JPH0696154B2 - Underground buried purification channel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground buried purification water channel suitable for preventing water pollution.

[0002]

2. Description of the Related Art As is well known, water pollution of rivers, lakes and marshes is caused by discharging discharged water such as urban sewage and industrial wastewater into these public water bodies. By the way, when the public waters are organically polluted and the dissolved oxygen is reduced, fish and the like cannot live there, and if the coarse floating substances generated due to organic pollution flow into the paddy fields, the rice rots.

Examples of such water quality conservation measures include, for example,
In the case of public sewers, sewage is first stored and purified before being discharged into public water bodies.

[0004]

Of the wastewater discharged into public water bodies, domestic wastewater has a relatively low pollutant concentration and high fluidity, but such wastewater contains food residues. Initially, it contains a lot of organic matter, most of which flows into public waters before oxidation. As is obvious below, oxidation of organic matter flowing into the above water area becomes active, oxygen deficiency, eutrophication, sludge accumulation,
As it causes other harmful effects, the water quality of rivers, lakes, seas, etc. deteriorates.

[Object of the Invention] In view of the above technical problems, the present invention utilizes a water channel structure and a channel buried site in the process until the discharged water is discharged to a target area, so that the discharged water is highly efficient and economical. The purpose is to provide an underground buried purification channel that can be purified.

[0006]

In order to achieve the intended purpose, the underground buried purification water channel according to the present invention has a plurality of water channel pipes each having a filter bed inside, along a route for laying the water channel. It is characterized in that they are arranged so that a separation gap is interposed between these connection ends, and the separation portion is closed by a water-permeable material having a tubular shape. In the above, it is desirable that a groove, a removable filter medium, or the like be provided on the filter floor surface of the water pipe.

[0007]

In the underground buried type purified water passage according to the present invention, in the installed state where it is buried underground, the discharged water (dirt water) to be purified is introduced from the inlet side and made to flow to the outlet side.
The discharged water thus introduced into the waterway is subjected to the effects of contact oxidation, adsorption, aeration, precipitation, etc. while flowing on the filter bed surface in the waterway piping where aerobic and anaerobic bacteria are present. As the water is purified and a part of the treated water permeates the water-permeable material and penetrates into the ground, the water in the waterway decreases. When the discharged water is purified and reduced in this way,
Since it is possible to match the flowing water speed after the reduction and the oxidation speed, the treatment efficiency of the discharged water is improved. Organic matter of water that has permeated outside the waterway is decomposed by soil fungi or absorbed as plant fertilizer, and nitrogen, phosphorus, etc. are effectively removed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an underground buried purification water channel according to the present invention will be described with reference to the drawings. 1 and 2, 11 is a water pipe, 21 is a water-permeable material, and 31 is a fastening band.

The water pipe 11 is a ceramic pipe (including a biscuit pipe),
Concrete pipes (including reinforced concrete pipes), synthetic resin pipes (including FRP pipes), corrosion-resistant (rust-free) metal pipes, composite pipes of these, and the like are formed of any tubular body having a circular cross section or a polygonal cross section. The waterway pipe 11 of the illustrated example is a lower pipe wall material 1.
It is divided into two parts, 2A and an upper pipe wall member 12B, and a tubular shape is formed by combining the lower pipe wall member 12A and the upper pipe wall member 12B.

The lower pipe wall member 12A is thicker than the upper pipe wall member 12B, and the inner surface thereof forms the filter bed surface 13. As clearly shown in FIG. 3, the filter bed surface 13 has a groove 14 extending along the axial direction thereof and a groove 15 intersecting the groove 14.
In addition to this, a large number of holding holes 16 are formed in a scattered manner. Each of the contact filter materials 17 attached to the filter bed surface 13 is made of the same material as that described for the water pipe 11, and is preferably one having adsorptivity. The block portion forming the head of these filter media 17 is represented by a circle such as a true circle or an ellipse when viewed from the plane, and is represented by various triangles and various quadrilaterals (squares, rectangles, trapezoids). It may be polygonal or irregular. The size (area, height) of the head of each filter material 17 is large and small, and among these, the filter bed surface 13
The long filter material 17 that intersects with the axial direction may be curved and formed such that the lower surface of the head portion thereof is along the filter bed surface 13. Further, on the lower surface of each filter material 17, an insertion piece 18 is formed which can be fitted into and removed from the holding hole 16, the concave grooves 14 and 15, and the like.

As is obvious, the water-permeable material 21 allows water to permeate, and in most cases, causes a capillary phenomenon. The water-permeable material 21 may be soft, hard, flexible or not, but has a large number of fine and continuous pores (continuous pores or open cells) or a plurality of fine and continuous voids. Preferable examples thereof include porous ceramics, open-cell synthetic resins, layered non-woven fabrics, layered mesh materials, and the like. When the water-permeable material 21 is hard,
It is provided with a tubular shape having an inner diameter corresponding to the outer diameter of the water pipe 11, but when it is soft or flexible, it is either tubular or strip-shaped. The band-shaped water-permeable material 21 can be deformed into a tubular shape so as to be substantially the same as the tubular shape.

As shown in FIG. 2, the tightening band 31 tightens the pair of tightening pieces 32A and 32B, the hinge 33 connecting the connecting ends thereof, and the open / close ends thereof. Stoppers 34, 35 such as bolts and nuts for
Consists of. Both fastening pieces 32A, 32B of the fastening band 31
Is made of any material such as synthetic resin, rubber, and metal.
It is desirable that the fastening pieces 32A and 32B have a mesh structure. In some cases, the fastening band 31 is formed of a stretchable annular band.

