JP3366561B2 - Water collecting device for septic tank - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a precipitation treatment tank for solid-liquid precipitation separation of water to be treated, and a manhole is provided above the precipitation treatment tank. The present invention relates to a septic tank water collecting device for collecting and supplying supernatant water of a precipitation treatment tank to the treated water transfer device in a septic tank provided with a treated water transfer device for guiding to the outside of the precipitation treatment tank.

[0002]

2. Description of the Related Art Conventionally, as a water collecting device for a septic tank of this type, a U-shaped pipe is erected in the sedimentation treatment tank, and a treated water transfer device is provided on the discharge side end of the U-shaped pipe. Provided,
The treated water is formed so that it can be led out of the precipitation treatment tank, and the treated water advancing hole is opened at the end of the water collection side so that the supernatant water of the precipitation treatment tank can be advected, and the U-shaped tube is collected. It is known that the water side end is simply opened in the precipitation treatment tank.

[0003]

The water to be treated flowing in from the water collecting side end of the U-shaped tube is in a state in which thread-like solid matter is suspended, although it is precipitated and separated. Sometimes. According to the above-described conventional septic tank water collecting device, there is a disadvantage that the solid matter flows into the water collecting side end portion and gradually accumulates, and the treated water advancing hole at the water collecting side end portion is closed. There was a risk of it occurring. Therefore, a user of a septic tank equipped with such a septic tank water collecting device is required to regularly inspect, but such an inspection work is a work in a closed place in the septic tank. , Difficult,
There was a situation that the workability had to be low.

Therefore, in view of the above situation, it is an object of the present invention to provide a septic tank water collecting device which is easy to maintain against inconveniences such as clogging of a treated water advancing hole.

[0005]

To achieve this object, the characteristic structure of the water collecting device for a septic tank of the present invention is to provide a sedimentation treatment tank for solid-liquid sedimentation separation of water to be treated, and above the sedimentation treatment tank. In a septic tank provided with a manhole on the side and provided with a treated water transfer device for guiding the treated water of the precipitation treatment tank to the outside of the precipitation treatment tank, the supernatant water of the precipitation treatment tank is transferred to the treated water transfer device. A water collecting device for a septic tank, which collects and supplies the treated water, wherein a U-shaped pipe is erected in the settling tank and the treated water is provided on one end side of the U-shaped pipe to constitute the treated water transfer device. Forming an end for discharging water that can be led out of the precipitation treatment tank, and forming a water collecting portion on the other end side capable of advancing the supernatant water of the precipitation processing tank, and collecting water in the U-shaped tube In addition to detachably attaching a water collecting pipe with a treated water introduction hole to the section, The water collecting pipe is attached to the water collecting part of the U-shaped pipe through the manhole, and the operation part is provided to the water collecting part. The water collecting part is formed in a trumpet shape and opens upward. It is preferable that the water collection pipe,
The inverted U-shaped water collecting pipe main body is provided with a connecting portion for the water collecting portion on one end side thereof, and a water collecting arm having a large number of treated water introducing holes provided on the other end side thereof is extended in a horizontal posture to extend the water collecting arm. It is further preferable that the end of the water arm is attached to the water collection pipe body so as to be vertically swingable. The water collection pipe body is provided with a pipe-like handle to form the operation part, and the handle is It is preferable to form a gas vent in the water collection pipe body.

[Operation and Effect] That is, since the treated water transfer device is formed from a U-shaped pipe, the treated water is introduced into the sedimentation treatment tank as the treated water is discharged from the discharge end. The water to be treated may enter the U-shaped tube through the hole. That is, when the water collecting pipe is in a position where it is submerged, the water collecting pipe communicates with the water collecting portion, so that when the water level becomes sufficiently high, the treated water is collected from the treated water introducing hole through the water collecting pipe. To reach the water collection section through
The water enters the U-shaped pipe from the water collecting portion, reaches the discharge end, and is discharged to the outside.

At this time, when floating sludge or the like is mixed in the treated water, the floating sludge passes through the treated water introducing hole, and therefore may be caught in the treated water introducing hole. That is, if such a situation continues, there is a risk that the treated water introduction hole will be blocked and sufficient treated water transfer cannot be ensured. In such a case, it is necessary to regularly check whether the treated water introduction hole is functioning normally, but the water collecting pipe is detached from the water collecting unit by the operation unit. Since it can be operated, the water collection pipe can be removed upward through the manhole and can be inspected in a state where it is moved to the state of being exposed above the water surface. Further, if the water to be treated introduction hole is about to be blocked, it can be easily washed.

