JP2016067962A - Purifier for inside of duct, and purification system for inside of duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a purifier for inside of a duct, in which a microorganism carrier is stably fixed.SOLUTION: A purifier 100 for inside of a duct is a purifier for inside of a duct installed in a duct, and comprises: a curved member 200 including at least a curved part 210 having a curved surface along an inner wall face of the duct; a carrier fixing member 300 fixed to a recess curved surface 211 of the curved part 210; and a carrier 400 held by a carrier fixing member 300 and for carrying microorganism. Therefore, the carrier 400 is stably fixed to the purifier 100 for inside of a duct, via the carrier fixing member 300.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an in-pipe purification device and an in-pipe purification system. More specifically, the present invention relates to an in-pipe purification device capable of satisfactorily fixing a carrier for supporting microorganisms and an in-pipe purification system using the same.

  Conventionally, sewage is transferred to a sewage treatment facility through a pipeline, and all sewage purification processing is performed at the sewage treatment facility. Therefore, in the sewage treatment facility, the equipment cost or equipment space accompanying the purification equipment is required.

  Therefore, in order to reduce the burden on the sewage treatment facility, a method for purifying sewage in the pipeline using microorganisms has been proposed. For example, International Publication No. 2013/172288 (Patent Document 1) has a double tube structure composed of an outer tube wall and a water permeable inner tube, and a microorganism carrier in the gap between the double tube structures. Is disclosed.

International Publication No. 2013/172288 Pamphlet

  In the above-described purification apparatus for pipe tubs, a cuboid foam piece is used as the microbial carrier, and the microbial carrier is filled in a space in the water purification section in a free state or in a state of being accommodated in a small-diameter pipe. Is done.

  In order to prevent clogging in the pipeline (specifically, clogging due to retention of foreign matter or the like in the drainage), the present inventor decided to fix the microorganism carrier to the in-pipe purification device so as not to move. Pay attention. However, even if an adhesive is used to fix the microbial carrier directly to the in-pipe purification device, the adhesive force is weak and the microbial carrier may easily peel off during use or maintenance. There is. Accordingly, an object of the present invention is to provide an in-pipe purification apparatus in which a microorganism carrier is stably fixed.

The present inventor has found that the object of the present invention can be achieved by using a dedicated carrier fixing member that holds a microorganism carrier and directly fixes it to the in-pipe purification device, and completes the present invention. It came.
The present invention includes the in-pipe purification device described in (1) to (9) below and the in-pipe purification system described in (10).

(1)
The in-pipe purification apparatus of the present invention should be installed in a pipe. The in-pipe purification device includes a bending member, a carrier fixing member, and a carrier.
The bending member includes at least a bending portion having a curved surface along the inner wall surface of the duct. The carrier fixing member is fixed to the concave curved surface of the curved portion and holds a carrier for supporting microorganisms.

  With this configuration, the carrier is stably fixed to the in-pipe purification device via the carrier fixing member. For this reason, clogging is unlikely to occur during use, and the carrier is not easily peeled off during use and maintenance, thus providing an in-pipe purification device suitable for long-term use.

(2)
The carrier fixing member includes a holding part and a fixing part. The holding unit holds the carrier. The fixing portion is fixed to the concave curved surface of the bending portion of the bending member. In this case, the fixed portion has a fixed curved surface that is fixed to the concave curved surface along the concave curved surface.

  With this configuration, the portion used for fixing the carrier fixing member is secured by the fixed curved surface, so that more stable fixing is possible.

(3)
The carrier fixing member may be provided with a holding projection that protrudes toward the carrier.

  With this configuration, the carrier is firmly held on the carrier fixing member by the holding protrusion, so that more stable fixation is possible.

(4)
The holding part and the fixing part may be independent member pieces.

  With this configuration, the work of holding the carrier on the holding member is facilitated. In addition, it is easy to replace the carrier, which may be performed in some cases.

(5)
The carrier fixing member may be fixed to the bending member with an adhesive. In this case, an adhesive is interposed between the fixed curved surface of the carrier fixing member and the concave curved surface of the bending member.

  With this configuration, the carrier fixing member can be stably fixed to the bending member using the fixing force of the adhesive.

(6)
The bending member may include a partition portion that partitions the inside of the conduit and has a hole. In this case, you may have a deletion part from which a part of curved part was deleted.

  With this configuration, when installed in a pipeline, the pipeline space above the partition can function as a flow rate securing unit, and the pipeline space below the partition as a purification unit. Furthermore, the provision of the deletion portion facilitates the carrier fixing operation in the work space that is narrowed by the partitioning portion when the in-pipe purification apparatus is manufactured.

(7)
The bending member may include a partition portion that partitions the inside of the conduit and has a hole. In this case, the bending member and the partition portion may be independent members.

  In this configuration, since there is no need to provide a carrier fixing work deletion portion like the above (6) in-pipe purification device, the bending member itself is hardly deformed.

(8)
In the in-pipe purification apparatus according to (6) or (7), the fixing portion of the carrier fixing member may have a fixing surface fixed to the partition portion of the bending member.

  According to this configuration, the portion used for fixing the carrier fixing member is secured not only by the fixed curved surface but also by the fixing surface, so that more stable fixing is possible.

(9)
In a cross-sectional view perpendicular to the axis of the pipeline when installed in the pipeline, a pair of carriers may be disposed at positions facing each other with respect to a straight line connecting the lowest point of the pipeline and the axis.

  With this configuration, for example, in the in-pipe purification apparatus that does not have the partition part (7), the flow rate in the lower part of the pipe line is secured when the flow rate is small, and the purification function by the carrier is exhibited when the flow rate is large. Can do. For example, in the in-pipe purification apparatus having the partition part (7), the carrier fixing work in the work space in the curved member narrowed by the partition part is facilitated when the in-pipe purification apparatus is manufactured.

(10)
The in-pipe purification system according to the present invention is installed in the pipe so as to extend in the axial direction of the pipe and the pipe. And a device.

  With this configuration, since the carrier is stably fixed to the in-pipe purification device via the carrier fixing member, the carrier is not easily peeled off during use and maintenance, and the in-pipe purification system suitable for long-term use Become.

