JPH0655015A - Water purifying device for lake and the like - Google Patents

Abstract

PURPOSE:To efficiently purify the water of the lakes, etc., with the inexpensive water purifying device by pressing plural pieces of filter chambers provided with floats at opening end edges to each other via spacings and providing the formed flow passages with submerged pumps for releasing water. CONSTITUTION:Three pieces of the respective filter chambers 11 constitute a hexagonal shape on the plane, open at the front surfaces, have water suction holes 14 on the bases and are provided with the floats 16 at the end edges of opening 19. The adjacent two sides A, B of the filter chambers 11 are pressed to each other via the spacings to form the three flow passages 18 with the spacings. Further, drain holes 15 are formed in the corner angle parts of the adjacent two sides of the filter chambers 11 facing the flow passages 18 and the submerged pumps 21 are provided in the respective flow passages 18. The water in the flow passages 18 is released in three directions by the submerged pumps 21, by which the water of the lakes, etc., is efficiently stirred to the edge of the water and circulating flow is formed. The circulating flow forces the floating solids settled on the bottoms of the lakes, etc., to ascend. The sewage is sucked from the respective water suction holes 14 and is purified during the passage in the filter chambers 11. The purified water is discharged from the respective drain holes 15 into the flow passages 18 and is released again by the submerged pumps 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification device for lakes and ponds, artificial lakes such as dams and reservoirs, artificial ponds, water tanks and rivers (hereinafter referred to as "lakes and the like"). The present invention relates to a purification device that agitates and circulates the agitated water so as to pass through the inside of a filtration tank for purification.

[0002]

2. Description of the Related Art Generally, as a purification device for lakes and marshes, for example, as shown in JP-A-4-18993, an aeration device equipped with a float is floated on the water surface, and a submersible motor of a submersible motor is mounted at the center of the mount of the aeration device. A water flow generator with blades attached to the rotating shaft is provided, and this water flow generator generates upward water flow,
This water stream is jetted into the atmosphere, and the air in the atmosphere is mixed and dropped to aerate the water. At the same time, a plurality of units (two or four in the embodiment) other than the water flow generator are mounted on the mount of the aeration device.
Water flow generators are provided, and these water flow generators generate water flow in the horizontal direction to agitate lakes and marshes having a wide and complicated shape.

Further, as another purifying device, as shown in, for example, Japanese Utility Model Laid-Open No. 3-79897, a filtration tank in which a purification treatment material is housed between inner and outer peripheral walls made of a mesh on a bottom plate, and the inside of this filtration tank A purifying apparatus main body having a 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 main body of the purifying device 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 portion. Water in the central space is poured onto the surface of a lake or the like through a discharge pipe provided above the submersible pump.

[0004]

In the former purification device of the prior art, the water flow generator that generates upward water flow is for aeration, and the plurality of water flow generators that generate horizontal water flow are lakes. However, it has a problem in that the manufacturing cost is high. Moreover, since the only water flow generator for direct purification is the water flow generator for aeration in the center of the purification device, even though the number of water flow generators is used and the manufacturing cost is high, There was a problem that it was not efficient.

Further, in the embodiment of the purifying device disclosed in Japanese Patent Laid-Open No. 3-193195, when there are two water flow generators which generate a water flow in the horizontal direction, the agitation in the lake is two-way, which is not sufficient. However, there is a problem that four water flow generators are provided for that purpose, and the manufacturing cost increases as the number of water flow generators increases.

Further, in the latter purifying device of the related art,
There is a problem that only the water flowing around the purification device is purified, but the water far away from the purification device is hardly purified. Therefore, it is not possible to sufficiently eliminate the problem that pollutants and floating substances in the water are deposited on the bottom of lakes and marshes due to poor circulation of water in lakes and marshes, resulting in eutrophication and the death of fish and aquatic microbes. It was difficult.

The present invention was developed to solve the above problems, and an object of the present invention is to provide a purification device which has a high purification efficiency for water such as lakes and marshes and is inexpensive.

