JP3147892B2 - Pesticide removal equipment in golf course regulating pond - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for removing pesticides contained in water from a regulating pond in a golf course.

Background of the Invention and Prior Art In recent years, while golf courses have been established in various places with the increase in the golf population, in order to maintain and maintain lawns on golf course greens and tee grounds, or grasslands on fairways and roughs. The use of pesticides and other chemical substances has been attracting attention as a problem that causes environmental pollution in the vicinity. Particularly in recent years, new golf courses have been set up because such environmental pollution problems have not been solved. It is becoming difficult to improve the environmental pollution problem even in existing golf courses.

One reason it is difficult to solve the problem of golf nearby water system is contaminated with agricultural chemicals are that generally pesticides large area over even hundreds of thousands m ² or more is sprayed in golf courses, Surface water or infiltration water that penetrates into the ground contained in rainwater, etc., diffuses and merges through complex routes according to the topography and ground structure that differs for each golf course, and dilutes regulating pond or groundwater. This is because it flows into the system.

Therefore, a treatment method (for example, JP-A-55-142588) in which water containing a pesticide discharged from a factory or the like is coagulated by adding a polymer coagulant or the like to coagulate the pesticide and then separated by filtration is described above. It cannot be applied to the technology for removing pesticides contained in water flowing out of a golf course, and no comprehensive and effective method for solving environmental pollution near the golf course has been proposed.

(Problems to be Solved by the Invention) Under such circumstances, the present inventors have not proposed an effective technique for actively removing pesticides sprayed on a golf course as described above. Actively addressing the technical challenges of socially significant significance in preventing environmental pollution, some of which can effectively remove pesticides from water flowing out of golf courses and are practically applicable Has already developed and applied for a patent.

The present invention has been developed to more thoroughly realize the problem of pesticide purification in a golf course.

In other words, in golf courses, apart from the problem of environmental pollution in the vicinity due to pesticides, it is generally required to provide a regulating pond in the golf course from the viewpoint of securing water management and water retention capacity of the entire area. It is very likely that the water in the reservoir will contain pesticides sprayed in the golf course. Therefore, an object of the present invention is to purify agricultural chemicals contained in water by utilizing the structure of a regulating pond while utilizing its structure conveniently.

By the way, some practical problems have to be solved when actually trying to remove the chemical substances contained in the diluted water in the stored water. For example, it is difficult to install large-scale wastewater treatment facilities that require a large installation area around the regulating pond, and since the regulating pond is a man-made structure, various things flow into it. Care must be taken to ensure that the inflow does not interfere.

In addition, the regulating pond temporarily stores rainwater collected from the entire golf course and has an orifice in the dam to reduce the amount of water discharged to a predetermined amount or less. Must also be able to respond.

An object of the present invention is to provide a technique capable of easily and efficiently removing pesticides from water storage while considering various problems in the regulating pond of a golf course as described above.

(Means and Actions for Solving the Problems) The feature of the pesticide removal device in the golf course regulating pond of the present invention that achieves the above-mentioned object is an apparatus for removing pesticides contained in water stored in a golf course regulating pond. An adsorbent filling tank having an upper horizontal sectional area larger than the lower part and filled with a granular adsorbent therein is installed in a regulating pond. The adsorbent filling tank removes water in the regulating pond from the tank. And an upper drainage portion that guides water flowing upward in the tank to a water discharge orifice provided in the dam of the regulating pond.

In the above configuration, it is preferable that the adsorbent filling tank is provided with a water collecting trough crossing the water surface at the upper part of the tank, and the water collected in the water collecting trough is guided to the water discharge orifice of the dam. Thereby, the flow velocity of the water flowing in the tank in the upward flow is averaged, and the utilization efficiency of the adsorbent is improved.

Further, it is desirable that the adsorbent filling tank is set to have a horizontal cross-sectional area at an upper portion thereof which satisfies a condition that the filled adsorbent does not overflow from the upper part of the tank due to an upward flow flowing in the tank. This prevents the particulate adsorbent from flowing out of the tank.

Furthermore, the adsorbent filling tank is particularly preferably provided in an inverted cone shape (an inverted cone shape, an inverted pyramid shape). By adopting such a configuration, the adsorbent naturally sediments normally and settles at the lower part of the tank, and substantially functions as a fixed-bed type adsorption tower with high adsorption efficiency, and water storage during concentrated rainfall or the like is performed. When the amount is increased, the flow velocity of the water flowing upward in the tank increases, and the adsorbent floats, substantially functioning as a so-called fluidized bed type adsorption tower, and a relatively specific gravity accumulated between the adsorbents Light foreign matter has the advantage that it can be discharged together with water out of the tank in an upward flow.

The adsorbent used in the present invention is not particularly limited as long as it satisfies the above conditions, but is preferably a granular adsorbent having a size of about 1 to 20 mesh, and more preferably about 3 to 8 mesh. For example, Olpearl W: (registered trademark) manufactured by Organo Corporation is used.

(Examples) Hereinafter, the present invention will be described based on examples shown in the drawings.

In the figure, reference numeral 1 denotes a regulating pond of a golf course, which is usually formed by providing a dam 2 in a valley using natural topography for each area divided according to the watershed of the golf course. The dam 2 has an opening for water discharge, which is called an orifice 3. The orifice 3 may be provided only once at a predetermined position of the dam 2, or may be provided with another orifice (upper orifice) 16 corresponding to the maximum rainfall at an upper portion.