1 is a partially cutaway view schematically showing an in-pipe purification system using the in-pipe purification device of the first embodiment. It is a typical external appearance perspective view of the in-pipe purification apparatus (part) of FIG. It is the typical perspective view which showed the principal part containing the carrier fixing member of the in-pipe purification apparatus (part) of FIG. It is typical sectional drawing at the time of cut | disconnecting in the surface containing the IV-IV line | wire of FIG. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is a typical sectional view of the in-pipe purification device of a 2nd embodiment. FIG. 7 is a schematic external perspective view of the carrier fixing member of FIG. 6. It is a typical sectional view of the in-pipe purification device of a 3rd embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is a typical sectional view of the in-pipe purification device of a 4th embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is a typical sectional view of the in-pipe purification device of a 5th embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is typical sectional drawing of the purification apparatus in a pipe line of 6th Embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is typical sectional drawing of the purification apparatus in a pipe line of 7th Embodiment. FIG. 17 is a schematic external perspective view of the carrier fixing member of FIG. 16. It is a typical sectional view of the in-pipe purification device of an 8th embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is typical sectional drawing of the purification apparatus in a pipe line of 9th Embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is a typical sectional view of the in-pipe purification device of a 10th embodiment. It is a typical sectional view of the in-pipe purification device of an 11th embodiment. It is a typical external appearance perspective view of the carrier fixing member of FIG. It is a typical sectional view of the in-pipe purification device of a 12th embodiment. FIG. 26 is a schematic external perspective view of the carrier fixing member of FIG. 25. It is a typical sectional view of the in-pipe purification device of a 13th embodiment. It is a typical external appearance perspective view of the in-pipe purification apparatus of 14th Embodiment. It is typical sectional drawing at the time of cut | disconnecting in the surface containing the XXIX-XXIX line | wire of FIG. It is a typical sectional view of the in-pipe purification device of the 1st modification. It is a typical sectional view of the in-pipe purification device of the 2nd modification. It is typical sectional drawing of the purification apparatus in a pipe line of a 3rd modification. It is a typical sectional view of the in-pipe purification device of the 4th modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same elements are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[First Embodiment]
FIG. 1 is a partially cutaway view schematically showing an in-pipe purification system using the in-pipe purification device of the first embodiment. FIG. 2 is a schematic external perspective view of the in-pipe purification device (part) of FIG. FIG. 3 is a schematic perspective view showing a main part including a carrier fixing member of the in-pipe purification apparatus (part) of FIG. FIG. 4 is a schematic cross-sectional view when cut along a plane including the IV-IV line in FIG. 2. In the following, for the sake of convenience, the upward direction in FIG. 4 will be described as being upward, and the downward direction being downward. These directions do not necessarily refer to the absolute direction at the time of manufacturing the in-pipe purification device, although they almost coincide with the absolute direction at the time of use of the in-pipe purification device.

[Basic configuration]
An in-pipe purification system 900 shown in FIG. 1 includes a pipe 910 and an in-pipe purification device 100 provided in the pipe 910. As shown in FIGS. 2 to 4, the in-pipe purification apparatus 100 includes a bending member 200, a carrier fixing member 300, and a carrier 400 that should carry microorganisms.

[Curved member]
The bending member 200 is a long body having a certain cross-sectional shape that extends in the axial direction of the pipe 910 (see FIG. 1). The length of the bending member 200 in the axial direction corresponds to the length of the conduit 910. (In FIGS. 2 and 3, a part of this elongated body is displayed for convenience.) As shown in FIGS. 2 and 4, the bending member 200 includes a bending portion 210 and a partition portion 250. Is done. The bending portion 210 and the partition portion 250 are integrally formed. As shown in FIG. 4, the cross-sectional shape of the bending member 200 is line symmetric with respect to a straight line passing through the axis O of the pipe 910 and the lowest point of the pipe 910.

As shown in FIG. 4, the bending portion 210 has a concave curved surface 211 and a convex curved surface 212. Both the concave curved surface 211 and the convex curved surface 212 have a circular arc shape in cross section, and form a curved plate shape. A carrier 400 is fixed to the concave curved surface 211 via a carrier fixing member 300 (described later). The convex curved surface 212 is along a part of the inner wall surface of the pipe 910. Accordingly, the bending member 200 can be installed along the inner wall surface of the pipe 910. Further, the bending portion 210 has a deletion portion 215 in the vicinity of the lowest point of the duct 910. The deletion part 215 is formed over the entire extending direction of the bending member 200. As a result, the carrier 400 can be disposed from the missing portion 215 to the inside of the bending member 200, so that the carrier 400 is easily disposed.
Further, a locking portion 216 for locking the carrier fixing member 300 (described later) is formed in the deletion portion 215 of the bending portion 210.

  The partition part 250 is a deformed plate-like perforated member in which water-permeable holes 254 (described later) are formed. As shown in FIG. 4, when the in-pipe purification device 100 is provided in the pipe 910, the partition unit 250 divides the space in the pipe 910 into a lower purification unit 911 and an upper flow rate securing unit 915. And divide into The partition part 250 has a flow velocity securing part 251 on the symmetry axis, and a pair of plane parts 253 and a pair of inclined parts 255 are formed in this order from the side closer to the symmetry axis to the far side. The pair of flat portions 253 and the pair of inclined portions 255 are respectively arranged in parallel with the extending direction of the bending member 200.

  As shown in FIG. 4, the flow velocity securing part 251 constituting the lowest part of the central part of the partition part 250 constitutes the lowest part of the central part of the partition part 250, and its cross-sectional shape is convex downward. Is curved. With such a curved shape, a flow rate during a small amount of drainage in the pipeline is ensured.

  As shown in FIG. 4, a water-permeable hole 254 is formed in the flat portion 253. The water permeable hole 254 discharges the drainage to the purification unit 911 when the drainage in the flow rate securing unit 915 exceeds the capacity of the flow rate securing unit 251. A plurality of water permeable holes 254 are provided along the extending direction of the bending member 200 (see FIG. 1). Thereby, water permeability is imparted to the bending member 200. In addition, since the flat portion 253 is flat in the horizontal direction, the workability of drilling the water permeable holes 254 is good during manufacturing.

  As shown in FIG. 4, the inclined portion 255 is formed so as to rise from the flat portion 253 toward the inner wall of the duct 910 and gradually rise along the inner wall surface. Thereby, it is easy to guide the waste water in the flow rate securing unit 915 to the purification unit 911, and it is easy to prevent clogging between the partition unit 250 and the inner wall of the pipe line 910. In the present embodiment, the shape of the inclined portion 255 is flat, but a curved shape that continues smoothly from the flat portion 253 so as to protrude downward from the flat surface of the inclined portion 255 shown in FIG. It may have a curved slope.

  When the bending portion 210 and the partition portion 250 are configured as described above, the bending member 200 is provided in the conduit 910 as shown in FIG. 4, rather than the center of the inner space of the conduit 910. It is formed to occupy a part of the lower side. That is, the uppermost point of the bending member 200 is formed so as to be positioned below the horizontal position of the axis O of the pipe 910 with a drop E therebetween. By separating the head E, installation in the pipe 910 is facilitated.

