JP2883771B2 - Purification equipment for lakes and marshes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for purifying artificial lakes, artificial ponds, aquariums such as lakes and ponds or dams and reservoirs, and also rivers (hereinafter referred to as lakes and marshes). The present invention relates to a purification device for stirring and circulating and purifying the stirred water so as to pass through a filtration tank.

[0002]

2. Description of the Related Art Generally, as an apparatus for purifying lakes and marshes, for example, as shown in Japanese Patent Laid-Open No. 4-18993, an aerator equipped with a float is floated on the water surface, and a submersible motor is mounted at the center of a mount of the aerator. A water flow generator with a blade attached to the rotating shaft is provided, and this water flow generator generates an upward water flow,
This water stream is squirted into the atmosphere, mixed with the air in the atmosphere, dropped, and aerated in the water. At the same time, a plurality of units (two or four in this embodiment) other than the water flow generator are mounted on the frame of the aeration device.
Are provided, and the water flow generators generate water flow in the horizontal direction to stir the whole of a wide and complex lake or marsh.

[0003] Further, as another purifying apparatus, for example, as shown in Japanese Utility Model Application Laid-Open No. 3-79897, a filtration tank containing a purification material between inner and outer peripheral walls formed of a mesh on a bottom plate, The purification device main body having the central space formed in the peripheral wall is floated on the water surface by providing a float on the upper outer periphery of the main body. A submersible pump is provided in the central space. Water around the purifier main body is purified from the outer peripheral wall of the filtration tank through the inside of the filtration tank, passes through the inner peripheral wall, and flows into the central space. The water in the central space is drained to the surface of a lake or the like via a drain pipe provided above the submersible pump.

[0004]

In the former conventional purification device, a water flow generator for generating an upward water flow is for aeration, and a plurality of water flow generators for generating a horizontal water flow are provided in lakes and marshes. Are agitated, and have different functions, so that they must be provided separately, and there is a problem that the production cost is expensive. Moreover, since the water flow generator for direct purification is only the water flow generator for aeration at the center of the purification device, the purification is performed despite the high production cost using several water flow generators. There was a problem that the efficiency was not good.

Further, in the embodiment of the purifying apparatus disclosed in Japanese Patent Application Laid-Open No. 3-193195, when there are two water flow generators that generate a water flow in the horizontal direction, the agitation in the lakes and marshes is in two directions, which is not sufficient. However, for this purpose, four water flow generators are provided, and the larger the number, the higher the production cost.

In the latter conventional purification device,
There is a problem that only water flowing around the purifier is purified, and water far away from the purifier is hardly purified. Therefore, it is not enough to solve the problem of poor circulation of water in lakes and marshes, which cause pollutants and suspended matter in the water to deposit on the bottoms of lakes and marshes, resulting in eutrophication and killing of fish and microorganisms in the water. It was difficult.

The present invention has been developed in order to solve the above-mentioned problems, and an object of the present invention is to provide an inexpensive purification device having high purification efficiency of water such as lakes and marshes.

[0008]

To achieve the above object, according to the solution to ## in purifying device 10 lake or the like of the present invention is to butt with a gap 17 of Filtration tank 11 into a plurality pieces each other physician, said filtration
A float 16 is provided in the tank 11 and at least the gap 17
Also forms a horizontal flow path 18 partially submerged in water .
Further, the drainage hole 15 is formed in the filtration tank 11 facing the flow path 18.
When the the water intake 14 and <br/> formed submerged in the water to the bottom of the filtration tank 11, the flow path 18, horizontal direction the water in the flow channel 18
A submersible pump 21 serving as a water flow generating means for discharging water into the water is provided.

For example, in FIG.
There forms a hexagon, three of the filtration tank 11, two adjacent sides A, with a gap to each other B is butt flow path 1 at the gap
8, 18 and 18, and the flow paths 18, 1
Drainage holes 15, 15, 15 can be formed at two corners adjacent to the filtration tank 11 facing 8, 18.

In this case, a water absorption hole 14 may be formed by providing a parallelogram net 141 including two sides E and D opposite to the adjacent two sides A and B on the bottom surface of the filtration tank 11. it can.

