JP2549327B2 - Wastewater treatment method and wastewater treatment well - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is characterized by efficiently adsorbing and removing agricultural chemicals and other harmful components contained in wastewater discharged from golf courses and discharging them as clean water. Wastewater treatment method and wastewater treatment well.

[0002]

2. Description of the Related Art In golf courses, a large amount of pesticides are used to protect lawns, trees and the like planted on fairways and greens from harmful insects. Of this, about a few percent of the sprayed amount remains in the storage tank of the maintenance yard, and it is considered that it mixes in the wastewater and flows out into the ground and into the drainage route. In addition, pesticides sprayed on the lawn permeate into the ground with rainwater due to rainfall, etc.Furthermore, pesticides adhering to the caddy, player's shoes, caddy cart, etc. are mixed in the drainage flowing from the washing place of the clubhouse. leak. Then, the above-mentioned pesticides penetrate into the ground and adversely affect agricultural products cultivated in the vicinity, or become harmful waste liquids that contaminate rivers and oceans, causing a great deal of pollution. .

[0003]

The pesticides contained in the above wastewater can be removed by adsorbing them on an adsorbent such as charcoal, but a wastewater treatment method or drainage apparatus suitable for practical use has not yet been proposed. Not not. That is, since a golf course usually has a vast area of 800,000 m2 or more, a large number of wastewater treatment devices must be installed. Therefore, the installed wastewater treatment equipment must have excellent workability and a high wastewater treatment function. The present applicants have earnestly studied a wastewater treatment method and a wastewater treatment well that efficiently use the adsorbent to be used and have excellent workability, and arrived at the present invention.

[0004]

According to the present invention, drainage discharged from a golf course, for example, is passed through a dust collecting filter and then temporarily stored inside a water-impermeable vertical pipe material to discharge the drainage. It is made to flow out from the water holes formed in the upper part of the material, and it is made to flow downward from the upper part of the adsorbent that is installed around the outer surface of the vertical pipe material, and the pesticide contained in the wastewater is adsorbed and removed by the adsorbent, and then adsorbed. The present invention relates to a first wastewater treatment method, which is characterized in that the wastewater is discharged from the lower outer surface of the body.

Further, according to the present invention, the wastewater that has passed through the dust collecting filter is supplied to the upper end surface of the adsorbent to flow down from the upper end surface, and when the upper end surface of the adsorbent is blocked, the drainage is a vertical pipe material. A second wastewater treatment method is also proposed, in which the wastewater is once stored inside, and the wastewater is made to flow out from the water hole and made to flow down from the upper part of the adsorbent.

Further, the present invention also proposes a wastewater treatment well in which the above-mentioned two wastewater treatment methods are specifically implemented. That is, as a wastewater treatment well in which the above-mentioned first treatment method is implemented, a water-impermeable base installed at the bottom of the well, and a vertical pipe material in which the lower end opening is embedded in the base and is supported upright. , A detachable adsorbent that is provided around the outer surface of the vertical pipe material, and guides a water distribution channel extending from a water collecting groove installed on a golf course above the vertical pipe material, and A dust collecting filter is arranged in the flow path, and after the wastewater passes through the dust collecting filter, it is supplied to the inside of the vertical pipe material to flow out,
It is configured such that it flows down from the upper part of the adsorbent, the harmful components contained in the waste water are adsorbed and removed by the adsorbent, and then discharged from the lower outer surface of the adsorbent.

