A configurable modular curtain MBR pulse aeration structure

Abstract

This utility model discloses a modular, configurable curtain-type MBR pulse aeration structure, including two end members and at least one aeration member disposed between the two end members. The two end members and the at least one aeration member are detachably connected by a tenon and mortise structure to form an aeration structure body. The aeration structure body has an inner cavity with a lower opening and a surrounding inner circumferential wall. The upper end of the surrounding inner circumferential wall is connected to the top wall of the inner cavity and is shorter than the circumferential wall of the inner cavity, dividing the inner cavity into an air inlet chamber and an aeration chamber. This utility model adopts a modular, configurable design. By combining different numbers of aeration members, the length of the aeration structure can be flexibly adjusted to adapt to curtain-type MBR membrane modules of various sizes, completely solving the installation difficulties caused by the fixed size of existing aerators.

Description

Technical Field

[0001] This utility model specifically relates to a modular curtain-type MBR pulse aeration structure. Background Technology

[0002] Submerged membrane bioreactor (MBR) technology has important applications in wastewater treatment, widely used for municipal wastewater treatment and reuse, high-concentration organic wastewater, recalcitrant industrial wastewater, and wastewater treatment in public health sensitive areas. Its core components include the bioreactor and the membrane module, which is mainly divided into two categories: hollow fiber membrane modules and flat sheet membrane modules. Hollow fiber membrane modules include curtain membrane modules, seaweed membrane modules, and membrane bundle membrane modules, while flat sheet membrane modules are divided into rigid flat sheet membranes and flexible flat sheet membranes. As a key component of the MBR system, the performance of the membrane module directly affects the treatment efficiency, and the aeration device is an important factor in the membrane module's resistance to fouling and energy consumption optimization.

[0003] Traditional aeration methods often employ perforated aeration, which is simple in structure and provides a constant air volume, but suffers from drawbacks such as easy clogging of the perforated pipes and high energy consumption. To improve this, the industry has proposed strong-weak or high-low aeration methods, using pipeline valve switching and PLC control to achieve periodic switching between high and low aeration levels, thereby reducing energy consumption. However, such solutions require two blowers, resulting in a complex piping system and demanding valve requirements, increasing maintenance difficulty and cost. In recent years, pulse aeration technology has gradually become mainstream. It achieves intermittent large-bubble aeration through continuous small-volume air intake, combined with the physical structure of the pulse aerator, effectively improving aeration efficiency and pollution resistance.

[0004] However, existing curtain-type MBR pulse aerators have significant shortcomings. First, their fixed size makes them unsuitable for curtain-type MBR membrane modules of different lengths, leading to installation difficulties and poor versatility. Second, the aerators only support single-end or double-end air inlet, lacking flexibility and failing to meet the needs of different membrane frames. Furthermore, their complex structure and fixed length require the creation of various molds for membrane modules of different sizes, increasing mold development difficulty, production costs, and timelines. Utility Model Content

[0005] The purpose of this invention is to provide a modular curtain-type MBR pulse aeration structure.

[0006] The technical solution of this utility model is as follows:

[0007] A modular, configurable curtain-type MBR pulse aeration structure includes two end members and at least one aeration member disposed between the two end members. The two end members and the at least one aeration member are detachably connected by a tenon and mortise structure to form an aeration structure body. The aeration structure body has an inner cavity with a lower opening and a surrounding inner peripheral wall. The upper end of the surrounding inner peripheral wall is connected to the top wall of the inner cavity and is shorter than the outer peripheral wall of the inner cavity, dividing the inner cavity into an air inlet chamber and an aeration chamber.

