WO1996028387A1

WO1996028387A1 - Water purifying apparatus for reservoir

Info

Publication number: WO1996028387A1
Application number: PCT/JP1996/000483
Authority: WO
Inventors: Yutaka Tokunaga
Original assignee: Yutaka Tokunaga
Priority date: 1995-03-14
Filing date: 1996-02-28
Publication date: 1996-09-19
Also published as: JPH08243540A; JP4052360B2; AU4843596A

Abstract

Floating water tanks having shading property are disposed on a water surface of a reservoir so as to cover almost the entire water surface, and a running water condition is produced to return water in the reservoir through the floating water tanks to the reservoir.

Description

Specification

Reservoir water purification equipment

【Technical field】

The present invention relates to a water purification device suitable for purifying water from a closed reservoir such as a reservoir, a regulating pond, a lake, a swamp, a dam, and the like, particularly a large-scale reservoir.

[Background Art]

Conventionally, for example, residential ponds (organic wastewater, washing water) often flow into a pond because it is located near a city, and pond and ranch drainage flows into a pond in a rural area. Therefore, the water in these ponds is rich in nitrogen and phosphorus components. When this water quality is exposed to sunlight, phytoplankton, especially aquatic plants (Microcyst is aeruginosa KUTZING), breed due to the action of photosynthesis, and the water surface turns green, which makes it unsightly. In these ponds, actinomycetes are generated in the pond and may cause odor.

Therefore, in the case of a small pond, a net cover or a roof covering the water surface is installed to shield the light, and measures are taken to prevent the occurrence of aquatic fish.

However, if the surface of the pond is covered with a net or roof, the appearance of the pond is poor. In addition, large-scale ponds have a problem in that it is difficult to cover the surface of the pond, and the view is harmful. Various methods have been studied for suppressing the generation of algae such as aquatic fish, but at present there is no good decisive means.

DISCLOSURE OF THE INVENTION

Therefore, the present inventors have achieved the present invention by focusing on the fact that if the supply of light to the pond is blocked by a light-shielding floating water tank, the photosynthetic action of algae can be prevented and the occurrence and proliferation of algae can be suppressed. It was done.

That is, in the reservoir, such as an object of the present invention basin prevents algae occur such Aoko, clean water _c and to provide a water purification device of the water adapted to maintain the other of the present invention The purpose is to provide a water purification device that can improve the landscape of the reservoir.

The present invention arranges a light-blocking floating water tank on the water surface so as to cover most of the water surface of the reservoir, and configures a flowing water state in which the water in the reservoir is returned to the inside of the reservoir through the floating water tank. It is characterized by unification.

A light-shielding floating tank blocks the water surface. The floating tank is circulated, with the water from the reservoir flowing back to the reservoir. Since the water is contained in the floating water tank, there is no discomfort in the appearance of the reservoir surface.

According to the present invention, most of the water surface of the reservoir is shielded from light, and the water is floated and circulated between the reservoir and the reservoir, so that the generation of algae such as algae in the water in the reservoir, particularly in the water near the surface of the reservoir. Can be prevented. Since the floating tank placed on the water surface is filled with water, the water surface of the reservoir looks the same as the surface of the water in the floating tank, and the appearance of the water surface of the entire reservoir is not uncomfortable. Can be good.

The above-mentioned floating water tank can have a shallow, open-top container structure that has a bottom surface of a light-shielding sheet and can be stored on the water surface. The floating tank will be constructed to float on the water surface as appropriate.

Since the floating tank floats on the surface of the reservoir and the water is stored shallowly, the appearance of the surface of the entire reservoir can be good.

Further, the present invention can be provided with a purifying means for purifying the water in the reservoir and returning it to the inside of the reservoir. The water in the reservoir can be purified by this purification means. Since the water in the reservoir is always purified and returned, the water in the entire reservoir becomes purified water.

The purifying means may be a purifying device for removing suspended matters, reducing BOD (or COD), and performing water treatment for preventing the generation of algae.

The water in the reservoir or floating tank is treated by the purification equipment as treated water that has been treated to prevent suspended solids, BOD (or COD) and algae.

In other words, the water in the reservoir has a water quality that removes suspended matter, reduces BOD (or COD), and prevents the generation of algae such as ryoko.

Further, in the present invention, an oxygen supply means for supplying oxygen to the water in the reservoir can be provided.