The bending member 200 can be made of resin. Examples of the resin include thermoplastic resins such as vinyl chloride resins and olefin resins, and thermosetting resins such as epoxy resins and unsaturated polyester resins. The resin may be in the form of a composite material, that is, FRP (fiber reinforced plastic) reinforced with a fiber material such as glass fiber or carbon fiber.
For the bending member 200, a manufacturing method corresponding to the type of resin is selected. For example, it can be manufactured by extrusion molding of a thermoplastic resin. In this case, the outlet shape can be manufactured by extrusion using a mold having the same cross-sectional shape as that of the bending member 200. In addition, for example, the exit shape is manufactured by extruding using a mold having a closed cross section composed of a curved portion 210 having no deletion portion 215 and a partition portion 250, and then forming the deletion portion 215 by notching. Alternatively, extrusion may be performed using a mold having an annular exit shape, and thereafter, forming into a closed cross-sectional shape constituted by the curved portion 210 and the partition portion 250 without the deletion portion 215, and the deletion portion 215 is performed. You may manufacture by performing notch formation. For example, in the case of a thermosetting resin and FRP, it can be produced by a hand lay-up method, a pultrusion method, or the like.

[Carrier fixing member]
As shown in FIGS. 2 to 4, the carrier fixing member 300 is fixed to the concave curved surface 211 of the bending portion 210 of the bending member 200. In the present embodiment, as shown in FIGS. 3 to 5, the carrier fixing member 300 includes a holding part 310 and a fixing part 320. The holding part 310 and the fixing part 320 are integrally formed.

  As shown in FIGS. 3 and 4, the holding portion 310 is formed so that the cross section becomes an open cross section having a deformed portion rectangular shape, and at least a part of the outer surface of the carrier 400 (in this embodiment, the upper surface and Covering both the left and right side surfaces contributes to holding the carrier 400.

  The carrier fixing member 300 is fixed at a position where the height N of the narrowest portion in the purification unit 911 space can be secured. It is preferable from the viewpoint of preventing clogging between the carrier fixing member 300 and the partition part 250 that the narrowest part in the purification part 911 space secures the height N.

The depth of the holding part 310 is set as appropriate from the viewpoint of favorably holding the carrier 400, securing the exposed portion of the surface of the carrier 400, and the like. In the present embodiment, the depth is constituted by 4% of the diameter of the inner periphery of the conduit 910.
The carrier fixing member 300 may have the same depth as the entire depth.

The fixing portion 320 contributes to fixing the carrier fixing member 300 to the bending member 200. The fixed part 320 extends farther from the axis of symmetry than the holding part 310 and has a fixed curved surface 321 and a fixed surface 325.
Among these, the fixed curved surface 321 has a shape along the concave curved surface 211 of the bending portion 210 of the bending member 200 and is fixed in contact with the concave curved surface 211. By providing the fixed curved surface 321, a sufficient contact area with the concave curved surface 211 can be secured.
The fixed surface 325 has a shape along the partition portion 250 (in the present embodiment, near the boundary between the flat portion 253 and the inclined portion 255) of the bending member 200, and is fixed by being in contact with the partition portion 250 and being fixed. The fixing by the curved surface 321 is assisted.
Both the fixed curved surface 321 and the fixed surface 325 are fixed to the surface of the bending member 200 via an adhesive.

  As shown in FIGS. 4 and 5, the carrier fixing member 300 includes a holding protrusion 311 that protrudes toward the carrier 400 on the holding portion 310. The holding protrusion 311 holds the carrier 400 more stably by biting into the carrier 400 and pressing it. In the present embodiment, the holding protrusion 311 has a quadrangular pyramid shape, but may have any shape as long as it can be cut into the carrier 400, and has a tapered portion (for example, a triangular prism or a cone). It is preferable.

  As shown in FIGS. 4 and 5, the carrier fixing member 300 has a locking portion 316 at one end of the holding portion 310. As shown in FIG. 4, the locking portion 316 is locked to the locking portion 216 of the deletion portion 215 of the bending member 200, so that the carrier fixing member 300 can be more stably fixed to the bending member 200. it can. The locking portion 316 may also be fixed to the locking portion 216 via an adhesive.

  In the axial direction of the pipe line 910, the location and interval at which the carrier fixing member 300 is provided are not particularly limited. For example, with respect to one pipe line 910, you may provide in two places of the axial direction both ends, three places of the said both ends and center part, or more places.

  The carrier fixing member 300 can be made of resin. Examples of the resin include thermoplastic resins such as vinyl chloride resins and olefin resins, and thermosetting resins such as epoxy resins and unsaturated polyester resins. The resin may be in the form of a composite material, that is, FRP (fiber reinforced plastic) reinforced with a fiber material such as glass fiber or carbon fiber. The carrier fixing member 300 may be made of the same material as the bending member 200 or may be different. The carrier fixing member 300 can be manufactured by injection molding. In the case of FRP, it can be produced by a hand lay-up method, a resin transfer molding method (RTM) method or the like.

  The carrier fixing member 300 is fixed to the bending member 200 by using an adhesive between the fixed curved surface 321 and the concave curved surface 211. The adhesive can be appropriately determined by those skilled in the art in consideration of the material of the bending member 200 and the material of the carrier fixing member 300. For example, a rubber adhesive mainly composed of styrene-butadiene, a solvent-based adhesive, and the like can be given.

[Carrier]
The carrier 400 is a wide elongated body extending in the axial direction of the pipe 910 (see FIG. 1). The length of the carrier 400 in the axial direction corresponds to the length of the conduit 910. As the carrier 400, a structure having a large specific surface area is used without particular limitation. For example, a porous material (for example, an inorganic porous body, an inorganic foam, a resin foam, etc.), a fibrous material (for example, a nonwoven fabric, a woven fabric, a single fiber body, a net-like body, etc.), a layered material (for example, a sheet laminate) Etc.). The fine pores of the porous material are preferably continuous pores. In the present embodiment, a resin foam is used. Examples of the resin include olefin resins (particularly polyethylene), urethane resins, vinyl chloride resins, acrylic resins, and the like.

  The shape of the carrier 400 may be any shape that can be held by the carrier fixing member 300, and is a long body having a rectangular cross section in the present embodiment. In this embodiment, since the carrier 400 is a foam resin, the size of the cross-sectional shape of the carrier 400 may be designed to be slightly larger than the inside of the holding portion 310 of the carrier fixing member 300. In this case, when the carrier 400 is held by the holding portion 310 of the carrier fixing member, the carrier 400 is contracted and deformed in the bending holding portion 310, so that the carrier 400 is stably held by the holding portion 310. In addition, it can fix more stably by interposing an adhesive agent between the carrier 400 and the carrier fixing member 300.

