Low-energy-consumption immersed column type membrane module

Abstract

The utility model relates to a low-energy-consumption immersive column type membrane component, which comprises a support rod, a transducer, a plurality of hollow fiber membrane filaments, an upper end cylinder, an end cover and a lower end cylinder, the plurality of hollow fiber membrane filaments are respectively fixed through an upper sealing fixing layer and a lower sealing fixing layer which are poured in the upper end cylinder and the lower end cylinder, and the upper end cylinder is in sealing connection with the end cover; the transducer comprises a transduction unit, an amplitude-change pole and a plurality of transmitting units; the top ends of the supporting rods are fixed through upper sealing fixing layers, and elastic parts are arranged at the bottom ends of the supporting rods. The transducer generates high-frequency sound waves through the ultrasonic generator, the high-frequency sound waves are transmitted to the transmitting unit through the amplitude-change pole, and finally ultrasonic energy is transmitted into the hollow fiber membrane filaments, so that the effects of cleaning the surfaces of the hollow fiber membrane filaments and reducing pollution are achieved. The bottom ends of the supporting rods are connected with the lower sealing fixing layer through the elastic parts, the supporting rods can drive the hollow fiber membrane filaments to shake through tiny up-down vibration, vibration and ultrasonic waves are combined, and the stripping effect of pollutants on the hollow fiber membrane filaments is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment field especially is concerned with a low energy consumption immersed column type membrane module. BACKGROUND

[0002] Now, the complication of water pollution makes the contradiction between actual water quality and water quality demand increasingly prominent, thereby putting forward higher and newer urgent demand for water quality purification treatment and its technical support. The progress of submerged hollow fiber membrane treatment drinking water technology provides an advanced treatment method for solving this demand. Unlike traditional pressure type hollow fiber membrane filtration, the submerged hollow fiber membrane module operates under lower negative pressure state, uses siphon or pump suction mode to perform negative pressure suction filtration from outside to inside, realizes low transmembrane pressure difference, moderate membrane flux and smooth operation of direct current type full volume filtration, which makes the overall energy consumption cost lower than traditional pressure type hollow fiber membrane filtration. However, in the operation process, the existing immersed hollow fiber membrane module has the problems of unreasonable structure design, complex engineering installation, complex aeration device structure and uneven gas distribution, which increases the energy consumption, reduces the anti-pollution performance of the hollow fiber membrane wire and shortens the service life of the membrane biological reaction module.

[0003] To solve the technical defects in the above background technology, the purpose of the technical scheme is to provide an immersed column type membrane module with simple and reasonable structure design, high pollution resistance, low energy consumption and low operation cost. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, the utility model provides a low energy consumption immersed column type membrane module.

[0005] The technical scheme adopted by the utility model to solve its technical problems is: a low energy consumption immersed column type membrane module, comprising a support rod, a transducer, a plurality of hollow fiber membrane wires, an upper end cylinder, an end cover and a lower end cylinder, the plurality of hollow fiber membrane wires are fixed through an upper sealing fixed layer and a lower sealing fixed layer poured in the upper end cylinder and the lower end cylinder respectively, the upper end cylinder is sealingly connected with the end cover, and a water production port is arranged on the end cover.

[0006] The transducer comprises a transducer unit, a variable amplitude rod and a plurality of emitting units, the transducer unit is connected with the variable amplitude rod, the variable amplitude rod is uniformly provided with a plurality of emitting units, the transducer unit is located outside the end cover and is sealingly connected with the end cover, the transducer unit is connected with an ultrasonic wave generator through a cable, and the variable amplitude rod sequentially penetrates through the end cover, the upper end cylinder and the upper sealing fixed layer and extends into a filtering cavity composed of the plurality of hollow fiber membrane wires.

[0007] The top end of the support rod is fixed by an upper sealing fixed layer, the bottom end of the support rod is provided with an elastic part, the elastic part comprises a fixed seat and a connecting rod, one end of the connecting rod is connected with the fixed seat, the other end of the connecting rod is fixedly connected with the support rod, and the fixed seat is fixedly arranged in a lower sealing fixed layer.

[0008] In a preferred embodiment of the utility model, the fixed seat and the connecting rod are integrally formed, the fixed seat is arranged horizontally in the lower sealing fixed layer, and the connecting rod is connected with the support rod longitudinally.

