KR100705546B1 - Submerged hollow fiber membrane module - Google Patents

Abstract

In order to provide a submerged hollow fiber membrane membrane module that can be easily unitized to simplify the system, minimize the installation area, minimize the contamination of the membrane surface with effective cleaning, and easily cope with the increase in the processing capacity.

An upper head having a hollow fiber membrane, a catchment space for holding and fixing the upper end of the hollow fiber membrane, and a filtered water outlet through which filtered water is discharged, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane. A lower head assembly having an assembly, a support for fixing a lower end of the hollow fiber membrane, a collecting space for storing filtered water, a filtered water outlet for discharging the filtered water of the collecting space, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane And a connector coupled to both sides of the upper head assembly and the lower head assembly to connect the hollow fiber membrane module to serve as a discharge pipe of the treated water collected in the collection spaces of the upper and lower head assemblies, and an inlet pipe of the cleaning air; The hollow fiber membrane module seals one end of the connector to flow the treated water and the cleaning air. And an immersion hollow fiber membrane including an end cap facing the side and an air nozzle provided in the upper head assembly, the lower head assembly, or the upper and lower head assemblies to receive the cleaning air supplied through the cleaning air supply port and to spray the hollow fiber membrane. Provides a membrane module.

Accordingly, since the immersion type hollow fiber membrane membrane module of the present invention can connect a plurality of hollow fiber membrane modules through the connector, it is possible to simply remove the desired module when the module is replaced or the module is damaged, and the desired processing capacity by the connection of the connector The hollow fiber membrane module unit can be installed.

In addition, since the upper and lower head assemblies are made of the same structure, it is possible to facilitate the manufacture of the parts, and to share the parts.

Hollow fiber, hollow fiber membrane, separator, module, immersion type, water treatment

Description

Submerged Hollow Fiber Membrane Module {SUBMERGED HOLLOW FIBER MEMBRANE MODULE}

1 is a perspective view of a module unit constructed using a hollow fiber membrane module according to the prior art.

Figure 2 is an exploded perspective view of the hollow fiber membrane module according to the present invention.

Figure 3 is an enlarged perspective view of the head assembly provided in the hollow fiber membrane module of the present invention.

Figure 4a is a perspective view of the connector provided in the hollow fiber membrane module of the present invention.

Figure 4b is a left side view of the connector provided in the hollow fiber membrane module of the present invention.

Figure 4c is a front view of the connector provided in the hollow fiber membrane module of the present invention.

Figure 5a is a perspective view of the end cap provided in the hollow fiber membrane module of the present invention.

Figure 5b is a left side view of the end cap provided in the hollow fiber membrane module of the present invention.

The present invention relates to an immersion type hollow fiber membrane module, and more particularly, to an immersion type hollow fiber membrane membrane module that can easily unitize the immersion type hollow fiber membrane module, thereby simplifying installation of a system and easily coping with an increase in processing capacity.

Compared to the separation method using heating or phase change, the method of solid-liquid separation using a separation membrane has many advantages. One of them is that the desired water quality can be stably obtained according to the pore size of the separator, thereby increasing the reliability of the process. In addition, since the use of the separation membrane does not require an operation such as heating, there is an advantage that it can be widely used in a separation process using microorganisms that may be affected by an operation such as heating. Due to these advantages, the membrane is widely used in the treatment of waste and wastewater, the treatment of industrial wastewater, the treatment of drinking water, and the separation process in pharmaceutical and industrial fields.

One of the solid-liquid separation methods using the separation membrane is a hollow fiber membrane module formed by bundles of hollow fiber membranes, and one of the hollow fiber membrane modules is directly immersed in a water tank of the fluid to be treated, and inside the hollow fiber membrane There is an immersion hollow fiber membrane module that separates solid and liquid by applying a vacuum to penetrate the inside of the hollow fiber. The submerged hollow fiber membrane module can lower the manufacturing cost of the module, there is no need for the equipment for the circulation of the fluid has the advantage of bringing down the facility cost or operating cost.

The most common submerged hollow fiber membrane module is an "I" shaped module in which both ends of the hollow fiber bundles are fixed to the upper head and the lower head by using an adhesive, and the hollow fiber bundles are folded in a U-shape to integrate both ends into one to the upper head. There is a fixed "U" shaped module, which can be used for small-volume biological sewage / wastewater treatment processes.

In addition, in the case of the immersion hollow fiber membrane module, in order to solve the problem that membrane contamination occurs when treating sewage / wastewater or undiluted solution containing membrane contaminants including solid components, thereby reducing permeability. A method of removing airborne membrane contaminants from the membrane surface by exhaling air is used.

The hollow fiber membrane module as described above is generally installed in the form of a module unit in which several modules are connected in series or in parallel, and in this state, the liquid to be treated is filtered.

