Modular MBR membrane structure

Abstract

This utility model relates to the technical field of wastewater treatment devices, and in particular to a modular MBR membrane structure, including an upper cover, connecting pipes, and membrane bundle assemblies. A water collection pipe is provided on the top surface of the upper cover. The upper cover is fixedly connected to a lower cover via the connecting pipes. An aeration pipe is provided inside the lower cover. Both ends of the membrane bundle assembly are fixedly installed and connected to the upper and lower covers, respectively. This device, by adjusting the MBR membrane to a modular design, breaks down existing complete sets of equipment. The effluent pipe and aeration pipe are laid according to the parameters and dimensions of this modular MBR membrane structure and then connected to the water collection pipe and aeration pipe on the top surface of the device. This allows for flexible installation without the need for large hoisting equipment. The device is a single unit; simply closing and disconnecting the upper water collection pipe and aeration pipe allows for the disassembly, replacement, and maintenance of a single modular unit without shutting down the system, while also avoiding operations in confined spaces.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically to a modular MBR membrane structure. Background Technology

[0002] MBR (Membrane Bioreactor) is a new type of high-efficiency wastewater treatment process that combines high-efficiency membrane separation technology with traditional activated sludge biological treatment technology. Its core component, the membrane module, replaces the secondary sedimentation tank, realizing the integration of biochemical reaction and sludge-water separation.

[0003] Chinese utility model patent CN217473178U discloses a novel MBR membrane housing structure and MBR membrane module, including "a hollow membrane frame and a membrane housing assembly; the hollow membrane frame: a clear water pipe is provided at the liquid extraction hole on its upper surface; the membrane housing assembly: includes a connector, a support shell, and a positioning plate, wherein the connectors are movably inserted into the insertion holes on the upper and lower inner walls of the hollow membrane frame, and the connectors are all connected to the flow channels inside the hollow membrane frame; a support shell is provided between two longitudinally corresponding connectors, and a positioning plate is provided inside each support shell; hollow fiber membranes are uniformly distributed between two vertically corresponding positioning plates, and the interiors of the hollow fiber membranes are all connected to the interiors of the vertically corresponding support shells"; the membrane housing assembly of this device is connected to the hollow membrane frame by a connector, and then uniformly pressed and positioned by a pressure plate, which is convenient for disassembly;

[0004] The device is an integrated unit, and the complete set of equipment uses a frame. During normal operation, the membrane elements are submerged in sewage. During installation, the MBR membrane tank needs to be emptied before the complete MBR equipment is placed into the membrane tank, or the water needs to be released and transported using large hoisting equipment. When the equipment or one of the sets of equipment is damaged during use, the equipment must first be shut down, the membrane tank emptied, the water tank cleaned, and the confined space prepared before entering the tank for work. During maintenance, the entire equipment needs to be lifted out, and after maintenance, it can be hoisted and installed again and started up. Daily maintenance and repair are very inconvenient, and the practicality is poor. Utility Model Content

[0005] The purpose of this invention is to provide a modular MBR membrane structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular MBR membrane structure, including an upper end cover, a connecting pipe, and a membrane bundle assembly, wherein a water collection pipe is provided on the top surface of the upper end cover, and the upper end cover is fixedly connected to the lower end cover through the connecting pipe;

[0007] The lower end cover is provided with an aeration pipe inside, and the two ends of the membrane bundle assembly are fixedly connected to the upper end cover and the lower end cover respectively.

[0008] The upper cover has a water collection cavity inside, a water outlet on the top surface of the upper cover, a connecting hole on the bottom surface of the upper cover, and a water inlet in a circular array on the bottom surface of the upper cover. The top and bottom surfaces of the upper cover are respectively provided with through holes.

[0009] A partition plate is fixedly connected inside the lower end cover. A second connection hole is opened on the top surface of the lower end cover. Two water inlet holes are distributed in a circular array on the top surface of the lower end cover. Air inlet holes are distributed in a circular array inside the partition plate. Two through holes are opened vertically on the top surface of the lower end cover and the interior of the partition plate. A support is fixedly connected to the bottom surface of the lower end cover.

[0010] The membrane bundle assembly includes a hollow fiber membrane bundle, with mounting bases installed through both ends of the hollow fiber membrane bundle. An air inlet pipe is fixedly connected inside the mounting base, and a micro aerator is fixedly installed at the top end of the air inlet pipe.

