Method for assembling a membrane module

Abstract

The present disclosure relates to the field of membrane separation technology, and provides an assembly method of an assembled membrane module, comprising the following steps: placing a first number of membrane modules at intervals along a preset direction; connecting both ends of a purifying element in the membrane module by an upper mounting plate; connecting the remaining upper mounting plates with the above upper mounting plates end to end to form an upper frame; connecting both ends of an aeration element in the placed first number of membrane modules by a lower mounting plate; connecting the remaining lower mounting plates with the above lower mounting plates end to end to form a lower frame; connecting a second number of water collecting pipes in a plug-in manner to form a water collecting pipe line with both ends sealed, so that a water collecting opening on the water collecting pipe is in communication with a water outlet formed on the top of the purifying element in the membrane module and communicating with the inside of the purifying element; the second number is adjustable in cooperation with the first number; connecting a third number of gas supply pipes in a plug-in manner to form a gas supply pipe line with both ends sealed, so that a gas outlet on the gas supply pipe is in communication with the aeration element through the gas pipe line; the third number is adjustable in cooperation with the first number.

Description

[0001] This application is a divisional application of the invention patent application filed on April 26, 2024, with application number 202410513701.9 and invention title "Assembled membrane module and assembly method thereof". Technical Field

[0002] This disclosure relates to the field of membrane separation technology, and in particular to an assembly method for a modular membrane module. Background Technology

[0003] Membrane bioreactors (MBRs) are a novel and highly efficient wastewater treatment and reuse process that organically combines membrane separation technology with traditional biological wastewater treatment processes. They have been widely used in wastewater treatment projects both domestically and internationally. MBRs can treat wastewater into high-quality reclaimed water. Given the current scarcity of water resources and the urgent need for wastewater resource recovery and reuse, the advantages of MBRs are becoming increasingly apparent, making them one of the preferred technologies for wastewater treatment.

[0004] Currently, the number of connections between membrane modules and water and gas pipelines is mismatched during assembly, requiring adaptive modifications to the number of water and gas pipelines. This results in high processing costs, cumbersome manufacturing processes, a large workload, and a high risk of errors. Furthermore, the existing methods for installing water and gas pipelines to membrane modules are cumbersome, leading to low installation efficiency. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide an assembly method for a modular membrane module to solve the problems in the related art.

[0006] The first aspect of this disclosure provides a method for assembling a prefabricated membrane module, the method comprising the following steps:

[0007] The first number of membrane modules are placed at intervals along a predetermined direction;

[0008] The purification components in the first number of membrane modules are connected at both ends by an upper mounting plate; then the remaining upper mounting plates are connected end to end to form an upper frame.

[0009] The aeration elements in the first number of membrane modules are connected at both ends by a lower mounting plate; then the remaining lower mounting plates are connected end to end to form a lower frame.

[0010] The second number of water collection pipes are connected to form a water collection pipeline with both ends sealed, so that the water collection port on the water collection pipe is connected to the water outlet formed on the top of the purification element in the membrane module and communicates with its interior; the second number is adjustable in coordination with the first number.

[0011] The third number of air supply pipes are connected to form an air supply pipeline with sealed ends, so that the air outlet on the air supply pipe is connected to the aeration device through the gas pipeline; the third number is adjustable in coordination with the first number.

[0012] In an embodiment of the first aspect, each of the water collection pipes has at least one water collection port at its bottom that communicates with the water outlet formed at the top of the purification element; and / or, each of the air supply pipes has at least one air outlet at its bottom that communicates with the aeration element.

[0013] In an embodiment of the first aspect, the water collection pipe is plugged into or threadedly connected to another adjacent water collection pipe.

[0014] In an embodiment of the first aspect, at least one first seal is provided between the water collection pipe and another adjacent water collection pipe.

[0015] In an embodiment of the first aspect, the gas supply pipe is plugged into or threadedly connected to another adjacent gas supply pipe.

[0016] In an embodiment of the first aspect, at least one second seal is provided between the gas supply pipe and another adjacent gas supply pipe.

