JPH09262407A - Sewage treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewage treating device extremely effective and occupy a small space. SOLUTION: To the end of a place to which sewage water flows, a sewage water outflow pipe 10 for causing the sewage water to flow out upward is connected. Surrounding the outflow pipe 10, a treating tank 8 is provided, in which a control means for making slow the velocity of the sewage water from the outflow pipe 10 to cause it to flow down is arranged. In this device, plural treating tanks 8 are arranged, with which the flows branching off from one sewage water flow communicate. In the treating tank 8, above the sewage water outflow pipe 10, buffer members on which the sewage water flowing out hits are arranged opposite to it. Moreover, to the end of a place to which sewage water flows, a sewage water outflow pipe 10 for causing the sewage water to flow out downward is provided. Surrounding the outflow pipe 10, a treating tank 8 is provided, in which a control means for making slow the velocity of the sewage water from the outflow pipe 10 to cause it to flow down is arranged. In this device, the control means is provided with buffer means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment apparatus which can be constructed, for example, in an existing settling basin or the like and can efficiently collect and remove sludge in a narrow space.

[0002]

2. Description of the Related Art For example, sewage that first flows into a settling basin is made to slowly flow through a large number of holes in a rectifying plate to naturally precipitate only sludge from the sewage.

[0003]

In such a method, since it is known that a large sedimentation basin is required for natural sedimentation, and further, a method of circulating a chain or a method of advancing and retracting a carrier with a scraper on a guide rail is used. The sludge attracting device is also inconvenient because it requires a large-scale device and the equipment cost increases. The present invention has been made to solve the above problems, and an object of the present invention is to settle and remove sludge from wastewater in an extremely efficient and space-saving manner.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 is to connect a sewage outflow pipe, which discharges sewage upward, to the end of the point where the sewage flows, and to connect the outflow pipe. A processing tank is provided on the outer periphery of the control tank, and a control means for slowing down the flow rate of the sewage from the outflow pipe and flowing it down is disposed in the processing tank.

According to a second aspect of the present invention, in the first aspect, a plurality of processing tanks are arranged, and one of these processing tanks is provided.
It branches from the sewage flow of books and communicates.

[0006] The invention described in claim 3 is claim 1 or 2.
In the above, a buffer member against which the sewage that flows out collides is disposed above the sewage outflow pipe.

According to a fourth aspect of the invention, a sewage outflow pipe for discharging sewage downward is connected to the end of the point where the sewage flows, and a treatment tank is provided on the outer periphery of the outflow pipe. Control means for slowing down the flow rate of the sewage from the outflow pipe is provided therein.

According to a fifth aspect of the present invention, in the fourth aspect, the control means includes a cushioning member.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. The embodiment shown in FIGS. 1 and 2 is a sewage treatment apparatus configured for a conventional rectangular settling tank 1. The settling basin 1 is provided with a rectifying plate on one side for inflowing sewage, but here, it is formed as a blind wall 2 through which a sewage outflow pipe 10 is provided. The blind wall 2 is formed after the fact, and may be formed by additionally providing a plate at the position of the straightening plate.

Reference numeral 5 denotes a pit, which is provided at an extension of the bottom wall 6 as before. Reference numeral 7 denotes a scraper, which is configured through a part of a sludge scraping device (not shown). Even if the scraping device is a flight chain type, it is a carrier.
It may be driven back and forth. Note that the scraper may not be configured in the embodiment of the present invention in some cases, for example, when the sludge settling action is complete.

In the space above the pit 5 of the sedimentation basin 1,
The processing tank 8 is installed vertically. The upper end of the treatment tank 8 is closed so that the upper end of the waste water outflow pipe 10 faces the upper wall 9.

The sewage outflow pipe 10 is a sewage induction pipe 11
The pipe 10 is bent in an elbow shape, and the pipe 10 has its flow passage narrowed from the middle so that the sewage hits the upper wall 9 as a jet. If a cushioning member such as a sponge is attached to the surface of the upper wall portion 9, the force of the jet flow is greatly reduced. Further, a cushioning member may be arranged at the place where the jet flow falls.

A large number of control plates 12 are arranged in the processing tank 8 in a staggered arrangement. As a result, the flow of the sewage becomes slower and flows down, and the sewage is effectively precipitated from the sewage. The clean water in which sludge has settled from the wastewater flows out in the outer peripheral direction of the treatment tank 8, but since the facing plate 13 is disposed there, the sludge also deposits there. Only clean water is discharged from the holes 14 at the upper end of the facing plate 13. The facing plate 13 may be further arranged one by one like a virtual line or may be arranged two or three. The sludge that has settled is taken out of the pond through the pump 15.

FIG. 2 shows an embodiment in which the sewage outflow pipe 10 is of a branch type and a plurality of treatment tanks 8 (a large number may be arranged) are provided so that precipitation treatment can be performed in each of them. In the embodiment of FIG. 2, the processing tanks 8 are independent, but each processing tank 8 can be formed by partitioning the inside of one or two large tank bodies. In this case, the processing tank 8 may have a rectangular tube shape (may be a hexagonal shape or the like). Furthermore,
In the embodiment of FIG. 1, the processing tank 8 is flat and is installed on the first floor, but it may be arranged on a plurality of floors vertically. On the other hand, in the case of the installation system on the first floor, the processing tank 8 which is vertically long can be used. For example, in FIG. 1, the processing tank 8 can be lengthened until the lower end opening is located slightly above the pit 5.

The embodiment shown in FIG. 3 relates to a device for more effectively decelerating the flow of sewage, and a buffer member 17 made of sponge, rubber, soft plastic, or the like is provided in a portion of the treatment tank 8 facing the sewage outflow pipe 10. With the
The buffer member 17 has a corrugated whole or lower surface to more effectively slow down the flow of wastewater. The same tank may be installed in a circular sedimentation tank.

