JPH10272483A - Sewage cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewage cleaning device to remarkably improve treatment efficiency by increasing a turbulent flow caused by the contact of the sewage with a contact material. SOLUTION: In a sewage purifying device constituted so as to provide an aeration means 6 jetting bubbles 13 in a treating tank 1 and to attach contact materials 10a, 10b, which is formed by mounting many projections 12 on the surface of a string like core material 11 having flexibility, spirally winds the core material 11 to stick and breed microorganisms on the surface and is mounted to a supporting frame provided in the treating tank 1, the adjacent contact materials 10a, 10b are arranged alternately to form reversely the winding direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a structure for attaching a spirally wound contact material provided in a sewage purification apparatus for purifying sewage using microorganisms.

[0002]

2. Description of the Related Art In general, there are various types of sewage purifying apparatuses. One of the methods is a method of decomposing organic substances in sewage by growing microorganisms in a tank. In this method, a contact material that becomes a dwelling place for microorganisms is formed in a string shape and arranged in a treatment tank. In order to efficiently process the contact material by increasing its surface area, a spiral is formed by providing a large number of protrusions on the surface. As shown in FIG.
An inlet 3 for the waste water 2 is provided in the upper part of the treatment tank 1, and a drain port 4 for discharging purified water is provided in the upper part of the treatment tank 1 opposed thereto. At the bottom of the treatment tank 1, there is provided aeration means 6 such as a blower for ejecting bubbles 13 from the aeration port 5 into the wastewater 2.

[0003] A support frame 9 is provided in the processing tank 1 in which a plurality of vertical bars 7 and horizontal bars 8 are combined, and a plurality of contact bars are provided at intervals between the upper and lower horizontal bars 8. Lumber 10
... are connected. As shown in FIG. 4, the contact material 10 has a structure in which a large number of protrusions 12 are attached to the surface of a cord-like core material 11, and the protrusions 12 are spirally wound to adhere and propagate microorganisms on the surface.

The core material 11 of the contact material 10 is formed of a metal wire or the like whose surface is coated with a synthetic resin.
The end portions 11 were wound and joined, formed into a spiral shape wound, for example, leftward, and attached at intervals between the upper and lower horizontal bars 8. When the sewage 2 flows in from the inflow port 3, the sewage purification device has a contact member attached to the support frame 9.
.., And comes in contact with the microorganisms attached to the projections 12 on the surface of the contact material 10, whereby the organic matter contained in the wastewater 2 is decomposed and purified. However, when the sewage 2 descends between the contact materials 10.
Since the winding directions of the spirals are the same, there is a problem that the turbulence generated by the collision with the contact material 10 is small and the turbulence passes relatively quickly, thereby lowering the processing efficiency.

[0005]

SUMMARY OF THE INVENTION The present invention eliminates the above drawbacks and increases turbulence caused by contact between wastewater and a contact material.
An object of the present invention is to provide a sewage purification apparatus having greatly improved treatment efficiency.

[0006]

According to a first aspect of the present invention, there is provided a sewage purifying apparatus provided with aeration means for blowing air bubbles into a treatment tank, and a large number of flexible string-like core members are provided on the surface of a flexible cord-like core material. In a sewage purification device in which a contact material that attaches a projection and spirally winds it to adhere and propagate microorganisms on its surface is attached to a support frame provided in a treatment tank, the spiral winding direction of the adjacent contact material Are formed in the opposite direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. In the configuration of the sewage purification apparatus, an inflow port 3 for sewage 2 is provided at an upper portion of the treatment tank 1, and a drainage port 4 from which purified water is discharged is provided at an upper portion of the treatment tank 1 opposed thereto. Is provided with a partition plate. Aeration means 6 such as a blower which blows out bubbles 13 from aeration port 5 into sewage 2 is provided at the bottom of treatment tank 1.
Is provided.

In the processing tank 1, there is provided a support frame 9 in which a plurality of vertical bars 7 and horizontal bars 8 are combined in a rectangular parallelepiped shape. The contact members 10a and 10b, which are wound left and right, are arranged in a direction opposite to those adjacent to each other. The protrusions 12 of the contact members 10a and 10b are not limited to rings, but may be hook-like or needle-like.
Those having corrosion resistance such as carbon fiber are desirable.

When the sewage 2 flows in from the inlet 3, the sewage purifier of this structure has a contact member 10 attached to the support frame 9.
… Descends, and at this time, the protrusions 12 on the surface of the contact material 10
The sewage 2 is purified by contacting microorganisms attached to the sewage. In this case, the air bubbles 13 are moved from the aeration port 5 by the aeration means 6 to the treatment tank 1.
The sewage 2 comes into contact with the contact materials 10a and 10b while convection up and down in the treatment tank 1 as shown by arrows. At this time, the adjacent contact materials 10a and 10b are arranged alternately with the direction of the spiral being opposite to the left direction and the right direction, so that a large turbulence is generated at various places and the passing speed of the sewage 2 is reduced, The organic matter in the sewage 2 sufficiently contacts the microorganisms attached to the protrusions 12 and the organic matter in the sewage 2 is decomposed over time while being supplied with air by aeration. The purified water passes through the space between the inner wall of the treatment tank 1 and the partition plate 14 and the drain 4
Is discharged from

In the above description, the case where the contact members 10a, 10b are vertically mounted between the upper and lower horizontal bars 8, 8 of the support frame 9 has been described. An attached structure may be used. Further, the structure of the processing tank 1 includes a partition plate 14.
It may be a structure having no opening, or a structure in which the upper and lower openings are immersed in water such as a pond, and the bottom opening is an inlet and the upper opening is a drain.

[0011]

As described above, according to the sewage purifying apparatus according to the present invention, the contact members attached to the support frame are formed in a direction opposite to the spiral direction of the adjacent contact members and are alternately arranged. , Large turbulence is generated and the passing speed is slowed down,
The organic matter in the sewage was sufficiently decomposed by contacting the microorganisms adhering to the contact material, and was decomposed, thereby improving the treatment efficiency by 20 to 30% as compared with the conventional case.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sewage purification device according to an embodiment of the present invention.

FIG. 2 is a plan view of a support frame to which the contact member shown in FIG. 1 is attached.

FIG. 3 is a sectional view showing a conventional sewage purification device.

FIG. 4 is an enlarged front view showing a state where a contact member is attached to the horizontal bar of FIG. 3;

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Treatment tank 2 Waste water 3 Inflow port 4 Drain port 5 Aeration port 6 Aeration means 7 Vertical bar 8 Horizontal bar 9 Support frame 10a Contact material 10b Contact material 11 Core material 12 Projection 13 Bubbles 13

Claims (1)

[Claims] An aeration means for ejecting air bubbles into a treatment tank is provided. A large number of projections are attached to the surface of a flexible cord-like core material, which is spirally wound to remove microorganisms on the surface. In a sewage purification device in which a contact material to be attached and propagated is attached to a support frame provided in a treatment tank, a spiral direction of a spiral of the adjacent contact material is formed in a reverse direction.