MBR curtain membrane module and sewage treatment device

Abstract

The utility model relates to a kind of MBR curtain type membrane group unit and sewage treatment device, membrane group unit includes first water pipe, second water pipe, MBR membrane assembly, support frame, first water pipe is located above second water pipe, and first water pipe is communicated with second water pipe by communicating pipe communication;MBR membrane assembly is communicated between first water pipe and second water pipe, and MBR membrane assembly includes first membrane shell, second membrane shell, membrane filament, first membrane shell is located above second membrane shell, and the upper end, lower end of membrane filament is respectively communicated with first membrane shell, second membrane shell, and first membrane shell, second membrane shell is respectively with first water pipe, second water pipe detachable seal communication;Water outlet is provided on first water pipe, and water outlet is located in the middle of first water pipe.The MBR curtain type membrane group unit provided by the utility model is detachable and easy to install, with high flexibility, easy to transport and on-site assembly after disassembly, and convenient for storage;The consistency of membrane assembly water production and the two sides of backwashing distribution, reach the stability of membrane assembly overall operation.

Description

Technical Field

[0001] This utility model relates to an MBR curtain membrane module and a wastewater treatment device. Background Technology

[0002] MBR (Membrane Bioreactor) is a novel and highly efficient wastewater treatment process that combines efficient membrane separation technology with the traditional activated sludge process. The MBR system uses a hollow fiber ultrafiltration membrane as its central treatment unit. The MBR membrane frame assembly is placed in an aeration tank. The treated liquid flows through the membrane surface at a certain velocity. Water molecules permeate through the membrane under a certain suction force, while suspended solids, colloids, large organic molecules, and microorganisms are trapped, thus achieving purification and separation. The addition of an aeration system further enhances the bioreactor efficiency of the MBR membrane.

[0003] MBR membranes are fixedly mounted on the MBR membrane frame during use and need to be pre-installed at the factory, resulting in a large volume that is inconvenient for transportation and storage. Furthermore, conventional MBR membrane frames are made of welded metal, but during use, the high salt content, chloride ions, or strong acidity and oxidizing properties of the medium often cause these metal MBR membrane frames to be easily corroded, affecting their service life.

[0004] In conventional MBR curtain membrane modules on the market, the water production method is usually water output from one side of the membrane housing. This often results in uneven water production per membrane module. This is because the relative suction force of the membrane fibers near the suction port on one side of the membrane housing is greater, resulting in a higher suction flux for water production in that area of ​​the membrane module. Similarly, when the system backwashes the membrane module, the flux is unevenly distributed to the membrane fibers due to the one-sided water intake, leading to more severe fouling of the membrane fibers near the suction port of the membrane housing. Utility Model Content

[0005] The purpose of this invention is to provide an MBR curtain membrane module and a wastewater treatment device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An MBR curtain membrane module includes a first water pipe, a second water pipe, an MBR membrane module, and a support frame. Both the first and second water pipes are mounted on the support frame, with the first water pipe positioned above the second water pipe and arranged parallel to it. The first and second water pipes are connected via a connecting pipe. The MBR membrane module is connected between the first and second water pipes. The MBR membrane module includes a first membrane shell, a second membrane shell, and membrane fibers. The first membrane shell is positioned above the second membrane shell and arranged parallel to it. The upper and lower ends of the membrane fibers are connected to the first and second membrane shells, respectively. The first and second membrane shells are detachably and sealingly connected to the first and second water pipes, respectively. The first water pipe is perpendicular to the first membrane shell. The first water pipe is provided with a water outlet, which is located in the middle of the first water pipe; the first water pipe is provided with a water outlet, which is located in the middle of the first water pipe.

[0007] According to some embodiments of this utility model, the first membrane shell and the second membrane shell are detachably connected to the first water pipe and the second water pipe respectively through a flexible joint.

[0008] According to some embodiments of this utility model, the live joint is a threaded live joint or a socket live joint.

[0009] According to some embodiments of the present invention, the outer periphery of the nut of the union is provided with a groove recessed toward its center, and the groove extends along the axial direction of the nut.

[0010] According to some embodiments of this utility model, the union is sealed to the first water pipe and the second water pipe respectively by sealing rings.

[0011] According to some embodiments of the present invention, a first connecting portion is provided on the side of the first water pipe facing the first membrane shell and on the side of the second water pipe facing the second membrane shell, and a second connecting portion is provided on the side of the first membrane shell facing the first water pipe and on the side of the second membrane shell facing the second water pipe, and the first connecting portion and the adjacent second connecting portion are connected by a union joint.