[0008] At least one of the two end members has an air inlet communicating with the air inlet chamber;

[0009] Each aeration component has at least one air collecting cup that is connected to the aeration chamber and is evenly distributed at equal intervals. Each air collecting cup has a bottom wall, and the periphery of the bottom wall extends upward to form a peripheral wall. The peripheral wall and the bottom wall form an air collecting chamber with an upper opening. The peripheral wall is connected and fixed to the aforementioned inner peripheral wall. At the same time, the top wall of each aeration component has at least one exhaust hole corresponding to at least one air collecting cup. The periphery of the exhaust hole extends toward the corresponding air collecting chamber to form an exhaust pipe that extends into and communicates with the air collecting chamber.

[0010] In a preferred embodiment of this utility model, the bottom wall of the gas collecting cup is provided with at least one row of mud passage holes.

[0011] More preferably, the diameter of the mud discharge hole is smaller than the diameter of the exhaust pipe.

[0012] In a preferred embodiment of the present invention, a plurality of spare exhaust holes are provided at the lower part of the outer peripheral wall of the inner cavity, and the plurality of spare exhaust holes are located below the lower end of the exhaust pipe.

[0013] In a preferred embodiment of the present invention, each of the two end components has an air inlet communicating with the air inlet chamber.

[0014] In a preferred embodiment of the present invention, an air distribution cover is further provided on the top of the aeration structure body. The air distribution cover has a plurality of aeration holes evenly provided on the two side walls corresponding to the exhaust holes along the length direction of the aeration structure body.

[0015] More preferably, the aeration holes are elongated, square, or circular in shape.

[0016] In a preferred embodiment of the present invention, at least one air collecting cup in the at least one aeration component is evenly distributed at equal intervals in the inner cavity.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model adopts a modular design that can be assembled. By combining different numbers of aeration components, the length of the aeration structure can be flexibly adjusted to adapt to curtain-type MBR membrane modules of various sizes, thus completely solving the installation problem caused by the fixed size of existing aerators.

[0019] 2. At least one of the two end components of this utility model has an air inlet communicating with the air inlet chamber, supporting single-end or double-end air intake. Users can select the appropriate air intake method according to the working conditions and membrane frame type, which enhances the adaptability and flexibility of the system. The double-end air intake can make aeration more uniform and improve the treatment efficiency of the MBR system.

[0020] 3. Compared with traditional aerators, this utility model only requires two end components and one aeration component to achieve its function. The structure is simple, the difficulty of mold opening and mold cost are significantly reduced, and the production and manufacturing costs are effectively reduced.

[0021] 4. This utility model adopts pulse aeration technology, which realizes intermittent large bubble aeration through continuous air intake with small volume and pulse structure, thereby improving aeration efficiency and anti-pollution ability, while reducing energy consumption.

[0022] 5. The lower part of the peripheral wall of the inner cavity of this utility model is provided with several spare exhaust holes. When the exhaust pipe is blocked by sludge, the gas can be discharged through the spare exhaust holes to ensure continuous aeration and avoid sludge accumulation in the MBR membrane module.

[0023] 5. This utility model is equipped with an air distribution hood, which achieves uniform air distribution through evenly distributed aeration holes. Its top wall sealing design reduces sludge falling into the air collection cup, thus improving the stability and reliability of the system.

[0024] 6. The bottom wall of the air collecting cup of this utility model is provided with a sludge discharge hole, which can effectively discharge the sludge entering the air collecting chamber, avoid blockage of the exhaust pipe, and ensure smooth aeration. Attached Figure Description

[0025] Figure 1 This is a front view of Embodiment 1 of this utility model.

[0026] Figure 2 This is a top view of Embodiment 1 of the present utility model.

[0027] Figure 3 This is a bottom view of Embodiment 1 of this utility model.

[0028] Figure 4 This is a cross-sectional view of the structure of Embodiment 1 of this utility model.

[0029] Figure 5 This is a cross-sectional view of the main body with a fabric hood according to Embodiment 1 of this utility model.

[0030] Figure 6This is a top view of Embodiment 2 of the present invention.

