JPH1099883A - Air supply pipe-supporting structure of purifying tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance arranging workability arranging an air supply pipe in a purifying tank. SOLUTION: Engaging parts 21 are provided to the vertical wall forming members forming vertical walls within a purifying tank and an engaging fixing member 1 having parts to be engaged capable of being engaged with and fixed to the engaging parts 21 along an up and down axis is provided and an air supply pipe D1 is fixed to the engaging fixing member 1 to integrate the engaging fixing member 1 with the air supply pipe D1 to easily perform the engaging operation of the parts to be engaged with the engaging parts 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply pipe support structure for a septic tank in which an air supply pipe for supplying air into the septic tank is erected and fixed in the septic tank.

[0002]

2. Description of the Related Art Conventionally, as a structure for supporting an air supply pipe of a septic tank of this type, for example, a casing for mounting and fixing a filtration membrane plate in a septic tank is provided, and the air supply pipe is supported on the upper and lower parts of the casing. It has been known to provide a support portion and attach and fix an air supply pipe over the support portion.

[0003]

According to the above-mentioned conventional structure, when manufacturing and assembling the septic tank, the air supply pipes may be fixed to the mounting portion in sequence and assembled, but the septic tank is operated. In the case where it becomes necessary to remove the air supply pipe for the purpose of maintenance or the like during the period, in order to attach and fix the air supply pipe again, the water to be treated in the septic tank usually has low transparency. In addition, since the work in a narrow place is forced, the water to be treated is extracted in advance, and a work space for mounting the air supply pipe to the mounting portion is secured and the air supply is performed unless the work is performed. It becomes difficult to attach the pipe in a standing position that can reliably supply air, and the workability in such a case is extremely low, and improvement is desired. The present invention has been made in view of the above circumstances.

[0004]

In order to achieve this object, a feature of the present invention is to provide a vertical wall forming member which forms a vertical wall inside a septic tank and to provide an engaging portion, and to extend the vertical axis along the vertical axis. An engagement fixing member having an engaged portion slidably engageable and fixed to the engagement portion is provided, and an air supply pipe is fixed to the engagement fixing member. The engaged portion is integrally formed with the engaging portion so as to be easily engaged with the engaging portion, and the air supply pipe is swingably fixed to the engagement fixing member around the vertical axis. The vertical wall forming member may be a partition wall for partitioning a water treatment tank in a septic tank, and the vertical wall forming member may be a frame forming a membrane separation device inside the septic tank. May be. Further, the engagement fixing member may be a plate-like body provided between the vertical wall forming members.

[Effects] That is, since the air supply pipe is integral with the engaging and fixing member, the engaged portion is provided on the engaging and fixing member, and the engaging portion is formed on the vertical wall forming member in the septic tank. With this arrangement, the air supply pipe can be fixed to the vertical wall forming member of the purification tank by engaging and fixing the engaged portion with the engaging portion. At this time, since the engaged portion is configured to be slidably engageable with the engaging portion along the vertical axis, the engagement between the engaging portion and the engaged portion is prevented. The joint operation can be performed by a simple operation of merely sliding up and down, and can be easily and reliably performed, and the air supply pipe can be securely fixed to the vertical wall forming member. Therefore, it is easy to reliably hold the air supply pipe in a position where air can be reliably supplied to the air supply target. For example, the air supply pipe for the air diffuser of the septic tank is drawn out of the septic tank and maintenance is performed. In the case where the water is introduced again into the septic tank, the air supply pipe can be securely fixed without pulling out the water to be treated in the septic tank, and the attitude of the air diffuser can be maintained. The workability of arranging the air supply pipe has been improved.