[0009] In a preferred embodiment of the utility model, the top end of the support rod is provided with an opening, the support rod is provided with a hollow cavity from the top end to the bottom end, the inner wall of the support rod is made of a heat-conducting material, and a plurality of through holes are distributed on the support rod; the top end of the support rod is connected with an external heat exchange component after extending out of the upper sealing fixed layer and the end cover.

[0010] In a preferred embodiment of the utility model, the outer wall of the support rod is spirally provided with a raised rib.

[0011] In a preferred embodiment of the utility model, a plurality of hollow fiber membrane filaments are distributed along an S-shaped curve track.

[0012] The utility model discloses a hollow fiber membrane cleaning device, which comprises a support rod, an upper sealing fixed layer, a lower sealing fixed layer, an end cover, a plurality of hollow fiber membrane filaments and an ultrasonic generator. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is Figure 1 The enlarged structural schematic diagram of A in the middle;

[0015] Figure 3 It is Figure 1 The enlarged structural schematic diagram of B in the middle;

[0016] Figure 4 The structural schematic diagram of a plurality of hollow fiber membrane filaments along an S-shaped curve track;

[0017] In the figure: support rod 1; through hole 101; convex rib 102; hollow fiber membrane filament 2; upper end cylinder 3; end cover 4; lower end cylinder 5; upper sealing fixed layer 6; lower sealing fixed layer 7; transducer unit 801; amplitude transformer 802; emitting unit 803; fixed seat 901; connecting rod 902; water outlet 10; ultrasonic generator 11. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in detail below with reference to the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and should not be understood as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0020] As Figures 1 to 4 shown, a low-energy consumption immersed column membrane module, comprising a support rod 1, a transducer, a plurality of hollow fiber membrane filaments 2, an upper end cylinder 3, an end cover 4 and a lower end cylinder 5, the plurality of hollow fiber membrane filaments 2 are fixed by an upper sealing fixed layer 6 and a lower sealing fixed layer 7 poured in the upper end cylinder 3 and the lower end cylinder 5, the upper end cylinder 3 is sealingly connected with the end cover 4; the end cover 4 is provided with a water outlet 10;

[0021] The transducer comprises a transducer unit 801, an amplitude transformer 802 and a plurality of emitting units 803, the transducer unit 801 is connected with the amplitude transformer 802, the amplitude transformer 802 amplifies the sound wave energy of the transducer unit 801 and transmits it to the plurality of emitting units 803; the length of the amplitude transformer 802 is designed to be able to pass through the end cover 4, the upper end cylinder 3, the upper sealing fixed layer 6 and penetrate into the hollow fiber membrane filament 2, to ensure that the ultrasonic energy is uniformly distributed to the inside of the membrane module;

[0022] The amplitude rod 802 is uniformly provided with a plurality of emitting units 803, the plurality of emitting units 803 are uniformly arranged on the amplitude rod 802, and are used for transmitting sound waves to the inner surface of the hollow fiber membrane filament 2; the position distribution of the emitting unit 803 is optimized and designed, so that uniform coverage of ultrasonic waves can be realized, and energy concentration or dead zones can be avoided; the transducing unit 801 is located outside the end cover 4 and is in sealing connection with the end cover 4; the transducing unit 801 is connected with the ultrasonic wave generator 11 through a cable; the amplitude rod 802 sequentially penetrates the end cover 4, the upper end cylinder 3 and the upper sealing fixed layer 6 and extends into the filtering cavity composed of a plurality of hollow fiber membrane filaments 2;

[0023] The top end of the support rod 1 is fixed through the upper sealing fixed layer 6, the bottom end of the support rod 1 is provided with an elastic part, the elastic part comprises a fixed seat 901 and a connecting rod 902, one end of the connecting rod 902 is connected with the fixed seat 901, and the other end of the connecting rod 902 is fixedly connected with the support rod 1; and the fixed seat 901 is fixedly arranged in the lower sealing fixed layer 7.

