A multifunctional membrane module and membrane module system

Abstract

This invention discloses a multifunctional membrane module and membrane system. The multifunctional membrane module includes a filtration module and a suspension module. The filtration module includes a water collection frame and several purification components installed within the water collection frame. The water collection frame has a fluid channel inside, and each purification component communicates with the fluid channel. A product water pipe is fixed to the water collection frame and communicates with the fluid channel. A connector is also fixed to the water collection frame and communicates with the fluid channel. The suspension module has a hollow structure and a lifting structure. The suspension module is detachably connected to the water collection frame. The product water pipe and the connector are arranged opposite to each other on both sides of the water collection frame, and the product water pipe can be socketed into the connector of another multifunctional membrane module. The multifunctional membrane module can switch between submerged and floating operation by detaching and assembling the suspension module. The product water pipe and connector can achieve relative fixation of multiple multifunctional membrane modules while simultaneously collecting and transporting filtered water.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a multifunctional membrane module and membrane module system. Background Technology

[0002] Membrane bioreactors (MBRs) are a novel wastewater treatment technology that organically combines ultrafiltration / microfiltration membrane separation with biological treatment processes. They are now widely used in municipal and industrial wastewater treatment and reuse. However, the widespread application of MBR technology still faces bottlenecks such as high energy consumption and difficulties in operation and maintenance. On the one hand, to address the high energy consumption of membrane fouling control, all the exhaust gas from the biological treatment tank can be collected and used as an air source for aeration of the membrane system, enabling the reuse of the exhaust gas. This could potentially reduce membrane aeration energy consumption to zero. On the other hand, traditional membrane modules typically use various connecting fittings to house the membrane components within a metal membrane frame, which is then fixed to the bottom of the membrane tank via positioning rails. This results in a complex system, membrane frame floating issues, uneven aeration, and sludge accumulation at the bottom of the membrane tank leading to aerator blockage, causing significant inconvenience for daily maintenance.

[0003] In addition, in practical applications, suspended membrane modules and membrane units require a combined aeration system as the interface, placing the membrane tank above the aerobic tank, and the biological aeration rate and membrane aeration rate need to be matched. This makes them unsuitable for the renovation of old projects and wastewater treatment projects with low biochemical oxygen demand.

[0004] In addition, some pollution control membrane modules are specifically designed for anaerobic environments with high pollution control requirements. They have strong sealing properties, but also suffer from inconvenient cleaning and limited service life.

[0005] Therefore, there is an urgent need to provide a multifunctional membrane module and membrane system that can solve the above problems. Summary of the Invention

[0006] To solve at least one of the above-mentioned technical problems, the present invention provides a multifunctional membrane module and membrane module system, the technical solution of which is as follows:

[0007] The multifunctional membrane module provided by this invention includes a filtration module and a suspension module. The filtration module includes a water collection frame and several purification components installed within the water collection frame. The water collection frame has a fluid channel inside, and each purification component communicates with the fluid channel. A product water pipe is fixed to the water collection frame and communicates with the fluid channel. A connector is also fixed to the water collection frame and communicates with the fluid channel. The suspension module is configured as a hollow structure and has a lifting structure. The suspension module is detachably connected to the water collection frame. The product water pipe and the connector are arranged opposite to each other on both sides of the water collection frame, and the product water pipe can be socketed and connected to the connector of another multifunctional membrane module.

[0008] In some embodiments of the present invention, the top of the water collection frame is provided with an anti-detachment track extending in the width direction, the suspension component is provided with a groove that cooperates with the anti-detachment track, and the suspension component is slidably installed on the water collection frame.

[0009] In some embodiments of the present invention, the filter assembly further includes a first positioning structure and a second positioning structure, wherein the first positioning structure and the second positioning structure are mounted opposite to each other on both sides of the water collection frame along the thickness direction, and the first positioning structure can be detachably connected to the second positioning structure of another multifunctional membrane assembly.

[0010] In some embodiments of the present invention, the filter assembly further includes a first dovetail tenon, the water collection frame is provided with a first dovetail groove, the first dovetail tenon and the first dovetail groove are installed opposite to each other on both sides of the water collection frame along the thickness direction, and the first dovetail tenon can be inserted and connected to the first dovetail groove of another multifunctional membrane assembly.

[0011] In some embodiments of the present invention, the water production pipe, the first positioning structure, and the first dovetail groove are arranged at intervals along the height direction on the same side of the water collection frame.

