JPH10216764A - Microorganism carrier for cleaning sewage and unit therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microorganism carrier for cleaning sewage which is suitable for mass production and also satisfies such the conditions that microorganisms actively function and enables cost reduction and is excellent in maintenance and to provide a unit thereof. SOLUTION: In the microorganism carrier for leaning sewage, a wholly plane surface part is constituted of a plurality of trunk parts B which are essentially parallel while holding intervals in a first direction and of many connection parts C which mutually connect the adjacent trunk parts B, B while holding intervals in a second direction essentially orthogonal to the first direction. In the respective trunk parts B, many loop parts R projecting in a third direction from the face of the above-mentioned surface part are formed while holding intervals in the above-mentioned second direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microorganism carrier for purifying sewage and a unit therefor for purifying filthy water from rivers, lakes and marshes. The present invention relates to a carrier for carrying microorganisms and a unit thereof when purifying contaminated components by the activity of microorganisms (including fungi and metazoans) while fluidizing sewage.

[0002]

2. Description of the Related Art The construction of a purification facility using such a microorganism carrier for purifying sewage has been promoted because of its advantages such as being extremely natural for ecosystems, low running costs, and a small facility space. ing.

Although it is possible to use a porous metal plate or the like as a carrier, a combination of a string or a thread loop is generally used at present because the contact area cannot be increased. .

Representatively, there are those disclosed in Japanese Patent Publication No. 6-65291, Japanese Patent Publication No. 5-48116, and Japanese Patent Publication No. 2-5155.

[0005] Each of these is a combination of a trunk and a loop yarn or twisted or wound helically, and as a whole, it can be called a single tree (hereinafter also referred to as a tree-shaped carrier). )). here,
The use of the loop yarn, the spiral twisting, or the winding is to increase the contact area of microorganisms as much as possible and to increase the frequency of contact with fresh water to be treated.

Therefore, when actually installed in a treatment tank, a large number of tree-like carriers are suspended at appropriate intervals on a suitable support member and immersed in sewage.

[0007]

Generally, in a purification facility using a microorganism carrier of this type, the ability of microorganisms to easily adhere to the microorganism carrier and a high oxygen supply efficiency enhance the purification ability. Therefore, it is important that the microbial carriers have appropriate intervals, that the liquid accompanying aeration flows properly, and that oxygen is sufficiently supplied to all corners.

On the other hand, unless the volume occupied by the microbial carrier per unit volume is large, the microbial carrier does not exhibit sufficient purification ability. Therefore, as long as a conventional tree-like carrier is used, an extremely large number of arrangements are required.

[0009] That is, regarding the conventional tree-shaped carrier, dead space is formed between adjacent tree-shaped carriers because sewage flows without contacting the tree-shaped carrier. If this is not solved, it is necessary to closely arrange the tree-like carriers, and therefore, it is necessary to use a large number of tree-like carriers, which significantly increases the cost.

When a tree-shaped carrier is used, it must be knitted individually and intricately, which is not suitable for mass production. Further, it is necessary to attach each tree-like carrier to the support member one by one, and the assembly cost is too large to be ignored. Moreover, after long-term operation, it is necessary to remove the microorganisms adhering to each tree-like carrier together with the adhered contaminants or replace them with new tree-like carriers. It is not appropriate from the aspect.

[0011] Accordingly, a main object of the present invention is to provide a microorganism carrier and a carrier unit which are suitable for mass production, satisfy the conditions under which microorganisms can be actively activated, are low in cost, and are excellent in maintenance.

[0012]

According to the first aspect of the present invention, there is provided a microorganism carrier installed in contact with sewage for purification of sewage, wherein the microorganism carrier is spaced apart in a first direction. A plurality of trunks substantially parallel to each other, and a number of connecting portions connecting the adjacent trunks at intervals in a second direction substantially orthogonal to the first direction, and are generally planar. A plurality of loop portions projecting from the surface of the planar portion are provided at intervals in the second direction in each of the trunk portions, and the trunk portion, the connecting portion, and the loop portion are provided. Is a microorganism carrier for sewage purification characterized in that at least the connecting portion and the loop portion are formed by a single yarn or a bundle yarn.

