JP2020157288A - Membrane cartridge guidance support panel or immersion membrane separator - Google Patents

Abstract

To provide a membrane cartridge guidance support panel that functions as a side cover of an immersion membrane separator and also as a membrane cartridge guide support.SOLUTION: A membrane cartridge guidance support panel 8, which is characterized in that (a) a base substrate 80, (b) 26 linear extrusions 81 that are formed on the front surface of the base substrate 80 and extend vertically upward at equal intervals, each having a tapered tip 81A, (c) a reinforcing frame 85 that is formed on the back surface of the base substrate 80 and surrounds its perimeter, (d) reinforcing ribs 86, and (e) 24 grooves 63 that make the interior of the linear extrusions 81 hollow, are molded integrally. By the extrusions 81 and the front surface of the base substrate 80 are formed 25 slits 82 that guide a membrane cartridge.SELECTED DRAWING: Figure 1

Description

The present invention is a membrane cartridge guide support panel or immersion type that guides and supports a flat membrane cartridge that is immersed in a liquid to be filtered such as domestic wastewater stored in a wastewater treatment tank and filters the liquid to be filtered into the membrane housing. Regarding the membrane separator.

The immersion type membrane separation device generates bubbles due to aeration from the aeration (or aeration) housing, and circulates the filtration target liquid in the wastewater treatment tank while raising the bubbles due to the aeration and the filtration target liquid into the membrane housing. I'm letting you. Activated sludge in the liquid to be filtered is decomposed by contact with air, and the water in the liquid to be filtered is filtered through the filtration membrane sheet of the membrane cartridge which is aligned and supported in the membrane housing and drained. It is discharged to the outside of the processing tank. The membrane cartridge vibrates due to the rise of air bubbles due to the liquid to be filtered and the air diffused, and the adhesion of activated sludge to the filtration membrane sheet is prevented.

Therefore, the membrane cartridges are aligned and supported with a gap left so that they can vibrate in the membrane housing surrounded by the panel. For example, in Japanese Patent Application Laid-Open No. 2012-25213, the membrane cartridge (membrane element) 2 is mounted on the membrane housing. The membrane cartridge guide support panel (holding portion) 15 is screwed and fixed to the horizontal frames (cross beams) 11, 12, and 13 on the side surface of the membrane housing 1 so that the membrane housing 1 can be inserted and stored from above. There is.

A plurality of slits (guide grooves) 15a are formed on the surface of the membrane cartridge guide support panel 15 to hold the side edges of the membrane cartridges 2 to be housed at predetermined intervals in the plate thickness direction. Since the side edges of the membrane cartridge 2 are held by the slits 15a at predetermined intervals in the plate thickness direction, there is no risk of damage to the filtration membrane sheet 4 or the like due to contact between the membrane cartridges 2.

The membrane cartridge guide support panel 15 is obtained by extrusion molding of a resin material such as polyvinyl chloride in order to prevent damage to the stored membrane cartridge 2, and the slit 15a causes the stored membrane cartridge 2 to rattle in the plate thickness direction. The film cartridge 2 is formed to be slightly wider than the thickness of the side edge portion of the film cartridge 2 so that the film cartridge 2 can be smoothly stored and taken out.

Japanese Unexamined Patent Publication No. 2012-25213

However, in the above-mentioned conventional technology, the membrane cartridge guide support panel 15 is an extruded body made of a resin material such as polyvinyl chloride, and the width of the slit 15a of the membrane cartridge guide support panel is constant even at the opening at the upper end. Therefore, it is not easy to align the lower end of the membrane cartridge 2 with the opening.

Further, the slit 15a is formed for almost the entire length (about 1 m) of the vertically long film cartridge 2, and the film cartridge 2 which may be deformed due to variations due to molding is smoothly guided even when pushed down along the slit 15a. This is not always the case, and there is a risk that the lower end of the membrane cartridge 2 straddles the slit 15a and invades the adjacent slit, causing a mounting error.