[0012] In some embodiments of the present invention, the filter assembly further includes a second dovetail tenon, the water collection frame is provided with a second dovetail groove, the second dovetail tenon and the second dovetail groove are installed opposite to each other on both sides of the water collection frame along the width direction, and the second dovetail tenon can be inserted and connected to the second dovetail groove of another multifunctional membrane assembly.

[0013] In some embodiments of the present invention, the filter assembly further includes a third positioning structure and a fourth positioning structure, the third positioning structure and the fourth positioning structure being mounted opposite to each other on both sides of the water collection frame along the width direction, and the third positioning structure being detachably connected to the fourth positioning structure of another multifunctional membrane assembly.

[0014] In some embodiments of the present invention, the hoisting structure includes a hoisting groove extending outward from the top of the suspension component, and a plurality of hoisting grooves are provided, which are symmetrically distributed on both sides of the suspension component along the width direction.

[0015] In some embodiments of the present invention, the purification element is a microfiltration membrane fiber or an ultrafiltration membrane fiber, and each purification element is cast into the water collection frame along the height direction.

[0016] The present invention also provides a membrane module system, which includes at least one row of integrated membrane modules. The integrated membrane module includes multiple aforementioned multifunctional membrane components, each of which is arranged at intervals along the thickness direction. Adjacent multifunctional membrane components are fixedly connected to the receiving joint via the permeate pipe. When each filter component is equipped with a suspension component, the membrane module system can float in the membrane tank for use. When each suspension component is removed, the membrane module system can be fixed at the bottom of the membrane tank for use.

[0017] The embodiments of the present invention have at least the following beneficial effects: The multifunctional membrane module incorporates a suspension component, which is detachably installed on the filter module to facilitate adjustment of the membrane system's usage. The multifunctional membrane module also has permeate pipes and connectors on both sides, allowing for the relative fixation of multiple multifunctional membrane modules while simultaneously collecting and transporting filtered water to external pipelines. The multifunctional membrane module can switch between submerged and floating operation modes by detaching and assembling the suspension component, resulting in a simplified structure. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the filtration component in a multifunctional membrane module;

[0020] Figure 2 This is a schematic diagram of the suspension component in a multifunctional membrane module;

[0021] Figure 3 This is a schematic diagram of a membrane module system with two rows of integrated membrane modules.

[0022] Figure 4 for Figure 3 A schematic diagram of the floating application of the provided membrane module system;

[0023] Figure 5 for Figure 3 A schematic diagram of the immersion use of the provided membrane module system.

[0024] Reference numerals: 100, Filter assembly; 110, Water collection frame; 111, Anti-detachment track; 121, Product water pipe; 122, Socket joint; 131, First positioning structure; 132, Second positioning structure; 141, First dovetail tenon; 142, First dovetail tenon; 151, Second dovetail tenon; 152, Second dovetail tenon; 161, Third positioning structure; 162, Fourth positioning structure; 170, Main product water interface; 200, Suspension assembly; 201, Lifting groove; 202, Slide groove; 300, Membrane module fixing device. Detailed Implementation

[0025] The following is combined Figures 1 to 5 Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the terms "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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 the invention. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Membrane bioreactors (MBRs) are a novel wastewater treatment technology that organically combines ultrafiltration / microfiltration membrane separation with biological treatment processes. They are now widely used in municipal and industrial wastewater treatment and reuse. However, the widespread application of MBR technology still faces bottlenecks such as high energy consumption and difficulties in operation and maintenance. On the one hand, to address the high energy consumption of membrane fouling control, all the exhaust gas from the biological treatment tank can be collected and used as an air source for aeration of the membrane system, enabling the reuse of the exhaust gas. This could potentially reduce membrane aeration energy consumption to zero. On the other hand, traditional membrane modules typically use various connecting fittings to house the membrane components within a metal membrane frame, which is then fixed to the bottom of the membrane tank via positioning rails. This results in a complex system, membrane frame floating issues, uneven aeration, and sludge accumulation at the bottom of the membrane tank leading to aerator blockage, causing significant inconvenience for daily maintenance.

[0029] In addition, in practical applications, suspended membrane modules and membrane units require a combined aeration system as the interface, placing the membrane tank above the aerobic tank, and the biological aeration rate and membrane aeration rate need to be matched. This makes them unsuitable for the renovation of old projects and wastewater treatment projects with low biochemical oxygen demand.

[0030] In addition, some pollution control membrane modules are specifically designed for anaerobic environments with high pollution control requirements. They have strong sealing properties, but also suffer from inconvenient cleaning and limited service life.

