JP2023151338A - Separation membrane module, manufacturing method of the same, and manufacturing method of concentrated liquid - Google Patents

Abstract

To provide a technology which enables improvement of concentration efficiency in manufacturing of a concentrated liquid by concentration of a processed liquid.SOLUTION: A separation membrane module (1) has: a container (2) in which a portion for storing at least a processed liquid (100) may be deformed; a separation membrane (3) housed in the container (2) in a state that one end of a through hole which is open at both ends is closed; and a communication part which is connected to the other end of the separation membrane (3) and allows the interior and the exterior of the container (2) to communicate with each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to a separation membrane module, a method for manufacturing the same, and a method for manufacturing a concentrated liquid.

A multi-tubular separation membrane module is known as a device for separating components in a liquid to be treated. A multi-tubular separation membrane module uses a porous support-zeolite membrane composite that includes a tubular porous support and a zeolite membrane to separate only specific components in the liquid to be treated that are outside the porous support-zeolite membrane composite. permeate through a porous support-zeolite membrane complex for separation. In batch processing using the multitubular separation membrane module, when the porous support-zeolite membrane composite is arranged vertically in parallel, the zeolite membrane is exposed as the separation of the liquid to be treated progresses; Separation efficiency may decrease. As a technique for solving this problem, a technique is known in which a porous support-zeolite membrane composite is disposed laterally in a liquid to be treated (for example, see Patent Document 1).

JP2016-073937A

However, in the technique described in Patent Document 1, as the liquid to be treated is concentrated, the volume of the gas phase in the container housing the porous support-zeolite membrane composite increases. Therefore, when the liquid level of the liquid to be treated decreases and the zeolite membrane is exposed, the area of the exposed portion of the zeolite membrane becomes large, and the reduction in separation efficiency becomes greater. Therefore, when the concentration ratio of the concentrated liquid is high, an excessive amount of the liquid to be processed may be required compared to the required production amount. Therefore, in the prior art, there is still room for consideration of improving productivity when the concentration ratio of the concentrated liquid is high.

An object of one aspect of the present invention is to provide a technique that can further improve concentration efficiency in producing a concentrated liquid by concentrating a liquid to be processed.

In order to solve the above problems, a separation membrane module according to one aspect of the present invention includes a container that can accommodate a liquid to be treated and at least a portion that accommodates the liquid to be treated is deformable, and one opening. a separation membrane that is housed in the container; and a communication portion that is connected to the opening and communicates between the hollow portion and the outside of the container.

In addition, in order to solve the above problems, a method for manufacturing a separation membrane module according to one aspect of the present invention includes a step of accommodating a liquid to be treated in a deformable container, and a step of accommodating a liquid to be treated in a deformable container; The method includes the steps of accommodating the separation membrane in the container in a state where the hollow portion can communicate with the outside of the container through a communication portion connected to the container, and closing an opening of the container.

Furthermore, in order to solve the above problems, a method for producing a concentrated liquid according to one aspect of the present invention includes a method for producing a concentrated liquid in which a component with relatively high permeability is separated from a liquid to be treated containing a plurality of components using a separation membrane. A method for producing a liquid, wherein the liquid to be treated contains a target component to be concentrated, and the hollow part of a separation membrane housed in a container is connected to one opening of the hollow part. The pressure is reduced through a communication part that communicates with the outside of the container, and the liquid to be treated is removed from the liquid contained in the container, which has relatively high permeability among the plurality of components contained in the liquid to be treated separating the components into the hollow portion, and deforming at least a portion of the container that accommodates the liquid to be treated so that the liquid level in the container is positioned above the other end of the separation membrane. process.

According to one aspect of the present invention, it is possible to provide a technique that can further improve the concentration efficiency in producing a concentrated liquid by concentrating a liquid to be processed.

FIG. 1 is a front view schematically showing the configuration of a separation membrane module according to an embodiment of the present invention. 1 is a side view schematically showing the configuration of a separation membrane module according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing the configuration of a separation membrane and a branch head that constitutes a communication section in an embodiment of the present invention. FIG. 2 is a diagram schematically showing the configuration of a bulkhead union that constitutes a communication section in an embodiment of the present invention. FIG. 2 is a diagram for explaining an example of a method for manufacturing a separation membrane module according to an embodiment of the present invention. FIG. 2 is a diagram for explaining an example of a method for producing a concentrated liquid according to an embodiment of the present invention. 1 is a diagram schematically showing an example of a configuration for controlling pressure reduction in a method for producing a concentrated liquid according to an embodiment of the present invention. FIG. 3 is a front view schematically showing the configuration of a first example of a separation membrane module according to another embodiment of the present invention. FIG. 3 is a front view schematically showing the configuration of a second example of a separation membrane module according to another embodiment of the present invention.

[Separation membrane module]
An embodiment of the present invention will be described below. FIG. 1 is a front view schematically showing the configuration of a separation membrane module according to an embodiment of the present invention, and FIG. 2 is a side view schematically showing the configuration of a separation membrane module according to an embodiment of the present invention. It is a diagram. As shown in FIGS. 1 and 2, the separation membrane module 1 includes a container 2, a separation membrane 3, a branch head 4, a bulkhead union 5, and a pedestal 6. A pressure tube 7 is connected to the bulkhead union 5. The pressure tube 7 is connected to a vacuum pump such as a diaphragm pump, for example, via a cooling trap (not shown). In this way, the separation membrane module 1 is installed so that the pressure inside the separation membrane 3 can be reduced.

[container]
The container 2 can contain the liquid to be treated, and at least the portion that accommodates the liquid to be treated can be deformed. FIG. 1 shows a state in which the liquid to be treated 100 is actually contained in the container 2. As shown in FIG.

The shape and material of the container 2 can be appropriately determined as long as the portion that accommodates the liquid to be treated is deformable. For example, the entire container 2 may be deformable. Alternatively, the container 2 may be a container in which only the portion that accommodates the liquid to be treated is deformable, and other portions such as the gas phase portion located above the portion are not deformable. Therefore, the material of the container 2 may be a flexible or pliable material such as a resin sheet, a resin film, a metal foil laminated resin sheet, a resin molded product, a metal plate, a glass molded product, or a wood. It may also contain non-deformable materials in place, such as cork, paper or ceramics. Further, the material of the container 2 may be a material that is an appropriate combination of resin films and paper, such as a paper pack that has a laminated structure. The container 2 is made of a flexible or inflexible material, and may be mechanically deformable, such as a structure that can be folded like an accordion or a drop-lid structure in which the lid slides following the liquid level. It may also be a container whose internal volume changes.