[0012] According to some embodiments of this utility model, both the first connecting part and the second connecting part are made of ABS material.

[0013] According to some embodiments of this utility model, the water outlet end is provided with a water outlet flange, which is located on the side of the first water pipe away from the first membrane shell; the middle part of the first membrane shell and the middle part of the second membrane shell are respectively connected to the first water pipe and the second water pipe.

[0014] According to some embodiments of this utility model, the first membrane shell and the second membrane shell are respectively connected to the support frame by fasteners. The fasteners and the support frame are provided with corresponding mounting grooves. The fasteners and the support frame are connected by fasteners installed in the mounting grooves. The mounting grooves on the fasteners are embedded external hexagonal grooves.

[0015] Another technical solution adopted by this utility model is: A wastewater treatment apparatus, the wastewater treatment apparatus comprising the aforementioned MBR membrane module.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The MBR curtain membrane module provided by this utility model has a first membrane shell and a second membrane shell that are detachably and sealedly connected to the first water pipe and the second water pipe, respectively. This makes the entire MBR membrane module detachable and easy to install, highly flexible, and convenient for transportation and on-site assembly after disassembly. It also facilitates storage, reduces storage or transportation volume, and the overall structure of the membrane module is not only simple but also has good stability. A water outlet is provided on the first water pipe, which is located in the middle of the first water pipe. This ensures the consistency of water distribution on both sides of the MBR membrane module for production and backwashing, thereby achieving the overall stability of the membrane module operation. It also extends the cleaning cycle and slows down the rate of membrane module fouling. Attached Figure Description

[0017] Appendix Figure 1 A structural diagram from a first-view perspective of the MBR curtain membrane module provided by this utility model; Appendix Figure 2 A structural diagram from a second perspective of the MBR curtain membrane module provided by this utility model; Appendix Figure 3 A front view of the MBR curtain membrane module provided by this utility model; Appendix Figure 4 A side view of the MBR curtain membrane module provided by this utility model; Appendix Figure 5 A structural diagram from a first-view perspective of the support frame, first water pipe, and second water pipe of the MBR curtain membrane module provided by this utility model; Appendix Figure 6 A structural diagram from a second perspective of the support frame, first water pipe, and second water pipe of the MBR curtain membrane module provided by this utility model; Appendix Figure 7 Structural diagram of the MBR membrane module provided by this utility model for the MBR curtain membrane module; Appendix Figure 8 Structural diagram of the MBR membrane module and socket joint of the MBR curtain membrane module provided by this utility model; Appendix Figure 9The structural diagram of the MBR membrane module and threaded connector of the MBR curtain membrane module provided by this utility model.

[0018] In the attached diagrams above: 1-First water pipe; 2-Second water pipe; 3-Connecting pipe; 4-Outlet flange; 5-Support frame; 51-First support, second support; 52-Connecting piece; 6-MBR membrane module, 61-first membrane shell, 62-second membrane shell, 63-membrane fiber; 7a-Threaded union; 7b-Socket union; 8-Fixing component; 9-First connecting part; 10-Second connecting part. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Example 1 See Figures 1 to 9 The MBR curtain membrane module shown includes a first water pipe 1, a second water pipe 2, an MBR membrane module 6, and a support frame 5, wherein: Both the first water pipe 1 and the second water pipe 2 are mounted on the support frame 5. The first water pipe 1 is located above the second water pipe 2. The first water pipe 1 and the second water pipe 2 are parallel to each other. The first water pipe 1 and the second water pipe 2 are connected by a connecting pipe 3. Both the first water pipe 1 and the second water pipe 2 can extend along the X-axis, and the connecting pipe 3 extends along the Z-axis.

[0022] The MBR membrane module 6 is connected between the first water pipe 1 and the second water pipe 2. The MBR membrane module 6 includes a first membrane shell 61, a second membrane shell 62, and membrane fibers 63. The first membrane shell 61 is located above the second membrane shell 62. The upper and lower ends of the membrane fibers 63 are connected to the first membrane shell 61 and the second membrane shell 62, respectively. See [link to documentation]. Figure 1-2The first membrane shell 61 and the second membrane shell 62 are parallel and both extend along the Y-axis, and the membrane filaments 63 extend along the Z-axis. Multiple membrane filaments 63 are provided between the first membrane shell 61 and the second membrane shell 62.

[0023] The first water pipe 1 is equipped with a water outlet, which is located in the middle of the first water pipe 1. This ensures the consistency of water distribution on both sides when the membrane module produces water, thereby achieving the overall stability of the membrane module operation; it also extends the cleaning cycle and slows down the rate of membrane module fouling; similarly, during system backwashing, it can make the backwash water volume more evenly distributed to the membrane fibers 63 of the membrane modules on both sides, making the internal rinsing of the membrane fibers 63 more thorough and uniform.

