JPH0448878Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a contact material that is housed and used in a septic tank for purifying wastewater from buildings, residences, etc.

[Conventional technology]

Traditionally, buildings and residences in areas without sewage facilities have been using methods to self-treat sewage.
Generally, a septic tank is used in which wastewater is temporarily stored in a storage chamber, and the wastewater is decomposed during the storage.

The sewage treatment method used in this septic tank is aeration, which is a type of activated sludge method, in which air and sewage are brought into active contact to breed aerobic microorganisms in the sewage, and the aerobic microorganisms decompose the sewage. (aeration) type wastewater treatment method is known.

Septic tanks that employ this aeration system usually use a contact material that has a large number of sewage flow gaps, which are sewage flow gaps, in order to bring air and sewage into contact more effectively in a small volume.

In order to improve the sewage treatment ability of this contact material, it is desirable to increase the contact area with sewage as much as possible to expand the breeding space for aerobic microorganisms. It is also necessary to provide appropriate air gaps so that the flow of wastewater is not impaired, and for this reason, conventionally,
Contact materials used to be used in the old days, such as cobblestone (chestnut stone), but in recent years, small contact materials that can be filled in the tank as shown in Figures 6 and 7, and those installed in the tank as shown in Figures 8 and 9. There is a large contact material of the type.

By the way, in the case of the small-sized contact materials shown in FIGS. 6 and 7, each contact material is simply put into the septic tank, so there may be places where the contact material is dense in the septic tank. There was a risk that a stable and high aeration effect could not be obtained due to the formation of rare spots, and when cleaning the inside of the tank, the large number of contact materials filled in the tank had to be removed one by one from the tank, which required cleaning time. .

In comparison, in the case of the large-sized contact material shown in FIGS. 8 and 9, compared to the small-sized contact material,
Since the pre-designed constant shape is maintained, a stable and high aeration effect can be obtained, and when cleaning the inside of the tank, there is no need to take out a large number of contact materials one by one.

The contact material shown in Fig. 6 has an outer diameter of 5 to 10 mm,
The contact material is a small mesh pipe 01 about 10 cm long and made of synthetic resin such as polyester, nylon, polyethylene, polypropylene, polyvinyl chloride, etc. The contact material shown in Fig. 7 is made of the same synthetic resin as above. The contact material shown in Fig. 8 is made of curled synthetic resin such as polyester, nylon, polyethylene, polypropylene, polyvinyl chloride, etc. The contact material shown in Fig. 9 is a large one made by hardening the wire 03 into a loofah shape.
This is a large-sized contact material in which synthetic resin contact materials 05 similar to those shown in FIG. 8 are laminated, each having a protrusion 04 on a flat surface. Further, in these figures, 06 is a wastewater circulation gap.

[Problem that the invention attempts to solve]

By the way, large contact materials as well as small contact materials are installed in septic tank manufacturing factories or inside septic tanks after being produced in factories, but since these large contact materials have a large volume, transportation costs are high. It was expensive.

Therefore, conventionally, in the contact material shown in FIG. 9, which is relatively easy to make compact among these large contact materials, only the contact plate 05 is transported, and each contact plate 05 is transported at the septic tank manufacturing factory or construction site.
There is also a method of assembling the parts 5 by adhesion or welding, but the adhesion and welding are time-consuming and, especially in the case of welding, assembly is difficult for those without welding experience.

The present invention was developed in view of the problems of the conventional technology, and allows for transportation in a smaller volume than when assembled.
The purpose is to provide a contact material with a strong three-dimensional structure that can be easily assembled by anyone.

(Means for Solving the Problems) That is, the present invention includes a plurality of contact plates stacked and arranged at appropriate intervals in a septic tank, and an appropriate number of connections for connecting the plurality of contact plates in a blind manner. a string member, and a support for maintaining the space between the contact plates that is assembled and arranged between the contact plates when the contact plates 5 are assembled, and for the support to be assembled to the connecting string member. The present invention provides an assembly type contact material characterized in that it is constructed of a cylindrical body having a slit.

[Effect]

When transporting the assembled contact material of the present invention, the support is removed from between each contact plate, and the contact plates are stacked and transported. Therefore, the contact material can be transferred in a smaller volume than when assembled.

In addition, when assembling the prefabricated contact material of the present invention, a plurality of contact plates connected by connecting string members are stacked in a blind manner at appropriate intervals in a septic tank, and then a space is left between each contact plate. Assemble the holding support by assembling and arranging it.

