JP2006247608A - Membrane module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a membrane module of which a separation membrane is easily exchanged in relation to a membrane module and a membrane module support for water treatment. <P>SOLUTION: This membrane module comprises two heads 11, 21, a tie rod 31 detachably connecting the two heads 11, 21 with a desired space, and tubular separation membranes 41, 42. The first head 11 comprises a water-inlet passage 12 and a water-outlet passage 13, the second head 21 comprises a liquid passage 22, and the tubular separation membranes 41, 42 are supported by the two heads 11, 21, and a bolt 34. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a membrane module for water treatment and a support for the membrane module.

  When water treatment is performed using a membrane module, it is important to select and use a membrane having a filtering ability in accordance with the state of the raw water, because the raw water to be treated has various stains and treatment amounts.

  In the membrane module, a header and a pipe connected to the header are used together with the separation membrane. Usually, the separation membrane is fixed to the header, and the pipe can be connected to the header. For this reason, once it is installed, it is difficult to replace only the separation membrane with another one. For example, when using a separation membrane with a larger processing capacity, the entire membrane module must be replaced. Become.

When it is necessary to change the filtration capacity in this way, it is necessary to replace the entire membrane module. Conventionally, therefore, it is necessary to prepare a plurality of membrane modules, which may increase operating costs. It has become.
JP-A-9-99222

  Patent Document 1 discloses a hollow fiber membrane module unit in which a plurality of sheet-like hollow fiber membranes can be removably inserted into guide grooves.

  It is an object of the present invention to provide a membrane module that uses a separation membrane element and that can selectively use a separation membrane having different filtration capacities as required, and a membrane module support used therefor.

As a means for solving the problems, the present invention
A membrane module having two heads, a tie rod capable of detachably connecting the two heads at desired intervals, and a plurality of separation membrane elements;
A first head that is one of the two heads has a plurality of first liquid passages to which a plurality of separation membrane elements can be detachably connected, and the plurality of first liquid passages have at least a water inlet channel and a water outlet channel. And
The second head, which is the other of the two heads, has one or more second liquid passages to which a plurality of separation membrane elements can be detachably connected,
A membrane module in which a plurality of separation membrane elements are supported by the two heads is provided.

  The shape of the separation membrane element is not particularly limited as long as it is a combination of the separation membrane and its support and has a structure that can be connected to the liquid passage of the head. The separation membrane element includes a tube-shaped case made of synthetic resin or metal and a hollow fiber membrane bonded and fixed at the end in a pipe-shaped case made of synthetic resin or FRP. Examples include a housed one or a pipe-shaped case made of a synthetic resin or FRP and a water collecting pipe provided in the center and a bag-like flat membrane wrapped around the pipe. A tubular separation membrane element is preferred. The type and material of the separation membrane are not limited, and known separation membranes such as a tubular type, a hollow fiber type, and a spiral type can be selected and used.

  In this way, by making the two heads having liquid passages and the separation membrane element detachable, separation membranes having different filtration capacities can be selected and used as required, so it is necessary to prepare a plurality of membrane modules. Disappear.

  According to another aspect of the present invention, a tie rod is passed through a through hole of the first head, and the first head can slide the tie rod in the through hole by a desired length in the axial direction. A membrane module as described is provided.

  Thus, by moving the first head in the axial direction, the separation membrane element can be removed and replaced with another separation membrane element. A through hole is provided in the second head, and a tie rod is passed through the second head, so that the second head can also slide the tie rod in the axial direction in the same manner as the first head.

  In another aspect of the present invention, the first head has a water inlet pipe and a water outlet pipe connected to the water inlet path and the water outlet path on the non-connection surface with the separation membrane element. A membrane module according to 2, is provided.

  Thus, by having a structure having a water inlet pipe and a water outlet pipe, it is easy to connect the raw water pipe and the permeate pipe.

The present invention also provides a solution to other problems.
It has a tie rod that can detachably connect two heads and two heads at desired intervals.
The first head which is one of the two heads has a plurality of first liquid passages to which a plurality of separation membrane elements can be detachably connected, and the plurality of first liquid passages have at least a water inlet channel and a water outlet channel. And
The second head, which is the other of the two heads, has one or more second liquid passages to which a plurality of separation membrane elements can be detachably connected,
Provided is a membrane module support that can support a plurality of separation membrane elements by two heads.

  Thus, by making the two heads having the liquid passages and the separation membrane element detachable, separation membranes having different filtration capacities can be selected and used according to demand, so that it is not necessary to prepare a plurality of membrane modules. .

  In another aspect of the present invention, a tie rod is passed through a through hole of the first head, and the first head can slide the tie rod in the through hole by a desired length in the axial direction. Item 4. A membrane module support according to Item 4 is provided.