Further, as a wastewater treatment well in which the above-mentioned second treatment method is implemented, the upper end surface of the adsorbent body is formed higher than the upper end of the vertical pipe material, and the wastewater guided to the water distribution channel is disposed on the upper end surface of the adsorbent body. A drainage mechanism for supplying the wastewater that has passed through the dust collecting filter is supplied to the upper end surface of the adsorbent and allowed to flow down from the upper end surface, and excess wastewater is temporarily stored inside the vertical pipe material. Let the drainage flow out of the water holes,
The structure is such that it flows down from the upper part of the adsorbent.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. The wastewater treatment well of the present invention shown in FIGS. 1 and 2 shows the first treatment method described above as an apparatus. The wastewater treatment well of the present invention comprises an impermeable base 1,
A vertical pipe member 2 in which a lower end opening is embedded in the base member 1 and which is supported in an upright state, and a water-permeable cylinder 3 which is arranged on the base member 1 at a constant interval from the vertical pipe member 2. Become. The base 1 described above is, for example, bottom-filling concrete having low water permeability, and the vertical pipe member 2 can be, for example, a polyvinyl chloride pipe. Further, the water-permeable cylinder 3 is
For example, a water-permeable concrete obtained by binding crushed stones having a large particle size with a small amount of a solidifying material can be used, and examples of this water-permeable concrete include "Infiltration Polarcon EW-1500" manufactured by Ozawa Concrete Industry Co., Ltd. be able to. The base 1 and the water-permeable cylinder 3 described above may be integrally fixed. In this case, as shown in the embodiment of the drawings, after filling the crushed stone a in the bottom portion excavated in a mortar shape,
The base 1 and the water-permeable cylinder 3 can be directly inserted. Further, in the embodiment shown in the drawings, a fitting step portion 4 is formed on the base 1 so that the water-permeable cylinder 3 does not move.
Further, the water-permeable cylinder 3 may have a structure in which it can be divided into two parts in the upper and lower parts.

As shown in FIG. 2, an adsorbent 5 is removably inserted into the gap between the vertical pipe member 2 and the water-permeable cylinder 3 described above. The adsorbent 5 described above is produced by filling a water-permeable storage bag such as a plastic net with an adsorbent such as charcoal or activated carbon. Then, the adsorbent 5 is formed in a vertically long shape, and a plurality of the adsorbents 5 are formed as shown in FIG.
When it is installed in a space between the water-permeable cylinder 3 and the water-permeable cylinder 3, it can be easily removed from above.

Further, at the upper end of the above-mentioned vertical pipe member 2,
Put on the dust collecting filter 6. The dust collecting filter 6 described above is used for the purpose of filtering and removing pebbles, wood chips, etc. contained in the drainage, and for example, a plastic mesh or the like can be used. In addition, this dust collecting filter is not particularly limited as long as it is provided in the middle of the flow path of the drainage, and for example, a water distribution channel extending from the water collecting groove 7 as shown in FIG. You may make it provide in the base end of 8.

Further, a plurality of water passage holes 9 are formed in the upper portion of the vertical pipe member 2. Therefore, when the water surface of the water stored inside the vertical pipe member 2 reaches the height of the water passage hole 9 described above, it flows out to the adsorbent 5. However, vertical pipe material 2
It may have a structure in which small holes are formed on almost the entire surface, or a structure in which the entire surface is permeable.

The wastewater treatment well of the present invention shown in FIGS. 1 and 2 has the above-mentioned structure, and removes agricultural chemicals which are harmful components contained in the wastewater discharged from golf courses, for example. It can be discharged as clean water. That is, the drainage discharged from the golf course flows down the water distribution channel 8 from the water collecting groove 7 provided at an appropriate place of the golf course and drops onto the dust collecting filter 6. Dust collection filter 6
The waste water filtered in (1) falls and is stored in the vertical pipe member 2. When the stored amount of the wastewater reaches the water passage hole 9, the wastewater flows out from the water passage hole 9 to the adsorbent 5. Then, the wastewater flows down in the adsorbent 5 and either the harmful components contained in the wastewater or the adsorbent 5 is discharged.
It is adsorbed and removed by the adsorbent inside. Since the wastewater flowing out from the water passage hole 9 to the adsorbent 5 has been filtered by the dust collection filter 6 in advance, small stones and wood chips contained in the wastewater will enter the adsorbent 5 and the adsorbent 5 will be removed. Does not block. The purified water thus obtained can be taken out from below the water-permeable cylinder 3. The purified water thus obtained may be allowed to flow down into the ground as it is, or an appropriate storage mechanism may be provided, and the purified water may be returned to a fairway or the like by a pump for reuse. Further, when the vertical pipe 2 is entirely water permeable, the wastewater that falls from the dust collection filter 6 flows out to the outside as it is and passes through the adsorbent 5, and the harmful components contained in the wastewater are adsorbents in the adsorbent 5. Will be adsorbed on and removed.