In this case, the outlet of the sewage outflow pipe 10 is formed in a tapered shape so that the sewage is discharged at a reduced speed. Inside the treatment tank 8, control plates 12 are arranged in stages, and the control plates 12 and the sewage outflow pipe 10 are arranged.
A control string 18 for further decelerating the flow path between
Are hung.

The embodiment shown in FIG. 4 is a wastewater outflow pipe 1.
The outlet of 0 is directed downward, the processing tank 8 is formed in a substantially wedge shape, and a partition plate 20 is vertically installed on the upper side of the inside thereof and the lower portion thereof is formed to communicate with each other. The first tank portion 21 and the second tank portion 22 are provided. Is formed, and a buffer member 23 for greatly decelerating sewage is arranged with a float 24 at the upper opening of the first tank portion 21, and the first tank portion 21 and the second tank portion 22 are communicated with each other. An opposing plate 26 is arranged in the flow path 25 so that sludge flows downward and sewage flows upward.

The sewage gently hits the further opposed plate 27 so that sludge flows downward and sewage flows upward. With these structures, clean water is discharged from the upper outlet of the treatment tank 8, while sludge is discharged from the lower opening of the treatment tank 8. A counter plate 28 is further provided at the upper outlet of the treatment tank 8 so as to separate the clear water and the sludge. The embodiment of FIGS. 3 and 4 is
One or more units are installed in the settling basin shown in FIG. The same tank may be installed in a circular sedimentation tank.

The embodiment shown in FIG. 5 is also provided with one or more units in the settling basin shown in FIG. 1, and the treatment tank 8 is installed with the upper end near the water surface and the lower portion below the water surface. A sewage outflow pipe 10 is inserted into the tank 8 from above, and the lower end of the pipe 10 opens in a trumpet shape.
A ball-shaped control body 30 for diffusing sewage is provided in the opening, and a mesh member 31 and a buffer member 3 are provided below the opening.
Two are arranged one above the other.

The sewage flowing from the buffer member 32 in the outer diameter direction hits another buffer member 33 arranged on the inner circumference of the processing tank 8. This causes sludge to settle down and the water to rise. The sludge component is hard to flow upward in the partition plate 34, and only water flows upward. Processing tank 8
Since the counter plate 36 is provided in front of the upper outlet 35, water and sludge are further separated here. Sludge is also separated and settled by the counter plate 37 from the water exiting the outlet 35. still,
The clear water may be extracted from the upper end extraction hole 38 of the processing tank 8.

In the embodiment shown in FIG. 6, the treatment tank 8 is arranged considerably above the water surface of the settling basin, and a plurality of throttle pipes 40 ... Are inserted at the upper end of the sewage outflow pipe 10 to increase the outflow speed. The net-like member 41 and the cushioning member 42 are arranged to face each other at the outlet thereof. 43 is a control board and 44 is a control string. The lower outlet 45 of the treatment tank 8 is located above or below the water surface, and sludge is settled in the settling tank very slowly. The processing tank 8 shown in FIG. 4 or 5 may be provided below the processing tank 8, or a buffer member or a control plate may be provided without the processing tank 8. The sewage outflow pipe 10 is provided with a pump 46. Clear water is extracted from the upper end of the processing tank 8.

The embodiment shown in FIGS. 7 and 8 relates to a cushioning member, and the cushioning member 50 shown in FIG. 7 is elastically supported by a guide rod 51 and a spring 52. in this case,
The cushioning member 50 may be made of a soft material such as sponge or rubber in addition to a hard material. The cushioning member 50 shown in FIG.
It is suspended by a suspension spring 54. Buffer member 5 in this case
As for 0, a soft material such as sponge or rubber may be used instead of a hard material.

[0023]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, sedimentation and removal of sludge from wastewater becomes extremely efficient and space-saving.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a sewage treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a schematic vertical sectional view showing another sewage treatment apparatus.

FIG. 4 is a schematic vertical sectional view showing another sewage treatment apparatus.

FIG. 5 is a schematic vertical sectional view showing another sewage treatment apparatus.

FIG. 6 is a schematic vertical sectional view showing another sewage treatment apparatus.

FIG. 7 is a cross-sectional view showing another configuration example of the cushioning member.

FIG. 8 is a cross-sectional view showing another configuration example of the cushioning member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sedimentation tank 5 ... Pit 8 ... Treatment tank 10 ... Sewage outflow pipe 17,23,3,33,42,50 ... Buffer member.

Claims (5)

[Claims] 1. A sewage outflow pipe for outflowing sewage upward is connected to an end of a portion where sewage flows, and a treatment tank is provided on an outer periphery of the outflow pipe, and the outflow is provided in the treatment tank. A sewage treatment device provided with a control means for slowing down the speed of sewage from a pipe and causing it to flow down. 2. The sewage treatment apparatus according to claim 1, wherein a plurality of treatment tubs are arranged, and these sewage tubs branch and communicate with one sewage flow. 3. The sewage treatment apparatus according to claim 1, wherein a buffer member against which the sewage that flows out collides is disposed above the sewage outflow pipe. 4. A sewage outflow pipe for discharging sewage downward is connected to an end of a portion where sewage flows, and a treatment tank is provided on an outer periphery of the outflow pipe, and the outflow is provided in the treatment tank. A sewage treatment device provided with a control means for slowing down the speed of sewage from a pipe and causing it to flow down. 5. The sewage treatment apparatus according to claim 4, wherein the control means includes a buffer member.