and affecting the sewage treatment effect, while also offsetting the docking gap and improving the overall structural stability. Pulling the U-frame will move the L-seated position in conjunction with the slope B of the outlet channel, the guiding action of the auxiliary rod, and the reset linkage of elastic elements A and B, quickly breaking the balance of the aeration membrane group and achieving the tilted detachment of the aeration membrane group. No complicated operation is required, which solves the problem of difficult disassembly and cleaning after the membrane group intercepts impurities, greatly reducing the difficulty and time of maintenance. Furthermore, regular treatment of the aeration membrane group can reduce the required air volume and aeration volume, resulting in a saving effect. The addition of a stabilization module and a supply module works in tandem. After the aerated membrane module is in place, the linkage column is pressed to trigger the fixed cylinder to replenish the inner empty bag, causing the inner empty bag to bulge and tightly wrap the joint between the membrane module and the support frame, further strengthening the joint stability and ensuring wastewater treatment efficiency. During disassembly, the inner empty bag collapses simultaneously, without hindering the membrane module from detaching, thus balancing stability and ease of operation.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This invention is based on Figure 1 Diagram showing the square frame opening.

[0020] Figure 3 This is a schematic diagram of the connection between the support frame and the aeration membrane assembly of the present invention.

[0021] Figure 4 This invention is based on Figure 3 Schematic diagram at point X in the middle.

[0022] Figure 5 This is a schematic diagram of the carrier frame of the present invention.

[0023] Figure 6 This is a schematic diagram of the aeration membrane assembly of the present invention.

[0024] Figure 7 This is a cross-sectional schematic diagram of the support frame of the present invention.

[0025] Figure 8 This is a schematic diagram of the L-shaped base of the present invention.

[0026] Figure 9 This is a schematic diagram of the auxiliary rod of the present invention.

[0027] Figure 10 This is a schematic diagram of the fixed cylinder of the present invention.

[0028] Figure 11 This is a schematic diagram of the mating of the docking post B and the L seat of the present invention.

[0029] Figure label: 100. Outer frame; 110. Baffle A; 200. Square frame; 210. Baffle B; 300. Bearing frame; 310. Docking channel; 311. Fan-shaped channel; 400. Aeration membrane assembly; 410. Docking column A; 411. Docking column B; 420. L-shaped seat; 421. Guide rail; 422. Extension seat; 423. Orientation block; 430. Limiting channel; 431. Slope section A; 432. Horizontal section A; 440. Lead-out channel; 441. Slope section B; 442. Horizontal section B; 450. Elastic element A; 460. U-frame; 500. Auxiliary rod; 510. Locking block; 520. Baffle; 600. Fixed cylinder; 610. L-shaped passage; 611. Rubber disc; 612. Linkage column; 620. Inner empty bag; 621. Storage space. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Example, refer to Figure 1 and Figure 2A membrane aeration biofilm reactor for deep wastewater treatment includes an outer frame 100, a support frame 300, and an aeration membrane assembly 400. Multiple load-bearing frames 300 are mounted on the outer frame 100, and square frames 200 are hinged to the side of the outer frame 100. The upper and lower parts of the outer frame 100 are equipped with baffles A110, which are used to provide certain protection for the upper and lower parts of the outer frame 100. The frame 200 is equipped with baffles B210, which are used to provide certain protection for the left and right parts of the outer frame 100. The aeration membrane assembly 400 is placed in the support frame 300.

[0035] Reference Figures 1 to 3 A directional module is installed at the docking position of the support frame 300 and the aeration membrane assembly 400. The directional module facilitates the docking of the aeration membrane assembly 400 onto the support frame 300. The directional module includes a docking channel 310 and a docking post A410. The docking channel 310 is milled on the inner edge of the support frame 300. The dimensions of the docking channel 310 gradually decrease from its entrance to its depth. The inner edge of the docking channel 310 is milled into a slope shape to facilitate the guiding effect of the docking post A410 into the depth of the docking channel 310, making it easier for the aeration membrane assembly 400 to dock onto the support frame 300. The docking post A410 is assembled on the outer contour of the aeration membrane assembly 400. The docking post A410 and the docking channel 310 are telescopically coordinated. After the docking post A410 moves to the depth of the docking channel 310, the aeration membrane assembly 400 can flip along the docking post A410. The aeration membrane assembly 400 is placed outside the support frame 300 and moved laterally. The docking post A410 is displaced on the support frame 300. When the docking post A410 moves to the docking channel 310, the sloped features of the inner edge of the docking channel 310 allow the docking post A410 to move to a deeper position in the docking channel 310, thus flipping another part of the aeration membrane assembly 400. At this point, the aeration membrane assembly 400 can be easily docked into the support frame 300, making the docking process more convenient. The above technology allows for precise and convenient docking between the aeration membrane assembly 400 and the support frame 300.