[0031] Figure 7 This is a top view of Embodiment 3 of the present invention. Detailed Implementation

[0032] The technical solution of this utility model will be further explained and described below with reference to specific embodiments and accompanying drawings.

[0033] Example 1

[0034] like Figures 1 to 4 As shown, a modular curtain-type MBR pulse aeration structure includes two end members 1 and seven aeration members 2 disposed between the two end members 1. The two end members and the seven aeration members 2 are detachably connected by a tenon and mortise structure 3 to form an aeration structure body 4. The aeration structure body 4 has an inner cavity 41 with a lower opening 410 and a surrounding inner peripheral wall 411. The upper end of the surrounding inner peripheral wall 411 is connected to the top wall of the inner cavity 41 and is shorter than the outer peripheral wall of the inner cavity 41, dividing the inner cavity 41 into an air inlet chamber 412 and an aeration chamber 413.

[0035] Both end members 1 have an air inlet 11 that communicates with the air inlet chamber 412;

[0036] like Figure 3 and Figure 4 As shown, each aeration component 2 has an air collecting cup 21 that communicates with the aeration chamber 413 and is located in the middle (preferably, all air collecting cups 21 are evenly distributed in the inner cavity 41 at equal intervals). The air collecting cup 21 has a bottom wall 210, and the periphery of the bottom wall 210 extends upward to form a peripheral wall 211. The peripheral wall 211 and the bottom wall 210 form an air collecting chamber 212 with an upper opening. The peripheral wall 211 is connected and fixed to the aforementioned surrounding inner peripheral wall 411. At the same time, the top wall of each aeration component 2 has an exhaust hole 22 corresponding to its air collecting cup 21. The periphery of the exhaust hole 22 extends toward the corresponding air collecting chamber 212 to form an exhaust pipe 23 that extends into and communicates with the air collecting chamber 212. A mud discharge hole 2101 is provided on the bottom wall 210 of the air collecting cup. The sludge discharge hole 2101 of the air collecting cup 21 is connected to the air collecting chamber 212 and the aeration chamber 413. Sludge entering the air collecting chamber 212 through the exhaust hole 22 will fall into the aeration chamber 413 through the sludge discharge hole 2101 of the air collecting cup 21. Since the bottom of the aeration chamber 413 is hollow, the sludge will further fall to the bottom of the membrane tank. In this way, the sludge will not accumulate in the air collecting chamber 212, avoiding the exhaust pipe 23 from being blocked by sludge and unable to aerate. Preferably, the sludge discharge hole 2101 of the air collecting cup 21 is circular or regular polygonal in shape, and its diameter is preferably smaller than the diameter of the exhaust pipe 23, so as not to disrupt the pulse aeration phenomenon.

[0037] The lower part of the outer peripheral wall of the aforementioned inner cavity 41 is provided with several spare vent holes 414, which are located below the lower end of the vent pipe 23. Under special circumstances, when the vent pipe 23 is blocked by sludge and aeration stops, gas can be discharged from the spare vent holes 414 to maintain aeration and prevent sludge accumulation in the MBR membrane module due to aeration stoppage.

[0038] like Figure 5 As shown, preferably, this embodiment also includes an air distribution hood 5 covering the aeration structure body 4. The air distribution hood 5 has a plurality of aeration holes 50 evenly distributed on its two side walls corresponding to the exhaust vents 22 along the length direction of the aeration structure body 4. The aeration holes 50 are preferably elongated, square, or circular in shape. The top wall of the air distribution hood 5 is sealed, reducing the amount of sludge falling into the air collection chamber 212 through the exhaust vents 22. Simultaneously, the aeration holes 50 on both sides of the air distribution hood 5 allow for uniform air distribution.