[0024] The first membrane housing 61 and the second membrane housing 62 are detachably and sealedly connected to the first water pipe 1 and the second water pipe 2, respectively. One type of detachable connection is that the first membrane housing 61 and the second membrane housing 62 are detachably connected to the first water pipe 1 and the second water pipe 2 through a union.

[0025] See Figure 5-6 7. A first connecting part 9 is provided on the side of the first water pipe 1 facing the first membrane shell 61 and the side of the second water pipe 2 facing the second membrane shell 62. A second connecting part 10 is provided on the side of the first membrane shell 61 facing the first water pipe 1 and the side of the second membrane shell 62 facing the second water pipe 2. The first connecting part 9 on the first water pipe 1 is connected to the second connecting part 10 on the adjacent first membrane shell 61 through a union joint. The first connecting part 9 on the second water pipe 2 is connected to the second connecting part 10 on the adjacent second membrane shell 62 through a union joint, which facilitates the installation or removal of the union joint. Both the first connecting part 9 and the second connecting part 10 are tubular.

[0026] Preferably, the union is sealed to the first connecting part 9 and the second connecting part 10 respectively by double-layer sealing rings, which can better ensure the sealing performance after assembly. Both the first connecting part 9 and the second connecting part 10 are made of ABS material, which is resistant to strong acids and alkalis, has stable properties, and has a longer service life.

[0027] In this example, the union is either a threaded union 7a or a socket union 7b, which can adapt to various installation scenarios. In some embodiments, the socket union 7b assembly includes a socket, a male thread, and a union nut, with the socket material being SUS304 stainless steel. The threaded union 7a includes a movable joint, a union nut, and a threaded connection joint. The inner ring of the union nut is threadedly connected to the outer ring of the threaded connection joint. During connection, the inner rings of the movable joint and the threaded connection joint are respectively threadedly connected to the outer rings of the first connecting part 9 and the second connecting part 10.

[0028] In this example, the outer periphery of the nut of the union is provided with a recessed groove that extends towards its center and extends axially along the nut.

[0029] In some embodiments, multiple MBR membrane modules 6 are provided, arranged in parallel, and correspondingly, multiple first connecting parts 9 and multiple second connecting parts 10 are provided. When multiple MBR membrane modules 6 are provided, the multiple MBR membrane modules 6 can be connected to the first water pipe 1 and the second water pipe 2 through threaded unions 7a and socket unions 7b, so that threaded unions 7a and socket unions 7b can be used simultaneously. At this time, the structures of the multiple first connecting parts 9 on the first water pipe 1 are different, and the structures of the multiple first connecting parts 9 on the second water pipe 2 are different. The first connecting parts 9 and the second connecting parts 10 are matched with the corresponding threaded unions 7a and socket unions 7b.

[0030] In another embodiment, the first connecting portion 9 of the first water pipe 1 facing the first membrane shell 61 is inserted into the second connecting portion 10 of the first membrane shell 61 facing the first water pipe 1, and the first connecting portion 9 of the second water pipe 2 facing the second membrane shell 62 is inserted into the second connecting portion 10 of the second membrane shell 62 facing the second water pipe 2.

[0031] In another embodiment, the first membrane housing 61 and the second membrane housing 62 are detachably and sealingly connected to the first water pipe 1 and the second water pipe 2, respectively, in the following manner: one of the first membrane housing 61 and the first water pipe 1 is provided with a groove, and the other is provided with a protrusion into which the groove can be inserted. Similarly, one of the second membrane housing 62 and the first water pipe 1 is provided with a groove, and the other is provided with a protrusion into which the groove can be inserted, with a through hole in the center of the protrusion. Since the membrane filament 63 is flexible, during installation, the grooves and protrusions on the first membrane housing 61 and the first water pipe 1 can be installed first, and then the grooves and protrusions on the second membrane housing 62 and the second water pipe 2 can be installed accordingly, making installation quick and convenient.

[0032] Preferably, the slot and the protrusion are sealed by a double-layer sealing ring, so that the first membrane shell 61 and the second membrane shell 62 are respectively sealed and connected to the first water pipe 1 and the second water pipe 2.