By the way, such a hollow fiber membrane module of the prior art is a plurality of hollow fiber membrane modules (110a, 110b, 110c), as shown in Figure 1 in a place requiring a large capacity of processing capacity, for example, biological wastewater treatment process. When using the module unit 100 in which 110 n) is connected in series (or in parallel), a discharge pipe for discharging the treated water filtered by these hollow fiber membrane modules 110a, 110b, 110c, ... 110n (112a, 112b, 112c, ... 112n) is provided on the upper side of the hollow fiber membrane module (110a, 110b, 110c, ... 110n), or not shown, but the lower side of the module, or both the upper and lower sides of the module The structure provided in each is employ | adopted.

Therefore, the conventional hollow fiber membrane module has a problem in that a plurality of exhaust pipes must be provided and a support frame (not shown) for supporting each module of the hollow fiber membrane module unit must be separately added.

In addition, when installing a diffuser (not shown) in the lower portion of the module unit 100 and configured to remove contaminants on the surface of the hollow fiber membrane using the fine air bubbles generated therein, an air supply line must be added separately. There is a problem, there is a problem that the cleaning effect between the separation membrane is reduced by spraying the cleaning air from the outside of the separation membrane module and the suspended matter is deposited a large amount between the separation membrane of the lower module.

Due to these problems, the conventional hollow fiber membrane module has a problem that the system is complicated or requires a large installation area, and is vulnerable to unitizing several hollow fiber membrane modules in series or parallel to increase processing capacity.

The present invention is to solve the above problems, the object of the present invention is to simplify the system by minimizing the unit, to minimize the required installation area, to minimize the contamination of the surface of the membrane by effective cleaning, easy to increase the processing capacity It is to provide an immersion type hollow fiber membrane module that can be responded easily.

In order to achieve the above object, the present invention,

Hollow fiber membranes;

An upper head assembly fixedly supporting an upper end of the hollow fiber membrane and having a collecting space for storing filtered water, a filtered water outlet through which the filtered water of the collecting space is discharged, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane;

A lower head assembly fixedly supporting the lower end of the hollow fiber membrane and having a collecting space for storing filtered water, a filtered water outlet through which the filtered water of the collecting space is discharged, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane;

A connector coupled to each of the upper head assembly and the lower head assembly, respectively, to connect the hollow fiber membrane module to serve as a discharge pipe of the treated water collected in the collecting spaces of the upper and lower head assemblies and an inlet pipe of the cleaning air;

An end cap sealing one end of the connector to direct the flow of the treated water and the cleaning air to the hollow fiber membrane module;

An air nozzle provided in the upper head assembly, the lower head assembly, or the upper and lower head assemblies to receive the cleaning air supplied through the cleaning air supply port and to spray the hollow fiber membrane;

It provides a submerged hollow fiber membrane module comprising a.

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

2 is an exploded perspective view of the hollow fiber membrane membrane module according to an embodiment of the present invention, Figure 3 is an enlarged view of the head assembly provided in the hollow fiber membrane membrane module of the present invention, Figure 4 is a hollow fiber membrane membrane module of the present invention Figure 5 is a view for explaining the structure of the connector provided in, Figure 5 is a view for explaining the end cap provided in the hollow fiber membrane module of the present invention.

As illustrated, the immersed hollow fiber membrane separator module of the present invention includes a hollow fiber membrane 2 and an upper head assembly 4 and a lower head assembly 6 for fixing and supporting the upper and lower ends of the hollow fiber membrane 2, respectively. Include.

The hollow fiber membrane (2) is made of a microfiber weave having a predetermined length and formed into a space, and has a filtration function to filter impurities or bacteria contained in sewage or wastewater can be applied to those commonly used in water treatment Therefore, detailed description is omitted.

The upper and lower head assemblies 4 and 6 may have the same structure and may be used anywhere in the upper and lower portions of the hollow fiber membrane 2, and thus the same parts are assigned the same reference numerals.

The upper and lower head assemblies 4 and 6 may include a head main body 8 to which end portions of the hollow fiber membranes 2 are fixed by an adhesive, and a cleaning air supply port 10 coupled to the head main body 8. And an air nozzle 12 which is assembled to the cleaning air supply port 10 and blows air to the hollow fiber membrane, and a bottom cover 14 which is assembled to the head body 8.

The cleaning air supply port 10 inserted into the head main body 8 may be applied to the head main body 8 by using an adhesive in addition to the insertion, and a ring is connected to the connection part to seal the connection part. Can also be inserted.

As described above, since the upper and lower head assemblies 4 and 6 have the same structure, the parts can be shared, and thus, fabrication and assembly can be facilitated.

And the frame 16 of the same or similar material is installed along the outer surface of the hollow fiber membrane 2 for the installation and support of the upper and lower head assembly (4) (6), the upper and lower head assembly (4) The frame 16 can be inserted into and fixed to both ends of each head main body 8 constituting the 6).