[0024] The low-energy-consumption immersed column type membrane assembly of the utility model utilizes siphon or pump suction, water passes through the hollow fiber membrane filament from outside to inside, and filtration is completed and the produced water is discharged through the water outlet 10. When the low-energy-consumption immersed column type membrane assembly works, the ultrasonic wave generator 9 is started, the transducing unit 801 generates high-frequency sound waves through the ultrasonic wave generator, the high-frequency sound waves are transmitted to the emitting unit 803 through the amplitude rod 802, and finally the ultrasonic wave energy is transmitted into the hollow fiber membrane filament 2, so that the surface of the hollow fiber membrane filament 2 is cleaned and pollution is reduced. The bottom end of the support rod 1 in the application is connected with the lower sealing fixed layer 7 through the elastic part, the elastic part provides a margin for the up-and-down vibration of the support rod 1, that is, the support rod 1 is a dynamic support rod capable of vibrating up and down, and the support rod 1 can drive the hollow fiber membrane filament 2 to vibrate by slight up-and-down vibration (driven by ultrasonic waves or external power), so that the vibration is combined with the ultrasonic waves, and the peeling effect of the pollutants on the hollow fiber membrane filament 2 is further improved.

[0025] In the present application, the transducer unit 801 generates high-frequency mechanical vibration through the electrical signal provided by the ultrasonic generator 11, the amplitude transformer 802 amplifies the vibration of the transducer unit 801, and the ultrasonic energy is transmitted into the lumen of the hollow fiber membrane filament 2 through the transmitting unit 803; ultrasonic vibration forms micro-bubbles (cavitation effect) on the inner surface of the hollow fiber membrane filament, the generation and explosion of the bubbles produce strong shear force and scouring force, which peels off the pollutants on the surface of the hollow fiber membrane filament, and the propagation of ultrasonic waves can also break the structure of the pollution layer and reduce the formation of biological pollution. By directly applying ultrasonic cleaning in the membrane filament, the high-energy water pump operation of the traditional backwashing is avoided; the ultrasonic high-frequency vibration wave generated by the transducer can penetrate the membrane bundle and uniformly scour the surface of the membrane filament. This physical cleaning method can effectively reduce the pollution on the membrane surface, reduce the formation of the membrane pollution layer, reduce the adhesion of the biofilm, delay the plugging phenomenon of the membrane filament, improve the anti-pollution performance of the column type membrane module, prolong the service life of the column type membrane module, and also prolong the cleaning period and reduce the cleaning frequency, effectively reducing the operation cost and maintenance cost.

[0026] As a preferred embodiment, the fixed seat 901 and the connecting rod 902 in the present application are integrally formed, which ensures the structural strength and stability of the elastic part; the fixed seat 901 is transversely arranged in the lower sealing fixed layer 7, that is, the fixed seat 901 is embedded in the lower sealing fixed layer 7, and the connecting rod 902 is longitudinally connected to the support rod 1; a T-shaped structure is formed between the fixed seat 901 and the connecting rod 902, and the elastic part of the T-shaped structure ensures the firmness of the connection between the support rod and the lower sealing fixed layer 7, and the connecting rod extends out of the lower sealing fixed layer 7, providing a margin for the up-and-down vibration of the support rod 1 under external force.

[0027] As a preferred embodiment, the support rod 1 is provided with an opening at the top end, and a hollow cavity is arranged in the support rod 1 from the top end to the bottom end, the inner wall of the support rod 1 is made of a heat-conducting material, and a plurality of through holes 101 are distributed on the support rod 1; the through hole 101 structure is added to the surface of the support rod 1, which can introduce external airflow or water flow, enhance the water flow disturbance effect around the membrane filament, and the through hole 101 can be used as a gas injection port to generate micro-bubbles to assist the cleaning of the hollow fiber membrane filament; the top end of the support rod 1 extends out of the upper sealing fixed layer and the end cover and is connected to the external heat exchange assembly; the waste heat of the ultrasonic generator or other equipment is introduced into the support rod 1, which heats the water flow around the hollow fiber membrane filament through the support rod 1, improves the operating temperature, and increases the temperature of the cleaning medium during cleaning, thereby improving the peeling efficiency of the pollutants on the surface of the hollow fiber membrane filament.

[0028] As a preferred embodiment, the outer wall of the support rod 1 is spirally provided with a raised rib 102, which forms a local disturbance when water flows through, avoiding the deposition of pollutants around the membrane filaments; and the raised rib 102 also achieves the effect of uniformly distributing the water flow, ensuring that the water flow is more evenly distributed in the hollow fiber membrane filaments, improving the utilization efficiency of the hollow fiber membrane filaments.