Here, if the air supply pipe is fixed to the engaging and fixing member so as to be swingable about a vertical axis, the air supply pipe is obstructed by another part in the septic tank. The air supply pipe can be introduced into the septic tank in such a posture that it does not become disturbed, and the arrangement can be changed so that the posture is changed to a posture suitable for air supply after introduction. Installation workability is improved. The vertical wall forming member may be a partition partitioning between water treatment tanks in a septic tank, or a frame forming a membrane separation device inside the septic tank, and the vertical wall forming member may be a partition wall. In this case, the engaging and fixing operation can be easily performed by forming an engaging portion on the partition wall portion exposed to the upper side of the water to be treated, and the present invention relates to a frame for forming a membrane separation device inside the septic tank. If the joint is formed, there is an advantage that the engagement operation can be easily performed while inserting and removing the air supply pipe from the manhole of the septic tank. In addition, if the engagement fixing member is a plate-like body spanned between the vertical wall forming members, for example, the air supply pipe supplies air to a diffuser for a membrane separation tank in a purification tank. In such a case, the plate-like body can be attached with the attachment portion where the filtration membrane plates of the membrane separation device are to be juxtaposed as the engagement portion, so that the configuration of the existing septic tank without forming the attachment portion in particular. There is an advantage that the air supply pipe can be easily mounted by utilizing the above.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a septic tank employing the air supply pipe support structure of a septic tank according to the present invention is provided with mirror portions X1 and X2 at both ends of a cylindrical septic tank main body X to form a sealed space therein, A plurality of partition plates capable of forming a plurality of water treatment spaces in a water-tight manner are provided and divided, and a flow rate adjustment tank N, a denitrification tank E1, a membrane separation tank E2, and a discharge pump tank T are arranged on the upstream side from the upstream side. And a disinfection tank Q is further provided. In addition, a manhole H used for maintenance and the like is provided above each tank.
Is provided.

The flow rate adjusting tank N receives raw water to be treated flowing into the purification tank from an inlet I provided in one mirror portion X1 of the purification tank main body X, and removes impurities in the treated water. By anaerobic bacteria growing inside while removing sediment,
A first pump P1 for transferring the water to be treated to the denitrification tank E1 is provided in the water treatment chamber for temporarily storing the water to be treated while performing the anaerobic treatment of the water to be treated, Even when there is no inflow of the water to be treated for a long period of time, the water to be treated is constantly transferred to the denitrification tank E1 so as not to hinder the water treatment in each of the subsequent water treatment chambers. In addition, relatively large impurities among the water to be treated flow into the flow rate adjusting tank N in a state where the impurities are separated into solid and liquid by the filtration screen F. Thereby, it is configured to be crushed and fragmented and flow into the flow rate adjusting tank N.

The denitrification tank E1 is connected to the first pump P1 by connecting an inflow pipe A1 into the water treatment chamber adjacent to the flow rate control tank N, through which water to be treated from the flow rate control tank N flows. To form an inflow passage for the water to be treated. In addition, a second pump P2 is provided inside, and a transfer pipe A
2 is provided to transfer the water to be treated to the membrane separation tank E2. In addition, a stirring pump P3 for stirring and circulating the water to be treated in the tank is provided to mix the water to be treated in the tank and mix the water to be treated with a high BOD load with the nitrified water to be treated. In addition, it is configured to perform advanced denitrification processing.

As shown in FIGS. 2 and 3, the membrane separation tank E2
Is provided with the inflow path A3 in a partition plate separating the denitrification tank E1, and a return port A4 for returning the water to be treated excessively flowing from the denitrification tank E1 to the denitrification tank E1. To form a return path for the water to be treated.
Usually, about 80% of the water to be treated among the water to be treated flowing from the inflow path A3 is returned from the return path A4. As shown in FIGS. 2 and 3, the membrane separation tank E2 is provided with a slit section for engaging an end of a flat filtration membrane plate 1 having a flat filtration surface in the water treatment space so as to be vertically slidable. A plurality of slit panels 2 are provided side by side, and a pair of slit panels 2 are attached and fixed in a parallel state between a pair of partition plates W, W which partition both ends from a water treatment tank adjacent to the membrane separation tank E2. At the same time, both end portions 11 of the filtration membrane plate 1 are separately engaged with the slit portions 21 facing each other between the slit panels 2 arranged side by side, so that the slit panels 2 can be erected and fixed between the slit panels 2. It is. The pair of partition plates W, W are provided with a plurality of mounting portions W1, W1... For mounting the slit panel 2 by using the partition plates as vertical wall forming members, and slits as engagement fixing members are provided. The slit panel 2 is formed in an engagement portion for engaging the panel 2, and the slit panels 2 can be attached to each other so as to be capable of changing the distance therebetween, and can be easily attached and fixed regardless of the size and shape of the filtration membrane plate 1. It is configured in. Air bubbles are supplied to the filtration membrane plate 1 below the filtration membrane plate 1 to prevent sludge or the like from adhering excessively to the membrane surface, and to form a circulating flow in the membrane separation tank E2. A diffuser D for supplying oxygen to the water to be treated is provided inside. The air diffuser D is an air supply pipe D for supplying air.
1 is connected to a diffuser tube D2 formed by bending in a square shape, and the air supply tube D1 is fixed to the slit panel 2 so that the diffuser tube D2 is positioned at an appropriate position. It can be arranged and fixed. One of the filter membrane plates of the slit panel 2 is provided with an attachment portion 1a for easily engaging and fixing the air diffuser tube, and is fixed. With such a configuration, when attaching the filtration membrane plate 1 to which the diffuser tube is attached to the slit panel, the filtration membrane plate 1 and the air supply pipe D1 can be integrally fixed. The air diffusion tube can be disposed so as to be disposed at an appropriate position (a position below the filtration membrane plate 1 and capable of uniformly diffusing the filtration membrane plate 1). After that, if a filtration membrane plate is provided between the slit panels, the membrane separation device M can be formed in the membrane separation tank E2. In addition, a water intake pipe M1 is connected to the filtration membrane plate 1, and a water collection pipe M2 for connecting the filtered water from the water intake pipe M1 and guiding the filtered water to the outside of the membrane separation tank E2 is connected. And the open end of the treated water advection pipe is opened downward in the adjacent filtered water storage tank T. Note that a dummy filtration membrane plate having no membrane separation function is used for the filtration membrane plate 1 to which the air diffuser is attached for convenience.

