WO2013105795A1 - Hollow fiber membrane module - Google Patents

Description

Hollow fiber membrane module

The present invention relates to a hollow fiber membrane module, and more particularly, to a hollow fiber membrane module that can easily remove contaminants in the upper region of the hollow fiber membrane.

As is well known, membrane technology is a type of separation technology that utilizes material selective permeation properties of polymeric materials.

Existing membranes are of various types, such as spiral wound, tubular, hollow, and plate and frame.

Since the hollow fiber type uses a hollow tube having a diameter of 0.2 to 2 mm and a hollow hollow tube, the ratio of the membrane area per unit volume is relatively higher than that of the other types, resulting in higher productivity.

Hollow fiber membrane is formed into a bundle of hollow fiber modules.

Among the hollow fiber membrane modules, so-called immersion hollow fiber membrane modules are used by directly immersing them in a tank of fluid to be treated.

1 is a view showing a conventional immersion hollow fiber membrane module.

As shown in FIG. 1, the conventional hollow fiber membrane module includes a hollow fiber membrane 10 having a hollow 12 therein, a support 20 coupled to a lower end of the hollow fiber membrane 10, and the hollow fiber membrane The collector 30 is coupled to the upper end of the 10.

A support 40 for connecting the support 20 and the collector 30 is provided between the support 20 and the collector 30.

The support portion 20 is provided with an outlet hole, a nozzle, an air diffuser or an air hole 22 (hereinafter, referred to as an "acid hole 22") through which air flows.

Air flowing out through the acid pores 22 moves to the upper region to shake the hollow fiber membrane 10 so that contaminants on the surface of the hollow fiber membrane 10 are removed from the surface of the separator.

By the way, in such a conventional submerged hollow fiber membrane module, part of the air (bubble) flowing out through the acid pores 22 of the support portion 20 is separated (moved) to the outside of the hollow fiber membrane module (hollow membrane) 10 Will not contribute to the separation of contaminants on the surface. In particular, the upper region of the hollow fiber membrane 10 is more severe due to the difference in operating pressure than the lower region, and the contamination may be further increased because air is released.

Therefore, an object of the present invention is to provide a hollow fiber membrane module capable of suppressing the occurrence of contamination of the upper region of the hollow fiber membrane.

In addition, another object of the present invention is to provide a hollow fiber membrane module that can suppress air from escaping to the outside of the hollow fiber membrane module.

The present invention, to achieve the above object, the hollow fiber membrane; A support part provided at a lower end of the hollow fiber membrane; A collector provided at an upper end of the hollow fiber membrane; An extension tube extending upwardly from the support portion; And an air diffuser unit spaced apart from an upper side of the support to diffuse air into an upper region of the hollow fiber membrane.

Here, the diffuser unit may be configured to include an upper diffuser unit having a plurality of diffuser pores distributed corresponding to the upper region of the hollow fiber membrane.

The upper diffuser unit may include a porous diffuser provided in the upper region of the extension tube.

The porous diffuser may be detachably coupled to the extension tube.

The porous diffuser may be configured with a plurality of acid pores.

The acid pores may be formed to be open toward the lower side.

An end portion of the porous diffuser may be detachably provided.

The porous diffuser may be spaced apart along the circumferential direction or the vertical direction of the extension tube.

It may be configured to further include a circular tube wrapped around the hollow fiber membrane.

The extension pipe may be composed of a plurality.

The acid pores may be formed through the extension tube.

The extension tube may be configured to be concentrically coupled with the collector.

The outer diameter of the extension tube may be configured to be formed to 50% or less of the outer diameter of the collector.

The acid pores may be configured to include first acid pores, second acid pores, and third acid pores spaced up and down.

The first acid pores, the second acid pores and the third acid pores may be configured to have diameters of different sizes.

A partition wall may be provided to partition the interior of the extension pipe into different spaces, and the air supply pipe may be connected to the space partitioned by the partition wall.

In the space partitioned by the partition wall, acid pores of different sizes may be formed.

