Membrane group device convenient for membrane cleaning
By employing membrane unit groups connected by elastic components and pulse aeration technology in the MBR process, the problems of high energy consumption and insufficient membrane fouling control in traditional aeration methods have been solved, achieving the dual effect of membrane fouling control and energy reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-03-27
AI Technical Summary
Existing MBR processes have shortcomings in reducing energy consumption and controlling membrane fouling. Traditional aeration methods have weak shear force, vibration may affect system efficiency and cause unevenness, and mechanical vibration may damage components, making it difficult to effectively improve membrane flux and control membrane fouling.
The membrane unit group is connected by elastic components, allowing it to float within the frame. The up-and-down movement of the membrane unit group is achieved by combining the impact force of pulse aeration. With the help of damped vibration and intermittent aeration, effective membrane fouling control and energy consumption reduction are achieved.
It achieves effective control of membrane fouling and significant reduction in energy consumption, increases membrane flux, avoids the adverse effects of mechanical vibration on the system, and improves the stability and efficiency of the system.
Smart Images
Figure CN121735429A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of water treatment equipment, in particular to a membrane module device facilitating membrane cleaning. BACKGROUND
[0002] Membrane bioreactor (MBR) is a new sewage treatment technology combining ultrafiltration / microfiltration membrane separation process with biological treatment process, which has been widely applied in municipal and industrial sewage treatment and reuse. However, in the process of rapid popularization and large-scale application, high energy consumption and difficult operation and maintenance have gradually become two development bottlenecks of MBR process.
[0003] At present, the following two ways are mainly used to reduce energy consumption at home and abroad: (1) Based on aeration blowing, energy consumption is reduced by optimizing membrane materials, membrane module devices, aeration technology breakthroughs, and gas recycling methods, but there are the following shortcomings: 1) The shear force acting on the membrane surface generated by the bubbles is weak, so the selected membrane flux is usually not large; 2) The membrane flux cannot be unlimitedly increased by increasing the aeration flow, and there will be a limit, so it is difficult to improve the membrane water production; 3) The bubble distribution is difficult to be uniform and effective, and a considerable part of the bubbles is almost wasted without playing a role in controlling membrane pollution. (2) Mechanical vibration is used instead of traditional aeration to control membrane pollution. Studies have found that, compared with bubble blowing, mechanical vibration can greatly improve the shear force and achieve significant membrane pollution control effect. However, there are the following shortcomings: 1) In the long-term operation process, vibration will affect the efficiency of the system and may shorten the life cycle of some components (such as membranes), especially in the case of excessive vibration or continuous vibration for a long time, excessive vibration force will cause the connection points of the membrane and the plastic components to leak, causing mechanical stress and fatigue to the system components, thereby leading to premature failure or reduced performance over time. This is especially true for components sensitive to mechanical stress, such as membranes or other moving parts; 2) Studies have found that small-scale vibration membrane module devices cause uneven mixing in the membrane tank, resulting in worse membrane pollution control effect than traditional aeration; 3) Complete mechanical vibration changes the DO state of MBR, causing a series of other problems. SUMMARY
[0004] The present application aims to solve one of the above technical problems in the prior art. To this end, the present application provides a membrane module device facilitating membrane cleaning.
[0005] According to an embodiment of the present application, a membrane module device facilitating membrane cleaning is provided, comprising a frame;
[0006] a membrane unit group, connected to the frame by an elastic member, so that the membrane unit group is floatingly arranged in the frame; an aeration box fixed to the frame, the aeration box being at the bottom of the membrane unit group.
