JPS6054789A - Constructing method of septic tank - Google Patents

Abstract

PURPOSE:To blow the air forcibly into the sewage with wave force in purifying the sewage by installing in the sea an assembly having an air intake pipe having plural float pumps at its side and a check valve and consisting of an inflow, an intermediate, and a discharge part, and introducing the sewage therein. CONSTITUTION:An inflow part 2 provided with an inflow pipe 6 for sewage, an intermediate part 1, and a discharge part 3 equipped with a treated water discharge pipe 7 are manufactured on shore. The three parts are assembled by connecting with a flange part to constitute a sewage septic tank which is fixed to supporting piles in the seawater. The sewage is charged from the inflow pipe 6, agitated and purified with a large amt. of air sent from an air supply pipe 51 of a float pump 54, and discharged to the outside of the septic tank from a discharge pipe 7. When the float pump 54 which is lifted up and down by wave force is lowered, the external air flows into the pump from an air intake pipe 52. When the float pump 54 is raised, the air in the pump can not go out because of a check valve 53 and flows into the septic tank from the air injecting pipe 51 to agitate and purify the sewage.

Description

[Detailed Description of the Invention] The present invention is mainly used for the terminal treatment of sewerage systems in seaside areas.
! This relates to the method of constructing a septic tank as a facility.

The penetration rate of sewage systems in Japan has been gradually increasing in recent years.
This is still low compared to world standards.

In general, it has been difficult to install end-of-life sewage treatment equipment in coastal cities and fishing villages due to their poor topographical and geographical location.

For example, it is difficult to secure land in urban areas, and this is due to the poor conditions in Kekhan, such as the steep slopes and often facing the sea below.

The present invention was made to correct such problems.
The purpose of the present invention is to provide a construction method for a septic tank that can promote the spread of sewage systems by installing a treatment plant above water that purifies sewage by pumping a large amount of air into the sewage and stirring it.

Next, purification 4r used in the construction method of the present invention! The structure of the I device will be explained based on the drawings.

The septic tank of the present invention is a hollow structure with an inflow pipe and a discharge pipe connected to both ends.

<A> Septic tank body The material and the shape of the planar object do not matter, but it is a Breha.

It is designed to have a shape that can be converted into a plastic, manufactured in a factory, and assembled on-site. (Refer to Fig. 5) In this embodiment, a rectangular parallelepiped hollow structure is formed by connecting the middle part 1 of a box with open ends, and an inflow part 2 is located at both ends.
, and the discharge part 3 to form the septic tank main body Δ.

Then, on the left and right side walls of the hollow structure, flow 1~
A pump section 5 having a built-in pump 54 is provided in a protruding manner.

<Mouth> Middle part The intermediate part 1 is a box with both ends open.

Connection flanges 4 for connecting each box body are provided on each side of the open end portions toward the outside of the box body.

Further, pump parts 5 are provided protruding outward from the upper part of the side wall of the box body at regular intervals.

An air supply pipe 51 from the pump section 5 penetrates the side wall of the box, enters the inside of the box, and opens at the bottom of the box.

<C> Inflow part The inflow part 2 is a box with one end open, and the open part has the same connecting flange 4 as the intermediate part 1 protruding outward.

Further, an inflow hole is provided above the wall surface facing the open portion, and an inflow pipe 6 is provided to protrude from the inflow hole toward the outside.

As in the case of the intermediate part 1, a pump part 5 is provided on the side wall of the box so as to protrude outward.

Therefore, there is an air supply pipe 51 inside the box, which, like the intermediate part 1, penetrates the wall surface and is connected to the pump part.

<2> Emission part The structure of the discharge section 3 is exactly the same as that of the inflow section 2.

However, the portion of the inflow portion 2 that corresponds to the inflow pipe 6 is assumed to be the discharge pipe 7.

<E> Pump part The pump section 5 is a hollow box without a bottom surface.

After installation, they are placed approximately at the same level as the water level, and are protruded from the upper part of the wall of the septic tank at regular intervals and at the same height in the longitudinal direction.