At this time, if the water collecting portion is opened upward in the shape of a trumpet, the water collecting portion can be used as a guide for attachment / detachment, so that the mounting workability is improved. Further, if the water collecting arm is provided with a large number of holes, water is collected from a wide range, the water flow does not become extremely fast in the vicinity of the water collecting pipe, and it is difficult to suck the suspended matter. Furthermore, if this arm is extended horizontally, only the supernatant can be collected efficiently. Further, by submerging the water surface to some extent, it is possible to prevent the scum on the water surface from being sucked. If the body of the water collection pipe is an inverted U-shape, it is possible that water will enter the water collection pipe until the position of the treated water introduction hole due to the siphon principle even at a position where the water level is lower than the desired LWL. If the gas vent is formed, the water level can be reversed U without such inconvenience.
The treated water can be held above the upper position of the character-shaped water collecting pipe, and the treated water can be smoothly transferred. In addition, if the degassing part is formed on the pipe-shaped handle, it is easy to form the degassing part so that it is covered from the surroundings, the degassing part is unlikely to become clogged, and the degassing and gripping can be done in a small space. Can be placed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a septic tank to which the present invention is applied. This septic tank is installed from the upstream side in the first chamber N of the anaerobic filter bed tank.
1 and an anaerobic filter bed second chamber N2, an anaerobic filter bed N, a contact aeration tank E, and a precipitation treatment tank P in this order. In addition, a disinfection tank for disinfecting the treated water is provided above the precipitation treatment tank. In the figure, M is a manhole provided above each layer.

The anaerobic filter bed first chamber N1 removes coarse suspended matter in the treated water flowing from the inflow port 2 and performs an anaerobic decomposition treatment in the same manner as the anaerobic filter bed second chamber N2. Therefore, the anaerobic filter bed first chamber N1 and the anaerobic filter bed second chamber N2
Is provided with first and second filter beds F1 and F2 in order to inhabit anaerobic microorganisms that anaerobically decompose organic matter in the treated water and to fix it as a biofilm. Here, the first filter bed F1 of the anaerobic filter bed tank first chamber N1 is formed of a honeycomb tube-shaped filter medium mesh having a coarse lattice spacing that is unlikely to be clogged, and the second filter bed F2 of the anaerobic filter bed tank second chamber N2 is used. Is denser than the first filter bed F1 of the anaerobic filter bed first chamber N1.

The contact aeration tank E is for oxidatively decomposing organic substances and ammonia nitrogen in the treated water, and is provided with a contact material C for fixing aerobic microorganisms for this purpose. Further, a circulating flow of the treated water is generated in the contact aeration tank E so that the treated water containing an organic substance is brought into good contact with the aerobic microorganisms fixed on the contact material C, and oxygen necessary for the aerobic microorganisms is generated. An air diffuser D for supplying air for giving is provided in the contact aeration tank E.

As shown in FIG. 2, the precipitation treatment tank P is
A U-shaped pipe U is erected in the precipitation treatment tank P and
A water collecting end that forms a discharge end U1 that can lead the treated water to the outside of the precipitation treatment tank P on one end side of the letter U and that can transfer the supernatant water of the precipitation treatment tank to the other end side Forming part U2,
A water collecting pipe A having a treated water introduction hole A1 is detachably attached to the water collecting portion of the U-shaped pipe U, and the water collecting pipe A is collected through the manhole M. The septic tank water collecting device of the present invention is provided with an operation unit H for attaching and detaching the water unit U2. The treated water transfer device supplies an air supply device B to the U-shaped pipe U and the treated water pumped by the air supply device B to the disinfection tank Q.
The transfer path U3 for transferring to is formed by an air lift pump continuously provided at one end. Thereby, the precipitation treatment tank P
Then, the supernatant liquid from which the suspended matter is separated by sedimentation is efficiently disinfected.
It can be transferred to.

