JP2015009189A - Membrane module, and membrane unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a membrane module capable of retaining the durability and chemical resistance of a connection part between a filter member and a filtrate water collecting member, and monitoring the degradation of the filter member in a spared space.SOLUTION: Film modules 1a and 1b contain the connection part between one end of a filter member 2 and a filtrate water collecting member 3 for introducing the solid-liquid separation water from the one end, and covering-molds the filtrate water collecting member 3 by a molding part 41 of a covering material 4. The molding part 41 has an exposed part 42 formed to expose a portion of the filtrate water collecting member 3, and the portion is formed of a transparent member.

Description

  The present invention relates to a membrane module for filtering treated water such as river water, lake water, and various types of wastewater.

  The membrane module generally has a filtered water collecting member connected to one end side or both end sides of the filtering member (Patent Documents 1 to 3, etc.). The filtering member and the filtered water collecting member are connected by a fusing agent and an adhesive.

  In addition, if leakage of floating substances to the filtered water occurs due to damage to the filtration membrane of the filtration member during the filtration process, the quality of the filtered water is reduced. It is necessary to replace the filter membrane or repair it.

  Therefore, in order to be able to identify the filter member that causes the filtered water quality when the quality of the filtered water is reduced, a device in which a transparent member is applied to a part of the pipe connected to each filter member is known (patent) Reference 4).

Japanese Patent Laid-Open No. 11-76764 JP 2005-125198 A Japanese Patent Laid-Open No. 10-57775 JP-A-8-132039

  When the filtration member and the filtration water collecting member are made of a polymer material, a membrane module in which the adhesive strength between the two members is secured by a fusing agent or an adhesive can be obtained.

  However, when the filtration member is made of an inorganic material (for example, ceramics) and the filtered water collecting member is made of a polymer material, if an adhesive made of a polymer resin is applied to join the two members, the polymer materials are joined together. It becomes difficult to obtain more durable bonding strength.

  In addition, the connecting portion of the two in the conventional membrane module is in a mode of being in direct contact with the water to be treated (for example, sewage, waste water, etc.) and is directly affected by various substances and temperature contained in the water to be treated. Become.

  Moreover, the transparent member of patent document 4 for specifying the filtration member which causes a water quality fall is provided in piping connected to the filtration member instead of the filtration member main body. Therefore, when arrange | positioning a filtration member in various aspects, it is necessary to ensure the installation space of piping which has the said transparent member. Particularly, the piping having the transparent member has a limited space for avoiding physical buffering with peripheral equipment.

  MEANS TO SOLVE THE PROBLEM This invention was made in view of said situation, and the membrane module and membrane unit which can ensure the durability of the connection part of a filtration member and a filtration water collection member, chemical resistance, and can monitor deterioration of a filtration member in space-saving The issue is to provide

  Therefore, the membrane module of the present invention includes a connecting portion between one end of the filtration member and a filtrate collection member for introducing solid-liquid separated water from the one end, and covers the assembly member with a molding part of a covering material. An exposed portion for exposing a part of the assembly member is formed in the part, and the part is made of a transparent member. The membrane unit of the present invention includes a plurality of the membrane modules.

  According to the above invention, since at least the connection portion between the filtration member and the filtrate collection member is covered with the molding portion, the connection portion is not exposed to the water to be treated, and the collection portion is exposed from the exposed portion of the molding portion. The inside of the member can be confirmed.

  Moreover, when the said filtration member and the said assembly member are connected with an adhesive agent, the liquid-tightness between the said members will be ensured further.

  According to the above invention, the durability and chemical resistance of the connecting portion between the filtration member and the filtration water collecting member can be ensured, and the deterioration of the filtration member can be monitored in a space-saving manner.