Further, in FIG. 6 as another example, the filter tank 41 is a circular, the filter tank 41 to three, Tsukiawashi each other via the gap in a substantially triangular shape, the flow channel 4 in the gap
8 , 48 , 48, and the flow paths 48, 4
Drainage holes 45 may be formed in each arc G of the abutting filtration tank 41 facing 8 , 48.

In this case, an arc H of an arbitrary length of each of the filtration tanks 41 , 41 , 41 opposing the arc of each of the filtration tanks 41 , 41 , 41 abutting on the bottom surface of the filtration tanks 41 , 41 , 41.
A mesh body 44 formed of a circular arc J of an arbitrary length and a circular arc J bulging from both ends X and Y of the circular arc of the filtration tank 41 toward the center of the circle.
1 may be provided to form the water absorption hole 44 .

Further, as another example, in FIG. 7, the filtration tank 61 forms a triangle, and a plurality of the filtration tanks 61, and in FIG. and butt with a gap to form a polygon in the whole of the purifying device 60 to each other, to form a six flow paths 68 in the respective gaps, two adjacent sides corner of the filter tank 61 facing the flow path 68 A drain hole 65 may be formed at the corner.

In this case, a water-absorbing hole 64 is formed by providing a triangular net-like body 641 whose base is an arbitrary length at the center of the other side M of the adjacent two sides K and L on the bottom of the filtration tank 61. You can also.

The floats 16 , 46, 66 may be provided with a solar panel 26 for driving the water flow generating means.

Furthermore, a submersible pump 2 as the water flow generating means
1 may be a DC type submersible pump or an AC three-phase type propeller pump.

Further, the above-mentioned purifiers 10 and 4 for lakes and marshes, etc.
An aquatic plant 31 can be planted in each of the filtration tanks 11 , 41, 61 of 0 , 60 .

Further, the above-described purification device 10 for lakes and marshes ,
Cultivated soil 28 can be laid in each of the filtration tanks 11 , 41, 61 of 40 and 60 , and plants 29 can be planted in the cultivated soil.

[0019]

When the submersible pump 21 serving as a water flow generating means of the purifying apparatus 10 constructed as described above is operated and the water in the flow path 18 is vigorously discharged, the sewage below the bottom of the purifying apparatus 10 is removed from each filtration tank 11. This sewage is purified while passing through each filtration tank 11 and drained into the flow path 18 from each drain hole 15. On the other hand, since the flow path 18 and the submersible pump 21 are provided radially in three directions as shown in, for example, the purification device 10 or 40 in FIG. 1 or FIG. 6, the water flow released by the submersible pump 21 is Is efficiently stirred to the water's edge to form a circulating flow. This circulating flow raises pollutants and suspended matter deposited on the bottom of a lake or the like, and the sewage in which the polluted matter or suspended matter floats is drained from the water absorption hole 14
The water is absorbed into the respective filtration tanks 11, is efficiently purified, is discharged into the flow channel 18, and repeats the above circulation.

The aquatic plant 31 or the terrestrial plant 29 planted in the filtration tank 11 absorbs pollutants and suspended matter in the sewage in the filtration tank 11 as nutrients, and purifies the sewage. Growth is promoted, and the apparatus for purifying lakes and marshes of the present invention provides a good landscape as a floating island on which plants and birds gather around.

[0021]

Embodiments will be described with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a purifying device, and three filter tanks 11, 11, and 11 formed by a side plate 12 into a substantially regular hexagon composed of six sides A, B, C, D, E, and F in a plane. Two adjacent sides A and B of the filtration tank 11 project from each other through a gap.
Combine . For example, a gap is formed between one side A of one filter layer 11 and one side B of another filter layer 11 among the three filter layers 11, 11, and 11, and one side B of the one filter layer 11 is formed. A gap is formed between one side A of the remaining filtration layer 11. Therefore, the purifying device 10 forms a total of three gaps between two adjacent sides A and B of each of the filtration layers 11, 11, 11. The bottom surface of these three gaps is placed on the bottom plate 27 on the extension of the bottom surface of the filtration tank 11.
To form three horizontal flow channels 18, 18, 18 at least partially submerged in water.
The axial directions of 8, 18, and 18 are radially formed in three directions at an intersection angle of about 120 degrees from the center of the purification device 10.