In addition, an insertion groove 20 for assembling the cleaning air supply port 10 is formed at one side of each head body 8, and after injecting adhesive into the insertion groove 20 to prevent leakage. The head body 8 and the cleaning air supply port 10 may be fixed by inserting the fixing part 22 of the cleaning air supply port 10.

In addition, a water collecting space 23 is formed inside each of the head main bodies 8, and a filtered water outlet 24 for discharging the filtered water collected in the water collecting space 23 on the side of each of the head main bodies 8. ) Is provided.

In addition, the air nozzle 12 assembled with the cleaning air supply port 10 is provided with a plurality of holes 26 through which air is injected, so that the cleaning air introduced through the cleaning air supply port 10 is an air nozzle 10. Sprayed through).

Connectors 28 are respectively connected to both head bodies 8 constituting the upper and lower head assemblies 4 and 6. On the side of the connector 28, the filtered water outlet connection part 30 and the cleaning air supply port connection part 32, into which the filtered water outlet 24 and the cleaning air supply port 10 of the head body 8 are inserted, can be connected. Is formed, and made to pass through each of them, when connecting a plurality of membrane modules, one side protrudes to the connector 34 so as to connect the connector 28 and the other connector, respectively, the other side is inserted into the connector as described above Connecting holes 36 are formed.

Each of the connector 34 and the connection hole 36 penetrates the inside of the connector 28 to form a pair formed in the form of a conduit. The filtered water outlet connection portion 30 is made to communicate with one connector 34 and the connection hole 36, the cleaning air supply connection portion 32 is connected to the other connector 34 and the connection hole 36 Is done.

Through this structure, the treated water that has passed through the hollow fiber membrane 2 is collected in the water collecting space 23 of the upper and lower head bodies 8, and then the filtered water formed in the connector 28 through the filtered water outlet 24. The outlet port 30 passes through the connector 34 of the connector 28.

When several hollow fiber membrane modules are connected, the treated water collected through the connector 28 connected to each module is treated out of the system through the connection hole 34 and the connection hole 36, which are the connection passages between the connectors 28. It is discharged to the discharge pipe 38. In the membrane module, the air injected to remove the foreign matter adhering to the surface of the separator is installed outside the system and is supplied through a blower or a compressor (not shown), and the inflow path thereof is connected to the air pipe 40. It is injected into the hollow fiber membrane 2 through the hole 26 of the air nozzle 12 through the connector 34 of the connector 28 and the cleaning air supply connector 32.

In addition, a fixing groove 42 is formed in the upper and lower portions of one side of the connector 28 so as to be firmly fixed when the connector 28 and the other connector are connected, and maintain a constant distance in the same direction and the fixing groove on the other side of the connector 28. The engaging portion 44 which is detachably assembled to the 42 is formed.

The engaging portion 44 is provided with an outward elasticity to be elastically attached to the fixing groove 42 to allow the connectors 28 to be firmly connected to each other, and to act to separate the connected connectors 28, According to the structure, a plurality of hollow fiber membrane modules can be connected in series according to the processing capacity, wherein one side of the connector 28 is connected to the hollow fiber membrane module and the other side is connected to another connector.

In addition, the end cap 46 is inserted and sealed in the connection hole 36 at one end of the connector 28. The end cap 46 has an insertion hole 48 which is tightly inserted into the connection hole 36 of the connector 28, and upper and lower portions thereof are elastically detachable to the fixing groove 42 of the connector 28. A locking part 50 to be fixed is formed.

When the end cap 46 is sealed by inserting an insertion hole 48 provided with a packing (rubber ring) or the like into the connection hole 36 of the connector 28 into the connection hole 36 of the end connector 28, It serves to prevent the filtered water and the introduced air from being mixed with the water to be treated.

The upper and lower head assembly (4) (6) may be formed to insert a separate insertion groove and to be more firmly fixed by inserting a support rod there.

In addition, the purpose of installing the bottom cover 14 of the upper and lower head assemblies 4 and 6 is that when the water treatment is performed by installing the module unit, the floating material accumulates in the fat part of the upper head body 8 so that it is aesthetically pleasing. This is to create an unclean environment or to prevent the use of a breeding ground for microorganisms, especially in an environment rich in organic matter such as waste water.

Each module as described above is first fixed by the connector 28, the connector 28 is fixed by a rectangular skid (not shown) or a skid manufactured to be suitable for the square and module shape outside the module unit It may be fixed by (not shown).

And after arranging several hollow fiber membrane modules in a row, the module unit can be comprised by integrally connecting by connecting the connector of another connector to the connection hole 36 of the connector for connector 28 fixedly. At this time, the air pipe and the treated water discharge pipe of each module should be kept in a sealed state with each other. For this purpose, when connecting the connector 28, inserting a packing (rubber ring) to increase the sealing force to the connector 34 The groove 52 is formed.