  For example, after the carrier 400 is set on the holding portion 310 of the carrier fixing member 300 from the lower side, the carrier curved surface 321 of the carrier fixing member 300 is grounded to the concave curved surface 211 of the curved member 200, whereby the carrier fixing member 300 is And can be stably fixed to the bending member 200. In the present embodiment, it is possible to fix more stably by using an adhesive between the carrier 400 and the bending member 200 at the place where the carrier fixing member 300 is provided. Further, it may be more stably fixed by using an adhesive between the carrier 400 and the bending member 200 at a place where the carrier fixing member 300 is not provided.

  The size of the carrier 400 in the conduit 910 (width w and height h in FIG. 4) is appropriately determined in consideration of the purification efficiency and the size allowed for the carrier fixing member 300 in the purification unit 911. can do. In the present embodiment, the width w is 10% of the inner peripheral length of the conduit 910, and the height h is 2% of the inner peripheral length of the conduit 910.

  Within the pipe 910, the carrier 400 is disposed to face the surface connecting the axis O and the lowest position of the pipe 910. The arrangement position of the carrier 400 in the pipe line 910 can be determined in consideration of the purification efficiency and the like. For example, the separation distance i of the carrier 400 may be disposed so as to be 10% or more and 40% or less of the inner circumference of the pipe 910. The separation distance i being equal to or greater than the lower limit is that the flow rate in the purification unit 911 is ensured even when the water level of the purification unit 911 is low, the carrier 400 is brought into contact with air, and clogging is prevented. From the viewpoint of obtaining good purification efficiency, the carrier 400 is effectively brought into contact with the waste water when the water level rises.

[Other Embodiments]
Hereinafter, in the second to seventh embodiments having the deformed shape of the carrier fixing member 300, the eighth and ninth embodiments having the deformed shape of the holding projection 311, and the modified mode of the fixing mode of the carrier fixing member 300. A tenth embodiment to a thirteenth embodiment and a fourteenth embodiment having a deformed shape of the deletion portion 215 will be described. In these other embodiments, differences from the first embodiment will be mainly described, and description of the same points will be omitted. In the present invention, the first embodiment and other embodiments may be arbitrarily combined.

[Second Embodiment]
FIG. 6 is a schematic cross-sectional view of the in-pipe purification apparatus of the second embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 7 is a schematic external perspective view of the carrier fixing member of FIG. 6 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100a shown in FIG. 6 includes a bending member 200a, a carrier fixing member 300a, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 6 and 7, the carrier fixing member 300 a includes a holding part 310 a and a fixing part 320 a that are integrally formed, and is formed so that the cross section becomes an open cross section of a deformed portion rectangular shape.

  The holding part 310a holds the outer surface of the carrier 400 (in this embodiment, the upper surface and the right side surface) so as to cover it. The fixing part 320a is provided below the holding part 310a, covers a part of the lower surface of the carrier 400, and has a fixed curved surface 321a having a shape along the concave curved surface 211a of the bending part 210a of the bending member 200a.

  For example, after the carrier 400 is set so as to be sandwiched between the holding portion 310a and the fixing portion 320a of the carrier fixing member 300a, the fixed curved surface 321a of the carrier fixing member 300a is grounded to the concave curved surface 211a of the bending member 200a. Thus, it can be stably fixed to the bending member 200a via the carrier fixing member 300a.

  In this embodiment, the holding protrusion 311 is formed in the same manner as in the first embodiment. However, the holding protrusion 311 is provided on the fixing portion 320a and is formed so as to protrude from the fixing portion 320a to the carrier 400 side. May be. Further, the holding protrusion 311 may be provided on both the holding portion 310a and the fixing portion 320a. The same applies to other embodiments described later.

[Third Embodiment]
FIG. 8 is a schematic cross-sectional view of the in-pipe purification apparatus of the third embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 9 is a schematic external perspective view of the carrier fixing member of FIG. 8 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100b shown in FIG. 8 includes a bending member 200a, a carrier fixing member 300b, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 8 and 9, the carrier fixing member 300b includes an integrally formed holding portion 310b and a fixing portion 320b, and is formed so that the cross section becomes an open cross section having a deformed portion rectangular shape.

  The holding portion 310b holds the outer surface of the carrier 400 (in this embodiment, the upper surface and one side surface) so as to cover it. A plurality of holding protrusions 311 are formed on the holding portion 310b, and the carrier 400 is held more stably. The fixing portion 320b is provided below the holding portion 310b, and has a fixed curved surface 321b that covers the entire lower surface of the carrier 400 and has a shape along the concave curved surface 211a of the bending member 200a.

  For example, the carrier 400 is set so as to push and spread between the holding portion 310b and the fixing portion 320b of the carrier fixing member 300b, and then sandwiched therebetween, and then the fixing curved surface 321b of the carrier fixing member 300b is recessed in the bending member 200a. By grounding to the curved surface 211a, it can be stably fixed to the bending member 200a via the carrier fixing member 300b.

[Fourth Embodiment]
FIG. 10 is a schematic cross-sectional view of the in-pipe purification apparatus of the fourth embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 11 is a schematic external perspective view of the carrier fixing member of FIG. 10 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100c shown in FIG. 10 includes a bending member 200a, a carrier fixing member 300c, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 10 and 11, the carrier fixing member 300c includes a holding part 310c and a fixing part 320c that are integrally formed, and the holding part 310c and the fixing part 320c are formed so as to form a closed cross section. Yes.

  The holding portion 310c holds the outer surface of the carrier 400 (in the present embodiment, the upper surface and both the left and right side surfaces) so as to cover it. The fixing portion 320c is provided below the holding portion 310c, and has a fixed curved surface 321c that covers the entire lower surface of the carrier 400 and has a shape along the concave curved surface 211a of the bending member 200a. Although the holding protrusion is not formed on the holding portion 310c, the carrier 400 is held from the entire outer surface by the closed cross-sectional structure of the holding portion 310c and the fixing portion 320c, so that stable holding is possible. .

  For example, after the carrier 400 is set so as to be screwed into the carrier fixing member 300c, the fixing curved surface 321c of the carrier fixing member 300c is grounded to the concave curved surface 211a of the bending member 200a, thereby allowing the carrier fixing member 300c to pass through the carrier fixing member 300c. Thus, it can be stably fixed to the bending member 200a.

[Fifth Embodiment]
FIG. 12 is a schematic cross-sectional view of the in-pipe purification apparatus of the fifth embodiment, and corresponds to FIG. 4 of the first embodiment. 13 is a schematic external perspective view of the carrier fixing member of FIG. 12, and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100d shown in FIG. 12 includes a bending member 200a, a carrier fixing member 300d, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 12 and 13, the carrier fixing member 300d includes a holding portion 310d and a fixing portion 320d.