Therefore, anyone can easily assemble a contact material with a strong three-dimensional structure.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a central vertical cross-sectional view of a septic tank that employs the prefabricated contact material according to the embodiment of the present invention, Fig. 2 is a perspective view showing the prefabricated contact material according to the embodiment of the present invention when it is assembled, and Fig. 3 is the actual implementation. FIG. 4 is a perspective view of the support used in the prefabricated contact material of this example, and FIG. 5 is a perspective view of the support of FIG. 4. FIG. 3 is a partially cutaway cross-sectional view showing a slit portion.

First, the configuration of the septic tank 10 that employs the prefabricated contact material according to the embodiment of the present invention will be explained. As shown in FIG. A contact aeration chamber 12 for oxidizing and decomposing water by aeration, a settling chamber 13 for keeping the water treated in the contact aeration chamber 12 still and separating exfoliated sludge by sedimentation, and a disinfection chamber 14 for sterilizing the treated water with a solid chlorine agent or the like. The precipitation separation chamber 1
An inflow pipe 111 for waste water is arranged at 1, an outflow pipe 141 for treated water is arranged at the disinfection chamber 14, and an aeration pipe 15 for generating air bubbles for aeration is arranged at the bottom of the contact aeration chamber 12. Along with
An assembly type contact material 20 according to an embodiment of the present invention is disposed above the aeration pipe 15 of the contact aeration chamber 12.

As shown in FIGS. 2 and 3, the assembly type contact material 20 of this embodiment has an appropriate number of connections in which a plurality of contact plates 21 are laminated and arranged at appropriate intervals and connected in a blind manner. String (connecting string member)
22, and each contact plate 21 when assembling the contact material 20.
A support body 23 for maintaining space between each contact plate 21 assembled and arranged therebetween is provided.

The contact plates 21 are four plates, for example, 1 m long and 50 cm wide, taking into account the size of the septic tank 20, and are made of materials such as polyester, nylon, polyethylene,
Flat plate materials made of synthetic resins such as polypropylene and polyvinyl chloride are used, but in order to improve the sewage treatment effect through aeration, mesh plate materials with a large surface area are preferred.

Note that the interval between each contact plate 21 at this time is 8 to 8.
10 cm, and this interval becomes the sewage circulation gap 24 which is the sewage circulation path.Furthermore, at the same position on the plate surface of each contact plate 21, there are five connecting strings 2.
Two string holes 25 are formed, and a connecting string 22 is inserted through each of these string holes 25.

These connecting strings 22 are made of bristly yarn such as polyester or nylon (usually 10,000 to 30,000 deniers/
1 to 200 filaments) are used, each connecting string 2
A small stopper plate 26 for preventing the connecting string 22 from coming off from the string hole 25 is fixed to both ends of the connecting string 2 by knot welding or the like.

Note that the length of each of these connecting strings 22 is the same as the above-mentioned 4
The length is such that two contact plates 21 can be connected in a blind manner at intervals of 8 to 10 cm.

The support body 23 includes a set of donut-shaped end plates 231 and four support plates 232 as shown in FIG.
These supports 23 are connected to connecting strings 22 to each end plate 231 during assembly.
A slit 233 for assembling is formed, and as shown in FIG. 5, this slit 233 is a V-shaped slit that opens outward.

Further, as the material for these supports 23, synthetic resins such as polyester, nylon, polyethylene, polypropylene, and polyvinyl chloride are used.

Note that the length of these supports 23 in the axial direction is
The length is 8 to 10 cm, which is the same as the length between the contact plates 21.

Next, the operation of the embodiment of the present invention will be explained.

First, to explain the transfer of the assembly type contact material 20 of the embodiment, as shown in FIG.
The contact plates 21 connected by 2 are overlapped and transported to a predetermined location where the septic tank 10 is located together with a support 23 separately stored in a storage box or the like.

Therefore, the contact material 20 can be transported in a smaller volume than when assembled.

Next, when assembling the prefabricated contact material 20 of the embodiment, as shown in FIG. 21 each from 8 to 10
They are stacked in a blind manner with an interval of cm (sewage circulation gap 24).

The stacking direction at this time is a direction perpendicular to the vertical direction of the septic tank 10, and by arranging these contact plates 21 in a stacked manner at the above-mentioned intervals, a tension frame is created between each contact plate 21 (sewage circulation gap 24). State connection string 22
A portion of each is exposed.

After that, the support body 23 is inserted into the exposed connecting cords 22 through the slits 233 to the adjacent contact plate 21 in a pressure-contact state, so that the support body 23 can be easily attached to the contact plate with the connecting cords 22 stored. It can be assembled and arranged between the support body 21 and the support body 23 in this way.
Since the connecting string 22 is assembled in a stored state, there is little risk of the sludge adhering to the support body 23 falling off from the contact plate 21 due to the weight of the sludge. In this assembly, all contact materials may be assembled in advance and then placed in the contact aeration chamber 12.