[0008]

In order to achieve the above object, a purifying apparatus 10 for lakes and the like according to the present invention has an opening 19 on the upper surface and a water absorption hole 14 on the bottom surface, and a float at the edge of the opening 19. A plurality of filtration tanks 11 provided with 16 are brought into contact with each other via a gap 17 to form a flow path 18 in the gap 17. Further, a drainage hole 15 is formed in the filtration tank 11 facing the flow path 18, and the flow path 18 is provided with a submersible pump 21 as a water flow generating means for discharging the water in the flow path 18.

For example, in FIG. 1, the filtration tank 11 is
Has a hexagonal shape, three filter tanks 11 and two adjacent sides A and B are in contact with each other through a gap, and the flow path 1 is formed in the gap.
8, 18, 18 are formed and the flow paths 18, 1 are formed.
Drainage holes 15, 15, 15 can be formed in two adjacent even corners of the filtration tank 11 facing 8 and 18.

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

As another example, in FIG. 6, the filtration tank 11 has a circular shape, and three filtration tanks 11 are abutted in a substantially triangular shape with a gap therebetween, and the flow path 1 is formed in the gap.
8, 18, 18 are formed and the flow paths 18, 1 are formed.
It is also possible to form the drain holes 15 in each arc G of the abutting filtration tanks 11 facing the 8 and 18.

In this case, an arc H of an arbitrary length of each of the filtration tanks 11, 11, 11 that opposes the arc of each of the filtration tanks 11, 11, 11 that abuts the bottom surface of the filtration tank 11, 11, 11.
And a reticulate body 14 formed by an arc J bulging from both ends X and Y of an arc H of this arbitrary length toward the center of the circle of the filtration tank 11.
1 may be provided to form the water absorption hole 14.

Further, as another example, in FIG. 7, the filter tank 11 has a triangular shape, and a plurality of this filter tank 11, and in FIG. The purifying device 10 is abutted via a gap to each other to form a polygonal shape, and six passages 18 are formed in each of the gaps, and two adjacent sides of the filtration tank 11 facing the passage 18 are formed. It is also possible to form the drain holes 15 at the corners.

In this case, the water absorption hole 14 is formed by providing the bottom surface of the filtration tank 11 with a net-like body 141 having a triangular shape whose base is an arbitrary length at the center of the other side M of the two adjacent sides K and L. You can also do it.

It should be noted that the float 16 may be provided with a solar panel 26 for the drive power source of the water flow generating means.

Further, the submersible pump 2 as the water flow generating means.
1 can be a direct current type submersible pump or an alternating current three-phase type propeller pump.

Further, aquatic plants 31 can be planted in the respective filtration tanks 11 of the purification device 10 for lakes and marshes mentioned above.

Further, it is possible to lay a cultivation soil 28 in each of the filtration tanks 11 of the purification device 10 for lakes and the like mentioned above, and plant plants 29 in the cultivation soil.

[0019]

When the submersible pump 21 which is the water flow generating means of the purifying device 10 configured as described above is activated to expel the water in the flow path 18 vigorously, the sewage below the bottom surface of the purifying device 10 is filtered by each filtration tank 11 The water is absorbed from the water suction holes 14, and the wastewater is purified while passing through the respective filtration tanks 11 and is drained from the respective drain holes 15 into the flow path 18. On the other hand, since the flow path 18 and the submersible pump 21 are provided radially in three directions as shown in the purifying apparatus 10 or 40 of FIG. 1 or 6, for example, the water flow discharged by the submersible pump 21 is the water in a lake or the like. Is efficiently stirred to the water's edge to form a circulating flow. This circulating flow raises the contaminants or floating substances deposited on the bottom of lakes and marshes, and the sewage in which these contaminants and floating substances float is the water intake holes 14 of the purifying device 10.
The water is absorbed into each of the filtration tanks 11 to be efficiently purified and discharged into the flow path 18, and the above circulation is repeated.

