JP3035758B2 - Water purification equipment at the intake of a concrete dam - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification device for a water intake of a concrete dam for purifying water by filtering turbid water, sewage and the like flowing into a water source reservoir, an intake facility of a water source mountain stream, and the like.

[0002]

2. Description of the Related Art Conventionally, in upstream rivers, there has been proposed a dam for removing muddy water by passing muddy water contaminated with earth and sand through a bag filled with gravel and sand. As prior art documents, there are Japanese Patent Application Laid-Open No. 3-72106, "Method of Clearing One Side of River", and Japanese Patent Application Laid-Open No. 3-33313, "Filtering method for soil particles contained in river water".

[0003] However, recently, in the upstream of rivers, particularly in mountain streams, camps in summer, etc., cause domestic wastewater to flow, causing pollution. The problem is significant when a water source reservoir or intake facility is provided downstream of the reservoir.

As described above, in the upstream river, a method for removing turbidity due to mud or the like has been proposed, but there is no effective technique for purifying so-called domestic wastewater. This is because the upstream of the river has a steep flow of water, and stones and earth and sand are carried further from the upstream, so the purification equipment is buried,
This makes purification impossible.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a water purification system that purifies turbid water and sewage flowing into a water source reservoir, a water source mountain water intake facility, etc. at an inlet of a concrete dam provided upstream thereof. It is intended to provide a device.

[0006]

According to the present invention, there is provided a water purifying apparatus for a concrete dam intake, which surrounds an upstream concrete dam intake and allows water to pass therethrough but not stones. A water-permeable cylinder constituted by a side plate made of a perforated plate or a reinforcing net or a louver casing and a top plate and a bottom plate are arranged and fixed, and at least the inner surface of the water-permeable cylinder stores activated carbon or charcoal, A large number of stones are arranged around the outer periphery of the water-permeable cylinder.

[0007] the side plates of the casing of the perforated plate is made of a corrugated plate, the upward inclined surface of said corrugated plate, those bored a number of drainage holes is suitable.

[0008]

According to the water purification apparatus for the intake of a concrete dam of the present invention constructed as described above, the water flowing to the upstream side of the concrete dam is made of stone arranged around the outside of the water-permeable cylinder. The soil penetrates inside, and the earth and sand and mud are hardly penetrated by the stones. Even if some of the stones enter the stone, they are clogged halfway and do not reach the permeable cylinder. Then, the water that has penetrated into the stone reaches the water-permeable cylinder and flows into the water-permeable cylinder through a perforated plate or a side plate of a reinforcing mesh or louver casing. The water that has flowed into the water-permeable cylinder penetrates at least the activated carbon or charcoal stored on the inner surface of the water-permeable cylinder, and the organic components contained in the water are adsorbed by the activated carbon or charcoal. The water purified by removing organic components is
It flows out of the permeable cylinder downstream through the intake of the concrete dam. Activated carbon or charcoal in the water-permeable cylinder is not buried with earth and sand, so it can be used effectively, and stones arranged around the outside of the water-permeable cylinder can permeate river water. It is possible to prevent the river water from flowing out from the drain at the top of the concrete dam. Therefore,
Can purify muddy water and sewage from upstream rivers for a long time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the water purification apparatus for a concrete dam intake according to the present invention will be described. The intake 2 is provided upstream of the intake 2 formed in the concrete dam 1 shown in FIGS. , The segments 4 obtained by bending the corrugated plate 3 having the wavy lines in the vertical direction into an arc shape in the left and right direction are connected in the left and right direction and the up and down direction to form an arch shape, and the angle members 5 are attached to the periphery. A side plate 6 is disposed, and a large number of circular drain holes 8 are formed in a staggered arrangement on the entire side plate 6 on the upwardly inclined surface 7 of the corrugated plate 3 of the side plate 6. A top plate 1 having an angle frame 10 attached around a 1/4 circular flat plate 9 at the upper end and the lower end of the arched side plate 6, respectively.
1. The bottom plate 12 is abutted two by two to form a water-permeable semi-cylindrical body 13. An expanded metal 14 is provided on the inner peripheral side of the arched side plate 6 of the water-permeable half-cylindrical body 13 as shown in FIG. An inner plate 16 which is formed in an arch shape and around which an angle member 15 is mounted is concentrically arranged and fixed at a certain interval, and activated carbon 17 is provided in a space between the inner plate 16 and the side plate 6. It is stored. A number of stones 18 are arranged around the outer periphery of the permeable semicylindrical body 13 so as to cover the permeable semicylindrical body 13. The arched side plate 6 is made of a reinforcing mesh.
May be configured.