[0033] Preferably, an outlet flange 4 is provided at the outlet end. The outlet flange 4 is located on the side of the first water pipe 1 away from the first membrane housing 61. The middle part of the first membrane housing 61 and the middle part of the second membrane housing 62 are respectively connected to the first water pipe 1 and the second water pipe 2, which further ensures the consistency of water distribution on both sides of the MBR membrane module 6 for production and backwashing, thereby achieving the overall stability of the membrane module operation; extending the cleaning cycle and slowing down the rate of membrane module fouling.

[0034] In some embodiments, the first membrane shell 61 and the second membrane shell 62 are respectively connected to the support frame 5 via fasteners 8. The fasteners 8 and the support frame 5 have corresponding mounting grooves, and fasteners are installed in these mounting grooves to connect the fasteners 8 and the support frame 5. The mounting grooves on the fasteners 8 are preferably embedded hexagonal recesses, which better integrate with hexagonal bolts during fixing and greatly increase the stability of the fixation. The fasteners 8 are preferably made of one-piece injection-molded ABS material, which is resistant to strong acids and alkalis and has stable properties.

[0035] The support frame 5 in this example includes a first bracket, a second bracket 51, and connectors 52 connecting the first and second brackets. The first and second brackets are arranged opposite each other in a U-shape. The connectors 52 are perpendicular to the first and second brackets 51, and four connectors 52 are provided, two at the top and two at the bottom, resulting in a stable overall structure. The support frame 5 in this example is made of highly integrated stainless steel, which is easy to install and resistant to acids and alkalis.

[0036] In this example, the membrane fiber 63 is a reinforced hollow fiber membrane with a high-performance composite membrane structure: the core filtration layer is composed of high-precision inner membrane fiber 63 and a high-porosity, high-strength supporting sponge, which has excellent separation accuracy, flux and mechanical stability.

[0037] In this example, the MBR curtain membrane module operates with the following flow direction: [See attached diagram]. Figure 1 The middle arrow points to.

[0038] Example 2 This example provides a wastewater treatment device, which includes the MBR membrane module of Example 1.

[0039] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An MBR curtain membrane module, characterized in that, The system includes a first water pipe, a second water pipe, an MBR membrane module, and a support frame. Both the first and second water pipes are mounted on the support frame, with the first water pipe positioned above the second water pipe and arranged parallel to it. The first and second water pipes are connected via a connecting pipe. The MBR membrane module is connected between the first and second water pipes. The MBR membrane module includes a first membrane shell, a second membrane shell, and membrane fibers. The first membrane shell is positioned above the second membrane shell and arranged parallel to it. The upper and lower ends of the membrane fibers are connected to the first and second membrane shells, respectively. The first and second membrane shells are detachably and sealingly connected to the first and second water pipes, respectively. The first water pipe is perpendicular to the first membrane shell. The first water pipe is provided with a water outlet, which is located in the middle of the first water pipe.

2. The MBR curtain membrane module according to claim 1, characterized in that, The first membrane shell and the second membrane shell are detachably connected to the first water pipe and the second water pipe respectively through a union.

3. The MBR curtain membrane module according to claim 2, characterized in that, The union is either a threaded union or a socket union.

4. The MBR curtain membrane module according to claim 2, characterized in that, The nut of the union has a groove recessed toward its center on its outer periphery, and the groove extends along the axial direction of the nut.

5. The MBR curtain membrane module according to claim 2, characterized in that, The union is sealed to the first water pipe and the second water pipe respectively through sealing rings.

6. The MBR curtain membrane module according to claim 2, characterized in that, The first water pipe is provided with a first connecting part on the side facing the first membrane shell and the second water pipe is provided with a second connecting part on the side facing the first water pipe and the second membrane shell is provided with a second connecting part on the side facing the first water pipe and the second membrane shell is provided with a second connecting part. The first connecting part and the adjacent second connecting part are connected by a union joint.

7. The MBR curtain membrane module according to claim 6, characterized in that, Both the first connecting part and the second connecting part are made of ABS material.

8. The MBR curtain membrane module according to claim 1, characterized in that, The water outlet is provided with a water outlet flange, which is located on the side of the first water pipe away from the first membrane shell; the middle part of the first membrane shell and the middle part of the second membrane shell are respectively connected to the first water pipe and the second water pipe.

9. The MBR curtain membrane module according to claim 1, characterized in that, The first membrane shell and the second membrane shell are respectively connected to the support frame by fasteners. The fasteners and the support frame are provided with corresponding mounting grooves. The fasteners and the support frame are connected by fasteners installed in the mounting grooves. The mounting grooves on the fasteners are embedded external hexagonal grooves.

10. A wastewater treatment device, characterized in that, The wastewater treatment device includes the MBR membrane module according to any one of claims 1-9.

Images