JPS586557Y2 - wastewater treatment equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wastewater treatment device suitable for treating sewage, industrial wastewater, etc.

Conventionally, a rotating body constructed by installing a large number of substantially circular plates formed by radially arranging substantially fan-shaped plates around a rotating shaft is used in a wastewater treatment tank. The rotating body was immersed in wastewater to about half its diameter and rotated, and the wastewater was treated by the action of aerobic microorganisms that adhered to the rotating body in a layer and multiplied. There is a wastewater treatment facility.

As the substantially fan-shaped plate forming the rotating body in such wastewater treatment equipment, a lightweight thick plate such as foamed polystyrene, or a thin plate such as hard vinyl chloride resin has been used.

However, since a large number of substantially fan-shaped plates are stacked one on top of the other and installed around the rotation axis, it is time-consuming.

In addition, the approximately fan-shaped plate that constitutes the rotating body receives strong water pressure on the plate surface when the device is operated, and the plate surfaces may come together and contact each other, or the plate surfaces may open, causing friction and vibration between the plate surfaces. There was a risk that the microbial layer that had formed and adhered to the board surface would peel off.

In addition, although the approximately fan-shaped plate made of expanded polystyrene resin has a thick wall, the surface area is relatively small because it does not have very noticeable unevenness, so it has the disadvantage that the amount of microorganisms propagating per unit surface area is small. A generally fan-shaped plate made of vinyl chloride resin has a relatively thin wall, so it has low mechanical strength and has the disadvantage of being easily bent or bent under water pressure.

The wastewater treatment device of the present invention was developed with the aim of eliminating the above drawbacks, and its gist is that the substantially sector-shaped plates are arranged between the inner fan-arc portions of the substantially sector-shaped plates that face each other. Two pieces are integrally formed by end plates formed between the respective edges between the outer fan-shaped arc parts, and the plate surface near the both side edges of each substantially fan-shaped plate has vertical plates along the edges. A rib is protruded, and between the vertical ribs near both side edges, a large number of wavy ribs that are higher than the vertical rib are protruded in the arcuate direction, and the two ribs are integrally formed. The present invention resides in a wastewater treatment device in which fan-shaped plates are stacked one on top of the other and arranged radially around a rotating shaft.

Next, an example of the wastewater treatment apparatus of the present invention will be explained in more detail with reference to the drawings.

Reference numeral 1 denotes a substantially fan-shaped plate body constituting the rotating body 2, which is molded from synthetic resin such as polyester resin, polypropylene resin, vinyl chloride resin, or the like.

The substantially fan-shaped plates 1 are formed integrally with end plates 3 provided between the respective edges between the inner fan-shaped arc portions 4 and the outer fan-shaped arc portions 5 of two opposing substantially fan-shaped plates. The end plate 3 is provided with a through hole 6.

Openings 8 are formed between the opposite side edges 7, 7 of the substantially fan-shaped plate 1 except for the portions near the inner fan arc portion 4 and the outer fan arc portion 5.

Since two substantially fan-shaped plates 1 are integrally formed by end plates 3 formed between opposing edges, two substantially fan-shaped plates 1 can be handled as a set. Also, when forming a stacked body, the work is easier and requires less work than when stacking sheets one by one.

Furthermore, due to the end plates 3 formed between the substantially sector-shaped plates 1, the spacing between the substantially sector-shaped plates 1 is maintained constant even when the device is in operation, so that the substantially sector-shaped plates 1 may come into close contact with each other due to water pressure or open too much. This prevents the microorganism layer attached to the surface of the substantially fan-shaped plate 1 from peeling off.

Moreover, the end plate 3 enhances the agitation effect of the sewage and makes it easier to keep the sewage between the two generally fan-shaped plates 1 that are integrated.

The two through holes 6 of the end plate 3 are integrated so that even if the microorganism layer that has grown between the approximately fan-shaped plates 1 falls off, the holes 6 can still exit through the through holes 6, so that even if the microorganism layer that has grown between the approximately fan-shaped plates 1 falls off, the holes 6 can be removed. This prevents the inside from becoming anaerobic.

The openings 8 allow good flow of waste water between the two generally fan-shaped plate bodies 1 formed integrally.

Vertical ribs 9 are provided protruding along the edges on the plate surface near both side edges 7, 7 of each approximately fan-shaped plate body 1, and the side edges 7,
Between the vertical ribs 9 near 7, a large number of wavy ribs 10, which are higher than the vertical ribs 9, protrude in the sector direction.

The vertical ribs 9 increase the mechanical strength of the side edges of the substantially fan-shaped plate body 1,
The substantially fan-shaped plate body 1 is prevented from being bent between the side edges 7, 7.

The corrugated ribs 10 between the longitudinal ribs 9 near the side edges 7, 7 increase the mechanical strength of the plate surface of the substantially fan-shaped plate body 1.

In addition, since a large number of corrugated ribs 10 are protruded, the surface area of the substantially fan-shaped plate 1 increases, and the amount of microorganisms propagated increases.Since the corrugated ribs 10 are protruded in a fan-arc direction, even when the device is in operation, sewage does not flow rapidly from the plate surface. It easily stays in the water without running down, increasing the effect of contact between wastewater and air.