Note that the action of the septic tank 10 that employs the assembled contact material 20 of the present invention is that the wastewater that flows in from the inflow pipe 111 first flows into the sedimentation separation chamber 11, where the suspended matter contained in the wastewater is separated by sedimentation. The wastewater from which suspended matter has been removed flows into the contact aeration chamber 12, where the biofilm of aerobic microorganisms grown on the surface of the prefabricated contact material 20 of the present invention oxidizes and decomposes organic matter in the wastewater.

At this time, the waste water is caused to convect by air bubbles generated from the air diffuser pipe 15, circulates between the waste water circulation gaps 24 of the assembled contact material 20, and is purified.

After that, the treated water purified in the contact aeration chamber 12 flows into the settling chamber 13, where it is temporarily stopped to separate sediment such as biofilm sludge that has peeled off from the contact material 20, and only the supernatant water is disinfected. It is sent to the chamber 14, where it is sterilized and sterilized, and the outflow pipe 1
41 to the outside.

As explained above, by configuring the assembly type contact material 20 of the embodiment of the present invention, during transportation,
Since the support plate 23 is removed from between each contact plate 21 of the contact material 20 and these contact plates 21 are overlapped and transferred, the contact material 20 can be transferred in a smaller volume than when assembled. Anyone can easily assemble the contact plates 21 connected in a blind manner by stacking them at the above-mentioned intervals, and then assembling and arranging the space-maintaining supports 23 between each contact plate 21. It is possible to assemble the contact material 20 with a strong three-dimensional structure.

Further, in this embodiment, since a cylindrical frame is used for the support 23, it is lightweight and has a large surface area, and since the support 23 can be assembled with the connecting string 22 in a stored state, it can be attached to the support 23. Due to the weight of the sludge, there is little risk of it falling out from between the contact plates 21.

Furthermore, in this embodiment, since the stacking direction of the contact plates 21 is perpendicular to the vertical direction of the septic tank 10, the sewage circulation gap 24 faces the vertical direction of the septic tank 10, and therefore, the sewage circulation gap 24 can be opened without much resistance.
Wastewater is circulated and purified along the route, improving the effectiveness of wastewater treatment.

In this embodiment, the connecting string 22 is shown as the connecting string member, but other materials such as a flexible connecting band may also be used.

Further, the number and size of the contact plates 21, the width of the interval between each contact plate 21, etc. are not limited to those described above.

Further, the shape of the support body 23 is not limited to the cylindrical frame, but may be any other shape, and the way the support body 23 is attached to the contact plate 21 does not necessarily require that the connecting cord 22 be accommodated. It is not necessary to attach it as shown.

Furthermore, the lamination method of the contact plate 21 is also different from that of the septic tank 1.
The direction does not have to be perpendicular to the vertical direction of 0, but may be the vertical direction of the septic tank 10, for example.

[Effect of idea]

In this way, the present invention has the effect that the support body is removed from between each contact plate of the contact material and these contact plates are overlapped and transferred, so the contact material can be transferred in a smaller volume than when assembled. It will be done.

In addition, during assembly, a plurality of contact plates connected in a blind manner with connecting string members are stacked and arranged at appropriate intervals, and then a space-maintaining support is assembled and arranged between each contact plate. Since it is assembled, anyone can easily assemble a contact material with a strong three-dimensional structure.

[Brief explanation of drawings]

Fig. 1 is a central vertical cross-sectional view of a septic tank that employs the prefabricated contact material according to the embodiment of the present invention, Fig. 2 is a perspective view showing the prefabricated contact material according to the embodiment of the present invention when it is assembled, and Fig. 3
The figure is a perspective view showing the storage state of the prefabricated contact material of this example during transportation, FIG. 4 is a perspective view of a support used in the prefabricated contact material of this example, and FIG.
6 is a partially cutaway sectional view showing the slit portion of the support shown in the figure, and FIGS. 6 to 9 are views showing various conventional contact materials. 10... Septic tank, 20... Assembly type contact material, 21
... Contact plate, 22 ... Connecting string (connecting string member), 2
3...Support.

Claims (1)

[Scope of utility model registration request] A plurality of contact plates stacked at appropriate intervals in a septic tank, an appropriate number of connecting string members for connecting the plurality of contact plates in a blind manner, and a space between each of the contact plates when the contact plates are assembled. An assembly type contact comprising a support for maintaining space between each contact plate to be assembled and arranged, and the support is composed of a cylindrical body having a slit for assembly to the connecting string member. Material.