Further, since the membrane cartridge guide support panel 15 is made of polyvinyl chloride and is vertically long, it is easily bent and it is not easy to screw and fix it to the horizontal frame.

Therefore, the present invention proposes a new membrane cartridge guide support panel that can be easily fixed to the horizontal frame and that the membrane cartridge can be easily inserted, and a immersion type membrane separation device that mounts the membrane cartridge guide support panel. ..

In the present invention, a plurality of ridges extending in the vertical direction at equal intervals by forming an upward tapered portion on the base substrate and the surface of the base substrate, and a plurality of ridges having a hollow inside on the back surface of the base substrate. The feature is that the membrane cartridge guide support panel with a groove is injection-molded with elastic synthetic resin, and the membrane cartridge guide support panel is placed in the upper part and the lower part with a space in the middle of the membrane housing of the immersion type membrane separation device. To do.

Therefore, according to the present invention, not only is it easy to attach the membrane cartridge guide support panel to the membrane housing and the membrane cartridge can be reliably attached, but also because there is no slit in the middle portion of the membrane housing, the membrane cartridge is diffused by air diffusion. The middle part of the housing tends to vibrate.

Front view (A), right side view (B), bottom view (C), back view (D), and XX'cross-sectional view of the membrane cartridge guide support panel according to the embodiment of the present invention. E) and YY'longitudinal sectional view (F). An enlarged fracture front view (A), an enlarged fracture plan view (B), an enlarged fracture bottom view (C), and an enlarged fracture right side showing the main part of the membrane cartridge guide support panel shown in "FIG. 1" in an enlarged manner. A top view (D), an enlarged fracture AA'longitudinal sectional view (E), an enlarged fracture BB'longitudinal sectional view (F), and an enlarged fracture CC'cross-sectional view (G). It is a cross-sectional view (H) of the fracture DD'. It is a front view (A) and the right side view (B) of the immersion type membrane separation apparatus which concerns on embodiment of this invention. It is a top view of the air diffuser housing of the immersion type membrane separation device which concerns on embodiment of this invention. It is a front view (A) which partially broke the filtration membrane sheet of the membrane cartridge which concerns on embodiment of this invention, and is the enlarged front view (B) of a main part. It is a figure which shows the screwed-fixed state of the membrane cartridge guide support panel which concerns on embodiment of this invention, is the expanded fracture side view (A) which looked at the membrane housing from the inside, and EE'cross-sectional view in the expanded fracture side view B), a cross-sectional view taken along the line FF'in a cross-sectional view taken along the line E-E', and an enlarged fracture side view (D) of the membrane housing viewed from the outside. It is a perspective view which shows the membrane cartridge and elastic spacer which concerns on embodiment of this invention. The mounting state explanatory drawing of the membrane cartridge which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described.
[Immersion type membrane separator]
First, FIG. 3A is a front view of the immersion membrane separation device 2, but the rear view (not shown) also has a symmetrical shape, and the right side view of FIG. 3B also has a symmetrical shape with the left side view (not shown). As shown in FIG. 3, the immersion type membrane separation device 2 is immersed in a liquid to be filtered such as domestic wastewater stored in the wastewater treatment tank 1, and a flat plate-shaped membrane cartridge 7 for filtering the liquid to be filtered is used. It is composed of a membrane housing 4 to be housed and an air diffuser housing 3 that generates air bubbles due to air diffusion at the lower part of the membrane housing 4.

The air diffuser housing 3 forms a frame body 30 by welding and fixing a frame-shaped upper frame 31 and a lower frame 32 composed of horizontal frames 34 at positions intermediate with the upper ends of the four vertical frames 33. There is. The end covers 35 are welded and fixed to the front and rear windows of the frame body 30, and the side covers 36 are welded and fixed to the left and right windows to surround the frame body 30 so that air bubbles due to air diffusion do not leak to the outside. I'm out.