  Thus, by moving the first head in the axial direction, the separation membrane element can be removed and replaced with another separation membrane element. A through hole is provided in the second head, and a tie rod is passed through the second head, so that the second head can also slide the tie rod in the axial direction as in the first head.

  In another aspect of the present invention, the first head includes a water inlet pipe and a water outlet pipe connected to the water inlet path and the water outlet path on the non-connection surface with the separation membrane element. A support for a membrane module according to 4 or 5 is provided.

  Thus, by having a structure having a water inlet pipe and a water outlet pipe, it is easy to connect the raw water pipe and the permeate pipe.

  According to the membrane module and the membrane module support of the present invention, separation membranes having different filtration capacities and separation membranes having different types (uses and membrane structures) can be selectively used according to demands, so a plurality of membrane modules are prepared. This eliminates the need for operation costs.

  The membrane module and the membrane module support will be described with reference to the drawings. FIG. 1 is a plan view of a membrane module (a portion excluding a tubular separation membrane serving as a separation membrane element serves as a support for the membrane module), and FIGS. 2 and 3 are the membrane modules of FIG. It is a top view for demonstrating the replacement | exchange method of the separation membrane element in a support tool.

  The membrane module 10 includes a first head 11 and a second head 21, a tie rod 31, and tubular separation membranes 41 and 42 that serve as two separation membrane elements. Here, what remove | excluded the two tubular separation membranes 41 and 42 becomes a support for membrane modules.

  Inside the first head 11, a water inlet 12 and a water outlet 13 to which one end sides of the tubular separation membranes 41 and 42 are connected are provided, and a water inlet pipe 14 for raw water is connected to the water inlet 12. A condensate water discharge pipe 15 is connected to the water discharge path 13.

  The shapes and diameters of the water inlet 12 and the water outlet 13 are adjusted so that the tubular separation membranes 41 and 42 can be connected.

  The water intake pipe 14 has a screw portion 14b at a portion ahead of the flange 14a, and is connected to a raw water pipe at the screw portion 14b. The water discharge pipe 15 has a screw portion 15b at a portion ahead of the flange 15a, and is connected to a permeate pipe at the screw portion 15b.

  One liquid passage 22 having an inlet 23 and an outlet 24 is provided in the second head 21. The shapes and diameters of the inlet 23 and the outlet 24 are adjusted so that the tubular separation membranes 41 and 42 can be connected.

  The size of the first head 11 and the second head 21 is set according to the number of tubular separation membranes to be connected. Further, for example, the water inlet 12 (and the water inlet pipe 14) may be provided in the first head 11, and the water outlet 13 (and the water outlet 15) may be provided in the second head 21, or vice versa.

  The tie rod 31 is provided with a screw portion 32 at a required length portion on one end 31 a side, the one end 31 a side is passed through the support hole 17 provided in the first head 11, and the other end side is connected to the second head 21. It is attached. The inner surface of the support hole 17 is a smooth surface, and the first head 11 can slide on the tie rod 31 in the support hole 17. The attachment portion of the tie rod 31 to the second head 21 may be fixed, or may be detachable by screwing or the like.

  The tubular separation membranes 41 and 42 have one end side tip portions 41 a and 42 a fitted in the water inlet channel 12 and the water outlet channel 13 of the first head 11, and the other end side tip portion is the inlet 23 and outlet of the second head 21. 24. The inlet 23 and outlet 24 side of the second head 21 may be connected by screwing together. Sealing members can be interposed between the tubular separation membranes 41, 42, the connection part between the water inlet 12 and the water outlet 13, and the connection part between the inlet 23 and the outlet 24.

  From the viewpoint of maintaining the balance of the membrane module 10, the number of tubular separation membranes is preferably such that both sides are the same number across the tie rod 31, that is, the whole is an even number, but the whole is an odd number. You may do it.

  The first head 11 is tightened with a bolt 34 screwed from the end 31a side of the tie rod 31 so that the tubular separation membranes 41 and 42 are sandwiched and supported from both sides by the first head 11 and the second head 21. Thus, it is fixed at a predetermined position.

  In the membrane module 10, the bolt 34 is moved to the end 31 a side and the first head 11 is moved in the axial direction, whereby the distance between the first head 11 and the second head 21 is set to a desired distance (the tubular separation membrane to be used). 41, 42). For this reason, since the tubular separation membrane can be easily attached and detached, a desired tubular separation membrane can be selectively used.

  Next, a method of exchanging the tubular separation membranes 41 and 42 with different tubular separation membranes 51 and 52 in the membrane module 10 will be described.

