JPH07275880A - Fixed bed element for water treatment and its production - Google Patents

Abstract

PURPOSE:To obtain a fixed bed element for water treatment capable of being easily produced and good in the attaching workability to the frame member of a fixed bed. CONSTITUTION:A reed screen like fabric consisting of a plurality of warp yarns 11 and a large number of weft yarns 12 is formed and the attaching parts 15 to t,he frame member of a fixed bed are formed to both ends in the longitudinal direction of the warp yarns 11. The parts of the weft yarns 12 between the adjacent warp yarns 11 are cut over the longitudinal direction of the warp yarns 11. The intermediate parts in the longitudinal direction of the warp yarns 11 are twisted to impart a twist to the warp yarns 11 longitudinally not only to spirally arrange a large number of the cut weft yarns 12 around the respective warp yarns 11 but also to allow them to radially protrude from the warp yarns. The twist state given to the warp yarns 11 is held by a wire 18.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a fixed bed element for water treatment and a method for producing the same.

[0002]

2. Description of the Related Art FIG. 5 shows a schematic structure of water treatment equipment such as an aeration tank. A fixed bed 3 is installed inside the tank main body 2 that stores the water 1 to be treated, and a contact material for aeration treatment is arranged on the fixed bed 3. An air diffuser 4 is arranged in the water, and air bubbles 5 ejected from the air diffuser 4 into the water 5
Rises due to the action of buoyancy to generate a water flow 6 in the tank, and the water flow 6 passes through the fixed bed 3 to perform a predetermined treatment.

As the above-mentioned contact material, a material having a plurality of contact materials in a frame of a fixed bed is generally used. As an example of this contact material, a large number of tufted yarns are radially arranged in the length direction of the core material. The one that is projected is known. The contact material composed of such a core material and tufted yarn has advantages that the tufted yarn is oscillated so that the sludge can be evenly attached and that excess sludge is not attached.

When manufacturing a contact material having such a structure, a plurality of core materials and a plurality of tufted threads are weaved, and each tufted thread is cut at an intermediate portion between the core materials to form a core material. Is generally twisted in one direction to cause each tuft to protrude radially.
Furthermore, after shaping this contact material to an appropriate length by cutting etc., by attaching both ends to the frame,
A given fixed bed is constructed.

[0005]

However, according to such a conventional device, in order to radially project all the tufted yarns over the entire length of the core material, the core material is twisted many times. However, there is a problem in that it takes time to manufacture it. Further, when constructing the fixed floor, it is necessary to use an appropriate attachment tool to attach both ends of each contact member to the frame body, which causes a problem that the workability is not good.

Therefore, the present invention provides a fixed bed element for water treatment which solves the above problems, can be easily manufactured, and has good workability in mounting the fixed bed to the frame, and a method for manufacturing the same. With the goal.

[0007]

In order to achieve this object, a fixed bed element for water treatment of the present invention has a pair of fixed-bed mounting portions to a frame body which are arranged at a distance from each other. A plurality of warp threads are arranged in parallel with each other, a large number of weft threads of a predetermined length are woven into each warp thread, and the twist applied to the middle of each warp thread in the longitudinal direction gives the warp thread a twist in the longitudinal direction. As a result, the plurality of wefts are spirally arranged around each warp and radially protruded from each warp, and a fixture for holding the twisted state given to each warp is provided. It was done.

In the method for producing a fixed bed element for water treatment of the present invention, a blind-shaped woven fabric composed of a plurality of warp threads and a large number of weft threads is formed, and a fixed bed frame is provided at both ends in the length direction of the warp threads. Of the warp yarns between the adjacent warp yarns are cut along the lengthwise direction of the warp yarns, and a twist is added to the middle portion of each warp yarn in the lengthwise direction to make the warp yarns in the lengthwise direction. By giving a twist over, a large number of cut wefts are arranged spirally around each warp and radially protruded from each warp, and the twisted state given to each warp is held by a fixture. is there.

[0009]

According to such a construction, by twisting each of the plurality of warp yarns in the middle in the longitudinal direction to impart twist,
Since a large number of wefts are arranged in a spiral around the warp and radially protruded from the warp, and the twisted state is only held by the fixing tool, it can be easily manufactured, especially compared with the conventional one. The element is obtained by applying only half the number of twists. Further, since the plurality of warp threads are passed between the pair of attachment sections, the attachment sections and the plurality of warp threads are integrally configured, and the element is easily attached to the frame body by using the attachment sections. It is attached.

[0010]

EXAMPLE When manufacturing a fixed bed element for water treatment of the present invention, first, as shown in FIG. 1, a blind-shaped fabric 13 is formed by a plurality of warp threads 11 of a predetermined length and a number of weft threads 12. To manufacture. That is, the warp yarns 11 are arranged sparsely with a predetermined space therebetween, and the weft yarns 12 are arranged closely with almost no space therebetween. Specifically, adjacent warp yarns 11 are separated from each other by a distance corresponding to the diameter of the tufted contact material in the manufactured element. Both ends of the weft yarn 12 are laterally protruded from the warp yarn 11 by a length corresponding to the radius of the tufted contact material. It is preferable to use a polyester high-strength yarn or the like for the warp yarn 11, and it is preferable to use an acrylic fiber or the like that is made bulky by high bulk processing for the weft yarn 12.

Once such a woven fabric 13 has been produced, the warp
A cloth 14 such as canvas is applied to the portions of the woven fabric 13 corresponding to both end sides of the fabric 11, and both ends of the woven fabric 13 are sewn in a bag shape together with the garment 14 as shown in FIG. A pair of mounting portions 15 are formed. As shown in the figure, the mounting portion 15 is configured to have a bag shape, that is, a tubular shape in the direction of the weft yarn 12, and both ends thereof are open.