[0017] In an embodiment of the first aspect, the number of membrane components is the same as the number of water inlets of the water collection pipe and the number of air outlets of the air supply pipe.

[0018] In the first aspect of the embodiment, a water outlet is formed at the top of the water collection pipe located in the center of the water collection pipe, and an air inlet is formed at the top of the air supply pipe located in the center of the air supply pipe, and the air supply pipe communicates with the air supply pipe.

[0019] As described above, this disclosure relates to the field of membrane separation technology and provides an assembly method for a modular membrane module, comprising the following steps: placing a first number of membrane modules at intervals along a preset direction; connecting each end of a purification element in the membrane module to an upper mounting plate; connecting the remaining upper mounting plates end-to-end with the aforementioned upper mounting plates to form an upper frame; connecting each end of an aeration element in the first number of membrane modules to a lower mounting plate; connecting the remaining lower mounting plates end-to-end with the aforementioned lower mounting plates to form a lower frame; connecting a second number of water collection pipes to form a water collection pipeline with sealed ends, such that the water collection port on the water collection pipe is connected to the water outlet formed on the top of the purification element in the membrane module and communicates with its interior; the second number is adjustable in relation to the first number; connecting a third number of air supply pipes to form a gas supply pipeline with sealed ends, such that the air outlet on the air supply pipe is connected to the aeration element via a gas pipeline; the third number is adjustable in relation to the first number. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic diagram of the overall structure of an assembled membrane module according to an embodiment of this disclosure;

[0021] Figure 2 The diagram shown is a schematic representation of the overall structure of the membrane module in an embodiment of this disclosure;

[0022] Figure 3 The diagram shown is a cross-sectional view of the water collection pipeline in an embodiment of this disclosure;

[0023] Figure 4 The illustration shown is an embodiment of this disclosure. Figure 3 Enlarged view of A in the middle;

[0024] Figure 5 The diagram shown is a cross-sectional view of the gas supply pipeline in an embodiment of this disclosure;

[0025] Figure 6 The illustration shown is an embodiment of this disclosure. Figure 5 Enlarged view of B in the middle;

[0026] Figure 7 The diagram shown is a structural schematic of the assembled membrane module in an embodiment of this disclosure;

[0027] Figure 8 The diagram shown is a flowchart of the assembly method in an embodiment of this disclosure. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0029] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0030] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0031] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0032] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0033] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0034] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0035] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0036] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0037] Figure 1 The diagram shown is a schematic diagram of the overall structure of an assembled membrane module according to an embodiment of this disclosure. Figure 2 The diagram shown is a schematic representation of the overall structure of the membrane module 20 in an embodiment of this disclosure. Figure 1 and Figure 2 In this example, the prefabricated membrane module includes a frame 10, a first number of membrane modules 20, a water pipe assembly 31 forming a water collection pipe 30, and an air pipe assembly 41 forming an air supply pipe 40. The first number of membrane modules 20 are detachably and spaced apart within the frame 10 along a predetermined direction. Exemplarily, the first number is adjustable. Exemplarily, the predetermined direction may be the length direction of the frame 10; in another embodiment, the predetermined direction may also be another direction. Each membrane module 20 includes a purification element 21 and an aeration element 22 disposed at the bottom of the purification element 21. Exemplarily, the aeration element 22 is detachably disposed at the bottom of the purification element 21, facilitating individual replacement or maintenance of the purification element 21 or the aeration element 22 later, thus reducing the overall replacement cost.

[0038] exist Figure 1 and Figure 2 In the example, the water pipe assembly 31 includes a second number of removably and sealingly connected water collection pipes 311. This second number corresponds to the first number, allowing each membrane assembly 20 to communicate with a corresponding water collection pipe 311 for the purified liquid from the purification element 21 to flow into the water pipe assembly 31. In other words, the second number is adjustable in relation to the first number. The air pipe assembly 41 includes a third number of removably and sealingly connected air supply pipes 411. This third number corresponds to the first number, allowing each membrane assembly 20 to communicate with a corresponding air supply pipe 411. Figure 1 For example, the bottom of the air tube assembly 41 is provided with a plurality of air outlets 41101, and each of the air outlets 41101 of the air tube assembly 41 is connected to each of the aeration elements 22 via the connecting pipe 23 of the membrane assembly 20. That is to say, the third quantity is adjustable in coordination with the first quantity.