The aquatic plant 31 or the land-based plant 29 planted in the filter tank 11 absorbs contaminants or suspended matter in the wastewater in the filter tank 11 as nutrients to purify the wastewater, and Growth is promoted, and the purification device for lakes and marshes of the present invention also provides a good landscape as plants and floating islands around which birds gather.

[0021]

EXAMPLES Examples will be described with reference to the drawings.
In FIG. 1, reference numeral 10 is a purifying device, which includes three filtration tanks 11, 11 and 11 each formed by a side plate 12 into a substantially regular hexagon having six sides A, B, C, D, E and F in a plane. Two adjacent sides A and B of the filtration tank 11 are brought into contact with each other with a gap therebetween. For example, among the three filtration layers 11, 11, 11, a gap is formed between one side A of one filtration layer 11 and one side B of the other filtration layer 11, and one side B of the one filtration layer 11 is formed. A gap is formed between the sides A of the remaining filtration layer 11. Therefore, the purification device 10 forms a total of three gaps between the adjacent two sides A and B of the respective filtration layers 11, 11, 11. A bottom plate 27 is formed by extending the lower surface of these three gaps on the extension of the bottom surface of the filtration tank 11.
To form three flow paths 18, 18, 18, and the axial directions of the three flow paths 18, 18, 18 form radial directions in three directions with an intersection angle of about 120 degrees from the center of the purification device 10. Is formed in.

Further, the purifying device 10 has the above-mentioned flow paths 18,
Submersible pumps 21, 21, 21 serving as water flow generating means for discharging the water in each flow path to the outside of the purification device 10 are provided at 18, 18.

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

The bottom of the filtration tank 11 is a bottom plate 13.
It is closed with two sides A and B adjacent to the filtration tank 11 on the bottom surface.
Is provided with a water absorption hole 14 formed by a parallelogram net 141 parallel to the two sides D and E of the filtration tank 11 facing each other.
Drainage holes 15 are formed in an appropriate range on the side plates 12 of the even corners of the two sides A and B facing the second flow paths 18, 18.
The drain hole 15 may be provided in the same range as the width of the flow path 18 located in the front, but the drain hole 15 is not limited to this range. The drain holes 15 may be formed of a mesh or a porous material, or the side plate 12 may be formed with a large number of slits or holes.

Further, the water absorption hole 14 may be formed by providing a mesh on the entire bottom surface of the filtration tank 11, but as shown in FIG. 1, the water absorption hole 14 is formed at a position far away from the position where the drain hole 15 is provided. The water absorption hole 1 should be provided partially on the bottom surface 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 suction hole 14 in FIG. 1 is such that the water absorbed from any position of the water suction hole 14 reaches the drain hole 15 through the same distance. The two sides other than the two sides D and E of the parallelogram-shaped filter tank 11 are formed substantially parallel to the two sides A and B of the filter tank 11, respectively. However, the water absorption hole 14 is not limited to the parallelogram shape and may have another shape. Further, like the drainage holes 15, the water absorption holes 14 are not limited to the mesh-like body and may be formed of a porous material, or the bottom plate 1
Multiple slits or holes may be formed in 3.

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

Further, as shown in FIG. 2, a filter medium 23 such as charcoal is stored in each of the filter tanks 11, 11, 11 through the openings 19, 19, 19 and the inside of the filter medium 23 is filled with water. To purify.

The submersible pump 21 is an axial submersible pump. In FIG. 2, a motor and a propeller are built in the submersible pump 21 main body, and the water in the flow passage 18 is supplied from one side of the submersible pump 21 in the axial direction. The water is sucked into the submersible pump 21 and the water is discharged from the other discharge port. In FIG. 3, the propeller 22 is provided on the rotary shaft of the 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 and a submersible pump 21 as shown in FIG. 3,
The propeller 22 can be easily rotated in the normal direction, and the water flow direction in the flow path 18 is changed by temporarily rotating the propeller 22 in the reverse direction so that the water in the filtration tank 11 flows backward as shown by the chain double-dashed line in FIG. Then, due to this backflow, the dust particles adhering to the water absorbing holes 14 are blown outward and easily removed from the water absorbing holes (FIG. 3).