The acid pores may be formed above the half (H / 2) of the height (H) of the extension pipe.

The collector may be connected to the pump so that the suction force can act.

The diffuser unit may include a lower diffuser unit having an diffuser formed in the support unit.

As described above, according to an embodiment of the present invention, by installing an diffuser in the upper region of the hollow fiber membrane, it is possible to alleviate the contamination phenomenon occurred in the upper region of the immersion hollow fiber membrane module, compared to the prior art. At this time, the increase in operating cost due to the air injection can be offset by reducing the amount of air injection in the existing lower end and the additional air inlet to the upper end.

In addition, the number of diffusers can be properly adjusted according to the pollution and operating conditions of the raw water, thereby effectively removing the contamination of the upper region of the hollow fiber membrane.

In addition, by appropriately adjusting the size and number of the acid pores of the diffuser can implement a variety of acid pattern can effectively remove the contaminants of the hollow fiber membrane.

In addition, the diffuser can be easily detached, thereby facilitating cleaning of the diffuser.

In addition, by allowing the acid pores to be directly formed in the extension pipe, it is possible to suppress the air from leaving the module.

In addition, the extension pipe can form bubbles (air bubbles) of various sizes by having the acid pores having a diameter of a different size to effectively remove contaminants (particles) of various sizes from the surface of the hollow fiber membrane.

In addition, the acid pores of the extension tube is formed on the upper side of the half (H / 2) of the height (H) of the extension tube can effectively remove the contamination of the upper region of the hollow fiber membrane.

In addition, by dividing the inner space of the extension pipe into a plurality and by the air supply pipe is provided in each of the space partitioned by the partition walls can be smoothly formed bubbles of various sizes can be effectively removed contaminants of the hollow fiber membrane.

In addition, by forming an acid pores directly in the extension tube and having a guide tube that protrudes radially from the extension tube to guide the air outflow, the acid pattern can be further diversified to more effectively remove contaminants in the hollow fiber membranes. have.

1 is a view showing a conventional immersion hollow fiber membrane module,

2 is a perspective view of an immersion hollow fiber membrane module according to an embodiment of the present invention,

3 is an enlarged view of the porous diffuser region of FIG. 2;

4 to 9 each show a modification of the hollow fiber membrane module of FIG.

10 is a side view of a hollow fiber membrane module according to another embodiment of the present invention;

11 and 12 are diagrams illustrating a modification of the diffuser of FIG. 10, respectively.

13 and 14 are diagrams illustrating a modification of FIG. 10.

It is to be noted that the technical terms used herein are merely used to describe particular embodiments, and are not intended to limit the present invention. In addition, the technical terms used in the present specification should be interpreted as meanings generally understood by those skilled in the art unless they are specifically defined in this specification, and are overly inclusive. It should not be interpreted in the sense of or in the sense of being excessively reduced. In addition, when the technical terms used herein are incorrect technical terms that do not accurately represent the spirit of the present invention, it should be replaced with technical terms that can be understood correctly by those skilled in the art. In addition, the general terms used in the present invention should be interpreted as defined in the dictionary or according to the context before and after, and should not be interpreted in an excessively reduced sense.

Also, the singular forms used herein include the plural forms unless the context clearly indicates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components, or various steps described in the specification, wherein some of the components or some of the steps It should be construed that it may not be included or may further include additional components or steps.

In addition, the suffixes "module" and "unit" for the components used herein are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles from each other.

In addition, terms including ordinal numbers, such as first and second, as used herein may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.

In addition, in describing the present invention, when it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are only for easily understanding the spirit of the present invention and should not be construed as limiting the spirit of the present invention by the accompanying drawings.

2 and 3, the hollow fiber membrane module according to an embodiment of the present invention, the hollow fiber membrane 110; A support part 120 provided at a lower end of the hollow fiber membrane 110; A collector 130 provided at an upper end of the hollow fiber membrane 110; An extension pipe 140 extending upward from the support part 120; And an air diffuser unit 119 spaced apart from the support 120 to diffuse air into the upper region of the hollow fiber membrane 110.