[0039] In this embodiment, a certain number of membrane modules 20 can be installed onto the frame 10 as needed. The number of water collection pipes 311 and air supply pipes 411 is then adjusted according to the number of membrane modules 20 to achieve communication between the water collection pipes 30 and the air supply pipes 40 and the membrane modules 20. Through modular assembly, customized configuration and assembly can be quickly performed according to actual quantity requirements. For example, the water pipe assembly 31 and the air pipe assembly 41 are sealed at both ends and have identical structures. Taking the water pipe assembly 31 as an example, the multiple water collection pipes 311 located in the middle are implemented as double-pass pipes 311A. Multiple water collection ports 31101 are formed at the bottom of the double-pass pipes 311A. For example, some double-pass pipes 311A ​​have two water collection ports 31101 at the bottom, while some double-pass pipes 311A ​​also have a water collection interface at the top. The water collection pipes 311 located at both ends of the water pipe assembly 31 are implemented as single-ended pipes 311B and sealing heads 311C. Some single-ended pipes 311B form one water collection port 31101 at their bottom, while others form two water collection ports 31101. The sealing head 311C does not have any water collection ports 31101 and only serves a sealing function. In this way, during assembly, workers can select the appropriate number and type of water collection pipes 311 according to the number of membrane components, and then assemble them into the required water pipe assembly 31. For example, if the number of membrane modules 21 is even, multiple double-ended pipes 311A ​​are first connected together, and then a single-ended pipe 311B with two water inlets 31101 at the bottom is inserted into one of the two ports connected by the multiple double-ended pipes 311A, or two sealing heads 311C are inserted into the two ports connected by the multiple double-ended pipes 311A, to form a closed water collection pipeline 30. As another example, if the number of membrane modules 21 is odd, multiple double-ended pipes 311A ​​are first connected together, and then a single-ended pipe 311B with one water inlet 31101 at the bottom is inserted into one of the ports connected by the multiple double-ended pipes 311A, and finally a sealing head 311C is inserted into the other port connected by the multiple double-ended pipes 311A, to form a closed water collection pipeline 30. The assembly method of the air pipe assembly 41 is the same as that of the water pipe assembly 31, so it will not be described in detail here. Therefore, the water collection pipe 30 and the air supply pipe 40 for use with membrane modules composed of different numbers of membrane modules 21 can be quickly assembled through this splicing and assembly method.When any one of the water collection pipes 311 or the air supply pipe 411 in the water collection assembly 31 and the air pipe assembly 41 leaks, the operator can simply remove the leaking water collection pipe 311 or the air supply pipe 411 and replace it with a water collection pipe 311 or the air supply pipe 411 of the same type (standard part or non-standard part). The operation is simple and the maintenance and replacement costs are low.

[0040] Existing modular membrane modules typically consist of a single tube with multiple interfaces at the bottom, offering a high degree of integration. However, this integrated design necessitates the fabrication of multiple water and air lines with varying numbers of interfaces when assembling membrane modules with different numbers of membrane modules. This results in higher production time and economic costs. Alternatively, excess interfaces on a longer water and air line can be sealed before assembly. However, since the water collection line 30 and air supply line 40 are submerged in liquid during actual use, this method is prone to leakage at the sealed interfaces, requiring shutdown and resealing. Furthermore, damage to any part of the water or air line necessitates replacement of the entire line, increasing maintenance workload, reducing efficiency, and raising maintenance and replacement costs. Therefore, the assembled membrane module in this embodiment can also reduce the time and economic cost of later maintenance and replacement.

