JP3366562B2 - 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. With a manhole on the side, in the septic tank 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, to configure the treated water transfer device, the precipitation The standing end is provided in the treatment tank, and at the one end side of the U-shaped pipe, a discharge end portion capable of guiding the treated water to the outside of the precipitation treatment tank is formed, and the other end side of the discharge treatment tank is formed. While extending above the water level,
An opening capable of advancing the supernatant water is formed at a position lower than the water level, and a connection portion that is capable of communicating with the opening is provided, and
A water collecting pipe having a treated water introducing hole is vertically slidably provided on the other end side of the U-shaped pipe at a submerged water collecting position where the water communicating pipe is connected to the opening and a take-out position above the opening. A fixing portion is provided for fixing the water collecting pipe in a state of being connected and connected to the opening, and sliding the water collecting pipe from the submerged water collecting position to the take-out position with respect to the U-shaped pipe through the manhole. The point is that a sliding operation section that is operated dynamically is provided, and the supernatant water of the precipitation treatment tank can be collected and supplied to the treated water transfer device. Further, the water collecting pipe is formed by horizontally extending a water collecting arm having a large number of treated water introducing holes on the other end side of the water collecting pipe main body, and the end of the water collecting arm is It is preferable that the water collecting pipe body is attached so as to be vertically swingable.

[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 the submerged water collecting position, the water collecting pipe communicates with the opening, so that when the water level becomes sufficiently high, the treated water flows from the treated water introducing hole to the water collecting pipe. Through to the connection,
It penetrates into the U-shaped pipe through the opening, 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 moved from the submerged water collecting position by the sliding operation part. Since it can be slid to the take-out position, it can be inspected while the water collecting pipe is moved upward through the manhole. Further, when the treated water introduction hole is about to be blocked,
It can be easily washed.

In addition, after performing such maintenance, in order to arrange the water collecting pipe at the submerged water collecting position,
It suffices that the water collecting pipe is slid and moved to the fixed portion, and a posture in which the water to be treated is easily discharged can be formed by a simple operation.

If the treated water introducing hole is provided in the water collecting arm extending horizontally in the treated water, only the supernatant water in the precipitation treatment tank can be efficiently collected over a wide range. Even if the suspended matter exists in the precipitation treatment tank, it is easy to create a situation in which it is difficult to discharge the suspended matter. Further, since the water collecting arm can swing up and down at its end, the area occupied in plan view can be easily set to be small, and the water collecting arm can be made compact when performing maintenance via the manhole. Good workability when the water pipe is taken out of the manhole.

[0010]

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. A disinfection tank Q for disinfecting the treated water is provided above the precipitation treatment tank P. 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 process 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, ammoniacal nitrogen and the like 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.

In the precipitation treatment tank P, a U-shaped pipe U is erected in the precipitation treatment tank P and one end U of the U-shaped pipe U is provided.
On one side, a discharge end portion that allows the treated water to be led out of the precipitation treatment tank P is formed, and the other end U2 side is provided above the water level of the precipitation treatment tank P, and An opening K capable of advancing the clear water is formed below the water level,
A submerged water collecting position at which a water collecting pipe A having a connecting portion A1 that can communicate with the opening K and having a treated water introducing hole A2 is connected to the opening K, and A fixing portion J is attached to the upper take-out position so as to be vertically slidable on the other end U2 side of the U-shaped pipe U, and a fixing portion J for fixing the water collecting pipe A in a state of being connected to the opening K is provided. The septic tank water collecting device is provided with a sliding operation part H for sliding the water pipe A to the U-shaped pipe U through the manhole M from the submerged water collecting position to the take-out position. The treated water transfer device is formed by an air supply device for the U-shaped pipe and an air lift pump in which a transfer passage for transferring the treated water pumped up by the air supply device to the disinfection tank is continuously provided at an end on the discharge side. I am doing it. This allows
In the precipitation treatment tank P, the supernatant liquid in which the suspended matter is precipitated and separated can be efficiently transferred to the disinfection tank.

The water collection pipe A has a water collection arm A in which a large number of treated water circulation holes A2 are provided on the other end A4 side of the water collection pipe body A3.
5 is formed by extending in a horizontal posture, and an end A6 of the water collecting arm A5 is attached to the water collecting pipe main body A3 so as to be vertically swingable. Further, a swing operation rod H1 is provided at one end A6 of the water collecting arm A5 to form a sliding operation part H, and the water collecting arm A5 is provided.
Is formed so that it can be fixed to the other end U2 of the U-shaped tube U when it is in a horizontal posture. Further, when the water collecting arm A5 is in a horizontal posture, the water collecting arm A5 is provided on a partition wall in the septic tank.
It is fixed to 7.

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

FIG. 2 is a vertical sectional front view of a sedimentation treatment tank of a septic tank.

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

[Fig. 4] Operation explanatory diagram of the water collecting device for the septic tank

FIG. 5 is an explanatory diagram of the main part mounting of the water collecting device for the septic tank.

FIG. 6 is a vertical cross-sectional side view of main parts of the water collecting device for the septic tank.

[Explanation of symbols]

A water collection pipe A1 connection A2 Treated water introduction hole H sliding operation part J fixed part K opening M manhole P settling tank U U-shaped tube U1 Discharge end

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

Claims (2)

(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 for collecting and supplying supernatant water of the precipitation treatment tank (P) to the treated water transfer device A water collecting device for use in constructing the treated water transfer device, wherein a U-shaped pipe (U) is erected in the precipitation treatment tank (P), and one end side of the U-shaped pipe (U) is provided. The treated water is added to the precipitation treatment tank (P).
The discharge end (U1) that can be led out to the outside is formed, the other end (U2) side is extended above the water level of the precipitation treatment tank, and an opening ( K) is formed below the water level, has a connection part (A1) that can communicate with the opening part (K), and has a water collecting pipe (A) having a treated water introduction hole (A2). , The other end (U2) side of the U-shaped pipe (U) slidably up and down between a submerged water collecting position communicating with the opening (K) and a take-out position above the opening (K). And a fixing portion (J) for fixing the water collection pipe (A) in a state of being connected to the opening (K) in communication with the water collection pipe (A) through the manhole (M). Purification provided with a sliding operation part (H) for sliding the water pipe (U) from the submerged water collecting position to the take-out position. Tank catchment devices. 2. The water collecting pipe (A) is a water collecting pipe main body (A).
3) A water collecting arm (A5) having a large number of treated water introducing holes (A2) provided on the other end side thereof is formed to extend in a horizontal posture, and the end of the water collecting arm (A5) is formed. The septic tank water collecting device according to claim 1, wherein the water collecting pipe main body (A3) is attached so as to be vertically swingable.