The hollow fiber membrane 110 may be implemented in a bundle of a predetermined number.

The support 120 may be provided at the lower end of the hollow fiber membrane 110.

The collector 130 may be provided at an upper end of the hollow fiber membrane 110.

The diffuser unit 119 may include an upper diffuser unit 149 having a plurality of diffuser pores distributed corresponding to the upper region of the hollow fiber membrane 110.

The upper diffuser unit 149 may be configured to include a porous diffuser 150 provided in the upper region of the extension tube 140.

The porous diffuser 150 may be composed of a plurality.

A plurality of nozzles or acid pores 125 (hereinafter, referred to as "acid pores 125") are installed above the support part 120. In addition, an air inlet 127 for introducing the air may be provided under the support 120.

The hollow fiber membrane 110 is loosely stretched so as to be shaken down and up by air injected from the acid pores 125 to drop contaminants (cake layers) formed on the surface of the membrane.

The collector 130 is coupled to each hollow fiber membrane 110 and collects (withdraws) the permeated water exiting each hollow fiber membrane 110.

On the other hand, the pump 132 is connected to the upper end of the collector 130 may be forced to suction or pressurized permeate. That is, the permeated water that has passed through the hollow fiber membrane 110 may be discharged by suction of the pump 132 connected to the collector 1300.

The extension tube 140 may be installed on the support part 120 in a direction parallel to the hollow fiber membrane 110. The extension tube 140 is connected to the air inlet 127 connected to the lower portion of the support 120. The air inlet 127 may include a compressor (not shown) or a blowing fan (not shown) for supplying air.

On the other hand, the porous air diffuser (air diffuser) 150 is fastened in a direction perpendicular to the extension pipe 140 in the upper side position of the hollow fiber membrane (110). The extension tube 140 and the porous diffuser 150 may be screwed. To this end, the extension tube 140 may be formed with a hole having a screw thread, and a thread line may be formed on an outer circumferential surface of one end of the porous diffuser 140.

The plurality of pores 151 may be formed in the porous diffuser 150. The plurality of pores 151 may be formed in various sizes so that air of various sizes may be injected, thereby removing particulate matter of various sizes attached to the hollow fiber membrane 110.

The plurality of pores 151 may be formed to open in the lower side direction of the hollow fiber membrane (110). As such, the porous diffuser 150 installed at the upper side of the hollow fiber membrane 110 injects air in a downward direction to remove contaminants at the upper side, and is installed at the support 120 at the lower side. The contaminants on the lower side may be removed through the acid pores 125. As such, when the air is injected from the upper and lower portions at the same time, the operating cost may be increased compared to the prior art, but instead by reducing the amount of air injected through the acid pores 125 installed in the support 120, an increase in operating cost is increased. It can also be offset.

One end of the porous diffuser 150 may be screwed with the extension tube 140.

One end of the porous diffuser 150 may be provided with a male screw portion 153.

Correspondingly, the female thread part 154 may be provided in the extension pipe 140 so that the male thread part 153 may be screwed together.

The other end of the porous diffuser 150 may be provided with a cover 152.

The cover 152 may be detachably coupled to the porous diffuser 150. As a result, the cover 152 may be removed to facilitate the washing of the porous diffuser 150.

The other end of the porous diffuser 150 may be provided with a male screw portion 153.

The cover 152 may be screwed with the male screw portion 153. The cover 152 may be provided with a female screw part although not clearly illustrated in the drawing.

Here, the length of the porous diffuser 150 may be configured in various ways. For example, when the length of the porous diffuser 150 is formed to be relatively short, the acid pores 151 may not be formed in the pipe, but may allow air to flow out through the end, or may be formed in the cover 152. have. When the acid pores are formed in the cover 152, the number and size thereof may be appropriately adjusted. By such a configuration, more diverging patterns are formed to shake the hollow fiber membrane 110 in various ways to effectively remove contaminants in the hollow fiber membrane 110.