Further, two vinyl chloride air diffusers 37 are arranged and fixed in parallel in the lower part of the lower frame 32 in the front-rear direction, and a large number of air diffuser nozzles 38 are bored and formed in the air diffuser 37. ing.

The membrane housing 4 mounted on the air diffuser housing 3 has a main body housing portion 5 having the same planar shape as the air diffuser housing 3, and a holding housing portion that is widened to the left and right at the upper part of the main body housing portion 5. 6 is connected and fixed.

First, the main body housing portion 5 is provided with four vertical frames 53 in the extension line direction of the vertical frame 33 of the air diffuser housing 3, and the upper frame 51 and the lower frame 52 are welded and fixed to the upper and lower ends of the vertical frame 53. A total of eight horizontal frames 54 are welded and fixed at two positions that divide the vertical frame 53 into three equal parts to form the frame body 50.

Further, on the front surface and the back surface of the frame body 50, an end cover 55 is welded and fixed to a total of 6 windows on each of the three sides separated by a horizontal frame 54 to prevent air bubbles from leaking due to air dispersion. Side covers 56 are welded and fixed to the intermediate windows separated by the horizontal frame 54 on both the left and right side surfaces of the above.

A total of eight polypropylene film cartridge guide support panels 8, which will be described later, are screwed and fixed to the windows on the upper and lower sides, which are not welded and fixed, to the side cover 56. Also serves as. When the position of the membrane cartridge guide support panel 8 is intentionally shown in FIG. 1 and the specification, the upper side will be described by adding the alphabet of reference numeral U, and the lower side will be described by adding the alphabet of reference numeral L.

On the other hand, in the upper holding housing portion 6, a frame-shaped upper frame 61 and a lower frame 62 that are wide in the left-right direction are composed of a horizontal frame 64, and the frame body 60 is welded and fixed to four vertical frames 63 at its corners. Is forming. Two end covers 65 are welded and fixed to the front and rear windows of the frame body 60, and two side covers 66 are welded and fixed to the left and right side windows.

Further, four angles 67 are welded and fixed at two front and rear positions on both the upper left and right sides of the holding housing portion 6, and two vinyl chloride water collecting pipes 68 are fixed on the angles 67.

Further, the water collecting pipe 68 is formed with water collecting nozzles 69 corresponding to two water intake nozzles 72 at the upper ends of each membrane cartridge 7 housed in the membrane housing 4, and each nozzle is a water collecting tube 69. Communicating.

[Membrane cartridge]
As shown in FIG. 5, in the membrane cartridge 7, a filtration membrane sheet 70 made of a porous membrane made of PTFE is attached to the surface of the filter plate 71, and the filtrate is extracted through the filtration membrane sheet 70. There is. The filter plate 71 is a substantially rectangular ABS resin plate having a basic shape of 490 mm in width, 1200 mm in height, and 7 mm in thickness, and 50 mm ear portions 73 are formed on both sides of the upper width.

However, since the filter plate 71 is resin-molded, the plate surface is deformed such as irregular undulations and curves, and the shape of the filter plate 71 varies. On the surface of the filter plate 71, a plurality of vertical grooves 71A for guiding the filtrate upward and horizontal grooves 71B communicating at the upper ends of the vertical grooves are formed, and further provided at two locations above the horizontal grooves 71B. A connection groove 71C communicating with the water intake nozzle 72 is formed.

Further, an ear portion 73 extending to the left and right is provided on the upper portion of the filter plate 71, and a service hole 73A is bored in the ear portion 73. The service hole 73A is a hole for confirming that the plurality of membrane cartridges 7 are aligned and stored in a regular position in the membrane housing 4.