(A) is a longitudinal cross-sectional view of a membrane module of one end single pulling type in the embodiment of the invention, (b) is a vertical sectional view of a membrane module of single end pulling type in the embodiment of the invention, and (c) is a molding of the membrane module. The perspective view which showed the exposed part formed in the part. (A) is a longitudinal cross-sectional view of a membrane module of the one end pulling type membrane module of the embodiment of the invention, and (b) is a membrane member of the one end pulling type of the filtration member width direction juxtaposition type in the embodiment of the invention. (A) is a front view of the membrane unit in 1st embodiment of invention, (b) is the one-side side view of the unit. (A) is a front view of the membrane unit in 2nd embodiment of invention, (b) is the one-side side view of the unit. (A) is a side view of the filtered water collecting member in which the insertion groove is formed, and (b) is a longitudinal sectional view of the filtered water collecting member to which the filtering member is inserted and fixed. (A) is the one end side view of the molding part of the coating | covering material which coat | covered the filtrate water collecting member, (b) is a front view of the one end side of the membrane module provided with the molding part. (A) is a longitudinal cross-sectional view of a membrane module on a manufacturing base, (b) is a side view showing an end side of a filtrate collecting member to which a filtering member is inserted and fixed, and (c) is a side surface of one side of the collecting member. . (A) is a longitudinal cross-sectional view of the membrane module on which the mold of the covering material molding part is mounted on the production stand, and (b) is an AA cross-sectional view of the molding part. The longitudinal cross-sectional view explaining the process in which the formwork of a coating material molding part is removed from a membrane module. (A) is a side view of the surface-treated filtered water collecting member, (b) is a side view showing a stopper formed on the outer peripheral surface in the vicinity of one end side of the filtered water collecting member, and (c) is an insertion groove extending to one end. Side view of the formed filtered water collecting member, (d) is a side view showing a mode in which the filtering member inserted into the insertion groove of the collecting member is fixed by fixing members from both ends, and (e) is a cap shape , A side cross section of a cap-shaped fixing member formed with a groove, a vertical cross section of a cylindrical fixing member formed with a release slit, a side surface of a cylindrical fixing member, a cap-shaped cylindrical shape formed with a groove The figure which showed the side surface of the fixing member. (A) is the longitudinal cross-sectional view which showed the edge part of the filtration water collection member in which the filtration member formed by converging a cylindrical hollow fiber membrane on a manufacturing frame was inserted in plate shape, (b) is the filtration member (C) is a longitudinal sectional view showing an end portion of a filtrate collecting member into which a filtration member formed by converging ultra-thin hollow fiber membranes in a plate shape on a manufacturing base is shown, (d) ) Is a perspective view showing the filtration member.

  Embodiments of the present invention will be described below.

[Mode of membrane module]
The membrane module 1a illustrated in FIG. 1 (a) is a one-sided pulling-type membrane module, and is a filtered water collecting member 3 for introducing filtered water (solid-liquid separated water) from one end of the filtering member 2 and this one end. The filtered water collecting member 3 is formed by covering with a covering material 4 including a connecting portion. One end of the filtered water collecting member 3 for discharging the filtered water is exposed from the molding portion 41 of the covering material 4. In addition, the shaping | molding part 41 of the coating | covering material 4 is also formed in the one end side of the filtration member 2 in which the filtered water collection member 3 is not comprised.

  The membrane module 1b illustrated in FIG. 1B is a double-sided single-drawing membrane module, and a filtered water collecting member 3 is connected to both ends of the filtering member 2. The filtered water collecting member 3 includes at least a connecting portion with the filtering member 2 and is covered with a molding portion 41 of the covering material 4. One end of the filtered water collecting member 3 for discharging the filtered water is exposed from the molding part 41.

  As shown in FIGS. 3A to 3C, the molded part 41 of the membrane modules 1a and 1b is formed with an exposed part 42 that exposes a part of the filtered water collecting member 3.

