AU2015291058A1

AU2015291058A1 - Pipeline interior purifying apparatus, and pipeline interior purifying system

Info

Publication number: AU2015291058A1
Application number: AU2015291058A
Authority: AU
Inventors: Yoshiharu Matsubara; Katsuo Matsuzaka
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2014-07-18
Filing date: 2015-07-17
Publication date: 2016-09-22
Also published as: CN106103356A; PH12016501771A1; JP6235718B2; WO2016009655A1; JPWO2016009655A1

Abstract

Provided are a pipeline interior purifying apparatus and a pipeline interior purifying system with which it is possible to purify sewage inexpensively and efficiently. In the pipeline interior purifying apparatus 100, 100a ... 100i according to the present invention, a microorganism carrier 330, 330a, 330b, a microorganism carrier 310, 310a ... 310g, and a microorganism carrier 320, 320a ... 320g are arranged facing each other; it is accordingly possible to maintain a purifying effect while ensuring the flow speed in the lowest portion P of a pipeline 200.

Description

DESCRIPTION

TITLE OF INVENTION: PIPELINE INTERIOR PURIFYING APPARATUS, AND PIPELINE INTERIOR PURIFYING SYSTEM

TECHNICAL FIELD

[0001]

The present invention relates to a pipeline interior purification apparatus and a pipeline interior purification system.

[0002]

Conventionally, sewage flows through a pipeline to a sewage treatment facility, and purification treatment of sewage is performed entirely at the sewage treatment facility. For that reason, in a sewage treatment facility, equipment expenses or equipment space in association with purifying equipment has been needed.

[0003]

In recent years, to reduce the burden on sewage treatment facilities, a method of purifying sewage by using microorganisms in the interior of pipeline has been proposed.

For example, Patent Literature 1 discloses a sewage purification apparatus for a pipeline, in which a membrane of a ceramic material containing an effective microorganisms is provided on the inner surface of the pipeline, and sewage is purified by being brought into contact with the effective microorganisms.

[0004]

Patent Literature 2 discloses a water purification apparatus for a pipeline, in which a water-permeable fixed bed in which microorganisms can settle is provided in the pipeline, and oxygen is supplied into the fixed bed even when the fixed bed is submerged, making it possible to facilitate the growth of aerobic microorganisms .

[0005]

Further, Patent Literature 3 discloses a method for effectively purifying sewage in which a fin is provided inside a pipeline of a pressure feeding pipe and a plurality of pipes are installed within the pressure feeding pipe, thereby enlarging an area in which sewage and microorganisms are brought into contact.

[0006]

Further, Patent Literature 4 discloses a pipeline interior purification apparatus which can purify sewage at low cost and high efficiency.

CITATION LIST PATENT LITERATURE

[0007]

Patent Literature 1: Japanese Patent Laid-Open No. 8-165704

Patent Literature 2: Japanese Patent Laid-Open No. 2010-024773

Patent Literature 3: Japanese Utility Model Laid-Open No. 6-24799

Patent Literature 4: International Publication No. 2013/17228 8A1

SUMMARY OF INVENTION TECHNICAL PROBLEM

[0008]

However, in the methods described in Patent Literatures 1 to 3, the area for retaining microorganisms is still not sufficient, and retaining microorganisms at a high density is difficult, thereby resulting in low purification efficiency.

Moreover, when oxygen supplying means is used, a problem existed in that equipment cost and construction cost increase. Further, it is required for a purification apparatus for a pipeline to sufficiently ensure flow-down performance of sewage, and prevent failure caused by stress that occurs during laying under the ground or the like.

Further, although the pipeline interior purification apparatus and the connection structure of the pipeline interior purification apparatus described in Patent Literature 4 can purify sewage at high efficiency, its structure is complicated so that many work man-hours are to be spent.

[0009]

It is an object of the present invention to provide a pipeline interior purification apparatus and a pipeline interior purification system, which can purify sewage at low lost and high efficiency while ensuring sufficient flow-down performance.

SOLUTION TO PROBLEM

[0010] (1) A pipeline purification apparatus according to one aspect is a pipeline interior purification apparatus to be installed in a pipeline, including: a curved-surface member, at least a part of a cross-section of the curved-surface member being formed along a curved surface of the pipeline; and a microorganism carrier formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member. The microorganism carrier when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

[0011]

In this case, since the microorganism carrier is formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member, it is possible to maintain the purifying effect by the microorganism carrier while ensuring a flow velocity in a lowermost part of the pipeline.

Since the microorganism carrier when installed in the pipeline is absent on the surface of the lowermost part of the pipeline, it is possible to ensure a flow velocity in the lowermost part of the pipeline.

Moreover, when the flow rate is low, the flow velocity will not be reduced, and when the flow rate is high, purification can be performed.

[0012] (2) A pipeline interior purification apparatus relating to a second invention may be the pipeline purification apparatus according to the one aspect, in which the curved-surface member when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

[0013]

In this case, since the pipeline interior purification apparatus becomes small with respect to the pipeline, it becomes easy to install the pipeline interior purification apparatus in the pipeline.

[0014] (3) A pipeline interior purification apparatus relating to a third invention may be the pipeline purification apparatus relating to the one aspect or the second invention in which the microorganism carrier includes a first microorganism carrier and a second microorganism carrier arranged at both ends of the curved-surface member, respectively.

[0015]

In this case, the microorganism carriers are respectively arranged at both ends of the curved-surface member, that is, it is possible to arrange them in a separated manner at both the ends which are more likely to contribute to purification. Therefore, the purification efficiency of the microorganism carrier with respect to the amount of material is high.