On the other hand, such a porous diffuser 150 may be installed in the extension pipe 140 at the same distance from the support 120, a plurality of 45 degrees, 60 degrees, 90 degrees, or 120 degrees to each other. For example, in FIG. 2, four porous diffusers 150 are formed at a predetermined distance from the support 120 at a distance of 90 degrees. At this time, the upper four porous diffuser and the lower four porous diffuser may be installed to be offset from each other at a predetermined angle.

On the other hand, the hollow fiber membrane 110 may be protected by a cylindrical tube 160 installed to surround the outer circumference. The cylindrical tube may be fastened to the support part 120 and the collector 130. In this case, the porous diffuser 150 is formed to be smaller than the radius of the cylindrical tube 160 by a predetermined size or more, it can be easily installed in the cylindrical tube (160).

As described above, according to an embodiment of the present invention, the porous diffuser 150 installed at the upper side of the hollow fiber membrane 110 injects air in the downward direction to remove contaminants on the upper side. At the same time, the lower side may remove contaminants on the lower side through the acid pores 125 installed in the support 120. In addition, the plurality of pores 151 of the porous diffuser 150 is formed in a variety of sizes, injecting air bubbles of various sizes. Thus, contaminants with various sizes can be easily removed. In addition, the porous diffuser 150 is fastened by screwing, and can be easily separated and washed.

On the other hand, as can be seen with reference to Figure 4, the plurality of porous diffuser 150 may be installed spaced apart from each other from the support 120. In this case, the plurality of porous diffuser 150 may be disposed to be offset from each other. For example, the plurality of porous diffusers 150 may be disposed to be offset from each other at an angle of 30 degrees, 45 degrees, 60 degrees, 90 degrees, and the like.

In addition, as can be seen with reference to Figure 5, the extension pipes (141, 142) may be composed of a plurality (for example, a pair).

The extension pipes 141 and 142 may be installed at an outer region of the hollow fiber membrane 110.

The extension pipes 141 and 142 may be connected to the edge regions of the support part 120 and the collector 130.

The extension pipes 141 and 142 may be disposed to face each other.

The upper diffuser unit 149 may include a plurality of porous diffusers 150 provided in each of the extension pipes 141 and 142.

Here, the length of the porous diffuser 150 may be appropriately adjusted.

The length of each porous diffuser 150 may be greater than the radius of the cylindrical tube 160. In this case, the installation angle of the porous diffuser 150 may be generated.

The porous diffuser 150 may be configured to be smaller than the radius of the cylindrical tube (160). At this time, the constraint of the installation angle of each porous diffuser 150 may be generated relatively small.

6, the extension pipes 141, 142, 143, and 144 may be configured as four, for example.

Each of the extension pipes 141 to 144 may be installed, for example, at an upper end of the support part 120 to form 90 degrees to each other from the center.

Each of the extension pipes 141 to 144 may be provided with a porous diffuser 150. Thereby, the installation of more porous diffuser 150 is possible. This is to make it possible to more quickly remove contaminants of the hollow fiber membrane 110 when there are many foreign substances in the permeate.

In addition, as shown in FIG. 7, the hollow fiber membrane module of the present embodiment may include an upper diffuser unit 149 and a lower diffuser unit 124 spaced apart in the vertical direction.

The upper diffuser unit 149 may include a plurality of porous diffusers 150 provided in the extension tube 140.

The porous diffuser 150 may be disposed in the shape of a cross (+) spaced at intervals of 90 degrees around the extension tube 140.

The porous diffuser 150 may be formed in a plurality of stages (eg, three stages) spaced apart in the vertical direction.

An annular support 155 may be provided around the porous diffuser 150. As a result, the occurrence of play in each of the porous diffusers 150 can be suppressed and firmly supported. can do.

An end of each porous diffuser 150 may be connected to the support 155 at the same time.

Here, the support 155 may be composed of a circular ring or a polygonal ring.