[0031] This invention provides a membrane module system comprising at least one row of integrated membrane modules, each integrated membrane module comprising multiple multifunctional membrane components. The multifunctional membrane components in the same integrated membrane module are arranged at intervals along the thickness direction, and adjacent multifunctional membrane components are fixedly connected relative to each other. When each filter component 100 is equipped with a suspension component 200, the membrane module system can float in the membrane tank for use, and cooperate with a combined aeration system to collect the exhaust gas of the biological tank to achieve aeration. When each suspension component 200 is removed, the membrane module system can switch to another usage mode, and be fixed at the bottom of the membrane tank for submerged use.

[0032] Furthermore, the distance between two adjacent multifunctional membrane modules in the same row of integrated membrane modules is greater than or equal to 20mm to ensure the water purification effect of the membrane module system.

[0033] In some embodiments, the submerged membrane module system also includes a membrane module fixing device 300. When the filter assembly 100 is used without the suspension assembly 200, the integrated membrane module is connected to the membrane module fixing device 300 to enhance the stability of the integrated membrane module at the bottom of the membrane tank. Specifically, the membrane module fixing device 300 is connected to the filter assembly using a detachable connection method such as a pin connection, threaded connection, or snap-fit ​​connection.

[0034] In some embodiments, the integrated membrane modules are arranged in two rows. Referring to the accompanying drawings, the two rows of integrated membrane modules are arranged side by side along the width direction of the multifunctional membrane module, improving the processing efficiency of the membrane module system. It is understood that the membrane module system can also be configured with three or more integrated membrane modules side by side according to actual usage requirements.

[0035] Other components and operations of the membrane module system are already described in the relevant art for those skilled in the art, and will not be described in detail here. The structure of the multifunctional membrane module will be introduced below.

[0036] The multifunctional membrane module provided by this invention includes a filtration module 100 and a suspension module 200. The filtration module 100 includes a water collection frame 110 and several purification components installed within the water collection frame 110. The water collection frame 110 has a fluid channel inside, and each purification component communicates with the fluid channel. A product water pipe 121 is fixed to the water collection frame 110, communicating with the fluid channel. A connector 122 is also fixed to the water collection frame 110, communicating with the fluid channel. The suspension module 200 has a hollow structure and a lifting structure. The suspension module 200 is detachably connected to the water collection frame 110. The product water pipe 121 and the connector 122 are arranged opposite to each other on both sides of the water collection frame 110, and the product water pipe 121 can be socketed into the connector 122 of another multifunctional membrane module. The addition of the suspension module 200 to the multifunctional membrane module, which is detachably installed on the filtration module 100, facilitates adjustments to the usage of the membrane module system. The multifunctional membrane module also has a product water pipe 121 and a connector 122 on both sides, which can realize the relative fixation of multiple multifunctional membrane modules, and at the same time collect and transport the filtered water to the external pipeline. The multifunctional membrane module can switch between submerged and floating use by disassembling and assembling the suspension component 200, which simplifies the structure.

[0037] In some embodiments, the top of the water collection frame 110 is provided with an anti-detachment track 111 extending in the width direction, and the suspension component 200 has a groove 202 that mates with the anti-detachment track 111. The suspension component 200 is slidably mounted on the water collection frame 110 to facilitate the separation or installation of the suspension component 200 and the filter component 100. It is understood that in other embodiments, the suspension component 200 and the water collection frame 110 can also be detachably connected by threaded connectors or snap-fit ​​structures.

[0038] It is understandable that the buoyancy of the suspension component 200 can be adjusted by changing the volume of the hollow structure inside the suspension component 200. In this embodiment, the suspension component 200 can keep the filter component 100 in a vertical position in the water. Specifically, when the multifunctional membrane component is in a balanced state, the height of the suspension component 200 above the water surface accounts for 1 / 5 to 2 / 3 of its own height.

[0039] In some embodiments, the filter assembly 100 further includes a first positioning structure 131 and a second positioning structure 132, which are mounted opposite to each other on both sides of the water collection frame 110. The first positioning structure 131 can be detachably connected to the second positioning structure 132 of another multifunctional membrane assembly. It is understood that the first positioning structure 131 and the second positioning structure 132 are provided to assist in the connection between two adjacent multifunctional membrane assemblies, ensuring a relatively fixed effect between the multifunctional membrane assemblies. In this embodiment, the first positioning structure 131 and the second positioning structure 132 are arranged opposite to each other along the thickness direction.