[0016] (4) A pipeline interior purification apparatus relating to a fourth invention may be the pipeline purification apparatus relating to from the one aspect to the third invention, including a first microorganism carrier and a second microorganism carrier arranged in the curved-surface member, wherein the first microorganism carrier and the second microorganism carrier are arranged opposite to each other with a lowermost part of the curve-surface member when installed in the pipeline being interposed therebetween.

[0017]

In this case, since the first microorganism carrier and the second microorganism carrier are arranged opposite to each other with the lowermost part being interposed therebetween, it is possible to maintain purifying effect by the first microorganism carrier and the second microorganism carrier while ensuring a flow velocity in the lowermost part of the pipeline.

Moreover, when the flow rate is low, the flow velocity will not be reduced, while when the flow rate is high, purification can be performed.

The phrase "opposite to each other" includes not only a case of perpendicular to the pipeline(a state in which the pipeline axis is a normal line), but also a case in which the first microorganism carrier and the second microorganism carrier are opposed to each other in a cross-section having a predetermined angle. That is, a case in which the first microorganism carrier and the second microorganism carrier are arranged in a staggered state along the lengthwise direction of the pipeline is included as well.

[0018] (5) A pipeline interior purification apparatus relating to a fifth invention may be the pipeline purification apparatus relating to the forth invention, in which the curved-surface member is arranged beyond ends of the first microorganism carrier and the second microorganism carrier .

[0019]

In this case, since the curved-surface member is arranged beyond ends of the first microorganism carrier and the second microorganism carrier, both ends in which neither the first microorganism carrier nor the second microorganism carrier is arranged can be used for fixing the pipeline interior purification apparatus, such as by providing a member for fixing at each end of the curved surface member, of by making both ends come into contact with the inner peripheral surface of the pipeline. Therefore, it can facilitate the fixing of the pipeline interior purification apparatus.

[0020] (6) A pipeline interior purification apparatus relating to a sixth invention may be the pipeline purification apparatus relating to from third to fifth inventions, in which the first microorganism carrier and the second microorganism carrier are arranged to have a distance therebetween within a range of not less than 10% and not more than 40% of a pipeline diameter when the curved-surface member is installed.

[0021]

In this case, when the distance is less than 10% of the pipeline diameter, it is difficult to ensure a flow velocity. Further, when the distance is more than 40% of the pipeline diameter, reaction efficiencies of the first microorganism carrier and the second microorganism carrier deteriorate.

[0022] (7) A pipeline interior purification apparatus relating to a seventh invention may be the pipeline purification apparatus relating to the third to sixth inventions, in which the first microorganism carrier and the second microorganism carrier are formed to have a thickness within a range of not less than 5 mm and not more than 50 mm.

[0023]

In this case, when the thickness is less than 5 mm, a problem arises in that the first microorganism carrier and the second microorganism carrier cannot retain microorganisms at a high density, thereby resulting in deterioration in reactivity, and when the thickness is more than 50 mm, a problem arises in that flow resistance thereof increases, resulting in decrease in the flow velocity.

[0024] (8) A pipeline interior purification apparatus relating to an eighth invention may be the pipeline purification apparatus relating to from the third to seventh inventions, in which the first microorganism carrier and the second microorganism carrier are formed such that a total of widths thereof is within a range of not less than 30% and not more than 95% of an inner circumference of the pipeline.

[0025]

In this case, when the total of the widths is less than 30%, a problem arises in that the reactivity of the first microorganism carrier and the second microorganism carrier deteriorates, and when the width is more than 95%, a problem arises in that flow resistance thereof increases, resulting in decrease in flow velocity.

[0026] (9) A pipeline interior purification apparatus relating to a ninth invention may be the pipeline purification apparatus relating to from the third to eighth inventions, in which the first microorganism carrier and the second microorganism carrier are formed continuously in a lengthwise direction of the pipeline when the curved-surface member is installed.

[0027]

In this case, the first microorganism carrier and the second microorganism carrier may be formed continuously in a lengthwise direction of the pipeline when the curved-surface member is installed. As a result of that, it is possible to further improve reaction efficiency while securing a flow velocity.

[0028] (10) A pipeline interior purification apparatus relating to a tenth invention may be a pipeline purification apparatus relating to from the third to ninth inventions, in which the curved-face member is formed to have a length within a range of not less than 30% and not more than 95% of an inner circumference of the pipeline when the curved-surface member is installed in the pipeline.

[0029]

In this case, when the curved-surface member has a length of less than 30% of the inner circumference of the pipeline, the installation of the curved-surface member becomes unstable, and when it has a length of more than 95% of the inner circumference of the pipeline, the installation of the curved-surface member becomes difficult.

[0030] (11) A pipeline interior purification apparatus relating to an eleventh invention may be the pipeline purification apparatus relating to from the one aspect to the tenth inventions, in which the curved-surface member includes a fixing part for positioning for arrangement in the pipeline .

[0031]

In this case, it is possible to secure a flow velocity by the fixing part appropriately positioning a lowermost part of the curved-surface member. The fixing part may utilize methods of such as fitting, engagement, welding, deposition, adhesion, screwing, and bolting.

[0032] (12) A pipeline interior purification system according to another aspect includes: a pipeline; and a pipeline interior purification apparatus including a curved surface member and a microorganism carrier arranged in the curved-surface member, at least a part of a crosssection of the curved-surface member being formed along a curved surface of the pipeline, wherein a microorganism carrier is formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member, and the microorganism carrier when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

[0033]

In this case, since the microorganism carrier is formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member, it is possible to maintain purifying effect by the microorganism carrier while securing a flow velocity in the lowermost part of the pipeline.

[0034] (13) A pipeline interior purification system relating to a thirteenth invention may be the pipeline interior purification system relating to the twelfth invention in which the curved-surface member when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

[0035]

[0036] (14) A pipeline interior purification system relating to a fourteenth invention may be the pipeline interior purification system relating to the other aspect or the thirteenth invention, including the pipeline interior purification apparatus in which the microorganism carrier includes a first microorganism carrier and a second microorganism carrier, wherein the first microorganism carrier and the second microorganism carrier are arranged opposite to each other with the lowermost part of the curved-surface member being interposed therebetween.