  The holding part 310d and the fixing part 320d are member pieces independent of each other, and are formed so as to form a closed section having a deformed rectangular shape by being combined. The holding unit 310d holds the outer surface of the carrier 400 (in this embodiment, only the upper surface only) so as to cover it. A plurality of holding protrusions 311 are formed on the holding portion 310d, and the carrier 400 is held more stably. The fixed portion 320d is formed in a shape that covers the left and right side surfaces of the outer surface of the carrier 400 and receives the lower surface, and has a fixed curved surface 321d that is shaped along the concave curved surface 211a of the bending member 200a.

  One end portions of the holding portion 310d and the fixed portion 320d are pivotally attached to each other so as to be freely rotatable (in the direction of the arrow R), and the other end portions are formed so as to be latched with each other. As a result, the carrier fixing member 300d is freely in a closed state shown in FIG. 13A and an open state shown in FIG. 13B. For example, the carrier 400 is set with the carrier fixing member 300d open, and after closing, the fixed curved surface 321d of the carrier fixing member 300d is grounded to the concave curved surface 211a of the curved member 200a, thereby allowing the carrier fixing member 300d to pass through the carrier fixing member 300d. Thus, it can be stably fixed to the bending member 200a.

[Sixth Embodiment]
FIG. 14 is a schematic cross-sectional view of the in-pipe purification apparatus of the sixth embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 15 is a schematic external perspective view of the carrier fixing member of FIG. 14 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100e shown in FIG. 14 includes a bending member 200a, a carrier fixing member 300e, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 14 and 15, the carrier fixing member 300e includes a holding part 310e and a fixing part 320e.

  Each of the holding portion 310e and the fixing portion 320e is a curved, independent member piece, and is formed so as to constitute a leaf-shaped closed cross section when combined. The holding portion 310e is configured to have a curved cross section that is convex upward, and holds the outer surface of the carrier 400 (in this embodiment, at least the upper surface). The fixing portion 320e is provided below the holding portion 310e, and has a fixed curved surface 321e that covers at least the entire lower surface of the carrier 400 and has a shape along the concave curved surface 211a of the bending member 200a. Although the holding protrusion is not formed on the holding portion 310e, the carrier 400 is deformed and held so as to be crushed from above by the curved shape of the holding portion 310e, and thus stable holding is possible.

  One end portions of the holding portion 310e and the fixing portion 320e are pivotably attached to each other (in the direction of the arrow R), and the other end portions are formed so as to be locked with each other. The carrier 400 is set, for example, with the carrier fixing member 300e open, and after closing, the fixed curved surface 321e of the carrier fixing member 300e is grounded to the concave curved surface 211a of the curved member 200a, thereby allowing the carrier fixing member 300e to pass through the carrier fixing member 300e. Thus, it can be stably fixed to the bending member 200a.

[Seventh Embodiment]
FIG. 16 is a schematic cross-sectional view of the in-pipe purification apparatus of the seventh embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 17 is a schematic external perspective view of the carrier fixing member of FIG. 16 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100f shown in FIG. 16 includes a bending member 200a, a carrier fixing member 300f, and a carrier 400. The bending member 200a is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed. As shown in FIGS. 16 and 17, the carrier fixing member 300f includes a holding portion 310f and a fixing portion 320f.

  Each of the holding portion 310f and the fixing portion 320f is a curved, completely independent member piece, and is formed so as to constitute a deformed rectangular closed cross section when combined. The holding portion 310f holds the outer surface of the carrier 400 (in this embodiment, only the upper surface only) so as to cover it. A plurality of holding protrusions 311 are formed on the holding portion 310f to hold the carrier 400 more stably. The fixing portion 320f is formed in a shape that covers both the left and right sides of the outer surface of the carrier 400 and receives the lower surface, and has a fixed curved surface 321f that is shaped along the concave curved surface 211a of the bending member 200a.

  Locking portions are formed on the holding portion 310f and the fixing portion 320f, respectively. Each locking part is formed in a shape that can be fitted and locked to each other. The holding portion 310f and the fixing portion 320f constitute a closed carrier fixing member 300f when the locking portion is fitted and locked. If the locking part is detachable, the holding part 310f and the fixing part 320f are freely closed and open. The carrier 400 is set, for example, with the carrier fixing member 300f open, and after closing, the fixed curved surface 321f of the carrier fixing member 300f is grounded to the concave curved surface 211a of the curved member 200a, thereby allowing the carrier fixing member 300f to pass through the carrier fixing member 300f. Thus, it can be stably fixed to the bending member 200a.

[Eighth Embodiment]
FIG. 18 is a schematic cross-sectional view of the in-pipe purification apparatus of the eighth embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 19 is a schematic external perspective view of the carrier fixing member of FIG. 18 and corresponds to FIG. 5 of the first embodiment.

  18 includes a bending member 200, a carrier fixing member 300g, and a carrier 400g. The carrier fixing member 300g shown in FIG. 19 is the same as the carrier fixing member 300 of the first embodiment except that the shape of the holding projection 311g is a cylindrical shape. The present invention can be similarly applied to the third, fifth, and seventh embodiments and the first to fourth modifications described later, instead of the holding protrusion 311.

  A hole having a circular cross section corresponding to the shape of the holding projection 311g is formed in the carrier 400g. The cylindrical holding protrusion 311g is fitted into the hole of the carrier 400g, whereby the carrier 400g is stably held by the carrier fixing member 300g.

[Ninth Embodiment]
FIG. 20 is a schematic cross-sectional view of the in-pipe purification apparatus of the ninth embodiment, and corresponds to FIG. 4 of the first embodiment. FIG. 21 is a schematic external perspective view of the carrier fixing member of FIG. 20 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100h shown in FIG. 20 includes a bending member 200, a carrier fixing member 300h, and a carrier 400h. The carrier fixing member 300h shown in FIG. 21 is the same as the carrier fixing member 300 of the first embodiment except that the shape of the holding projection 311h is different. However, the holding projection 311h has first, second, third, and fifth portions. The seventh embodiment and the first to fourth modifications described later can be similarly applied instead of the holding protrusion 311.

  The holding protrusion 311h is configured as a pair of plate-like protrusions. The carrier 400h is provided with a hole having a rectangular cross section corresponding to the shape of the holding protrusion 311h. By inserting the holding protrusion 311h along the hole wall of the carrier 400h, the carrier 400h is stably held by the carrier fixing member 300h.

[Tenth embodiment]
FIG. 22 is a schematic cross-sectional view of the in-pipe purification apparatus of the tenth embodiment, and corresponds to FIG. 4 of the first embodiment.