Further, the purifying device 10 is provided with
At 18, the water in each flow path is directed to the outside of the purification device 10.
Submersible pumps 21, 21, 21 are provided as water flow generating means for discharging water horizontally .

Each of the filtration tanks 11, 11, 11 has an opening (19) on the upper surface, and floats 16, 1 having buoyancy for floating the purification device 10 on the water surface are provided at the edges of the openings.
6, 16 are provided.

Further, the bottom of the filtration tank 11 is
And two sides A and B adjacent to the filtration tank 11 on the bottom surface.
Is provided with a water absorption hole 14 formed of a parallelogram-shaped net 141 parallel to the two sides D and E of the filtration tank 11 facing the filter tank 11.
Drain holes 15 are formed in the side plate 12 at the corners of the two sides A and B facing the two flow paths 18, 18 in an appropriate range.
The drain hole 15 may be provided in the same range as the width of the flow path 18 located in front, but is not limited to this range. The drain holes 15 may be formed of a mesh or a porous material, or a large number of slits or holes may be formed in the side plate 12.

The water-absorbing hole 14 may be formed by providing a net on the entire bottom surface of the filtration tank 11, but as shown in FIG. It is better to provide the water absorption hole 1 partially on the bottom of the filtration tank 11.
Since the water in the lake or the like absorbed from 4 passes through the filtration tank 11 as long as possible and is drained from the drain hole 15, the purification efficiency is improved and it is effective.

The shape of the parallelogram of the water-absorbing hole 14 in FIG. 1 is designed so that the water absorbed from any position of the water-absorbing hole 14 reaches the drain hole 15 through the same distance. The two sides other than the two sides D and E of the filtration tank 11 forming the parallelogram are formed substantially parallel to the two sides A and B of the filtration tank 11, respectively. However, the water absorption hole 14 is not limited to the shape of a parallelogram, and may be another shape. Further, the water absorption hole 14 is not limited to the net-like body and may be formed of a porous material as in the case of the drainage hole 15, or the bottom plate 1
3 may have a number of slits or holes.

As shown in FIG. 2, the float 16 has a hollow rectangular cross section and is formed in a hexagonal shape along the edge of the opening (19) of the filter tank 11 as a whole.
An opening 19 of each filtration tank 11 is formed inside thereof. The float 16 may be partially provided at the edges of the openings 19, 19, 19 of the filtration tanks 11, 11, if the purification device 10 has a buoyancy by floating on the water surface.

As shown in FIG. 2, a filter medium 23 such as charcoal is accommodated in each of the filtration tanks 11, 11, 11 through the openings 19, 19, 19, and the filter medium 23 is filled with water. Through to purify.

The submersible pump 21 is an axial-flow type submersible pump. In FIG. 2, a motor and a propeller are built in the main body of the submersible pump 21, and water in the channel 18 is supplied from one of the axial directions of the submersible pump 21. The water is sucked into the submersible pump 21 and discharged from the other discharge port. In FIG. 3, a propeller 22 is provided on a rotating shaft of a motor body of the submersible pump 21. The motor of the submersible pump 21 may be either a DC type or an AC type. If this motor is an AC three-phase type submersible pump 21 as shown in FIG.
The propeller 22 can be easily rotated in the normal and reverse directions. By temporarily reversing the propeller 22, the direction of the water flow in the flow path 18 is changed, and the water in the filtration tank 11 flows backward as indicated by the two-dot chain line in FIG. 3. Then, the dust adhering to the water absorption hole 14 due to the backflow is blown outward and is easily removed from the water absorption hole (FIG. 3).

As shown in FIG. 1, the submersible pump 21 is provided near the end of the flow channel 18 to quickly and vigorously discharge the water in the flow channel 18 to the outside of the purification device 10 and However, the flow is not limited to this position, and may be provided at an arbitrary position in the flow path 18.

The rotary drive power source for the motor of the submersible pump 21 is connected to the motor of the submersible pump 21 of the purification device 10 floating on the water surface from a power source around the lake or the like via a cable and an operation panel. Can be operated on land around. Alternatively, as shown in FIG. 3, the solar panel 26 is set so that the sunlight is incident on the panel surface of the solar panel 26 at an angle as close to the vertical direction as possible (for example, in Japan, an inclination angle of about 35 degrees with respect to the water surface is set). Good)
Each of the floats 16, 16, 16 has a filtration tank 11, 11, 1
The solar panel 26 is installed diagonally to the south or two sides or one side, and the solar panel 26 converts the radiant energy of the sun into electric energy. This electric energy can be used as a rotational drive power supply for the motor of the submersible pump 21. .

