JP2551003Y2 - Disinfection tank overflow weir of sewage septic tank - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overflow weir for a disinfecting tank of a sewage purification tank and to an improvement of the overflow weir.

[0002]

2. Description of the Related Art Conventionally, as a small household combined use septic tank, as shown in FIG.
There is known a purification tank having a contact aeration tank B, a slot type sedimentation tank C, and a disinfection tank D in which an upper part E ′ of a partition E between the contact aeration tank B and the precipitation tank C is inclined toward the aerobic treatment tank B. Have been. This type of sewage purification tank sequentially purifies sewage by the action of anaerobic and aerobic microorganisms, and finally precipitates suspended matter in the sedimentation tank C, and only the supernatant is transferred to the disinfection tank D through the overflow weir F. The disinfecting tube G has a structure in which the disinfecting liquid is supplied from the disinfecting cylinder G and then discharged to the outside.

[0003] By the way, in a conventional sewage purification tank, a sedimentation tank C is used.
As shown in FIG. 6, an overflow weir F for transferring sewage to the disinfecting tank D has a U-shaped cross-section gutter F1 having a V-shaped notch V around the partition wall of the disinfecting tank D. Communication with the disinfecting tank D at the section F2, or as shown in FIG.
A straight gutter F1 is provided between the gutter F1 and the partition E;
V-shaped notches V are formed on the side wall of the partition wall, and the treated sewage overflows therefrom, and the sewage flows into the disinfection tank D from the communication portion F2 provided at the center.

[0004]

In the meantime, the flow of the treated water in the settling tank C generally tends to flow along the partition wall E or the inner wall of the septic tank, whereas the conventional overflow weir F opens toward the partition wall E or the inner wall of the septic tank. As a result, the flow of the treated water toward the overflow weir F becomes a deflected flow that rises along these partition walls E or the inner wall, so that the flow is likely to occur directly. Therefore, the separated sludge is not settled on the upward flow. There is a problem that the water may flow into the overflow weir F.

The overflow weir F needs to be completely horizontal in terms of its function, but it is difficult to mount the septic tank body horizontally, so that the overflow weir F is installed horizontally. There was also a problem that was very difficult to do. However, such a problem is that, for example, as disclosed in Japanese Utility Model Publication No. 57-53674, the overflow gutter F is mounted so as to be vertically or tilt-adjustable to enable horizontal adjustment regardless of the posture of the septic tank. However, no improvement has been made on the overflow state of the overflow weir F, and there has been a problem that the problem of the separation sludge flowing from the sedimentation tank to the disinfection tank is not sufficiently improved.

[0006]

SUMMARY OF THE INVENTION In view of the above problems, the present invention makes the flow of treated wastewater flowing from the sedimentation tank into the disinfection tank as horizontal as possible, thereby ensuring separation of the separated sludge. It is an object of the present invention to provide a disinfecting tank overflow weir of a sewage purifying tank that prevents advection to a disinfecting tank and can easily perform horizontal adjustment.

[0007]

That is, the overflow weir of the disinfection tank of the sewage purification tank according to the present invention comprises an anaerobic treatment tank, an aerobic treatment tank, a slot type sedimentation tank, and a disinfection tank. In a sewage purification tank such as a small combined clarification tank in which the upper part of the partition wall is inclined toward the aerobic treatment tank side, an overflow gutter for overflowing the treated sewage from the settling tank to the disinfection tank is provided between the partition wall and the disinfection tank. A large number of V notches are provided in parallel with the partition wall and allow the overflow of sewage to flow on the side of the disinfection tank of the overflow gutter, and the overflow gutter is communicated with the disinfection tank at the widthwise center of the purification tank. Characterized by the fact that

[0008] Another idea is to provide a horizontal adjustment function in the disinfecting tank overflow weir of the above-mentioned sewage purification tank, and in a sewage purification tank such as a small combined clarification tank, overflow of treated sewage from the sedimentation tank to the disinfection tank. A flow gutter is provided between the partition wall and the disinfection tank in parallel with the partition wall.
A large number of V notches are formed to overflow
The flow gutter is provided with a communication gutter to the disinfection tank, and the overflow gutter is rotatably supported on the disinfection tank outer wall at a bottom surface of the communication gutter via a pivot point, and the communication gutter is centered on the pivot point.
It is characterized in that it is mounted so as to be able to adjust the rotation around the axis of the gutter .

[0009]

Next, an embodiment of the present invention will be described. FIG. 1 is a side sectional view of a main part of an embodiment of the present invention, FIG. 2 is a plan view of a main part of the embodiment, and FIG. 3 is a cross-sectional view of a main part of the embodiment of the present invention.