  The in-pipe purification apparatus 100i shown in FIG. 22 includes a bending member 200i, a carrier fixing member 300d, and a carrier 400. The bending member 200i is the same as the bending member 200 of the first embodiment, except that the locking portion 216 is not formed and the support portion 218i protrudes from the concave curved surface 211i of the bending portion 210i.

  The support portions 218i are a pair of protrusions having a symmetrical shape with respect to the target axis, and are arranged in parallel with the extending direction of the bending member 200i. The pair of support portions 218i are formed at positions where the pair of carriers 400 are disposed with a predetermined separation distance. At the position where the carrier fixing member 300d is fixed, the support portion 218i supports the lower end surface 318d of the carrier fixing member 300d by hitting it. Thereby, the adhesion between the fixed curved surface 321d and the concave curved surface 211i can be further stabilized.

  In a position where the carrier fixing member 300d is not fixed and the carrier 400 is exposed, the support portion 218i may be supported by bumping one end of the carrier 400. Accordingly, the carrier 400 can be stably disposed even if the interval in which the carrier fixing member 300d is provided in the extending direction of the bending member 200i is widened. Therefore, the number of carrier fixing members 300d can be reduced and the exposed area of the carrier 400 can be increased.

  In the present embodiment, the carrier fixing member 300d of the fifth embodiment has been described as the carrier fixing member. However, the carrier fixing members 300, 300a, 300b, 300c, 300e, and the like of the first to ninth embodiments described above are described. 300f, 300g, 300h, etc. may be applied instead.

[Eleventh embodiment]
FIG. 23 is a schematic cross-sectional view of the in-pipe purification apparatus of the eleventh embodiment, and corresponds to FIG. 4 of the first embodiment. 24 is a schematic external perspective view of the carrier fixing member of FIG. 23 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100j shown in FIG. 23 includes a bending member 200j, a carrier fixing member 300j, and a carrier 400. The bending member 200j shown in FIG. 23 is the bending member according to the first embodiment, except that the locking portion 216 is not formed and the support portions 218j and 218j ′ protrude from the concave curved surface 211j of the bending portion 210j. The same as 200. The carrier fixing member 300j shown in FIG. 24 is the same as the carrier fixing member 300c of the fourth embodiment, except that the supported portions 308j and 308j 'are protruded.

  The support portion 218j is a pair of ridges having a symmetrical shape with respect to the target axis, and is arranged in parallel with the extending direction of the bending member 200j. The pair of support portions 218j are formed at positions where the pair of carriers 400 are disposed with a predetermined separation distance. Further, the support portion 218j is configured to be fitted to a supported portion 308j that protrudes from the lower end surface 318j of the carrier fixing member 300j. The support portion 218j supports the carrier fixing member 300j by fitting and locking the supported portion 308j.

  The support portion 218j 'is also a pair of protrusions having a symmetrical shape with respect to the target axis, and is arranged in parallel with the extending direction of the bending member 200j. Each of the pair of support portions 218j ′ is formed at a position spaced from the support portion 218j by a distance corresponding to a predetermined width w of the carrier 400. Further, the support portion 218j 'is configured to be fitted with a supported portion 308j' protruding from the upper end surface 318j 'of the carrier fixing member 300j. The support portion 218j 'supports the carrier fixing member 300j in an auxiliary manner by fitting and locking the supported portion 308j'.

  Further, the carrier 400 may be supported between the support portions 218j and 218j 'at a position where the carrier fixing member 300j is not fixed and the carrier 400 is exposed. Accordingly, the carrier 400 can be stably disposed even when the interval for providing the carrier fixing member 300j in the extending direction of the bending member 200j is widened. Therefore, the number of carrier fixing members 300j can be reduced and the exposed area of the carrier 400 can be increased.

  In the present embodiment, the support portion 218j and the supported portion 308j, and the support portion 218j 'and the supported portion 308j' are structurally configured to be detachable. Therefore, no adhesive is required between the concave curved surface 211j of the curved portion 210j and the fixed curved surface 321j of the carrier fixing member 300j. However, in the present embodiment, it is not particularly excluded to use an adhesive supplementarily for fixing the carrier fixing member 300j to the curved portion 210j.

  In this embodiment, the shape of the carrier fixing member 300j is based on the shape of the carrier fixing member 300c of the fourth embodiment. However, the carrier fixing members 300 and 300d of the first, fifth to ninth embodiments described above. , 300e, 300f, 300g, 300h, or the like.

[Twelfth embodiment]
FIG. 25 is a schematic cross-sectional view of the in-pipe purification apparatus of the twelfth embodiment, and corresponds to FIG. 4 of the first embodiment. 26 is a schematic external perspective view of the carrier fixing member of FIG. 25 and corresponds to FIG. 5 of the first embodiment.

  The in-pipe purification apparatus 100k shown in FIG. 25 includes a bending member 200k, a carrier fixing member 300k, and a carrier 400. The bending member 200k shown in FIG. 25 is not formed with the locking portion 216, and the bending member 200 of the first embodiment is provided with a fitting protrusion 213k protruding from the concave curved surface 211k of the bending portion 210k. Is the same. The carrier fixing member 300k shown in FIG. 26 is the same as the carrier fixing member 300c of the fourth embodiment except that the fitting concave portion 323k is formed on the fixed curved surface 321k.

  A plurality of pairs of fitting protrusions 213k are arranged in parallel with the extending direction of the bending member 200k. The fitting protrusion 213k is formed in a shape that can be fitted and locked with the fitting recess 323k of the carrier fixing member 300k. Therefore, the carrier fixing member 300k is fixed by fitting and locking the fitting recess 323k to the fitting protrusion 213k of the bending member 200k.

  In the present embodiment, the fitting ridges 213k and the fitting recesses 323k are structurally configured to be detachable. Therefore, no adhesive is required between the concave curved surface 211k of the curved member 210k and the fixed curved surface 321k of the carrier fixing member 300k. However, in the present embodiment, it is not particularly excluded to use an adhesive supplementarily for fixing the carrier fixing member 300k to the bending member 210k.

  As a modification of the present embodiment, a fitting groove is engraved on the bending member 200k, a fitting protrusion is provided on the carrier fixing member 300k, and the fitting groove and the fitting protrusion are fitted. The carrier fixing member 300k may be fixed to the bending member 200k by being locked.

  In this embodiment, the shape of the carrier fixing member 300k is based on the shape of the carrier fixing member 300c of the fourth embodiment. However, the carrier fixing members 300 and 300d of the first, fifth to ninth embodiments described above. , 300e, 300f, 300g, 300h, or the like.