[0013] The invention according to claim 2 is a microorganism carrier installed in contact with sewage for purification of sewage, comprising a plurality of substantially parallel trunks spaced in a first direction.
A plurality of connecting portions connecting the adjacent trunks at intervals in a second direction substantially orthogonal to the first direction;
An overall planar planar portion is formed, and in each of the trunk portions, a large number of loop portions protruding from the surface of the planar portion are provided at intervals in the second direction.
The connecting portion and the loop portion are formed by a single yarn or a bundle yarn, and the yarn forming the connecting portion and the loop portion is continuous with a yarn in a first direction, and is woven with a yarn extending in a second direction of the trunk portion. A microorganism carrier for purifying sewage, characterized in that the trunk is formed by the above-mentioned process.

In these embodiments, the loop portions can be formed so as to protrude from both surfaces of the planar portion.

According to a fourth aspect of the present invention, there is provided a carrier unit having a microorganism carrier installed in contact with sewage for purification of sewage and a support member for holding the microorganism carrier; A plurality of trunks that are substantially parallel at intervals in one direction, and a number of connecting parts that connect the adjacent trunks at intervals in a second direction orthogonal to the first direction. A planar planar portion is formed, and in each of the trunk portions, a large number of loop portions projecting from the surface of the planar portion are provided at intervals in the second direction, and the trunk portion is connected to the trunk portion. At least the connecting part and the loop part of the part and the loop part are formed by a single yarn or a bundle yarn; the support member supports the microorganism carrier at least at the upper and lower parts of the microorganism carrier, and the support member Installation in sewage It is a microbial carrier unit for dirty water, characterized in that constitute the.

On the other hand, a microbial carrier according to another aspect of the present invention is a microbial carrier installed in contact with sewage for purification of sewage. After bundling the fiber yarns and bundling them with a fixed band at predetermined intervals in the longitudinal direction to form a yarn bundle, giving the yarn bundle a processing condition under which the shrinkable yarn shrinks. A microorganism carrier for sewage purification, characterized in that the shrinking yarn is shrunk by the method, and the plurality of fiber yarns are swollen between the respective fixed bands.

A microbial carrier according to another aspect of the present invention is a microbial carrier installed in contact with sewage for purification of sewage, and is provided with a shrinkable yarn along a first direction. A plurality of fiber yarns are arranged in a plane while mixing the yarns at a predetermined interval, and at a predetermined interval in the first direction, along a second direction substantially orthogonal to the first direction. After the shrinkable yarn and the fiber yarn are fixed by the provided fixing member to form a sheet-like sheet, a processing condition for shrinking the shrinkable yarn is given to the sheet, so that the shrinkable yarn is contracted. Wherein the plurality of fiber yarns are swelled between the fixing members.

A microorganism carrier unit according to another aspect of the present invention is a carrier unit having a microorganism carrier installed in contact with sewage for purification of sewage and a support member for holding the microorganism carrier. A plurality of fiber yarns are arranged in a plane along a first direction, and the microorganism carrier is substantially spaced from the first direction at a predetermined interval in the first direction. The fibrous thread is fixed by a fixing member disposed along a second direction perpendicular to the sheet member to form a sheet-like sheet, and the microorganism carrier is at least in the upper and lower portions of the fixing member While being supported by the support member, the connecting portion interval of the fixing member with respect to the support member is made smaller than the distance between the fixing members in the sheet state, so that the plurality of fiber yarns are laterally located between the fixing members. It mounted in a state where the out and the support member is a microbial carrier unit for dirty water, characterized in that constitute the locating means into the sewage.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be clarified while describing embodiments thereof.

<< First Embodiment >> FIGS. 1 to 3 show a first embodiment. That is, the microorganism carrier comprises a plurality of substantially parallel trunks B spaced apart in a first direction (in the installed state in the first embodiment, in the horizontal direction) and substantially parallel to the first direction. A plurality of connecting portions C connecting the adjacent trunk portions B, B at intervals in a second direction orthogonal to each other constitute a planar surface portion as a whole.

In each of the trunks B, B,..., A large number of loops R projecting in the third direction from the surface of the planar portion are provided at intervals in the second direction. The connecting portion C and the loop portion R are formed by a single yarn or a bundle yarn (hereinafter, simply referred to as “thread” unless otherwise noted), and the yarn forming the connecting portion C and the loop portion R is in the first direction. The stem B is woven with the yarn 2 extending in the second direction of the stem B.