  The membrane module 1c illustrated in FIG. 2 (a) is a one-sided pulling-type membrane module, and includes a connecting portion between one end of the filtration member 2 and a filtrate collection member 3 for introducing filtrate from the one end. The filtered water collecting member 3 is formed by coating with a covering material 4. Both ends of the filtered water collecting member 3 for discharging the filtered water are exposed from the molding portion 41 of the covering material 4. In addition, the shaping | molding part 41 is formed also in the one end side of the filtration member 2 in which the filtered water collection member 3 is not comprised.

  The membrane module 1d illustrated in FIG. 5B is a one-end double-drawing membrane module, and one having a plurality of filtration members 2 arranged side by side in the width direction, and filtered water from which filtered water is introduced from one end. The filtered water collecting member 3 is formed by covering with a covering material 4 including a connecting portion with the collecting member 3. Similar to the filtered water collecting member 3 of the membrane module 1 c, both ends of the filtered water collecting member 3 for discharging the filtered water are exposed from the molding portion 41 of the covering material 4. In addition, the shaping | molding part 41 is formed also in the one end side of the filtration member 2 in which the filtered water collection member 3 is not comprised.

  In the membrane modules 1c and 1d, the exposed portion 42 is formed by the molding portion 41. In particular, in the membrane modules 1 c and 1 d, two exposed portions 42 are formed, and each exposed portion 42 is formed near both ends of the filtered water collecting member 3.

  The filtration member 2 is composed of a plate-like cell provided with an organic membrane, a ceramic membrane, and a separation membrane exemplified by an inorganic membrane other than the ceramic membrane. Examples thereof include those provided with an organic membrane hollow fiber membrane, an organic flat membrane, an inorganic flat membrane, an inorganic single tube membrane and the like. Examples of the material of the organic film include cellulose, polyolefin, polysulfone, PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene), and the like. The pore size of the filtration membrane provided in the filtration member 2 is selected according to the particle size of the substance to be subjected to solid-liquid separation. For example, if it is used for solid-liquid separation of activated sludge, a filtration membrane having a pore size of 0.5 μm or less is applied, and if sterilization is required, such as filtration of purified water, a pore size of 0.1 μm or less is used. A filtration membrane is used.

  The filtered water collecting member 3 is formed of a cylindrical or prismatic cylinder. As shown in FIGS. 5 (a) and 5 (b), an insertion groove 31 into which one end of the filtering member 2 is inserted is formed in the filtered water collecting member 3 in parallel with the axial direction of the member 2.

  When the filtered water collecting member 3 is made of a single material, it is made of a transparent member made of materials exemplified by acrylic resin, polycarbonate resin, ABS resin, and hard vinyl chloride (PVC) resin. The term “transparent” means translucency, including translucency, to such a degree that changes in clear filtrate water (for example, turbidity) can be monitored at least visually.

  The filtered water collecting member 3 may be made of the transparent material only in the portion corresponding to the place for visual monitoring. That is, parts other than the part corresponding to the part need not necessarily be transparent, and are made of an organic material such as an inorganic material exemplified by metal or ceramic, or a resin. The resin is arbitrarily selected from, for example, a thermosetting resin, a thermoplastic resin, a two-component curable resin, an ultraviolet curable resin, and the like.

  The filtered water collecting member 3 comes into contact with the filtered water but is not directly exposed to the water to be treated, and is reinforced by covering the portion other than the filtered water discharge port with the covering material 4. The material of the filtered water collecting member 3 considers the usage environment such as the pH of the chemical for cleaning the filtered water and the membrane module, and is easy to manufacture the member main body and the workability of bonding with the filtering member 3 and the covering material 4 Selected from.

  Further, as shown in FIG. 10 (a), the surface of the filtered water collecting member 3 may be subjected to a surface treatment 32 such as a chemical (primer) treatment or a rough surface treatment before being coated. As shown in FIG. 5B, a stopper 34 for preventing the pipe attached to the member 3 from dropping off is appropriately provided on the outer peripheral surface of the filtrate collecting member 3 in the vicinity of the filtrate discharge side end. It is formed.