The oxygen supply means supplies oxygen to the water in the reservoir and eliminates the lack of oxygen in the water.

Water reservoirs by oxidation of the oxygen supply means, Ru good quality and without resulting oxygen-rich ₀

The oxygen supply means may be a fountain device for jetting water from the reservoir into the air. The water in the reservoir is injected into the air by the fountain device, bringing the water and air into contact, and supplying air to the water. The fountain improves the landscape of the reservoir.

In the present invention, the floating water tank may have a size that covers most of the water surface of the reservoir and has a fountain hole for installing a fountain device.

In the fountain hole of the floating water tank, the fountain pipe of the fountain device can be placed and the fountain can be made o

According to this floating water tank, most of the water surface of the reservoir is covered by the floating water tank, so that it is possible to prevent the generation of algae such as fish and the fountain can be disposed in the fountain hole by using a fountain device. It is convenient.

Further, the present invention is characterized in that a pot body planted with a plant is provided in the floating water tank or on the outer periphery of the floating water tank. Reservoirs suitable for the present invention are various closed water areas such as ponds, lakes, swamps and dams for regulating or agricultural use.

When a pot is planted with plants, the water surface of the reservoir can be beautifully displayed by the plants, and the reservoir can have a good landscape.

[Brief description of the drawings]

FIG. 1 is a plan view of a reservoir in which a water purification device according to an embodiment of the present invention is arranged.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged view taken along the line II-II of FIG.

Figure 4 is another example of a floating water tank.

FIG. 5 is a diagram illustrating the operation of the water purification device.

FIG. 6 is a sectional view showing another example of the water purification device.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, examples embodying the present invention will be described.

(First embodiment)

FIG. 1 is a plan view of a reservoir 1 provided with a water purification device 10 of the present example, and FIG. 2 shows a cross-sectional structure of the reservoir 1 along line II-II in FIG. Reservoir 1 is a large closed pond near the city (for example, an elliptical shape with a short diameter of 30 m and a long diameter of 60 m, and an average depth of about 7 to 8 m). It is under the condition that some wastewater of the nature flows in. As shown in Fig. 1, a walking path 2 is provided around the reservoir 1 The park and trees 3 are also located, creating a park-like environment.

As shown in FIG. 1 and FIG. 2, the water purification device 10 of this example includes a floating water tank 11 floated on the water surface 1A of the reservoir 1, a purification means (purification device) 21 for purifying water in the reservoir 1, and a reservoir 1 Oxygen supply means 31 for supplying oxygen to the water inside.

The floating tank 11 is a shallow container having a size that covers most (about 80% or more, in this example, about 85%) of the water surface 1A (preferably the standard water level) of the reservoir 1 and has an open upper portion, for example, a deep container. It is formed in a dish-shaped container about 20 cm in length. In the reservoir 1 of this example, a fountain device 31A as an oxygen supply means 31 is provided at the center position so that the center of the floating water tank 11 is a fountain hole having a predetermined diameter, and the fountain surface 1B is provided. I'm sorry. That is, the floating water tank 11 surrounds the outer peripheral portion 12 and the peripheral portion 13 of the fountain hole with a material having high buoyancy such as wood or foamed resin, and a support frame 14 is disposed at a predetermined position serving as a bottom surface, so that the light shielding property is improved. It is configured with the bottom surface 15 attached, and has a structure that floats sufficiently on the water surface 1A.

An outlet 12A (see FIG. 3) for facilitating the outflow of water in the tank is cut off at an appropriate place on the outer peripheral portion 12 of the floating water tank 11. The light-shielding bottom surface 15 is made of a colored resin sheet, water-resistant cloth, or a low-density resin plate that does not allow light to pass through, such as a foamed resin layer. In short, the floating water tank 11 may have any structure as long as its bottom is light-shielding and floats on water. Floating water tank 11 is fixed in place of reservoir 1 by an appropriate fixing means 16 such as a wire. The fixing means 16 is desirably a means capable of responding to fluctuations in water level. The floating water tank 11 is made of a colored resin sheet that does not allow light to pass through and is formed in a tall shape with the upper side as an air chamber 11B, like the floating water tank 11A shown in Fig. 4. 11. Floating fixing means 16 for fixing at 1 C may be used.

