KR101752631B1 - Header for Filtration Memebrane and Filtration Memebrane Module Having The Same - Google Patents

Abstract

Disclosed is a header for a filtration membrane capable of preventing a fixed layer for fixing a filtration membrane to a header for a filtration membrane from being separated from the header for the filtration membrane, and a filtration membrane module comprising the same. The filtration membrane module of the present invention includes a header including a case having an opening at an upper portion thereof and a partition for dividing the case internal space into a first space for insertion of the filtration membrane and a second space for fixing the filtration membrane; A fixing layer for forming a collecting space in the first space together with the case; And a filtration membrane that is potted in the fixed bed and is in fluid communication with the collecting space via an open end, wherein the partition is provided with a through-hole, wherein the fixed bed includes at least a portion of the first space, And are present in the through holes of the partition.

Description

TECHNICAL FIELD [0001] The present invention relates to a header for a filtration membrane, and a filtration membrane module including the same. [0002]

The present invention relates to a header for a filtration membrane and a filtration membrane module including the same and more particularly to a header for a filtration membrane capable of preventing a fixed layer for fixing a filtration membrane to a header for a filtration membrane from being separated from the header for the filtration membrane, Module.

On the membrane surface of the filtration membrane used for separating a specific substance from a fluid, micropores are formed, and a specific substance is filtered through the micropores. The separation method using the filtration membrane has an advantage in that the desired quality of water can be stably obtained according to the pore size of the filtration membrane and the reliability of the process is high. In addition, since the separation method using the filtration membrane does not require operation such as heating, it has an advantage that it can be used also in a separation method using a microorganism that can be affected by heat.

The filtration membrane is largely classified into a flat membrane having a flat cross-section and a hollow fiber membrane having a bore therein according to its shape. The hollow fiber membrane is a tubular fiber structure having an inner diameter and an outer diameter, and the surface area of the hollow fiber membrane is much larger than that of a flat membrane because a plurality of hollow fiber membranes are used in the form of bundles. Therefore, the filtration apparatus using a hollow fiber membrane is more advantageous in terms of efficiency of separation than a filtration apparatus using a flat membrane, and thus it is widely used in recent filtration fields.

Generally, a filtration apparatus using a hollow fiber membrane includes a bundle of hollow fiber membranes having a predetermined length, and classified into a pressing type and an immersion type depending on the operation mode.

In the case of the pressurized filtration apparatus, by applying pressure to the fluid to be treated, only the fluid other than the solid component such as impurities or sludge is selectively permeated through the hollow surface of the hollow through the hollow. Although the pressurized filtration system requires separate equipment for fluid circulation, it has an advantage that the amount of permeate water obtained per unit time is relatively larger than that of the submerged filtration system.

On the other hand, in the case of the submerged filtration apparatus, the hollow fiber membrane module is directly immersed in a bath storing the fluid to be treated and negative pressure is applied to the inside of the hollow fiber membrane to remove impurities or solid components such as sludge Allowing only fluid to selectively pass through the hollow fiber membrane surface to the hollow. In the submerged filtration device, the amount of permeable water obtained per unit time is relatively small as compared with the submerged filtration device, but the facility for the fluid circulation is not needed, which is advantageous in that it can reduce the facility cost and the operation cost.

Both the pressurized and submerged filtration apparatuses include a double-ends collecting system for collecting permeate permeated hollow through the hollow fiber membrane through both ends of the hollow fiber membrane, It can be classified as a single-end collecting method in which permeated water is collected only through one end of the hollow fiber membrane.

In both the pressurized and submerged filtration apparatuses, there is a need for a collecting space for collecting the permeated water that has permeated through the hollow fiber membrane into the hollow and a means for spatially separating the raw water to be treated from the collecting space. The means for spatially separating the raw water to be treated and the collecting space is also referred to as a fixed layer because it also functions to fix the hollow fiber membrane bundle within the header. A hollow fiber membrane bundle is potted in this fixed layer.

On the other hand, as the filtration operation proceeds, a fouling phenomenon occurs in which impurities existing in the raw water to be treated adhere to the surface of the filtration membrane to contaminate the filtration membrane. This fouling phenomenon lowers the filtration efficiency of the filtration membrane. Therefore, it is necessary to perform cleaning of the filtration membrane during the filtration operation. Generally, an aeration cleaning is performed in order to clean the filtration membrane during the filtration operation. According to the acid cleaning, bubbles strongly ejected from an air diffuser located at the bottom of the filtration membrane module collide with the filtration membrane, thereby removing impurities adhering to the filtration membrane.

As the filtration membrane is oscillated by such an acid cleansing, the adhesive force between the fixed layer on which the filtration membrane is potted and the header is weakened, and eventually the fixed layer is separated from the header.

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a header for a filter membrane and a filter membrane module including the same, which can prevent problems due to limitations and disadvantages of the related art.