  Further, the insertion groove 31 may be formed up to one end of the filtered water collecting member 3 as shown in FIG. According to this aspect, the operation of inserting the filtering member 2 into the filtered water collecting member 3 is facilitated. In this case, the filtration member 2 inserted into the insertion groove 31 is fixed by fixing members 33 from both ends of the insertion groove 31 as shown in FIG.

  The fixing member 33 is formed of the same material as that of the filtered water collecting member 3. Examples of the fixing member 33 include fixing members 33a to 33e illustrated in FIG. The fixing members 33a and 33b are attached to the release end of the insertion groove 31 shown in FIG. The fixing member 33 a is of a cylindrical cap type that closes the opening on one end side of the filtered water collecting member 3. In the cap-type fixing member 33b, an insertion groove 331 into which the filtration member 2 is inserted is formed in parallel with the axial direction of the member 33b. The fixing members 33 c to 33 e are attached to the non-open end of the insertion groove 31. The fixing member 33c is formed of a cylinder having a release slit 332 formed therein. The fixing member 33d is a cylindrical body. The fixing member 33e is formed of a cylindrical body, and an insertion groove 331 into which the filtration member 2 is inserted is formed in parallel with the axial direction of the cylindrical body.

  The molding part 41 of the covering material 4 is molded into a rectangular parallelepiped shape as illustrated in FIGS. Examples of the material of the covering material 4 include inorganic materials exemplified by metals and ceramics, and organic materials exemplified by thermosetting resins, thermoplastic resins, two-component curable resins, ultraviolet curable resins, and the like. A material suitable for the properties of the liquid to be treated including workability and durability is selected from these materials. Examples of the thermosetting resin include an epoxy resin, a melamine resin, and a phenol resin. Examples of the thermoplastic resin include vinyl chloride resin, ABS resin, fluororesin, polyethylene, polypropylene, and polystyrene. Examples of the two-component curable resin include a urethane-based resin. As the urethane-based resin, when a hard urethane resin is used, work at normal temperature is possible, so that the workability is high, and the covering material 4 having durability and chemical resistance can be configured. Examples of the hard urethane resin include hydrated alumina-containing polyester polyol type urethane resin.

  The filtering member 2 and the filtered water collecting member 3 are connected by an adhesive 6 as shown in FIG. The adhesive 6 has both an adhesive function and a liquid tight function. The bonding function also functions as a temporary tack. Moreover, as shown in the figure, one end of the filtration member 2 to which the filtrate collecting member 3 is not attached is sealed with a seal member 20 to ensure a liquid-tight function. The liquid-tight function prevents the four components of the covering material from entering the filtered water collecting member 3 and the filtering member 2 during the manufacturing process of the membrane modules 1a to 1d. The liquid tightness function only needs to function until the covering of the filtered water collecting member 3 by the covering material 4 is formed, and does not require excessive pressure resistance. It is sufficient that these functions are performed at least until the completion of the integral molding work by the covering material 4, and the functions can be replaced by the covering material 4 after the work is finished (after molding and solidification).

  Examples of the adhesive 6 include inorganic adhesives and organic adhesives. Examples of inorganic adhesives include silica adhesives and ceramic adhesives. Organic adhesives are acrylic resin adhesives, urethane resin adhesives, epoxy resin adhesives, vinyl chloride resin solvent adhesives, silicone adhesives, nitrocellulose adhesives, phenol resin adhesives, polyvinyl alcohol Examples of such adhesives are melamine resin adhesives, urea resin adhesives. In addition, from the features and functions of the adhesive 6, it can be classified into instantaneous adhesives, elastic adhesives, two-component room temperature curing resin adhesives, thermosetting resin adhesives, hot melt adhesives, etc. it can.

[Mode of membrane unit]
A mode of the membrane unit including the membrane modules 1a to 1d will be described.

