JPS623784A - Carrier for microorganism - Google Patents

Abstract

PURPOSE:To inhibit the formation of large colonies of microorganisms at the stem part of a carrier, to improve the flow of liquid and to facilitate the fixation and proliferation of microorganisms, by using filaments as a carrier and planting the filaments to a stem in a manner to form large U-shaped loops. CONSTITUTION:Each weft yarn 6<1>...6<9>, 7<1>...7<9> is extended far beyond the stem 8, bent gradually forming a large loop R and introduced again into the stem 8 to form a large U-shaped loop. The weft yarn is e.g. polyvinylidene chloride, nylon, carbon fiber, glass fiber, stainless steel fiber, etc., and the material of the stem 8 is preferably polypropylene or metallic fiber having smooth surface. The development of large colonies of microorganisms and the stagnation of the liquid near the stem can be prevented by the use of the above structure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a process for oxidizing organic substances in a liquid phase by utilizing the biological activities of various microorganisms and living organisms, and the present invention relates to a process for oxidizing organic matter in a liquid phase, and is aimed at preventing the colonization and proliferation of microorganisms. The present invention relates to a structure of a microbial carrier that allows the microorganism to exhibit its activity to a high degree and over a long period of time.

Conventionally, this kind of carrier has an oval ring (2) radially surrounding the core material (II) as shown in Figure 1 ←) and ρ).
A large number of needle-shaped objects (2') are planted radially around the hollow cylindrical core material (1') as shown in the figure. There are 3 types of needles, etc., but Yuzure also acts as a carrier.I) Since the diameter or the length of the needle-like protrusions is short and each protrudes radially, it is difficult to plant near the outer part of the core material (3). Due to the large installation density and structure, there is a tendency to obstruct the flow of liquid in the area, but if microorganisms colonize the contact area and form a colony, the flow of liquid becomes increasingly difficult, and the area where liquid does not flow becomes The active microorganisms gradually expand and die, and only inactive microorganisms proliferate in their place. This state progresses over time, and eventually, as shown by the shaded area in Figure 2, the area occupied by inactive microorganisms becomes dominant, and active microorganisms occupy a small area in the periphery;
cease to exist.

In this case, the absolute number of active microorganisms colonizing the carrier decreases, and the desired treatment efficiency will not be achieved.

Therefore, there is a need for a carrier that has a structure that prevents active microorganisms from forming localized large communities and allows liquids to freely flow and come into contact with each part of the carrier.

The present invention has been proposed to solve the above-mentioned problem, and is made of organic materials such as polyvinylidene chloride and nylon, inorganic materials such as carbon and glass, or metal materials such as stainless steel and aluminum as a carrier. Single or multiple fiber threads are planted to form a large U-shaped loop around the backbone, which prevents the formation of large microbial communities on the backbone. In addition, it also improves the flow of liquid and facilitates the colonization and proliferation of microorganisms.

The following description will be given with reference to an embodiment of the present invention shown in FIG.

As shown in the figure, six warp threads (4") - (4') running in a zigzag pattern with the same pitch and the same waveform in the center overlap diagonally while shifting their positions to form small diamond-shaped squares ( 5).The warp threads (
41) ・(4') 9 weft threads (6”) along t
・(6') runs, and then this weft (6”) −・・(
6”) in the opposite direction with the same number of weft threads (71
)-(7') run to form a braided fiber called cylindrical lace knitting.

In this specification, the part where the knitting structure is formed by the warp and weft of this tubular lace knitting is named the backbone (8). As you can see from the figure, the difference from the normal tubular lace knitting structure is that each weft < 61. ,・69) (71...79) is greatly extended from the base (8) to the outer part, creating a gentle arc @
It enters the base frame (8) again while drawing a large U-shape. Each weft has multiple squares (5)
By passing inside along the warp threads (41...46), it contributes to the formation of the structure of the trunk (8), and later on, it is pulled out again in the opposite direction, forming a similar arc, and re-entering. It repeats the figure 8 movement of transformation. In the illustrated example, each weft yarn repeatedly enters and exits every 6 stitches of the backbone (8).

Valley thread (6") - (6') (7") - as above
(7") are each independent and form a gentle arc (8) outward from the trunk (8), but the weft thread (61)
・Weft (71) running in the opposite direction to (6') - (7')
As a result of intersecting each other, the planar ζko has a ■-shaped gentle arc (111) with a continuous number of syllables (111), which has a large number of meshes (9) formed by ji-joins, is overhanging the outside of the base (8). It looks like there is.

