JPH072074Y2 - Sandbag for soil surface running water filtration - Google Patents

Description

[Detailed description of the device]

[Industrial field of application] The present invention is applied to golf courses, etc.
The present invention relates to sandbags that are piled up around drainage holes that discharge running water such as rainwater flowing on the soil surface to remove harmful chemical substances such as pesticides contained in rainwater and the like.

2. Description of the Related Art In recent years, the development of golf courses has progressed, and the number of newly opened golf courses is increasing. In many golf courses, pesticides such as herbicides, fungicides, and insecticides are sprayed on the golf course to control the lawn. There is a problem as a cause of water pollution. For drainage treatment of soil surface running water such as rainwater at golf courses, it is considered to collect the water at drainage holes and then treat it with drainage treatment equipment, and various types of wastewater treatment equipment have been devised. ing. For the wastewater treatment of agricultural chemicals, the removal by filtration is the simplest method, but in many cases, the wastewater treatment equipment often incorporates a filter tank using activated carbon or the like. However, in the conventional wastewater treatment facility, not only the cost for capital investment is high, but also the running cost is high, and it is difficult to spread it. As a device for easily treating sewage, there is a device in which a net bag containing a filter agent using activated carbon or the like is installed in the outlet pipe of a water collecting basin of a domestic or factory drainage channel (Actual Kaihei 1-288890). However, this is to be fitted into the drain pipe of the drainage box, and the absolute amount of harmful chemical substances such as pesticides that can be absorbed is limited. In order to adsorb and remove a large amount of pesticide contained in running water on the soil surface, the mesh bag must be replaced frequently, and the replacement is also done by removing the used drain pipe from the drainage box where water has accumulated. Since it has to be fitted into a drainage box filled with water, it is not only very complicated, but also there is a safety problem because it is necessary to put hands in contaminated water such as pesticides.

DISCLOSURE OF THE INVENTION The present invention is to remove toxic chemical substances such as pesticides easily and at low cost by filtering running water on the soil surface such as rainwater at a golf course, and it is complicated as in the above-mentioned filtration device. The purpose is to provide materials that do not have a safety or safety problem.

[Means for Solving the Problems] As a result of earnest research to solve the above problems, the present inventor prepared a plurality of mesh bags filled with an adsorbent and made into sandbags, and provided them with rainwater or the like. The inventors have found that the pesticides that have flowed out of the soil due to rainwater can be easily and efficiently removed by simply stacking them in a dike shape around the drainage holes that discharge running water on the soil surface, and completed the present invention. According to the present invention, the first filled with the adsorbent 1
And a second net bag 3 for covering the net bag 2. The net bags 2 and 3 are at least two chambers formed by at least one suture portion 6 extending from the opening 4 to the bottom portion 5. There is provided an adsorbent filling chamber, and the openings of the mesh bags 2 and 3 are sealed by a sealing means 7 to provide a sandbag for soil surface running water filtration.
The present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the adsorbent 1 is filled in the first mesh bag 2,
The mesh bag 2 is covered with the third mesh bag 3, and the mesh bag has a double structure. This double-structured mesh bag is filled with two adsorbents, which are composed of the first mesh bag 2 and the second mesh bag 3 which constitute the mesh bag, and which are formed by the suture portion 6 formed from the opening 4 to the bottom portion 5. Have a room. The sewn portion 6 is effective in preventing the adsorbent filled in the mesh bag having a certain width from being offset, as will be described later. Therefore,
The sewn portion 6 may be provided in one place as shown in FIG. 1, but may be provided in two or more places depending on the width of the mesh bag to form three or more adsorbent filling chambers. The type of adsorbent that can be used is not particularly limited as long as it can adsorb harmful chemical substances such as pesticides, but activated carbon such as coconut shell activated carbon, porous ceramic soil improver such as hard zeolite as an effective adsorbent. Can be used.
However, an adsorbent that is light and easily broken, such as charcoal, is not preferable. The size of the adsorbent is not particularly limited, but from the viewpoint of increasing the effective surface area necessary for adsorption and not passing through the mesh bag, those that pass through the 5 mm mesh sieve, preferably pass through the 2 mm mesh sieve. Those are preferable. The size of the first net bag is not particularly limited, but when the sandbags are stacked around the drainage hole as shown in FIGS. 3 and 4, the running water becomes higher than the sandbags. However, since it is possible to filter rainwater (overflow) that flows over the sandbags and flows into the drain hole if it has a certain width, it is preferable that the opening 4 and the bottom 5 have a certain width. It is good, but if it is too long, it is inconvenient to carry it, so about 30-60 cm is usually suitable.
On the other hand, the length of the mesh bags 2 and 3 is also not particularly limited, but if it is too short, the number of things to be piled around the drainage hole increases, so it takes a lot of time to load and carry it, and if it is too long, the weight becomes large. Not only is it inconvenient to transport, but it is also inconvenient for the storage place when not in use, so it is usually 60 to 1
Around 00 cm is appropriate. The size of the mesh of the first mesh bag 2 is a size for holding the above-mentioned adsorbent filled,
In addition, it needs to be large enough for the running water to pass through the mesh bag. Usually, a mesh bag having a mesh size of 0.2 mm or more and less than 2 mm, preferably 0.2 mm or more and 1 mm or less can be used as the first mesh bag 2. The mesh size of the second mesh bag 3 is not particularly limited as long as it is larger than the mesh size of the first mesh bag. Usually, a mesh having a mesh size of about 0.5 mm to 3 mm can be used. The materials of the first and second net bags 2 and 3 are not particularly limited, but those made of resin such as nylon are preferable in terms of strength and durability. The openings of the first net bag filled with the adsorbent and the second net bag covering the first net bag may be sealed by a sealing means such as suture, but the used adsorbent having a reduced adsorptive capacity. For easy replacement, the openings of the first and second net bags 2 and 3 are preferably sealed by a sealing means 7 which can be opened as shown in FIG. The openable sealing means may be a string as shown in FIG. 2 or a metal or resin fastening metal fitting, and is not particularly limited.