More specifically, as shown in FIG. 1, loop portions 1a, 1a are formed in the middle of one weft 1 of a certain length.
, And a linear connecting portion 1b is formed up to the adjacent loop portion 1a. In addition, at the roots of the loop portions 1a, 1a, the warp yarn 2 is used to knit it with an appropriate knitting structure so as to be integrated with the end of the connecting portion 1b. This knitting state is shown in FIG.

In order to install the microorganism carrier in the septic tank, as shown in FIG. 3, for example, each warp yarn 2, 2,... Is connected to the upper support member 10U and the lower support member 10L. The microorganism carrier unit X is constituted.

The microorganism carrier units X are installed in the septic tank 3 in parallel and in a staggered configuration as a whole, for example, as shown in FIGS. Raw sewage W0 of rivers and lakes is introduced into the septic tank 3, and is aerated from a number of aeration tubes (not shown) arranged at appropriate positions in the septic tank 3. In this process, a swirling flow is formed from the bottom to the top and partly re-dive to the wastewater. Since aeration is performed in the fluidized state of the sewage, the activity of microorganisms attached to the carrier is activated, thereby purifying the sewage. The purified water W1 is returned to rivers and lakes again.

Here, as shown particularly in FIG.
In the microorganism carrier of the present invention, the trunk portion B, the connecting portion C, and the loop portion R can form an effective planar arrangement with little dead space in relation to the adjacent microorganism carrier.

By the way, the loop portion R has the effect of increasing the frequency of contact with flowing sewage.
There is a tendency that dirt also adheres and the loop portion R hangs down from the overhanging state as shown in FIG. This tendency is particularly fatal in conventional tree-like carriers. That is, the loop portion hangs down and the trunk B
When it comes along, it becomes just one straight thread. The contact area of wastewater cannot be secured. However, in the microorganism carrier of the present invention, even if the loop portion R hangs down, the connecting portion C still extends in the first direction and is disposed at intervals in the second direction. .. Contact the connecting portions C, C,.

In the above embodiment, one loop portion R protrudes from both sides of the planar portion. However, as shown in FIG. Petals can also be formed. As described above, in the present invention, the number of loop portions R is not limited, and may be an appropriate number.

In the above embodiment, the loop portion R
Although the weft yarn is used to construct the yarn, the exclusive yarn 3 different from the weft yarn 1 and the warp yarn 2 can be used as the yarn constituting the loop portion R as shown in FIG.

Further, as shown in FIG. 7, the loop portion can be a double loop of a large loop R1 and a small loop R2. The double loops can be formed alternately, displaced in the second direction.

The method for knitting the carrier of the present invention is not limited.
For example, as shown in FIG. 8, a simple plain weave is formed by weft yarns 1, 1,... Arranged in parallel in a plane in one direction and several warp yarns 2 woven at a predetermined interval in the weft yarn direction. As shown in FIG. 9, the loop portion R can be formed by combining the two warp yarns with each other and integrating them with another yarn or an appropriate bundling member (these are not shown).

In forming each of the trunks B,
In addition to binding the warp yarn 2 to the weft yarn 1 with a binding material, for example, another yarn, the warp yarn 2 may be knitted with the weft yarn 1 and further fixed or woven with another band or ribbon interposed therebetween. It is also possible. In addition, in the drawing, each executive B
Note that is shown conceptually.

In the first embodiment, the loop portion R
Are arranged at an interval in the height direction (second direction), but as shown in FIG.
The loop portions R can be arranged at intervals in the horizontal direction. In this case, the support member 10U is
Can be attached to

As shown in FIG. 11, the carrier unit X can be arranged in the septic tank 3 in a twill weave arrangement in plan view.

The combinations of the above examples can be appropriately performed.

As the yarn of the present invention, a polyester yarn, a nylon yarn or the like can be used, but it has been found that a vinylidene chloride resin yarn is most suitable from the viewpoint of adhesion of microorganisms.

The microorganism carrier for purifying sewage of the present invention or a unit thereof can be directly installed in a river or a lake in addition to being installed in a septic tank.