[0037]

The phrase "opposite to each other" includes not only a case of perpendicular to the pipeline(a state in which the pipeline axis is a normal line), but also a case in which the first microorganism carrier and the second microorganism carrier are opposed to each other in a cross-section having a predetermined angle. That is, a case in which the first microorganism carrier and the second microorganism carrier are arranged in a staggered manner along the lengthwise direction of the pipeline.

[0038] (15) A pipeline interior purification system relating to a fifteenth invention may be the pipeline interior purification system relating to from the other aspect to the fourteenth invention, including a connection member to be connected with the pipeline, in which the connection member includes an installation part for installing the pipeline interior purification apparatus in the pipeline.

[0039]

In this case, since as a result of including the installation part for installing the pipeline interior purification apparatus in the pipeline, the orientation of the connection member can be easily recognized, it becomes easy to install the connection member.

For example, the installation part allows adjustment of relative positional relationship between the position of the connection member and the pipeline interior purification apparatus. As a result of that, it is possible to make the first microorganism carrier and the second microorganism carrier arranged opposite to each other with the lowermost part of the curved-surface member being interposed therebetween.

BRIEF DESCRIPTION OF DRAWINGS

[0040]

Figure 1 is a schematic diagram to show an example of a pipeline interior purification apparatus relating to the present embodiment;

Figure 2 is a schematic diagram to show an example of a pipeline interior purification apparatus relating to the present embodiment;

Figure 3 is a schematic diagram to show an example of a pipeline interior purification apparatus relating to the present embodiment;

Figure 4 is a schematic cross-sectional view to illustrate a case in which sewage is flown in a pipeline interior purification system;

Figure 5 is a schematic cross-sectional view to illustrate a case in which sewage is flown in a pipeline interior purification system;

Figure 6 is a schematic view to show another example of the pipeline interior purification apparatus;

Figure 7 is a schematic view to show another example of the pipeline interior purification system;

Figure 8 is a schematic view to show a further example of the pipeline interior purification apparatus;

Figure 9 is a schematic view to show further examples of the pipeline interior purification system and the pipeline interior purification apparatus;

Figure 10 is a diagram to show another example of the pipeline interior purification apparatus;

Figure 11 is a diagram to show a state of the pipeline interior purification system in which a pipeline interior purification apparatus is arranged in piping;

Figure 12 is a diagram to show a state of the pipeline interior purification system in which a pipeline interior purification apparatus is arranged in piping;

Figure 13 is a diagram to show another example of the pipeline interior purification apparatus;

Figure 14 is a diagram to show another example of the pipeline interior purification system in which a pipeline interior purification apparatus is arranged in piping;

Figure 15 is a diagram to show another example of the pipeline interior purification apparatus;

Figure 16 is a diagram to show another example of the pipeline interior purification system in which a pipeline interior purification apparatus is arranged in piping;

Figure 17 is a schematic diagram to show a further example of the pipeline interior purification system;

Figure 18 is a schematic diagram to show a further example of the pipeline interior purification apparatus;

Figure 19 is a schematic diagram to show a further example of the pipeline interior purification system;

Figure 20 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 21 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 22 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 23 is a schematic diagram to illustrate fitting with a pipeline interior purification apparatus in a pipeline interior purification system;

Figure 24 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 25 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 26 is a schematic diagram to illustrate a connection member in a pipeline interior purification system;

Figure 27 is a schematic diagram to illustrate fitting with a pipeline interior purification apparatus in a pipeline interior purification system;

Figure 28 is a schematic diagram to illustrate a pipeline interior purification apparatus in a pipeline interior purification system; and

Figure 29 is a schematic diagram to illustrate a pipeline interior purification apparatus in a pipeline interior purification system.

REFERENCE SIGNS LIST

[0041] 100, 100a,..., lOOi Pipeline interior purification apparatus 200 Piping 280 Seal hose member 310, 310c, ..., 310g Microorganism carrier 320, 320c,..., 320g Microorganism carrier 330, 330a, 330b Microorganism carrier 400, 400a,..., 400g Curved-surface member 450c,..., 450g Fixing part 500, 500a,..., 500i Pipeline interior purification system 700 Connection member 711 Protrusion 712 Protrusion 800 Connection member 810 Protrusion P Lowermost part U Uppermost part R2 Diameter

DESCRIPTION OF EMBODIMENTS

[0042]

Hereinafter, referring to the drawings, embodiments of the present invention will be described. In the following description, like parts are given like symbols. They also have the same names and functions. Therefore, detailed description thereof will not be repeated.

[0043] < Embodiment s >

Figures 1 to 3 are schematic diagrams to show an example of a pipeline interior purification apparatus 100 relating to the present embodiment. Figure 1 shows an example of the pipeline interior purification apparatus 100, and Figures 2 and 3 show a state of a pipeline interior purification system 500 in which the pipeline interior purification apparatus 100 is arranged in piping 200 .

[0044]

As shown in Figure 1, the pipeline interior purification apparatus 100 mainly includes microorganism carriers 310, 320 and a curved-surface member 400.

[0045]

The curved-surface member 400 is made up of a curved surface along the inner peripheral surface of piping 200 (see Figure 2) to be described later. Moreover, the microorganism carriers 310, 320 are provided at ends of the curved-surface member 400.