The purifying apparatus 10 provided with the solar panel 26 is provided with a power storage facility (not shown) such as a battery, and the electrical energy of the solar panel 26 is stored in the power storage facility so that the submersible pump 21 can be operated at night. Can also be driven.

If the solar panel 26 is installed in a lake or a marsh, for example, as shown in FIG. 1, the solar panel 26 has sides B and C among the sides of the filtration tank 11 on the left side of FIG. ,
E and F, and sides A and A of the respective sides of the filtration tank 11 on the right side of FIG.
The solar panel 26 can be installed facing south at B, D, and E, and at sides A, F, C, and D among the sides of the filtration tank 11 in the upper part of FIG. However, the side B of the left filtration tank 11 in the figure and the side A of the right filtration tank 11 in the figure, and the side A of the upper filtration tank 11 in the figure and the right filtration tank 11 in the same figure. Since the sides B are close to each other, the solar panel 26 may be installed on one of the sides.

As described above, the solar panel 26 adjusts the inclination angle according to the incident angle of the sunlight as indicated by the two-dot chain line in FIG. You need to decide in advance.

Next, the operation of the above-described purification device 10 will be described. In FIG. 1, three flow paths 18, 18, 18
Are provided radially in three directions so as to form an intersection angle of 120 degrees with each other, so that the water in each of the flow paths 18, 18, and 18 is supplied to each of the submersible pumps 21, 22, as shown by the two-dot chain line in FIG.
By means of the reference numerals 1 and 21, the water is discharged in three directions on average into the water inside the lake or the like outside the purification device 10, and a water flow is effectively generated throughout the lake or the like up to the edge of the lake or the like. As a result, as shown in FIG. 2, the water near the water surface returns to the lower portion of the bottom of the purification device 10 again through the vicinity of the bottom surface of the lake or the like, as shown in FIG.
As described above, since the water in the flow channel 18 is discharged by the submersible pump 21, the water in the filtration tank 11 is drained into the flow channel 18 through the drain hole 15, and the drain water is used for the purification device 1
A circulating flow is generated in which the water below the bottom surface of 0 is absorbed into the filtration tank 11 from the water absorption hole 14. The contaminants and suspended matter deposited on the bottom of a lake or the like by this circulation flow rise into the water and flow below the bottom of the purification device 10, and the sewage in which the contaminated matter and suspended matter float is removed from each filtration tank 11, 11, 11 Water absorption hole 14,
Water is absorbed into the filtration tanks 11, 11, 11 through the mesh bodies 141, 141, 141 forming the drains 14, 14, and is purified while passing through a filtering material 23 such as charcoal in the filtration tank 11. The water is drained from the channel 15 into the flow channel 18 and is discharged to the outside of the purification device 10 by the submersible pump 21 again as described above. By repeating this circulation process, the water in the entire lake or the like is efficiently purified. That is,
The three submersible pumps 21, 21 and 21 serving as water flow generating means for vigorously discharging in three directions have a function of efficiently stirring the entire water of a lake or the like to generate a circulating flow, although the number is small, Sewage water below the bottom of the purification device 10 is absorbed through each of the water absorption holes 14, 14, 14, and the three filtration tanks 11, 1.
At the same time, the water is purified by passing it through the insides 1 and 11, thereby improving the water purification efficiency of lakes and marshes.

Since the water in each of the flow paths 18, 18, and 18 is discharged into the water in a lake or the like in three directions on average, the overall vibration of the purifying apparatus 10 is relatively small, and the purifying apparatus 10 itself also vibrates. The operation state is stabilized without any adverse effect due to the above-mentioned condition, and it does not exert a force to propel the purifying device in one direction.

As shown in FIG. 2, the purifying device 10 may be connected to a plurality of weights 25 provided on the bottom of a lake or the like by anchor ropes 24 so that the purifying device 10 does not move on the water surface. .