[Membrane cartridge guide support panel]
The membrane cartridge guide support panel 8 shown in FIGS. 1 and 2 has a basic shape of a rectangular parallelepiped having a length of 345 mm, a width of 375 mm, and a depth of 17 mm, and is formed on the front (surface) side of a base substrate 80 having a wall thickness of 2 mm. Twenty-six ridges 81 with a height of 9 mm, a width of 7.4 mm, and a length of 333 mm and screw holes 86 with a diameter of 5.2 mm are provided at eight locations, and the width of the ridges 81 is hollow on the back surface side. Twenty-four concave grooves 83 having a height of 3.4 mm and a depth of 9 mm, two reinforcing ribs 84 having a height of 6 mm and a thickness of 2 mm, and a reinforcing frame having a height of 6 mm and a thickness of 2 mm along the outer circumference of the base substrate 80. With 85. Screw-on convex portions 87 having a diameter of 15.6 mm and a height of 6 mm are provided at eight locations, and these are integrally injection-molded with polypropylene resin.

In this embodiment, polypropylene is used as an example of the elastic resin because it is flexible, secures strength, is inexpensive, is easy to mold, and does not easily adhere to activated sludge. However, if further strength and flexibility are required, other resins may be used. It goes without saying that it will be adopted as appropriate.

The injection mold is divided into a front side and a back side by providing injection gates at two places, and each divided mold is tapered on a concave portion or a convex portion formed on a flat surface corresponding to the base substrate 80. At the same time, the edges of the concave and convex portions are also rounded so that the membrane cartridge guide support panel 8 can be easily removed after injection molding. Therefore, the above-mentioned dimensions are based on the base substrate 80, and the width and the like of the upper end surface of the protruding ridges 81 and the like are narrower than the design dimensions.

Further, the width of the ridges 81 is about half the width of 3.7 mm only on the left and right ends, and by using two membrane cartridge guide support panels 8 side by side without gaps, the width of the narrow ridges 81 in contact with each other is wide. Is the width of one, and is designed so that 50 film cartridges 7 can be continuously aligned and supported at regular intervals.

Further, the slit 82 that guides and supports the film cartridge 7 between the ridges 81 is 7.6 mm so that the film cartridge 7 having a thickness of 7 mm that may be deformed can be smoothly guided. It is designed to be slightly wider.

Further, the ridge 81 forms a tapered portion 81A on the upper end side of 10 mm, sets the width of the upper end to 4 mm, and extends the upper end opening width of the slit 82 to 11 mm. Further, the upper end side 10 mm of the base substrate 80 is also an inclined surface 80A inclined by 1 mm to the back side, and the upper end opening portion of the slit 82 is expanded to 1 mm in the width direction of the membrane cartridge 7 in the thickness direction.

The reinforcing frame 85 on the outer periphery of the back surface of the base substrate 80 is formed at the same height as the reinforcing rib 84 and the screwed convex portion 87 to prevent the membrane cartridge guide support panel 8 which is easily curved from bending and to prevent the membrane cartridge guide support panel 8 from bending. In the state where 8 is screwed and fixed, air bubbles due to air diffusion are prevented from leaking from the outer periphery thereof.

Further, the 24 vertical ridges 81 excluding the left and right ends form a vertical concave groove 83 that makes the inside hollow in order to reduce the amount of materials used, so that the ridges 81 have elasticity. The membrane cartridge guide support panel 8 is more likely to bend in the horizontal direction than in the vertical direction, and two reinforcing ribs 84 formed in the horizontal direction reduce this bending.

Further, it is known that the membrane cartridge guide support panel 8 is easily deformed after injection molding because the surface areas of the front surface and the back surface are different, but the two reinforcing ribs 84 also have a function of suppressing the deformation. I'm playing.

Further, the screw holes 86 formed at four locations above and below the membrane cartridge guide support panel 8 at a total of eight locations are formed in accordance with the formation positions of the ridges 81, and the screw heads 88A of the membrane cartridge 7 and the bolt 88 are formed. Is designed to prevent contact.

Further, the upper screw hole 86 is formed 21.5 mm below the upper end of the tapered tapered portion 81A in order to secure the elasticity of the tapered tapered portion 81A of the ridge 81. The lower screw hole 86 is formed on the 80 surface of the base substrate in which the lower portion of the ridge 81 is formed short.

