JPH11169674A - Header for external pressure type hollow fiber membrane module and external pressure type hollow fiber module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a header for an external pressure type hollo fiber membrane module which header can be removed from a module outer tube quickly and without damaging the end face and an external pressure type hollow fiber membrane module provided with it. SOLUTION: In a header tube 5 of a header 500, a partition 51 by which it is divided into a raw water chamber 'a' and a permeated water chamber 'b' is installed, and the partition 51 is watertightly provided with raw water flowing pipes 52 passing through it. On the end face on the closed side of the header tube 5, a raw water inlet 71 communicating with the raw water chamber 'a' is provided, and on the outer peripheral surface of the header tube 5, a permeated water takeoff part 72 communicating with the permeated water chamber 'b' is provided. On the outer peripheral surface on the open side of the header tube 5, a flange part 8 for connecting the header tube 5 to a module outer tube ia provided. On the end face of the flange part 8 of the header tube 5, groove parts 81a, 81b in which pawl parts of a header attaching jig are to be inserted are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a header for an external pressure type hollow fiber membrane module and an external pressure type hollow fiber membrane module provided with the same.

[0002]

2. Description of the Related Art In recent years, fresh water or fresh water production processes have been developed.
Hollow fiber membrane module, tubular membrane module, flat membrane module to separate solid substances and soluble substances from raw water in various processes such as food and pharmaceutical manufacturing processes, domestic wastewater, industrial wastewater and other wastewater treatment processes Etc. are widely used.

The separation membrane module has a structure in which a module outer cylinder is filled with a large number of separation membranes such as a hollow fiber membrane, a tubular membrane, and a flat membrane. In particular, the hollow fiber membrane module has a feature that the packing density of the membrane is high and the membrane area can be increased.

However, in the hollow fiber membrane module,
When the raw water contains a high concentration of a solid substance, the solid substance is likely to be blocked between the hollow fiber membrane bundles and in the hollow fiber membrane. Therefore, the liquid is supplied to the outside of the hollow fiber membrane (external pressure type), the packing density of the hollow fiber membrane is reduced, a constant flow rate is provided along the hollow fiber membrane surface (cross flow), and the hollow fiber on the outlet side of raw water Measures such as sealing the film to a free state (one side free type) have been taken.

FIG. 4A is a sectional view of a conventional external pressure type hollow fiber membrane module for treating high-concentration raw water, and FIG. 4B is a partially enlarged sectional view of FIG. 4A.

As shown in FIG. 4A, a plurality of hollow fiber membranes 2 are accommodated in a module outer cylinder 1 of a module main body 100. At the open end of the module outer cylinder 1, a resin partition 3 is provided by resin injection. One end of the hollow fiber membrane 2 is supported by the resin partition 3 and opens to the outer surface of the resin partition 3 to form an open end 21.
The other end of the hollow fiber membrane 2 is a closed end 22 by closing the hollow portion, and is in a free state. A plurality of raw water supply ports 4 are provided in the resin partition 3 at equal intervals.
On the other hand, a raw water outlet 6 is provided on the end face of the module outer cylinder 1 opposite to the resin partition wall 3.

On the outer peripheral surface of the module outer cylinder 1 on the opening side,
A flange 9 for connecting the header 500 is provided. The header 500 allows the raw water to flow uniformly and in parallel to the bundle of the hollow fiber membranes 2 and the permeated water to the open end 2 of the hollow fiber membrane 2.
Used to remove from one.

In the header tube 5 of the header 500, there is provided a partition wall 51 for separating the raw water chamber a and the permeated water chamber b.
A raw water flow pipe 52 is provided through the partition wall 51 in a watertight manner. A raw water inlet 71 communicating with the raw water chamber a is provided at an end surface on the closed side of the header cylinder 5, and a permeated water outlet 72 communicating with the permeated water chamber b is provided on the outer peripheral surface of the header cylinder 5. A flange portion 8 for connection to the module outer tube 1 is provided on the outer peripheral surface on the opening side of the header tube 5.