[0029] As a preferred embodiment, the plurality of hollow fiber membrane filaments 2 are distributed along an S-shaped curve trajectory, and the S-shaped structure of the plurality of hollow fiber membrane filaments 2 easily induces turbulent flow of water, increases the shear force on the surface of the hollow fiber membrane filaments 2, thereby effectively reducing the deposition of pollutants; and the S-shaped curve arrangement can more compactly arrange the hollow fiber membrane filaments, increasing the number of hollow fiber membrane filaments in a unit volume, so that the column type membrane module has a higher filtration area; during the water flow process, the change in the direction of the water flow reduces the possibility of pollutants (such as sludge, particulate matter, etc.) directly adhering to the membrane surface; avoids the concentrated effect of water flow impact force or vibration on a single direction when the hollow fiber membrane filaments are arranged in a straight line, reducing damage or breakage phenomena of the hollow fiber membrane filaments due to stress concentration during long-term operation; when the water flow flows along the S-shaped trajectory, more time is needed to pass through the membrane filaments, improving the probability of pollutants being trapped.

[0030] In the description of the present specification, the description of the terms "one embodiment", "certain embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] In summary, although the present application has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, therefore the protection scope of the present application is subject to the scope defined by the claims.

Claims

1. A low energy submerged column membrane module, characterized by, The application relates to a hollow fiber membrane module, which comprises a supporting rod (1), a transducer, a plurality of hollow fiber membrane filaments (2), an upper end cylinder (3), an end cover (4) and a lower end cylinder (5), the plurality of hollow fiber membrane filaments (2) are fixed through an upper sealing fixed layer (6) and a lower sealing fixed layer (7) which are cast in the upper end cylinder (3) and the lower end cylinder (5) respectively, the upper end cylinder (3) is sealingly connected with the end cover (4), and a water outlet (10) is arranged on the end cover (4). The transducer comprises a transducing unit (801), a variable amplitude rod (802) and a plurality of emitting units (803), the transducing unit (801) is connected with the variable amplitude rod (802), a plurality of emitting units (803) are uniformly arranged on the variable amplitude rod (802), the transducing unit (801) is located outside the end cover (4) and is sealingly connected with the end cover (4), the transducing unit (801) is connected with an ultrasonic wave generator (11) through a cable, and the variable amplitude rod (802) sequentially penetrates through the end cover (4), the upper end cylinder (3) and the upper sealing fixed layer (6) and extends into a filtering cavity composed of the plurality of hollow fiber membrane filaments (2). The top end of the supporting rod (1) is fixed through the upper sealing fixed layer (6), the bottom end of the supporting rod (1) is provided with an elastic part, the elastic part comprises a fixing seat (901) and a connecting rod (902), one end of the connecting rod (902) is connected with the fixing seat (901), the other end of the connecting rod (902) is fixedly connected with the supporting rod (1), and the fixing seat (901) is fixedly arranged in the lower sealing fixed layer (7).

2. The low energy submerged column membrane module of claim 1, wherein, The fixing seat (901) and the connecting rod (902) are integrally formed, the fixing seat (901) is transversely arranged in the lower sealing fixed layer (7), the connecting rod (902) is longitudinally connected with the supporting rod (1), and a T-shaped structure is formed between the fixing seat (901) and the connecting rod (902).

3. The low energy submerged column membrane module of claim 1, wherein, The top end of the supporting rod (1) is provided with an opening, the supporting rod (1) is provided with a hollow cavity from the top end to the bottom end, the inner wall of the supporting rod (1) is made of a heat-conducting material, a plurality of through holes (101) are distributed on the supporting rod (1), and the top end of the supporting rod (1) is connected with an external heat exchange component after extending out of the upper sealing fixed layer and the end cover.

4. The low energy submerged column membrane module of claim 1, wherein, The outer wall of the supporting rod (1) is spirally provided with a convex rib (102).

5. The low energy submerged column membrane module according to any one of claims 1 to 4, wherein, The plurality of hollow fiber membrane filaments (2) are distributed along an S-shaped curve track.

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