[0010] According to water purification device 19 having such a configuration, water that has flowed into the upstream side of the concrete dam 1 is to penetrate into the stone 18 which is disposed around the outside of the water-permeable semi-cylindrical body 13, The earth and sand and the mud are hardly penetrated by the stone 18, and even when the stone 18 partially enters the stone 18, it is clogged on the way and does not reach the permeable semi-cylindrical body 13. The water that has penetrated into the stone 18 reaches the permeable semi-cylindrical body 13 and flows into the permeable semi-cylindrical body 13 through the drain hole 8 of the arched side plate 6 made of the corrugated plate 3. The water that has flowed into the water-permeable semi-cylindrical body 13 is concentric with the arch-shaped side plate 6 of the water-permeable semi-cylindrical body 13 at a fixed interval on the inner peripheral side thereof. Activated carbon 1 stored in the space with 16
7 and the organic components contained in the water are adsorbed on the activated carbon 17. The water thus purified from which the organic components have been removed flows out from the water-permeable semi-cylindrical body 13 through the water intake 2 of the concrete dam 1 and downstream.

[0011] Next will be described another embodiment of the in water purification device in the concrete dam intake of the present invention, the upstream side of the intake port 2 formed in the concrete dam 1 as shown in FIG. 3, said mounting water from the upstream surrounds the mouth 2 comprises a casing 24, as the lower end of the upwardly number of the inclined plate and the upper 23 parallel inclined plate 23 toward the downstream becomes the top and flush with the lower side of the inclined plate 23, the inclination Drain opening 25 between plates 23
(See FIG. 4) are formed upward from upstream to downstream to form a louver, and segments 26 obtained by bending the entire louver in an arc shape in the left-right direction are connected in the left-right direction and the up-down direction to form an arch. A top plate 1 in which an angle frame 10 is attached around a 1/4 circular flat plate 9 at the upper end and lower end of the arched side plate 27, respectively.
1. The bottom plate 12 is abutted two by two to form a water-permeable semi-cylindrical body 13 '. In this water-permeable semi-cylindrical body 13', expanded metal 2 is inserted into the inlet of the water intake 2 as shown in FIG.
8 and a charcoal 29 is stored. A number of stones 18 are arranged around the outer periphery of the permeable semi-cylindrical body 13 'and cover the permeable semi-cylindrical body 13'.

The water purification apparatus 19 'constructed as described above.
According to this, the water flowing to the upstream side of the concrete dam 1 is separated by a stone 18 disposed around the outside of the permeable semi-cylindrical body 13 '.
The earth and sand and mud are hardly penetrated by the stone 18 because they are blocked by the stone 18, and even when the stone 18 partially enters the stone 18, it is clogged on the way and does not reach the permeable semi-cylindrical body 13 ′. The water penetrating into the stone 18 reaches the permeable semi-cylindrical body 13 ', passes through the drain opening 25 between the inclined plates 23 of the arch-shaped side plate 27 made of louvers, and forms the permeable semi-cylindrical body 13'. Inflow inside. The water flowing into the water-permeable semi-cylindrical body 13 ′
The organic component contained in the water is adsorbed on the charcoal 29 while passing through the charcoal 29 stored in the water-permeable semi-cylindrical body 13 ′. The water thus purified from which the organic components have been removed is supplied from the water-permeable semi-cylindrical body 13 ′ to the intake port 2 of the concrete dam 1.
And flows downstream through.