[0009] As shown in FIG.
Into the raw water supply port 4 of the resin partition 3 via one or a plurality of O-rings 53, and connect the flange portion 8 of the header tube 5 and the flange portion 9 of the module outer tube 1 with a V band or the like. As a result, the header 500 is attached to the module main body 100.

In this external pressure type hollow fiber membrane module, raw water is supplied into the module outer cylinder 1 via the raw water inlet 71 of the header cylinder 5, the raw water chamber a, the raw water distribution pipe 52 and the raw water supply port 4. The supplied raw water flows toward the sealed end 22 of the hollow fiber membrane 2. During this time, the raw water is filtered by the hollow fiber membrane 2, and the permeated water purified by the filtration flows in the hollow fiber membrane 2 and is taken out from the permeated water outlet 72 via the permeated water chamber b of the header 500.

On the other hand, the raw water concentrated by filtration flows out of the raw water outlet 6 of the module outer cylinder 1. At the time of membrane cleaning, the waste water after the cleaning flows out from the raw water outlet 6 of the module outer cylinder 1.

[0012]

As described above, in the external pressure type hollow fiber membrane module for treating high-concentration raw water,
Since the header 500 needs to reliably isolate the raw water chamber a and the permeated water chamber b, the plurality of raw water distribution pipes 5
By attaching one or a plurality of O-rings 53 to the raw water supply pipe 2, the raw water flow pipe 52 of the header 500 is inserted into the raw water supply port 4 of the module body 100 in a watertight manner, and the flange 8 of the header cylinder 5 and the outside The flange portion 9 of the cylinder 1 is securely connected by a V band or the like.

Since the module outer tube 1 and the header tube 5 are connected in a watertight manner in this manner, during maintenance work such as membrane cleaning and membrane replacement, the header tube 5 connected by a V band or the like is used. It is necessary to insert a tool such as a screwdriver between the flange portion 8 and the flange portion 9 of the module outer cylinder 1 and remove the header cylinder 5 from the module outer cylinder 1 while kneading. In this case, it may take time to remove the header 500 or damage the end surfaces of the flange portions 8 and 9 to cause liquid leakage or the like.

An object of the present invention is to provide a header for an external pressure type hollow fiber membrane module which can be quickly removed from the module outer cylinder without damaging the end face, and an external pressure type hollow fiber membrane module provided with the header. .

[0015]

The external pressure type hollow fiber membrane module header according to the first aspect of the present invention is mounted on the end face of the module body on the opening side of the module outer cylinder, and is inserted into the module outer cylinder. In the header for the external pressure type hollow fiber membrane module for supplying the undiluted solution and taking out the permeated liquid from the module outer cylinder, a jig for removing the header is provided on the end face of the header cylinder which is joined to the end face on the opening side of the module outer cylinder. It is provided with an insertable groove.

When removing the header for the external pressure type hollow fiber membrane module according to the present invention from the module main body, the jig for removing the header is inserted into the groove on the end face of the header tube, and the jig for removing the header is moved up and down. By this operation, the header can be removed from the module main body.

In this case, the jig for removing the header can be easily inserted into the groove on the end face of the header tube. Also,
Since the header removing jig is securely fixed to the groove on the end surface of the header tube, the force of the header removing jig can be sufficiently applied to the header tube without damaging the end surface of the header tube. Therefore, the header can be efficiently removed, and the header can be quickly and reliably removed from the module body.

A flange portion is provided at the open end of the header tube for connection with the module outer tube, and at least one pair of grooves is formed at the end surface of the flange portion joined to the open end surface of the module outer tube. It may be provided.

In this case, the header removing jig can be easily inserted into the groove of the flange portion of the header tube.
Further, since the jig for removing the header is securely fixed to at least one pair of grooves of the flange of the header cylinder, the header jig can be sufficiently applied to the header cylinder without damaging the end face of the flange of the header cylinder. Can be acted upon.

In the header tube, there is provided a partition wall for separating the closed-side undiluted solution chamber and the open side permeated-liquid chamber, and the undiluted solution flow pipe for communicating the undiluted solution chamber with the undiluted solution supply port of the module main body penetrates the partition. The header cylinder may be provided with an undiluted liquid inlet communicating with the undiluted liquid chamber and a permeated liquid take-out port communicated with the permeated liquid chamber.