  The membrane unit 7 illustrated in FIGS. 3A and 3B is a unit including a plurality of membrane modules 1a, 1c, and 1d. The membrane unit 7 includes a frame 70 in which the membrane modules 1a, 1c, and 1d are arranged in parallel so that the longitudinal direction of the membrane modules 1a, 1c, and 1d is vertical. A solid line arrow shown in FIG. 5A indicates “flow of water to be treated”, and a dotted line arrow indicates “flow of filtered water”. In the membrane unit 7, the one end side of the filtrate collecting member 3 exposed from the molding part 41 on the upper end side of the membrane modules 1a, 1c, 1d is in a negative pressure state, so that the water to be treated is fixed by the filtration member 2 of the membrane module. The filtered water obtained by liquid separation is discharged from the one end.

  The frame 70 includes a pair of upper end support portions 72 that support the molding portion 41 on the upper end side of the membrane modules 1 a, 1 c, and 1 d at the upper end frame portion 71 of the frame 70, and the membrane at the lower end frame portion 73 of the frame 70. And a lower end support portion 74 that supports the molding portion 41 on the lower end side of the modules 1a, 1c, and 1d. The upper end of the frame 70 is provided with an upper end pressing portion 75 that presses the molding portion 41 on the upper end side. The lower end support portion 74 is formed with a recess that fits with the molding portion 41 on the lower end side, and positioning of the membrane modules 1a, 1c, and 1d in the frame 70 is facilitated. A pipe 50 such as a flexible pipe is connected to one end of the filtered water collecting member 3 exposed from the molding portion 41 on the upper end side of the membrane modules 1a, 1c, and 1d, and the filtered water introduced from each module is further connected to the pipe 50. Is connected to a filtered water outlet pipe 51 for transferring the water to the outside of the system. The exposed portions 42 of the membrane modules 1a, 1c, and 1d can be observed from above the membrane unit 7.

  In the membrane unit 9 illustrated in FIGS. 4A and 4B, a frame 91 in which the longitudinal direction of the membrane module 1b is horizontal and a plurality of the modules are arranged in parallel is laminated in the unit frame 90. The unit frame 90 is fixed on the foundation frame 92.

  In the membrane module 1b, the upper end of the molding part 41 is fitted with the upper end frame part 911 of the frame 91, while one end of the filtrate collecting member 3 exposed from the lower end of the molding part 41 is supported on the lower end frame part 912 of the frame 91. It is supported in the frame 91 by being connected to the water outlet branch pipe 93 via the connector pipe 94. Connected to the branch pipe 93 is a filtrate outlet pipe 95 for transferring filtrate collected from each membrane module 1b to the outside of the system. The exposed portion 42 of the membrane module 1b can be observed from both side surfaces of the membrane unit 9.

  The unit frame 90 can also include a membrane module 1a. In the case of the membrane module 1 a, the lower end portion of the molding portion 41 that does not expose the filtered water collecting member 3 is fitted and supported by a support portion (not shown) disposed on the lower end frame portion 912 of the frame 91. The exposed portion 42 of the membrane module 1 a can be observed from one side surface of the membrane unit 9.

[Example of manufacturing method of membrane module]
An example of the manufacturing method of the membrane module of this embodiment is demonstrated. Here, an example of the manufacturing process of the membrane module 1a will be described.

  First, as shown in FIG. 7A, one end of the filtering member 2 is inserted into the insertion groove 31 of the filtered water collecting member 3, while the other end of the member 2 has the same configuration as the filtered water collecting member 3. In the state inserted in the support groove 121 of the cylindrical support body 12, the said filtrate water collecting member 3 and the said support body 12 are each mounted in the hollow parts 11a and 11b on the manufacture stand 10 perpendicularly | vertically.

  Next, the support rods 13a and 13b arranged at the same interval as the entire length of the filtration member 2 are inserted into the filtered water collecting member 3 and the cylindrical support body 12, respectively, and are attached and detached at the recessed portions 11a and 11b. Freely supported vertically. The support bars 13a and 13b serve to support the filtered water collecting member 3 on the production base 10 and to regulate the overall length of the membrane module 1a.