As shown in FIG. 1, the submersible pump 21 is provided near the edge of the flow path 18 to expel the water in the flow path 18 to the outside of the purifying device 10 at a high speed and rapidly. Although it is possible to effectively generate a flow in water, it is not limited to this position and can be provided at an arbitrary position of the flow path 18.

As a rotation driving power source for the motor of the submersible pump 21, a motor of the submersible pump 21 of the purifying apparatus 10 floating on the water surface is connected from a peripheral power source such as a lake and marshes to a lake and the like. It can be operated on land around. Alternatively, as shown in FIG. 3, the solar panel 26 is designed so that the solar rays are 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 used). Good)
Filter tanks 11, 11, 1 on each float 16, 16, 16.
The solar panel 26 can be installed diagonally to the south of one side or the other side of the No. 1 to convert the radiant energy of the sun into electrical energy, and use this electrical energy as a rotational drive power source for the motor of the submersible pump 21. .

The purifying apparatus 10 provided with the solar panel 26 is provided with an unillustrated electricity storage facility such as a battery, and the electrical energy of the solar panel 26 is stored in this electricity storage facility to store the submersible pump 21 at night. Can also be driven.

If, for example, the solar panel 26 is installed in a lake or marsh of the purifying apparatus 10 as shown in FIG. 1, the sides B and C of the sides of the filter tank 11 on the left side of FIG. ，
E and F, and the sides A and R of the sides of the filter tank 11 on the right side of FIG.
The solar panels 26 can be installed facing south in B, D, E and sides A, F, C, D of the sides of the upper filtration tank 11 in the figure. However, the side B of the filtration tank 11 on the left side of the figure, the side A of the filtration tank 11 on the right side of the figure, and the side A of the filtration tank 11 on the upper side of the figure and the side A of the filtration tank 11 on the right side of the figure Since the sides B are close to each other, the solar panel 26 may be installed on either side.

As described above, the solar panel 26 adjusts the inclination angle according to the incident angle of the sun rays as shown by the chain double-dashed line in FIG. 3, and installs the sides of the respective filtration tanks 11, 11, 11 to be installed. You need to decide in advance.

Next, the operation of the above-mentioned purification device 10 will be described. In FIG. 1, three flow paths 18, 18, 18
Since the axial directions of the water are radially provided in three directions so as to form an intersection angle of 120 degrees with each other, the water in each of the flow paths 18, 18, 18 is supplied to each of the submersible pumps 21, 2 as shown by a chain double-dashed line in FIG.
1, 21 expels the water into the water inside the lake or the like outside the purifying device 10 in three directions on average, and effectively generates a water flow to the entire lake or the water up to the water's edge. As a result, the entire water in the lake or the like returns to the lower side of the bottom surface of the purifying device 10 again as shown in FIG.
As described above, since the water in the flow path 18 is discharged by the submersible pump 21, the water in the filtration tank 11 is drained into the flow path 18 through the drain hole 15, and the purification device 1 is discharged by this drainage.
A circulating flow occurs in which water below the bottom surface of 0 is absorbed into the filtration tank 11 through the water absorption holes 14. Due to this circulating flow, the contaminants and floating substances deposited on the bottom of lakes and marshes rise into the water and flow below the bottom of the purification device 10, and the sewage in which these contaminants and floating substances float is the respective filtration tanks 11, 11, 11. Water intake holes 14,
Water is absorbed into the filter tanks 11, 11, 11 via the nets 141, 141, 141 forming the 14, 14, and purified while passing through the filter medium 23 such as charcoal in the filter tanks 11, 15, 15. The water is drained from 15 into the flow path 18, and is again vigorously discharged to the outside of the purification device 10 by the submersible pump 21 as described above. By repeating this circulation process, the water in the whole lake etc. can be efficiently purified. That is,
Although the three submersible pumps 21, 21, 21 which are water flow generating means for vigorously discharging in three directions have a small number, they have an effect of efficiently agitating the water of the whole lake or the like to generate a circulating flow, Waste water under the bottom surface of the purifying device 10 is absorbed from the respective water suction holes 14, 14, 14 to obtain three filtration tanks 11, 1.
At the same time, the action of passing the water through the inside of 1, 1 and 11 to perform purification is performed, and the purification efficiency of water such as lakes and marshes is improved.