[0007] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0008] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0009] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0010] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0011] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0012] The membrane module device for facilitating membrane cleaning has at least the following beneficial effects: the elastic member is arranged to make the membrane unit group float on the frame, the pulse aeration of the aeration box is used to make the membrane unit group move upward by the impact force, the elastic member generates a rebound force due to deformation when the membrane unit group moves upward, the membrane unit group moves downward under the action of the rebound force after rising to the highest point, and then moves upward under the action of the rebound force after falling to the lowest point, so that the membrane unit group moves up and down repeatedly to move relative to the water flow, thereby effectively flushing the membrane unit group and controlling membrane pollution, and the elastic member generates damping vibration due to deformation, so that the membrane unit group vibrates continuously for a period of time, and the pulse aeration is performed again when the vibration is not obvious, so that the cycle is repeated to achieve the dual purposes of controlling membrane pollution and saving energy and reducing consumption.
[0013] The membrane group device for facilitating membrane cleaning according to the embodiment of the present application, the first interface part is provided with an interface slot for inserting the second interface part, the fastener comprises a bolt and a nut, one end of the bolt is connected with the nut after penetrating through the first interface part and the second interface part.
[0014] The membrane group device for facilitating membrane cleaning according to the embodiment of the present application, the connecting structure comprises a third interface part and a fourth interface part, the third interface part and the fourth interface part are respectively arranged on the left side and the right side of the water collecting frame, wherein the third interface part on one of the membrane unit elements can be interfaced with the fourth interface part on the other of the membrane unit elements.
[0015] The membrane group device for facilitating membrane cleaning according to the embodiment of the present application, the membrane unit group further comprises a fixing frame, the fixing frame comprises a clamping groove and a limiting part, the clamping groove is used for positioning the membrane unit element, and the limiting part is used for limiting the membrane unit element from being separated from the clamping groove.
[0016] The membrane group device for facilitating membrane cleaning according to the embodiment of the present application, the limiting part comprises a first limiting part and a first connecting part, two first limiting parts are arranged, the two first limiting parts are respectively used for abutting against the third interface part and the fourth interface part, and the two first limiting parts are connected through the first connecting part, so that a limiting frame is formed between the limiting part and the first connecting part.
[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS
[0018] The present application will be further described below in conjunction with the drawings and embodiments; Figure 1 is a structure schematic diagram of the membrane group device for facilitating membrane cleaning according to the embodiment of the present application; Figure 2 is a structure schematic diagram of the membrane unit group in the embodiment of the present application Figure 1 ; Figure 3 is a structure schematic diagram of the membrane unit element in the embodiment of the present application Figure 1 ; Figure 4 is a structure schematic diagram of the membrane unit element in the embodiment of the present application Figure 2 ; Figure 5 is a structure schematic diagram of the membrane unit group in the embodiment of the present application Figure 2 ; Figure 6 is a structure schematic diagram of the fixing frame in the embodiment of the present application; Figure 7is a structural schematic diagram of an aeration box in the embodiment of the present application; Figure 8 is a structural schematic diagram of a frame in the embodiment of the present application; Figure 9 is a structural schematic diagram of an aeration box in the embodiment of the present application, and the aeration amount is 42 Nm 3 / h (6 Nm 3 / h. piece of membrane) in the first test, a vibration amplitude test data graph of the membrane unit group; Figure 10 is a structural schematic diagram of an aeration box in the embodiment of the present application, and the aeration amount is 42 Nm 3 / h (6 Nm 3 / h. piece of membrane) in the second test, a vibration amplitude test data graph of the membrane unit group; Figure 11 is a structural schematic diagram of an aeration box in the embodiment of the present application, and the aeration amount is 34 (about 5 Nm 3 / h. piece of membrane) Nm 3 / h, a vibration amplitude test data graph of the membrane unit group; Figure 12 is a structural schematic diagram of an aeration box in the embodiment of the present application, and the aeration amount is 28 (4 Nm 3 / h. piece of membrane) Nm 3 / h, a vibration amplitude test data graph of the membrane unit group; Figure 13 is a structural schematic diagram of an aeration box in the embodiment of the present application, and the aeration amount is 22-23 Nm 3 / h (about 3 Nm 3 / h. piece of membrane), a vibration amplitude test data graph of the membrane unit group; Figure 14 is a comparison graph of vibration amplitudes of X axes under five working conditions in the embodiment of the present application; Figure 15 is a comparison graph of vibration amplitudes of Y axes under five working conditions in the embodiment of the present application; Figure 16 is a working condition data graph of running data of a membrane unit assembly in the embodiment of the present application.