As shown in FIG. 2, a fountain device 31 A is installed at the center of the reservoir 1 as a water oxygen supply means 31. The fountain device 31A is installed on a fixed base 32 on the bottom 1C of the reservoir 1 and its squirt pipe 35 protrudes from the center of the fountain surface 1B of the floating water tank 11 and is operated by the submersible water suction pump 34. The water sucked through the underwater suction port 33 is jetted into the air via the jet pipe 35 and dropped on the surface of the fountain to bring the water into contact with the air. In addition, the water that gushes into the air, the so-called fountain, gives the reservoir 1 a refreshing feeling.

On the other hand, on the outer peripheral portion 12 of the floating water tank 11 and the peripheral portion 13 of the fountain hole, a large number of pots 41 in which the aquatic plants S are planted are mounted at predetermined intervals. As shown in Fig. 3, each pot 41 For example, it is attached to the outer peripheral part 12 and the peripheral part 13 of the floating water tank 11 in a floating manner via detachable connection means 42 such as a hook and a ring. The pot body 41 floats on water and has a structure. In this example, a floating plate 43 made of a foamed resin is joined to the bottom surface of the wooden pot body 41A to increase buoyancy. As the aquatic plant S, reeds, papyrus, lotus, yoshi, and tama are used. In addition, the pot body planted with the aquatic plant S may be fixed or floated in a floating water tank.

As shown in FIGS. 1 and 2, the purifying means 21 sucks water in the reservoir 1 at a suction port 22 of a water suction pump 23, sends the water to a main body 24 of a device on the ground, and floats at the main body 24. (SS) removal, BOD (Biochemical Oxygen Demand) or COD (Chemical Oxygen Demand) reduction, N and P reduction, etc. You. The treated water is discharged into the floating tank 11 through the drain pipe 25 as treated water.

Thus, the water in Reservoir 1 circulates as shown by the arrow in Fig. 5, and clean water is maintained.

That is, the deep water at the center of the reservoir 1 is sucked from the suction port 33 by the water suction pump 34 of the fountain device 31A, comes into contact with air jetted from the jet pipe 35, and then falls on the fountain surface 1B, and is rich in oxygen. It is treated as water, and the treatment of oxygen contact in this fountain is continued to increase the DO value (dissolved oxygen value) of the water.

On the other hand, in the purification means 21, the water sucked from the suction port 22 by the water suction pump 23 is treated water in which the suspended matter is removed, the BOD (or COD) is reduced, and the N and P are reduced in the main body 24. Then, the water is discharged to the floating water tank 11, and the discharge of the treated water is continued.

In the meantime, the treated water is stored in the floating water tank 11 and the water is continuously discharged into the floating water tank 11, so that the water (the treated water) in the floating water tank 11 flows into the reservoir 1 from each outlet 12A. However, a constant flow occurs in the floating water tank 11. A part of the treated water is allowed to flow to the reservoir 1 through the pot 41. Since the bottom surface of the floating tank 11 is shielded from light, the water below the floating tank 11 is not exposed to sunlight. The water in the Floating Water Tank が is exposed to sunlight, but the water depth is shallow, treated water, and it flows from the water discharge site to each outlet 12A and does not stay, so algae such as coconut are exposed even in sunlight. Does not occur. In addition, floating water tank One one

In this example, the water in step 11 was allowed to flow to Reservoir 1 in about 2 days, considering that if water stayed within the tank for 3 to 4 days, no coconut was found.

On the other hand, the water below the floating tank 11 is not exposed to sunlight.However, at the center of the reservoir 1, the deep water is blown up into the air by the fountain means 31A, comes into contact with sunlight and air, and returns to the reservoir 1. Deep water circulates and oxygen deficiency is resolved. Further, at a predetermined side portion of the reservoir 1, the water in the reservoir 1 is sucked into the purifying means 21, subjected to water treatment for preventing cocoa generation, returned to the floating water tank 11 as treated water, and returned to the respective outlets 12 of the floating water tank 11. The circulation from A to reservoir 1 is repeated. For this reason, the water in the entire reservoir 1 is purified and circulated, and the generation of algae such as water cocoa in the entire reservoir 1 can be prevented. That is, the reservoir 1 is kept clean.

In addition, since the pot 41 in which the aquatic plant S is planted is attached around the floating water tank 11, the reservoir 1 can be beautifully formed by the aquatic plant S.