Since the water in each of the flow paths 18, 18, 18 is discharged into the water in the lake or the like in three directions on average, the sway of the entire purifying device 10 is relatively small, and the purifying device 10 itself also sways. The operating state is stable without any adverse effect due to or due to the force for propelling the purifying device in one direction.

As shown in FIG. 2, the purifying device 10 may be connected to a plurality of weights 25 sunk on the bottom surface 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, cultivating soil 28 is laid or piled up on the upper surface of the filter medium 23 in the filter tank 11, and a plant 29 is planted on this cultivating soil 28.
The root of No. 9 extends into the filter medium 23 and absorbs the 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 plant 29 is promoted. Due to the waterfowl and other birds playing in and around it, the purification device 10 of the present invention provides a very good landscape as a floating island.

Further, as another embodiment, as shown in FIG. 5, a water plant which is floating or water-repellent on the water surface in the filter tank 11,
For example, by growing an aquatic plant 31 such as water hyacinth, Dutch pepper or other vascular plant capable of growing on water,
It is possible to purify the sewage flowing in the filtration tank 11 mainly by the activity of the rhizosphere microorganism group formed around the roots developed in the water. At this time, as shown in FIG. 5, the purifying device 10 is provided with a mesh body 32 in the filtration tank 11, and the mesh body 32 is provided.
The aquatic plant 31 may be planted in the above, or a large number of basket-like net-like containers (not shown) may be attached to brackets or frame members provided in the filtration tank 11 and the aquatic plant 31 may be planted in the net-like container. Further, the floating aquatic plant can be floated on the water surface in the filtration tank 11 without providing the mesh body 32. The aquatic root of the aquatic plant 31 has a mesh body 32.
And developed immediately below or around the net-like container, and nutrients such as nutrient salts in the wastewater adhere around the aquatic root of the aquatic plant 31,
Rhizosphere microorganism colonies are formed, the organic matter in the wastewater is decomposed by the microorganisms, absorbed from the aquatic roots, and the wastewater is purified.

The purifying apparatus 10 shown in FIG. 5 creates a scenic atmosphere as a floating island such as a lake or marsh, like 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 slope 33 such as a sloping plate or stairs can be provided at an arbitrary position of the float 16 in order for a waterfowl to walk up on the purification device 10.

Next, the purifying apparatus 1 of the embodiment shown in FIG.
A purification device 40 of another embodiment different from 0 will be described with reference to FIG. 6, omitting the same parts as those of the purification device 10 of FIG.

Each of the filtration tanks 41, 41, 41 of FIG. 6 corresponding to each of the filtration tanks 11, 11, 11 of FIG. 1 is formed by the side plate 42 so that the plane cross section is circular, and the top surface is circular. Is provided with an opening 49, and a float 46 having a cross-sectional shape similar to that of the float 16 of the purification apparatus 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 three filtration tanks 41, 41, 41 are abutted in a substantially triangular shape with a gap therebetween as shown in FIG. That is, three filtration tanks 4
The side plate 4 of each of the filtration tanks 41, 41, 41 located on a triangular line formed by connecting the centers of the circles of 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 at other positions, a gap larger than the minimum gap is formed. The entire lower surface of these gaps is closed by a bottom plate 51 on the extension of the bottom surface of the filtration tank 41, and is extended outward with the width of the minimum gap so as to communicate with the gap located inside the minimum gap. To form the flow paths 48, 48, 48. The axial directions of these three flow paths 48, 48, 48 intersect each other from the center of the purifying device 40 at an angle of about 1 as in the purifying device 10 of the above-described embodiment.
It forms 20 degrees and is radially formed in three directions. Further, submersible pumps 21, 21, 21 as water flow generating means are provided in the respective flow paths 48, 48, 48.

