JP3030730B2 - Purification structure for river water, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for purifying river water or lake water.

[0002]

2. Description of the Related Art Pollution from groundwater due to domestic wastewater and pollution from factory wastewater have become problems. It has been a long time since pesticide contamination was reported. These contaminated substances flow out into rivers and lakes through the groundwater system and the ground surface, and cause environmental pollution such as eutrophication of lakes and inland seas. By the way, conventional revetments such as rivers are mainly made of concrete walls or masonry. In the case of these revetments, such contaminated groundwater from surrounding land will be treated with sewage.

[0003]

However, if there is no sewer nearby, the water flows through groundwater veins and cavities in the ground and flows into rivers and the like from places where revetments are not sufficient. In addition, it flows as surface water and causes environmental pollution.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a purification structure for river water or the like capable of purifying pollutants flowing into rivers and lakes. The purpose is to provide. That is, the present invention
A bag laid between river water or lake water and the surrounding ground, having water permeability, and having a filling channel divided by a partition, and a slurry-like coal ash filled in the bag. And a purification structure for river water and the like.

[0005]

An embodiment of the present invention will be described below with reference to the drawings. <B> Bag body The bag body 1 is a closed bag body made of a material having water permeability, for example, a woven or knitted fabric. As a specific example of the bag body 1, as shown in FIG. 2, for example, the internal space is partitioned by a partition body 11 so as to meander, and a filling channel of the coal ash 2 is formed. Further, as shown in FIG. 3, the front and back surfaces of the bag body 1 are connected by a spacer 12 to form a coal ash 2.
Is configured so that the swelling of the entire bag 1 becomes uniform when the bag is filled. However, the gap 1 is partially formed in the spacer 12.
3 is provided, and a filling flow path for the coal ash 2 is secured. Further, an injection port 14 for the coal ash 2 as shown in FIG.

<B> Coal ash The bag 1 constructed as described above is temporarily installed on the shore of a river or a lake or a water bottom, and the coal ash 2 is filled therein. Since the coal ash 2 has a large specific surface area, it has a function of adsorbing pollutants such as BOD and COD. When filling the coal ash 2 into the bag body 1, for example, water: coal ash = 1: 1 is mixed, and a slurry is filled under pressure. Then, since the inside of the bag 1 is moved in the direction of the arrow shown in FIG. 2 and gradually filled, the swelling of the entire bag 1 becomes uniform.
Since the coal ash 2 has round and fine particles, when the coal ash 2 is filled in the bag 1 and pressurized, drainage is performed well and the coal ash 2 can be packed in a dense state. After filling coal ash 2,
As shown in FIG. 1, an appropriate place is fixed by an anchor 3 or the like and stabilized. After fixing the bag 1 with the anchor 3 or the like, the coal ash 2 may be filled.

[0007]

As described above, by laying the bag 1 filled with coal ash 2 on the shore or water bottom of a river or a lake, pollutants that are going to flow into a river or a lake from a groundwater vein or the like are introduced. Can be adsorbed before. It also has the function of purifying water from rivers and lakes as well as pollutants flowing from groundwater veins and the like. In addition, since the coal ash 2 is densely packed in the bag 1, by laying it on the shore of a river or the like, it also has a function as a seawall. Furthermore, coal ash 2
Is also useful as a rooting material for seagrass and underwater plants, because it is convenient for vegetation.

[0008]

Embodiment 2 As shown in FIGS. 4 and 5, it is also possible to interpose a bag 1 filled with coal ash 2 on the back of a concrete revetment 4 or a split stone 5 or the like. In this case, an anchor for fixing the bag 1 is unnecessary.

[0009]

Since the present invention has been described above, the following effects can be obtained. <B> Since coal ash has a large specific surface area, BOD and COD
It has a function to adsorb contaminants such as. Therefore,
Pollutants that are going to flow into a river or lake from a groundwater vein or the like can be adsorbed before flowing in, so that environmental pollution can be improved. <B> It has the effect of purifying water from rivers and lakes as well as pollutants flowing from groundwater veins. Therefore, it is possible to purify pollutants flowing into a river or the like from the ground surface. <C> Since coal ash is tightly packed in the bag, it can also function as a seawall by laying it on the shore of a river or the like. <D> Coal ash is also useful as a rooting material for seagrass and underwater plants because it is convenient for vegetation.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a purification structure of the present invention.

FIG. 2 is an explanatory view of a bag body.

FIG. 3 is an explanatory view of a bag body.

FIG. 4 is an explanatory view of a second embodiment.

FIG. 5 is an explanatory diagram of a second embodiment.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-249190 (JP, A) JP-A-1-107884 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02B 7/02 C02F 1/28 E02B 3/12 E02B 8/00

Claims (1)

(57) [Claims] 1. A bag laid between river water or lake water and surrounding ground, having water permeability, and provided with a filling channel partitioned by a partition, and a bag filled with the bag. Purification structure for river water, etc., consisting of slurry-like coal ash.