Therefore, in the wastewater treatment well of the present invention, since the wastewater containing harmful components flows down from the upper part of the adsorbent 5,
The adsorbent used in the adsorbent 5 can be utilized without fail. In particular, the adsorbent has a certain saturated adsorption amount for harmful components, but drainage flows down the adsorbent 5 from the top to the bottom. As a result, almost all of the adsorbent comes into contact with the wastewater, and the saturated adsorbent reaches the saturated adsorbent in order from the upper filled adsorbent, and the saturated adsorbed amount reaches the slowest in the lower adsorbent. .

The wastewater treatment well of the present invention is extremely easy to perform pretreatment and posttreatment. The pretreatment construction may be performed by laying crushed stones a on the bottom portion excavated in the shape of a mortar and connecting the water distribution channel 8 from the water collection groove 7. In the post-treatment construction, the crushed stone a is filled again on the outside of the drainage treatment well, and the slanted walls 10 and 11, the lid frame 12, and the manhole lid 13 are sequentially stacked and fixed on the upper end of the water-permeable cylinder 3, Wall 10, 11
The backfill soil b may be provided on the outer side of.

The wastewater treatment well of the present invention is extremely easy to maintain. That is, the adsorbent 5
Since the adsorbent used for the above has a constant saturated adsorption amount as described above, it is necessary to replace the adsorbent 5 at an appropriate time. Since the adsorbent 5 can be easily loaded and unloaded from above as described above, by performing an extremely simple replacement work, the harmful components in the wastewater can be efficiently removed over a long period of time. be able to.

The wastewater treatment well of the present invention shown in FIG. 3 is a device obtained by implementing the second treatment method described above. In this wastewater treatment well, the upper end surface of the adsorbent 5 is formed higher than the upper end of the vertical pipe member 2. Then, the water distribution mechanism 14 that supplies the wastewater guided to the water distribution channel 8 to the upper end surface of the adsorbent 5 is provided. The water distribution mechanism 14 is a bulk water distribution channel in the illustrated embodiment.
Further, the dust collecting filter 6 was provided at the base end of the water distribution channel 8 extending from the water collecting groove 7. Therefore, this wastewater treatment well
The wastewater filtered by the dust collecting filter is supplied to the upper end surface of the adsorbent 5 and flows down from the above-mentioned upper end surface. And
When a large amount of drainage is poured during heavy rain or the like, excess drainage flows down and is stored inside the vertical pipe member 2. In the case of such a configuration, a structure that prevents excess drainage from escaping to the outside of the adsorbent 5 is required. For example, the inclined wall 10 having low water permeability may be provided outside the upper end surface of the adsorbent 5.
Alternatively, the upper end surface of the adsorbent 5 may be inclined so that the inner side becomes lower.

In the wastewater treatment well configured as described above, since the wastewater flows down from the upper end surface of the adsorbent 5, the adsorbent 5 is more efficient than the wastewater treatment wells of FIGS. 1 and 2 described above.
Can be used. Even if the vicinity of the upper end of the adsorbent 5 is clogged, the wastewater is temporarily stored in the vertical pipe material 2 and then returned to the adsorbent 5, so that the pesticides contained in the wastewater can be prevented. It is possible to reliably adsorb and remove harmful components.

Further, according to the present invention, the water distribution mechanism 14 described above is used.
It is also possible to form a water passage in the water supply port and supply the waste water to the upper end surface of the adsorbent 5 and the inside of the vertical pipe member 2 in advance.

Although the present invention has been described above based on the embodiments of the drawings, the present invention is not limited to the above-mentioned embodiments, and may have any structure unless the structures described in the claims are changed. It may be.

[0020]

As described above, the wastewater treatment method of the present invention can efficiently adsorb and remove harmful components contained in the wastewater discharged from a golf course, and discharge it as clean water. . At that time, since the waste water flows down through the adsorbent in order from the upper side to the lower side, the adsorbent used as the adsorbent is not wasted and the harmful components can be adsorbed efficiently. Further, since the dust collecting filter filters and removes small stones and wood chips, it does not enter the adsorbent body and become blocked. Further, since the adsorbent used in the present invention can be attached and detached, maintenance becomes extremely easy.