In this specification, this net-like overhang is named the above-mentioned V-shaped gently arched (R) integrated net wing (9). In addition, each weft (6
”)-(6') (7") and -(7') each have a diameter of approximately 5
It is a non-twisted multi-filament yarn made of Mikun's vinylidene chloride single pongee fibers, and microorganisms colonize and proliferate on one to several of these ultra-fine single fibers that form the above-mentioned slow arc (8).

In the illustrated embodiment, the total length of the U-shaped gentle arc (6) is approximately 651 gj, and the distance between both ends is approximately 35111 gj (8
) is approximately 101 fl, but there is no limit to the total length of the gentle arc (8) as long as it maintains a U-shape in the liquid.
It is preferable that the distance between the two downward legs is at least 35d, preferably 5- or more, and the base (8) may have a size that allows the gentle arc (8) to be fixed.

The material for the backbone (8) is preferably a microorganism 'Fj, a material that does not easily turn purple, such as polypropylene, or a metal with a smooth surface.

From the above description of the embodiment 71), it is clear that the net wing (9)
)? The loose arc of the thread that forms (each field is an independent entity, and the legs at both ends maintain a sufficient distance to form the base (8)
Because they are planted in the ground, it is possible to prevent the appearance of large microbial communities and the stagnation of liquid in the vicinity of the trunk. Therefore, in this respect as well, the slow arc (6) inhibits the development of the community and facilitates the flow of liquid.In other words, the slow arc (6) can allow active microorganisms to colonize and multiply, resulting in partial death and It is possible to almost completely eliminate the deficiencies of known carriers, such as an increase in inactive bacteria and a concomitant decrease in processing capacity.Furthermore, another feature of the carrier according to the present invention is that it has relatively long slow arcs (8 ), the number of active microorganisms obtained can be increased in an airborne manner, and by adding modifications as will be described later, it can be immediately compared to known examples.
Is there a significant effect using i1 conversion? It is something that can be demonstrated.

As is clear from the above (711), the basic structure of the carrier according to the present invention is shown in the examples, and it is not a matter of making it a lace knit. It is sufficient that the backbone can hold the U-shaped loop fixedly, so for example, as shown in FIG. It can also be used internally by twisting the S-shaped wires between multiple metal wires to achieve the desired purpose. To increase contact opportunities, use a gentle arc formed by a U-shaped loop (8)
Is it located near both ends? By shifting and bending, the net X (9) 'a' is made into three-dimensional form as a whole. However, such bending and fixing depends on the physical properties of the yarn, so it is not always possible, nor is it easy to process.

Ministry of the invention carrier of the invention on this issue? Core (8
) is proposed to be fixed by deforming the mesh blade (9) into a spiral shape as shown in FIG. If the liquid to be in contact flows in the direction of the axis of the base (8) (see Fig. 11), in the state shown in Fig. 5, the liquid flow only flows along the surface of the net wing (9), but in a spiral direction. By forming a spiral shape, the liquid also flows inside the huge cylindrical mesh blades (9) (see Figure 12C), and the chance of contact between the carrier and the liquid is proportional to the cross-sectional area of the spiral. As a means to spirally transform the increasing 0 network A (9), the simplest method is to transform the basic structure (
8), and the method of fixing the twist is, for example, as shown in Figure 6, by sewing the aluminum neem board (11)'& this aluminum neem board (1
1) together with the base (8) (by twisting it, the net wing (9)
The loops are spirally shaped and at the same time form gentle arcs (8), which are expanded radially around the base 1 and fixed in that state.

Of course, as in this example, when thermoplastic yarns such as polyvinyl chloride are used for both the warp and the weft, after forming the thread (by simple twisting without using an aluminum plate), (8) can be heated and fixed by injecting high temperature steam or air, for example. The core (8)
)# Injecting high-temperature steam, air, etc. also means that, if the slow arc (8) is made of multi-filament threads, the constituent threads are fixed in a scattered state.

Of course, the means for making fi+ffl,iU (9) three-dimensional are not limited to the above example. Without twisting, as shown in Figure 7, while maintaining the net wings (9) in a horizontal direction with respect to the spiral shaft, twist the main shaft (8) (this also has a large spiral staircase M on both sides). As shown in Figure 8, the net wing (9
) vertically to perform a spiral movement of the same stock, No. 9
11 As shown in this figure, the net (9) is double twisted (strained and twisted), or as shown in Figure 10, it is twisted and rounded with one width (see 5 & I) and the base (8) itself. However, there are some that have an even larger spiral motion (11ili force).