[0041] Figure 3 The diagram shown is a cross-sectional view of the water collection pipe 30 in an embodiment of this disclosure. Figure 4 The illustration shown is an embodiment of this disclosure. Figure 3 A magnified view of A in the diagram. Figure 3 and Figure 4 In the example, exemplarily, the sealed connection is implemented as a plug-in connection. Exemplarily, one end of the water collection pipe 311 forms a first insertion portion 3111, and the other end forms a first receiving portion 3112. When two adjacent water collection pipes 311 are plugged in, the first insertion portion 3111 is inserted into the first receiving portion 3112 of the other water collection pipe. In another embodiment, the sealed connection can also be implemented as a threaded connection or a flange connection.

[0042] Figure 5 The diagram shown is a cross-sectional view of the gas supply line 40 in an embodiment of this disclosure. Figure 6 The illustration shown is an embodiment of this disclosure. Figure 5 A magnified view of B in the image. Figure 5 and Figure 6In this example, the sealed connection is exemplarily implemented as a plug-in connection. Exemplarily, one end of the air supply pipe 411 forms a second insertion portion 4111, and the other end forms a second receiving portion 4112. When two adjacent air supply pipes 411 are plugged in, the second insertion portion 4111 is inserted into the second receiving portion 4112 of the other air supply pipe 411. A guide structure (not shown in the figure) is also formed between the second insertion portion 4111 and the second receiving portion 4112 to ensure that the plurality of air outlets 41101 are linearly spaced along the same straight line. Correspondingly, a guide structure (not shown in the figure) is also formed between the first insertion portion 3111 and the first receiving portion 3112. In another embodiment, the sealed connection can also be implemented as a threaded connection or a flange connection.

[0043] exist Figure 3 and Figure 4 In the example, at least one first sealing element 312 is provided between the water collection pipe 311 and another adjacent water collection pipe 311. Exemplarily, multiple first sealing elements 312 are provided, spaced apart along the length of the water collection pipe 311 in the area where the first insertion portion 3111 and the first receiving portion 3112 overlap. After the multiple water collection pipes 311 are inserted, the first sealing element 312 deforms to fill a portion of the gap between two adjacent water collection pipes 311, thereby improving the sealing effect between the two adjacent water collection pipes 311.

[0044] exist Figure 5 and Figure 6 In the example, at least one second seal 412 is provided between the air supply pipe 411 and another adjacent air supply pipe 411. Exemplarily, multiple second seals 412 are provided, spaced apart along the length of the air supply pipe 411 in the area where the second insertion portion 4111 and the second receiving portion 4112 overlap. After the multiple air supply pipes 411 are inserted, the second seals 412 deform to fill a portion of the gap between two adjacent air supply pipes 411, thereby improving the sealing effect between the two adjacent air supply pipes 411. In another embodiment, the first seal 312 may also be implemented as a single seal, with the same length as the first insertion portion 3111. The second seal 412 may also be implemented as a single seal, with the same length as the second insertion portion 4111.

[0045] For example, since two adjacent membrane modules 20 are installed at intervals in the frame 10, the friction between the two adjacent water collection pipes 311 after connecting them to the two adjacent membrane modules 20 can prevent the two connected water collection pipes 311 from separating. Furthermore, when the water collection pipe 30 is subjected to an impact separation force, the two adjacent and fixed membrane modules 20 can keep the water collection pipe 311 inserted into the other water collection pipe 311, thereby preventing the two connected water collection pipes 311 from separating and improving the fixing effect between the two connected water collection pipes 311.

[0046] In another embodiment, the air collecting pipe 311 and the air supply pipe 411 are the same size, and the water collection port 31101 on the air collecting pipe 311 and the air outlet 41101 on the air supply pipe 411 have the same structure. Therefore, the air collecting pipe 311 can be connected to the aeration element 22 of the membrane module 20, and the air supply pipe 411 can be connected to the purification element 21 of the membrane module 20. That is to say, the air collecting pipe 311 and the air supply pipe 411 can be used interchangeably to further reduce manufacturing and maintenance costs.

