KR20030094959A - Module using hollow fiber-membrane - Google Patents

Abstract

PURPOSE: Provided is a hollow fiber membrane module allowing to be easily combined with another module to treat large amount of water. CONSTITUTION: The module comprises a lower casing(1) having a space therein, a lower cap(5) receiving the lower casing(1) therein to define a space between the lower casing(1) and itself, the lower cap(5) having at least one hole to be connected to a suction pump for discharging purified water, an upper casing(3) having a space therein and being installed above the lower casing(1) and spaced from the lower casing(1), an upper cap(7) with at least one hole(7a) for receiving the upper casing(3) therein to define a space between the upper casing(3) and itself, a plurality of hollow fibers(9) extending between the lower casing and the upper casing(3) and being coupled to the lower casing and the upper casing(3) at both ends thereof, air supply pipes(11) installed across inner space of the upper casing(3) and the lower casing(10) while penetrating the opposite sides of the upper casing(3) and the lower casing(1), respectively, the air supply pipes(11) being connected to an air supply unit, a supporting pipe(13) extending between the upper casing(3) and the lower casing(1), thereby supporting the upper casing(3) and the lower casing(1), and being connected to an air supply pipes(11) for distributing air through air distributing holes formed on the surface thereof.

Description

Hollow fiber membrane module {Module using hollow fiber-membrane}

The present invention relates to a hollow fiber membrane module, and more particularly, to a hollow fiber membrane module that can be used for filtration of wastewater and the like, and can cope with various wastewater filtration treatment capacities by connecting a plurality of hollow fiber membrane modules composed of units. will be.

In general, the hollow fiber membrane module has a filtration function to filter out suspended solids, particles, and bacteria contained in water, and is used to separate proteins and bacteria from water treatment such as purified water treatment and wastewater treatment, and the like. It is disclosed in Japanese Unexamined Publication No. 1998-070975. The hollow fiber membrane module disclosed in the above publication has a structure in which hollow fiber membrane fixing parts are disposed on upper and lower portions thereof and are connected to each other by an air pipe. In particular, the publication includes an air pipe extending above the hollow fiber membrane fixing portion to blow air, and the air pipe is provided with a bubbling portion formed of an air nozzle. Such a conventional structure has an effect of effectively washing the hollow fiber membranes to prevent the hollow fiber membranes from clogging, but it is not efficient in the structure of connecting the plurality of hollow fiber membrane modules to each other to increase the processing capacity. There is this. In particular, the hollow fiber membrane module described in the above-mentioned publication is weak in a structure in which several parts are connected in parallel according to the wastewater treatment capacity due to interference caused by the portion where the air pipe into which the air is introduced and the suction line that sucks the purified water occurs. Have

Accordingly, the present invention has been proposed to solve the above problems, and an object of the present invention is to provide a hollow fiber membrane module that can cope with wastewater treatment plants of various capacities by connecting two or more to facilitate the assembly according to the capacity. .

Still another object of the present invention is to provide a hollow fiber membrane module that reduces the production cost by manufacturing a hollow fiber membrane module unit of the same type can be bonded to each other.

The present invention to achieve the above object, at least one lower case is provided with a space therein; A lower cap coupled to the lower case to form a predetermined space and provided with a purified water outlet hole at one side thereof to be connected to the suction pump; At least one upper case disposed at a predetermined distance from the lower case and provided with a predetermined space therein; An upper cap coupled to the upper case to form a predetermined space and provided with another purified water outlet hole at one side thereof to be connected to the suction pump; A plurality of hollow fibers respectively coupled to the lower case and the upper case such that the purified water absorbed from the side is moved to the lower case and the lower cap and the respective spaces formed by the upper case and the upper cap; An air supply pipe installed in the lower case and the upper case, disposed through one side, and connected to an air supply device to allow air to flow therein; A hollow fiber membrane module connected to the air supply pipe so as to be introduced therein, and including a support pipe supporting the lower case and the upper case and provided with a plurality of air discharge holes for discharging the introduced air. To provide.