In this embodiment, the container 2 is, for example, a bag-shaped container made of resin. The container 2 includes two rectangular resin films 21, 21 and a seal portion 22 formed at the edges thereof. The container 2 is produced by heat-sealing each side of two rectangular resin films 21 or by heat-sealing the ends of a cylindrical resin film 21 in the width direction. Such a container 2 is preferable because it is easy to deform, the capacity can be arbitrarily set, and it is easy to manufacture. In particular, when such a container is used, it can easily be used to produce a small amount of concentrated liquid.

It is preferable that the container 2 is sealable from the viewpoint that the dimensions of the container 2 can be easily adjusted to match the contents contained therein. Such a container 2 is formed so that it has a sufficiently large volume when storing the liquid to be processed, and a volume suitable for the amount of the concentrated liquid when storing the concentrated liquid after concentration. It is possible to do so. Examples of materials for the sealable container 2 include films or sheets of resin such as thermoplastic resin, and metal foil laminated resin sheets composed of metal foil and resin layers, such as aluminum laminate sheets. It will be done. A metal foil laminated resin sheet is suitable from the viewpoint of the light-shielding property of the container and the viewpoint of reducing air permeability.

Further, the oxygen permeability of the container 2 is preferably low from the viewpoint of preventing oxidation of a concentrated liquid obtained by concentrating the liquid to be treated. Further, the container 2 preferably has antibacterial properties from the viewpoint of preventing biodegradation of the concentrate. From the above point of view, the material for the container 2 is, for example, "BONABONA" (registered trademark) antibacterial roll bag EX-3024-00 (width 260 mm, operating temperature -40 ℃~120℃) can be adopted.

This antibacterial roll bag is a cylindrical resin sheet with a width of 260 mm, and by heat-sealing it in the width direction to form a bottom, it can be used as a bag of a desired length. A hole for a bulkhead union, which will be described later, can be formed by drilling a hole of an appropriate size at a desired position. Here, if the strength of the bag is low, when a hole is made in the bag, the bag may be damaged and the sealability may be deteriorated. For this reason, it is recommended to attach a protective film such as fluororesin-impregnated tape to one side of the bag in advance so that the area is wider than the hole to be made, and then punch a hole through the protective film and the bag. This is preferable from the viewpoint of preventing damage. Furthermore, if the upper part of the container 2 is to be closed during concentration, the upper part of the container 2 should be heated in the width direction after the separation membrane 3, branch head 4, bulkhead union 5, and liquid to be treated are accommodated and installed in the container 2. Just seal it up.

When the liquid to be treated is food, drink, fragrance, etc., a bag-shaped container is preferable from the viewpoint of easy handling of a relatively small amount. Moreover, since it is suitable not to come into contact with air, a hermetic container is preferable, and a vacuum-packed resin bag is more preferable. Furthermore, in order to prevent changes in components due to sunlight, a light-shielding container such as an aluminum laminate bag or an aluminum vapor-deposited film bag is preferable.

[Separation membrane]
Separation membrane 3 is housed in container 2. Separation membrane 3 has a hollow portion with one opening. The hollow portion is a space at least partially surrounded by a separation membrane, and has one opening. The hollow portion and the opening become a flow path for the components separated from the liquid to be treated via the separation membrane. The shape of the separation membrane may be tubular, honeycomb, or monolithic, and by closing one end of a member having such a columnar space (through hole) with another suitable member, the above-mentioned hollow space can be closed. part is formed. In the case of closing the through-hole, the shape of the separation membrane 3 before closing is preferably tubular because it is easy to close the through-hole, and in the separation membrane 3 shown in this embodiment, the shape is tubular. . The separation membrane may include a support in any one of tubular, honeycomb, and monolith shapes, and a membrane to be subjected to separation formed on the support.

When the separation membrane 3 is tubular, the closing method may include attaching a metal jig to one end of the tubular membrane. When the separation membrane 3 is provided on a tubular porous substrate, a metal jig may be attached to one end of the tubular porous substrate. Alternatively, one end of the tubular porous substrate may be further closed with the same material as the porous substrate, and then the separation membrane 3 may be provided including the one end portion.

FIG. 3 is a diagram schematically showing the configuration of a separation membrane and a branch head that constitutes a communication section in an embodiment of the present invention. The separation membrane 3 includes a tubular porous body (porous tube) and a zeolite membrane supported on its outer peripheral surface. An end pin 31 that fits into a through hole communicating from one end of the porous tube to the other end is fitted into one end of the porous tube. Thereby, the space inside the porous tube becomes a hollow portion having one opening.

A resin heat-shrinkable tube is fitted from the outside to the boundary between the separation membrane 3 and the end pin 31, and the end pin 31 is attached to one end of the separation membrane 3 by heat-shrinking the heat-shrinkable tube by heating. Fixed.

A metal connecting pipe 32 is arranged at the other end of the separation membrane 3. The distal end of the connecting tube 32 is tapered one step, and the separation membrane 3 is connected to the branch head 4 via the connecting tube 32. The connecting pipe 32 has a conduit that closes one opening of the hollow part of the separation membrane 3 and communicates with the hollow part. Similar to the end pin 31, the connecting tube 32 has a resin heat-shrinkable tube fitted from the outside at the boundary with the separation membrane 3, and is fixed to the separation membrane 3 by heat-shrinking the heat-shrinkable tube by heating. ing.

Note that grease is interposed between the heat-shrinkable tube and the separation membrane 3 to improve airtightness. Furthermore, the end pin 31 and the connecting tube 32 may be fixed with something other than a heat shrink tube at the boundary with the separation membrane 3 to maintain liquid tightness.

The separation membrane 3 can be a known material depending on the purpose of concentrating the liquid to be processed, such as dehydration concentration of an alcohol aqueous solution or concentration by desolvation of a perfume solution, and can be manufactured by a known technique. be.

Examples of membranes used for separation in the separation membrane 3 include molecular sieve membranes. Such a molecular sieve membrane may be formed on the outer circumferential surface and/or the inner circumferential surface of the porous tube. The form of the molecular sieve membrane is not limited as long as it can appropriately exhibit its molecular sieving ability.

The molecular sieve membrane is preferably any one of a zeolite membrane, a silica membrane, and a carbon membrane, or a combination thereof. Among them, a zeolite membrane or a silica membrane is preferable, and a zeolite membrane is particularly preferable from the viewpoint of separation performance, water resistance, and durability. preferable.