[0011] The beneficial effects of this utility model are as follows: This device adjusts the MBR membrane to a modular design, breaking down the existing complete set of equipment. The water outlet pipe and aeration pipe can be laid according to the parameters and dimensions of this modular MBR membrane structure and then connected to the water collection pipe and aeration pipe on the top of the device. This allows for flexible installation without the need for large hoisting equipment. In actual use, the spacing of this device can be adjusted according to needs. This device is a single unit. Simply close the upper water collection pipe and aeration pipe and disconnect them to complete the disassembly, replacement, and maintenance of a single modular unit without stopping the machine. This also avoids working in confined spaces. Furthermore, the water collection pipe at the top is made of transparent material, which makes it easy to observe the water output of a single module. If wastewater is discharged, the problem can be detected and replaced in time without stopping the machine, and it does not affect the normal operation of wastewater purification.

[0012] To achieve the effect of centralized discharge of filtered purified water and facilitate the filtration process:

[0013] The upper end cover is further configured to be connected to the water collection pipe through a water outlet, and the wall of the water collection pipe is made of transparent material.

[0014] By adopting the above technical solution, the filtered and purified water in the water collection chamber is discharged through the water collection pipe, and the water collection pipe is made of transparent material to facilitate observation of the water output of individual modules.

[0015] To achieve the effect of separating water collection and ventilation inside the lower end cover, thus ensuring the smooth operation of the device:

[0016] The lower end cover is further configured such that its interior is divided into two independent cavities, an upper cavity and a lower cavity, by a partition plate.

[0017] By adopting the above technical solution, the interior of the lower end cover is divided into two independent cavities by a partition plate. The upper cavity is used to collect filtered clean water, and the lower cavity is used to vent compressed air through the aeration pipe. The compressed air is then introduced into the micro aerator through the air inlet pipe, and the micro aerator cleans the corresponding hollow fiber membrane bundles.

[0018] To achieve the effect of collecting and draining the clean water inside both the upper and lower end caps together:

[0019] The connection is further configured such that the two ends of the connecting pipe are connected to the water collection cavity inside the upper end cover and the upper cavity inside the lower end cover respectively through connecting hole one and connecting hole two.

[0020] By adopting the above technical solution, the upper end cover and the lower end cover are connected by a connecting pipe, so that the clean water collected in the water collection chamber and the upper chamber are discharged together into the water collection pipe through the connecting pipe.

[0021] To achieve the effect of cleaning hollow fiber membrane bundles using micro aerators:

[0022] The aeration pipe is further configured such that the outer wall of the upper end of the aeration pipe passes through the first through hole and is disposed inside the upper end cover, and the aeration pipe passes through the second through hole and is connected to the lower cavity inside the lower end cover.

[0023] By adopting the above technical solution, compressed air is injected into the lower end cover and into the lower cavity through the aeration pipe, and then introduced into the micro aerator through the air inlet pipe. The micro aerator cleans the corresponding hollow fiber membrane bundles.

[0024] To achieve the effect of centralized collection of clean water filtered by hollow fiber membrane bundles:

[0025] The hollow fiber membrane bundle is further configured such that the outer sidewalls of the mounting bases at both ends are respectively connected to the inner sidewalls of the water inlet hole one and the water inlet hole two, and the hollow fiber membrane bundle is respectively connected to the upper cavity inside the water collection cavity and the lower end cover.

[0026] By adopting the above technical solution, the clean water filtered by the hollow fiber membrane bundle is introduced into the water collection chamber and the upper chamber through both ends of the hollow fiber membrane bundle, thereby collecting the filtered clean water in a centralized manner.

[0027] To achieve the simultaneous introduction of compressed air from the aeration pipe into the micro aerators:

[0028] Further configuration: the air inlet is located directly below the water inlet, and the air inlet pipe is connected to the lower cavity inside the lower end cover through the air inlet.

[0029] By adopting the above technical solution, compressed air that is introduced into the lower cavity through the aeration pipe is simultaneously introduced into the micro aerator through the air inlet pipe, thereby aerating and cleaning the hollow fiber membrane bundle through the micro aerator.