In particular, as shown in Figure 2g10, double (2)lk It shading results in an increase in the diameter (volume) of the carrier while maintaining the shape and density of the gentle arcs (6) in each section.

The uninvented carrier having the net wings (9) formed in a spiral shape as described above is subjected to the folding treatment fL (13) in the limited treatment tub (12) of the waste C1 as shown in FIG. j Street conversion style (14
) is particularly effective in terms of performance performance, in addition to being able to physically reduce the length in the kneading direction.

Generally, when microbial carriers are established in the treatment tank (12), the carrier acts as an obstacle to the winding R4 flow.
A part of the winding laminar flow (14) is divided into a descending branch flow (15), but this descending R4 flow (15) is a side flow (15') of the winding laminar flow (14).
Is it only the center that comes into contact with the carrier and descends? (IIS, there is no contact between the mainstream part and the carrier. In particular, in the carrier of the above-mentioned known structure, the yarn density near the outer peripheral part (3) of the core material is extremely low. The infiltrating liquid flows into the side stream (1
5) shows a tendency to sag regardless of the flow. This tendency increases as the servant organisms settle and proliferate on the threads, and eventually the area becomes blocked with no fluid flow at all.

This is said to be the reason why microorganisms die from the center of the carrier toward the outer periphery. (See Fig. 12, 11) However, when using the support spiral network blade (9') according to the present invention 1, the descending branch flow (15) becomes a spiral network blade as shown in Fig. 12 (9') Since the flow is divided into the flow that descends perpendicularly within the internal mesh opening and the flow that spirals downward guided by the spiral, most of the threads that make up the U-shaped gentle arc @ It must have the opportunity to come into contact with liquid in almost all parts and on its entire circumference.

When compared with the known example, in the known example, only the outer periphery of the carrier is given one contact opportunity for one downward branch flow, whereas in the carrier of the present invention, the carrier 'jr-NN is formed. All yarns will be given one opportunity to come in contact with each other, regardless of whether they are inside or outside.

As is clear from the above explanation, forming the net pattern (9) in a spiral or double spiral shape means that the downward branch flow (15) is formed in a spiral or double spiral shape.
This means that the flow that flows vertically down inside the spiral network R (9') through the network and the swirling flow that is induced by the spiral portal, therefore, such a function as a whole can be expressed as follows. If this is to be realized, the structure of the spiral gate stem itself does not need to be a collection of U-shaped loops forming a gentle arc (8) as shown in this example, and threads can be arranged in any frame. A special mesh or a known square or polygonal mesh may be used, and the Kadoma itself may also be a 13-layer multi-winged carrier.

It is sufficient to have a mesh size that allows liquid to pass through freely and that prevents the appearance of a large community of microorganisms.

As detailed above (the present invention dramatically increases the chances of contact between the liquid to be treated and the microbial carrier by creating a completely new structure for the carrier), this has the following drawbacks: From this point of view, it means saving the driving energy of the liquid to be treated and the fluidizing mechanism, and on the other hand, it means reducing the amount of dead active microorganisms. It will be maintained.

As mentioned above, the microbial carrier according to the present invention achieves a high-speed and highly efficient decomposition ability that is at least 20 times higher than that of known examples, regardless of the organic matter concentration of the liquid to be treated, but the present carrier is limited to organic matter decomposition. It is useful as an active microbial carrier in various biochemical reactions.

[Brief explanation of drawings]

Figure 1 shows a, 4. c Xd Structural diagram of known carrier,
Fig. 2 is a growth state diagram of microorganisms in relation to Fig. 1 and 6, Fig. 3 is a tissue diagram of an embodiment of the carrier of the present invention, Fig. 4 is a basic configuration diagram of the carrier of the present invention, and Figs. be. Code (1) (1) is the core material (2) is the oval ring (2) is the needle-shaped protrusion (3) is the outer periphery of the core material (41)... - (4') is the warp, (5) is the square , (61)・-(6'), (71)
...(7') is the weft, (8) is the base (9) is the net line, (9
') is a spiral gate stem, (1o) is a tape, (11) is an aluminum plate, (12) is a processing tank, (13) is a processing liquid, (
14) is a winding laminar flow, (15) is a descending branch flow, Fig. 1 α C-shape? Figure 辅3 times closed q-Kunierte 1 side 6 Bokatsu 7 times Figure 2 90 Darkness 109 斥11 α, L. Knee R no 3 times 0

Claims (1)

[Claims] A microorganism carrier characterized by having a large number of U-shaped loops planted on its backbone.