[0046]

Further, the curved-surface member 400 has an outer peripheral diameter slightly larger than an inner peripheral diameter of the piping 200, and is made of an elastic body. As a result of that, the elasticity of curved-surface member 400 allows the microorganism carriers 310, 320 to come closer to each other. In this situation, the outer peripheral diameter of the curved-surface member 400 becomes smaller than the inner peripheral diameter of the piping 200, making it possible to arrange the pipeline interior purification apparatus 100 in the inner periphery of the piping 200.

[0047]

Moreover, as shown in Figures 1 and 2, the microorganism carriers 310, 320 are arranged opposite to each other with a lowermost part P being interposed therebetween. Further, the curved-surface member 400 is formed of a periphery not including a lowermost part P and including an uppermost part U so as to be absent in the vicinity of the lowermost part P.

The lowermost part P indicates a point located in a lowermost part of the piping 200, and the uppermost part U indicates a point located in an uppermost part of the piping 200.

[0048]

Further, examples of material for constituting the curved-surface member 400 include resins such as polyethylene and vinyl chloride, fiber reinforced plastics, metals such as steel and ductile cast iron, and reinforced concrete.

[0049]

In the pipeline interior purification apparatus 100 relating to the present embodiment, the microorganism carriers 310 and 320 are provided opposite to each other at a distance of LI.

Further, the microorganism carriers 310, 320 in the present embodiments have a thickness tl and a width L3.

In the present embodiment, the thickness (tl) is formed within a range of not less than 5 mm and not more than 50 mm, and a total of widths (L3) of the microorganism carriers are formed within a range of not less than 30% and not more than 95% of the inner periphery of the pipeline .

[0050]

When the thickness tl is less than 5 mm, a problem arises in that the microorganism carriers 310, 320 cannot retain microorganisms at a high density, resulting in decrease in reactivity, and when the thickness tl is more than 50 mm, a problem arises in that flow resistance thereof increases, resulting in decrease in flow velocity. Moreover, when the total of the widths is less than 30%, a problem arises in that the reactivity of the microorganism carriers 310, 320 deteriorates, while when the width is more than 95%, a problem arises in that flow resistance thereof increases, resulting in decrease in flow velocity.

Therefore, it is preferable that they have sizes within the above described range.

[0051]

The microorganism carriers 310, 320 are made from granular or small-piece material which is used for allowing aerobic microorganisms or the like to adhere thereto. Specifically, the material constituting the microorganism carriers 310, 320 includes resins such as polyethylene, polypropylene, and polyurethane, or ceramics, etc.

[0052]

Note that since the microorganism carrier 310, 320 needs to be water permeable, when the microorganism carrier 310, 320 is made of a hydrophobic material such as polyethylene and polypropylene, it is preferably subjected to hydrophilization treatment.

Moreover, since the microorganism carrier 310, 320 needs to allow oxygen and microorganisms (aerobic microorganisms) to be efficiently brought into contact with each other, it is preferable to use a fibrous body, a foamed body, a porous body, or a net-like body, etc. which has a large surface area and is less likely to be clogged.

[0053]

Moreover, when the microorganism carrier 310, 320 is made from a foamed body, since it is preferable that sewage permeates to the interior of the microorganism carrier 310, 320, it is preferable to use an open-cell type formed body than to use a closed-cell type foamed body. Note that a closed-cell type may be used.

[0054]

The shape of the microorganism carrier 310, 320 may be, for example, spherical, rectangular parallelepiped, cubic, sheet-shape, fibrous, net-shaped, or the like. In the present embodiment, the microorganism carriers 310, 320 will be described as being rectangular parallelepiped.

Moreover, to prevent the microorganism carriers 310, 320 from being flown out, the microorganism carriers 310, 320 may be enclosed in a vessel having a higher water permeability, for example, a net-like body or a porous pipe, etc.

[0055]

When the microorganism carrier 310, 320 is made from a fibrous body, a foamed body, a porous body, a net-like body or the like, it preferably has a higher porosity to increase the surface area of the microorganism carrier 310, 320. Specifically, the porosity is preferably more than 50%, and more preferably more than 80%.

Note that the above described porosity means a ratio of space in a unit volume represented in percentage.

[0056]

Moreover, as shown in Figures 1 and 2, the distance (LI) between opposing microorganism carriers 310, 320 is a distance within a range of not less than 10% and not more than 40% of the diameter R2 of the pipeline interior purification system 500.

Moreover, as shown in Figure 3, the pipeline interior purification apparatus 100 is formed to extend in the extending direction of the piping 200.

Note that in the present embodiment, although the curved-surface member 400 is assumed to be formed to extend in the extending direction of the piping 200, this is not limiting, and the curved-surface member 400 may be formed at a fixed distance interval.

[0057]

The piping 200 shown in Figures 2 and 3 may be made from any material usable as a sewage pipeline such as, without being limited to, resins such as polyethylene and vinyl chloride, fiber reinforced plastics, metals such as steel and ductile cast iron, and reinforced concrete. Moreover, although the cross-sectional shape of the piping 200 may include any shape having a closed crosssectional shape, such as a circular shape, and an oval shape, it is preferably a circular shape.

Note that when it is not a circular shape, the curved-surface member 400 is formed along each inner periphery.

[0058]

Next, Figures 4 and 5 are schematic sectional views for illustrating a case in which sewage is flown through the pipeline interior purification system 500.

[0059]

As shown in Figure 4, when a small amount of sewage WL flows through the pipeline interior purification system 500, the microorganism carriers 310, 320 are brought into an air exposure state. Moreover, the sewage WL flows to downstream without its flow velocity being hindered.

[0060]

On the other hand, as shown in Figure 5, when a large amount of sewage WH flows, the microorganism carriers 310, 320 become immersed in the sewage, thereby effecting purifying effect.

[0061]

As so far described, the microorganism carriers 310, 320 are repeatedly subjected to immersion in sewage and exposure to air depending on the water level in the pipeline .