The membrane cartridge guide support panel 8 is formed with screw holes 86 at four locations each at the top and bottom at approximately equal intervals so that the film cartridge guide support panel 8 is uniformly fixed to the horizontal frames 54 above and below the window portion of the main body housing portion 5.

Further, on the front surface side of each screw hole 86, the screw head accommodating portion 86A of the bolt 88 is formed so as not to protrude from the surface of the base substrate 80, and the screw head accommodating portion 86A on the back surface side is formed. Is a portion where the membrane cartridge guide support panel 8 comes into contact with the horizontal frame 54 by tightening the bolt 88 and the nut 89.

[Installation of membrane cartridge guide support panel]
The membrane housing 4 of the present embodiment assembled by welding and fixing the cover to the frame accommodates 50 membrane cartridges 7, and has a total of four windows on the upper and lower sides of the side surface of the main body housing portion 5. Is formed, and a water collecting pipe 68 is attached to the angle 67 of the holding housing portion 6.

As shown in FIG. 3A, a total of 64 screw holes 54A are formed in the upper and lower horizontal frames 54 of the windows on the side surface side of the main body housing portion 5, and two film cartridge guide supports are formed in each window. The panel 8 is screwed and fixed, and air bubbles due to air diffusion do not leak to the outer periphery of the main body housing portion 5.

As a result, a non-contact section (with the slit) having a gap of about 250 mm is formed between the upper and lower membrane cartridge guide support panels 8 so as to be covered with the side cover 56 and without the slit 82 for guiding the membrane cartridge 7. Since there is no frictional force that hinders the insertion of the membrane cartridge 7 in this non-contact section, the insertion force can be reduced.

As shown in FIG. 6, the screwing fixing portion aligns the screw hole 86 of the membrane cartridge guide support panel 8 with the screw hole 54A of the horizontal frame 54, and bolts from the side (inside) of the membrane cartridge guide panel 8. The 88 is inserted and tightened with a nut 89 from the side (outside) of the horizontal frame 54, and the screw head 88A is stored without protruding from the screw head storage portion 86A in the tightened state.

As a result of screwing and fixing, the distance between the corresponding slits 82 (distance on the surface of the base substrate) of the membrane cartridge guide support panel 8 is set to 493 mm, which is 3 mm wider than the width of the membrane cartridge 8.

[Installation of membrane cartridge]
After eight membrane cartridge guide support panels 8 are screwed and fixed to the membrane housing 4, the membrane cartridges 7 are sequentially inserted from above. When inserting the membrane cartridge 7, the elastic spacers 74 shown in FIG. 7 are previously attached to the ears 73 on both sides of the membrane cartridge 7.

The elastic spacer 74 has elastic bodies 74B fixed above and below the plate body 74A having a shape that encloses the selvage portion 73, and holds the selvage portion 73 at a predetermined position in the holding housing 6 when the membrane cartridge 7 is completely attached. This is to support the lineup.

Upon insertion, the lower end 7A of the 7 mm-thick membrane cartridge 7 is extended by 4 mm in the thickness direction of the membrane cartridge 7 by the tapered tapered portion 81AU at the upper end of the upper membrane cartridge guide support panel 8U, and the inclined surface of the base substrate 80U. It is inserted from the upper end of the slit 82U expanded to 4 mm in the width direction of the membrane cartridge 7 by 80 AU or the like.

When the membrane cartridge 7 is further pushed down, the membrane cartridge 7 is elastic in the thickness direction by the ridges 81U in the slit 82U by utilizing the gap formed by 0.6 mm in the thickness direction and 3 mm in the width direction. It descends while being pinched.

As a result, when the lower end 7A of the membrane cartridge 7 descends a non-contact section having no slit 82 and has an interval of about 250 mm and reaches the upper part of the slit 82L of the lower membrane cartridge guide support panel 8L, the lower end 7A of the membrane cartridge 7 becomes , It becomes easy to come off from the vertical line of the slit 82L.