[0036] Reference Figure 5 , Figure 6 and Figure 7 The aeration membrane assembly 400 has a docking post B411 installed on the same side of the docking post A410, and the bearing frame 300 has a fan-shaped channel 311 milled on the same side of the docking channel 310. The width of the fan-shaped channel 311 matches the specifications of the docking post B411. When docking column A410 is in the middle of docking channel 310, the aeration membrane assembly 400 rotates around docking column A410. At this moment, docking column B411 can move into the fan-shaped channel 311. When docking column B411 moves to the deepest position of fan-shaped channel 311, the aeration membrane assembly 400 and the support frame 300 are in the best docking state, which can ensure that all sewage can be treated by the aeration membrane assembly 400.

[0037] Reference Figure 3 , Figure 4 , Figure 5 and Figure 8 The outer contour of the support frame 300 is provided with a limiting module, which includes an L-shaped base 420, a limiting channel 430 and an exit channel 440. The L-shaped base 420 is disposed on the outer contour of the support frame 300. The L-shaped base 420 has a reserved directional block 423 and a limiting channel 430. The docking column B411 moves telescopically in the limiting channel 430 and the exit channel 440. An elastic element A450 is installed at the edge of the L-shaped base 420. Another part of the elastic element A450 is docked with the support frame 300. A U-shaped frame 460 is disposed at the edge of the L-shaped base 420 away from the elastic element A450. A guide rail 421 is milled on the short side of the L-shaped seat 420, and an directional block 423 is mounted on the outer contour of the bearing frame 300. The directional block 423 moves in the guide rail 421. The limiting channel 430 is divided into a slope section A431 and a horizontal section A432. The slope section A431 and the horizontal section A432 are interconnected. When the docking column B411 reaches the horizontal section A432, it can limit its position. When the aeration membrane assembly 400 is not docked, the slope A431 and the entrance of the fan-shaped channel 311 are aligned. The docking column B411 reaches the slope A431 at the same time as it enters the fan-shaped channel 311. As the aeration membrane assembly 400 continues to rotate, the docking column B411 abuts against the inner edge of the slope A431, allowing the L seat 420 to move towards the A direction. At this moment, the elastic element A450 will change shape. When the docking column B411 moves to the intersection of the slope A431 and the horizontal part A432, and when the docking column B411 enters the horizontal part A432, the L seat 420 returns to its initial state under the action of the elastic element A450. At this moment, the position of the docking column B411 is limited, and the aeration membrane assembly 400 is also rotated to the optimal state.

[0038] Reference Figure 4 , Figure 8 , Figure 9 and Figure 11The lead-out channel 440 is divided into a slope section B441 and a horizontal section B442. Both the slope section B441 and the horizontal section B442 are milled on the L-base 420. The slope section B441 and the horizontal section B442 are interconnected. The horizontal section B442 and the horizontal section A432 are interconnected. The slope section B441 extends into the horizontal section B442. The limited module is hingedly equipped with an auxiliary rod 500, which can move the docking column B411 toward the slope side B441 when the aeration membrane group 400 moves into the outlet channel 440. An elastic element B is provided at the hinge position of the auxiliary rod 500 on the L-base 420. The auxiliary rod 500 is located in the middle of the limiting channel 430 and the lead-out channel 440. A locking block 510 is provided on the auxiliary rod 500, and a stop block 520 is installed on the L-base 420. After the position of the docking column B411 is defined, when a large amount of impurities are intercepted on the aeration membrane assembly 400, it is necessary to remove the aeration membrane assembly 400. By pulling the U-frame 460, the L-seat 420 is moved synchronously. The docking column B411 then moves in and out of the horizontal part A432. When the docking column B411 moves into the horizontal part B442, it can rotate the auxiliary rod 500. The locking block 510 gradually moves away from the stop block 520. When the docking column B411 moves to a position where it is misaligned with the auxiliary rod 500, the auxiliary rod 500 moves back to its initial position under the action of the elastic element B, and the locking block 510 also moves to the position of the stop block 520. The docking column B411 abuts against the auxiliary rod 500. When rod 500 is in position, elastic element A450 is deformed in conjunction with it. After the docking post B411 and auxiliary rod 500 are misaligned, elastic element A450 will react and move L seat 420 towards position B. At this moment, docking post B411 will contact the back of auxiliary rod 500. During this process, locking block 510 is in contact with stop block 520. At this moment, the range of motion of auxiliary rod 500 is limited. Under the abutment of elastic element A450 and the guiding action of auxiliary rod 500, docking post B411 can move into slope side B441. At this moment, the balance of aeration membrane group 400 is broken. At this moment, the aeration membrane group 400 is tilted relative to the bearing frame 300. At this time, the aeration membrane group 400 can be removed.