On the other hand, according to the present invention, a plurality of trunks substantially parallel to each other at intervals in the first direction and the adjacent stems at intervals in a second direction substantially orthogonal to the first direction are provided. And a plurality of connecting portions connecting the trunk portions to each other, a planar surface portion is formed as a whole, and in each of the trunk portions, a loop portion projecting from the surface of the planar portion is formed in the second direction. Many are provided at intervals.

Therefore, depending on the size of the loom, continuous knitting can be usually performed in the width direction of a maximum of about 2.5 to 3.0 m, and as a result, compared with the case where a conventional tree-like carrier is manufactured, And mass production is possible.
From a wide one, it can be cut to an arbitrary width to obtain a short one. In this way, it is possible to reduce the cost when obtaining the target microorganism carrier.

<< Second Embodiment >> FIG. 12 shows a second embodiment. That is, the microbial carrier P according to the present embodiment has a large number of fiber yarns 5, 5,... Bundled by the fixing bands 6, 6,.
As shown in FIG. 13 and FIG. 14, a specific manufacturing method is
Along with one shrink yarn 4 composed of a single yarn or a bundle yarn arranged substantially at the center, a number of fiber yarns 5, 5... Arranged around the bundle are bundled and fixed at predetermined intervals in the longitudinal direction. After being bound by the bands 6, 6,... To form a yarn bundle A, the shrinkable yarn 4 is shrunk by giving processing conditions for the shrinkable yarn 4 to shrink to the yarn bundle A, A number of fiber yarns 5, 5,.
It is manufactured by a process of bulging outward between six spaces.

As the shrinkable yarn 4, for example, an ultra-high shrinkage polyester fiber commercially available under the trade name of Soc Latex (trademark) [Teijin Co., Ltd.] can be used. The fiber has a property of shrinking to 40 to 50% by immersion in warm water of 80 ° C. or more (wet heat treatment) or by dry heat treatment of 100 ° C. or more. For reference, the shrinkage characteristics are shown in FIGS. 22A and 22B (excerpted from the catalog of the same product).

On the other hand, the fiber yarns 5, 5,.
After heating, the length L between the fibers 6 becomes _LR (<L), and the fiber yarns 5, 5 ... bulge outward.

In the second embodiment, once the yarn bundle A
Since the fiber yarns 5, 5,... Are bulged after being manufactured,
Continuous mass production becomes possible on the factory line. Also,
Since the fiber yarns 5, 5.. To which the microorganisms adhere are in a swollen shape, even if the microorganisms adhere to each of the fiber yarns 5, 5,. The problem that the loop portion hangs down to form a single thread and the purification ability is significantly reduced can be solved.

Incidentally, a plurality of the contracted yarns 4 may be arranged in the yarn bundle A, and the arrangement position thereof is also arbitrary. 15 to 17 show an example in which eight contracted yarns 4, 4,... Are arranged at the outer peripheral position of the yarn bundle A.

<< Third Embodiment >> FIGS. 18 and 19 show a third embodiment. That is, as shown in FIG. 18, a large number of fiber yarns are mixed in the first direction (horizontal and horizontal directions in the embodiment of FIG. 18) while shrinking yarns 4, 4,. Article 5,
Are arranged in a plane, and are arranged at predetermined intervals in the first direction along a second direction substantially orthogonal to the first direction. After fixing the shrinkable yarns 4, 4,... And the fiber yarns 5, 5,.
Processing conditions under which the shrinkable yarns 4, 4,...
By giving a dry heat of 00 ° C. or more, the shrinking yarns 4, 4
Are contracted, and as shown in FIG. 19, the large number of fiber yarns 5, 5,.

In the example shown in the figure, warp yarns 7a, 7a... Made of a single yarn or a bundle yarn are woven as the fixing member 7, and the shrinking yarns 4, 4,. However, in place of the warp 7a, a plastic band or the like may be used as well as a cloth band or a ribbon. In short, any material can be used as long as the shrinkable yarns 4, 4,... And the fiber yarns 5, 5,.

The above example is assumed to be mounted in the state shown in FIG. 19, but the contraction yarns 4, 4,... And the fiber yarns 5, 5,.
May be mounted in a state rotated by 90 degrees. In this case, the shrinkable yarns 4, 4,... Are attached to the support member.