As a result of that, microorganisms (aerobic microorganisms) can naturally adhere to and grow at the microorganism carriers 310, 320, thereby effecting purifying effect.

[0062] cOther examples>

Next, Figures 6 to 9 are schematic diagrams to show other examples of the pipeline interior purification system 500 and the pipeline interior purification apparatus 100 shown in Figures 1 and 2.

Figure 6 is a schematic diagram to show another example of the pipeline interior purification apparatus 100, and Figure 7 is a schematic diagram to show another example of the pipeline interior purification system 500.

Moreover, Figure 8 is a schematic diagram to show another example of the pipeline interior purification apparatus 100, and Figure 9 is a schematic diagram to show another example of the pipeline interior purification system 500.

[0063]

Hereinafter, description will be made on features in which the pipeline interior purification apparatuses 100a, 100b and the pipeline interior purification systems 500a, 500b are different from the pipeline interior purification apparatus 100 and the pipeline interior purification system 500. Note that like portions will be omitted from description. In the following other examples as well, description will not be repeated on similar portions [0064]

As shown in Figures 6 and 7, the pipeline interior purification apparatus 100a is different from the pipeline interior purification apparatus 100 in that a microorganism carrier 330a is formed in place of the microorganism carriers 310, 320. The microorganism carrier 330a is provided over the entire inner periphery of a curved-surface member 400a.

[0065]

Note that in the present embodiment, although the microorganism carrier 330a is assumed to be provided on the entire inner periphery of the curved-surface member 400a, this is not limiting, and it may be provided in the entire periphery of the curved-surface member 400a.

[0066]

Moreover, in the microorganism carrier 330a in Figures 6 and 7, a problem that flow resistance increases, thereby resulting in decrease in flow velocity is not likely to occur provided that the microorganism carrier 330a is arranged so as not to be arranged in the lowermost part in the piping 200.

[0067]

Moreover, as shown in Figures 8 and 9, in the pipeline interior purification apparatus 100b, a curved-surface member 400b is provided in place of the curved-surface member 400a of the pipeline interior purification apparatus 100a. The curved-surface member 400b is formed to be shorter than the curved-surface member 400a, and a microorganism carrier 330b which has a larger thickness than that of the microorganism carrier 330a is formed at ends of the curved-surface member 400b which is formed to be shorter than the curved-surface member 400a.

[0068]

In Figures 8 and 9, in a portion which is more likely to be immersed in sewage, the curved-surface member 400b is not formed and instead, the microorganism carrier 330b is formed.

[0069]

As a result of that, immersion in sewage and exposure to air are repeated so that microorganisms (aerobic microorganisms) naturally adhere to and grow at the microorganism carriers 330a, 330b, thereby effecting purifying effect.

[0070] <Further examples>

Next, Figures 10 to 12 are schematic diagrams to show one example of the pipeline interior purification apparatus 100. Figure 10 shows another example of the pipeline interior purification apparatus 100, and Figures 11 and 12 show a state of the pipeline interior purification system 500c in which the pipeline interior purification apparatus 100c is arranged in the piping 200 .

[0071]

As shown in Figure 10, the pipeline interior purification apparatus 100c mainly includes microorganism carriers 310c, 320c, a curved-surface member 400c, and fixing part 450c.

[0072]

The curved-surface member 400c is made up of a curved surface along the inner peripheral surface of the piping 200 (see Figure 11). Moreover, microorganism carriers 310c, 320c are provided at ends of the curved-surface member 400c. The microorganism carriers 310c and 320c are provided so as to be opposite to each other with a lowermost part P being interposed therebetween.

The lowermost part P indicates a point which is positioned at a lowermost part of the piping 200.

[0073]

Next, as shown in Figure 11, in the pipeline interior purification system 500c, the pipeline interior purification apparatus 100c is fixed to the lowermost part P of the piping 200 by the fixing part 450c. The fixing part 450c is for the purpose of fixing the pipeline interior purification apparatus 100c to the piping 200.

For example, the fixing part 450c is a screw, a bolt, a welded body, or the like. Note that an adhesive agent may be used to fix between the fixing part 450c and the piping 200. Besides, welding, fitting, bonding, etc. may be used.

For that reason, the fixing part 450c as shown in Figures 10 and 11 may not be provided.

[0074]

Moreover, in the pipeline interior purification apparatus 100c, the microorganism carriers 310c and 320c are provided opposite to each other at a distance LI.

Further, the microorganism carriers 310c, 320c each have a thickness tl and a width L3 . In the present embodiment, the thickness (tl) is formed within a range of not less than 5 mm and not more than 50 mm, and a total of widths (L3) is formed within a range of not less than 30% and not more than 95% of the inner periphery of the pipeline.

[0075]

When the thickness tl is less than 5 mm, a problem arises in that the microorganism carrier 310c, 320c cannot retain microorganisms at a high density, thereby causing decrease in reactivity, and when the thickness tl is more than 50 mm, a problem arises in that the flow resistance thereof increases, resulting in decrease in flow velocity. Further, when the width is less than 30% of the inner periphery of the pipeline, a problem arises in that the reactivity of the microorganism carriers 310c, 320c deteriorates, and when the width is more than 95% of the inner periphery of the pipeline, a problem arises in that flow resistance thereof increases, resulting in decrease in flow velocity. For that reason, it is preferable that they have sizes within the above described range.

[0076] <Further examples>

Next, Figures 13 and 14 are schematic diagrams to show another example of the pipeline interior purification apparatus 100. Figure 13 shows another example of the pipeline interior purification apparatus 100, and Figure 14 shows another example of the pipeline interior purification system 500 in which the pipeline interior purification apparatus 100 is arranged in the piping 200.

Hereinafter, only features which are different from those of the pipeline interior purification apparatus 100c and the pipeline interior purification system 500c of Figures 10 to 12 will be described.