Further, if the waste water is supplied to the upper end surface of the adsorbent, the use efficiency of the adsorbent is further increased. Furthermore, when a large amount of rainwater is supplied, such as during heavy rain,
Even if the vicinity of the upper end of the adsorbent is blocked, the wastewater is once stored in the vertical pipe material and then returned to the adsorbent,
It is possible to reliably adsorb and remove harmful components such as pesticides contained in wastewater.

Since the wastewater treatment well in which the above-described wastewater treatment method of the present invention is implemented has an extremely simple structure, it can be manufactured in a factory or installed on the site very easily.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a wastewater treatment well of the present invention.

FIG. 2 is a cross-sectional view of the wastewater treatment well of the present invention.

FIG. 3 is a longitudinal sectional view showing a main part of another embodiment of the present invention.

[Explanation of symbols]

 1 Base 2 Vertical pipe material 3 Water-permeable cylinder 4 Fitting part 5 Adsorbent 6 Dust collection filter 7 Water collection groove 8 Water distribution channel 9 Water passage hole 10 Sloping wall 11 Sloping wall 12 Lid frame 13 Manhole lid 14 Water distribution mechanism

Claims (5)

(57) [Claims] 1. After passing the wastewater through a dust collecting filter,
Once stored inside the impermeable vertical pipe material, the drainage is made to flow from the upper part of the vertical pipe material to the outside, and is made to flow downward from the upper part of the adsorbent that is provided around the outer surface of the vertical pipe material. A effluent treatment method, characterized in that a harmful component contained in is adsorbed on an adsorbent to be removed, and is discharged from a lower outer surface of the adsorbent. 2. The vertical pipe material for supplying drainage that has passed through the dust collecting filter to the upper end surface of the adsorbent to allow the inside of the adsorbent to flow down from the upper end surface and when the upper end surface of the adsorbent is blocked. The wastewater treatment method according to claim 1, wherein the wastewater is once stored inside, and the wastewater is made to flow out from the upper part of the vertical pipe material to the outside and flow down from the upper part of the adsorbent. 3. An impermeable base set at the bottom of the well,
The water collecting groove is composed of an impermeable vertical pipe material in which a lower end opening is embedded in the base and is supported upright, and a detachable adsorbent provided around the outer surface of the vertical pipe material. While guiding the water passage extending from above above the vertical pipe material, a dust collecting filter is arranged in the middle of the water flow path,
By establishing a water passage hole in the upper part of the vertical pipe material, the wastewater passes through the dust collection filter, and then is temporarily stored inside the vertical pipe material, and the wastewater flows out through the water passage hole to the adsorbent. A drainage treatment well characterized in that the harmful components contained in the wastewater are adsorbed and removed by the adsorbent and then discharged from the lower outer surface of the adsorbent. 4. An impermeable base set at the bottom of the well,
It consists of a water-permeable vertical pipe material in which the lower end opening is embedded in the base and is supported upright, and a detachable adsorbent that is provided around the outer surface of the vertical pipe material. Guide the extended water distribution path above the vertical pipe material, place a dust collection filter in the middle of the water flow path, let the wastewater pass through the dust collection filter, and then let it flow out from the vertical pipe material. A drainage treatment well characterized in that a harmful component contained in wastewater is made to flow down from the upper part of the adsorbent to be adsorbed and removed to the adsorbent and then discharged from the lower outer surface of the adsorbent. 5. The drainage filtered by a dust collecting filter, wherein the upper end surface of the adsorbent is formed higher than the upper end of the vertical pipe material, and a water distribution mechanism for supplying the wastewater guided to the water distribution channel to the upper end surface of the adsorbent is provided. Is supplied to the upper end surface of the adsorbent and made to flow down from the upper end surface, and excess wastewater is once stored inside the vertical pipe material, and the wastewater is made to flow out from the water passage hole and made to flow down from the upper part of the adsorbent. The wastewater treatment well according to claim 3, wherein the well is formed.