The filtered water storage tank T is provided with the membrane separation tank E2.
And a discharge pump P4 for storing the treated water almost quantitatively, and for transporting the treated water to a disinfection tank Q containing a chemical disinfectant Q1. It is composed.

The disinfecting tank Q contains a disinfectant Q1 in a container formed above the filtered water storage tank T,
The treated water transferred from the filtered water storage tank T is provided so as to be able to come into contact with the disinfectant Q1, and the treated water that has come into contact with the disinfectant Q1 and is disinfected can be discharged to the outside.
In addition, general chemicals that disinfect water to be treated, including chemical disinfectants, are generically referred to as disinfectants Q1.

[Other Embodiment] Another embodiment will be described below. In the above configuration, the air supply pipe is provided on the slit panel.However, when disposing the filtration membrane plate in the membrane separation tank, a self-supporting casing is provided, and when the filtration membrane plate is held in the casing, the air supply pipe is provided. The air supply pipe can be fixed using the casing as a vertical wall forming member. Further, an air supply pipe may be attached and fixed to the slit panel,
In this case, the slit panel serves as a vertically slidable engagement fixing member using the partition plate W as a vertical wall forming member. Further, the air supply pipe may be attached and fixed so as to be rotatable (including rotation or swing) around an axis with respect to the attachment / fixation member. In such a case, the attachment / fixation member may be used. At the time of the insertion / removal operation for mounting / fixing, the air supply pipe can be engaged and fixed while maintaining a posture that does not hinder the insertion / removal operation, and after the engagement / fixing operation, the air supply pipe is moved around its axis. It is advantageous in the working process because the air diffuser can be arranged at an appropriate position simply by turning the air diffuser (see FIG. 4).

The term "water treatment space" as used in the present invention is a general term for a space which is formed in a watertight manner by a partition plate and accommodates the water to be treated. Is particularly referred to as a membrane separation tank.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a vertical side view of a septic tank.

FIG. 2 is an exploded perspective view of a membrane separation device.

FIG. 3 is a plan view of a membrane separation device.

FIG. 4 is a plan view of a membrane separation device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engagement fixing member 21 Engagement part D1 Air supply pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koichi Okada 1-1-1 Hama, Amagasaki-shi, Hyogo Inside Kubota Research Institute of Technology Co., Ltd. (72) Inventor Kazuyuki Honda 2 Takamatsu, Kosai-cho, Koga-gun, Shiga Prefecture 1 Kubota Shiga Plant

Claims (5)

[Claims] An engaging portion (21) is provided on a vertical wall forming member forming a vertical wall inside a septic tank, and is slidably engageable with the engaging portion (21) along a vertical axis. An engagement fixing member (1) having an engaged portion is provided, an air supply pipe (D1) is fixed to the engagement fixing member (2), and the engagement fixing member (1) is connected to the air supply pipe ( An air supply pipe support structure of a septic tank in which the engaged portion is easily integrated with the engaging portion (21) integrally with D1). 2. The air supply pipe support structure for a septic tank according to claim 1, wherein the air supply pipe (D1) is swingably fixed to the engagement fixing member (1) around a vertical axis. . 3. The air supply pipe support structure for a septic tank according to claim 1, wherein the vertical wall forming member is a partition plate (W) that partitions between water treatment tanks in the septic tank. 4. The air supply pipe support structure for a septic tank according to claim 1, wherein the vertical wall forming member is a frame forming a membrane separation device inside the septic tank. 5. The air supply pipe support structure for a septic tank according to claim 1, wherein the engagement fixing member (1) is a plate-like body spanned between the vertical wall forming members.