As shown in FIG. 4, a cultivation soil 28 is laid or raised on the upper surface of the filter medium 23 in the filtration tank 11, and when the plant 29 is planted in the cultivation soil 28, the plant 2
The roots of No. 9 extend into the filter medium 23 and absorb contaminants and suspended matters remaining in the filter medium 23 as nutrients, so that the inside of the filter tank 11 is cleaned and the growth of the plants 29 is promoted. The water purifier and other birds playing there and the surroundings make the purification apparatus 10 of the present invention a very good landscape as a floating island.

Further, as another embodiment, as shown in FIG.
For example, by growing aquatic plants 31 such as water hyacinth and Dutch mustard or other vascular plants that can grow on water,
The sewage flowing in the filtration tank 11 can be purified mainly by the activity of the rhizosphere microorganisms formed around the roots developed in the water. At this time, as shown in FIG. 5, the purifying device 10 provides a net 32 in the filtration tank 11 and
An aquatic plant 31 may be implanted in the container, or a number of cage-like net-like containers (not shown) may be attached to a bracket or a frame material provided in the filtration tank 11, and the aquatic plant 31 may be implanted in the net-like container. In addition, the floating aquatic plants can be floated on the water surface in the filtration tank 11 without providing the net-like body 32. The underwater roots of the aquatic plant 31
And nutrients such as nutrients in sewage adhere to the vicinity of the underwater root of the aquatic plant 31,
A colony of rhizosphere microorganisms is formed, and organic matter in the wastewater is decomposed by the microorganisms, absorbed from the underwater roots, and the wastewater is purified.

The purifying apparatus 10 shown in FIG. 5 creates an atmosphere with a good view as a floating island such as a lake, similarly to the purifying apparatus 10 shown in FIG.

In the purifying apparatus 10 shown in FIGS. 4 and 5,
As shown in FIG. 1 and FIG. 1, a ramp 33 such as an inclined plate or a stair may be provided at an arbitrary position of the float 16 for a water bird to walk up on the purification device 10.

Next, the purifying apparatus 1 of the embodiment shown in FIG.
Referring to FIG. 6, a purifying device 40 of another embodiment different from 0 will be described while omitting parts similar to those of the purifying device 10 of FIG.

Each of the filtration tanks 41, 41, 41 in FIG. 6 corresponding to each of the filtration tanks 11, 11, 11 in FIG. 1 is formed by a side plate 42 so that the cross section of the plane is circular, and the upper surface is circular. A float 46 having the same cross-sectional shape as the float 16 of the purification device 10 of the above-described embodiment is provided in an annular shape at the edge of the opening (49), and a net 441 is provided on the bottom surface of the filtration tank 41. The formed water absorption hole 44 is provided.

Further, in the purifying device 40, the above-mentioned three filtration tanks 41, 41, 41 abut each other in a substantially triangular shape with a gap therebetween as shown in FIG. That is, three filtration tanks 4
The side plates 4 of the filtration tanks 41, 41, 41 located on a triangular line formed by connecting the centers of the circles 1, 41, 41
A gap is provided between 2, 42 and 42, respectively. This gap becomes the minimum gap between the filtration tanks 41, 41, 41, and a gap larger than the minimum gap is formed at other positions. The entire lower surface of these gaps is closed with a bottom plate 51 on the extension of the bottom surface of the filtration tank 41, and extends outward with the width of the minimum gap so as to communicate with the gap located inside the minimum gap. To form flow paths 48, 48, 48. The axial directions of these three flow paths 48, 48, 48 are similar to the purification device 10 of the above-described embodiment by an angle of approximately 1 ° from the center of the purification device 40.
It is formed radially in three directions at 20 degrees. In each of the flow paths 48, 48, 48, submersible pumps 21, 21, 21 as water flow generating means are provided.

The three abutting filtration tanks 41, 4
1, 41 are formed in a circular arc G facing the flow path 48, for example, a side plate 42 forming an arc positioned in a triangle formed by connecting the centers of the circles of the respective filtration tanks 41, 41, 41, and drainage holes in an appropriate range. 45 are formed. This drain hole 45 is, similarly to the purification device 10 of the above-described embodiment, provided with the flow path 18 located at the front.
May be provided in the same range as the width of, but is not limited to this range.