One aspect of the present invention is to provide a header for a filter membrane capable of preventing a fixed layer for fixing a filtration membrane to a header for a filtration membrane from being separated from the header for a filtration membrane.

Another aspect of the present invention is to provide a filtration membrane module in which a fixed layer for fixing a filtration membrane to a header for a filtration membrane is prevented from being separated from the header for the filtration membrane.

Other features and advantages of the invention will be set forth in the description which follows, or may be learned by those skilled in the art from the description.

According to one aspect of the present invention as described above, And a partition for dividing the inner space of the case into a first space for inserting the filtration membrane and a second space for securing the filtration membrane, wherein the partition has a through-hole, and the first and second spaces And through the through-holes of the partition to communicate with each other.

According to another aspect of the present invention, there is provided a method of manufacturing a filter, comprising: a header including a case having an opening at an upper portion thereof and a partition dividing the case internal space into a first space for insertion of the filtration membrane and a second space for securing the filtration membrane; A fixing layer for forming a collecting space in the first space together with the case; And a filtration membrane that is potted in the fixed bed and is in fluid communication with the collecting space via an open end, wherein the partition is provided with a through-hole, wherein the fixed bed includes at least a portion of the first space, The first and second spaces being present in through holes of the partition, respectively.

The foregoing general description of the present invention is intended to be illustrative of or explaining the present invention, but does not limit the scope of the present invention.

According to the present invention, the fixed layer for fixing the filtration membrane to the header of the filtration membrane and the header for the filtration membrane can be prevented from relatively moving in the horizontal direction and the vertical direction, thereby preventing the fixed bed from being separated from the header for the filtration membrane.

Therefore, according to the present invention, not only the durability of the filtration membrane module can be improved, but also the reliability of the filtration membrane module can be improved by preventing a fatal filtration operation error which may be caused by the damage of the filtration membrane module.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a perspective view schematically showing a header for a filter membrane according to an embodiment of the present invention,
2 is a plan view of a header for a filter membrane according to an embodiment of the present invention,
FIG. 3 is a cross-sectional view of a header for a filter membrane according to an embodiment of the present invention, taken along line II 'of FIGS. 1 and 2,
4 is a perspective view schematically showing a filtration membrane module according to an embodiment of the present invention,
FIG. 5 is a cross-sectional view of a filtration membrane module according to an embodiment of the present invention, taken along line II 'of FIG. 4,
6 and 7 are process sectional views illustrating a method of manufacturing a filtration membrane module according to an embodiment of the present invention,
8 is a cross-sectional view of a filtration membrane module according to another embodiment of the present invention,
9 is a cross-sectional view of a filtration membrane module according to another embodiment of the present invention.

Hereinafter, a header for a filtration membrane and a filtration membrane module including the same according to the present invention will be described in detail with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Therefore, the present invention encompasses all changes and modifications that come within the scope of the invention as defined in the appended claims and equivalents thereof.

The present invention is not limited to the hollow fiber membrane but various types of filter membranes including a flat membrane may be used as the header and the filtration membrane of the present invention. Lt; / RTI > module.

1 to 3 are a perspective view, a plan view, and a cross-sectional view, respectively, taken along the line I-I ', schematically showing a header for a filter membrane according to an embodiment of the present invention.

1 to 3, a header 110 for a filtration membrane of the present invention includes a case 111 having an opening at an upper portion thereof, and a first filter 110 for inserting an inner space of the case 111 into a filter membrane (not shown) Into at least one partition (112) into a space (S1) and a second space (S2) for fixing the filtration membrane.

At least one through hole H is formed in the partition 112 and the first and second spaces S1 and S2 are in fluid communication with each other through the through hole H of the partition 112 .

According to an embodiment of the present invention, the case 111 has a bottom portion and side walls, and the second space S2 exists between at least a part of the side wall of the case 111 and the partition 112 . Alternatively, the partitions 112 may have a lower height than a portion of the sidewall forming the second space S2. That is, the height of the partition 112 may be smaller than the height of the side wall of the case 111.

According to an embodiment of the present invention, a plurality of grooves (G) are formed on the inner surface of the case (111). Alternatively, the grooves G may be formed on the inner surface of the case 111 so as to have a gradient shape that becomes larger toward the outer surface of the case 111.

Hereinafter, the filtration membrane module 100 of the present invention including the above-described filtration membrane header 110 will be described in detail.

4 and 5 are a perspective view of a filtration membrane module according to an embodiment of the present invention and a cross-sectional view along line I-I '.

4 and 5, the filtration membrane module 100 of the present invention includes a filtration membrane 130 and a header 110 for a filtration membrane. As described above, the filter membrane header 110 includes a case 111 having an opening at the top and a first space S1 for inserting the filtration membrane and a second space S1 for inserting the filtration membrane, And a partition 112 for dividing the space S2 into a space S2. The second space S2 may exist between at least a part of the side wall of the case 111 and the partition.