[0077]

As shown in Figure 13, a curved-surface member 400d is formed so as not to be in contact with the inner peripheral surface (bottom surface) of the piping 200, and microorganism carriers 310d and 320d are respectively attached to an end of the curved-surface member 400d.

This makes it easy to fix the microorganism carrier to the curved-surface member 400d.

Further, as shown in Figure 13, the curved-surface member 400d is formed with a fixing part 450d. The fixing part 450d is for the purpose of fixing the pipeline interior purification apparatus lOOd so as to be floated from the inner peripheral surface of the piping 200 .

[0078]

Note that although the microorganism carrier 310d, 320d is assumed to be rectangular parallelepiped, irregularities may be formed thereon to further increase the surface area to be brought into contact with sewage.

Moreover, although the curved-surface member 400d is assumed to have a fixed surface curvature, this is not limiting, and it in only required that at least a part thereof extends along the inner peripheral surface of the piping 200.

The pipeline interior purification system 500d can improve purification efficiency by providing the pipeline interior purification apparatus lOOd in the piping 200.

[0079] <Further examples>

Figures 15 and 16 are schematic diagrams to show a further example of the pipeline interior purification apparatus 100. Figure 15 shows another example of the pipeline interior purification apparatus 100, and Figure 16 shows another example of the pipeline interior purification system 500 in which the pipeline interior purification apparatus 100 is arranged in the piping 200.

[0080]

As shown in Figure 15, in the pipeline interior purification apparatus lOOe, the curved-surface member 400e is provided in such a way to pass through the microorganism carriers 310e, 320e. Moreover, a fixing part 450e is formed at each end of the curved-surface member 400e.

As shown in Figure 16, a pipeline interior purification system 500e is formed by providing the pipeline interior purification apparatus lOOe in the piping 200.

[0081]

In this case, in the pipeline interior purification system 500e, since the likelihood that the fixing part 450e comes into contact with sewage will be extremely low, it is possible to prevent decrease in flow velocity.

[0082] <Further example>

Figure 17 is a schematic diagram to show a further example of the pipeline interior purification system 500.

[0083]

As shown in Figure 17, in a pipeline interior purification system 500f, microorganism carriers 310f, 320f of the pipeline interior purification apparatus lOOf are alternately provided along the extending direction of the piping 200.

[0084]

Further, as shown in Figure 17, a curved-surface member 40Of is fixed by the fixing part 45Of, and the microorganism carriers 310f, 320f are provided on the curved-surface member 400f.

[0085]

In this case, the pipeline interior purification system 500f can perform purification while reducing the amount of the microorganism carrier 310f, 320f when it is installed in the piping 200 in the same length.

[0086] <Further examples>

Figures 18 and 19 are schematic diagrams to show further examples of the pipeline interior purification system 500 and the pipeline interior purification apparatus 100. Figure 18 is a schematic diagram to show a further example of the pipeline interior purification apparatus 100, and Figure 19 is a schematic diagram to show a further example of the pipeline interior purification system 500.

[0087]

In a pipeline interior purification apparatus lOOg, a fitting part 455g is formed in a lower part of the fixing part 450g.

Further, as shown in Figure 19, in the piping 200, a groove 255g to be fitted with the fitting part 455g is formed.

[0088]

As a result of that, it is possible to securely fix the pipeline interior purification apparatus lOOg to the piping 200, thus easily forming the pipeline interior purification system 500g.

That is, it is possible to easily arrange the pipeline interior purification apparatus lOOg at the lowermost part of the piping 200.

[0089]

Further, as shown in Figure 19, the fixing part 450g is attached to the curved-surface member 400g, and the microorganism carriers 310g, 320g are respectively provided at ends of the curved-surface member 400g.

[0090] <Pipeline interior purification system including connection member>

Figures 20, 21, and 22 are schematic diagrams to illustrate a connection member 700 in the pipeline interior purification system 500, and Figure 23 is a schematic diagram to illustrate fitting with the pipeline interior purification apparatus 100, 100a in the pipeline interior purification system 500. In Figure 23, description will be made taking the pipeline interior purification apparatus 100 as an example.

Figure 20 shows a front view of the connection member 700, Figure 21 shows a side view of the connection member 700, and Figure 23 shows a bottom view of the connection member 700.

[0091]

As shown in Figures 20 to 22, the connection member 700 is made up of a connection member of elbow type (L shape). Hereinafter, features in which the connection member 700 is different from a normal connection member will be described.

[0092]

As shown in Figures 20 to 22, the connection member 700 includes two protrusions 711, 712. The protrusions 711, 712 are formed so as to support the inner side (the lowermost point P side) of the microorganism carriers 310, 330a, 320 of the pipeline interior purification apparatus 100, 100a provided in the piping 200 in the pipeline interior purification apparatus 100, 100a.

[0093]

As a result of that, as shown in Figure 23, by arranging the connection member 700 in the vertical direction, thereby making the pipeline interior purification apparatus 100, 100a arranged in the piping 200, it is possible to easily arrange the pipeline interior purification apparatus 100, 100a at a predetermined position of the piping 200 even when the pipeline interior purification apparatus 100, 100a is not visible from the outside.

Further, the protrusions 711, 712 are formed so as to be able to achieve a reverse insertion prevention effect.

[0094]

Note that the surfaces of protrusions 711, 712 may be tapered, R-shaped, or chamfered. As a result of that, it becomes possible to make the connection member 700 to be easily fitted with the pipeline interior purification apparatus 100.

[0095]

Note that although the connection member 700 is assumed to have an elbow shape of joint, the shape may be, without being limited thereto, a socket shape, a T-shape (cheese form), or the like. Moreover, either a part of the curved-surface member 400 or the fixing part 450 may be fixed.