Incidentally, the three filter tanks 41 and 4 which are abutted with each other.
Reference numerals 1 and 41 denote arcs G facing the flow path 48, for example, side plates 42 that form an arc located in a triangle formed by connecting the centers of the circles of the respective filtration tanks 41, 41, 41, and drain holes in an appropriate range. Forming 45. This drainage hole 45 is the same as the purification device 10 of the above-mentioned embodiment, and the flow path 18 located in the front is formed.
It is preferable to provide it in the same range as the width of, but not limited to this range.

On the other hand, the mesh body 441 of the water absorption holes 44 formed on the bottom surface of the filtration tank 41 has an arc H of an arbitrary length at a position facing the arc G and both ends X and Y of the arc H. It is formed in a shape surrounded by an arc J that bulges 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 absorbing hole 44 is the same as the water absorbing hole 14 of the purifying device 10 of the above-described embodiment.
The water absorbed in 4 is provided so as to move as much as possible within the filtration tank 41, but the shape is not limited to this.

Since the operation of the purifying device 40 is almost the same as that of the purifying device 10 of the above-mentioned embodiment, its explanation is omitted.

Next, a purifying device 60 according to another embodiment.
Will be described with reference to FIG. 7, omitting the same parts as those of the purification device 10.

The purifying device 60 has three sides K, L,
Six filtering tanks 61 each having a substantially equilateral triangle formed of M and having an opening 69 on the upper surface are contacted with two adjacent sides K and L of the filtering tank 61 with a gap therebetween to form a hexagonal shape as a whole. Form. For example, when describing the positional relationship with other filtration layers that are in contact with both sides of one filtration layer 61, one side K of one filtration layer 61 is described.
And a gap is formed between one side L of the filtration layer 61 abutting on one side and a side K of the filtration layer 61 abutting on the other side. Therefore, the purification device 60 forms a total of six gaps between the two adjacent sides K and L of the six filtration layers 61. The lower surfaces of these six gaps are closed by a bottom plate 71 on the extension of the bottom surface of the filtration tank 61 to form the six flow paths 18. Therefore, the axial directions of the six flow paths 68 are radially formed in the six directions with the intersecting angle of about 60 degrees from the center of the purifying device 60. In these flow paths 68, similar to the purification device 10 of the above-mentioned embodiment,
The submersible pump 21 is provided as a water flow generating means for discharging the water in the flow path 68 to the outside of the purifying device 60.

A float 66 having the same sectional shape as the float 16 of the purifying apparatus 10 of the above-described embodiment is provided at the opening edge of each filtration tank 61.

Further, a water absorption hole 64, which is partially formed by a mesh body 641 forming a triangle, is provided on the bottom surface of each of the filtration tanks 61. The shape of the mesh body 641 is a triangle whose base is an arbitrary length located at a substantially central position of one side M other than two adjacent sides K and L of the filtration tank 61. The shape is not limited.

Further, the same drainage as the drain hole 15 of the purifying apparatus 10 of the above-described embodiment is set in an appropriate range at each of the even corners 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 almost the same as that of the purifying device 10 of the above-mentioned embodiment. However, although all the six submersible pumps 21 may be operated, the six submersible pumps 2
Three submersible pumps with an axis crossing angle of 120 degrees out of 1
Only one may act. Alternatively, the six flow paths 6
Of the eight, the three submersible pumps 21 are provided only in the three flow paths 68 having an axial crossing angle of about 120 degrees, and the other three flow paths 68 are each side M located outside the purification device 60.
A space (not shown) may be closed between both ends of the.