  In FIG. 1, the bolt 34 is loosened and moved to the end 31 a side of the tie rod 32, and the first head 11 is also moved. At this time, as shown in FIG. 2, the bolt 34 may be removed from the tie rod 34, and the first head 11 may also be removed from the tie rod 34. As shown in FIG. 3, the bolt 34 and the first head 11 are connected to the end 31a. You may keep it nearby. In addition, when replacing | exchanging the thing longer than the tubular separation membranes 51 and 52 of FIG. 3, the workability | operativity becomes better in the state of FIG.

  Next, the tubular separation membranes 41 and 42 are removed from the second head 21 and replaced with longer tubular separation membranes 51 and 52 (with a larger effective membrane area) (FIG. 3).

  Thereafter, in the state of FIG. 3, the first head 11 is pushed in as it is (in the state of FIG. 2, the first head 11 is fitted from the end portion 31a, and further the first head 11 is pushed in), and the water inlet 12 is made into the tubular separation membrane. 51 is fitted into the end 51a of the 51, and the water discharge channel 13 is fitted into the end 52a of the tubular separation membrane 52. Then, the bolts 34 are screwed in, and the first head 11 is fixed so as to be in a state as shown in FIG.

  In addition, when a tube-shaped separation membrane having a different thickness is used for replacement, the diameter is adjusted to the water inlet 12, the water outlet 13 on the first head 11 side, the inlet 23 on the second head 21 side, and the outlet 24. It is possible to apply a method of connecting tubular separation membranes having different diameters through an adapter after connecting the adapter for use.

  Further, when the length of the tubular separation membrane before and after the exchange is greatly different and the tie rod used at the beginning cannot be used, the tie rod itself can be exchanged for a longer one.

  The membrane module and membrane module support of the present invention can be applied to water treatment applications in various fields, but particularly when the amount to be treated is small, for example, one or a plurality of small sample solutions are treated with a plurality of separation membranes. It is suitable in such a case.

The membrane module shown in FIG. 1 was assembled. Details of each part are as follows.
First head 11
Material: SUS
Diameter of inlet channel 12: 1.7 cm
The diameter of the drainage channel 13: 1.7 cm
Second head 21
Material: SUS
Diameter of entrance 23: 1.7 cm
Diameter of outlet 24: 1.7cm
Tie rod 31
Material: SUS
Diameter: 1.4cm
Length: 50cm
Screw portion 32 length: tube-shaped separation membranes 41 and 42 provided in a range from 0.5 to 25.5 cm from the end portion 31a.
A tube case (made of Noryl resin, diameter 1.7 cm, length 25.5 cm) containing a polyacrylonitrile membrane as a surface separation membrane (trade name DUYL010, manufactured by Daisen Membrane Systems)
Since the total length of the screw portion 32 of the tie rod 31 is 25.0 cm, in consideration of fixing by the bolt 34, a separation membrane element having a length in the range of about 25 to 45 cm can be selectively used.

The top view of a membrane module. Explanatory drawing of the replacement | exchange method of the film | membrane in a membrane module. Explanatory drawing of the replacement | exchange method of the film | membrane in a membrane module.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Membrane module 11 1st head 21 2nd head 31 Tie rod 41, 42, 51, 52 Tubular separation membrane

Claims (6)

A membrane module having two heads, a tie rod capable of detachably connecting the two heads at desired intervals, and a plurality of separation membrane elements;
A first head that is one of the two heads has a plurality of first liquid passages to which a plurality of separation membrane elements can be detachably connected, and the plurality of first liquid passages have at least a water inlet channel and a water outlet channel. And
The second head, which is the other of the two heads, has one or more second liquid passages to which a plurality of separation membrane elements can be detachably connected,
A membrane module in which a plurality of separation membrane elements are supported by the two heads.   The membrane module according to claim 1, wherein a tie rod is passed through a through hole of the first head, and the first head can slide the tie rod in the axial direction by a desired length in the through hole.   The membrane module according to claim 1 or 2, wherein the first head has a water inlet pipe and a water outlet pipe connected to the water inlet path and the water outlet path on a non-connection surface with the separation membrane element. It has a tie rod that can detachably connect two heads and two heads at desired intervals.
The first head which is one of the two heads has a plurality of first liquid passages to which a plurality of separation membrane elements can be detachably connected, and the plurality of first liquid passages have at least a water inlet channel and a water outlet channel. And
The second head, which is the other of the two heads, has one or more second liquid passages to which a plurality of separation membrane elements can be detachably connected,
A support for a membrane module, which can support a plurality of separation membrane elements by two heads.   The support for a membrane module according to claim 4, wherein a tie rod is passed through a through hole of the first head, and the first head can slide the tie rod in the axial direction by a desired length in the through hole. The support for a membrane module according to claim 4 or 5, wherein the first head has a water inlet pipe and a water outlet pipe connected to the water inlet path and the water outlet path on a non-connection surface with the separation membrane element.