In FIG. 1, when a water channel is formed in the underground (underground) G ₁ , the following is taken as an example. First, underground G dug up along the route for laying waterways
₁ , the lower pipe wall material 12A of each water pipe 11 is sequentially arranged. At this time, the lower pipe wall members 12A are separated from each other at their connecting end portions.

Next, the filter bed surface 13 of each lower tube wall material 12A
Then, the filter media 17 having various shapes are appropriately distributed and attached. Such attachment is performed by inserting the insert piece 18 of each filter material 17 into the holding hole 16, the concave grooves 14, 15 and the like of the filter bed surface 13.

Thereafter, the lower pipe wall material 12A is covered with the upper pipe wall material 12B, respectively, and a large number of water channel pipes 11 are formed.
Assemble. When these pipe wall materials 12A and 12B are united,
It is convenient that the abutting surfaces of the lower pipe wall member 12A and the upper pipe wall member 12B forming a pair are provided with an uneven portion for alignment, a step or the like. In addition, if necessary, both pipe wall materials 1
A sealing material may be applied to the abutting surfaces of 2A and 12B.

Following the above, the cut-off portion 41 between the water pipes 11 is closed by the tubular water-permeable material 21. At this time, as clearly shown in FIG. 2, the water-permeable material 21 is covered over the outer circumferences of the connecting ends of the water channel pipes 11 adjacent to each other, and the fastening band 31 is applied on the water-permeable material 21, and the fastening member 34, Tighten with 35. Alternatively, as an embodiment (not shown), a tubular water-permeable material 21 is provided inside the connecting ends of the adjacent water channel pipes 11, and the connecting ends are connected by a fastening band 31. Thus, a permeation part mainly composed of the water-permeable material 21 is formed between the connection ends of the water pipes 11.

In the above description, the fluid permeation ability of the permeating part extending inside and outside the water pipe 11 is determined by the air permeability or water permeability of the water permeable material 21, the thickness of the water permeable material 21, the spacing of the separating portions 41, and the like. Therefore, the permeation capacity of the permeation part is
The required value may be set in consideration of these conditions. Further, the water channel constituted by a large number of water channel pipes 11 may have a downward slope from the inlet side to the outlet side thereof.

In the following, the excavated portion is covered with soil. A sludge storage tank 51 is provided on the way to the water channel thus configured, and a flower bed G ₂ is provided on it.
As an alternative, the flowerbed G ₂ may be an artificial countryside for vegetating vegetables, fruits, trees, lawns, and other plants, or a natural countryside where these grow naturally.

In the underground buried purification water channel illustrated in the figure, as described above, the discharge water (sewage) to be purified is supplied to each water channel pipe 1.
Flow from the inlet side to the outlet side of the waterway according to 1. The flowing water is purified by catalytic oxidation, adsorption, aeration, precipitation, etc. that occur on the filter bed surface 13 in each water channel pipe 11 having a plurality of concave grooves 14 and 15 and a large number of filter media 17, and the treated water is treated. A part of the water permeates through the water through the capillarity of the water-permeable material 21 and permeates into the ground. Further, the organic components (nitrogen, phosphorus, etc.) of the water permeated outside the waterway are decomposed by soil fungi, or the flowerbed. Absorbed and removed by G ₂ plant roots. Note that the external permeability of the treated water is reduced when it is raining or the like, but in such a case, the sludge stagnant in the water channel pipe 11 can be poured into the sludge storage tank 51 with a large amount of water.

[0020]

The underground buried purification water channel according to the present invention has the following effects. [Effect 1] Since the long water channel has the sewage purification function, the discharged water can be sufficiently treated, which is suitable as a large-scale purification facility. [Effect 2] The discharged water is naturally treated in the process of being discharged, so it does not depend on mechanical treatment, and moreover, a part of the treated water permeates into the ground to decompose the soil and plants. ,
Since absorption power is also used, high treatment efficiency can be secured without depending on drug treatment. [Effect 3] Since the discharged water can be purified over the entire length of the water channel, the discharged water with high fluidity does not cause a treatment shortage, and a part of the treated water is permeated to the outside. By reducing the flow rate, the water flow rate in the water pipe decreases, and this matches the oxidation rate, so that the treatment efficiency of the discharged water also increases in this respect. [Effect 4] Since it is both a water channel and a purification device, it is economical in terms of equipment as compared with the case where these are separately installed, and the configuration mainly includes water channel piping and a water permeable material. You can easily create a canal as well as a sewer. [Effect 5] A part of the treated water can be externally permeated and used as fertilizer, so that the added value is high.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing an embodiment of an underground buried type purified water channel according to the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of an underground buried purification channel according to the present invention.

FIG. 3 is an enlarged plan view of a lower pipe wall material according to the present invention.

[Explanation of symbols]

 11 Waterway piping 12A Lower pipe wall material 12B Upper pipe wall material 13 Filter bed surface 14 Recessed groove 15 Recessed groove 17 Filter material 21 Water permeable material

Claims (2)

[Claims] 1. A plurality of waterway pipes having a filter bed surface inside are arranged along a route for laying a waterway, and a disconnection interval is interposed between these connection ends, and the disconnection portion is tubular. An underground buried purification channel characterized by being closed with a permeable material that forms 2. The underground buried purifying water channel according to claim 1, wherein the filter floor surface of the water channel pipe is provided with a concave groove and a removable filter medium.