[0010] Disinfection tank overflow weir 1 of the sewage purification tank of the present invention
Is equipped with an anaerobic filter tank (not shown), a contact aeration tank B, a slot type sedimentation tank C, and a disinfection tank D. The upper part of the partition E between the contact aeration tank B and the precipitation tank C is in contact with the aeration tank B. In a sewage treatment tank such as a small combined sewage tank inclined to the side, an overflow gutter 2 for flowing treated sewage W from a settling tank C to a disinfection tank D is provided between the partition E and the disinfection tank D in parallel with the partition E. A large number of V notches V for overflowing the sewage are formed on the side surface 3 of the disinfection tank of the overflow gutter 2 and the overflow gutter 2 has a cross section U to the disinfection tank D at a position such as the center M in the width direction of the purification tank. Gutter member 2
A is connected. In the figure, reference numeral 4 denotes a scum baffle.

FIG. 3 relates to an improvement of the above embodiment, in which the overflow gutter 2 is configured to be rotatable around the axis tt of a gutter member 2A having a U-shaped cross section. That is, the gutter member 2
A is provided with a recess 2B on the bottom surface, while a protrusion 5 is formed on the outer surface D 'of the disinfecting tank, and the overflow gutter 2 is supported by the recess 2B mounted and fitted on the protrusion 5. Is pivotable about the pivot point, and is fixed by bolts and nuts 5A and 5A that fit into curved long holes along the circumference around the pivot point. G in the figure indicates a disinfecting medicine cartridge. In the above embodiment, the pivot point is constituted by the projection 5 and the recessed portion 2B. However, as shown in FIG. 4, the pivot point is constituted by the bolt and nut 5B and penetrated through both to fasten. Is also good.

[0012]

The overflow weir of the present invention extends from the disinfecting tank D to the partition E side via the gutter member 2A, and V notches V for overflowing the sewage are provided on the disinfecting tank side. Since the inflow of the treated sewage W is carried out from the central part of the upper part of the settling tank C, even if an ascending flow is generated along the inner wall of the septic tank, a horizontal flow always occurs at the water surface. Is done. In addition, since the overflow weir 2 is rotatable about the pivot points 5 and 5A, even if the installation state of the septic tank is poor, the overflow gutter 2 can be easily leveled by adjusting the rotation about this part. can do.

[0013]

[Effects of the Invention] As described above, this invention uses the overflow of the overflow weir as the upper central part of the sedimentation tank. The sludge is settled at the time of horizontal flow before flowing into the sewage tank, and the transfer to the disinfection tank is effectively prevented. Also, since the overflow weir is supported by fitting with the projection, installation is easy and horizontal adjustment afterwards is easy, and various overflowing weirs can be maintained regardless of the installation state of the septic tank. Has an effect.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the embodiment.

FIG. 3 is a sectional view of a main part of the embodiment of the present invention.

FIG. 4 is a sectional view of a main part of another embodiment of the present invention.

FIG. 5 is a sectional view of a conventional example.

FIG. 6 is an explanatory perspective view of a conventional example.

FIG. 7 is an explanatory perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disinfection tank overflow weir 2 Overflow gutter 2A Gutter member 2B Recess 3 Disinfection tank side 4 Scum baffle 5 Projection 5A, 5B Bolt nut B Contact aeration tank C Slot type sedimentation tank D Disinfection tank E Partition wall V V notch W treatment sewage

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazuyuki Honda 2nd Takamatsu, Kosai-cho, Koga-gun, Shiga Prefecture Inside the Kubota Shiga Plant (72) Yoshito Kitai 2 Takamatsu, Kosai-cho, Koga-gun, Shiga (1) Inside the Kubota Shiga Plant (72) The inventor Hiroyoshi Nakajima Inside the Kubota Shiga Plant at 2 Takamatsu, Kosai-cho, Koga-gun, Shiga Prefecture (56) References Real Opening Sho 55-43545 (JP, U) Jiko 57-53674 (JP, Y2)

Claims (2)

(57) [Scope of request for utility model registration] 1. A small merger comprising an anaerobic treatment tank, an aerobic treatment tank, a slot type sedimentation tank and a disinfection tank, wherein the upper part of the partition wall between the aerobic treatment tank and the sedimentation tank is inclined toward the aerobic treatment tank. In a sewage purification tank such as a septic tank, an overflow gutter for overflowing treated sewage from a sedimentation tank to a disinfection tank is provided between the partition wall and the disinfection tank in parallel with the partition wall. A disinfection overflow weir for a sewage purification tank, wherein a number of V notches for overflowing the water are formed, and the overflow gutter is provided with a communication gutter to the disinfection tank. 2. A small merger comprising an anaerobic treatment tank, an aerobic treatment tank, a slot type sedimentation tank and a disinfection tank, wherein the upper part of the partition wall between the aerobic treatment tank and the sedimentation tank is inclined toward the aerobic treatment tank. in septic tank septic tank or the like, provided parallel to said partition wall between the overflow trough is the partition to flow overflow the more processing sewage into disinfecting bath sedimentation tank and disinfection tank, sewage disinfecting bath sides of該越flow trough To
A large number of V-notches to overflow are formed and
The gutter is provided with a communication gutter to the disinfection tank, and the overflow gutter is rotatably supported on a bottom surface of the communication gutter on the outer wall of the disinfection tank via a pivot point, and the communication gutter is centered on the pivot point. A disinfecting tank overflow weir of a sewage purification tank characterized by being mounted to be rotatable around the shaft.