As a result of that since the outside of the microorganism carrier 310, 330a, 320, 330b may alternately come into contact with air or sewage, it is possible to improve purifying effect.

[0096] <Another example of pipeline interior purification system including connection member>

Figures 24, 25, and 26 are schematic diagrams to illustrate a connection member 800 in the pipeline interior purification system 500, and Figure 27 is a schematic diagram to illustrate fitting with the pipeline interior purification apparatus 100c,..., lOOg in the pipeline interior purification system 500c,..., 500g. In Figure 27, description will be made taking the pipeline interior purification apparatus 100c as an example.

Figure 24 shows a front view of the connection member 800, Figure 25 shows a side view of the connection member 800, and Figure 26 shows a bottom view of the connection member 800.

[0097]

As shown in Figures 24 to 26, the connection member 800 includes a protrusion 810. The protrusion 810 is formed so as to be fitted to the inner periphery of the piping 200.

That is, the connection member 800 is formed such that the protrusion 810 is fitted to a part of the inner periphery of the piping 200.

Further, surfaces 811, 812 of the protrusion 810 of the connection member 800 are formed so as to support the outer side (the side of an uppermost point U) of the microorganism carrier 310c, 320c of the pipeline interior purification apparatus 100c provided in the piping 200 in the pipeline interior purification system 500c.

[0098]

As a result of that, by arranging the connection member 800 in the vertical direction, thereby making the pipeline interior purification apparatus 100c,..., lOOg arranged in the piping 200, it is possible to easily arrange the pipeline interior purification apparatus 100c,..., lOOg at the lowermost part P of the piping 200 even when the pipeline interior purification apparatus 100c,..., 100c is not visible from the outside.

Moreover, since the protrusion 810 is formed into a size other than that of the pipeline interior purification apparatus 100c,..., lOOg, it is possible to uniquely determine the position of the piping 200. That is, a reverse insertion prevention effect can be achieved.

[0099]

Note that the surfaces 811, 812 may betapered, R-shaped, or chamfered.

In this way, it is possible to make the surfaces 811, 812 to be easily fitted with the pipeline interior purification apparatus 100c.

[0100]

Figure 28 is a schematic diagram to illustrate a pipeline interior purification apparatus lOOh in the pipeline interior purification system 500h.

[0101]

As shown in Figure 28, in the pipeline interior purification system 500h, a seal hose member 280 is formed with respect to the piping 200, and a microorganism carrier 330 is attached in advance to the seal hose member 280.

[0102]

That is, the seal hose member 280 and the microorganism carrier 330 are formed by using a so-called hose lining process. Specifically, they are formed by inserting a seal hose member 280, to which the microorganism carrier 330 is attached in advance, into the piping 200, feeding air thereinto, and inverting the seal hose member 280 and the microorganism carriers 330 in the piping 200.

[0103]

In this case, since, as shown in Figure 28, the microorganism carrier 330 is not formed in the lowermost part of the piping 200, it is possible to prevent hindering of the flow velocity of water flowing in the piping 200.

[0104]

Next, Figure 29 is a schematic diagram to illustrate a pipeline interior purification apparatus lOOi in a pipeline interior purification system 500i.

[0105]

Hereinafter, the pipeline interior purification system 500i shown in Figure 29 will be described only on features in which it differs from the pipeline interior purification system 500h shown in Figure 28.

[0106]

In the pipeline interior purification system 500i shown in Figure 29, microorganism carriers 310, 320 are formed in place of the microorganism carrier 330.

[0107]

The pipeline interior purification system 500i shown in Figure 29 is formed, as in Figure 28, by inverting the seal hose member 280 and the microorganism carriers 310, 320 in the piping 200.

[0108]

Note that although, in the present embodiment, description has been made on a case in which the microorganism carriers 310, 330, 330a, 310, 310c,..., 310g, 320, 330b, 320c,..., 320g extend in a continuous manner in the lengthwise direction of the piping 200, the microorganism carriers may be, without being limited thereto, arranged in an intermittent manner. For example, the microorganism carriers 310, 330a, 310c, ..., 310g and the microorganism carriers 320, 330b, 320c,..., 320g are arranged in a staggered manner in the extending direction of the piping 200.

Further, although description has been made on a case in which the curved-surface member 400, 400a,..., 400g extends continuously along the lengthwise direction of the piping 200, this is not limiting, and the curved-surface member may be arranged partially or in an intermittent manner in the lengthwise direction of the piping 200.

Further, although description has been made on a case in which the pipeline interior purification apparatus 100, 100a,..., lOOi extend in a continuous manner in the lengthwise direction of the piping 200, this is not limiting, and the pipeline interior purification apparatus may be in a unitized form, each of plurality units can be forcedly inserted into the piping 200 in a continuous manner like a stackable pencil.

[0109]

Note that although the connection member 800 is assumed to have an elbow shape, the shape thereof may be, without being limited thereto, a socket shape, a T-shape (a cheese form), or the like. Moreover, either a part of the curved-surface member 400c,..., 400g or the fixing part 450c,..., 450g may be fixed.

As a result of that, since the outer sides of the microorganism carriers 310c,..., 310g, 320c,..., 320g may alternately come into contact with air or sewage, it is possible to improve purifying effect.

[0110]

As described so far, since in the pipeline interior purification apparatus 100, 100a,..., lOOi relating to the present invention, the microorganism carriers 310, 330, 330a, 310c,..., 310g, 320, 330b, 320c,..., 320g are provided opposite to each other with the lowermost part P being interposed, and extending in the lengthwise direction of the piping 200, it is possible to maintain purifying effect by the microorganism carriers 310, 330, 330a, 310c,..., 310g, 320, 330b, 320c,..., 320g while ensuring flow velocity in the lowermost part P of the piping 200.