[0019] The reference signs: frame 100, limiting bar 110, water collecting joint 120, membrane unit group 200, membrane unit element 210, water collecting frame 211, first joint 212, second joint 213, membrane wire 214, third joint part 215, fourth joint part 216, connecting structure 220, first joint part 221, second joint part 222, fixing frame 300, frame body 310, clamping groove 311, second connecting piece 320, first limiting piece 330, first connecting piece 340, aeration box 400, first spring 510, second spring 520. DETAILED DESCRIPTION
[0020] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.
[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.
[0022] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0024] Reference Figure 1 The membrane module for easy cleaning of the membrane in this application embodiment includes a frame 100, a membrane unit group 200 and an aeration box 400, wherein the frame 100 is hollow to form a space for accommodating the membrane unit group 200 and the aeration box 400.
[0025] The membrane unit group 200 is connected to the frame 100 through an elastic member so that the membrane unit group 200 is floating within the frame 100. That is, the membrane unit group 200 can float under the action of external force. When the external force disappears, the action of the elastic member will cause the membrane unit group 200 to automatically reset. The aeration box 400 is used to generate pulse aeration to flush the membrane unit group 200.
[0026] Specifically, the elastic component allows the membrane unit group 200 to float on the frame 100. The impact force of the pulse aeration from the aeration box 400 causes the membrane unit group to move upward. As the membrane unit group moves upward, the elastic component gradually generates a rebound force due to deformation. When the membrane unit group rises to its highest point, it moves downward under the action of the rebound force. During the downward movement, when the membrane unit group 200 falls to its lowest point, it moves upward again under the action of the rebound force. This repeated up-and-down movement causes the membrane unit group 200 to move relative to the water flow, which can effectively flush the membrane unit group 200 and control membrane fouling. In addition, the damped vibration generated by the deformation of the elastic component can continuously vibrate the membrane unit group 200 at intervals. When the vibration is not obvious, pulse aeration is repeated. This cycle is repeated to achieve the dual purpose of controlling membrane fouling and saving energy.
[0027] In some embodiments, the elastic member includes multiple springs, and at least two sides of the upper part of the membrane unit group 200 are connected to the frame 100 by the multiple springs, and at least two sides of the lower part of the membrane unit group 200 are connected to the frame 100 by the multiple springs.
[0028] Specifically, in the embodiments shown in this application, a plurality of first springs 510 are spaced apart on both opposite sides of the upper part of the membrane unit group 200. One end of the first spring 510 is connected to the frame 100, and the other end of the first spring 510 is connected to the membrane unit group 200. A plurality of second springs 520 are spaced apart on both opposite sides of the lower part of the membrane unit group 200. One end of the second spring 520 is connected to the frame 100, and the other end of the second spring 520 is connected to the membrane unit group 200.
[0029] The membrane unit 200 is moved upward by the instantaneous impact force of pulse aeration. As the membrane unit 200 moves upward, the second spring 520 gradually generates tension due to deformation, and the first spring 510 gradually generates thrust due to deformation. When the membrane unit 200 rises to the highest point, it moves downward under the action of the spring tension and thrust. During the downward movement, the first spring 510 gradually generates tension, and the second spring 520 gradually generates thrust. When the membrane unit 200 falls to the lowest point, it moves upward again under the action of the spring tension and thrust. This up-and-down movement causes the membrane unit 200 to move relative to the water flow, which can effectively flush the membrane unit 200 and control membrane fouling. In addition, the damping vibration generated by the spring deformation can continuously vibrate the membrane unit 200 at intervals. When the vibration is not obvious, pulse aeration is repeated. This cycle is repeated to achieve the dual purpose of controlling membrane fouling and saving energy and reducing consumption.