[0030] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the connecting pipe of this utility model;

[0033] Figure 3 This is a cross-sectional view of the upper end cap of this utility model;

[0034] Figure 4 This is a cross-sectional structural diagram of the lower end cap of this utility model;

[0035] Figure 5 This is a schematic diagram of the hollow fiber membrane bundle of this utility model;

[0036] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0037] In the diagram: 1. Upper end cap; 11. Water collection chamber; 12. Water outlet; 13. Connection hole one; 14. Water inlet hole one; 15. Through hole one; 2. Water collection pipe; 3. Connecting pipe; 4. Lower end cap; 41. Divider plate; 42. Connection hole two; 43. Water inlet hole two; 44. Air inlet; 45. Through hole two; 46. Support; 5. Aeration pipe; 6. Membrane bundle assembly; 61. Hollow fiber membrane bundle; 62. Mounting base; 63. Air inlet pipe; 64. Micro aerator. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0039] Please see Figures 1 to 6 A modular MBR membrane structure includes an upper end cover 1, a connecting pipe 3, and a membrane bundle assembly 6. The top surface of the upper end cover 1 is provided with a water collection pipe 2, and the upper end cover 1 is fixedly connected to the lower end cover 4 through the connecting pipe 3.

[0040] The lower end cover 4 is equipped with an aeration pipe 5 inside, and the two ends of the membrane bundle assembly 6 are fixedly connected to the upper end cover 1 and the lower end cover 4 respectively.

[0041] The upper cover 1 has a water collection cavity 11 inside, a water outlet 12 on the top surface of the upper cover 1, a connecting hole 13 on the bottom surface of the upper cover 1, and water inlet holes 14 arranged in a circular array on the bottom surface of the upper cover 1. The top and bottom surfaces of the upper cover 1 are respectively provided with through holes 15.

[0042] A partition plate 41 is fixedly connected inside the lower end cover 4. A second connection hole 42 is opened on the top surface of the lower end cover 4. A second water inlet hole 43 is distributed in a circular array on the top surface of the lower end cover 4. An air inlet hole 44 is distributed in a circular array inside the partition plate 41. A second through hole 45 is opened on the top surface of the lower end cover 4 and the interior of the partition plate 41, corresponding to each other. A support 46 is fixedly connected to the bottom surface of the lower end cover 4.

[0043] The membrane bundle assembly 6 includes a hollow fiber membrane bundle 61, with mounting bases 62 installed through both ends of the hollow fiber membrane bundle 61. An air inlet pipe 63 is fixedly connected inside the mounting base 62, and a micro aerator 64 is fixedly installed at the top of the air inlet pipe 63.

[0044] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the upper cover 1 is connected to the water collection pipe 2 through the water outlet 12, and the wall of the water collection pipe 2 is made of transparent material.

[0045] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the interior of the lower end cover 4 is divided into two independent cavities, an upper cavity and a lower cavity, by a partition plate 41.

[0046] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the two ends of the connecting pipe 3 are connected to the water collection cavity 11 inside the upper end cover 1 and the upper cavity inside the lower end cover 4 through connecting hole 13 and connecting hole 42 respectively.

[0047] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the outer wall of the upper end of the aeration pipe 5 passes through the through hole 15 and is disposed inside the upper end cover 1, and the aeration pipe 5 passes through the through hole 45 and is connected to the lower cavity inside the lower end cover 4.

[0048] In this embodiment, as Figure 3 , Figure 4 and Figure 6As shown, the hollow fiber membrane bundle 61 is installed and connected to the inner sidewalls of the water inlet hole 14 and the water inlet hole 2 43 through the outer sidewalls of the mounting bases 62 at both ends, and the hollow fiber membrane bundle 61 is connected to the upper cavity inside the water collection cavity 11 and the lower end cover 4, respectively.

[0049] In this embodiment, as Figure 4 and Figure 6 As shown, the air inlet 44 is located directly below the water inlet 43, and the air inlet pipe 63 is connected to the lower cavity inside the lower end cover 4 through the air inlet 44.

[0050] The modular MBR membrane structure operates as follows:

[0051] First, place a single module of this device at the bottom of the sewage tank and install it by connecting it to the support 46 on the bottom surface. Then, connect it to the external water inlet pipe and compressed air device through the water collection pipe 2 and aeration pipe 5 on the top surface. This completes the installation of the device.