[0111]

Moreover, in the case of sewage WL having a low flow rate, the sewage will not come into contact with the microorganism carriers 310, 330, 330a, 310c,..., 310g, 320, 330b, 320c,..., 320g, and therefore will not reduce the flow velocity of sewage, and in the case of sewage WH having a high flow rate, the sewage will come into contact with the microorganism carriers 310, 330, 330a, 310c,..., 310g, 320, 330b, 320c,..., 320g, thereby allowing them to perform purification.

[0112]

Moreover, since by using the connection member 700, 800, the protrusions 711, 712 and the surfaces 811, 812 of the protrusion 810 make the pipeline interior purification apparatus 100, 100a,..., lOOg to be securely arranged in the piping 200, it is possible to securely arrange the pipeline interior purification apparatus 100, 100a,..., lOOg at a predetermined position.

[0113]

In the present invention, the piping 200 corresponds to "the pipeline"; the pipeline interior purification apparatus 100, 100a,..., lOOi corresponds to "the pipeline interior purification apparatus"; the curved-surface member 400, 400a,..., 400g and the seal hose member 280 correspond to "the curved-surface member"; the microorganism carrier 310, 310c,..., 310g corresponds to "the first microorganism carrier", the microorganism carrier 320, 320c,..., 320g corresponds to "the second microorganism carrier"; the microorganism carrier 310, 310c,..., 310g, the microorganism carrier 320, 320c,..., 320g, and the microorganism carrier 330, 330a, 330b correspond to "microorganism carrier"; the lowermost part P corresponds to "the lowermost part"; the distance LI corresponds to "the distance between the first microorganism carrier and the second microorganism carrier"; the diameter R2 corresponds to "the pipeline diameter"; the fixing part 450c,..., 450g corresponds to "the fixing part"; the pipeline interior purification system 500, 500a,..., 500i corresponds to "the pipeline interior purification system"; the connection member 700, 800 corresponds to "the connection member"; and the protrusion 711, 712 and the protrusion 810 correspond to "the installation part".

[0114]

Although one preferred embodiment of the present invention is as described so far, the present invention will not be limited thereto. It will be understood that various other embodiments can be made without departing from the spirit and scope of the present invention. Further, although actions and effects according to the configuration of the present invention have been described in the present embodiment, these actions and effects are merely examples, and will not limit the present invention.

Claims

1. A pipeline interior purification apparatus to be installed in a pipeline, comprising: a curved-surface member, at least a part of a crosssection of the curved-surface member being formed along a curved surface of the pipeline; and a microorganism carrier formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member, wherein the microorganism carrier when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

2 . The pipeline interior purification apparatus according to claim 1, wherein the curved-surface member when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

3 . The pipeline interior purification apparatus according to claim 1 or 2, wherein the microorganism carrier includes a first microorganism carrier and a second microorganism carrier arranged at both ends of the curved-surface member, respectively.

4 . The pipeline interior purification apparatus according to any one of claims 1 to 3, comprising a first microorganism carrier and a second microorganism carrier arranged in the curved-surface member, wherein the first microorganism carrier and the second microorganism carrier are arranged opposite to each other with a lowermost part of the curve-surface member when installed in the pipeline being interposed therebetween.

5. The pipeline interior purification apparatus according to claim 4, wherein the curved-surface member is arranged beyond ends of the first microorganism carrier and the second microorganism carrier.

6 . The pipeline interior purification apparatus according to any one of claims 3 to 5, wherein the first microorganism carrier and the second microorganism carrier are arranged to have a distance therebetween within a range of not less than 10% and not more than 40% of a pipeline diameter when the curved-surface member is installed.

7. The pipeline interior purification apparatus according to any one of claims 3 to 6, wherein the first microorganism carrier and the second microorganism carrier are formed to have a thickness within a range of not less than 5 mm and not more than 50 mm.

8 . The pipeline interior purification apparatus according to any one of claims 3 to 7, wherein the first microorganism carrier and the second microorganism carrier are formed such that a total of widths thereof is within a range of not less than 30% and not more than 95% of an inner circumference of the pipeline .

9. The pipeline interior purification apparatus according to any one of claims 3 to 8, wherein the first microorganism carrier and the second microorganism carrier are formed continuously in a lengthwise direction of the pipeline when the curved-surface member is installed.

10. The pipeline interior purification apparatus according to any one of claims 3 to 9, wherein the curved-face member is formed to have a length within a range of not less than 30% and not more than 95% of an inner circumference of the pipeline when the curved-surface member is installed in the pipeline.

11. The pipeline interior purification apparatus according to any one of claims 1 to 10, wherein the curved-surface member includes a fixing part for positioning for arrangement in the pipeline.

12. A pipeline interior purification system, comprising: a pipeline; and a pipeline interior purification apparatus including a curved surface member and a microorganism carrier arranged in the curved-surface member, at least a part of a cross-section of the curved surface member being formed along a curved surface of the pipeline, wherein a microorganism carrier is formed in a periphery of or on an inner peripheral side of at least a part of the curved-surface member, and the microorganism carrier is absent on a surface of a lowermost part of the pipeline when it is installed in the pipeline.

13 . The pipeline interior purification system according to claim 12, wherein the curved-surface member when installed in the pipeline is absent on a surface of a lowermost part of the pipeline.

14 . The pipeline interior purification system according to claim 12 or 13, comprising the pipeline interior purification apparatus in which the microorganism carrier includes a first microorganism carrier and a second microorganism carrier, wherein the first microorganism carrier and the second microorganism carrier are arranged opposite to each other with the lowermost part of the curved-surface member being interposed therebetween.

15. The pipeline interior purification system according to claims 12 to 14, further comprising: a connection member to be connected with the pipeline, wherein the connection member includes an installation part for installing the pipeline interior purification apparatus in the pipeline.