[0030] like Figure 2As shown, the membrane unit group 200 includes several membrane unit components 210 connected together, and the membrane unit components 210 are connected to each other by a connecting structure 220. The setting of the connecting structure 220 makes the number of membrane unit components 210 in the membrane unit group 200 controllable, and can be freely assembled into membrane unit groups 200 of different sizes, and also makes the assembly between two membrane unit components 210 simpler and more convenient.
[0031] like Figure 3 and Figure 4 As shown, the membrane unit 210 includes a water collection frame 211 and membrane fibers 214. Several membrane fibers 214 are fixed inside the water collection frame 211, and all membrane fibers 214 are connected to the water flow channels provided on the water collection frame 211.
[0032] The water collection frame 211 is used to fix the membrane fiber 214 on the one hand, and on the other hand, it is also an intermediate component for conveying water. The filtered water obtained after being filtered by the membrane fiber 214 is collected in the water collection frame 211 under pressure. The filtered water in the water collection frame 211 is then conveyed to the main water collection pipe connected to the outside under pressure.
[0033] Membrane fiber 214 is the core component of solid-liquid separation. Numerous micropores of different sizes are distributed on the surface of membrane fiber 214. Microorganisms and macromolecular solutes are retained by the membrane, while water and small molecule solutes smaller than the membrane pore size permeate through the membrane and become filtered water, which is collected in the water collection frame 211 under pressure.
[0034] In some embodiments, such as Figures 3 to 5 As shown, a first connector 212 and a second connector 213 are respectively provided on the front and rear sides of the water collection frame 211. Both the first connector 212 and the second connector 213 are connected to the water flow channel. In two adjacent membrane unit components 210, the first connector 212 on one membrane unit component 210 can be connected to the second connector 213 on the other membrane unit component 210. The water flow channels of the two adjacent water collection frames 211 are connected through the first connector 212 and the second connector 213.
[0035] In a specific embodiment, a first connector 212 or a second connector 213 is provided on the left and right sides of the front or rear side of the water collection frame 211.
[0036] In some specific embodiments, the connection structure 220 includes a first docking part 221, a second docking part 222, and a fastener. The first docking part 221 and the second docking part 222 are respectively disposed on the front and rear sides of the water collection frame 211. In two adjacent membrane unit components 210, the first docking part 221 on one membrane unit component 210 can dock with the second docking part 222 on the other membrane unit component 210. The fastener is used to lock the docking first docking part 221 and the docking part 222 together, thereby completing the connection and combination of the two membrane unit components 210.
[0037] In some specific embodiments, multiple sets of connection structures 220 are provided, and the multiple sets of connection structures 220 are spaced apart along the length direction of the membrane unit 210, making the connection between the two membrane unit 210 more stable.
[0038] In this embodiment of the application, the first docking part 221 is provided with a docking groove for the second docking part 222 to be inserted. The fastener includes a bolt and a nut. One end of the bolt passes through the first docking part 221 and the second docking part 222 and is connected to the nut. Both the first docking part 221 and the second docking part 222 are provided with through holes for the bolt to pass through.
[0039] In some other embodiments, the fastener may also be a pin, which is prevented from leaving the through hole by a snap ring after passing through the through hole.
[0040] In some examples, such as Figure 3 and Figure 4 As shown, the connection structure 220 includes a third docking portion 215 and a fourth docking portion 216, which are respectively disposed on the left and right sides of the water collection frame 211. The third docking portion 215 on one membrane unit 210 can dock with the fourth docking portion 216 on another membrane unit 210. The arrangement of the third docking portion 215 and the fourth docking portion 216 enables docking between two membrane unit groups 200.
[0041] like Figure 2 As shown, the membrane unit assembly 200 also includes a fixing frame 300, wherein, as Figure 6 As shown, the fixing frame 300 includes a slot 311 and a limiting part. The slot 311 is used to position the membrane unit 210, and the limiting part is used to prevent the membrane unit 210 from disengaging from the slot 311. The slot and the limiting part on the fixing frame 300 are used to position and limit the lower part of the membrane unit 210 so as to facilitate the rapid assembly and docking of the membrane unit 210.