  In the embodiment illustrated in FIG. 11A, the filtered water collecting member 3 into which the filtering member 2 formed by converging the circular hollow fiber membrane illustrated in FIG. It becomes the form supported with the support bar 13a in the hollow part 11a. The embodiment illustrated in FIG. 6C is a filtered water assembly into which the end side resin layer 21 of the filtration member 2 formed by converging the ultrafine hollow fiber membrane illustrated in FIG. The member 3 is supported by the support bar 13 a at the recess 11 a of the manufacturing base 10.

  Then, as shown in FIGS. 7A, 7 </ b> B, and 7 </ b> C, the insertion groove 31 of the filtered water collecting member 3 and the filtering member 2 are bonded by the adhesive 6.

  Next, as shown in FIG. 8A, the molds 14a and 14b assembled at both ends of the filtration member 2 are detachably installed on the manufacturing base 10 in the coating material injection process. As shown in FIGS. 4A and 4B, a convex portion 17 for forming the exposed portion 42 is provided on the inner surface of the mold 14a. As shown in FIG. 5A, the convex portion 17 is formed with a curved surface portion 171 corresponding to the surface to be exposed of the filtered water collecting member 3. A sealing member 15 such as an O-ring or a square ring is appropriately interposed between the molds 14a and 14b and the filtering member 2 and the filtered water collecting member 3. In addition, a sealing plug 16 is attached to the opening on the end side of the filtered water collecting member 3 that does not function as a filtered water discharge port. Thereafter, the covering material 4 is injected into the space in the molds 14a and 14b.

  After the covering material 4 injected into the spaces in the molds 14a and 14b is cured, the filter member 2 is removed from the manufacturing base 1 with the molds 14a and 14b attached as shown in FIG. Next, the molds 14 a and 14 b are removed from the filter member 2. Then, the sealing member 15 is removed from the filtering member 2 and the filtered water collecting member 3.

  Through the above-described steps, the molding part 41 made of the covering material 4 is formed at both ends of the filtration member 2, and one molding part 41 covers and covers the connection part between the filtration member 2 and the filtrate collecting member 3. The membrane module 1a in which the filtered water discharge port 3 is exposed is completed. Moreover, in the shaping | molding part 41, it is the state in which the exposed part 42 which exposes a part of the filtrate water collection member 3 was formed. The membrane modules 1b to 1d are also manufactured in the same manner as the above-described steps.

[Effect of this embodiment]
According to the membrane modules 1a to 1d described above, at least the connection portion between the filtration member 2 and the filtrate collection member 4 is covered with the coating material 4, so that the portion is not exposed to the water to be treated. Thereby, even if the filtration member 2 is made of an organic material (or an inorganic material) and the filtered water collecting member 3 is made of an inorganic material (or an organic material), the connecting portion of both is included in the water to be treated. It is no longer directly affected by various substances and temperature, and durability and chemical resistance are improved. Moreover, the deterioration state of the filter member 2 can be monitored in a space-saving manner.

  Leakage of suspended substances such as activated sludge substances due to deterioration of the filter member 2 can be confirmed as follows. The deterioration of the filtration member 2 means that the surface of the filtration membrane has a defect, so that the water to be treated is not sufficiently filtered and the suspended matter is leaked into the filtration water collecting member, or the filtration member is filtered on the membrane surface. It means a so-called fouling phenomenon in which substances are deposited to reduce membrane permeability.

  (1) Confirmation of turbidity and coloring of filtered water.

  (2) Discovered water quality deterioration through monitoring and periodic analysis of filtered water quality.

(3) Visual confirmation of the transparent portion of the filtered water collecting member 3 exposed at the exposed portion 42 Normally, a membrane unit composed of a plurality of membrane modules is installed in the membrane separation tank and the suction pump is automatically operated. Since it is driving, the deterioration of the filter member 2 is often found by the confirmation method (2).