[0013] The water purification apparatus 1 of the above two embodiments.
9 and 19 ′ constitute the water-permeable semi-cylindrical bodies 13 and 13 ′ by assembling the top plate 11 and the bottom plate 12 with the arch-shaped side plates 6 and 27, but the side plates 6 and 27 are limited to the arch type. Instead, any shape may be used as long as the intake 2 can be surrounded on the upstream side of the concrete dam 1. Further, the water-permeable semi-cylindrical body 1 of the water purification devices 19, 19 'of the above two embodiments.
The top plate 11 and the bottom plate 12 of the plates 3 and 13 'are flat plates, but may be a combination of a slit plate, a perforated plate, expanded metal or the like and a wire mesh. In short, any material can be used as long as only water can flow into the permeable cylinder. Further, the water-permeable semi-cylindrical bodies 13, 1 of the water purification devices 19, 19 'of the above two embodiments.
An arched inner plate 16 made of expanded metal in 3 'and an expanded metal 28 at the inlet of the intake 2
May be replaced with a water-permeable cloth, for example, a geotextile.

[0014]

As described above, according to the water purification apparatus for the intake of a concrete dam according to the present invention, the water flowing upstream of the concrete dam penetrates into the stones arranged around the outside of the water-permeable cylinder. And reached the water-permeable cylinder, the earth and sand and mud were blocked by the stones, clogged in the middle even if it partially entered the stone, did not reach the water-permeable cylinder, but reached the water-permeable cylinder Water flows into the inside through a perforated plate or a side plate of a reinforced mesh or a louver casing, and permeates at least the activated carbon or charcoal stored on the inner surface, and organic components contained in the water are converted into activated carbon or charcoal. As a result of the adsorption, the water flowing downstream from the water-permeable cylinder through the intake port of the concrete dam is purified without organic components. In addition, the activated carbon or charcoal in the permeable cylinder is not buried in earth and sand or mud, so it can be used effectively, and furthermore, a large number of stones arranged around the outside of the permeable cylinder penetrate the water of the river. Without draining the river water from the drain at the top of the concrete dam, thus purifying the turbid water and sewage of the upstream river for a long period of time. Can take in stream water with purified water quality.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a water quality purifying device at a water intake of a concrete dam according to the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a perspective view showing another embodiment of the water purification device at the intake of the concrete dam according to the present invention.

FIG. 4 is a longitudinal sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete dam 2 Intake port 3 Corrugated board 4 Segment 5 Angle material 6 Side plate 7 Inclined surface 8 Drain hole 9 Flat plate 10 Angle frame 11 Top plate 12 Bottom plate 13, 13 'Permeable semi-cylindrical body 14 Expanded metal 15 Angle material 16 Inside Plate 17 Activated carbon 18 Stone 19, 19 'Water purification device 23 Inclined plate 24 Casing 25 Drain opening 26 Segment 27 Side plate 28 Expanded metal 29 Charcoal

Claims (2)

(57) [Claims] 1. A water-permeable cylinder formed by a side plate made of a perforated plate or a reinforced mesh or a louver casing, a top plate and a bottom plate, which surrounds an intake port of a concrete dam on the upstream side and through which water does not pass. A concrete dam intake characterized in that a body is arranged and fixed, activated carbon or charcoal is stored on at least the inner surface of the permeable cylinder, and a large number of stones are arranged around the outside of the permeable cylinder. Water purification equipment. 2. The casing according to claim 1, wherein the casing side plate of the perforated plate is formed of a corrugated plate , and a large number of drain holes are formed in an upwardly inclined surface of the corrugated plate . Water purification system at the intake of concretecrete dam.