In the external pressure type hollow fiber membrane module using the header, the undiluted solution is supplied into the module outer cylinder via the undiluted solution inlet of the header tube, the undiluted solution chamber, the undiluted solution distribution pipe, and the undiluted solution supply port of the module body. The permeate obtained by the hollow fiber membrane of the main body is taken out from the permeate outlet through the permeate chamber of the header.

An external pressure type hollow fiber membrane module according to a second aspect of the present invention has a module main body having a module outer cylinder, a header cylinder joined to an end surface of the module outer cylinder on the opening side, and is provided in the module outer cylinder. In an external pressure type hollow fiber membrane module provided with a header for supplying a stock solution and taking out a permeated liquid from the module outer cylinder, a header removing jig is attached to an end face of the header cylinder which is joined to an open end face of the module outer cylinder. A groove portion into which a tool can be inserted is provided.

In the external pressure type hollow fiber membrane module according to the present invention, when removing the header from the module body,
The jig for removing the header is inserted into the groove on the end face of the header tube, and the jig for removing the header is moved up and down. By this operation, the header can be removed from the module main body.

In this case, the jig for removing the header can be easily inserted into the groove on the end face of the header tube. Also,
Since the header removing jig is securely fixed to the groove on the end surface of the header tube, the force of the header removing jig can be sufficiently applied to the header tube without damaging the end surface of the header tube. Therefore, the header can be efficiently removed, and the header can be quickly and reliably removed from the module body.

A flange portion for connecting to the module outer tube is provided at the opening end of the header tube, and a flange portion for connecting to the header tube is provided at the opening end of the module outer tube. At least one pair of grooves may be provided on the end surface of the flange portion of the header tube which is provided and is joined to the end surface of the flange portion of the module outer tube.

In this case, the header removing jig can be easily inserted into the groove of the flange portion of the header tube.
Further, since the jig for removing the header is securely fixed to at least one pair of grooves of the flange of the header cylinder, the header jig can be sufficiently applied to the header cylinder without damaging the end face of the flange of the header cylinder. Can be acted upon.

A plurality of hollow fiber membranes are accommodated in the module outer cylinder, and a resin partition wall for supporting one end of the plurality of hollow fiber membranes is provided at an opening of one end of the module outer cylinder. One end is opened outside the resin partition, and the other ends of the plurality of hollow fiber membranes are sealed, and the resin partition is provided with a stock solution supply port for supplying a stock solution outside the hollow fiber membrane,
An undiluted solution outlet is provided at the end of the module outer cylinder on the closed side, and a header partition is provided in the header cylinder to separate the closed-side undiluted solution chamber from the open side permeate chamber. An undiluted solution flow pipe communicating with the undiluted solution supply port of the resin partition may be penetrated, and the header tube may be provided with an undiluted solution inlet communicating with the undiluted solution chamber and a permeated liquid outlet opening communicated with the permeated liquid chamber.

In this external pressure type hollow fiber membrane module, the stock solution is supplied into the module outer tube via the stock solution inlet of the header tube, the stock solution chamber, the stock solution flow pipe, and the stock solution supply port of the module main body, and is supplied. The stock solution flows toward the sealed end of the hollow fiber membrane. During this time, the undiluted solution is filtered by the hollow fiber membrane, and the permeate purified by the filtration flows through the hollow fiber membrane and is taken out from the permeate outlet through the permeate chamber of the header. On the other hand, the stock solution concentrated by filtration is discharged from the stock solution outlet of the module outer cylinder.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an external pressure type hollow fiber membrane module header and an external pressure type hollow fiber membrane module provided with the same according to one embodiment of the present invention will be described.

FIG. 1A is a cross-sectional view of an external pressure type hollow fiber membrane module header according to one embodiment of the present invention, and FIG.
FIG. 2 is a bottom view of the external pressure type hollow fiber membrane module header of FIG. FIG. 2 is an enlarged cross-sectional view of the external pressure type hollow fiber membrane module header of FIG. The structure of the module main body 100 of the external pressure type hollow fiber membrane module of the present embodiment is the same as the structure shown in FIG.