Here, when a zeolite membrane is used as the molecular sieve membrane, the zeolite is preferably an aluminosilicate, but may further contain various elements as long as the desired performance of the membrane can be obtained. For example, zeolites may contain metal elements such as Ga, Fe, B, Ti, Zr, Sn or Zn instead of Al; It may contain elements such as.

Further, as another aspect of the present application, the main zeolite skeleton constituting the zeolite membrane preferably includes a zeolite having a pore structure with 12 or less oxygen rings and 6 or more oxygen rings, and preferably contains 12 or less oxygen rings. , it is more preferable to include a zeolite having a pore structure of 8-membered rings or more.
Regarding the pore structure, the preferred structure differs depending on the substance to be separated. For example, in the case where ethanol molecules are the substance to be separated, the main zeolite skeleton constituting the zeolite membrane preferably contains a zeolite having a pore structure of 12-membered oxygen rings or less and 10-membered oxygen rings or more; When is a water molecule, it is preferable to include a zeolite having a pore structure of 8-membered oxygen rings or less, more preferably a zeolite having a pore structure of 6-8 membered oxygen rings or less, It is more preferable to include a zeolite having a pore structure of membered rings.

Examples of zeolites having a pore structure with 12-membered oxygen rings or less and 10-membered oxygen rings or more include AEL, AFI, ATO, BEA, CON, EUO, FAU, FER, GME, HEU, LTL, MEL, MFI, MOR. , MTW, MWW, NES, OFF, STI, STT, TON and WEI. A more preferred structure is BEA, EUO, FER, FAU, MOR, MEL, MFI, MTW, MWW or NES, an even more preferred structure is BEA, FAU, MOR, MEL or MFI, and a most preferred structure is MFI. be. Among these structures, those with high hydrophobicity have excellent performance in selectively permeating organic substances such as dealcoholization, and are preferable from the viewpoint of excellent water resistance, heat resistance, and acid resistance, so they contain almost no aluminum. , so-called silicalites are particularly preferred. Silicalite is generally of the MFI type.

Examples of zeolites with pore structures of 6 to 8 membered oxygen rings or less include AEI, AFG, AFX, ANA, BRE, CAS, CDO, CHA, DDR, DOH, EAB, EPI, ERI, ESV, FAR, FRA. , GIS, GIU, GOO, ITE, KFI, LEV, LIO, LOS, LTA, LTN, MAR, MEP, MER, MON, MSO, MTF, MTN, MWF, NON, PAU, PHI, RHO, RTE, RTH, RUT , SGT, SOD, TOL, TSC, UFI, VNI and YUG.

Among these, examples of zeolites having a 6- to 8-membered oxygen ring structure include AEI, AFG, AFX, ANA, CHA, EAB, ERI, ESV, FAR, FRA, GIS, ITE, KFI, LEV, LIO, LOS, Includes LTA, LTN, MAR, MWF, PAU, RHO, RTH, SOD, TOL and UFI.

In addition, the value of n of a zeolite having an oxygen n-membered ring is the largest value of the number of oxygen atoms in the pores composed of the zeolite skeleton and the T element (an element other than oxygen that constitutes the skeleton). .

When synthesizing a zeolite membrane as a molecular sieve membrane, an organic template (structure directing agent) can be used as necessary. The template is usually not particularly limited as long as it is a template that can create the desired zeolite structure, and it is not necessary to use a template if a zeolite membrane can be synthesized without a template.

When using a silica membrane as the molecular sieve membrane, the silica content in the silica membrane may be determined as appropriate depending on the composition of the liquid to be treated, the components to be separated, and the like. For example, in the silicon oxide composition in a silica film, the ratio of silicon to all positive elements including silicon is usually 50 mol% or more.

A silica membrane is formed on an inorganic porous substrate such as an inorganic porous tube by a sol-gel method, a CVD method, a polymer precursor method, or the like. In the sol-gel method, a silica membrane can be formed by reacting a metal alkoxide with water on an inorganic porous substrate to form a gel through hydrolysis and dehydration condensation. In addition, in the counter-diffusion CVD method, for example, when the inorganic porous substrate is a porous tubular substrate, oxygen is passed inside and a silica source is passed outside to form an amorphous silica layer within the pores of the substrate. A silica film can be formed by vapor deposition. In addition, in the polymer precursor method, a silica film can be formed by coating an inorganic porous substrate with a silica precursor such as alkoxysilane or polysilazane, and then performing heat treatment.

When using a carbon membrane as the molecular sieve membrane, a carbon membrane precursor solution is dip-coated onto a porous substrate, heat-treated at about 600 to 800°C, and dried to form a carbon membrane. Examples of the carbon membrane precursor include aromatic polyimide, polypyrrolone, polyfurfuryl alcohol, polyvinylidene chloride, phenolic resin, lignin derivative, wood tar, and bamboo tar. Further, as the solvent, organic solvents such as tetrahydrofuran, acetone, methanol, ethanol, and N-methylpyrrolidone can be suitably used.

The thickness of the molecular sieve membrane is not particularly limited, but for zeolite membranes, the lower limit of the thickness is usually 0.01 μm or more. The upper limit of the thickness of the zeolite membrane is preferably 30 μm or less, more preferably 10 μm or less. The silica film may be a film consisting of a single layer or a film consisting of two or more layers, and its thickness is preferably 1 nm or more. Moreover, the thickness of the silica film is preferably 10 μm or less, more preferably 1 μm or less. The thickness of the carbon film is preferably 0.05 μm or more, more preferably 0.1 μm or less. The upper limit of the thickness of the carbon film is preferably 5 mm or less, more preferably 500 μm or less, but the thickness of the carbon film is preferably as thin as possible within a range where the desired film performance can be obtained.

The method of forming a molecular sieve membrane on the surface of a porous substrate is not limited to the method described above. For example, (1) a method of fixing a substance capable of forming a molecular sieve membrane onto the surface of a porous substrate using a binder, or (2) a method of impregnating a porous substrate in a slurry or solution in which a substance capable of forming a molecular sieve membrane is dispersed. and (3) a method of crystallizing a substance capable of forming a molecular sieve membrane (in particular, zeolite) into a membrane on the surface of the porous substrate. (For example, see International Publication No. 2013/125660).