The water in the regulating pond 1 formed in the form blocked by the dam 2 can store the amount of water up to the position of the orifice 3, and the water beyond the amount is discharged from the orifice 3 to the outside in the form of overflow. .

In the regulating pond as described above, the adsorbent filling tank 10 is installed inside the bank 2.

The adsorbent filling tank 10 of the present example includes an inverted pyramid prism-shaped open-top tank body 11, an intake pipe 12 provided by being raised from the lower part in an L shape, and an intake pipe 12. A net basket 13 which covers the upper opening of 12 to prevent foreign matters such as fallen leaves and driftwood from entering the tank, and a water collecting means provided at the upper part of the tank body 11 so as to match the height and level of the orifice 3 The orifice 3 is provided so as to prevent water from flowing from other than the tank. The tank is filled with a predetermined amount of granular adsorbent 15 such as granular activated carbon in consideration of adsorption capacity, active life and the like.

In order to ensure that the water always passes through the inside of the tank and is discharged to the outside even when the water is increased, the wall surface of the tank body 11 should be erected to a position sufficiently higher than the orifice 3 (for example, near the upper orifice). desirable. In this way, when the water is increased due to abnormal heavy rainfall, etc., the water is discharged directly from the upper orifice over the wall of the tank, so that it is safe in terms of the function of the regulating pond. Since the pesticide is remarkably diluted, there is no problem even if the water is discharged without being treated with the particulate adsorbent.

In the adsorbent filling tank 10 having the above-described configuration, a bracket (not shown) is planted on the bank 2 and fastened with bolts or the like to support the bracket, and a supporting tower is assembled at the bottom of the regulating pond. Thereby, it can be supported.

According to the adsorbent filling tank 10 having the above-described structure, the stored water naturally enters the tank from the intake pipe 12 as the water increases, flows into the water collecting trough 14 as the water level rises, and flows from the orifice 3 to the outside of the dam 2. The water is discharged.

And at this time, if the increase in water volume is slow,
Since the flow velocity of the water flowing from the intake pipe 12 into the tank is slow, the particulate adsorbent 15 is deposited at the lower part of the tank body 11 in a state of spontaneous sedimentation due to its own weight, and becomes a so-called fixed bed type adsorbent layer, and has excellent adsorption It works.

On the other hand, when the amount of water increases sharply, the flow velocity of the water flowing in the tank increases, which causes the particulate adsorbent 15 to float. Therefore, even if foreign matter is clogged between the adsorbents 15, the foreign matter floats together with the adsorbent at the time of floating, and there is an advantage that so-called clogging is eliminated.

The size of the adsorbent filling tank 10 of the present invention is, for example, when the amount of water discharged from the orifice 3 is up to 6000 m ³ / H, the upper part is approximately
8m × 8m, lower about 1.4 m × 1.4 m, a pyramid height of about 4.5 m, which was filled with 62m ³ as particulate adsorbent may be mentioned as an example.

Note that the present invention is not limited to the above-described embodiments, and it is obvious that appropriate accessories may be provided according to the topography of the installation place, the amount of stored water, and the like in actual application. For example, in a regulating pond where the number of leaves is particularly large, a porous separator may be provided at the bottom of the tank body in addition to providing the above-described net basket outside the intake pipe. Further, the top surface of the tank body may be covered with a lid without opening the top surface, or the orifice may be covered with the lid of the tank body together with the top surface of the tank body.

(Effects of the Invention) As described above, according to the apparatus of the present invention, there is an effect that pesticides can be easily and efficiently removed from water stored in a golf course adjustment pond.

Further, the device of the present invention has an advantage that the adsorbent does not float and cause clogging at the time of increasing water because the water flows through the particulate adsorbent in an upward flow. It does not need to be considered, so there is no effect on the function of the reservoir.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of a configuration outline of an apparatus for removing pesticides in a golf course regulating pond according to the present invention.
The figure is a perspective view of the removal device as viewed partially from above and inside the dam, and FIG. 3 is a bird's-eye view of the regulating pond. 1 ... regulating pond, 2 ... bank 3 ... orifice, 10 ... adsorbent filling tank 11 ... tank body, 12 ... intake pipe 13 ... net basket, 14 ... trough for collecting water

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-267191 (JP, A) JP-A-4-22086 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) C02F 1/28

Claims (5)

(57) [Claims] An apparatus for removing pesticides contained in water stored in a golf course regulating pond, wherein the tank has a horizontal cross-sectional area larger than a lower part thereof and has a granular adsorbent filled therein. Is installed in a regulating pond, and the adsorbent filling tank is provided at a lower intake section for taking in water in the regulating pond into the tank and water flowing upward in the tank in a dam of the regulating pond. An apparatus for removing pesticides in a golf course regulating pond, comprising an upper drainage portion leading to a water discharge orifice. 2. A structure in which a water collecting trough is provided horizontally above the tank in the adsorbent filling tank, and water collected in the water collecting trough is guided to a water discharge orifice of a dam. Item 2. An apparatus for removing pesticides from a golf course adjustment pond according to Item 1. 3. An upper horizontal sectional area of the adsorbent filling tank is set to a size satisfying a condition that the filled adsorbent does not overflow from the upper part of the tank due to an upward flow flowing in the tank. The apparatus for removing pesticides in a golf course adjustment pond according to claim 1 or 2, wherein: 4. The apparatus for removing pesticides in a golf course regulating pond according to claim 1, wherein the adsorbent filling tank has an inverted conical shape. 5. The apparatus according to claim 1, wherein the adsorbent is a carbon-based adsorbent having 1 to 20 mesh.