As shown in FIGS. 3 and 4, one end portion of the U-shaped pipe U is formed in a trumpet shape and is opened upward, and at the one end side of the inverted U-shaped water collecting pipe main body A3. A water collecting arm A5 having a connecting portion A4 for the water collecting portion U2 and a large number of treated water circulation holes provided at the other end is extended in a horizontal posture. The water collecting arm A5 is the water collecting pipe body A3.
The water collecting arm A5 is swingably attached to the water collecting pipe main body A3. In addition, the water collecting pipe body A3 is provided with a pipe-shaped handle H1 to form the operating portion H, and a gas vent hole H2 is provided at a connecting portion of the water collecting pipe body A3 to the handle H1. To the water collecting pipe body A3
An inner gas vent portion H3 is formed (see FIG. 5).

With this structure, the water collecting apparatus for the septic tank can attach / detach the water collecting tube main body A3 to / from the U-shaped tube U only by manipulating the handle H1 from the manhole M. The handle H1 is pulled, the water collection pipe body A3 is removed, and the water collection arm A5 is connected to the water collection pipe body A3.
It can be rotated with respect to, folded compactly in a plan view, and pulled out from the manhole M, so that maintenance work can be performed outside the septic tank in an easy-to-work posture. On the contrary, after completion of maintenance, the water collection pipe body A3 may be attached to the U-shaped pipe U by following the reverse process (see FIG. 4).

A disinfection tank Q is provided above the sedimentation treatment tank P, and for the wastewater from the contact aeration tank E, the treated water from which suspended solids have been sedimented and removed is disinfected and discharged from the discharge port 4. Is done.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Vertical side view of the septic tank

[Figure 2] Front view of the septic tank in vertical section

FIG. 3 is a perspective view of a precipitation treatment tank

FIG. 4 is a perspective view for explaining the operation of the water collecting device for the septic tank.

FIG. 5 is a vertical cross-sectional side view of main parts of the water collecting device for the septic tank.

[Explanation of symbols]

P settling tank U U-shaped tube U1 Discharge end U2 water catchment section A1 Treated water introduction hole A water collection pipe M manhole H operation part

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-4-71688 (JP, A) JP-A-5-138184 (JP, A) JP-A-7-275877 (JP, A) JP-A-7- 47378 (JP, A) JP-A-9-85270 (JP, A) JP-A-5-329495 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 3/00

Claims (4)

(57) [Claims] 1. A precipitation treatment tank (P) for solid-liquid precipitation separation of water to be treated is provided, and a manhole (M) is provided above the precipitation treatment tank (P), and the precipitation treatment tank (P) is provided. In a septic tank provided with a treated water transfer device for guiding treated water to the outside of the precipitation treatment tank (P), a septic tank collecting and supplying supernatant water of the precipitation treatment tank (P) to the treated water transfer device A water collecting device for use in the sedimentation treatment tank (P), which constitutes the treated water transfer device.
A U-shaped pipe (U) is erected therein, and a discharge end (U1) is formed on one end side of the U-shaped pipe (U) so that the water to be treated can be led out of the precipitation treatment tank, And, the water collecting part (U) capable of advancing the supernatant water of the precipitation treatment tank (P) to the other end side.
2) is formed, and in the water collecting part (U2) of the U-shaped pipe (U),
A water collecting pipe (A) having a treated water introduction hole (A1) is removably attached, and the water collecting pipe (A) collects water from the U-shaped pipe (U) through the manhole (M). A septic tank water collecting device provided with an operating section (H) for attaching and detaching to and from the section (U2). 2. The water collecting device for a septic tank according to claim 1, wherein the water collecting portion (U2) is formed in a trumpet shape and opens upward. 3. The water collecting pipe (A) is provided with a connecting portion (A4) for the water collecting portion (U2) on one end side of an inverted U-shaped water collecting pipe main body (A3), and a receiving portion on the other end side. Treated water inlet (A
A water collecting arm (A5) provided with a large number of 1) is extended in a horizontal posture, and an end of the water collecting arm (A5) is attached to the water collecting pipe body (A3) so as to be vertically swingable. The water collection device for the septic tank according to claim 1. 4. The water collecting pipe main body (A3) is provided with a pipe-shaped handle (H1) to form the operating portion (H), and the grip (H1) is provided with a pipe (H1) inside the water collecting pipe main body (A3). The water collecting device for a septic tank according to any one of claims 1 to 3, wherein a degassing portion (H3) is formed.