Regarding the forms in which the porous tube has a molecular sieve membrane, there are two types: one in which the molecular sieve membrane is formed only on the outer peripheral surface of the porous tube, one in which the molecular sieve membrane is formed only on the inner peripheral surface of the porous tube, and one in which the molecular sieve membrane is formed only on the inner peripheral surface of the porous tube. The molecular sieve membrane may be formed on both the outer circumferential surface and the inner circumferential surface. Usually, it is desirable that a molecular sieve film be formed on the outer circumferential surface of the porous tube from the viewpoint that the coating material covering the inner circumferential surface of the porous tube has an inward shrinking force.

Further, the membrane used for separation in the separation membrane 3 may be a polymer membrane or a mixed membrane of an inorganic material and a polymer (organic-inorganic hybrid membrane). Examples of polymeric materials for polymer membranes include modified polyether sulfones, cellulose esters (e.g. cellulose acetate), polyamides (e.g. aromatic polyamides), polyesters, polyimides, vinyl polymers, polyether sulfones, ethylene-vinyl alcohol copolymers. , silicone resins, polyolefin resins, polyvinyl fluoride and polyvinylidene fluoride.

The organic-inorganic hybrid film is composed of a resin matrix and an inorganic filler dispersed and embedded in the resin matrix. Examples of matrix materials include the resins listed above, and examples of inorganic filler materials include zeolites such as high-silica zeolite.

[Branch head and bulkhead union]
As shown in FIG. 3, the branch head 4 includes a proximal end connection portion 41 connected to the bulkhead union 5, a main pipe portion 42 connected to the proximal end connection portion 41, and four branches branching from the main pipe portion 42. It has a main branch pipe part 43 and a tip connecting part 44 connected to the tip of each branch pipe part 43. The distal end of the branch pipe section 43 is also tapered one step similar to the distal end of the connecting pipe 32 of the separation membrane 3. Then, the separation membrane 3 is connected to the branch head 4 by fitting the tip connection part 44 onto the branch pipe part 43 and the connection pipe 32 of the separation membrane 3, respectively. The tip connecting portion 44 may be a tube made of resin, and examples of the resin material of the tube include silicone rubber, fluororubber, and vinyl chloride resin.

The material for the branch head 4 may be any material as long as it can connect the separation membrane 3, hold the separation membrane 3 within the container 2, and exhibit strength enough to withstand the reduced pressure inside the separation membrane 3 during concentration. Further, since the branching head 4 may come into contact with the liquid to be treated, it is preferable that the branching head 4 is made of a chemically stable material. The material of the branching head 4 is preferably resin for the above reasons, but it does not have to be resin. Examples of materials for the branching head 4 include polypropylene (PP), polyethylene (PE), polystyrene (PS), acrylic resin, vinyl chloride resin, fluororesin, and stainless steel.

FIG. 4 is a diagram schematically showing the configuration of a bulkhead union that constitutes a communication section in an embodiment of the present invention. FIG. 4 shows a state in which the bulkhead union 5 is fixed to the container 2. The bulkhead union 5 is made of metal, and as shown in FIG. It has a connecting part 52 and two nuts 53a and 53b that are screwed into threads formed on the outer peripheral surface of the connecting pipe part 51.

The bulkhead union 5 is inserted from the inside of the container 2 into a pre-formed hole in the protective film 21a attached to the container 2 via an O-ring (not shown) with the nut 53b on the tip side removed. Then, the connecting tube portion 51 is inserted, and the nut 53b is screwed onto the connecting tube portion 51 from the outside of the container 2. In this way, the bulkhead union 5 is fixed to the container 2 by sandwiching the resin film 21 of the container 2 together with the protective film 21a between the nuts 53a and 53b via the O-ring. Inside the container 2, the head connection 52 of the bulkhead union 5 is connected to the proximal connection 41 of the branch head 4.

The dimensions of the hole in the container 2 can be appropriately determined depending on the outer diameter of the connecting pipe portion 51 of the bulkhead union 5. For example, if the outer diameter of the connecting pipe portion 51 is 6 mm in A designation and 1/4 (10.5 mm) in B designation, the diameter of the hole may be 11 mm. The material of the bulkhead union 5 only needs to be physically and chemically stable under the environment of concentration of the liquid to be treated, and examples thereof include fluororesin and stainless steel.

In this way, the branch head 4 and the bulkhead union 5 are connected to the opening of the separation membrane 3 and constitute a communication section that communicates the hollow part of the separation membrane 3 with the outside of the container 2. This communication section includes a branch head 4, that is, a branch pipe structure connectable to each of the plurality of separation membranes 3. Further, in this communication section, the bulkhead union 5 is attached to the container 2 and serves as a connecting section capable of connecting the pipe structures inside and outside the container 2.

In addition, a hole is formed in the container 2 at a portion of the resin film 21 to which the protective film 21a is attached. This prevents the resin film 21 from breaking when forming the holes. Further, since the hole is bordered by the protective film 21a, breakage of the resin film due to the weight of the bulkhead union 5 is prevented.

[Frame]
The pedestal 6 includes a substrate 61 having a rectangular shape when viewed from above, a support frame 62 standing up from one edge of the substrate 61, and a push plate 63 fixed to the substrate 61 facing the support frame 62. There is. Both are made of aluminum. The push plate 63 is attached to the substrate 61 so as to be movably fixed to the support frame 62 at an arbitrary interval. For example, the substrate 61 has a groove along the opposing direction of the support frame 62 and the push plate 63, and the push plate 63 has a bolt inserted into the groove. The push plate 63 is movably fixed at an arbitrary position relative to the support frame 62 by tightening the bolt from above and pressing the bottom of the groove with the tip of the bolt extending into the groove.

The support frame 62 has an abutment member made of acrylic resin (not shown) between it and the container 2, and the push plate 63 has an abutment plate made of acrylic resin (not shown) between it and the container 2. have. The abutting member has a back plate portion that contacts the support frame 62 and side plate portions that stand up from both sides of the back plate portion toward the push plate 63, and is formed in a shape that surrounds the container 2 from three sides. The contact plate is a plate-shaped member that contacts the push plate 63. The container 2 is supported so as to stand upright while being sandwiched at a specific interval by directly contacting the back plate of the contact member on the support frame 62 side and the contact plate on the push plate 62 side.

In this way, the separation membrane module 1 further includes a pair of support parts that support the container 2 on both sides. This support part is configured such that a push plate 63, which is one part of the support part, can press at least a part of the supported container 2 that accommodates the liquid to be processed 100 toward a support frame 62, which is the other part of the support part. There is.