On the other hand, the mesh body 441 of the water absorption hole 44 formed on the bottom surface of the filtration tank 41 has an arc H of an arbitrary length at a position opposed to the arc G, and the two ends X and Y of the arc H. It is formed in a shape surrounded by a circular arc J bulging from the position toward the center of the circle of the filtration tank 41. The shape and position of the circular arc J are provided substantially parallel to the circular arc G, and the water absorption hole 44 is formed in the same manner as the water absorption hole 14 of the purification device 10 of the above-described embodiment.
Although the water absorbed in 4 is provided so as to move as much as possible in the filtration tank 41, the shape is not limited to this.

The operation of the purifying device 40 is substantially the same as that of the purifying device 10 of the above-described embodiment, and will not be described.

Next, a purification device 60 according to another embodiment is further described.
With reference to FIG. 7, the same parts as those of the purification device 10 will be omitted.

The cleaning device 60 has three sides K, L,
The six filter tank 61 having an opening 69 in a substantially equilateral triangle is formed and the top surface made of M, with a gap to each other adjacent two sides K and L of the filter tank 61 by the butting, the hexagonal throughout Form. For example, in terms of the positional relationship between one filtration layer 61 and other filtration layers that are in contact with both sides, one side K of one filtration layer 61 can be described.
And abuts against the one side of the form a gap between one side L of the filtration layer 61, the gap between the side K of one side L and the other abutting on the side to <br/> Ru filtration layer 61 of the one filter layer 61 To form Therefore, the purifying device 60 forms a total of six gaps between two adjacent sides K and L of the six filtration layers 61. The lower surfaces of these six gaps are closed with a bottom plate 71 on the extension of the bottom surface of the filtration tank 61 to form six flow paths 68. Therefore, the axial directions of the six flow paths 68 are formed at an intersection angle of about 60 degrees from the center of the purification device 60 and are radially formed in the six directions. In these flow paths 68, similarly to the purification device 10 of the above-described embodiment,
The submersible pump 21 is provided as a water flow generating means for discharging water in the flow passage 68 to the outside of the purification device 60.

At the opening edge of each filtration tank 61, a float 66 having the same cross-sectional shape as the float 16 of the purification device 10 of the above embodiment is provided.

The bottom of each filtration tank 61 is provided with a water-absorbing hole 64 formed by a net-like body 641 having a triangular shape. In addition, the shape of the net-like body 641 forms a triangle whose base is an arbitrary length located at a substantially central position of one side M other than the two adjacent sides K and L of the filtration tank 61, It is not limited to a shape.

Further, the drainage water similar to the drainage hole 15 of the purification device 10 of the above-described embodiment is set in an appropriate range at each corner of the two sides K and L of the six filtration tanks 61 facing the respective flow paths 68. Hole 6
5 is formed.

The operation of the purifying device 60 is substantially the same as that of the purifying device 10 of the above embodiment. However, all of the six submersible pumps 21 may operate, but the six submersible pumps 2
Three submersible pumps 2 forming an angle of intersection of 120 degrees with respect to 1
Only one may act. Alternatively, the six flow paths 6
8, three submersible pumps 21 are provided only in three flow paths 68 having an angle of intersection of about 120 degrees with each other in the axial direction, and the other three flow paths 68 are provided on each side M located outside the purification device 60.
May be closed by a partition (not shown).

In the purifying device 60, the plurality of filtration tanks 61 are formed into isosceles triangles having sides K, L, and M of the same shape, and the adjacent two sides K and L of the plurality of filtration tanks 61 are formed. Can contact each other with a gap therebetween to form a polygon.

[0055]

Since the present invention is configured as described above, it has the following effects.

[0056] (1) filtration over vat plurality pieces each other physician with a gap
And butt, small in the gap by providing a float on the filtration tank
Ku and also to form a horizontal passage that died some water, and drain holes in the filtration tank facing the passage, the filter tank
The bottom surface is provided with a water intake port submerged in water , and the flow path is provided with a water flow generation means for discharging water in the flow path horizontally into the water, so that the water flow generation means drives the water in the flow path. The water is discharged from the purifier and purified by absorbing water from the bottom of the purifier through each water absorption hole and passing through each filter tank. In order to simultaneously perform the action of forming a circulating flow in the water of a lake or the like by agitation, it is possible to efficiently purify wastewater with a small number of water flow generating means, and to provide a highly efficient and inexpensive lake or the like. A purification device could be provided.