  After the discovery of the floating substance leak by the methods (1) and (2), the operation is stopped in order to replace or repair the filter member 2. In order to increase the efficiency of this work, it is important to quickly find and identify the filtering member 2 deteriorated from the plurality of membrane modules.

  In the work of finding the deteriorated filter member 2, the filtered water collecting member 3 exposed from the exposed portion 42 as shown in (3) after drawing out the water to be treated in the membrane separation tank or pulling up the membrane unit from the tank. The state of filtered water can be visually confirmed from the transparent part. Accordingly, the deterioration of the filtering member 2 and the identification of the member 2 can be performed quickly. Moreover, damage of the membrane module and water leakage due to this damage can be estimated by confirming the presence or absence of filtered water from the transparent portion of the filtered water collecting member 3.

  Furthermore, before the filtered water collecting member 3 is covered, the filtering member 2 and the filtered water collecting member 3 are bonded with an adhesive, thereby further ensuring the liquid tightness between the members 2 and 3. Therefore, it is possible to prevent the four components of the covering material from entering the filtrated water collecting member 3 during the manufacturing process of the membrane modules 1a to 1d. The aspect in which the filtering member 2 is inserted and bonded into the insertion groove 31 of the filtered water collecting member 3 is not limited to the plate-shaped filtering membrane, but the pipe-shaped filtering membrane, the soft sheet shape, A pipe-shaped filtration membrane or an ultrafine hollow fiber membrane can also be applied.

  Moreover, the insertion groove | channel 31 is formed to the end of the filtration water collection member 3, and the insertion operation of the filtration member 2 to the said filtration water collection member 3 becomes easy in the manufacturing process of the membrane modules 1a-1d.

  For example, in the embodiment of FIG. 7A, an insertion groove similar to the insertion groove 31 is formed also in the cylindrical support 12. In the process of preparing the insertion of the filtered water collecting member 3, a support bar 13a is mounted on the groove 11a of the manufacturing base 10, and the filtered water collecting member 3 is mounted on the groove 11a so that the open end of the inserting groove 31 is the upper end. Placed. On the other hand, a support bar 13b is mounted on the groove 11b, and the cylindrical support 12 is placed on the groove 11b so that the open end of the insertion groove is the upper end. When the filtering member 2 is inserted into the insertion groove 31 of the filtered water collecting member 3, both ends in the width direction of the filtering member 2 are aligned with the insertion groove 31 of the filtered water collecting member 3 and the insertion groove of the support 12, respectively. What is necessary is just to move the member 2 below.

  Furthermore, various aspects of the membrane module and the membrane unit exemplified by the membrane modules 1a to 1d and the membrane units 7 and 9 are realized by arbitrarily securing the outlet of the filtrate in the filtrate assembly member 3.

DESCRIPTION OF SYMBOLS 1a-1d ... Membrane module 2 ... Filtration member 3 ... Filtration water collecting member, 31 ... Insertion groove 4 ... Cover material, 41 ... Molding part, 42 ... Exposed part 6 ... Adhesive 7, 9 ... Membrane unit

Claims (6)

A connecting portion between one end of the filtering member and a filtered water collecting member that introduces solid-liquid separated water from the one end is covered with a molding portion of a covering material, and a part of the collecting member is covered with the molding portion. An exposed part to be exposed is formed, and the part is made of a transparent member. The membrane module according to claim 1, wherein the filtration member and the assembly member are connected by an adhesive. The filtered water collecting member is formed of a cylinder, and an insertion groove into which one end of the filtration member is inserted is formed in parallel to the axial direction of the cylinder, and the insertion groove extends to one end of the cylinder. The membrane module according to claim 1 or 2, wherein the membrane module is formed. A membrane unit comprising a plurality of membrane modules according to any one of claims 1 to 3. The membrane unit according to claim 4, wherein a plurality of the membrane modules are arranged in parallel in the longitudinal direction. 5. The membrane unit according to claim 4, wherein a plurality of the membrane modules are arranged in parallel in the longitudinal direction.

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