In the hollow fiber membrane module of the present invention configured as described above, the air supply device is connected to the air inlet so that air can be introduced through the air inlet provided in the lower or upper case, and the purified water drawn out provided in the lower or upper cap. Connect the suction pump to the purified water outlet so that the purified water can be taken out through the hole. Then, when the feed device is driven in the upper suction pump and the purified water flows into the space provided between the lower case and the lower cap, the upper case and the upper cap through the hollow fiber side, and is discharged through the purified water outlet hole. In addition, the air supplied from the air supply device is discharged through the air inlet hole through the air supply pipe to the air outlet hole of the support pipe. At this time, the air discharged through the air discharge hole may be washed without contaminants in the hollow fiber. In particular, it is possible to combine two or more hollow fiber membrane modules by connecting the air supply pipe and the adjacent air supply pipe with a connecting means.

1 is a perspective view showing a hollow fiber membrane module constituting one unit to explain an embodiment according to the present invention.

2 is a plan view of the main part of FIG.

3 is a partial cross-sectional view of the hollow fiber membrane module forming a single unit in the longitudinal direction to explain the operation according to the present invention.

Figure 4 is a cross-sectional view showing an embodiment of combining a plurality of hollow fiber membrane module unit according to the present invention.

5 is a perspective view of a main part applied to FIG. 4.

6 is a view showing another embodiment of combining a plurality of hollow fiber membrane module unit according to the present invention.

FIG. 7 is a diagram illustrating main parts of FIG. 6.

8 is a view showing another embodiment of the coupling structure of the upper case and the cap for constituting the hollow fiber membrane module according to the present invention.

9 is a view showing another embodiment of combining a plurality of hollow fiber membrane module unit according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a hollow fiber membrane module for explaining an embodiment according to the present invention, Figure 2 is a plan view of Figure 1, the lower and upper cases (1, 3), the lower and upper case (1, The lower and upper caps 5 and 7, the hollow fiber 9, and the air supply pipe 11 and the support pipe 13, which are coupled to the space 3, are shown.

The lower and upper cases 1 and 3 are provided with a space therein, and a plurality of hollow fibers 9 are coupled to the space so as to be disposed in the up and down directions by an adhesive or the like. And the lower and upper cases (1, 3) is coupled to the air supply pipe 11 (lower case side is omitted in the illustration) so as to pass through both sides. That is, the lower and upper cases 1 and 3 are provided with air inlet holes 1a and 3a, and the air supply pipes 11 are respectively coupled to be located at the inner circumference of the air inlet holes 1a and 3a. Can be.

The support pipe 13 disposed in the up and down directions is coupled to the air supply pipe 11 coupled to the lower and upper cases 1 and 3. The support pipe 13 is provided with a plurality of air discharge holes 13a for discharging air.

Lower and upper caps 1 and 3 are coupled to the lower and upper caps 5 and 7, and are preferably coupled to the lower and upper caps 5 and 7 to form a predetermined space. The lower and upper caps 5 and 7 may be coupled to the lower and upper cases 1 and 3 by bonding or interference fitting.

The lower and upper caps 5 and 7 are provided with purified water extraction holes 5a and 7a on one side or on the upper side. The purified water extraction holes 5a and 7a are connected to a space provided therein so that the purified water drawn out through the hollow fiber 9 can be discharged to the outside. As shown in FIG. 3, the purified water withdrawal holes 5a and 7a may be connected to a suction pump P having a suction force to draw purified water.

In addition, the lower and upper caps 5 and 7 may be provided with other air inlet holes 5a and 7a at positions corresponding to the air inlet holes 1a and 3a. Of course, the purified water outlet holes 5a and 5b and the air inlet holes 1a, 3a, 7a, and 7b are illustrated by only showing the parts shown in one side in FIG. 1, but are provided in the same structure on the invisible side that is opposite. do.