[0057] (2) a filtration tank forms a hexagon, three the filtration tank, and butt each other via the gap the two adjacent sides, thereby forming a flow path in said gap, facing the flow path Since drain holes are formed at two corners of the adjacent filtration tanks, the axial direction of each flow path is radially formed in three different directions from the substantially central position of the purification device. The water discharged from the drain holes is discharged from each channel into the water in a lake or the like in three directions on average. Therefore, water in a lake or the like can be uniformly and efficiently stirred by a small number of water flow generating means, so that a purification device for a lake or the like with high purification efficiency and low cost can be provided. In addition, since the water is discharged into the water in the lake or the like from each flow path in three directions, the fluctuation of the entire purification device is reduced, and the operation state of the device can be stabilized.

(3) Since a parallelogram net including two sides opposite to the two sides of the adjacent filtration tank is provided on the bottom surface of the filtration tank to form a water absorption hole, the inside of a lake or the like that has absorbed water from the water absorption hole is formed. Of the wastewater can be passed through the filtration tank relatively evenly over a long distance, and the wastewater can be purified efficiently.

(4) The filtration tank has a circular shape, and the three filtration tanks abut each other in a substantially triangular shape with a gap therebetween to form a flow path in the gap and the abutment facing the flow path. Since the drainage holes are formed in the arc of the filtration tank, a purification device for a lake or the like having a high purification efficiency and a low cost can be provided for the same reason as the above item (2).

(5) An arc of an arbitrary length of each filtration tank facing the arc of each of the filtration tanks abutting on the bottom surface of the filtration tank, and bulging from both ends of the arc of the arbitrary length toward the center of the circle of the filtration tank. Since a water absorption hole was formed by providing a net-like body formed by the protruding arc, the sewage passing through each filtration tank could be efficiently purified for the same reason as in the above item (3).

[0061] (6) a filtration tank forms a triangle, a plurality of the filtration tank, to form a polygon in the whole and butt each other via the gap the two adjacent sides to form a flow path in said gap At the same time, a drain hole was formed at the corner of two sides of the adjacent filtration tank facing this flow path, and for the same reason as in the above item (2),
It was possible to provide an inexpensive purification device for lakes and marshes with high purification efficiency.

(7) On the bottom surface of the filtration tank, a net-like body having a triangular shape whose bottom is an arbitrary length at the center of the other one of the two sides of the adjacent filtration tank is provided to form a water absorption hole. For the same reason as in the item 3), the sewage passing through each filtration tank could be efficiently purified.

(8) Since a solar panel for driving power of the water flow generating means is provided on the float, no running cost is required because the solar radiant energy is used, and a power transmission cable is connected from a power source around a lake or the like. Since there is no need to transmit power via the shore, it is possible to provide a purification device capable of performing purification treatment of lakes and marshes even in offshore where power transmission is difficult.

(9) Since the water flow generating means is a direct current submersible pump or an alternating current propeller pump, in the case of an alternating current propeller pump, the propeller is easily rotated forward and reverse to reverse the water in the flow path of the purification device and the purification tank. As a result, dust particles adhering to the water absorption holes could be easily removed.

(10) Since the aquatic plants are planted in the filtration tank, the aquatic plants absorb and purify the sewage by using the pollutants and suspended matter of the sewage flowing in the filtration tank as nutrients, and promote the growth of the plants. Therefore, the apparatus for purifying lakes and marshes of the present invention could have a function as a floating island giving an extremely good landscape.

(11) The cultivation soil was spread in the filtration tank, and plants were planted on the cultivation soil. This plant removed water contaminants and suspended matter remaining in the filtration tank from the roots extending into the filtration tank. Since it absorbs as nutrients and purifies the inside of the filtration tank and promotes the growth of plants, the apparatus for purifying lakes and marshes of the present invention has the above (11).
Like the item, it was possible to provide a function as a floating island that gives an extremely good landscape.

[Brief description of the drawings]

FIG. 1 shows a plan view of an embodiment of the device of the present invention.

FIG. 2 is a sectional view taken along line BB in FIG. 1;

3 shows an embodiment of the device according to the invention different from that of FIG. 2,
FIG. 2 is a sectional view taken along line BB of FIG. 1.