[0040] Furthermore, the first positioning structure 131 and the second positioning structure 132 are plugged together. Referring to the accompanying drawings, the first positioning structure 131 protrudes from the water collection frame 110 and has a first positioning groove. The second positioning structure 132 is configured as a first positioning block protruding from the water collection frame 110. The first positioning block is inserted into the first positioning groove and fixed by a pin, preventing movement between adjacent multifunctional membrane modules along the radial direction of the pin, thus ensuring normal communication between the product water pipe 121 and the connector 122. It is understood that in other embodiments, the pin can be replaced by fasteners such as screws or clips.

[0041] In some embodiments, the filter assembly 100 further includes a first dovetail tenon 142, and the water collection frame 110 has a first dovetail groove 141. The first dovetail tenon 142 and the first dovetail groove 141 are installed opposite to each other on both sides of the water collection frame 110 along the thickness direction. The first dovetail tenon 142 can be inserted and connected to the first dovetail groove 141 of another multifunctional membrane assembly. Referring to the accompanying drawings, it can be understood that the cooperation between the first dovetail groove 141 and the first dovetail tenon 142 can prevent movement between two adjacent multifunctional membrane assemblies along the height direction, further improving the connection stability between the two multifunctional membrane assemblies.

[0042] Furthermore, in some embodiments, the permeate pipe 121, the first positioning structure 131, and the first dovetail tenon 141 are arranged at intervals along the height direction on the same side of the water collection frame 110. It is understood that the intervalted distribution of the permeate pipe 121, the first positioning structure 131, and the first dovetail tenon 141 enhances the stability of the connection between adjacent multifunctional membrane modules. Specifically, the permeate pipe 121 and the receiving connector 122, the first positioning block and the first positioning groove, and the first dovetail tenon 141 and the first dovetail tenon 142 are all arranged on the front and rear sides of the water collection frame 110 to achieve relative fixation of the two multifunctional membrane modules within the same integrated membrane assembly.

[0043] Referring to the accompanying drawings, in this embodiment, the water production pipe 121 and the receiving joint 122, the first positioning block and the first positioning groove, and the first dovetail tenon 142 and the first dovetail groove 141 are all symmetrically arranged in two sets along the width direction of the water collection frame 110.

[0044] In some embodiments, the filter assembly 100 further includes a second dovetail tenon 152, and the water collection frame 110 has a second dovetail groove 151. Referring to the accompanying drawings, the second dovetail tenon 152 and the second dovetail groove 151 are installed opposite to each other on both sides of the water collection frame 110 along the width direction. The second dovetail tenon 152 can be inserted into the second dovetail groove 151 of another multifunctional membrane assembly. It can be understood that the second dovetail tenon 152 and the second dovetail groove 151 are used to achieve the connection between multifunctional membrane assemblies in a multi-row integrated membrane assembly. In this embodiment, three sets of second dovetail tenons 152 and second dovetail grooves 151 are arranged at intervals along the height direction of the water collection frame 110 to ensure the connection stability of the multifunctional membrane assemblies at different heights.

[0045] Furthermore, the filter assembly 100 also includes a third positioning structure 161 and a fourth positioning structure 162. The third positioning structure 161 and the fourth positioning structure 162 are mounted opposite to each other on both sides of the water collection frame 110 along the width direction. The third positioning structure 161 can be detachably connected to the fourth positioning structure 162 of another multifunctional membrane assembly. Specifically, both the third positioning structure 161 and the fourth positioning structure 162 are configured as ear plates protruding from the water collection frame 110, and two adjacent multifunctional membrane assemblies along the width direction are detachably connected by the two ear plates and bolts. It is understood that in other embodiments, the third positioning structure 161 and the fourth positioning structure 162 can also be configured as a snap-fit ​​connection or a plug-in connection.

[0046] In some embodiments, the lifting structure includes a lifting slot 201 extending outward from the top of the suspension component 200. Multiple lifting slots 201 are provided, symmetrically distributed along the width direction on both sides of the suspension component 200. In this embodiment, two lifting slots 201 are provided. It can be understood that the suspension component 200 is configured with a semi-open lifting slot 201, facilitating the simultaneous lifting of multiple multifunctional membrane modules of the integrated membrane assembly by the lifting rod. In other embodiments, the lifting structure is configured as a lifting ring fixed to the suspension component 200.

[0047] In some embodiments, the purification element is a microfiltration membrane fiber or an ultrafiltration membrane fiber, and each purification element is cast into the water collection frame 110 along the height direction. It is understood that the purification element can intercept impurities in the water, and the filtered water is transported to the outside through a fluid channel under pressure. Specifically, the purification element can be configured as a TIPs, NIPs homogenized membrane, or an inner liner membrane, which will not be elaborated further here.