[Method for manufacturing separation membrane module]
The separation membrane module 1 can be manufactured, for example, as follows. FIG. 5 is a diagram for explaining an example of a method for manufacturing the separation membrane module 1.

First, the liquid to be treated 100 is placed in the container 2 . A bulkhead union 5 is installed in the container 2.

Next, the separation membrane 3 connected to the branch head 4 is housed in the container 2. The separation membrane 3 is connected to the branch head 4 by fitting the connecting tube 32 fixed to the separation membrane 3 into the tip connection portion 44 of the branch head 4 as described above. The branch head 4 is then connected to the bulkhead union 5. In this way, the separation membrane 3 is placed inside the container 2 in a state where the hollow portion of the separation membrane 3 can communicate with the outside of the container 2 by the branch head 4 and the bulkhead union 5 connected to one opening of the hollow portion of the separation membrane 3. be accommodated in.

Note that the accommodation of the liquid to be treated 100 in the container 2, the fixing of the bulkhead union 5 to the container 2, the accommodation of the separation membrane 3 in the container 2, and the connection of the branch head 4 to the bulkhead union 5 are as follows: The steps may be performed in this order or may be performed in a different order.

Then, the opening of the container 2 is closed. The opening of the container 2 can be closed by heat sealing. This heat sealing can be performed using a commercially available heat sealing device. For example, examples of heat sealing devices that can be used to heat seal the antibacterial roll bags mentioned above include the vacuum packer "Sutaro" AS-V-001 manufactured by Asahi Sangyo Co., Ltd. (seal width 4 mm, seal effective dimension 275 mm, AC100V, 150W) is included.

Then, the container 2 is set on the pedestal 6. The position of the push plate 63 is adjusted so that the level of the liquid to be treated 100 is above the upper end of the zeolite membrane of the separation membrane 3, for example, at the center of the connecting tube 32 in the height direction.

[Method for producing concentrated liquid]
A concentrated liquid obtained by processing a liquid to be treated can be produced by using the separation membrane module 1, for example, in the following manner. FIG. 6 is a diagram for explaining an example of a method for producing a concentrate according to an embodiment of the present invention.

First, in preparation for producing a concentrated liquid, the pressure tube 7 is connected to the bulkhead union 5 of the separation membrane module 1. The distance between the support frame 62 and the push plate 63 in the pedestal 6 is adjusted in advance, and the liquid level of the liquid to be treated 100 in the container 2 is set at a position where the entire separation membrane 3 is immersed in the liquid to be treated, for example. This is the position of the connecting pipe 32 (for example, the position indicated by the broken line in the left diagram of FIG. 6). The distance between the support frame 62 and the push plate 63 at this time is defined as D1.

In this manner, in the separation membrane module 1, by advancing and retracting the push plate 63 of the pedestal 6 with respect to the support frame 62, it is possible to change the thickness of the portion of the container 2 that accommodates the liquid to be treated 100. can. For example, when four separation membranes 3 each having a length of 40 cm are used, the liquid level can be adjusted to the above position even if the volume of the liquid to be treated 100 in the container 2 changes from 400 mL to 4000 mL. .

Next, the hollow part of the separation membrane 3 housed in the container 2 is depressurized, and the plurality of components contained in the liquid to be treated 100 are separated from the liquid to be treated 100 housed in the vessel 2. , a component with a relatively high permeation rate (for example, water in an aqueous alcohol solution when the membrane has a higher permeation rate of water than that of alcohol) is separated. The pressure inside the separation membrane 3 is reduced by operating a vacuum pump connected to a pressure tube 7 via a branch head 4 and a bulkhead union 5 that communicate the hollow part of the separation membrane 3 with the outside of the container 2. Ru.

By separating from the liquid to be treated 100 a component with a relatively high permeation rate among the plurality of components contained in the liquid to be treated 100, Target components with low permeation rates are concentrated. Therefore, as shown by the solid line in the left diagram of FIG. 6, the level of the liquid to be treated 100 in the container 2 is lowered. Therefore, at least the portion of the container 2 that accommodates the liquid to be treated 100 is deformed to position the liquid level in the container 2 at a position above the upper end of the separation membrane, that is, at the position of the connecting pipe 32. The position of the liquid level in the container 2 is adjusted by the position of the push plate 63 on the pedestal 6.

That is, loosen the bolts that fix the push plate 63, slide the push plate 63 so that the distance between the support frame 62 and the push plate 63 is D2, which is shorter than the initial distance D1, and tighten the bolt at that position. . In this way, the push plate 63 approaches the support frame 62, and the container 2 is further pushed. As a result, the position of the liquid level of the liquid to be treated 100 in the container 2 is adjusted from the position shown by the broken line in the right diagram of FIG. 6 to the position shown by the solid line, that is, the initial liquid level position.

At this time, it is preferable to provide an appropriate gap between the resin film 21 of the container 2 and the separation membrane 3 from the viewpoint of efficient concentration. From this point of view, the minimum thickness of the container 2 (the minimum distance between the support frame 62 and the push plate 63) may be set to the outer diameter of the separation membrane 3 + 2 mm.

In this way, components with relatively high permeability in the liquid to be treated 100 are discharged from the liquid to be treated 100 by membrane filtration of the zeolite membrane, and target components other than the relevant components are concentrated from the liquid to be treated 100. A liquid is produced. Concentration of the liquid to be treated 100 using the separation membrane module 1 is carried out as described above while the liquid level of the liquid to be treated 100 is maintained at a higher position than the zeolite membrane of the separation membrane.

Therefore, manufacturing a concentrated liquid using the separation membrane module 1 is advantageous when a high concentration rate is required compared to conventional membrane separation techniques. Examples of liquids to be processed that are applied to such high concentration ratio concentration include liquids containing foods as target components and liquids containing fragrances as target components. For example, the production of the above concentrated liquid is suitable for concentrating the concentration of the target component of the liquid to be treated to 1.1 times or more, for example, concentrating a 90% ethanol aqueous solution to a 99% ethanol aqueous solution. It is more suitable for concentrating 2 times or more. This range is preferable from the viewpoint of realizing concentration of components for the purpose of improving the flavor of foods. More preferably, the concentration is 5 times or more concentrated. Within this range, it is possible to achieve concentration of fragrance components such that a difference is detected in sensory evaluation. If the concentration is concentrated 10 times or more, it is possible to concentrate the perfume component so that the difference in sensory evaluation becomes clearer, and this is even more preferable.