In the above-mentioned example, the fiber yarns 5, 5,... Are bulged in pairs on both sides at the position of the shrinking yarns 4, 4, but of course, the fiber yarns 5, 5,. Alternatively, it may be formed in a wavy shape when viewed in plan.

In the third embodiment, after the sheet-like sheet D is manufactured, the fiber yarns 5, 5,... Are bulged. The hit and the loom enable continuous mass production. Also,
Even if microorganisms adhere to the swollen fiber yarns 5, 5,..., The curtain state is still maintained, so that the purification ability is exhibited for a long period of time.

<< Fourth Embodiment >> Next, FIGS. 20 and 21 show a fourth embodiment. That is, as shown in FIG. 20, in the microorganism carrier according to the present embodiment, a large number of fiber yarns 5, 5,... Are arranged in a plane along the first direction (in this example, the horizontal direction). With
A plurality of warp yarns 7a, 7a,... Arranged along a second direction substantially orthogonal to the first direction at a predetermined interval in the first direction are used to fix the fiber yarn. By fixing the strips 5, 5,..., A sheet-shaped sheet E is formed. When the sheet E is attached to a support, the upper and lower portions of the fixing member 7 are respectively moved upward as shown in FIG. The supporting member 11 and the lower supporting member 12 are used to support each other, and the distance S _R between the connecting portions of the fixing member 7 to the upper and lower supporting members 11 and 12 is larger than the distance S between the fixing members 7 and 7 in the sheet state. The fiber yarns 5, 5,... Are mounted in a state where the fiber yarns 5, 5,.

In the case of the fourth embodiment, as in the case of the third embodiment, since it is manufactured as a sheet-like planar body D, mass production can be continuously performed by a loom. Also, since the fiber yarns 5, 5 ... are bulged to the side, the contact area is increased and the purification ability is high, and even if microorganisms adhere to the fiber yarns 5, 5, ..., the curtain state is still maintained. Therefore, the purification ability is exhibited over a long period of time.

[0051]

As described above, according to the present invention, it is possible to obtain a microbial carrier which is suitable for mass production, satisfies conditions under which microorganisms can be actively activated, has low cost, and is excellent in maintenance.

[Brief description of the drawings]

FIG. 1 is a plan view of a microorganism carrier according to a first embodiment.

FIG. 2 is a perspective view thereof.

FIG. 3 is a front view of the unit.

FIG. 4 is a plan view of an example of an arrangement of microbial carriers.

FIG. 5 is a plan view of an example of installation of a unit group in a septic tank.

FIG. 6 is a plan view of another example of a microorganism carrier.

FIG. 7 is a plan view of another example of a microorganism carrier.

FIG. 8 is a perspective view of a carrier in a preparation stage.

FIG. 9 is a plan view of the assembling example.

FIG. 10 is a perspective view of an example of hanging a microorganism carrier in a different mode.

FIG. 11 is a plan view of another example of the installation of the unit group in the septic tank.

FIG. 12 is a side view of a main part of the microorganism carrier according to the second embodiment.

FIG. 13 is a side view of a main part at the time of the yarn bundle.

FIG. 14 is a cross-sectional view of a main part after a bulging process of a fiber yarn.

FIG. 15 is a side view of a main part at the time of a yarn bundle according to another example.

FIG. 16 is a view taken along line XV-XV in FIG. 15;

FIG. 17 is a cross-sectional view of a main part after swelling of a fiber yarn according to another example.

FIG. 18 is a front view of a main part of the microorganism carrier according to the third embodiment.

FIG. 19 is a perspective view of a main part after the fiber yarn has been expanded.

FIG. 20 is a front view of a main part of a microorganism carrier according to a fourth embodiment.

FIG. 21 is a perspective view showing a state after attachment to a support.

FIG. 22 (A) is a diagram showing shrinkage yarn shrinkage characteristics during wet heat treatment, and FIG. 22 (B) is a diagram showing shrinkage yarn shrinkage characteristics during dry heat treatment.