[0052] In use, the sewage in the sewage tank is filtered and purified through the hollow fiber membrane bundle 61. The purified clean water is introduced into the water collection chamber 11 and the upper chamber inside the lower end cover 4 through the mounting bases 62 at both ends of the hollow fiber membrane bundle 61, thereby collecting the clean water in a concentrated manner. The clean water inside the lower chamber is connected to the water collection chamber 11 through the connecting pipe 3 and is pumped out and discharged together through the water collection pipe 2, realizing the sewage purification-discharge process.

[0053] When the hollow fiber membrane bundle 61 filters sewage, compressed air is introduced into the lower chamber through the aeration pipe 5 and simultaneously introduced into the micro aerator 64 through the air inlet pipe 63. The micro aerator 64 aerates and cleans the corresponding hollow fiber membrane bundle 61 while preventing sludge accumulation at the bottom of the device.

[0054] The micro aerator 64 uses an existing jet aerator, and the hollow fiber membrane bundle 61 is composed of multiple hollow fiber membrane filaments. Both the jet aerator and the hollow fiber membrane are mature technologies in the field and are well-known existing technologies that have been fully disclosed. Therefore, they will not be repeated in the specification.

[0055] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0056] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A modular MBR membrane structure, comprising an upper end cap (1), a connecting tube (3), and a membrane bundle assembly (6), characterized in that: The top surface of the upper end cover (1) is provided with a water collection pipe (2), and the upper end cover (1) is fixedly connected to the lower end cover (4) through a connecting pipe (3); The lower end cover (4) is provided with an aeration pipe (5), and the two ends of the membrane bundle assembly (6) are fixedly connected to the upper end cover (1) and the lower end cover (4) respectively. The upper end cover (1) has a water collection cavity (11) inside, a water outlet (12) on the top surface of the upper end cover (1), a connecting hole (13) on the bottom surface of the upper end cover (1), a water inlet (14) in a circular array on the bottom surface of the upper end cover (1), and through holes (15) corresponding to each other on the top and bottom surfaces of the upper end cover (1). The lower end cover (4) is fixedly connected to a partition plate (41). The top surface of the lower end cover (4) is provided with a second connection hole (42). The top surface of the lower end cover (4) is provided with a second water inlet hole (43) arranged in a circular array. The interior of the partition plate (41) is provided with a second air inlet hole (44) arranged in a circular array. The top surface of the lower end cover (4) and the interior of the partition plate (41) are provided with two through holes (45) corresponding to each other. The bottom surface of the lower end cover (4) is fixedly connected to a support (46). The membrane bundle assembly (6) includes a hollow fiber membrane bundle (61), and mounting bases (62) are installed through both ends of the hollow fiber membrane bundle (61). An air inlet pipe (63) is fixedly connected inside the mounting base (62), and a micro aerator (64) is fixedly installed at the top end of the air inlet pipe (63).

2. The modular MBR membrane structure as described in claim 1, characterized in that: The upper end cap (1) is connected to the water collection pipe (2) through the water outlet (12), and the wall of the water collection pipe (2) is made of transparent material.

3. The modular MBR membrane structure as described in claim 1, characterized in that: The interior of the lower end cover (4) is divided into two independent cavities, an upper cavity and a lower cavity, by a partition plate (41).

4. A modular MBR membrane structure as described in claim 1, characterized in that: The two ends of the connecting pipe (3) are connected to the water collection cavity (11) inside the upper end cover (1) and the upper cavity inside the lower end cover (4) through connecting hole one (13) and connecting hole two (42), respectively.

5. A modular MBR membrane structure as described in claim 1, characterized in that: The outer wall of the upper end of the aeration pipe (5) passes through the first through hole (15) and is disposed inside the upper end cover (1), and the aeration pipe (5) passes through the second through hole (45) and is connected to the lower cavity inside the lower end cover (4).

6. A modular MBR membrane structure as described in claim 1, characterized in that: The hollow fiber membrane bundle (61) is installed and connected to the inner sidewalls of the first water inlet (14) and the second water inlet (43) respectively through the outer sidewalls of the mounting bases (62) at both ends, and the hollow fiber membrane bundle (61) is connected to the upper cavity inside the water collection cavity (11) and the lower end cover (4).

7. A modular MBR membrane structure as described in claim 1, characterized in that: The air inlet (44) is located directly below the water inlet (43) in a one-to-one correspondence. The air inlet pipe (63) is connected to the lower cavity inside the lower end cover (4) through the air inlet (44).

Images