After concentration, the upper part of the container 2 is cut to open the container 2, and the branch head 4 and the separation membrane 3 connected thereto are taken out from the container 2 through the bulkhead union 5. Then, loosen and remove the nut 53b and remove the bulkhead union 5 from the container 2. Furthermore, the resin film 21 of the container 2 is bonded by heat sealing at a position below the hole through which the connecting pipe portion 51 of the bulkhead union 5 was inserted. In this way, the opening of the container 2 containing the concentrated liquid is sealed again. The concentrate produced in the container 2 can be shipped together with the sealed container 2 without being removed from the container 2.

Further, the pressure reduction in the method for producing a concentrated liquid may be performed with reference to the pressure detection result using a pressure gauge. FIG. 7 is a diagram schematically showing an example of a configuration for controlling pressure reduction in a method for producing a concentrated liquid according to an embodiment of the present invention.

As shown in FIG. 7, a vacuum pump 71 is connected to the pressure tube 7 connected to the bulkhead union 5. Two branch pipes are branched from the pressure tube 7 between the bulkhead union 5 and the vacuum pump 71. A pressure gauge 72 is connected to one branch pipe, and the other branch pipe is configured to be openable and closable by a solenoid valve 73. Further, a cold trap 74 is interposed between the pressure gauge 72 and the electromagnetic valve 73 in the vacuum line formed by the pressure-resistant tube 7.

The vacuum pump 71 evacuates the space from the pressure tube 7 to the hollow part of the separation membrane 3 to reduce the pressure in the space. The pressure gauge 72 detects the degree of vacuum in the space. The electromagnetic valve 73 intermittently opens and closes in accordance with the detected value of the pressure gauge 72 to introduce air into the space and adjust the degree of vacuum in the space.

The degree of vacuum may be appropriately set depending on the type of component with relatively high permeability that passes through the separation membrane or the operating conditions in concentration using the separation membrane module. For example, in a concentration operation in which components other than the target are permeated through a separation membrane, a low degree of vacuum is preferable from the viewpoint of productivity because it is possible to create a large vapor pressure difference between the outside and inside of the separation membrane for the components to be permeated. From this point of view, the degree of vacuum is usually 10 kPa or less in terms of absolute pressure, preferably 1 kPa or less, and more preferably 100 Pa or less.

To end the concentration operation, the solenoid valve 73 is opened, the vacuum pump 71 is stopped, and air is introduced from the solenoid valve 73 into the space inside the separation membrane.

[Main effects of this embodiment]
In the separation membrane module 1, a container 2 is deformable to accommodate a liquid to be treated, and a separation membrane 3 having a zeolite membrane and housed in the container 2 communicates with the outside of the container 2 via a communication portion. Therefore, even if the amount of the liquid to be treated decreases as the target component in the liquid to be treated decreases as the target component in the liquid to be treated is concentrated, the volume of the portion of the container 2 that accommodates the liquid to be treated can be reduced in accordance with the amount of the liquid to be treated. It is possible. Therefore, it is possible to control the level of the liquid to be treated in the container 2 so that the zeolite membrane of the separation membrane 3 is always immersed in the liquid to be treated.

Therefore, when producing a concentrated liquid using the separation membrane module 1, the separation membrane 3 is prevented from being exposed above the liquid level of the concentrated liquid in the container 2. In this way, according to the separation membrane module 1, in concentrating the liquid to be treated, the area of the separation membrane exposed from the liquid to be treated can be reduced and the concentration efficiency can be increased. Note that the concentration efficiency means the rate of concentration. Therefore, it is possible to produce a concentrated solution with at least an efficient amount of the liquid to be processed, which is advantageous for improving productivity when producing a large variety of concentrated solutions in small quantities or when the concentration ratio is high. Furthermore, in the production of the concentrate, if the initial capacity of the container 2 is the same, it is possible to make the concentration ratio of the concentrate much higher than in conventional concentration techniques.

Further, in the separation membrane module 1, the liquid to be treated is concentrated with the container 2 sealed. Membrane filtration using a zeolite membrane can be carried out at low temperatures and can accelerate the discharge of liquid components from the liquid to be treated. In addition, since the liquid to be treated can be concentrated while the container 2 is sealed, appropriately selecting the material for the container 2 is suitable for suppressing the loss of target components such as aroma components. Therefore, replacing the gas in the gas phase of the container 2 with an inert gas such as nitrogen gas is suitable for suppressing deterioration of the target component.

In addition, the separation membrane module 1 can accommodate a plurality of separation membranes 3 in the container 2 by employing the branch head 4, and the container 2 can be deformed as described above. Therefore, it is possible to increase the S/V (separation membrane area/liquid volume) ratio of the separation membrane module 1.

In general, sensory evaluation of aroma components is effective based on changes in the logarithmic level of the concentration of the aroma component. For this reason, when performing dehydration and concentration of fragrances, a concentration ratio of several to several tens of times may be required. When the concentration ratio is high as described above, in normal immersion dehydration using a zeolite membrane, the zeolite membrane is exposed when the liquid level decreases. Therefore, the water flux gradually decreases and dehydration (concentration) becomes impossible. In the production of a concentrated liquid using the separation membrane module 1, it is possible to prevent the separation membrane from being exposed during concentration, so that a decrease in water flux is prevented even when the concentration ratio is high.

In addition, in the separation membrane module 1, a resin bag (including an aluminum laminate pack or an aluminum vapor-deposited film bag) can be used as the container 2, and the container 2 can be used as a container for storing the product after concentration, and can also be used as a disposable container. Available as a pack. Therefore, it can be suitably used in the production of products such as foods or fragrances that require biodegradation of the concentrate and prevention of contamination.

[Other embodiments]
Other embodiments of the invention will be described below. For convenience of explanation, members having the same functions as those described in the previous embodiment will be denoted by the same reference numerals, and the description thereof will not be repeated.

[First example]
FIG. 8 is a front view schematically showing the configuration of a first example of a separation membrane module according to another embodiment of the present invention. As shown in FIG. 8, the separation membrane module 70 includes a container 2, a separation membrane 3, a branch head 8, and a vent pipe 9. The branch head 8 has a connecting pipe 81 extending from the main pipe part 42 to the side opposite to the branch pipe part 43 in place of the proximal end connection part 41 of the branch head 4 described above. The ventilation pipe 9 is a pipe that communicates between the inside and outside of the container 2, and can be opened and closed with a removable lid.