Meanwhile, as can be seen with reference to FIGS. 8 and 9, the porous diffuser 150 may be formed to be bent. The bent porous diffuser 150 may be installed such that the end faces downward, as shown in FIG. 8, or the end faces upward, as shown in FIG. 9.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 10 to 14.

As shown in Figure 10, the hollow fiber membrane module according to another embodiment of the present invention, the hollow fiber membrane 210; A support unit 220 provided at a lower end of the hollow fiber membrane 210; A collector 230 provided at an upper end of the hollow fiber membrane 210; An extension tube 240 extending upward from the support portion 220; And an air disperser unit 119 spaced apart from the upper side of the support part 220 to diffuse air into the upper region of the hollow fiber membrane 210.

The hollow fiber membrane 210 may be composed of, for example, a plurality of bundles having a predetermined number (preset number) of the hollow fiber membranes 210.

The lower portion of the hollow fiber membrane 210 may be provided with a support 220.

The lower end of the hollow fiber membrane 210, for example, may be configured to be blocked by the potting material of the support portion 220.

The support part 220 may be implemented, for example, in a disk shape.

On the other hand, the diffuser unit 119 may be provided with a lower diffuser unit 124 having an diffuser 222 provided in the support 220.

The lower diffuser unit 124 may be configured to include, for example, an acid hole 222 formed to allow air to flow out of the support part 220.

The air 224, the air bubbles, and the bubbles (hereinafter, referred to as “air 224”) flowing out through the acid pores 222 of the support 220 may be moved upward.

The collector 230 may be provided at an upper end of the hollow fiber membrane 210.

An upper end of the hollow fiber membrane 210 may be coupled to and supported by the collector 230.

The upper end of the hollow fiber membrane 210 may be configured to be open so that water (permeate) introduced into the hollow fiber membrane 210 may flow out. As a result, the permeated water transmitted from the collector 230 to each of the hollow fiber membranes 210 may be collected and collected.

The collector 230, for example, may be implemented in a disk shape having a predetermined diameter (D).

A suction force (negative pressure, negative pressure) may be applied to the upper end of the hollow fiber membrane 210 so as to facilitate the inflow of permeate. Accordingly, contamination may be promoted relative to the upper region near the upper end of the hollow fiber membrane 210 compared to the lower region far from the upper end.

The collector 230 may be connected to the pump 132 so that a suction force may act.

On the other hand, an extension tube 240 may be provided between the support part 220 and the collector 230.

More specifically, one end (lower end) of the extension pipe 240 may be connected to the support part 220, and the other end (upper end) of the extension pipe 240 may be connected to the collector 230.

The extension tube 240 may be formed, for example, shorter than the length of the hollow fiber membrane 210. As a result, each of the hollow fiber membranes 210 may be loosely stretched between the collector 230 and the support part 220 to be movable. According to this configuration, each of the hollow fiber membrane 210 is shaken by the air (air bubbles, bubbles) 224 flowing out of the extension pipe 240 and / or the support portion 220 and moving upwards (224) Contaminants on the surface of the 210 may be separated (removed) from the surface of the hollow fiber membrane 210.

An air passage may be formed in the extension tube 240.

Meanwhile, the diffuser unit 119 may include an upper diffuser unit 149 having a plurality of diffuser pores 242 distributed corresponding to the upper region of the hollow fiber membrane 210.

A plurality of acid pores 242 may be formed in the upper region of the extension tube 240 to allow air to flow out.

The acid pores 242 may be formed above the half (H / 2) of the height (H) of the extension tube 240. As a result, the air is intensively supplied to the upper region of the hollow fiber membrane 210 in which pollution is mainly generated, thereby effectively removing contaminants in the hollow fiber membrane 210.

The acid pores 242 may be formed to have, for example, the same diameter d.

The acid pores 242 may be formed at regular intervals (pitch) p along the circumferential direction.

