JP2002239588A - Anaerobic tank treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anaerobic tank treatment apparatus capable of efficiently fixing supporting poles. SOLUTION: An anaerobic tank 10 is constituted by supporting a plurality of tray-shaped filter media 32, etc., on the vertically arranged support 30. The support 30 is fixed by fitting a lower receiving plug 36 in the lower end 30A of the support 30 to insert the same in the hole 26A of a lower frame 26 and inserting an upper receiving plug 38 in the hole 28A of an upper frame 28 from above and fitting the lower end thereof in the upper end 30B of the support 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anaerobic tank processing apparatus, and more particularly, to an anaerobic tank processing apparatus in which a support for supporting a filter medium in an anaerobic tank is fixed to an upper frame and a lower frame.

[0002]

2. Description of the Related Art In an anaerobic tank treatment apparatus using a fixed biofilm method, a filter medium made of plastic or the like is filled in an anaerobic tank, and the anaerobic bacteria are supported by the filter medium. For example, a large number of dish-shaped filter media (hereinafter, dish-shaped filter media) are provided horizontally inside the anaerobic tank. In the anaerobic tank provided with the dish-shaped filter medium, the water to be treated flows in an upward flow,
Thereby, the water to be treated is biologically treated.

[0003] By the way, a plurality of dish-shaped filter media are supported by columns arranged vertically. The upper end of the support is fixed to the upper frame in the anaerobic tank, and the lower end of the support is fixed to the lower frame in the anaerobic tank.

[0004]

However, conventionally, since the support was fixed to the upper frame and the lower frame by welding, the support could not be easily fixed, and a large amount of time was required for fixing the support. .

[0005] There is also a method of fixing the column to the upper frame and the lower frame by using a screw, a split pin, or the like. However, even in this case, the efficiency of fixing the column has not been significantly improved.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an anaerobic tank treatment apparatus capable of efficiently fixing a column.

[0007]

According to a first aspect of the present invention, there is provided an anaerobic tank which is installed vertically in an anaerobic tank to support a filter medium in the anaerobic tank and has an upper end portion provided in the anaerobic tank. In an anaerobic tank treatment device having a column supported by an upper frame inside and a lower end supported by a lower frame in the anaerobic tank, the column is fitted into a lower portion of the column to form the lower frame. First inserted into the drilled hole
It is characterized by being fixed to the upper frame and the lower frame by a fixing member and a second fixing member inserted from above into a hole formed in the upper frame and fitted into an upper end portion of the column. .

According to the first aspect of the present invention, the first fixing member is fitted into the lower end of the column and inserted into the hole of the lower frame, and the second fixing member is inserted into the hole of the upper frame and inserted into the upper end of the column. Since it is fitted, the support can be easily fixed. Therefore, there is no need for welding, and no screws or split pins are required, so that the work for fixing the support can be performed efficiently.

According to the second aspect of the present invention, since the predetermined gap is provided between the upper end portion of the support and the upper frame, the support is not damaged even if the support extends.

[0010] According to the third aspect of the present invention, since the struts are surrounded by a plurality of straightening plates, the water to be treated can be prevented from flowing unevenly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an anaerobic tank treatment apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 1, a supply pipe 12 is vertically supported at a central position of the anaerobic tank 10. Supply pipe 12
Is connected to an inflow channel (not shown), and water to be treated (not shown) is supplied from the inflow channel. Supply pipe 12
Is opened by a hopper 10A below the anaerobic tank 10, and a dispersion plate 14 is provided below the opening. Therefore, the water to be treated spouted downward from the lower end of the supply pipe 12 is turned by the dispersion plate 14 to form an upward flow. The water to be treated rising in the upward flow passes through the inside of the filter medium blocks 16, 16, and flows out to the gutter 18 provided at the upper part of the anaerobic tank 10. The gutter section 18 is an anaerobic tank 1
0 and is connected to the aerobic tank via a liquid feed pipe (not shown). Thereby, a part of the water to be treated in the anaerobic tank 10 is returned to the aerobic tank. Note that reference numeral 2 in FIG.
Numeral 0 denotes a wear plate in which triangular protrusions are formed continuously. The water to be treated flows to the gutter section 18 from the gap between the protruding portions of the wear plate 20. The sludge settled in the hopper 10A is drawn out from a drawing pipe (not shown) communicating with the lower end of the hopper 10A.

The filter medium block 16 is formed in a substantially cubic shape, and is stacked on the filter medium receiving base 22 in a plurality of stages.