The purified water outlet holes 5a and 7a are illustrated in the embodiment of the present invention by being disposed on one side of the lower or upper caps 5 and 7, but the present invention is not limited thereto. It can also be provided in the lower surface or the upper surface side of the upper cap 7.

As shown in FIG. 3, the air inlet holes 1a, 3a, 5b, and 7b preferably have a structure in which air is introduced by being connected to an air supply device C for generating air.

This hollow fiber membrane module is the opposite side of the side connected to the suction pump (P) and the air supply device (C) in order to make the inflow of purified water by the drive of the suction pump (P) and the air supply device (C) efficiently It is preferable to close the air inlet holes 1a, 3a, 5b, 7b provided in the above with a closing member such as a bolt 15.

In the hollow fiber membrane module of the present invention thus formed, when the suction pump P and the air supply device C are operated in the state of being immersed in waste water or the like, the hollow fiber 9 is pumped by the pumping action of the suction pump P. Only the purified water flows through the side surface and enters the space provided in the lower and upper caps 7 (only the upper caps are shown in FIG. 3) along the center portion of the hollow fibers 9.

The air generated by the air supply device C is transferred to the support pipe 13 through the air supply pipe 11 and discharged to the air discharge holes 13a. In this way, the air discharged through the air discharge hole 13a may move the hollow fibers 9 in a predetermined distance range to prevent contaminants from sticking to the hollow fibers 9. Therefore, the hollow fiber membrane module of the present invention can continuously withdraw purified water from waste water.

The support pipe 13 serves to discharge the air to the hollow fibers and at the same time serves to support the lower case 1 and the upper case 3 to be held at a predetermined distance.

Subsequently, a structure in which the hollow fiber membrane module units of the present invention are connected in plural by connecting means will be described in detail with reference to FIG. 4.

Connection means for connecting a plurality of units of the hollow fiber membrane module may be made by a connection pipe (17). That is, the hollow fiber membrane modules are arranged in parallel, and a connecting pipe 17 is arranged to penetrate through the air supply pipes 11. Of course, the connecting pipe 17 has a structure in which one side can be connected to the air supply device C, and there are a plurality of other air discharge holes 17a for transferring air to the supporting pipe 13 side. Is provided. In addition, the connection pipe 17 is provided with a groove (not shown) for fastening the bolt in one end thereof and may be closed at one end by the bolt 19. As described above, the bolt 19 serves to supply air only to the support pipe 13 when the air supply device C is operated, and at the same time, the units of the hollow fiber membrane module are integrally formed. Tighten to be combined.

In this case, of course, a general nut or the like may be disposed at the other end of the connection pipe 17 so that a plurality of units of the hollow fiber membrane module may be combined.

When the plurality of units of the hollow fiber membrane module are combined, the lower and the upper caps (only the upper caps are illustrated in FIGS. 5 and 7) are disposed one by one, and the plurality of lower and upper cases 1 and 3 are respectively arranged. ) To combine. Such a coupling example may be made by bonding or the like as described above. One end of the purified water outlet hole 7a is closed by another bolt 19 so that the suction action of the suction pump P is smoothly performed.

By using such a connecting means, a plurality of units consisting of the hollow fiber membrane module can be connected and applied regardless of a low capacity or a large capacity, thereby increasing design freedom, and manufacturing and combining one hollow fiber membrane module to produce a manufacturing cost. There is an advantage to reduce.

Figure 6 is a cross-sectional view showing another embodiment for connecting the unit of the hollow fiber membrane module and the adjacent unit in accordance with the present invention, Figure 7 is a perspective view showing a fastening member used as a connecting means, the air supply pipe Screw grooves 11a (shown in FIG. 6) are formed at both ends of the inner portion 11, and threaded portions 21a are provided to be screwed to the screw grooves 11a, and a purified water distribution line 21b is provided therein. The fastening member 21 provided is shown. The fastening member 21 having the distribution pipe line 21b may be connected to a plurality of hollow fiber membrane modules in parallel by screwing the support pipes 11 provided to the units of adjacent hollow fiber membrane modules to each other. Of course, the closing of the purified water extraction hole 7a can be made by coupling the bolt 19 or the like as described above.