4 shows an embodiment of the apparatus of the present invention which is different from FIGS. 2 and 3, and is a cross-sectional view taken along line BB of FIG.

5 shows an embodiment of the apparatus of the present invention which is different from FIGS. 2, 3 and 4, and shows a sectional view taken along the line BB in FIG. 1;

FIG. 6 shows a plan view of another embodiment of the device of the present invention.

FIG. 7 shows a plan view of another embodiment of the device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Purification apparatus 11 Filtration tank 12 Side plate 13 Bottom plate 14 Water absorption hole 15 Drainage hole 16 Float 18 Flow path 19 Opening 21 Submersible pump 22 Propeller 23 Filter material 24 Anchor rope 25 Weight body 26 Solar panel 27 Bottom plate 28 Cultivated soil 29 Plant 31 Aquatic plant 32 Reticulated body 33 Ramp 40 Purification device 41 Filtration tank 42 Side plate 44 Water absorption hole (of filtration tank 41) 45 Drainage hole (of filtration tank 41) 46 Float (of filtration tank 41) 48 Flow path 49 Opening 51 Bottom 60 Purification device 61 Filtration tank 64 Water absorption hole (of filtration tank 61) 65 Drainage hole (of filtration tank 61) 66 Float (of filtration tank 61) 68 Flow path 69 Opening 71 Bottom plate 141, 441, 641 Mesh A, B, C, D, E, F side (of the filtration tank 11) G, H, J Arc K, L, M side (of the filtration tank 61)

Claims (11)

(57) [Claims] 1. A to butt <br/> through a gap the Filtration vat plurality pieces each other physician, the less in the provided float clearance to the filtration tank
Also forms a horizontal flow path partially submerged in water, and a drainage hole is formed in a filtration tank facing this flow path, and a bottom of the filtration tank is formed.
Forming a water inlet submerged in the water to the surface, the flow path, purifier lakes such as that characterized in that a water flow generating means for releasing the water to water in the flow path in the horizontal direction. Wherein said filtering tank forms a hexagon, three the filtration tank, and butt each other via the gap the two adjacent sides, thereby forming a flow path in said gap, facing the flow path 2. A drain hole is formed at two corners of the adjacent filtration tank.
A purifying device for a lake or the like as described in the above. 3. The lake or marsh according to claim 1 or 2, wherein a water absorption hole is formed by providing a parallelogram mesh including two sides opposite to two sides of the adjacent filtration tank on a bottom surface of the filtration tank. Purification device. 4. The filter tank has a circular shape, and three filter tanks abut each other in a substantially triangular shape with a gap therebetween to form a flow path in the gap and the abutment facing the flow path. The purification device for lakes and marshes according to claim 1, wherein a drain hole is formed in an arc of the filtration tank. 5. An arc of an arbitrary length of each of the filtration tanks facing the arc of each of the abutting filtration tanks and a center of a circle of the filtration tank from both ends of the arc of the arbitrary length on the bottom surface of the filtration tank. 5. The apparatus for purifying lakes and marshes according to claim 1, wherein a water absorbing hole is formed by providing a net-like body formed by the bulging arc. 6. form the filtration tank is triangular, a plurality of the filtration tank, to form a polygon in the whole and butt each other via the gap the two sides adjacent to form a flow path in said gap 2. The apparatus for purifying lakes and marshes according to claim 1, wherein drain holes are formed at two corners of the adjacent filtration tank facing the flow path. 7. A water absorption hole is formed in a bottom surface of the filtration tank by forming a triangular mesh body having a bottom at an arbitrary length at the center of the other one of two sides of the adjacent filtration tank. Or a purification device for lakes and marshes according to 6. 8. A solar panel according to claim 1, wherein said float is provided with a solar panel for driving power of said water flow generating means.
The cleaning device for lakes and marshes according to 6 or 7. 9. The apparatus for purifying lakes and marshes according to claim 1, wherein said water flow generating means is a direct current submersible pump or an alternating current propeller pump. 10. A device for purifying a lake or the like, wherein an aquatic plant is planted in the filtration tank of the device for purifying a lake or the like according to claim 1. 11. A device for purifying a lake or the like, wherein a cultivation soil is spread in the filtration tank of the device for purifying a lake or the like according to claim 1, and a plant is planted on the cultivation soil.