FIG. 2 is a perspective view showing the structure of the filter medium block 16. As shown in FIG.

As shown in FIG.
The outer frame 24, the lower frames 26, 26,... And the upper frame 2 formed of stainless steel L-shaped steel
8, 28,... The outer frame 24 is formed in a substantially cubic shape, and a plurality of lower frames 26 are horizontally hung on the lower surface of the outer frame 24. The upper frames 28, 28,...
And it is arranged in parallel with the lower frame 26.

A number of columns 30, 30,... Are provided between the lower frame 26 and the upper frame 28. Each column 30 is formed in a cylindrical shape by plastic, and is arranged vertically. A plurality of dish-shaped filter media 32, 32,... Are horizontally mounted on each support 30.

The dish-shaped filter medium 32 is made of plastic or the like, and has a disc-shaped bottom 32A as shown in FIGS.
And an edge 32B obliquely provided on the outer periphery of the bottom 32A.
Are formed in a dish shape. Anaerobic bacteria in the water to be treated are supported by the dish-shaped filter medium 32.

Further, as shown in FIG. 2, the dish-shaped filter medium 32 is arranged so as to be shifted in the height direction from the dish-shaped filter medium 32 supported by the adjacent column 30, and viewed from the upper surface (or the lower surface). They are placed one on top of the other so that there is no gap between them. As a result, the water to be treated is prevented from rising linearly, and the water to be treated is effectively brought into contact with the dish-shaped filter medium 32 for biological treatment.

An anaerobic tank 10 is provided on the side of the outer frame 24.
A rectifying plate 34 for evenly dividing the inside of the device into four sections is attached. Thereby, the water to be treated is stored in the anaerobic tank 1
0 is prevented from flowing eccentrically.

Next, the structure for assembling the support 30 and the dish-shaped filter medium 32 will be described.

As shown in FIG. 3, a hole 28A is formed in the upper frame 28, and a hole 26A is formed in the lower frame 26. The support column 30 has a hole 26A of the lower frame 26.
Is attached via a lower stopper (corresponding to a first fixing member) 36 to the hole 28A of the upper frame 28 via an upper stopper (corresponding to the second fixing member) 38.

The lower receiving plug 36 is provided with the hole 26 of the lower frame 26.
A small diameter portion 36A having an outer diameter slightly smaller than A and a large diameter portion 36B having an outer diameter larger than the hole 26A.
A stepped portion 36C is formed between A and the large diameter portion 36B. Therefore, when the small diameter portion 36A of the lower stopper 36 is inserted into the hole 26A of the lower frame 26 from above, the stepped portion 36A
C contacts and engages the lower frame 26. Large diameter part 36
B is formed in a cylindrical shape so that the lower end portion 30A of the column 30 can be fitted therein. Therefore, the large-diameter portion 36B of the lower stopper 36 is fitted into the lower end 30A of the column 30, and the small-diameter portion 36A of the lower stopper 36 is attached to the lower frame 26.
The column 30 is inserted into the hole 26A of the
Is engaged with and supported by the lower frame 26.

The upper stopper 38 is connected to the hole 28 of the upper frame 28.
A is formed in a size that can be inserted into the
A flange 38A larger than A is formed. Therefore, when the upper stopper 38 is inserted into the hole 28A of the upper frame 28 from above, the flange 38A is brought into contact with and engaged with the upper frame 28. Tip 38B of upper stopper 38
Is formed in a size to be fitted into the upper end portion 30 </ b> B of the column 30. Therefore, by inserting the upper stopper 38 into the hole 28A of the upper frame 28 from above and fitting it into the upper end 30B of the support 30, the upper end 30B of the support 30 is supported by the upper frame 28.

The strut 30 is formed to have a length shorter than the distance between the lower frame 26 and the upper frame 28, and
When 0 is assembled between the lower frame 26 and the upper frame 28, a gap H is formed as shown in FIG.

On the other hand, the dish-shaped filter medium 32 is inserted into the column 30 and is held at a predetermined interval by a spacer 40 formed in a cylindrical shape. That is, the spacer 30 and the dish-shaped filter medium 32 are alternately inserted into the support 30, and the dish-shaped filter medium 3 is
2 is supported by this spacer 40.