In FIGS. 1A and 1B, the header 50
In the 0 header cylinder 5, a partition wall 51 that partitions the raw water chamber a and the permeated water chamber b is provided. A raw water flow pipe 52 is provided through the partition wall 51 in a watertight manner. A raw water inlet 71 communicating with the raw water chamber a is provided at an end surface on the closed side of the header cylinder 5, and a permeated water outlet 72 communicating with the permeated water chamber b is provided on the outer peripheral surface of the header cylinder 5. A flange portion 8 for connection to the module outer tube 1 is provided on the outer peripheral surface on the opening side of the header tube 5.

As shown in FIG. 1 and FIG.
On the end face of the flange portion 8, two pairs of grooves 81a and 81b for inserting a claw portion 11 of a header detaching jig (header removing jig) 10 shown in FIG. The shape of the grooves 81a and 81b is not limited to the shape shown in FIG. 1B, and various shapes are used.

An annular groove 82 is provided on the end face of the flange portion 8 of the header tube 5. By mounting an O-ring in the annular groove 82, the space between the end face of the flange portion 8 of the header tube 5 and the end surface of the flange portion 9 of the module outer tube 1 can be sealed watertight.

It should be noted that the annular groove 8 is not provided on the end surface of the flange portion 8 of the header tube 5, but the end surface of the flange portion 8 of the header tube 5 and the end surface of the flange portion 9 of the module outer tube 1 are sealed with packing. Is also good.

As in the case of the external pressure type hollow fiber membrane module shown in FIG. 4, the raw water flow pipe 52 is inserted into the raw water supply port 4 of the resin partition 3 through one or a plurality of O-rings 53 in a watertight manner. The header 500 is attached to the module main body 100 by connecting the flange 8 of the module outer cylinder 1 and the flange 9 of the module outer cylinder 1 with an annular elastic band such as a V band.

Also in the external pressure type hollow fiber membrane module of this embodiment, the raw water is supplied from the raw water inlet 71 of the header tube 5, the raw water chamber a,
The raw water is supplied into the module outer cylinder 1 via the raw water distribution pipe 52 and the raw water supply port 4, and the supplied raw water flows toward the sealed end 22 of the hollow fiber membrane 2. During this time, the raw water is filtered by the hollow fiber membrane 2, and the permeated water purified by the filtration flows in the hollow fiber membrane 2 and is taken out from the permeated water outlet 72 via the permeated water chamber b of the header 500.

On the other hand, the raw water concentrated by filtration flows out from the raw water outlet 6 of the module outer cylinder 1. At the time of membrane cleaning, the waste water after the cleaning flows out from the raw water outlet 6 of the module outer cylinder 1.

FIG. 3A is a front view of the header attaching / detaching jig 10, and FIG. 3B is a plan view of the header attaching / detaching jig 10.
As shown in FIG. 3, the header attaching / detaching jig 10 includes a semicircular operating section 12 and a rod-shaped gripping section 13.
A pair of claw portions 11 having a small thickness are formed inside the front end portion of each of them. The claw portion 11 of the header attachment / detachment jig 10 is
Are formed in a shape corresponding to the grooves 81a and 81b of the flange portion 8 of FIG.

When the header 500 is removed from the module body 100 in the external pressure type hollow fiber membrane module of this embodiment, the pair of claws 11 of the header attaching / detaching jig 10 shown in FIG. A pair of grooves 81a or 8
1b, and the jig 10 is moved up and down. The header 500 can be gradually removed from the module body 100 by repeating this operation while changing the groove portions 81a and 81b into which the header attaching / detaching jig 10 is inserted.

In this case, the claw portion 11 of the header attaching / detaching jig 10
Can be easily inserted into the grooves 81a and 81b of the flange 8 of the header tube 5. Also, the header attaching / detaching jig 10
Of the flange portion 8 of the header tube 5,
Since it is securely fixed to 81b, the force of the header attaching / detaching jig 10 can be sufficiently applied to the header tube 5 without damaging the end surface of the flange portion 8 of the header tube 5. Therefore, the header 500 can be efficiently removed, and the header 500 can be quickly and reliably removed from the module body 100.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view and a bottom view of an external pressure type hollow fiber membrane module header according to an embodiment of the present invention.