[0039] Reference Figure 4 and Figure 10 An extension seat 422 is installed on seat L 420; The support frame 300 is equipped with a stabilizing module, which includes an inner empty bag 620 and a storage space 621. The inner empty bag 620 is located on the inner edge of the support frame 300, and the middle part of the inner empty bag 620 is defined as the storage space 621. The outer contour of the support frame 300 is equipped with a supply module, which includes a fixed cylinder 600, an L-channel 610, a rubber disc 611, and a linkage column 612. The fixed cylinder 600 is disposed on the support frame 300. The L-channel 610 is connected to the part of the fixed cylinder 600 that is offset from the L-seat 420. The other part of the L-channel 610 passes through the support frame 300 and is connected to the inner empty bag 620. The rubber disc 611 moves in and out of the fixed cylinder 600. One side of the rubber disc 611 is connected to the linkage column 612. The part of the linkage column 612 that extends out of the fixed cylinder 600 is connected to one side of the extension seat 422. When the docking column B411 is in the horizontal part A432, the linkage column 612 is in a pressed state, and the fixed cylinder 600 replenishes the storage space 621, causing the inner empty bag 620 to bulge. At this time, the docking point of the aeration membrane group 400 and the support frame 300 can be further wrapped, which can ensure the stability of the docking between the aeration membrane group 400 and the support frame 300, and also eliminate the gap at the docking point. When the aeration membrane assembly 400 is removed, the L seat 420 moves toward the A direction, and the linkage column 612 also moves toward the A direction. At this moment, the storage space 621 collapses, making it easier for the aeration membrane assembly 400 and the support frame 300 to disconnect.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A membrane aeration biofilm reactor for advanced wastewater treatment, characterized in that: It includes an outer frame (100), a support frame (300), and an aeration membrane assembly (400). Multiple support frames (300) are mounted on the outer frame (100), and square frames (200) are hinged to the side of the outer frame (100). The upper and lower parts of the outer frame (100) are equipped with baffles A (110), the square frame (200) is equipped with baffles B (210), and the aeration membrane assembly (400) is placed in the support frame (300); An orientation module is installed at the docking position of the support frame (300) and the aeration membrane assembly (400). The orientation module includes a docking channel (310) and a docking post A (410). The docking channel (310) is milled on the inner edge of the support frame (300). The dimensions of the docking channel (310) gradually decrease from its entrance to its depth. The docking post A (410) is assembled on the outer contour of the aeration membrane assembly (400). The docking post A (410) and the docking channel (310) are in telescopic cooperation. The aeration membrane assembly (400) has a docking post B (411) installed on the same side of the docking post A (410), and the bearing frame (300) has a fan-shaped channel (311) milled on the same side of the docking channel (310). The width of the fan-shaped channel (311) matches the specifications of the docking post B (411). The outer contour of the support frame (300) is provided with a limiting module, the limiting module including an L-shaped seat (420), a limiting channel (430) and an exit channel (440). The L-shaped seat (420) is disposed on the outer contour of the support frame (300). The L-shaped seat (420) has a reserved directional block (423) and a limiting channel (430). The docking post B (411) moves in and out of the limiting channel (430) and the exit channel (440). The support frame (300) is equipped with a stabilizing module, which includes an inner empty bag (620) and a storage space (621). The inner empty bag (620) is located on the inner edge of the support frame (300), and the middle part of the inner empty bag (620) is defined as the storage space (621).

2. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: An auxiliary rod (500) is hinged to the defined module.

3. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: An elastic element A (450) is installed at the edge of the L-shaped base (420), and another part of the elastic element A (450) is connected to the support frame (300). A U-shaped frame (460) is arranged at the edge of the L-shaped base (420) away from the elastic element A (450).

4. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: The short side of the L-shaped base (420) is milled with a guide rail (421), and the outer contour of the bearing frame (300) is equipped with an directional block (423), which moves in and out of the guide rail (421).

5. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: The defined channel (430) is divided into a slope section A (431) and a horizontal section A (432), which are interconnected.

6. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: The lead-out channel (440) is divided into a slope section B (441) and a horizontal section B (442). Both the slope section B (441) and the horizontal section B (442) are milled on the L seat (420). The slope section B (441) and the horizontal section B (442) are interconnected. The horizontal section B (442) and the horizontal section A (432) are interconnected. The slope section B (441) extends into the horizontal section B (442).

7. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 2, characterized in that: The auxiliary rod (500) is provided with an elastic element B at the hinge position on the L seat (420). The auxiliary rod (500) is located in the middle of the limiting channel (430) and the lead-out channel (440). The auxiliary rod (500) is provided with a locking block (510). The L seat (420) is provided with a stop block (520).

8. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: An extension seat (422) is installed on the L-shaped seat (420).

9. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 1, characterized in that: The outer contour of the support frame (300) is equipped with a supply module, which includes a fixed cylinder (600), an L-channel (610), a rubber disc (611), and a linkage column (612). The fixed cylinder (600) is disposed on the support frame (300), and the L-channel (610) is connected to the part of the fixed cylinder (600) that is offset from the L-seat (420). Another part of the L-channel (610) passes through the support frame (300) and is connected to the inner empty bag (620).

10. The membrane aerated biofilm reactor for advanced wastewater treatment according to claim 9, characterized in that: The rubber disc (611) moves in and out of the fixed cylinder (600). One side of the rubber disc (611) is connected to a linkage column (612). The part of the linkage column (612) that extends out of the fixed cylinder (600) is connected to one side of the extension seat (422).

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