The filtration membrane module 100 of the present invention includes a fixed layer 120 that forms a collecting space SS1 in the first space together with the case 111 and a fixed layer 120 that is potted in the fixed layer 120, And a filtration membrane 130 in fluid communication with the collecting space SS1 through the filter media.

A through hole is formed in the partition 112. The fixed layer 120 is formed on at least a part of the first space S1 (that is, the remainder of the first space S1 except for the water collecting space SS1) And the second space S2, and is also present in the through-hole H of the partition 112. In the second space S2,

That is, due to the interaction between the part of the fixed space 120 existing in the first space S1 and the part of the fixed space 120 existing in the second space S2, the fixed layer 120 and the header 110 for the filter membrane, Relative to the horizontal direction of the fixed layer 120 (horizontal direction to the upper surface of the fixed layer 120).

The interaction between the fixed layer 120 and the partition 112 existing in the through hole H of the partition 112 causes the fixed layer 120 and the filter membrane header 110 to move in the vertical direction [ The direction perpendicular to the upper surface of the pinned layer 120) can be prevented.

Therefore, due to the existence of the partitions 112 constituting a part of the header 110 for a filter membrane, it is possible to prevent the presence of the partitioning header 112 in the horizontal direction and the vertical direction Relative movement can be prevented, and as a result, the fixing layer 120 can be prevented from being separated from the filter membrane header 110.

4, a plurality of grooves G may be formed on the inner surface of the case 111, and a plurality of grooves G may be formed on the inner surface of the case 111 to have a gradient shape gradually increasing toward the outer surface of the case 111. In this case, And a part of the fixed layer 120 is inserted into the grooves G. [

The relative movement of the fixed layer 120 and the filter membrane header 110 with respect to the horizontal direction due to the interaction between a part of the fixed layer 120 inserted into the grooves G and the grooves G Can be more strongly inhibited.

The interaction of a part of the fixed layer 120 inserted into the grooves G and the grooves G prevents the relative movement of the fixed layer 120 and the filter membrane header 110 in the vertical direction It does not help much. The grooves G may be formed in the case 111 so as to have a gradient shape increasing toward the bottom of the case 111 in order to help prevent the relative movement of the fixed layer 120 and the filter membrane header 110 with respect to the vertical direction. 111). ≪ / RTI >

5, the immobilization layer 120 may include a first sub-chamber 110 which forms a collecting space SS1 in the first space S1 together with the case 111. In this case, A fixed layer 121 and a second sub-pinned layer 122 on the first sub-pinned layer 121. In this case, the second sub-pinned layer 122 is present in at least a part of the first space S1 and in the second space S2, and also in the through hole H of the partition 112 do.

Considering the fact that the fixed layer 120 must keep the filtration membrane 130, for example, the hollow fiber membranes separated from each other by a predetermined distance, and that the fluid should not pass through. It is preferably formed of a hard material having a high hardness. According to an embodiment of the present invention, the first and second sub-pinned layers 121 and 122 are formed of the same material.

According to an embodiment of the present invention, the height of the partition 112 is less than the height of the sidewall of the case 111, and a portion of the second sub-pinned layer 122 is directly above the partition 112 above.

Hereinafter, a method of manufacturing the filtration membrane module 100 according to an embodiment of the present invention will be described with reference to FIGS. For convenience of explanation, a hollow fiber membrane is described as an example of a filtration membrane.

First, the hollow fiber membranes 130 potted in the first sub-fixation layer 121 are prepared as follows.

After the open ends (formed by cutting) of the hollow fiber membranes 130 are sealed with a thermosetting material, the sealed end portions of the hollow fiber membranes 130 are immersed in the first porting agent in the potting jig. As the first potting agent, a urethane resin, an epoxy resin, or the like can be used, but the present invention is not limited thereto. However, the first potting agent may be a material having a relatively high hardness, for example, a hardness (shore A) of 80 to 120. After the first potting agent is cured in a state in which the hollow fiber membranes 130 are immersed, the potting jig is removed. Next, the hollow fiber membranes 130 potted in the first sub-fixation layer 121 are completed by cutting the hardened first potting agent in a direction perpendicular to the longitudinal direction of the hollow fiber membranes 130. At this time, the hollow fibers 130 are also cut, thereby opening the hollow fibers 130 again.

6, the first sub-pinned layer 121 on which the hollow fiber membranes 130 are potted is placed on a protruding portion protruding a predetermined distance from the inner side surface of the case 111, (Not shown). The first sub-fixing layer 121 divides the first space S1 in the case 111 into a collecting space SS1 and a space SS2 for the hollow fiber membranes 130. [ The hollow fiber membranes 130 are in fluid communication with the collecting space SS1 through open ends.