In the hollow fiber membrane module as described above, the cleaning air supply and the discharge of the filtered water may be performed at both the upper and lower head assemblies 4 and 6 or at either side.

In this case, when the cleaning air is supplied only from the lower head assembly 6 and the filtered water is discharged only from the upper head assembly 4, the air pipe of the upper head assembly 4 and the discharge pipe of the lower head assembly 6 do not need to be installed. It's okay.

The hollow fiber membrane module unit is connected to an air supply device not shown in the air pipe 40 connected to the outermost connector 28, and the discharge pipe 38 connected to the outermost connector 28 is not shown. After connecting to the non-suction pump, and driving the air supply device and the suction pump, the untreated water inside the treated water bath in which the membrane module unit is installed is filtered by the hollow fiber membrane 2, and the filtered filtrate is the upper and lower heads. After being collected in the collecting space 23 of the assembly 4, 6, it is introduced into the connector 28 through the filtered water outlet 24, and then sucked into the discharge pipe 38 by the suction pump and discharged to the outside.

Then, the air supplied through the air pipe 40 from the air supply device such as a blower or a compressor during the filtration operation as described above is the hole 26 of the air nozzle 12 of the upper and lower head assembly (4) (6) Sprayed to the hollow fiber membrane (2) through to form a fine air bubble by the air is raised to remove the contaminants on the surface of the hollow fiber membrane (2).

As described above, the present invention can form a module unit by a simple operation of integrally coupling each module by using the connector 28 in a state in which several hollow fiber membrane modules are arranged in a line according to a required processing capacity. .

Thus, in the immersion type hollow fiber membrane membrane module of the present invention, since the air pipe for cleaning and the discharge pipe for filtration water discharge are made by the connector, only a desired module can be easily removed when the module is replaced or the module is damaged. By connecting the hollow fiber membrane module unit to the desired processing capacity can be installed.

Therefore, it is possible to cope with various capacity water treatment plants, and can easily cope with an increase in treatment capacity, and the biggest advantage is that an air nozzle for cleaning the surface of the membrane is installed between the membranes to be deposited between the membranes or inside the membrane. The foreign matter adhering to the surface of the hollow fiber can be effectively cleaned.

In addition, since the upper and lower head assembly, and the cleaning air supply port and the air nozzle constituting the same are made of the same structure, the parts can be shared.

Claims (7)

Hollow fiber membranes; An upper head assembly fixedly supporting the upper end of the hollow fiber membrane and having a collecting space for storing filtered water, a filtered water outlet through which the filtered water of the collecting space is discharged, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane; A lower head assembly fixedly supporting the lower end of the hollow fiber membrane and having a collecting space for storing filtered water, a filtered water outlet through which the filtered water of the collecting space is discharged, and a cleaning air supply port for supplying compressed air to one side of the hollow fiber membrane; A connector coupled to each of the upper head assembly and the lower head assembly, respectively, to connect the hollow fiber membrane module to serve as a discharge pipe of the treated water collected in the collecting spaces of the upper and lower head assemblies and an inlet pipe of the cleaning air; An end cap sealing one end of the connector to direct the flow of the treated water and the cleaning air to the hollow fiber membrane module; An air nozzle provided in the upper head assembly, the lower head assembly, or the upper and lower head assemblies to receive the cleaning air supplied through the cleaning air supply port and to spray the hollow fiber membrane; Immersion type hollow fiber membrane module comprising a. The immersion type hollow fiber membrane membrane module according to claim 1, wherein a frame is installed on an outer surface of the hollow fiber membrane, and grooves for fixing the frame are formed on upper and lower head assemblies. The immersion type hollow fiber membrane membrane module according to claim 1, wherein the connector has a filtered water outlet connection part and a cleaning air supply connection part which are inserted into and connected to the filtered water outlet and the cleaning air supply port formed in the head body. The connector of claim 1, wherein one side of the connector protrudes into a connector so that the connector and the other connector can be connected to each other when the plurality of hollow fiber membrane membrane modules are connected. Immersion hollow fiber membrane module, characterized in that formed. The method of claim 1, wherein a fixing groove is formed on one side of the connector for a firm fixing when the connector and the other connector is connected, maintaining a constant distance in the same direction, and the other side is formed with a locking portion detachably assembled to the fixing groove Immersion type hollow fiber membrane module, characterized in that. The immersion type hollow fiber membrane membrane module according to claim 1, wherein cleaning air is supplied to the hollow fiber membrane through the connector or filtered filtrate is discharged. The immersion type hollow fiber membrane membrane module according to claim 1, wherein the end cap is inserted into a connection hole of the connector to close the insertion hole, and the insertion hole is provided with a packing to increase the sealing force.

Images