As another example of the connecting means, as shown in FIG. 9, one side of the air supply pipe 11 is provided with a protruding tube 11c, and the other end may be a groove tube (not shown). The protruding tube 11c may have a screw thread formed on an outer circumferential surface thereof, and a corresponding groove tube may be provided with a screw groove on an inner circumferential surface thereof so as to be screwed to the protruding tube 11c. In addition, the protruding pipe 11c is merely protruded, and correspondingly, the grooved pipe may be connected to the fitting fitting so that an interference fitting coupling may be made. Therefore, in the hollow fiber membrane module, one end of the air pipe 11 adjacent to the protruding pipe 11c may be connected by a conventional fitting or screwing. Other configurations and operation effects are the same as the above-described examples, and will be replaced by the description.

Meanwhile, FIG. 8 is a view for explaining another example in which the upper case 3 and the upper cap 7 are coupled. In the above-described embodiment, an example in which the upper case 3 is coupled by bonding is described. To show. That is, the flange 3d is provided on the outer circumferential side of the upper case 3, and the outer circumference of the upper cap 7 is also provided with another flange 7d corresponding to the flange 3d, so that the flange 3d is provided. , 7d) may be coupled to a fastening member such as a bolt 35. In the description, only the coupling relationship between the upper case 3 and the upper cap 7 is described, but the coupling relationship between the lower case 1 and the lower cap 5 can also be described above.

These examples show that various embodiments of the present invention can achieve the desired effects of the present invention.

As described above, the present invention has an effect that it is easy to assemble according to the capacity by connecting two or more to cope with wastewater treatment plants of various capacities.

In addition, the present invention is to provide a hollow fiber membrane module that can be manufactured in a structure that can be bonded to each other hollow fiber membrane module units of the same type to reduce the production cost.

Claims (7)

At least one lower case having a space provided therein; A lower cap coupled to the lower case to form a predetermined space and provided with a purified water outlet hole at one side thereof to be connected to the suction pump; At least one upper case disposed at a predetermined distance from the lower case and provided with a predetermined space therein; An upper cap coupled to the upper case to form a predetermined space and provided with another purified water outlet hole at one side thereof to be connected to the suction pump; A plurality of hollow fibers respectively coupled to the lower case and the upper case such that the purified water absorbed from the side is moved to the lower case and the lower cap and the respective spaces formed by the upper case and the upper cap; An air supply pipe installed in the lower case and the upper case, disposed through one side, and connected to an air supply device to allow air to flow therein; A support pipe connected to allow air of the air supply pipe to be introduced therein, and supporting the lower case and the upper case and provided with a plurality of air discharge holes for discharging the introduced air; Hollow fiber membrane module comprising a. The hollow fiber membrane module of claim 1, wherein the hollow fiber membrane module is provided with a connecting means in the air supply pipe to couple at least two modules. 3. The hollow fiber membrane module according to claim 2, wherein the connecting means further comprises a connecting pipe which connects the air supply pipe and is provided with another air outlet hole. 3. The hollow fiber membrane module according to claim 2, wherein the connecting means comprises a fastening member having a distribution pipe so that air flows between adjacent air pipes. 3. The hollow fiber membrane module according to claim 2, wherein the connecting means comprises one side of the air pipe as a protruding tube, and the other end of the air pipe as a groove tube. The hollow fiber membrane module of claim 1, wherein the lower case and the lower cap, or the upper case and the upper cap are coupled by bonding. The hollow fiber membrane module of claim 1, wherein the lower case and the lower cap, or the upper case and the upper cap are flanged to each other.