(Second embodiment)

In the reservoir 1 of the embodiment described above, the treated water passed through the purification means 21 was returned to the floating water tank 11 and the treated water passed through the floating water tank 11 was returned to the reservoir 1. Is not limited to this, and may be, for example, a water purification device 50 shown in FIG. Further, as the purification means 21 in the above-described embodiment, another water treatment device such as a normal wastewater treatment device (see FIG. 6) can be used.

That is, in the water purification device 50 of FIG. 6, reference numeral 51 denotes two separated floating water tanks, 52 denotes a connecting pipe connecting the two floating water tanks 51, and 53 denotes a fountain surface provided between the two floating water tanks 51.

The purifying means 55 is for improving the water quality and for preventing the occurrence of sea flakes.The water in the floating water tank 51 is introduced into the water storage chamber 57 through the introduction pipe 56, and the introduced water is filtered by the water suction pump 58. The effluent is sent to the treatment chamber 59 via the contact chamber 60 and then to the treated water chamber 61, and the treated water in the treated water chamber 61 is returned to the reservoir 1 by the water pump 62 and the water pipe 63. For this reason, the water in the reservoir 1 provided with the purification means 55 shown in Fig. 6 enters each floating water tank 51, and the water in the floating water tank 51 is sent from the introduction pipe 56 to the purification means 55 to be treated water. The water returned to reservoir 1 is circulated. In addition, in the reservoir 1 of FIG. 6, the fountain device 31A performs the same operation as the above-described embodiment. Each floating water tank 51 shown in Fig. 6 does not have a pot 41 of aquatic plant S, but each floating water tank 51 has a pot of aquatic plants such as 莲 in the water tank. The beauty of has been improved. The water surface 1A of the reservoir 1 in FIG. 6 is shielded from light by the floating water tank 51, and the water is circulated appropriately, so that algae such as fish do not occur.

In addition, as long as the floating water tank in the present invention covers about 80% or more of the water surface 1A of the reservoir, one large or large-sized floating tank may be appropriately arranged and used. The floating water tank may have a telescopic structure capable of coping with fluctuations in water level. In addition, the treatment capacity of the purification means 21, 55 and the fountain device 31A can be determined by the water quality condition or scale of the reservoir 1. The oxygen supply means 31 is, in addition to the fountain device 31A, an aeration means (not shown) for releasing air into water, or an aeration water wheel device (not shown) capable of bringing water on the water surface into contact with air. Can be adopted.

In the first and second embodiments described above, the aquatic plants were planted in the pots. However, the plants to be planted in the pots are not limited to aquatic plants, and plants such as flowers, foliage plants, pine, cedar, plugs, etc. It may be.

Claims

The scope of the claims

1. The shading floating water tank is arranged on the water surface so as to cover most of the water surface of the reservoir, and at the same time, the flowing water is returned to the reservoir through the floating water tank through the floating water tank. Reservoir water purification equipment.

2. The water purifying device for a reservoir according to claim 1, wherein the floating water tank has a shallow water storage tank having a light-shielding sheet bottom surface, an open upper portion, and a container structure floating on the water surface.

3. The water purifying device for a reservoir according to claim 1, further comprising a purifying means for purifying the water in the reservoir and returning it to the inside of the reservoir.

4. The water purification device for a reservoir according to claim 3, wherein the purification means is a purification device that removes suspended matter, reduces BOD or COD, and performs water quality treatment for preventing the generation of algae.

5. The water purifier for a reservoir according to claim 1, which is provided with an oxygen supply means for supplying oxygen to the water in the reservoir.

6. The water purifier for a reservoir according to claim 3, wherein an oxygen supply means for supplying oxygen to the water in the reservoir is provided.

7. The water purification device for a reservoir according to claim 5, wherein the oxygen supply means is a fountain device that jets water from the reservoir into the air.

8. The reservoir according to claim 7, characterized in that the floating tank is sized to cover most of the water surface of the reservoir and is provided with a fountain hole for installing a fountain device. Water purification equipment.

9. The water purification device for a reservoir according to claim 1, wherein a pot body planted with a plant is arranged on the outer periphery of the floating water tank or the floating water tank.

10. The water purification device for a reservoir according to claim 3, wherein a pot body in which a plant is planted is provided in the floating water tank or at an outer peripheral portion of the floating water tank.

11. The water purifier for a reservoir according to claim 5, wherein a pot body planted with a plant is provided in the floating water tank or on an outer peripheral portion of the floating water tank.