However, in the present embodiment, the opening of the slit 82L is formed as wide as the upper membrane cartridge guide support panel 8U, and the inclined surface 80AL of the base substrate 80L and the elastic deformation of the tapered tapered portion 81AL are combined. Then, the trajectory of the lower end 7A of the membrane cartridge 7 is corrected to guide the membrane cartridge 7 to a predetermined slit 82L. With such an orbit correction function, it is possible to eliminate the insertion failure of the membrane cartridge 7 due to a slight deformation of the membrane cartridge 7 or a bias in the membrane cartridge 7 insertion operation.

Even if the lower end 7A of the membrane cartridge 7 descends from the non-contact section without the slit 82 due to deformation of the upper slit 82U or the like, and the lower end 7A of the membrane cartridge 7 deviates from the vertical line of the lower slit 82L. Since the opening of the predetermined lower slit 82L is widely formed by the tapered tapered portion 81AL and the inclined surface 80AL, and the ridge 81L is elastic, the opening is surely guided to the predetermined lower slit 82L on the lower side. It can be inserted up to the specified mounting position.

Well-known document 1 also disclosed in Patent Document 1 that elastically supports both the left and right sides of the lower end 7A of the membrane cartridge 7 that has been mounted inside the horizontal frame 54 to which the lower membrane cartridge guide panel 8L is screwed and fixed. A retaining plate (not shown) is provided.

Further, when 50 membrane cartridges 7 are mounted in the membrane housing 6, the ears 73 of the membrane cartridges 7 are elastically supported by elastic spacers 74 at predetermined intervals.

In this state, when the fixing bracket 90 is screwed and fixed to the upper frame 61 of the holding housing portion 6 with the bolt 91 and the nut 92 at the left and right upper ends of the holding housing portion 6 in which the ear portions 73 are lined up, the upper end of the membrane cartridge 7 is also elastic. The mounting of the membrane cartridge 7 is completed.

After completing the storage of 50 membrane cartridges 7 in the membrane housing 4, the water intake nozzle 72 and the water collection nozzle 68A are connected by the water collection tube 69 to complete the setting, and then the membrane housing 3 is lifted by a heavy machine or the like. , It is fixed in advance at a predetermined position of the wastewater treatment tank 1 and lowered onto the air diffuser housing 3 to which the air pump (not shown) and the air diffuser pipe 37 are connected.

After that, the membrane housing 3 is positioned and placed at a predetermined position on the air diffuser housing 3 by using the inclination guides 39 fixed at the four upper ends of the air diffuser housing 3, so that the membrane housing 3 is immersed in the wastewater treatment tank 1. After the assembly of the mold membrane separation device 2 is completed, the water collecting pipe 68 and the water collecting pump (not shown) are connected to be in an operable state.

[Operation description]
When the air pump and the water collection pump are started, air bubbles are generated from the air diffuser pipe 37, the liquid to be filtered rises in the membrane housing 4 together with the air bubbles, and the air bubbles that have passed through the membrane housing 4 are to be filtered as they are. It is released from the liquid surface into the air, the liquid to be filtered descends outside the membrane housing, the liquid to be filtered circulates during wastewater treatment, and this circulation causes the activated sludge in the liquid to be filtered to come into contact with the air, resulting in activated sludge. Decomposition is promoted.

When the membrane cartridge 7 vibrates due to air bubbles and the rise of the liquid to be filtered, the membrane cartridge guide support panel 8 that supports the membrane cartridge 7 also vibrates, and the activated sludge in the liquid to be treated that rises and falls rises and falls. It becomes difficult to adhere to the surface of No. 7 and the membrane cartridge guide support panel 8, and the cleaning work at the time of periodic inspection is also reduced. In the present embodiment, since there is no slit 82 in the intermediate portion of the membrane cartridge 7, the intermediate portion vibrates more.