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

[0055]

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

(1) The top surface is opened and the bottom surface has a water absorption hole,
A plurality of filtration tanks each having a float at the opening edge are in contact with each other with a gap therebetween to form a flow path in the gap, and a drain hole is formed in the filtration tank facing the flow path. Since the water flow generation means for discharging the water in the flow path is provided in the water flow generation means, the water flow generation means vigorously discharges the water in the flow path to absorb the dirty water below the purifying device from the water intake holes and filter the water. In order to simultaneously perform the action of passing through the tank to purify and the action of stirring the water in the lake or the like to the water edge with the water flow discharged to the outside of the purifying device to form a circulating flow in the water of the lake or the like, It was possible to efficiently purify sewage with a small number of water flow generating means, and to provide a purification device for lakes and the like that has high purification efficiency and is inexpensive.

(2) The filtration tank has a hexagonal shape, three adjacent filtration tanks are in contact with each other at two adjacent sides with a gap therebetween to form a flow path in the gap, and to face this flow path. Since the drain holes are formed in the two even corners of the adjoining filtration tanks, the axial direction of each flow path is formed in three different radial directions from the substantially central position of the purifying device. Water drained from the drainage holes is discharged from each channel into water in lakes and marshes in three directions on average. Therefore, the water in the lake or the like can be uniformly and efficiently agitated by a small number of water flow generating means, so that it is possible to provide the purification apparatus for the lake or the like which has high purification efficiency and is inexpensive. Moreover, since the water is discharged from each flow path into the water in the lake or the like in three directions on average, the fluctuation of the entire purification device is reduced and the operating state of the device can be stabilized.

(3) Since the water absorption holes are formed by providing the parallelogrammatic mesh body including the two sides opposite to the two sides of the adjacent filtration tank on the bottom surface of the filtration tank, the water absorption holes are formed in the lake or the like. It was possible to pass the dirty water in the filter tank relatively evenly over a long distance, and to efficiently purify it.

(4) The filtration tank has a circular shape, and three filtration tanks are abutted to each other in a substantially triangular shape with a gap therebetween to form a flow path in the gap and the abutting faces the flow path. Since the drainage holes are formed in the arc of the filtration tank, it is possible to provide a purification device for lakes and the like that has high purification efficiency and is inexpensive for the same reason as in the above item (2).

(5) An arc of an arbitrary length of each filtration tank facing the arc of each of the above-mentioned filtration tanks that abuts on the bottom surface of the filtration tank and both ends of the arc of this arbitrary length expand toward the center of the circle of the filtration tank. Since the water absorbing holes were formed by providing the mesh-like body formed by the arcs that emerged, it was possible to efficiently purify the sewage passing through the inside of each filtration tank for the same reason as in the above item (3).

(6) The filtration tank has a triangular shape, and a plurality of the filtration tanks are brought into contact with adjacent two sides with a gap therebetween to form a polygonal shape as a whole, and the flow passage is formed by the gap. At the same time, since the drain holes are formed in the two side even corners of the adjacent filtration tanks facing this flow path, for the same reason as in the above item (2),
It was possible to provide a purification device for lakes and the like that has high purification efficiency and is inexpensive.

(7) Since the water absorption holes are formed by providing a mesh-like body which forms a triangle whose bottom is an arbitrary length at the center of the other side of the two sides of the adjacent filtration tanks on the bottom surface of the filtration tank, For the same reason as in item 3), it was possible to efficiently purify the sewage passing through each filtration tank.

(8) Since the solar panel for driving power source of the water flow generating means is provided on the float, running cost is not required because the radiant energy of the sun is used, and the power transmission cable is connected from the power source around the lake or the like. Since it is not necessary to transmit power via the power transmission system, it is possible to provide a purification device that can perform purification treatment on lakes and marshes even in the 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 can be easily rotated in the forward and reverse directions to reversely flow the water in the flow path of the purifying device and the purifying tank. Then, the dust particles adhering to the water absorption holes could be easily removed.