In producing the concentrated liquid, first, an inert gas such as nitrogen gas is supplied to the container 2 through the vent pipe 9, and the gas phase portion of the container 2 is replaced with the inert gas. Next, the ventilation pipe 9 is sealed. The pressure tube 7 is connected to the connecting pipe 81, and the liquid to be treated 100 contained in the container 2 is concentrated. During concentration, the container 2 is pressed appropriately to maintain the liquid level at the position of the connecting pipe 32. When the concentration is completed, the container 2 is cut open at a position on the liquid surface side of the connecting pipe 81, the branch head 8 and the separation membrane 3 are taken out from the container 2, and the opening of the container 2 is sealed by heat sealing.

In this way, the separation membrane module 70 further includes the ventilation pipe 9 that communicates between the inside and outside of the container 2. Therefore, it becomes possible to concentrate the liquid to be treated in an inert gas atmosphere, which is suitable from the viewpoint of suppressing oxidation of the liquid to be treated and the concentrated liquid.

[Second example]
FIG. 9 is a front view schematically showing the configuration of a second example of a separation membrane module according to another embodiment of the present invention. As shown in FIG. 9, the separation membrane module 80 includes a container 90, a separation membrane 3, and a branch head 8. The container 90 is a deformable bag made of resin, and has two rows of wire fasteners 91 at the opening. The line fasteners 91 in each row extend in the width direction of the container 90 and are composed of grooves on one resin sheet side and protrusions on the other resin sheet side that fit into the grooves. In this way, the container 90 is configured to be repeatedly sealable without heat sealing.

The separation membrane module 80 is constructed by opening the wire fastener 91 of the container 90 and accommodating the branch head 8 and the separation membrane 3 connected thereto in the container 90. To manufacture the concentrated liquid, the liquid to be processed 100 contained in the container 90 is stored, the pressure tube 7 is connected to the branch head 8, and the liquid to be processed 100 contained in the container 2 is concentrated. During concentration, the container 2 is pressed appropriately to maintain the liquid level at the position of the connecting pipe 32. When the concentration is completed, the branch head 8 and the separation membrane 3 are taken out from the container 90, and if necessary, the container 90 is further pressed to push out the gas in the gas phase in the container 90 with the concentrated liquid, and in this state, the wire fastener 91 is closed. , seal the container 90.

[Further variations]
The pedestal may further include a biasing member such as a spring that biases the push plate toward the support frame. According to this configuration, the level of the liquid to be treated in the container is maintained at a higher position than the position of the zeolite membrane of the separation membrane by the biasing force of the biasing member with a specific strength. This configuration is suitable from the viewpoint of realizing the above-mentioned adjustment of the liquid level position with a simpler configuration and operation.

Further, in the pedestal, the push plate may be moved forward and backward toward the support frame using a vise mechanism. This configuration allows for easy fine adjustment of the distance between the support frame and the push plate, and is suitable from the viewpoint of more precisely controlling the liquid level of the liquid to be treated in the container.

The volume of the separation membrane module can be changed by pressing it against the plate attached to the stand, by sliding the lid like a drop lid, or by folding it like an accordion. The pressure inside the container may be negative, the outside of the container may be pressurized, or the volume of the container may be reduced. Further, suitable power for changing the volume is human power, electric drive, magnetic force, gravity, pneumatic pressure, heat, pressure, or steam.

The deformable portion of the container 2 only needs to be at the position of the zeolite membrane in the separation membrane 3 in the container 2 or below it, and the pedestal can only deform the container at such a position. It may be configured to be pressable.

The separation membrane module may further include a sensor that detects the level of the liquid to be treated in the container, and may have a configuration that controls the position of the push plate with respect to the support frame according to the detection result of the sensor. . This configuration is suitable from the viewpoint of further improving workability in producing the concentrated liquid and from the viewpoint of controlling the liquid level of the liquid to be treated in the container more precisely.

The separation membrane module may further include a supply pipe that supplies the liquid to be treated to the container. For example, in addition to the above-mentioned container, a container having another communication channel capable of being additionally filled with the liquid to be treated, such as a Tedlar bag cock, may be used. This configuration makes it possible to add a liquid to be treated, and the manufactured concentrate can be shipped while being housed in a container, so it is suitable from the viewpoint of producing concentrated liquid in larger quantities.

The container that can be opened and closed using the above-mentioned wire fastener or the like may be integrally provided with a bulkhead union whose tip can be opened and closed with a lid. For example, by heat-sealing the flange of a bulkhead union having a resin flange instead of a nut to a container, it is possible to form a container with an integrated bulkhead union. After the branch head and separation membrane are removed from the container after producing the concentrate, the bulkhead union can be used to replace the gas in the container's gas phase with an inert gas, similar to the vent pipe described above. is possible. Therefore, this configuration is suitable from the viewpoint of further preventing oxidation of the concentrated liquid.

The separation membrane module may further include a box that can accommodate a container and a pedestal, connect a vacuum tube to a branch head or bulkhead union, and replace the box with any gas. This configuration allows production of a concentrated liquid and subsequent sealing of the container in an atmosphere of an inert gas such as nitrogen gas. Therefore, this configuration is suitable from the viewpoint of further preventing oxidation of the concentrated liquid.

Separation membrane modules are equipped with a degassing valve to prevent the container from being damaged, the contents leaking, or outside air leaking in due to the generation of gas from the contents of the container or an increase in internal pressure due to temperature rise. The container may further include a valve (check valve). For such a deaeration valve, it is possible to use a valve that has a sheet-like valve body that is in close contact with the valve seat at all times and that forms a gap between the valve seat and the valve seat that communicates with the outside of the container only when the internal pressure increases. It is.

〔summary〕
As is clear from the above description, the separation membrane module (1) according to the embodiment of the present invention is a container ( 2), a separation membrane (3) having a hollow part with one opening and housed in a container; and a communication part connected to the opening and communicating between the hollow part and the outside of the container. , has.

In addition, the method for manufacturing a separation membrane module according to an embodiment of the present invention includes a step of accommodating a liquid to be treated in a deformable container, and a communication portion connected to one opening of the hollow portion of the separation membrane. The method includes the steps of accommodating the separation membrane in the container in a state where the part and the outside of the container can communicate with each other, and closing the opening of the container.