[0047] Figure 7 The diagram shown is a structural schematic of the assembled membrane module 20 in an embodiment of this disclosure. Figure 7 In the example, each of the water collection pipes 311 has at least one water collection port 31101 at its bottom that communicates with the purification component 21. Exemplarily, each of the water collection pipes 311 has two water collection ports 31101 at its bottom that communicate with the purification component 21. Returning to... Figure 2 In the example, the top of the purification component 21 has a water outlet 2101 communicating with its interior. The water outlet 2101 is detachably connected to the water collection port 31101 at a corresponding position, allowing the purified liquid on the upper side of the purification component 21 to flow to the water collection pipe 30. Exemplarily, the water collection port 3101 is also connected to the bottom side of the interior of the purification component 21 via a liquid pipe, allowing the purified liquid on the lower side of the purification component 21 to flow to the water collection pipe 30. Each air supply pipe 411 has at least one air outlet 41101 communicating with the aeration component 22 at its bottom. Exemplarily, each air supply pipe 411 has two air outlets 41101 communicating with the purification component 21 at its bottom. Exemplarily, the air outlets 41101 are detachably connected to the purification component 21. Each air outlet 41101 of the air pipe assembly 41 is connected to each aeration element 22 via the gas pipe of the membrane assembly 20. That is, the number of membrane assemblies 20 is the same as the number of water collection ports 31101 of the water collection pipe 311 and the number of air outlets 41101 of the air supply pipe 411.

[0048] exist Figure 7 In the example, the top of the water collection pipe 311, located at the center of the water pipe assembly 31, forms a water outlet 31102 that communicates with the water collection pipeline 30. The water outlet 31102 is connected to an external water pump or other device. The top of the air supply pipe 411, located at the center of the air pipe assembly 41, forms an air inlet 41102 that communicates with the air supply pipeline 40. The air inlet 41102 is connected to an external gas source. It is understood that when assembling the water collection pipeline 30 and the air supply pipeline 40, the user can add or remove sections of the water collection pipe 311 and the air supply pipe 411 to ensure that the water outlet 31102 and the air inlet 41102 are always in a centered position, thus maintaining a uniform gas supply; and simultaneously avoiding the problem of some membrane modules 20 being too close or too far apart, resulting in excessive or insufficient water production. For example, the water outlet 31102 and the air inlet 41102 are connected to the outside via flange connections.

[0049] exist Figure 7 In the example, the frame 10 includes an upper frame 11 and a lower frame 12. Exemplarily, the upper frame 11 includes four upper mounting plates 111, which are connected end-to-end to form the upper assembly space 1101. The purification component 21 is detachably installed in the upper assembly space 1101. Exemplarily, the lower frame 12 includes four lower mounting plates 121, which are connected end-to-end to form the lower assembly space 1201. The aeration component 22 is detachably installed in the lower assembly space 1201. Further exemplarily, the installation method of the purification component 21 to the upper frame 11 and the installation method of the aeration component 22 to the lower frame 12 are both screws. In another embodiment, the installation method of the purification component 21 to the upper frame 11 and the installation method of the aeration component 22 to the lower frame 12 can also be a snap-fit ​​structure or a bolt structure. Figure 7 In the example, the bottom of the lower frame 12 is also provided with multiple support legs 122 to prevent the aeration element 22 from contacting the pool bottom. This avoids the aeration element 22 from malfunctioning due to contact with the pool bottom. In another embodiment, the upper frame 11 and the lower frame 12 can also be connected by multiple connecting rods (not shown in the figure) to enhance overall strength.

[0050] For example, when only a portion of the membrane module 20 is assembled within the frame 10, a placement space is formed between the frame 10 and the outermost membrane module 20. This placement space can accommodate components that cooperate with the membrane module. For instance, when only a portion of the membrane module 20 is assembled within the frame 10, workers can install installation tools located outside the upper frame 11 into the placement space. Since the installation tools are no longer exposed, this makes it more convenient for workers to use the prefabricated membrane module.

[0051] Figure 8 The diagram shown is a flowchart of an assembly method according to an embodiment of this disclosure. Figure 8 In the example, the assembly method of the membrane module provided in this disclosure includes the following steps:

[0052] The first number of membrane components 20 are placed at intervals along the preset direction;

[0053] The first number of membrane modules 20 arranged in a row are connected at both ends by an upper mounting plate 111; then the remaining upper mounting plates 111 are connected end to end to form the upper frame 11; the lower frame 12 is installed in the same way as the upper frame 11.