[Thirteenth embodiment]
FIG. 27 is a schematic cross-sectional view of the in-pipe purification apparatus of the thirteenth embodiment, and corresponds to FIG. 4 of the first embodiment.

  The in-pipe purification apparatus 100l shown in FIG. 27 includes a bending member 200l, a carrier fixing member 300l, and a carrier 400l. The carrier fixing member 300l is a resin screw. The bending member 200l is the same as the bending member 200 of the first embodiment except that the locking portion 216 is not formed and has a screw hole. The screw holes of the bending member 200l are formed so that the screw threads of the carrier fixing member 300l can be screwed together. Furthermore, screw holes are also formed in the carrier 400l.

  With such a configuration, the carrier 400l is fixed to the bending member 200l by the carrier fixing member 300l. In this embodiment, since the carrier fixing member 300l is mechanically fixed to the bending member 200l, an adhesive is not necessarily required. However, for stable fixation, an adhesive is interposed between the surface of the carrier 400l and the concave curved surface 211l of the curved portion 210l and / or between the carrier fixing member 300l and the screw hole wall of the curved portion 210l. Is preferred.

[Fourteenth embodiment]
FIG. 28 is a schematic external perspective view of the in-pipe purification apparatus of the fourteenth embodiment. 29 is a schematic cross-sectional view when cut along a plane including the line XXIX-XXIX in FIG. 28.
The in-pipe purification apparatus 100m shown in FIG. 28 includes a bending member 200m, a carrier fixing member 300, and a carrier 400 that should carry microorganisms. The bending member 200m includes a bending portion 210m and a partition portion 250.

  The in-pipe purification device 100m is basically the same as the in-pipe purification device 100 of the first embodiment, except that the shape of the deletion portion 215m provided in the bending portion 210m of the bending member 200m is different. However, the deletion part 215m can be similarly applied instead of the deletion part 215 of the other embodiment described above and the deletion part 215a of the second modified example described later (see FIG. 31 described later).

  The deletion portion 215m is not provided in the entire extending direction of the bending member 200m but is provided in a part of the extending direction, more specifically, the position where the carrier fixing member 300 is provided and the periphery thereof. Therefore, as shown in FIG. 28, the deletion part 215m includes an aspect in which the end of the bending part 210m is cut out and an aspect in which the bending part 210m is opened.

By providing the deletion part 215m as described above, as shown in FIG. 29, the other part in the extending direction of the bending member 200m has no deletion part in the bending part 210m, and a water-permeable hole is formed. In the part which is not, the curved part 210m and the partition part 250 form a closed cross-sectional structure. It is preferable that the bending member 200m has such a closed cross-sectional structure in that it is difficult to be deformed during manufacture and use.
Thus, since the bending member 200m has deformation resistance, it is allowed to be thinner.

[Modification]
Hereinafter, first to fourth modified examples having deformed shapes of the bending member 200 will be described. In these modified examples, differences from the above-described embodiment will be mainly described, and description of the same points will be omitted. In the following modifications, the carrier fixing member 300d according to the fifth embodiment is shown as a carrier fixing member, but the carrier fixing members 300a, 300b, 300c, 300e, 300f described above and those A possible variant of the carrier fixing member can be applied instead.

[First Modification]
FIG. 30 is a schematic cross-sectional view of the in-pipe purification apparatus of the first modification, and corresponds to FIG. 4 of the first embodiment. An in-pipe purification apparatus 100n shown in FIG. 30 includes a bending member 200n, a carrier fixing member 300d, and a carrier 400. The bending member 200n has a bending portion 210n and a partition portion 250n. The curved portion 210n and the partition portion 250n are members independent of each other. Further, fitting portions are formed on both side portions of the curved portion 210n and the partition portion 250n. That is, a pair of fitting portions are arranged in parallel in the extending direction of the bending member 200n in each of the bending portion 210n and the partition portion 250n. The fitting portion of the bending portion 210n and the fitting portion of the partition portion 250n are formed in shapes that can be fitted to each other.

  As described above, since the curved portion 210n and the partition portion 250n are members independent from each other, the carrier fixing member 300d can be installed on the curved portion 210n that is not fitted to the partition portion 250n. The curved portion 210n alone is excellent in workability because the concave curved surface 211n is exposed entirely without being shielded. Therefore, it is not necessary to provide the deletion portions 215 and 215m in the bending member 200n as in the above embodiment. However, from the viewpoint of positioning of the carrier fixing member 300d, material reduction, etc., it is not particularly excluded to provide the deletion portion 215m of the fourteenth embodiment type.

  The in-pipe purification apparatus 100n is preferable in that the bending member 200n does not have the first to thirteenth embodiment type deletions 215, and is difficult to deform during manufacture and use. Thus, since the bending member 200n has deformation resistance, it is allowed to be thinner.

  The shape of the bending portion 210n is the same as that of the bending portion 210a of the above embodiment except that it has a fitting portion and no missing portion, and the shape of the partition portion 250n has a fitting portion. Except this, it is the same as the partition part 250 of the above embodiment.

[Second Modification]
FIG. 31 is a schematic cross-sectional view of the in-pipe purification apparatus of the second modification, and corresponds to FIG. 4 of the first embodiment. The in-pipe purification apparatus 100p shown in FIG. 31 includes a bending member 200p, a carrier fixing member 300d, and a carrier 400. The bending member 200p has a bending portion 210a and a partition portion 250p that are integrally formed.

  The partition portion 250p has a curved shape having a single curved surface having a radius of curvature larger than the radius of the pipe line 910. Similar to the water-permeable hole 254 of the first to fourteenth embodiments, a water-permeable hole 254p is formed. The drop E from the horizontal position of the axis O of the uppermost point of the bending member 200p and the height N of the narrowest part of the purification unit 911 are also set in the same manner as in the above embodiment.

[Third Modification]
FIG. 32 is a schematic cross-sectional view of the in-pipe purification apparatus of the third modification, and corresponds to FIG. 4 of the first embodiment. The in-pipe purification apparatus 100q shown in FIG. 32 includes a bending member 200q, a carrier fixing member 300d, and a carrier 400. The bending member 200q is configured only by the bending portion 210q having an open lower portion, and does not have a partition portion as in the above embodiment. Therefore, the flow rate securing unit and the purification unit are not divided in the pipe line 910, and both the flow rate securing function and the purification function are exhibited in a single space in the pipe line 910.

  The carrier 400 is fixed to the concave curved surface 211q via the carrier fixing member 300d at both ends of the bending member 200q (that is, the bending portion 210q). Even if the amount of drainage is small, the carrier 400 takes a predetermined separation distance i (that is, 10% or more and 40% or less of the inner periphery of the pipe 910) as in the above-described embodiment. Since there are no obstacles in the lower part, a flow rate can be secured and the carrier 400 can be brought into contact with air. Further, by taking a predetermined separation distance i, clogging is preferably prevented, and when the water level rises, the carrier 400 can be effectively brought into contact with the waste water to obtain good purification efficiency.