The acid pores 242 may be formed in a plurality of stages along the vertical direction. In the present exemplary embodiment, the diffuser 242 of the extension tube 240 is exemplified in six stages, but the size, spacing, and number of stages of the diffuser 242 may be appropriately adjusted.

For example, as shown in FIG. 11, the upper three stages 243a are arranged in rows up and down, and the lower three stages 243b are arranged in upper three stages. It may be configured to be disposed between the columns 243a, respectively. As a result, a pattern (air pattern) of air flowing out through the air pores 242 may be varied.

In addition, the acid pores 242, for example, as shown in Figure 12, may be configured so that the odd end 245a and even end 245b of each stage is arranged in a zigzag. As a result, the pattern of the air flowing out through the acid pores 242 (acid pattern) becomes more diverse, and thus, the hollow fiber membrane 210 may be more effectively shaken to more effectively remove contaminants in the hollow fiber membrane 210. .

The extension pipe 240 may be configured to have, for example, a diameter of 50% (D / 2) or less of the diameter (D) of the collector 230. In this case, when the diameter of the collector 230 exceeds 50%, the installation area of the hollow fiber membrane 210 may be relatively small, which may lower the water treatment ability.

One side of the extension tube 240 may be provided with an air supply unit 150 to supply air to the inside of the extension tube 240.

The air supply unit 150 may be connected to a compressor or a blowing fan (not shown) to supply air.

For example, the air supply unit 150 may be connected to the support unit 220. As a result, the air (bubble) 224 may flow out through the acid pores 242 of the extension pipe 240 and the acid pores 222 of the support part 220. Here, of course, the air supply unit 150 may be configured to supply appropriate air to the acid pores 222 of the support unit 220 and the acid pores 242 of the extension pipe 240.

By such a configuration, when air is supplied through the air supply unit 150, air may flow out through the acid pores 222 of the support unit 220 and the acid pores 242 of the extension pipe 240.

Air (air droplets) 224 flowing out through the acid pores 222 of the support unit 220 moves upward to shake the hollow fiber membrane 210 to contaminants on the surface of the hollow fiber membrane 210. (210) to allow separation from the surface.

The air flowing out through the acid pores 242 of the extension pipe 240 is discharged to the upper region of the hollow fiber membrane 210, so that the pollutants in the upper region of the hollow fiber membrane 210 that is relatively severely polluted are easily separated. To be possible.

On the other hand, as shown in Figure 13, the acid pores 242, for example, the first acid pores 251 disposed on the upper side, the second mountain disposed below the first acid pores 251 It may be configured to include a pore 252 and the third acid pores 253 disposed below the second acid pores 252.

The first acid pores 251 may be configured to have a relatively small first diameter d1.

The first acid pores 251 may be spaced apart from the first pitch p1 along the circumferential direction.

The first acid pores 251 may be arranged to form a plurality of stages spaced apart from each other, for example.

The second acid pores 252 may be configured to have a second diameter d2 larger than the first diameter d1 of the first acid pores 251.

The second acid pores 252 may be spaced apart along the circumferential direction with a second pitch p2 larger than the first pitch of the first acid pores 251.

The second acid pores 252 may be configured to include, for example, a plurality of stages spaced vertically.

For example, the third acid pores 253 may be configured to have a third diameter d3 that is larger than the second diameter d2 of the second acid pores 252.

For example, the third acid pores 253 may be spaced apart from each other in a circumferential direction with a third pitch p3 that is larger than the second pitch p2 of the second acid pores 252.

Here, the diameters and pitches of the first acid pores 251, the second acid pores 252, and the third acid pores 253, and the number of upper and lower stages may be appropriately adjusted.

Meanwhile, an air supply unit 150 may be connected to the extension tube 240 to supply air to the extension tube 240.

The air supply unit 150 may be, for example, connected to the support unit 220 and configured to supply air into the extension tube 240.

According to this configuration, when air is supplied through the air supply unit 150, some of the air is discharged through the acid pores 222 of the support unit 220 is moved upward. As a result, while the hollow fiber membrane 210 is shaken, contaminants on the surface of the hollow fiber membrane 210 may be separated.