[0054] The second number of water collection pipes 311 are connected to form a water collection pipeline 30 with both ends sealed, so that the water collection port 31101 on the water collection pipe 311 is connected to the water outlet 2101 on the membrane module 20; the second number is adjustable in coordination with the first number.

[0055] The third number of air supply pipes 411 are connected to form an air supply pipeline 40 with both ends sealed, so that the air outlet 41101 on the air supply pipe 411 is connected to the aeration element 22 through the gas pipeline; the third number is adjustable in accordance with the first number.

[0056] In summary, this disclosure provides a prefabricated membrane module and its assembly method, including a frame; a first number of membrane modules, detachably and spaced apart in the frame along a predetermined direction, each membrane module including a purification element and an aeration element disposed at the bottom of the purification element; the first number is adjustable; a water collection pipeline including a water pipe assembly sealed at both ends, the water pipe assembly including a second number of water collection pipes detachably and sealedly connected; the second number cooperates with the first number; so that each membrane module can communicate with a water collection pipe at a corresponding position for the supply of the membrane module. The purified liquid flows to the water pipe assembly; the second quantity is adjustable in relation to the first quantity; the air supply pipeline includes an air pipe assembly sealed at both ends, the air pipe assembly including a third quantity of air supply pipes detachably and sealed; the third quantity is coordinated with the first quantity; so that each membrane assembly can communicate with an air supply pipe at a corresponding position; the air pipe assembly is provided with multiple air outlets, the air outlets of the air pipe assembly are connected to the aeration element via the gas pipeline of the membrane assembly; the third quantity is adjustable in relation to the first quantity. In this embodiment, a certain number of membrane assemblies can be installed on the frame. Then, the number of water collection pipes and air supply pipes is adjusted according to the number of membrane assemblies to achieve communication between the water collection pipeline and the air supply pipeline and the membrane assemblies. Through standardized and modular assembly, customized configuration and assembly can be quickly carried out according to actual quantity requirements.

[0057] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A method for assembling a prefabricated membrane module, characterized in that, The assembly method of the membrane module includes the following steps: The first number of membrane modules are placed at intervals along a predetermined direction; The purification components in the first number of membrane modules are connected at both ends by an upper mounting plate; then the remaining upper mounting plates are connected end to end to form an upper frame. The aeration elements in the first number of membrane modules are connected at both ends by a lower mounting plate; then the remaining lower mounting plates are connected end to end to form a lower frame. The second number of water collection pipes are connected to form a water collection pipeline with both ends sealed, so that the water collection port on the water collection pipe is connected to the water outlet formed on the top of the purification element in the membrane module and communicates with its interior; the second number is adjustable in coordination with the first number. The third number of air supply pipes are connected to form an air supply pipeline with sealed ends, so that the air outlet on the air supply pipe is connected to the aeration device through the gas pipeline; the third number is adjustable in coordination with the first number.

2. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, Each of the water collection pipes has at least one water collection port at its bottom that communicates with the water outlet formed at the top of the purification element; and / or, each of the air supply pipes has at least one air outlet at its bottom that communicates with the aeration element.

3. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, The water collection pipe is connected to the adjacent water collection pipe by plugging or threading.

4. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, At least one first seal is provided between the water collection pipe and the adjacent water collection pipe.

5. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, The gas supply pipe is connected to the adjacent gas supply pipe by plugging or threading.

6. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, At least one second seal is provided between the gas supply pipe and the adjacent gas supply pipe.

7. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, The number of membrane modules is the same as the number of water inlets of the water collection pipe and the number of air outlets of the air supply pipe.

8. The assembly method of the prefabricated membrane module according to claim 1, characterized in that, A water outlet is formed at the top of the water collection pipe located in the center of the water collection pipe, which is connected to the water collection pipe; an air inlet is formed at the top of the air supply pipe located in the center of the air supply pipe, which is connected to the air supply pipe.

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