The column 3 in which the uppermost dish-shaped filter medium 32 is inserted
At 0, a fixing ring 42 is fitted. Retaining ring 4
2 is provided with a notch 42A, as shown in FIG. 4, so that it can be fitted into the column 30. The fixing ring 42 is fitted into the support 30 after applying an adhesive to the surface of the support 30. As a result, the fixing ring 42 is fixed to the column 30, and each dish-shaped filter medium 32 is fixed in the axial direction of the column 30.

Next, a method of assembling the column 30 configured as described above will be described.

First, the lower stopper 36 is fitted into the lower end 30A of the column 30.

Next, spacers 40 and dish-shaped filter media 32 are alternately inserted from the upper end 30B of the support 30. This allows
The dish-shaped filter medium 32 is supported by the spacer 40 and is held at the length interval of the spacer 40.

After the uppermost dish-shaped filter medium 32 is inserted, an adhesive (not shown) is applied to a part of the surface of the column 30 and the fixing ring 42 is fitted into the column 30 as shown in FIG. As a result, the fixing ring 42 is adhered to the support 30, and the dish-shaped filter media 32 are fixed to the support 30.

Next, as shown in FIG. 5, the lower stopper 36 is inserted into the hole 26A of the lower frame 26 from above. As a result, the stepped portion 36C of the lower stopper 36 is engaged with the lower frame 26, and the column 30 is supported by the lower frame 26.

Next, as shown in FIG. 6, the upper stopper 38 is inserted into the hole 28A of the upper frame 28 from above, and the upper stopper 3 is inserted.
8 is fitted into the upper end 30 </ b> B of the column 30. Thereby, the support 30 is fixed to the upper frame 28 and the lower frame 26 as shown in FIG.

As described above, according to the present embodiment, the column 3 is formed by the plug-in type lower stopper 36 and upper stopper 38.
0 can be fixed to the lower frame 26 and the upper frame 28. Therefore, it is not necessary to perform welding or the like, and screws and split pins are not required, so that the column 30 can be fixed efficiently.

Further, according to the present embodiment, since the predetermined gap H is provided between the upper end portion 30B of the column 30 and the upper frame 28, the column 30 expands and contracts due to a change in the temperature of the water to be treated. Even if the support 30 is not damaged.

Since the rectifying plate 34 for uniformly dividing the inside of the anaerobic tank 10 into four sections is provided, it is possible to prevent the water to be treated from flowing unevenly inside the anaerobic tank 10.

Further, according to the above-described method of assembling the dish-shaped filter medium 32, the fixing ring 42 is simply fixed to the column 30, and the plurality of dish-shaped filter media 32, 32,.
Can be fixed. Therefore, the work of assembling the dish-shaped filter medium 32 can be performed efficiently.

[0037]

As described above, according to the anaerobic tank treatment apparatus of the present invention, the first fixing member is fitted into the lower end portion of the column and inserted into the hole of the lower frame, and the second fixing member is inserted into the hole of the upper frame. Since the support is fixed by inserting it into the hole and fitting it to the upper end of the support, the work of fixing the support can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of an anaerobic tank of an anaerobic tank processing apparatus according to the present invention.

FIG. 2 is a perspective view showing a filter medium block.

FIG. 3 is a side sectional view showing an assembling structure of a column and a dish-shaped filter medium.

FIG. 4 is a perspective view showing a dish-shaped filter medium.

FIG. 5 is a perspective view showing a method of assembling the lower stopper.

FIG. 6 is a perspective view showing a method of assembling the upper stopper.

[Explanation of symbols]

10 anaerobic tank, 12 supply pipe, 16 filter medium block, 2
6 lower frame, 26A hole, 28 upper frame, 28
A: hole, 30: column, 32: dish-shaped filter medium, 34: rectifying plate,
36: lower stopper, 38: upper stopper, 40: spacer, 4
2. Fixing ring

Claims (3)

[Claims] 1. An anaerobic tank which is installed vertically to support a filter medium in the anaerobic tank, has an upper end supported by an upper frame in the anaerobic tank, and a lower end supported by a lower frame in the anaerobic tank. In the anaerobic tank treatment device provided with a supported column, the column is fitted into a lower portion of the column, and a first fixing member inserted into a hole formed in the lower frame; and a column formed on the upper frame. An anaerobic tank treatment device fixed to the upper frame and the lower frame by a second fixing member inserted into the hole from above and fitted to the upper end of the column. 2. The anaerobic tank treatment apparatus according to claim 1, wherein a predetermined gap is formed between an upper end portion of the support and the upper frame. 3. The anaerobic tank treatment apparatus according to claim 1, wherein the support is surrounded by a straightening plate every plural columns.