[0042] In some embodiments, such as Figure 6 As shown, the limiting part includes a first limiting member 330 and a first connecting member 340. Two first limiting members 330 are provided. The two first limiting members 330 are respectively used to abut against the third docking part 215 and the fourth docking part 216. The two first limiting members 330 are connected by the first connecting member 340 so that a limiting frame is formed between the limiting member and the first connecting member 340. At the same time, the integrity of the membrane unit group 200 is further enhanced.
[0043] Specifically, the fixing frame 300 also includes a frame body 310, a slot 311 is provided on the frame body 310, and a first limiting member 330 is L-shaped. The first limiting member 330 is connected to the frame body 310 through multiple second connecting members 320. The two first limiting members 330 are symmetrically arranged, and the two first limiting members 330 are connected by two first connecting members 340 to form a limiting frame that can prevent the lower end of the membrane unit group 200 from detaching from the fixing frame 300, which is also convenient for disassembly and assembly.
[0044] like Figure 7 The aeration box 400 shown is used to aerate the membrane unit group 200 and also provides the power source for the reciprocating motion of the spring component.
[0045] like Figure 8 The frame 100 shown has a main water collection pipe and a water collection connector 120 on its top. Water from the water collection frame 211 is transported to the main water collection pipe through a hose and then transported to the outside through the water collection connector 120. The frame 100 also has a limiting bar 110 for supporting the weight of the membrane unit 200. When the membrane unit stops operating or is under maintenance, it is used to support the weight of the membrane unit 200.
[0046] This application also conducted vibration tests under actual usage conditions. Let the horizontal direction of the membrane unit group 200 be the X-axis, and the vertical direction be the Y-axis. The test was conducted when the aeration rate was 42 Nm³. 3 / h (6Nm) 3 When the membrane unit group 200 is in the form of a sheet membrane, the vibration amplitude test data are as follows: Figure 9 and Figure 10 As shown.
[0047] When the aeration rate is 42 Nm 3 / h (6Nm) 3 During the first test (using the membrane unit 200), the vibration amplitudes of the membrane unit 200 showed obvious periodic changes in the X-axis and Y-axis over time. The X-axis vibration range was approximately -5.5 mm to 3.8 mm, and the Y-axis range was approximately -3.0 mm to 2.9 mm. During the second test, the vibration amplitudes of the membrane unit 200 ranged from approximately -4.0 mm to 3.4 mm on the X-axis and from approximately -3.5 mm to 2.9 mm on the Y-axis.
[0048] Among them, when the aeration rate is 34 Nm 3 / h (5Nm) 3 When the membrane unit group 200 is in the form of a sheet membrane, the vibration amplitude test data are as follows: Figure 11 As shown. The vibration amplitude of membrane unit 200: X-axis range approximately -3.2mm to 2.7mm, Y-axis range approximately -2.4mm to 2.2mm.
[0049] Among them, when the aeration rate is 28 Nm 3 / h(4Nm) 3 When the membrane unit group 200 is in the form of a sheet membrane, the vibration amplitude test data are as follows: Figure 12 As shown. The vibration amplitude of membrane unit 200: X-axis range approximately -2.4mm to 2.3mm, Y-axis range approximately -2.0mm to 2.0mm.
[0050] Among them, when the aeration rate is 22-23 Nm 3 / h(3Nm) 3 When the membrane unit group 200 is in the form of a sheet membrane, the vibration amplitude test data are as follows: Figure 13 As shown. Vibration amplitude of membrane unit group 200: Minimum vibration amplitude, X-axis range approximately -1.6mm to 1.2mm, Y-axis range approximately -1.9mm to 2.8mm.
[0051] in, Figure 14 The above aeration rates are the vibration amplitude of the X-axis for the five aeration rate conditions.