  Further, since the bending member 200q occupies most of the inner periphery of the pipe line 910, specifically, 60% or more and 90% or less, the bending member 200q is stabilized in the pipe line 910 by utilizing the flexibility of the bending member 200q. Can be fixed. For example, the bending member 200q before being installed in the pipe 910 is formed so that the radius of curvature of the outer peripheral surface thereof is the same as or slightly larger than the radius of the pipe 910. When installing in the pipe 910, the bending member 200q is flexibly deformed by applying a load so that the radius of curvature of the outer peripheral surface thereof becomes smaller than the radius of the pipe 910, and the pipe 910 is in the deformed state. And the load is released in the pipe line 910. Thereby, since the bending member 200q resists the inner wall of the pipe line 910, it is stably fixed.

[Fourth Modification]
FIG. 33 is a schematic cross-sectional view of the in-pipe purification apparatus of the fourth modified example, and corresponds to FIG. 4 of the first embodiment. The in-pipe purification apparatus 100r shown in FIG. 33 includes a bending member 200r, a carrier fixing member 300d, and a carrier 400. The bending member 200r is composed only of the bending portion 210r whose upper portion is opened, and does not have a partition portion as in the above embodiment. Therefore, in the pipe line 910, it is not divided into a flow volume securing part and a purification | cleaning part, but it is the same as said 3rd modification by the point which demonstrates both a flow volume securing function and a purification | cleaning function in the single space in the pipe line 910. It is.

  The carrier 400 is fixed to the concave curved surface 211r via the carrier fixing member 300d at both ends of the bending member 200r (that is, the bending portion 210r). Even if the amount of drainage is small, the carrier 400 takes a predetermined separation distance i (that is, 10% or more and 40% or less of the inner periphery of the pipe 910) as in the above-described embodiment. Since there are no obstacles in the lower part, a flow rate can be secured and the carrier 400 can be brought into contact with air. Further, by taking a predetermined separation distance i, clogging is preferably prevented, and when the water level rises, the carrier 400 can be effectively brought into contact with the waste water to obtain good purification efficiency.

[Correspondence Relationship Between Each Part in Embodiment and Modification and Each Component in Claim]
The in-pipe purification devices 100, 100a,..., 100r in the embodiments and the modifications correspond to the “in-pipe purification device” in the claims, and the bending members 200, 200a, 200i,. The curved portions 210, 210a, 210i, ..., 210r correspond to "curved portions", the concave curved surfaces 211, 211a, 211i, ..., 211r correspond to "concave curved surfaces", and the missing portions 215, 215a , 215m corresponds to the “deletion part”, the partition parts 250, 250n, 250p correspond to the “partition part”, the water-permeable holes 254, 254p correspond to the “holes”, and the carrier fixing members 300, 300a,. 300h, 300j, 300k, and 300l correspond to “carrier fixing members”, the holding portions 310, 310a, to 310f correspond to “holding portions”, and the holding protrusions 311, 311g, and 311h correspond to “holding protrusions”. The fixed portions 320, 320a, to 320f correspond to “fixed portions”, the fixed curved surfaces 321, 321a, to 321f, 321j, and 321k correspond to “fixed curved surfaces”, and the carriers 400, 400g, 400h, and 400l represent “carriers”. The in-pipe purification system 900 corresponds to the “in-pipe purification system”, the pipe 910 corresponds to the “pipe”, and the axis O corresponds to the “axis of the pipe”.

  Preferred embodiments of the present invention are as described above, but the present invention is not limited to them, and various other embodiments are possible without departing from the spirit and scope of the present invention. Furthermore, the operations and effects described in this embodiment are merely examples, and do not limit the present invention.

100, 100a, ..., 100r In-pipe purification devices 200, 200a, 200i, ..., 200r bending members 210, 210a, 210i, ..., 210r bending portions 211, 211a, 211i, ..., 211r concave curved surfaces 215, 215a, 215m Deletion part 250, 250n, 250p Partition part 254, 254p Water-permeable hole 300, 300a, ..., 300h, 300j, 300k, 300l Carrier fixing member 310, 310a, ..., 310f Holding part 311, 311g, 311h Holding protrusion 320, 320a , ~ 320f Fixed part 321, 321a, ~, 321f, 321j, 321k Fixed curved surface 400, 400g, 400h, 400l Carrier 900 In-pipe purification system 910 Pipe O (center of pipe)

Claims (10)

An in-pipe purification device installed in a pipe,
A bending member including at least a bending portion having a curved surface along the inner wall surface of the pipe;
A carrier fixing member fixed to the concave curved surface of the curved portion;
A carrier for supporting microorganisms held by the carrier fixing member;
In-pipe purification device.   The carrier fixing member includes a holding portion that holds the carrier and a fixing portion that is fixed to the concave curved surface, and the fixing portion has a fixed curved surface that is along the concave curved surface and fixed to the concave curved surface. The in-pipe purification apparatus according to claim 1.   The in-pipe purification apparatus according to claim 1 or 2, wherein the carrier fixing member is provided with a holding projection that projects toward the carrier.   The in-pipe purification apparatus according to claim 2 or 3, wherein the holding part and the fixing part are independent member pieces.   The in-pipe purification apparatus according to any one of claims 2 to 4, wherein the carrier fixing member is fixed to the concave curved surface by an adhesive interposed between the fixed curved surface and the concave curved surface.   6. The bending member according to claim 1, wherein the bending member includes a partition part that partitions the inside of the pipe line and has a hole, and has a deletion part in which a part of the bending part is deleted. The in-pipe purification apparatus according to Item 1.   6. The bending member according to claim 1, wherein the bending member includes a partition portion that partitions the inside of the pipe line and has a hole, and the bending member and the partition portion are members independent of each other. The in-pipe purification apparatus according to Item 1.   The in-pipe purification apparatus according to claim 6 or 7, wherein the fixing portion of the carrier fixing member has a fixing surface fixed to the partition portion of the bending member.   When installed in the pipe, a pair of the carriers are arranged at positions facing each other with respect to a straight line connecting the lowest point of the pipe and the axis in a cross-sectional view perpendicular to the axis of the pipe. The in-pipe purification apparatus according to any one of claims 1 to 8. A pipeline,
The in-pipe purification device according to any one of claims 1 to 9, wherein the in-pipe purification device is installed in the pipe so as to extend in an axial direction of the pipe.
In-pipe purification system.

Images