Meanwhile, another part of the supplied air may move upward along the extension tube 240 to flow out through the first acid pores 251 to third acid pores 253. In this case, the air flowing out through the relatively small first acid pores 251 may be moved upward at a distance close to the extension tube 240. As a result, the hollow fiber membrane 210 relatively close to the extension tube 240 is shaken to remove contaminants on the surface of the hollow fiber membrane 210.

In addition, the air flowing out through the second acid pores 252, which are relatively larger than the first acid pores 251, may be further moved upward from the extension pipe 240 (for example, an intermediate point). . As a result, the intermediate hollow fiber membrane 210 (for example, the hollow fiber membranes 210 disposed about halfway between the rim of the collector 230 and the outer diameter of the extension tube 240) is relatively shaken to the intermediate fiber. Shake the hollow fiber membrane 210 to remove the contaminants of the hollow fiber membrane (210).

In addition, the air (bubble) flowed out through the largest third acid pores 253 is relatively far away from the extension pipe 240 (closer to the edge of the collector 230) is moved up and disposed relatively far away The hollow fiber membrane 210 (for example, the hollow fiber membrane 210 disposed in the outer region) is shaken to remove contaminants on the surface of the hollow fiber membrane 210.

By this configuration, when air is supplied to the inside of the extension pipe 240 through the air supply unit 150, the air moved to the upper portion of the extension pipe 240 is the first acid pores 251 to third acid pores Each flows through 253.

As described above, the hollow fiber membrane module 210 of the present embodiment has different distances from the extension pipe 240 through the first acid pores 251 to the third acid pores 253 having different diameters. As it flows upward, each hollow fiber membrane 210 spaced at different intervals from the extension tube 240 may be appropriately shaken to effectively separate and remove contaminants on the surface of each hollow fiber membrane 210.

On the other hand, as shown in Figure 14, the inside of the extension pipe 240 may be provided with a partition wall 160 for partitioning the space.

A plurality of partition walls 160 may be formed.

In the extension pipe 240, for example, a first partition 261, a second partition 262, and a third partition 263 may be provided.

More specifically, for example, the first partition 160 may be formed in the inner upper region of the extension pipe 240, and the second partition 262 may be spaced apart from the lower side of the first partition 261.

The third partition 263 may be spaced apart from the lower side of the second partition 262. As a result, the first space 271, the second space 272, and the third space 273 may be formed in the extension tube 240, respectively.

For example, the first acid pores 251 may be formed through the outer wall of the first space 271 partitioned by the first partition 261.

On the outer wall of the second space 272, for example, a second acid pores 252 having a larger diameter (d2) than the first acid pores 251 may be formed through.

For example, a third acid pore 253 having a larger diameter d3 than the second acid pore 252 may be formed in the outer wall of the third space 273.

The air supply unit 150 may include an air supply pipe 280 for supplying air into the extension pipe 240.

The air supply pipe 280 is, for example, a first supply pipe 281 for supplying air to the first space 271, the second space 272 is disposed inside the second space 272 A second supply pipe 282 for supplying air to the air and a third supply pipe 283 disposed in the third space 273 to supply air to the third space 273 may be provided.

In this configuration, when air is supplied to the first space 271 to the third space 273 through the first supply pipe 281 to the third supply pipe 283, the first acid pores formed in the corresponding space ( 251) through the third acid pores 253, the air flows out respectively.

Air flowing out through the first acid pores 251 to the third acid pores 253 moves upwards, respectively, and shakes surrounding hollow fiber membranes 210 to remove contaminants on the surface of each hollow fiber membrane 210. Be sure to

In the hollow fiber membrane module of the present embodiment, as described above, air bubbles (bubbles) having different sizes are moved upwards through the first acid pores 251 to the third acid pores 253 having different diameters, respectively. By shaking each of the hollow fiber membranes 210 disposed in the region, contaminants of the hollow fiber membranes 210 may be effectively removed.

