JP2002355687A - Container for inclined soil tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recyclable container for an inclined soil tank low in cost, easily handled because of lightweight properties, utilizable even in a home and having sufficient strength and corrosion resistance. SOLUTION: The container for the inclined soil tank has a bottom surface 11 inclined so as to allow sewage or the like to flow down naturally, side walls 12 surrounding the bottom surface, water barrier plates 13 erected on the bottom surface at a predetermined height in the direction right-angled to the natural flow-down direction to interrupt the flow channel of sewage or the like and the discharge ports 14 provided on the downstream side of the bottom surface and/or the side walls. The bottom surface and the side walls or the bottom surface, the side walls and the water barrier plates are formed of polystyrene with an expansion ratio of 10-20 times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention purifies sewage such as domestic wastewater, livestock wastewater, effluent from a septic tank or water in waterways polluted by the wastewater by microorganisms in the soil in the process of natural flow. Used for water purification equipment,
The present invention relates to a water-impervious inclined soil tank container filled with the soil.

[0002]

2. Description of the Related Art Wastewater such as domestic wastewater, livestock wastewater, septic tank treated water, and water in waterways and the like polluted by the wastewater, etc., contain organic components that cause pollution, such as B
Contains OD or COD, phosphorus component or nitrogen component. Since the components contained in the sewage and the like can be purified by the water purification ability of certain microorganisms in the soil, the treated raw water such as the sewage is naturally collected in an inclined soil tank filled with inclined soil. BACKGROUND ART A water purification device that performs a water purification treatment by the action of the microorganism without flowing down and using artificial energy has been used.

[0003] In the water purification apparatus, a stagnant portion is formed on the open soil on the upper side of the inclined soil tank, and the raw water such as the sewage is retained in the stagnant portion so that no air is supplied to the soil. In this way, the microorganisms in the soil are subjected to water purification treatment under anaerobic conditions, or air is supplied by burying a ventilation structure or a permeable soil such as sand or gravel below the inclined soil tank. In this way, the microorganisms in the soil are subjected to a water purification treatment under aerobic conditions. Also,
A water collecting section for treated water subjected to water purification treatment is provided downstream of the inclined soil tank to manage the quality and flow rate of treated water.

[0004] As the water purification apparatus, a water purification tank which also serves as a planter for small-scale home gardening using the soil surface as a planting space, or a water purification apparatus which also serves as a flower bed or a hydrophilic park in a large scale. There is. In the water purification apparatus, the inclined soil tank is made to be impermeable, so that sewage or the like, which is raw water to be treated, leaks out of the inclined soil tank to contaminate the surroundings.

[0005] In the above-mentioned water purification device, a new flow path is formed even if the soil is partially clogged by tilting the soil filled in the inclined soil tank, so that the clogging is prevented. Try to make it less likely.

[0006] The conventional inclined soil tank is, for example, a small-sized water-purifying tank that is formed by using an impermeable layer such as an inclined bedrock as a bottom surface and filling it with soil, or used as the small-scale water purification tank. On the bottom of a water-impervious container with an open top, a plurality of water-impervious plates are provided to block the flow path of sewage and the like. Let the water purification process under the conditions,
The container is filled with air-permeable soil such as sand or gravel to form a water purification treatment under aerobic conditions.

[0007]

However, if the conventional small-sized inclined earthen vessel is made of a corrosion-resistant metal such as stainless steel, it is expensive, and even if it is small, it is relatively heavy and difficult to handle. However, if the soil is used for a long period of time and soil water or the like is allowed to flow down, there is a possibility that corrosion may occur and the water barrier property cannot be maintained, and the surroundings may be polluted.

The present invention has been made to solve the above problems, and is inexpensive, lightweight and easy to handle, can be used at home, has sufficient strength and corrosion resistance, and can be recycled. An object of the present invention is to provide an earth tank.

[0009]

SUMMARY OF THE INVENTION The present invention is used in a water purification apparatus for purifying sewage and the like by natural flow of water into inclined soil having a water purification ability. A tank container, a bottom surface inclined to allow the sewage or the like to flow naturally, a side wall surrounding the bottom surface, and a standing height provided on the bottom surface at a predetermined height in a direction perpendicular to the natural flow direction. A water blocking plate that blocks a flow path of the sewage and the like, and a drain port provided downstream of the bottom surface and / or the side wall, wherein the bottom surface and the side wall, or the bottom surface, the side wall, and the water blocking plate Is formed of styrene having an expansion ratio of 10 to 20 times.

The present invention is also directed to a water-purifying apparatus used for a water-purifying apparatus for purifying sewage or the like by allowing natural water to flow down into sloping soil having a water-purifying ability. A bottom surface inclined so as to allow the sewage or the like to flow naturally, a side wall surrounding the bottom surface, and a bottom provided on the bottom surface at a predetermined height in a direction perpendicular to the direction of the natural sewage; A water blocking plate for blocking the flow path of
Or, a container having a drain port provided on the downstream side of the side wall, a plurality of stacked, the drain port provided on the downstream side of each of the containers is arranged alternately, the bottom surface and the side wall, Alternatively, the bottom surface, the side walls, and the water shield plate are formed of styrene having a foaming ratio of 10 to 20 times.