The function of the sandbag for flowing water filtration of the soil of the present invention is as follows. As shown in FIG. 3, a plurality of sandbags 8 of the present invention are prepared and used in such a number as to surround a drainage hole 9 provided in a golf course or the like so as to block running water. The sandbag of the present invention may be placed in one layer,
As shown in FIG. 4, it can also be used by stacking it in several layers according to the amount of flowing water.

[Example] Width 40 cm, length 80 c of opening and bottom
m, the first mesh bag made of nylon with a mesh size of about 0.2-1 mm and the second mesh bag made of nylon of the same size and a mesh size of about 1.2 mm. Then, the line connecting the center of the opening and the center of the bottom is sewn together, and each chamber of the double mesh bag having two chambers is filled with coconut husk activated carbon passing through a 2 mm mesh sieve, and the opening is stringed. The sandbag of the present invention was made by tying it up. 2 to 4 layers of the sandbags of the present invention were made around the drain hole (diameter 30 to 60 cm) of the golf course where the same sandbags were made multiple times and the pesticide (Grancer wettable powder) began to spray immediately after spraying. Stacked up to become. The drainage that passed through this sandbag and entered the drainage hole was collected downstream of the drainage hole, and the content of pesticides was measured. There wasn't. On the other hand, 0.5 ppm of pesticide was detected in the drainage of the drainage hole of the present invention which does not use sandbags.

[Effects of the Invention] Since the sandbag for soil surface running water filtration of the present invention is easy to transport and install, it can be quickly and easily installed around a drainage hole at a required time and when spraying an agricultural chemical. It is possible to effectively prevent the pesticide from flowing into the river due to the rainwater immediately after. Further, even if the size of the drainage hole is changed, it can be dealt with by simply changing the number of sandbags of the present invention to be used, so it is economical to prepare a sandbag of substantially one size.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of a sandbag for soil surface running water filtration of the present invention, which is in a state after being filled with an adsorbent and before being sealed.

FIG. 2 is a perspective view showing a state in which the sandbag for flowing water filtration on the soil surface of the present invention is sealed after being filled with an adsorbent.

FIG. 3 is a plan view showing a state in which sandbags for flowing soil water filtration according to the present invention are stacked around drainage holes.

FIG. 4 is a perspective view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adsorbent 2 1st net bag 3 2nd net bag 4 Opening part 5 Bottom part 6 Stitching part 7 Sealing means 8 Sandbag for soil surface running water filtration 9 of this invention 9 Drainage hole

Claims (3)

[Scope of utility model registration request] 1. A first net bag (2) filled with an adsorbent (1) and a second net bag (3) covering the first net bag (3),
The mesh bags (2) and (3) are composed of at least two adsorbent-filled chambers formed by at least one stitching portion (6) extending from the opening (4) to the bottom portion (5). And the openings of the net bags (2) and (3) are sealed by a sealing means (7). 2. The sandbag for soil surface running water filtration according to claim 1, wherein the sealing means is an openable sealing means. 3. The sandbag for soil surface running water filtration according to claim 1, wherein the adsorbent is activated carbon or porous ceramics.