In addition, air can be supplied to the first space 271 to the third space 273 in an appropriate amount (or pressure), so that the degree of air outflow (outflow amount and / or outflow) according to the pollution degree of the hollow fiber membrane 210 Pressure) can be effectively removed contaminants of each of the hollow fiber membrane (210).

In the above-described embodiment with reference to FIGS. 10 to 14, the case in which all the acid pores are provided in the support part is illustrated, but the acid pores are formed only in the diffuser without forming the acid pores in the support part. Of course you can.

In addition, in the above-described embodiment with reference to FIGS. 10 to 14, the upper diffuser unit has only an example of the case having acid pores formed in the extension pipe, but the porous diffuser described above with reference to FIGS. 2 to 9. It may be configured to have at least one. Further, on the contrary, the extension pipe of the embodiment described above with reference to FIGS. 2 to 9 may be provided with at least one of the outlet holes as described above with reference to FIGS. 10 to 14.

In addition, the embodiment described above with reference to FIGS. 13 and 14 exemplifies a case in which three acid pores are formed in diameter, but the diameter of the acid pores may be formed in two, or four or more. It may be configured to have different diameters.

Claims (20)

Hollow fiber membranes; A support part provided at a lower end of the hollow fiber membrane; A collector provided at an upper end of the hollow fiber membrane; An extension tube extending upwardly from the support portion; And An air diffuser unit formed on an upper side of the support part to diffuse air into an upper region of the hollow fiber membrane; Hollow fiber membrane module comprising a. The method of claim 1, And the diffuser unit comprises: an upper diffuser unit having a plurality of diffuser pores distributed corresponding to an upper region of the hollow fiber membrane. The method of claim 2, The upper diffuser unit is a hollow fiber membrane module, characterized in that it comprises a porous diffuser provided in the upper region of the extension tube. The method of claim 3, The porous fiber diffuser is hollow fiber membrane module, characterized in that detachably coupled to the extension tube. The method of claim 3, The porous diffuser is hollow fiber membrane module, characterized in that it comprises a plurality of acid pores. The method of claim 5, The acid pores are hollow fiber membrane module, characterized in that formed to open toward the lower side. The method of claim 3, Hollow fiber membrane module, characterized in that the cover is detachably provided at the end of the porous diffuser. The method of claim 3, The porous diffuser is hollow fiber membrane module, characterized in that spaced apart in the circumferential direction or vertical direction of the extension tube. The method of claim 1, The hollow fiber membrane module further comprises a circular tube surrounding the hollow fiber membrane. The method of claim 1, The hollow fiber membrane module, characterized in that the plurality of extension pipes. The method of claim 2, The acid pores are hollow fiber membrane module, characterized in that formed through the extension tube. The method of claim 11, The extension tube is hollow fiber membrane module, characterized in that coupled to the collector concentrically. The method of claim 11, The outer diameter of the extension tube is a hollow fiber membrane module, characterized in that formed in less than 50% of the outer diameter of the collector. The method of claim 11, The acid pores are hollow fiber membrane module, characterized in that it comprises a first acid pore, a second acid pore and a third acid pore spaced up and down. The method of claim 14, The first acid pores, the second acid pores and the third acid pores are hollow fiber membrane module, characterized in that having a diameter of different sizes. The method of claim 11, And a partition wall partitioning the interior of the extension pipe into different spaces, and the air supply pipes are connected to the spaces partitioned by the partition walls, respectively. The method of claim 16, The hollow fiber membrane module, characterized in that acid pores of different sizes are formed in the space partitioned by the partition wall. The method of claim 11, The acid pores are hollow fiber membrane module, characterized in that formed on the upper side of the half (H / 2) of the height (H) of the extension pipe. The method according to any one of claims 1 to 18, The hollow fiber membrane module, characterized in that the pump is connected to the collector so that the suction force can act. The method of claim 19, And the air diffuser unit comprises a lower air diffuser unit having acid pores formed in the support part.

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