7, a space SS2 for the hollow fiber membranes 130, a second space S2, and a through hole H of the partition 112 are filled with a second potting agent, And the second sub-pinned layer 122 is formed by curing. The second sub-fixing layer 122 fixes the first sub-fixing layer 121 and the hollow fiber membranes 130 in the case 111.

As the second potting agent, a urethane resin or an epoxy resin having a high hardness, for example, a hardness (shore A) of 80 to 120 can be used as the first potting agent, but the present invention is not limited thereto.

Hereinafter, a filtration membrane module 100 according to another embodiment of the present invention will be described with reference to FIG.

8, the height of the partition 112 is substantially equal to the height of the sidewall of the case 111, so that the second sub-pinned layer 122 may not be present on the partition 112 .

In this case, when it is assumed that the size of the through hole H formed in the partition 112 is the same as that of the case where the height of the partition 112 is smaller than the height of the sidewall of the case 111, The interaction between the second sub-pinned layer 122 and the partition 112 existing in the space SS2 for the first sub-pinned layer 130 and the second sub-pinned layer 122 existing in the second space S2 is maximized, There is an advantage that relative movement of the case 111 with respect to the horizontal direction can be effectively prevented.

Hereinafter, a filtration membrane module 100 according to another embodiment of the present invention will be described with reference to FIG.

9, the second sub-pinned layer 122 has a potting surface that is in direct contact with the raw water to be treated, and the filter module 100 has a potting surface on the second sub- And a protective layer 140 interposed between the potting surface and the filtration film 130 to prevent direct contact between the surface and the filtration membrane 130. The protective layer 140 has a lower hardness than the second sub-pinned layer 122. More specifically, the protective layer 140 may be formed of a soft olefin-based, urethane-based or epoxy-based resin having a hardness (shore A) of 10 to 50.

Since the filtration membrane 130 existing in the raw water flows severely during the filtration operation, the filtration membrane 130 contacting the potting surface of the second sub-fixation layer 122 may be damaged by friction. Since the second sub-pinned layer 122 is formed of a hard material, the risk of such damage becomes greater.

Therefore, the passivation layer 140 is interposed between the potting surface of the second sub-fixing layer 122 and the filtration membrane 130, and the potting surface of the second sub- It is possible to minimize the damage to the membrane due to the flow of the filtration film 130. [

The manufacturing method of the filter membrane module having the protective layer 140 is described in detail in Korean Patent Application No. 10-2010-0119996 of the present applicant. This patent application is incorporated herein by reference.

100: filtration membrane module 110: header for filtration membrane
111: Case 112: Partition
120: fixed layer 121: first sub-fixed layer
122: second sub-pinned layer 130: filtration membrane
140: Protective layer

Claims (10)

A case made of a bottom portion and side walls and having an opening at the top; And
And a partition for dividing the inner space of the case into a first space for inserting the filtration membrane and a second space for securing the filtration membrane,
Wherein the partition is protruded from the bottom surface portion,
A through hole is formed in the partition,
Wherein the first and second spaces communicate with each other through the through-holes of the partition. The method according to claim 1,
Wherein the second space is present between at least a part of the side wall of the case and the partition. 3. The method of claim 2,
Wherein a height of the partition is smaller than a height of the side wall. The method according to claim 1,
Wherein a plurality of grooves are formed on an inner surface of the case,
Wherein the grooves have a gradient shape increasing toward the outer surface of the case. A header including a bottom portion and side walls and having an opening at an upper portion thereof and a partition for dividing the internal space of the case into a first space for insertion of the filtration membrane and a second space for securing the filtration membrane;
A fixing layer for forming a collecting space in the first space together with the case; And
A filtration membrane potted in the fixed bed and in fluid communication with the collecting space via an open end,
Wherein the partition is protruded from the bottom surface portion,
A through hole is formed in the partition,
Wherein the fixed layer is present in at least a part of the first space and in the second space, and is also present in the through-hole of the partition. 6. The method of claim 5,
Wherein the second space is present between at least a part of the side wall of the case and the partition. The method according to claim 6,
The height of the partition is smaller than the height of the side wall,
Wherein a portion of the pinning layer is also present directly above the partition. 6. The method of claim 5,
Wherein a plurality of grooves are formed on an inner surface of the case,
The grooves having a gradient shape increasing toward the outer surface of the case,
And a part of the fixing layer is inserted into the grooves. 6. The method of claim 5,
Wherein,
A first sub-pinned layer forming a collecting space in the first space together with the case; And
And a second sub-pinned layer on the first sub-pinned layer,
Wherein the second sub-pinned layer is present in at least a part of the first space and in the second space, respectively, and also in the through-hole of the partition. 10. The method of claim 9,
Wherein the first and second sub-pinned layers are formed of the same material.

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