[Effect of this embodiment]
In the membrane cartridge guide support panel 8 of the present embodiment, the back side of the ridge 81 is made hollow by the concave groove 83 to give elasticity to the ridge 81, and a tapered tapered portion 81A is formed on the upper portion of the ridge 81. By forming an inclined surface 80A on the upper portion of the base substrate 80 and expanding the opening of the slit 82, the membrane cartridge 7 is inserted on the upper membrane cartridge guide support panel 8U side in combination with the elastic force of the ridge 81. Is facilitating.

Further, on the lower membrane cartridge guide support panel 8L side, the trajectory of the lower end 7A of the membrane cartridge 7 that easily deviates from the trajectory through the non-contact section without the slit 82 is driven by the expanded opening and the elastic force of the protrusion 81L. It can be corrected and guided to the slit 82L.

Further, since the membrane cartridge guide support panel 8 guides and supports the membrane cartridge 7 with two sheets, the outer shape is closer to a square shape, which not only facilitates injection molding but also causes shape distortion due to solidification after mold release. Will also decrease.

Further, by forming a non-contact section of about 250 mm between the membrane cartridges 7 which does not come into contact with the slit 82, it is possible to reduce an increase in the insertion pressure when the membrane cartridge 7 is mounted.

Further, the membrane cartridge guide support panel 8 integrally molded of polypropylene does not allow air bubbles or the like due to air dispersal to escape to the outside in a state of being screwed and fixed, and the intermediate portion of the membrane cartridge 7 vibrates significantly due to air dispersal. This reduces the adhesion of activated sludge and facilitates cleaning during regular inspections.

Further, in the present embodiment, since the membrane cartridges 7 are elastically aligned and supported in the membrane housing 4, there is no wear of the filter plate 71, and a PTFE porous membrane is adopted for the filtration membrane sheet 70. Therefore, the life of the membrane cartridge 7 is extended and the filtration capacity is improved.

1 Wastewater treatment tank 2 Immersion type membrane separator 3 Air diffuser housing 4 Membrane housing 56 Side cover 7 Membrane cartridge 8 Membrane cartridge guide support panel 80 Base board 81 Convex 81A Tapered taper 82 Slit 83 Concave groove 84 Reinforcing rib 85 Reinforcing frame 86 Screw hole

Claims (3)

A pair of flat plates are arranged in pairs on the upper and lower parts of the facing side surfaces of the membrane housing placed on the diffuser housing constituting the immersion type membrane separation device installed in the wastewater treatment tank with an intermediate portion. It is a membrane cartridge guide support panel that stores the shaped membrane cartridges in an array in each slit. The membrane cartridge guide support panel is equally spaced by forming an upward tapered portion on the surface of the base substrate and the base substrate. A plurality of ridges forming the slit extending in the vertical direction, a plurality of recesses for hollowing the inside of the plurality of ridges on the back surface of the base substrate, and the plurality of recesses on the back surface of the base substrate. A membrane cartridge guide support panel characterized in that a reinforcing rib extending in an orthogonal direction and a reinforcing frame surrounding the outer periphery of the back surface of the base substrate are integrally injection-molded with a synthetic resin. The membrane cartridge guide support panel according to claim 1, wherein the synthetic resin is polypropylene. In an immersion type separation device in which a membrane housing for storing a plurality of flat film cartridges in an array is placed on an air diffuser housing for accommodating an air diffuser tube.
A plurality of ridges forming an upward tapered portion on the surface of the base substrate to form slits extending in the vertical direction at equal intervals, and a plurality of ridges having a hollow inside on the back surface of the base substrate. A film cartridge guide support in which a concave groove, a reinforcing rib extending in a direction orthogonal to the plurality of concave grooves on the back surface of the base substrate, and a reinforcing frame surrounding the outer periphery of the back surface of the base substrate are integrally injection-molded with a synthetic resin. Panel,
Immersion type characterized in that a pair of membrane cartridges are arranged in opposition to each other with an intermediate portion between the upper portion and the lower portion of the side surface of the membrane housing, and each membrane cartridge is elastically guided and supported in a slit formed by the plurality of protrusions. Membrane separation device.

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