(10) Since the aquatic plants are planted in the filter tank, the aquatic plants absorb and purify the sewage by using the pollutants and suspended matters of the sewage flowing in the filter tank as nutrients to promote the growth of the plants. Therefore, the purification device for lakes and marshes of the present invention could have a function as a floating island that gives an extremely good landscape.

(11) Cultivation soil was laid in the filtration tank, and plants were planted in the culture soil. Therefore, the plants could remove water contaminants and suspended matters remaining in the filtration tank from the roots extending into the filtration tank. Since the plant is promoted by absorbing the nutrients and purifying the inside of the filter tank, the purifying apparatus for lakes and marshes of the present invention is the same as the above (11).
Similar to the item above, it was able to have a function as a floating island that gives an extremely good landscape.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along the line BB of FIG.

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

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

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

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

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

[Explanation of symbols]

 10 Purification Device 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 26 Solar Panel 27 Bottom Plate 28 Cultivated Soil 29 Plant 31 Aquatic Plant 32 reticulate body 33 oblique path 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 channel 49 opening 51 bottom 60 purification device 61 Filtration tank 64 Water absorption hole (of filtration tank 61) 65 Drain hole (of filtration tank 61) 66 Float (of filtration tank 61) 68 Flow path 69 Opening 71 Bottom plate 141,441,641 Net A, B, C, D, E, F sides (of filtration tank 11) G, H, J arcs K, L, M sides (of filtration tank 61)

Claims (11)

[Claims] 1. A plurality of filtration tanks each having an opening on the top surface and a water absorption hole on the bottom surface and a float provided on the opening edge are brought into contact with each other with a gap therebetween to form a flow path in the gap,
A purification device for lakes and marshes, characterized in that a drainage hole is formed in a filtration tank facing this flow path, and a water flow generating means for discharging water in this flow path is provided in the flow path. 2. The filtration tank has a hexagonal shape, and three adjacent filtration tanks abut on two adjacent sides with a gap therebetween to form a flow path in the gap and face the flow path. The drainage hole is formed in the even sided corners of the adjacent filtration tanks.
Purification device for lakes and marshes. 3. The lake or the like according to claim 1, wherein a water absorption hole is formed by providing a parallelogrammatic mesh body including two sides facing two sides of the adjacent filtration tank on the bottom surface of the filtration tank. Purification device. 4. The filtration tank has a circular shape, and three filtration tanks are abutted to each other in a substantially triangular shape with a gap therebetween to form a flow path in the gap and the abutting faces the flow path. The purification device for lakes and marshes according to claim 1, wherein drain holes are formed in the 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 both ends of the arc of the arbitrary length in the center direction of the circle of the filtration tank on the bottom surface of the filtration tank. The purifying device for lakes and marshes according to claim 1 or 4, wherein a water absorbing hole is formed by providing a net-like body formed with a bulging arc. 6. The filtration tank has a triangular shape, and a plurality of the filtration tanks are abutted with two adjacent sides with a gap therebetween to form a polygonal shape as a whole, and a flow path is formed by the gap. At the same time, the purification device for lakes and marshes according to claim 1, wherein drain holes are formed in two even corners of the adjoining filtration tanks facing this flow path. 7. The water absorption hole is formed by providing a mesh body which forms a triangle having a base of an arbitrary length at the center of the other side of the two sides of the adjacent filtration tanks on the bottom surface of the filtration tank. Or the purification device for lakes and marshes described in 6. 8. The solar panel for driving power source of the water flow generating means is provided on the float, 1, 2, 3, 4, 5,
Purification device for lakes and marshes as described in 6 or 7. 9. The purifying device for lakes and marshes according to claim 1, 4 or 6, wherein said water flow generating means is a direct current submersible pump or an alternating current propeller pump. 10. A purification device for lakes and marshes, wherein aquatic plants are planted in the filtration tank of the purification device for lakes and marshes according to claim 1. 11. A purification device for lakes and marshes, wherein cultivation soil is laid in the filtration tank of the purification device for lakes and marshes according to claim 1, and plants are planted in the cultivation soils.