Furthermore, the method for producing a concentrated liquid according to an embodiment of the present invention is a method for producing a concentrated liquid in which a relatively highly permeable component is separated from a liquid to be treated containing a plurality of components using a separation membrane. The processing liquid contains the target component to be concentrated, and the inside of the hollow part of the separation membrane housed in the container is connected to one opening of the hollow part and communicates between the hollow part and the outside of the container. A step of separating a component with relatively high permeability from among a plurality of components contained in the liquid to be treated into the hollow part from the liquid to be treated contained in the container by reducing the pressure, and at least the liquid to be treated in the container deforming the part that accommodates the separation membrane to position the liquid level in the container at a position above the other end of the separation membrane.

Therefore, according to the above-mentioned aspect, the position of the liquid surface of the liquid to be treated during concentration is determined according to the position of the part of the separation membrane subjected to separation (for example, the zeolite membrane when the separation membrane has a zeolite membrane). It is possible to make appropriate adjustments. Therefore, according to the above-mentioned aspect, the concentration efficiency in producing a concentrated liquid by concentrating the liquid to be treated can be further increased compared to the conventional technique of concentrating the liquid to be treated in an undeformable container using a zeolite membrane. .

In the above embodiment, the separation membrane may include a porous tube and a zeolite membrane supported on the circumferential surface of the porous tube. This configuration is even more effective from the viewpoint of easily configuring the separation membrane.

In the above embodiment, the communication portion may include a branch pipe structure connectable to each of the plurality of separation membranes. This configuration is even more effective from the viewpoint of increasing the S/V ratio of the separation membrane module and increasing the efficiency of producing the concentrate.

In the above embodiment, the communication part may include a connecting part that is attached to the container and can connect the pipe structures inside and outside the container. This configuration is suitable for sealing the container 2 when concentrating the liquid to be treated, and is even more effective from the viewpoint of preventing loss due to volatilization and deterioration due to oxidation of the target component (concentrated liquid) in the liquid to be treated. be.

In the above embodiment, the container may be a bag-shaped container made of resin. This configuration is even more effective from the viewpoint of easily preparing a deformable container.

In the aforementioned embodiments, the container may be sealable. With this configuration, the container used for producing the concentrate can be easily used as a container for shipping the concentrate. Therefore, it is even more effective from the viewpoint of preventing contamination of the concentrated liquid by bacteria or foreign substances.

The separation membrane module is a pair of support parts that support a container on both sides, and one of the support parts can press at least a portion of the supported container that accommodates the liquid to be treated toward the other support part. It may further have a section. This configuration is even more effective from the viewpoint of easily or precisely adjusting the position of the liquid level when concentrating the liquid to be processed. Further, the separation membrane module can be used even if it is installed horizontally so that the separation membrane is approximately horizontal, or vertically so that the separation membrane is approximately vertical.

Moreover, the separation membrane module may further include a ventilation pipe that communicates between the inside and outside of the container. This configuration makes it possible to replace the gas in the gas phase in the container with an inert gas, and is therefore even more effective from the viewpoint of easily suppressing oxidation of the produced concentrated liquid.

In one aspect of the present invention, in separation using a separation membrane, the level of the liquid to be treated is set higher than the separation membrane so that the zeolite membrane is always in contact with the liquid to be treated regardless of the amount of the liquid to be treated. maintained in position. Therefore, in one aspect of the present invention, concentration efficiency can be maintained even when concentrated to a small amount, so there is no need to use an excess raw material liquid or use a separation membrane with an excessive area to obtain the desired amount. There's no need. Furthermore, in one embodiment of the present invention, no loss or denaturation occurs during the separation and concentration process of foods, flavors, and the like. Therefore, the present invention contributes to the spread and development of technology using separation membranes, from the viewpoint of contributing to improving the efficiency of raw materials or energy used excessively in the conventional manufacturing process of concentrated liquids, and contributes to industry and technological innovation. It is expected that this will contribute to the achievement of the Sustainable Development Goals (SDGs).

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention.

1, 70, 80 Separation membrane module 2, 90 Container 3 Separation membrane 4, 8 Branch head 5 Bulkhead union 6 Frame 7 Pressure-resistant tube 9 Vent pipe 21 Resin film 21a Protective film 22 Seal portion 31 End pin 32 Connection tube 41 Base end connection Part 42 Main pipe part 43 Branch pipe part 44 Tip connection part 51 Connection pipe part 52 Head connection part 53a, 53b Nut 61 Substrate 62 Support frame 63 Push plate 71 Vacuum pump 72 Pressure gauge 73 Solenoid valve 74 Cold trap 81 Connection pipe 91 Wire fastener 100 Liquid to be treated

Claims (10)

a container capable of accommodating a liquid to be treated and at least a portion accommodating the liquid to be treated is deformable;
a separation membrane having a hollow part having one opening and housed in the container;
a communication part connected to the opening and communicating between the hollow part and the outside of the container;
A separation membrane module with The separation membrane module according to claim 1, wherein the separation membrane includes a porous tube and a zeolite membrane supported on the peripheral surface of the porous tube. The separation membrane module according to claim 1 or 2, wherein the communication portion includes a branch pipe structure connectable to each of the plurality of separation membranes. The separation membrane module according to any one of claims 1 to 3, wherein the communicating part includes a connecting part that is attached to the container and can connect pipe structures inside and outside the container. The separation membrane module according to any one of claims 1 to 4, wherein the container is a bag-shaped container made of resin. The separation membrane module according to any one of claims 1 to 5, wherein the container is sealable. A pair of support parts that support the container on both sides, the support part being capable of pushing at least a portion of the supported container that accommodates the liquid to be treated toward the other of the support parts. The separation membrane module according to any one of claims 1 to 6, further comprising: The separation membrane module according to any one of claims 1 to 7, further comprising a ventilation pipe that communicates between the inside and outside of the container. accommodating the liquid to be treated in a deformable container;
accommodating the separation membrane in the container in a state where the hollow portion and the outside of the container can communicate through a communication portion connected to one opening of the hollow portion of the separation membrane;
and closing the opening of the container.
A method for manufacturing a separation membrane module. A method for producing a concentrated liquid in which a relatively highly permeable component is separated from a liquid to be treated containing multiple components using a separation membrane, the method comprising:
The liquid to be treated contains a target component to be concentrated,
The inside of the hollow part of the separation membrane housed in the container is depressurized through a communication part that is connected to one opening of the hollow part and communicates between the hollow part and the outside of the container. separating a component with relatively high permeability from among the plurality of components contained in the liquid to be treated from the contained liquid to be treated into the hollow part;
deforming at least a portion of the container that accommodates the liquid to be treated so that the liquid level in the container is positioned above the other end of the separation membrane;
A method for producing a concentrated liquid, including:

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