Furthermore, an air feed pipe 51 is installed on the side wall side of the purification 1n tree rest A, which penetrates the side wall and leads to the inside of the septic tank.

Further, an air intake pipe 52 is installed facing the outside on the opposite side from the air feed pipe 51, and a check valve 53 is installed in the middle.

This check valve 53 allows air from outside into the pump section,
This is a valve that does not allow air inside the pump to escape to the outside.

Further, there are flow 1 to pump 54 in the hollow part of the pump part 5, and the inside of the pump part moves up and down according to the vertical movement of the sea surface, and air is sent into the septic tank.

Next, the construction method of the present invention will be explained.

<A> Installation of support piles A plurality of support piles 8 are installed in two rows at intervals slightly larger than the width of the septic tank body Δ, and a predetermined distance from the coast toward offshore.

<Exposure> The inflow part 2, the plurality of intermediate parts 1, and the discharge part 3 manufactured at the transport assembly factory were transported to the dock by towing on the sea, and the connecting flanges 4 were connected and assembled on site.

Of course, it may be assembled near the installation site and towed to the site for installation.

At this time, as described above, each pump section 5 is placed at a position approximately equal to the water level.

] Set a position in the pump section where the float pump can move up and down according to the vertical movement of the water surface due to wave force, and tether and cover the space between the septic tank body A and the support pile 8 with a support rod or rope.

<C> Operation Inflow pipe 6J: The sewage that has flowed into the septic tank is stirred and purified by the necessary air sent from the air supply pipe 51, and purified (n) is discharged to the outside from the discharge pipe 7.

Air is introduced in the following manner.

Furthermore, when the float pump 54 in the pump section, which moves up and down due to wave force, descends, outside air enters the pump section from the air intake pipe 52.

In addition, when the float pump rises, the air inside the pump section is released by the action of the check valve 53 and the air intake pipe 5.
2, the air cannot go outside, and is sent into the septic tank through the air feed pipe 51.

Furthermore, since the air supply pipe opens at the bottom of the septic tank, the air rises inside the septic tank and at the same time serves as agitation.

<2> Other Examples 1 When using a septic tank as a breakwater, two rows of support piles 8
It is also possible to lay the slab 9 at the top tip of the.

<E> Other embodiment 2 The pump part is the same as this embodiment 1. ;If it is on the surface of the water to do its work, it is possible to fix the body of the septic tank or to submerge it.

The present invention, as explained above, is based on a completely new idea of setting up a large septic tank on the sea, so the following effects can be expected.

<B> When constructing a septic tank on land, there is no need for excavation, damming, drainage work, etc., and prefabrication allows for factory production and on-site assembly, which is extremely advantageous in terms of time and economy.

In the above-ground type, there is a restriction on the area for construction, so it is necessary to increase the depth and increase the capacity, which requires deep excavation, but this is not necessary with the present invention.

Kuha〉The running cost is very low because it uses wave power as a purification method.

2〉Since the construction method involves floating the septic tank body underwater, it is not affected by various conditions such as landing on the ocean floor, lake bed, etc., or sandy soil.

<E> Can be used as breakwater 111PUwg.

Kube> Sewerage systems can be installed in any area, such as coastal areas, lakes, and marshes (=J), regardless of location on the ground, allowing for the spread of sewerage systems.

[Brief explanation of drawings]

Fig. 1.2 Perspective view of the septic tank device of the present invention. Fig. 2. Side view during construction. Fig. 3: Front view during construction. Fig. 4: Explanatory drawing of the embodiment. Explanatory diagram 1: Middle part 2: Inflow part 3: Discharge part 4 two connecting flanges 5: Pump part 6: Inflow pipe 7: Extrusion pipe 8: Support pile 9 Varnish slab 51: Air feed pipe 52: Air intake pipe 53: Check valve 54: Float pump A: Septic tank body B: Sea surface

Claims (1)

[Claims] A method for constructing a septic tank, characterized in that tanks previously manufactured on the ground are connected and installed on the water, and piping is connected to the ground.