In addition, since the corrugated ribs 10 are higher than the vertical ribs 9, the vertical ribs 9 cover both side edges 7, 7 when the device is in operation.
This prevents violent turbulence from occurring in the vicinity, and prevents the microbial layer attached to the surface of the corrugated ribs 10 from peeling off due to the turbulence.

The wave-shaped knob 10 is provided on the plate surface between the vertical ribs 9 of the substantially sector-shaped plate body 1.
At the same time, recessed portions 11 and protruding portions 12 are formed at a plurality of locations.

In each of the substantially sector-shaped plates 1, the recessed portions 11 are formed at opposing locations of the substantially sector-shaped plates 1 that face each other,
The bottom wall surfaces of the recessed portions 11 are abutted against the bottom wall surfaces of the recessed portions 11 of the substantially fan-shaped plates 1 facing each other, and these abutted bottom wall surfaces of the recessed portions 11 are integrated.

Most of the protrusions 12 are formed adjacent to the recesses.

The depths of the recesses 11 are approximately the same in each of the plurality of recesses 11, and the heights of the protrusions 12 are also approximately the same.

The depth of the recessed part 11 and the height of the protruding part 12 are the same as the corrugated rib 1.
Since the height is greater than 0, it is possible to prevent the plate surfaces of the substantially fan-shaped plates 1 from coming into contact with each other.

Reference numeral 13 denotes insertion holes formed at a plurality of locations in the substantially fan-shaped plate 1;
A large number of shafts 14 are inserted into the shafts 3 and stacked one on top of the other.

The stacked bodies thus formed are arranged radially around the rotating shaft 15 to form a substantially circular rotating body 2.

Reference numeral 16 denotes a presser rod fitting portion formed on the outer fan arc portion 5 of the generally fan-shaped plate body 1 which is integrally formed with two pieces; The rotating body 2 is then fixed.

The rotating shaft 15 has both ends supported by bearings, and is rotated at low speed by the operation of a prime mover installed outside the wastewater treatment tank 19.

In the wastewater treatment apparatus of the present invention, two approximately fan-shaped plates can be handled as a set, making it easy to form a stacked body and reducing the amount of work.

In addition, the end plates maintain a constant spacing between the substantially fan-shaped plates even when the device is in operation, preventing the plate surfaces from coming into close contact with each other or opening too much due to water pressure, and preventing the microbial layer from peeling off due to friction and vibration of the plate surfaces. can be prevented.

Furthermore, vertical ribs protruding from the plate surface near both side edges of the substantially fan-shaped plate body along the edges and corrugated ribs protruding between the vertical ribs near the both side edges make it possible to create a machine with a substantially fan-shaped plate body. It has excellent mechanical strength and can prevent bending or bending due to water pressure when the device is operated.Also, the increased surface area of the plate allows for increased growth of microorganisms, making wastewater treatment more effective. It will be done.

Furthermore, since the corrugated ribs are higher than the vertical ribs, the effect of turbulence caused by the vertical ribs on the surface of the corrugated ribs is low, and the microbial layer adhering to the surface layer of the corrugated ribs is less likely to fall off due to the turbulent flow. Prevented.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a substantially fan-shaped plate of the wastewater treatment device of the present invention, Fig. 2 is a plan view as seen from the outer fan arc portion of the same, and Fig. 3
The figure is a partially cutaway bottom view as seen from the inner fan arc part of the above, Figure 4 is a partially cutaway sectional view taken along line II' in Figure 1, and Figure 5 is a partially cutaway view of an example of a wastewater treatment device. FIG. 3 is a side view showing a partial cross section. Explanation of symbols 1...Approximately fan-shaped plate body, 2...
・Rotating body, 3...End plate, 4...Inner fan arc portion, 5...Outer fan arc portion, 6...Through hole, 7
...Side edge, 8...Opening, 10...
... Wave-shaped rib, 11 ... Recessed part, 12 ...
...Protrusion, 13...Insertion hole, 14...
...Axis, 15...Rotation axis, 16...
Presser bar fitting part, 18... Presser bar.

Claims (1)

[Scope of claim for utility model registration] 1. The two substantially fan-shaped plates are integrally formed with end plates formed between the inner fan arc portions and the outer fan arc portions of the opposing substantially fan arc portions, respectively. Vertical ribs are protruded along the edges on the plate surface near both side edges of the fan-shaped plate body, and between the vertical ribs near the both side edges are wavy ribs that are higher than the vertical ribs in the fan arc direction. There are many protruding parts, and the above-mentioned 2
A wastewater treatment device in which approximately fan-shaped plate bodies formed in one piece are stacked on top of each other and arranged radially around a rotation axis. 2. The wastewater treatment device according to claim 1, wherein the end plate is provided with a through hole. 3. The wastewater treatment apparatus according to claim 1 or 2, wherein recesses and protrusions are formed at a plurality of locations on the plate surface between the vertical ribs of the substantially fan-shaped plate. 4. The wastewater according to any one of claims 1 to 3 of the claims registered as a utility model, wherein the presser rod fitting part is formed in the outer fan arc part of two substantially fan-shaped plate bodies formed integrally with each other. Processing equipment.