Next, as shown in FIG. 2, adjacent warp yarns 11
The portion of the weft yarn 12 at the intermediate position between them is cut from one attachment portion 15 to the other attachment portion 15, that is, along the length direction of the warp yarn 11. 16 shows the cutting line.

Then, as shown in FIG. 3, a twist is applied to each longitudinal intermediate portion of each warp yarn 11. As a result, twists in opposite directions are formed on both sides of the twisted portion, and the weft yarn 11 extends in the longitudinal direction.
12 are arranged spirally around warp 11 and warp
It will be projected radially from 11.

After the same treatment is applied to each warp yarn 11, the middle portion in the length direction of these warp yarns 11, that is, the twisted portion is tied with a stainless wire 18. This wire
18 is passed between the intermediate portions of the warp yarns 11 and binds the warp yarns 11 at the intermediate portion. This allows each warp 11
Is held in a twisted state as described above, and a plurality of contact materials are formed.

Next, the rod-shaped mounting members 19 are inserted into the respective bag-shaped mounting portions 15 and fixed. The mounting member 19 is arranged so that both ends thereof project outwardly from the mounting portion 15, whereby a fixed floor element 20 for water treatment is provided.
Is configured.

Then, as shown in FIG.
20 are vertically arranged inside the frame body 21, and a plurality of elements 20 are arranged side by side with a distance from each other, and the elements 20 are arranged inside the frame body 21 by utilizing the protrusions at both ends of the mounting member 19. Secure it in place. As a result, the fixed bed is completed as shown in the figure, and it is submerged in the water in the processing tank.

As described above, the plurality of warp yarns 11 are twisted, and then the warp yarns are wound by the wire 18 passed between the warp yarns 11.
The warp yarns 11 can be held in a twisted state only by a simple operation of binding the warp yarns 11. In addition, the plurality of warp threads 11 are passed between the pair of attachment sections 15, so that the attachment sections 15 and the plurality of warp threads 11 are integrally formed. The element 20 provided with the contact material is easily attached to the inside of the frame body 21.

Since the so-called rocking fixed bed is formed by combining the warp yarn 11 to which such a twist is added and a large number of radial weft yarns 12, the sludge adherence is good, and the adhered sludge is simultaneously removed or sludge is removed. There is an advantage that blockage due to Further, since sludge is separated uniformly in the entire fixed bed, there is an effect that the amount of SS flowing out of the system becomes constant.

[0019]

As described above, according to the present invention, by twisting each of a plurality of warps in the middle of the longitudinal direction to impart twist, a large number of wefts are arranged in a spiral around the warp. It is easy to manufacture because it is made to radiate from the warp and is kept in a twisted state by a fixing tool, and in particular, it can be twisted by half the number of times compared with the conventional method. The element can be obtained, and the plurality of warp threads are passed between the pair of attachment sections, so that the attachment section and the plurality of warp threads are integrally configured. The element can be easily attached to the frame.

[Brief description of drawings]

FIG. 1 is a schematic diagram for explaining a manufacturing method according to an embodiment of the present invention.

FIG. 2 is a schematic diagram for explaining the next step in FIG.

FIG. 3 is a schematic view illustrating the next step of FIG. 2 and showing an element according to an embodiment of the present invention.

FIG. 4 is a perspective view of a fixed floor constructed using the element of FIG.

FIG. 5 is a schematic diagram of a conventional water treatment facility in which the element of the present invention can be used.

[Explanation of Codes] 11 Warp 12 Weft 13 Woven 15 Mounting part 18 Wire

Claims (7)

[Claims] 1. A fixed floor frame is provided with a pair of attachment portions with a distance from each other, a plurality of warp yarns are arranged in parallel between the attachment portions, and a plurality of weft yarns of a predetermined length are provided on each warp yarn. By twisting the warp yarns that are woven and applied in the middle of the lengthwise direction of each warp yarn, the warp yarns are twisted in the lengthwise direction so that the plurality of weft yarns are arranged spirally around each warp yarn and A fixed bed element for water treatment, characterized in that it is provided with a fixture that radially projects from each warp and holds the twisted state given to each warp. 2. The fixing member is composed of a wire-like body, and the wire-like body is passed between a plurality of longitudinal intermediate portions of a plurality of warps, and the intermediate portions can be bound. The fixed bed element for water treatment according to claim 1, which is configured. 3. The attachment portion is configured such that a woven portion composed of both end portions of a warp and a weft at the end portions is sewn in a bag shape. Fixed-bed element for water treatment. 4. A rod-shaped mounting member for mounting to a frame of a fixed floor is passed through the inside of the bag-shaped mounting portion,
The fixed floor element for water treatment according to claim 3, wherein both ends of the mounting member project outwardly from the bag-shaped mounting portion. 5. A fixed bed for water treatment, wherein a plurality of fixed bed elements according to claim 1 are attached to a frame body of the fixed bed via respective attachment portions. 6. A blind-shaped woven fabric comprising a plurality of warp yarns and a large number of weft yarns is formed, and mounting portions to a frame body of a fixed bed are formed at both ends in the longitudinal direction of the warp yarns. A large number of cut weft yarns are obtained by cutting the weft portion in the space between the warp yarns in the longitudinal direction and applying a twist to the middle portion of each warp yarn in the longitudinal direction to twist the warp yarns in the longitudinal direction. A method for producing a fixed bed element for water treatment, comprising: arranging spirally around each warp, projecting radially from each warp, and holding a twisted state given to each warp by a fixture. 7. The production of a fixed floor element for water treatment according to claim 6, wherein the both ends of the cord-shaped fabric are sewn into a bag shape to form the attachment portion to the frame of the fixed floor. Method.