[Explanation of symbols]

1 ... weft yarn, 2 ... warp yarn, 3 ... another yarn, 4 ... shrinkage yarn, 5 ...
Fiber thread, 6 ... fixed band, 7a ... warp, 7 ... fixed member, 11 ... upper support member, 12 ... lower support member, B ... trunk, C ... connecting part, R ... loop part, X ... unit

Claims (7)

[Claims] 1. A microorganism carrier installed in contact with sewage for purification of sewage, comprising: a plurality of substantially parallel trunks spaced apart in a first direction; A plurality of connecting portions that connect the adjacent trunk portions at intervals in a second direction that is substantially orthogonal to each other to form a generally planar surface portion. A large number of loop portions projecting from the surface of the planar portion are provided at intervals in the second direction, and at least the connecting portion and the loop portion of the trunk, the connecting portion, and the loop portion are formed by a single yarn or a bundle yarn. A microorganism carrier for purifying sewage, characterized in that: 2. A microorganism carrier installed in contact with sewage for purification of sewage, comprising: a plurality of substantially parallel trunks spaced apart in a first direction; A plurality of connecting portions that connect the adjacent trunk portions at intervals in a second direction that is substantially orthogonal to each other to form a generally planar surface portion. A large number of loop portions projecting from the surface of the planar portion are provided at intervals in the second direction, and the trunk portion, the connection portion and the loop portion are formed by a single yarn or a bundle yarn, and the connection portion and A microbial carrier for sewage purification, wherein a thread constituting a loop is continuous in a first direction and is woven with a thread extending in a second direction of the trunk to constitute the trunk. 3. The microorganism carrier for sewage purification according to claim 1, wherein said loop portion is projected from both surfaces of said planar portion. 4. A carrier unit having a microorganism carrier installed in contact with sewage for purification of sewage and a support member for holding the microorganism carrier; wherein the microorganism carriers are spaced apart in a first direction. A plurality of substantially parallel stems and a plurality of connecting portions for connecting the adjacent stems at intervals in a second direction orthogonal to the first direction, so as to have a generally planar surface. In each of the trunks, a large number of loops protruding from the surface of the planar part are provided at intervals in the second direction, and at least one of the trunk, the connecting part, and the loop is formed. The connecting portion and the loop portion are formed by a single yarn or a bundle yarn; the supporting member supports the microorganism carrier at least at the upper and lower portions of the microorganism carrier, and the supporting member is provided in a sewage system. Make up Microorganism carrier unit for dirty water, characterized. 5. A microorganism carrier installed in contact with sewage for purification of sewage, comprising a plurality of fiber yarns bundled together with one or a plurality of contraction yarns, and a predetermined spacing in a longitudinal direction. After forming a yarn bundle by binding with a fixed band in the above, the shrinking yarn is shrunk by giving processing conditions for shrinking the shrinking yarn to the yarn bundling body, and the multiple fiber yarns are shrunk. A microorganism carrier for purifying sewage, characterized in that it is swollen between fixed bands. 6. A microbial carrier installed in contact with sewage for purification of sewage, wherein a plurality of fiber yarns are planarized while mixing shrinkage yarns at predetermined intervals along a first direction. The shrinking yarn and the fiber yarn are fixed by a fixing member arranged along a second direction substantially orthogonal to the first direction at a predetermined interval in the first direction. After fixing to form a sheet-like sheet, the shrinkable yarn is shrunk by applying processing conditions for shrinking the shrinkable yarn to the sheet, and the large number of fiber yarns are fixed between each fixing member. A microorganism carrier for sewage purification characterized by being swollen in the above. 7. A carrier unit having a microorganism carrier installed in contact with sewage for purification of sewage and a support member for holding the microorganism carrier; wherein the microorganism carrier is arranged along a first direction. A fixing member in which a number of fiber yarns are arranged in a plane and arranged at a predetermined interval in the first direction along a second direction substantially orthogonal to the first direction; The fibrous thread is fixed to form a sheet-like planar body, and the microorganism carrier is supported by the support member at least at the upper and lower portions of the fixing member, and the microorganism carrier is supported by the fixing member with respect to the support member. By reducing the distance between the connecting portions from the distance between the fixing members in the sheet state, the plurality of fiber yarns are attached in a state of bulging laterally between the fixing members, and the support member is disposed in the sewage. Installation A microorganism carrier unit for sewage purification characterized by comprising a placing means.