Further, a ventilation structure may be provided near the downstream side of the water shield plate.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of an inclined earthen vessel according to the present invention, wherein (a) is a plan view,
(B) is a sectional view taken along line AA of (a). FIG. 2 shows FIG.
It is sectional drawing for demonstrating the processing of the sewage etc. in the container for inclined earth tanks. FIG. 3 is a sectional view showing a second embodiment of the inclined earthen vessel according to the present invention. FIG. 4: shows what used the air permeable structure to the container for inclined earth tanks of FIG. 1, (a) is a top view, (b) is BB sectional drawing of (a).

As shown in FIG. 1, a container 10 for an inclined soil tank according to a first embodiment of the present invention has a bottom surface 11 inclined so that treated raw water such as sewage flows naturally, and a side wall 12 surrounding the bottom surface 11. A water-blocking plate 13 erected on the bottom surface 11 at a predetermined height in a direction perpendicular to the natural flow-down direction to block a flow path of the sewage or the like, and a downstream side of the bottom surface 11 and / or the side wall 12. Has a drain port 14 provided on the downstream side of the bottom surface,
The bottom surface 11 and the side wall 12 or the bottom surface 11, the side wall 12 and the water blocking plate 13 are formed of styrene having a foaming ratio of 10 to 20 times. The predetermined height is
The height is lower than the surface of the soil 20 filled in the inclined soil tank container 10.

By inclining the bottom surface 11 of the inclined earth tank 10, as shown in FIG. 2, the treated raw water and the treated water 23 flow naturally through the filled soil 20, and the treated water formed on the bottom surface 11 is formed. Even if the flow path of the raw water and the treated water 23 is clogged, a new flow path is formed by natural flow, and the treated raw water and the treated water 23 flow to the downstream side, and the water purification treatment is continuously performed without interruption.

The bottom 11, the side walls 12, and the water shield 13
Are preferably formed integrally with each other, and it is preferable that a reinforcing rib 15 is formed integrally with the above-mentioned member at a lower portion of the bottom surface 11. The shape, number, and the like of the ribs 15 may be appropriately selected and provided. If the bottom surface 11 has sufficient strength and is hardly deformed, the ribs 15 may be omitted. Further, in a case where the bottom surface 11, the side wall 12, and the water shield plate 13 are not integrally formed and assembled, a water-impervious container must be provided so that sewage and the like do not leak from the connecting portion. By using the watertight container as the container 10 for the inclined soil tank, it is possible to prevent sewage and the like from leaking out of the container and contaminating the surroundings.

The drain port 14 is provided with the inclined earth tank 1.
In order to prevent the outflow of the soil 20 filled with zero, a net, a plate made of a porous material and the like are provided so that only the treated water 22 flows out without the soil 20 flowing out. Is preferred. The thickness and size of the bottom surface 11, the side walls 12, the water shielding plate 13 and the like, and the number, size, position, and the like of the drain holes 14 may be appropriately selected.

The container 10 for the inclined soil tank is filled with a foaming ratio of 10 to 2
By forming with styrene of 0, the production cost is low, and it is more robust and easy to handle than a general styrene foam having an expansion ratio of about 50, and can be used at home, and has sufficient strength and weather resistance. can do. Further, by applying a water-based weather-resistant paint to the surface of the inclined earth tank 10, it is possible to further improve the weather resistance. In addition, the styrene of the expansion ratio,
Since it has a heat insulating effect and is excellent in heat retention, it has an effect of activating the water purification treatment of microorganisms. In addition, the styrene of the expansion ratio has sufficient corrosion resistance to the raw water treated such as sewage and the soil 20 to be filled, and the inclined earth tank 10 formed of the styrene of the expansion ratio can be recycled. It is.

When water purification treatment of sewage or the like is performed using the inclined soil tank container 10, as shown in FIG. Filled soil 20 is supplied, and treated water 21 such as sewage is supplied from the upstream side, and treated water 22 is allowed to flow out of the drain port 14 to the outside by natural flow. As soil 20
When air-permeable soil such as sand or gravel is used, water purification treatment is performed under aerobic conditions using microorganisms. However, in the vicinity of the water shield plate 13, the flow path of the treated raw water and the treated water 23 is formed so as to pass over the water shield plate 13. Since the treated water 23 stays in the soil 20 under the treated water 23, a water purification treatment is performed under anaerobic conditions by microorganisms.

When a non-breathable soil is used as the soil 20, the treated raw water 21 is retained on the soil surface 24, and a water purification treatment is carried out under the anaerobic condition by microorganisms in the soil 20 thereunder. You may be asked to
In the vicinity of the downstream side of the water shield plate 13, there is provided a gas permeable structure 40 formed of a net, a porous material, or the like as shown in FIG. Water purification treatment may be performed under aerobic conditions by microorganisms.

As the soil 20, one having a sufficient purification treatment capacity may be appropriately selected and used. In addition, other materials required for water purification, for example, a solid organic carbon source may be used.