[0052] in, Figure 15 It is the vibration amplitude of the Y-axis for the above five aeration conditions.
[0053] according to Figure 14 and Figure 15 It can be seen that the vibration intensity is positively correlated with the aeration volume: the greater the aeration volume, the greater the vibration amplitude; the X-axis vibration is greater than the Y-axis vibration: under all working conditions, the X-axis vibration amplitude is greater than the Y-axis vibration amplitude.
[0054] like Figure 16 The operating data shown is: flux 20 LMH / h; aeration 5 Nm³. 3 / h. Membrane film (intermittent aeration mode, non-continuous aeration mode, aeration in the membrane tank is stopped for a period of time after a certain period of aeration, and then aeration is resumed for a certain period of time, and so on); sludge concentration 2500~4000mg / L. Under these operating conditions, compared with the traditional continuous aeration mode, the membrane system has a more stable water permeability and does not exhibit sludge accumulation, showing a significant effect in controlling membrane fouling. Compared with the traditional continuous aeration mode, it can save up to 70% of aeration energy consumption.
[0055] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application 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 this application.
Claims
1. A membrane module that facilitates membrane cleaning, characterized in that: include frame; A membrane unit assembly, wherein the membrane unit assembly is connected to the frame via an elastic member, so that the membrane unit assembly is floatingly disposed within the frame; An aeration box is fixed to the frame and is located at the bottom of the membrane unit assembly.
2. The membrane module for easy membrane cleaning according to claim 1, characterized in that: The elastic member includes multiple springs. At least two sides of the upper part of the membrane unit group are connected to the frame through the multiple springs, and at least two sides of the lower part of the membrane unit group are connected to the frame through the multiple springs.
3. The membrane module for easy membrane cleaning according to claim 1, characterized in that: The membrane unit group includes several membrane unit components connected together, and the several membrane unit components are connected to each other by a connection structure.
4. The membrane module for easy membrane cleaning according to claim 3, characterized in that: The membrane unit includes a water collection frame and membrane fibers. Several membrane fibers are fixed inside the water collection frame, and all membrane fibers are connected to water channels provided on the water collection frame.
5. The membrane module for easy membrane cleaning according to claim 4, characterized in that: The front and rear sides of the water collection frame are respectively provided with a first connector and a second connector. Both the first connector and the second connector are connected to the water flow channel. In two adjacent membrane unit components, the first connector on one membrane unit component can be connected to the second connector on the other membrane unit component component.
6. The membrane module for easy membrane cleaning according to claim 4, characterized in that: The connection structure includes a first docking part, a second docking part, and a fastener. The first docking part and the second docking part are respectively disposed on the front and rear sides of the water collection frame. In two adjacent membrane unit components, the first docking part on one membrane unit component can dock with the second docking part on the other membrane unit component component. The fastener is used to lock the docked first docking part and the second docking part together.
7. The membrane module for easy membrane cleaning according to claim 6, characterized in that: The first mating part is provided with a mating groove for the second mating part to be inserted. The fastener includes a bolt and a nut. One end of the bolt passes through the first mating part and the second mating part and is connected to the nut.
8. The membrane module for easy membrane cleaning according to claim 4, characterized in that: The connection structure includes a third docking part and a fourth docking part, which are respectively disposed on the left and right sides of the water collection frame. The third docking part on one membrane unit can dock with the fourth docking part on another membrane unit.
9. The membrane module for easy membrane cleaning according to claim 8, characterized in that: The membrane unit assembly also includes a fixing frame, which includes a slot and a limiting part. The slot is used to position the membrane unit, and the limiting part is used to prevent the membrane unit from disengaging from the slot.
10. The membrane module for easy membrane cleaning according to claim 9, characterized in that: The limiting part includes a first limiting member and a first connecting member. Two first limiting members are provided, and the two first limiting members are respectively used to abut against the third docking part and the fourth docking part. The two first limiting members are connected by the first connecting member so that a limiting frame is formed between the limiting member and the first connecting member.