[0048] Furthermore, the multifunctional membrane module is made of plastic to avoid the problem of corrosion that easily occurs during long-term operation of the membrane module system. Specifically, the suspension module 200 and the water collection frame 110 can be made of PE or PP materials in one piece, depending on the usage requirements.

[0049] Understandably, to facilitate the collection of filtered water, at least one multifunctional membrane module in each integrated membrane module is provided with a total water production interface 170 at its top. The total water production interface 170 is connected to the fluid channel, and a hose is connected to the total water production interface 170 to realize the transportation of filtered water within the integrated membrane module.

[0050] Referring to the accompanying drawings, in this embodiment, the membrane module system is provided with two rows of integrated membrane modules. In the same row of integrated membrane modules, two adjacent multifunctional membrane modules along the thickness direction can be relatively fixedly connected by at least one of the following: the permeate pipe 121 and the receiving connector 122, the first positioning structure 131 and the second positioning structure 132, and the first dovetail tenon 142 and the first dovetail groove 141. In the two rows of integrated membrane modules, two adjacent multifunctional membrane modules along the width direction can be relatively fixedly connected by one or two of the following: the second dovetail tenon 152 and the second dovetail groove 151, and the third positioning structure 161 and the fourth positioning structure 162, so as to enhance the stability of the membrane module system.

[0051] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multifunctional membrane module, characterized in that, include: A filtration assembly includes a water collection frame, a second dovetail tenon, and several purification components installed within the water collection frame. Each purification component is cast into the water collection frame along its height. The water collection frame has a fluid channel inside, and each purification component communicates with the fluid channel. A water production pipe is fixed to the water collection frame and communicates with the fluid channel. The water collection frame also has a receiving joint that communicates with the fluid channel. The water collection frame has a second dovetail tenon. The second dovetail tenon and the second dovetail tenon are installed opposite each other on both sides of the water collection frame along the width direction. The second dovetail tenon can be inserted into the second dovetail tenon of another multifunctional membrane assembly. A suspension component, wherein the suspension component is configured as a hollow structure, the suspension component is provided with a hoisting structure, the suspension component is detachably connected to the water collection frame, wherein the top of the water collection frame is provided with an anti-detachment track extending in the width direction, the suspension component is provided with a sliding groove that cooperates with the anti-detachment track, and the suspension component is slidably installed on the water collection frame. The product water pipe and the socket are arranged opposite to each other along the thickness direction on both sides of the water collection frame, and the product water pipe can be connected to the socket of another multifunctional membrane module.

2. The multifunctional membrane module according to claim 1, characterized in that: The filter assembly further includes a first positioning structure and a second positioning structure, which are installed opposite to each other on both sides of the water collection frame along the thickness direction. The first positioning structure can be detachably connected to the second positioning structure of another multifunctional membrane assembly.

3. The multifunctional membrane module according to claim 2, characterized in that: The filter assembly also includes a first dovetail tenon, and the water collection frame has a first dovetail groove. The first dovetail tenon and the first dovetail groove are installed opposite to each other on both sides of the water collection frame along the thickness direction. The first dovetail tenon can be inserted and connected to the first dovetail groove of another multifunctional membrane assembly.

4. The multifunctional membrane module according to claim 3, characterized in that: The water production pipe, the first positioning structure, and the first dovetail tenon are arranged at intervals along the height direction on the same side of the water collection frame.

5. The multifunctional membrane module according to claim 1, characterized in that: The filter assembly further includes a third positioning structure and a fourth positioning structure, which are installed opposite to each other on both sides of the water collection frame along the width direction. The third positioning structure can be detachably connected to the fourth positioning structure of another multifunctional membrane assembly.

6. The multifunctional membrane module according to claim 1, characterized in that: The hoisting structure includes a hoisting groove extending outward from the top of the suspension component. Multiple hoisting grooves are provided, and the multiple hoisting grooves are symmetrically distributed on both sides of the suspension component along the width direction.

7. The multifunctional membrane module according to any one of claims 1 to 6, characterized in that: The purification element is a microfiltration membrane fiber or an ultrafiltration membrane fiber.

8. A membrane module system, characterized in that, include: At least one integrated membrane module, the integrated membrane module comprising a plurality of multifunctional membrane modules as described in any one of claims 1 to 7, each of the multifunctional membrane modules being arranged at intervals along the thickness direction, and two adjacent multifunctional membrane modules being fixedly connected to the receiving joint via the permeate pipe; When each filtration component is equipped with a suspension component, the membrane system can float in the membrane tank for use; when each suspension component is removed, the membrane system can be fixed at the bottom of the membrane tank for use.

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