[0039] The present invention is submerged in sewage, and gas is introduced into the air inlet chamber 412 through the air inlet 11. The gas introduced into the air inlet chamber 412 continuously rises to the top wall of the aeration structure body 4. As the gas in the air inlet chamber 412 increases, the sewage level in the air inlet chamber 412 will continuously decrease. When the level drops to the bottom of the inner peripheral wall 411, since the inner peripheral wall 411 is shorter than the outer peripheral wall of the inner cavity 41, the gas enters the aeration chamber 413. As the gas in the aeration chamber 413 increases, the sewage level in the aeration chamber 413 will continuously decrease until the level in the aeration chamber 413 is level with the lower end of the exhaust pipe 23. At this point, the gas in the aeration chamber 413 enters the exhaust pipe 23 through the gas collecting cup 21 and is further discharged from the exhaust port 22. The gas is released instantaneously in the form of large bubbles, forming pulse aeration. At the same time as the gas is released from the aeration chamber 413, the liquid level rises again due to the siphon principle, and the sewage will refill the aeration chamber 413. Subsequently, gas is introduced into the air intake chamber 412 through the air inlet 11, and then sequentially enters the aeration chamber 413, the gas collection cup 21, and the exhaust pipe 23, finally being discharged from the exhaust port 22. This invention employs a small-volume continuous air intake and pulse aeration structure, continuously repeating the process of inflation, gas collection, and exhaust to form an intermittent large-bubble pulse aeration.

[0040] Example 2

[0041] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that the number of aeration components 2 is five.

[0042] Example 3

[0043] like Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the number of aeration components 2 is three.

[0044] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A configurable modular curtain MBR pulse aeration structure, characterized by: The device includes two end members and at least one aeration member disposed between the two end members. The two end members and the at least one aeration member are detachably connected by a tenon and mortise structure to form an aeration structure body. The aeration structure body has an inner cavity with a lower opening and a surrounding inner peripheral wall. The upper end of the surrounding inner peripheral wall is connected to the top wall of the inner cavity and is shorter than the outer peripheral wall of the inner cavity, dividing the inner cavity into an air inlet chamber and an aeration chamber. At least one of the two end members has an air inlet communicating with the air inlet chamber; Each aeration component has at least one air collecting cup that is connected to the aeration chamber and is evenly distributed at equal intervals. Each air collecting cup has a bottom wall, and the periphery of the bottom wall extends upward to form a peripheral wall. The peripheral wall and the bottom wall form an air collecting chamber with an upper opening. The peripheral wall is connected and fixed to the aforementioned inner peripheral wall. At the same time, the top wall of each aeration component has at least one exhaust hole corresponding to at least one air collecting cup. The periphery of the exhaust hole extends toward the corresponding air collecting chamber to form an exhaust pipe that extends into and communicates with the air collecting chamber.

2. A configurable modular curtain MBR pulse aeration structure as claimed in claim 1, wherein: The bottom wall of the gas collecting cup is provided with at least one row of mud passage holes.

3. A configurable modular curtain MBR pulse aeration structure as claimed in claim 2, wherein: The diameter of the mud discharge hole is smaller than the diameter of the exhaust pipe.

4. A configurable modular curtain MBR pulse aeration structure as claimed in claim 1, wherein: The lower part of the outer peripheral wall of the inner cavity is provided with several spare exhaust holes, which are located below the lower end of the exhaust pipe.

5. A configurable modular curtain MBR pulse aeration structure as claimed in claim 1, wherein: Both end members have an air inlet that communicates with the air inlet chamber.

6. A configurable modular curtain MBR pulse aeration structure as claimed in claim 1, wherein: It also includes an air distribution cover that is placed above the aeration structure body. The air distribution cover has a plurality of aeration holes that are evenly opened on the two side walls of the aeration structure body along the length direction, corresponding to the exhaust holes.

7. The modular curtain-type MBR pulse aeration structure as described in claim 6, characterized in that: The aeration holes are elongated, square, or circular in shape.

8. The modular curtain-type MBR pulse aeration structure as described in claim 1, characterized in that: At least one air collecting cup in the at least one aeration component is evenly distributed at equal intervals in the inner cavity.

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