A flow control tank (not shown) for treating raw water such as sewage is provided upstream of the inclined earth tank 10, and a water collecting tank (not shown) is provided below the drain port 14. Adjust the flow rate of treated water. In addition, necessary items are appropriately selected and prepared, and a water purification treatment of sewage or the like is performed.

As shown in FIG. 3, the container 30 for the inclined soil tank according to the second embodiment of the present invention is different from the container 1 for the inclined soil tank shown in FIG.
And a bottom surface 31 which is formed in such a manner that the raw water such as sewage flows down naturally.
, A water-blocking plate 33 that stands on the bottom surface 31 at a predetermined height in a direction perpendicular to the natural flow-down direction and blocks a flow path of the sewage or the like, and the bottom surface 31 and / or the side wall 32. A container 35 having a drain port 34 provided on the downstream side of
Although a plurality of, for example, five are shown here, the drain ports 3 which are stacked and provided on the downstream side of each container 35 are provided.
6 are alternately arranged, and the bottom surface 31 and the side wall 32, or the bottom surface 31, the side wall 32, and the water shielding plate 33
Is made of styrene having an expansion ratio of 10 to 20 times. Note that the predetermined height is lower than the surface of the soil filled in the container 35.

The drain port 36 of the lowermost container 35 is preferably provided on the side wall 32. By providing the drain port 36 at such a location, the treated water can be easily discharged to the outside. The container 30 is the same as the container 10 for the inclined soil tank shown in FIG. 1, and the detailed description is omitted here. In addition, container 3
5, how to stack or connect each container 35, for example, fixing each container 35 and the adjacent container 35 with bolts or the like using an auxiliary plate, or providing a fixed plate fitting portion on the outer side wall. The connection of the fixing plate by fitting it here may be appropriately selected.

Each container 35 is filled with soil as shown in FIG. 2, and treated raw water 21 such as sewage is supplied from a flow rate adjusting tank (not shown) installed on the upstream side. The raw water and the treated water 23 are allowed to flow naturally to perform a water purification treatment, and the treated water 22 is discharged from the drain port 36 of the lowermost container 35.
To discharge.

In addition, the permeable structure 40 shown in FIG. 4 may be used for the container 30 for the inclined soil tank.

[0026]

According to the present invention, it is lightweight and easy to handle,
It can be used at home, has heat insulation effect, has excellent heat retention, has sufficient strength and weather resistance, has sufficient corrosion resistance to sewage, etc., has low manufacturing costs, and is recyclable. A possible container for the inclined earth tank can be obtained.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of an inclined earthen vessel according to the present invention, wherein (a) is a plan view and (b) is a cross-sectional view taken along line AA of (a).

FIG. 2 is a cross-sectional view for explaining treatment of sewage and the like in the inclined soil tank container of FIG. 1;

FIG. 3 is a sectional view showing a second embodiment of the inclined earthen vessel according to the present invention.

FIGS. 4A and 4B show a container using a permeable structure for the inclined earth tank of FIG. 1, wherein FIG. 4A is a plan view and FIG. 4B is BB of FIG.
It is a line sectional view.

[Explanation of symbols]

 10, 30 Inclined soil tank container 11, 31 Bottom surface 12, 32 Side wall 13, 33 Water barrier plate 14, 36 Drain port 15 Rib 20 Soil 21 Treated raw water 22 Treated water 23 Treated raw water and treated water 35 Container 40 Breathable structure

Claims (3)

[Claims] 1. A container for a water-impermeable inclined soil tank, which is used for a water purification device for purifying sewage and the like by natural flow into inclined soil having a water purification ability and is filled with the soil, A bottom surface inclined so that sewage or the like naturally flows down, a side wall surrounding the bottom surface, and a bottom surface, which is erected on the bottom surface at a predetermined height in a direction perpendicular to the natural flow-down direction to form a flow path for the sewage or the like. A water blocking plate for blocking, and a drain port provided downstream of the bottom surface and / or the side wall, wherein the bottom surface and the side wall, or the bottom surface, the side wall and the water blocking plate have a foaming ratio of 10 to 20. A container for an inclined soil tank, which is formed of double styrene. 2. A container for a water-shielding inclined soil tank, which is used for a water purification device for purifying sewage and the like by natural flow into inclined soil having a water purification ability, and is filled with the soil. A bottom surface inclined so as to allow sewage or the like to flow naturally, a side wall surrounding the bottom surface, and the bottom surface, which is erected at a predetermined height in a direction perpendicular to the direction of the natural spillage to form a flow path for the sewage and the like. A plurality of containers each having a water blocking plate for blocking and a drain port provided on the downstream side of the bottom surface and / or the side wall were stacked, and the drain ports provided on the downstream side of each container were alternately arranged. It is a structure, The said bottom surface and the said side wall, or the said bottom surface, the said side wall, and the said water-impervious plate are formed of polystyrene with a foaming ratio of 10-20 times, The container for inclined earth tanks characterized by the above-mentioned. 3. The structure according to claim 1, wherein a ventilation structure is provided near the downstream side of the water shield plate.
The container for inclined soil tank according to the above.