FIG. 2 shows the header A of the external pressure type hollow fiber membrane module shown in FIG.
FIG. 4 is an enlarged cross-sectional view taken along a line A.

FIG. 3 is a front view and a plan view of a header attaching / detaching jig.

FIG. 4 is a longitudinal sectional view and a partially enlarged sectional view of a conventional external pressure type hollow fiber membrane module.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Module outer cylinder 2 Hollow fiber membrane 3 Resin partition 4 Raw water supply port 5 Header cylinder 6 Raw water outlet 8, 9 Flange part 10 Header desorption jig 11 Claw part 21 Open end 22 Sealing end 51 Partition wall 52 Raw water distribution pipe 53 O-ring 71 Raw water inlet 72 Permeated water outlet 81a, 81b Groove 82 Annular groove 100 Module body 500 Header a Raw water chamber b Permeated water chamber

Claims (6)

[Claims] 1. An external pressure type hollow fiber membrane module mounted on an end face of a module main body on the opening side of a module external cylinder for supplying a raw liquid into the module external cylinder and removing a permeate from the module external cylinder. In the header for
A header for an external pressure type hollow fiber membrane module, wherein a groove for inserting a header removal jig is provided on an end surface of the header tube joined to an end surface of the module outer tube on the opening side. 2. A flange portion for connection with the module outer cylinder is provided at an end of the header cylinder on the opening side, and an end face of the flange portion joined to the opening end face of the module outer cylinder is provided on the end face of the flange section. 2. The external pressure type hollow fiber membrane module header according to claim 1, wherein at least one pair of the groove portions is provided. 3. A partition wall is provided in the header cylinder for separating a closed solution chamber and a permeate chamber on an opening side, and the partition solution communicates the stock solution chamber with a stock solution supply port of the module body. The external pressure type according to claim 1 or 2, wherein a stock solution flow pipe is provided, and the header tube is provided with a stock solution inlet communicating with the stock solution chamber and a permeate outlet for communicating with the permeate chamber. Header for hollow fiber membrane module. 4. A module main body having a module outer cylinder, a header cylinder joined to an end face on the opening side of the module outer cylinder, supply of undiluted solution into the module outer cylinder, and In an external pressure type hollow fiber membrane module provided with a header for taking out a permeated liquid, a groove is provided on an end surface of the header tube which is joined to an end surface on the opening side of the module outer tube so that a jig for removing a header can be inserted. An external pressure type hollow fiber membrane module characterized in that: 5. A flange portion for connecting to the module outer tube is provided at an end of the header tube on the opening side,
An end of the module outer cylinder on the opening side is provided with a flange for connection with the header cylinder, and an end face of the flange of the header cylinder joined to an end face of the flange of the module outer cylinder. The external pressure type hollow fiber membrane module according to claim 4, wherein at least one pair of the groove portions is provided in the hollow fiber membrane module. 6. A plurality of hollow fiber membranes are accommodated in the module outer cylinder, and a resin partition wall supporting one end of the plurality of hollow fiber membranes is provided at an opening of one end of the module outer cylinder, One end of the plurality of hollow fiber membranes is open to the outside of the resin partition, and the other end of the plurality of hollow fiber membranes is sealed, so that the resin partition supplies a stock solution to the outside of the hollow fiber membrane. A raw liquid supply port is provided, a raw liquid outlet is provided at an end on the closed side of the module outer cylinder, and a header partition partitioning the raw liquid chamber on the closed side and the permeate liquid chamber on the open side is provided in the header cylinder. A raw liquid flow pipe is provided through the header partition wall to communicate the raw liquid chamber to the raw liquid supply port of the resin partition wall, and the header tube communicates with the raw liquid inlet and the permeate liquid chamber communicating with the raw liquid chamber. With a permeate outlet The external pressure type hollow fiber membrane module according to claim 4 or 5, wherein: