JPH0824889A - Spray aeration-type water purification device - Google Patents

Abstract

PURPOSE:To provide a water purification device which can be used at a site where no power supply is available and also in a condition where there are floating refuse, algae and muddy sediments. CONSTITUTION:This spray aeration-type water purification device consists of a spray unit 2 which is constituted of a spray system having a blower provided in a hollow structure and a pump below the hollow structure, and a nozzle provided above the hollow structure for ejecting water sucked from the bottom of the hollow structure, and an aeration system for ejecting air sucked from the top of the hollow structure from a nozzle provided under the water level on the hollow structure, and a solar cell power supply unit 3 composed of a power distribution control raft 31 for a power distribution part comprising a power distribution part and a control part in a storage box and solar cell rafts 32 with a solar cell panel and a storage battery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification device suitable for purifying water in a small-scale lake pond such as an agricultural water reservoir.

[0002]

2. Description of the Related Art Around 220,000 ponds for agricultural water are provided nationwide. The use of these agricultural ponds as agricultural water has decreased due to the decrease in paddy fields and the like, becoming a closed basin and the flow of water disappears to form a pool. The depth and shape of the bottom of these ponds are indefinite, and the shallow water depth and narrow area make it easy for the water temperature to rise. Furthermore, these unused ponds are in the suburbs of the city, and domestic sewage flows into them, so they are eutrophication. Under these circumstances, the bottoms of these ponds are in a sludge state, and the waste is suspended due to illegal dumping of the waste, causing the occurrence of water-bloom and the like, which is a serious problem for the destruction of the hydrosphere.

As a method for cleaning these reservoirs and the like, it has been attempted to improve the water quality by pumping pond water using a fountain, ejecting it into the air, exposing it to the air and supplying oxygen.
However, when these methods and devices are used for the above-mentioned agricultural water reservoir, etc., the environment of the reservoir is shallow because the bottom of the reservoir is shallow and the periphery of the reservoir is not maintained, so there is no power source such as electric power, sludge and so on. A normal fountain device should be used for reasons such as blue water or floating debris blocking the water supply port, and it is difficult for general people to secure personnel for maintenance because it is prohibited to enter the pond. You are in a difficult situation.

[0004]

In view of these circumstances, the present invention can be used even in a place without a power source such as an electric power source, and can be used even if there is floating dust, water-bloom, sludge, etc. The purpose is to provide.

A further object of the present invention is to provide a water quality purification device which is capable of moving the water surface instead of being fixed at one location and which has a widened purification range.

Still another object of the present invention is to provide a water purification apparatus which requires less maintenance.

In addition, an object of the present invention is to provide a water purification apparatus in which air from the aeration system is not supplied to the fountain system pump.

[0008]

In order to achieve the above object, the present invention provides a fountain device of a type that floats on water.
Furthermore, a power source using a solar cell floating on the water surface was used as a power source. Furthermore, the fountain device was housed in a cylindrical tank-shaped container, and water was taken in from the bottom.

[0009]

By separating the fountain device and the power source, the degree of freedom of movement of the fountain device is increased, and the capacity of the power source can be changed according to the capacity of the fountain.

[0010]

[Example] 1 of a solar fountain type water purification apparatus according to the present invention
Examples will be described with reference to the drawings. 1 and 2 show
It is a figure showing the whole solar fountain type water quality purification device 1 concerning the present invention, Drawing 1 is a top view and Drawing 2 is a front view seen from the field perpendicular to the water surface.

As shown in this figure, a solar fountain type water purification device 1 is composed of a fountain unit 2 floating on the water surface and a combination type solar cell power source unit 3 consisting of a solar cell and a storage battery. The solar battery power supply unit 3 includes a raft 31 for the power distribution control unit and a plurality of solar battery raft units 32.

Fountain unit 2 and solar battery power supply unit 3
Are fixed to a fixing anchor 5 provided at the bottom of the water with a bending-resistant cable 4 for mooring, each having a length not less than the maximum water depth. A flexible joint can be provided on the cable for storage. The fountain unit 2 can rotate around a fixing anchor 5, and a balancer 6 is provided at an intermediate portion of the mooring cable 4 of the fountain unit 2 so that the fountain unit does not tilt during rotation. The mooring cables 4 of the solar cell power supply unit 3 are provided with four in the example shown in the figure, and are fixed to the fixing anchors 5, respectively.
Each mooring cable 4 is connected by a tension rope 7 so that the solar cell raft portion 32 does not disperse, and a plurality of auxiliary anchors 8 that restrict the movement of the solar cell power supply unit 3 when the water level drops below the cable. Is attached. The fountain unit 2 and the solar cell power supply unit 3 are connected by a power cable 9.

The fountain unit 2 will be described in detail with reference to FIGS. 3 is a front view of the fountain unit 2, FIG. 4 is a top view with its cover removed, FIG. 5 is a longitudinal sectional view, and FIG. 6 is a transverse sectional view taken along the line AA of FIG.

The fountain unit 2 shown in the figure is composed of a cylindrical tank-shaped cylindrical portion 20 made of reinforced plastic or the like which forms a float and has a hollow interior, a leg portion 21 and a cover 22. In the cylindrical portion 20, a plurality (for example, 40) of fountain nozzles 23 radially arranged obliquely upward on the surface of the water supply ring 231 attached to the upper surface of the cylinder, and the substantially center of gravity position of the cylinder. Or a plurality of propulsion nozzles 24 that extend horizontally from the nozzle, and an aeration nozzle 25 that is located at the lower part of the cylinder and extends laterally.
And a recess 26 surrounded by a skirt 28 formed in the lower portion of the cylindrical portion 20, and a strainer 27 made of a mesh body covering the opening of the recess. By providing the fountain nozzle on the water supply ring provided outside the cylindrical portion, the sealing becomes easier and the watertight performance of the hollow body can be improved as compared with the case where the fountain nozzle is directly provided on the cylindrical portion.

The leg portion 21 is attached from the periphery of the cylindrical portion 20 downward, and the column 211 is attached to the cylindrical portion 20 and the bottom plate 2 attached to the lower portion of the column.
12, a ridge 213, and a rudder 214 attached to the column 211. The leg portion 21 has a function of lowering the center of gravity of the fountain unit 2, and has a function of swinging the fountain unit at a slow cycle by a force such as wind and waves.

A bottom plate 29 is provided at the bottom of the cylindrical portion 20 to form a closed space. A blower 202 for aeration is provided at the center of the bottom plate 29. Since the aeration blower is provided at the center of the bottom plate 29, a balancer for maintaining the equilibrium of the device can be eliminated. On the other hand, the submersible pump 201 for the fountain has a bottom plate 29 of the cylindrical portion 20.
The water suction port provided with the basket-shaped strainer 203 is attached downward with a watertight structure, and the water supply pipe 204 connected to the water supply ring 231 having the nozzle 23 is connected to the discharge port. There is. Blower 20
Reference numeral 2 has an intake port that opens into a closed space that communicates with the outside air via a communication pipe 210, and is connected to an exhaust pipe 206 that is connected to the aeration nozzle 25. By opening the intake port of the blower above the closed space, even when water enters through the communication pipe 210, the inconvenience of water directly entering the blower does not occur.

A lower opening of an air vent pipe 207, which penetrates the inside of the cylindrical portion 20 and escapes to the upper side, is located near the upper portion of the recess 26. The submersible pump 201 discharges the gas that has entered the recess 26. Prevents the vehicle from being driven under no load. The middle part of the air vent pipe 207 is divided into a plurality of parts, and a water level detector 208 is provided in contact with one of the air vent pipes, and a water level detecting float 209 is inserted in the air vent pipe to lower the water level. When the fountain unit 2 reaches the bottom of the pond, the operation of this device is stopped. Further, a communication pipe 210 that communicates the inside of the cylindrical portion 20 with the outside air is provided to balance the pressure difference between the inside and the outside caused by the temperature change, and also has a function as an intake port for air for aeration. Also, the cylindrical portion 2
A float 205 made of, for example, styrofoam is attached to the ceiling inside the 0 to prevent the fountain unit from sinking even in the event of flooding.

The tips of the air vent pipe 207 and the communication pipe 210 are folded back in an inverted U shape to prevent rainwater and the like from entering the pipe line. In the middle of the water supply pipe to the water supply ring 231, the propulsion nozzle 2 is provided through a plurality of valves 241.
4 is connected so that the propulsive force can be changed by opening / closing the valve 241 as needed. By alternately using the propulsion nozzles on a daily basis, for example, problems such as kinking of the underwater cable can be solved.

The bottom plate 212 of the leg portion 21 has an opening 215 near the center and an anchor connection hook 2 on the bottom surface near the center.
16 are provided.

The fountain unit 2 having the above-mentioned structure receives electric power from the separately provided solar battery power source unit 3 and operates the submersible pump 201 and the blower 202. The submersible pump 201 ejects water pumped from below the cylindrical portion 20 from a fountain nozzle 23 to circulate water in a reservoir. The water ejected from the nozzle 23 removes the heat of vaporization from the water when it comes into contact with the air and evaporates, so that it lowers the temperature of the water surface and suppresses the generation of water-bloom, and hits the water surface with water droplets. It also works to suppress the generation. Further, by blowing the water into the air, the water is sterilized by ultraviolet rays, and the effect of water quality purification can be improved. In addition, since the water pressurized by the pump passes through the nozzle portion, the phytoplankton cells are destroyed and the phytoplankton can be reduced.

Since the blower 202 ejects air into the water from the aeration nozzle 25, the blower 202 stirs the water near the surface layer where the water-bloom is generated and supplies oxygen to the water to contribute to the purification of water quality. Further, by propelling the aeration of the blower into the water in a diagonally rearward direction including the horizontal direction, a propulsive force is generated, and the fountain unit 2 rotates at a slow speed around the fixing anchor 5, so that the device operates Can be expanded, and the function of purification can be further enhanced by stirring the water surface and water.

Further, since a cylinder is provided around the aeration nozzle 25, the flow of air from the nozzle causes a flow of water to be drawn out from the recessed portion 26, and the propulsive force can be added. Further, since the aeration nozzle 25 is provided above the water intake port of the submersible pump, it is possible to prevent the occurrence of a cavity phenomenon in which minute bubbles are generated on the surface of the vane of the submersible pump, and thus the life of the pump is improved. Can be long.

The strainer 27 that covers the opening of the recess 26 of the cylindrical portion 20 similarly rocks in any direction when the cylindrical portion 20 rocks, causing the water stains and floating dust adhering to the mesh to move. It is scraped off and has the function of self-cleaning the strainer. Furthermore, since the fountain unit has a cylindrical shape, extra protrusions are eliminated, the catch of floating dust is prevented, and the safety when a person such as a swimmer collides is maintained. Further, when it becomes necessary to pull up the fountain unit 2 to the land, air is inserted into the recess 26 surrounded by the skirt 28 after the air vent pipe 207 is closed, whereby the recess 26 is formed.
The inside can be made to act as a float so that the unit can be easily pulled up.

The solar cell power supply unit will be described below. As shown in FIGS. 1 and 2, the solar cell power supply unit 3 is configured by connecting a power distribution control unit 31 and a plurality of solar cell rafts 32 to each other. The power distribution control unit 31 is mounted on a raft having substantially the same shape as the solar battery raft, monitors the power generation capacity of the solar battery of the solar battery raft 32 to control the charging of the storage battery, and the fountain from the solar battery raft 32. Control the power supply to the unit 2. Since the control unit including electronic components is provided on the solar cell power supply unit side where the water of the fountain is less likely to splash, the influence of the fountain can be avoided and the reliability can be improved.

The structure of the solar cell raft 32 will be described with reference to FIGS. FIG. 7 is a plan view of the solar cell raft 32,
8 is a front view thereof, FIG. 9 is a side view thereof, and FIG. 10 is a vertical cross-sectional view taken along line 8B-B of FIG. Solar battery raft 32
Is a frame 320 constructed by assembling channels made of steel material, a float 321 fixed to the lower part near the center of the frame, a storage box 322 supported by the float, and a storage battery stored in the storage box. 324 and a solar cell panel 326 provided on the top of the solar cell raft. The upper opening of the storage box is opened and closed in a watertight manner by a storage box lid 323 via normal packing. The housing box lid 323 is provided with a watertight electrical connector, and
The electrode of the storage battery 324 accommodated in the storage battery 324 is drawn to the outside, and the storage battery 324 is disposed slightly elevated from the bottom of the storage box 322. The storage battery 324 is floatingly charged by the output power of the solar cell panel 326. For example, a raft cover 325 having two mountain shapes is provided on the upper surface of the raft, and a solar cell panel 326 is installed on one side of the mountain shape with an elevation angle of about 15 to 30 degrees toward the sun. The other surface of the Yamagata works as a reflector. This reflector serves to reflect the diffused light at the time of cloudy weather to the solar cell panel arranged later to enhance the power generation capacity, and also to prevent the solar cell raft 32 from tilting by changing the flow of the wind blown from the rear. I also have Raft 32
A plurality of bird protectors are provided at the top of the mountain shape of 5 to prevent the solar cell panel from being polluted by bird droppings.

A bumper 328 made of an elastic material such as hard rubber is provided on the periphery of the upper end of the frame 320 to prevent the adjacent solar cell raft from colliding and being damaged. Further, the raft connection hooks 3 are provided at the four corners of the frame 320.
29 is provided so that the solar cell rafts can be freely connected to each other, and the frame 320 or the float 321 is provided with the anchor connection hooks 330 of the solar cell power supply unit 3 configured by combining the rafts. It prevents movement. By disposing these anchors in a dispersed manner, the solar cell raft can always be directed to the sun side (south side) even if the water level changes.

The raft 31 for the power distribution control unit has substantially the same structure as the raft 32 for the solar cell, and it is apparent that the raft cover 325 is a flat plate and is housed in the housing box 322. As shown in FIG. 11, the electric device is a power distribution control device including a battery charge / discharge control device 311, an inverter 312, a control device stabilizing power supply 313, and a control device 324. Is different. The control device 314 has a sequencer and the like, and performs control described later. The power distribution control unit includes the cable 9 that connects the storage battery 324 and the solar battery panel 326 provided on the solar battery raft 32, and the fountain pump 20 of the fountain unit 2.
A terminal block to which a cable 9 for connecting 1 and the aeration pump 202 is connected and a breaker are arranged. These devices are distributed and placed on a table slightly higher than the bottom of the container. The output of the solar cell 326 is supplied to the storage battery 324 via the battery charging / discharging device 311.
The electric power stored in the storage battery 324 is supplied to the fountain unit 2 via the battery charging / discharging device 311.

The bottom of the housing 322 of the power distribution control unit is made of a material having good thermal conductivity, and the inverter 312 is thermally connected to this bottom, which can be useful for cooling the inverter 312 that generates a large amount of heat. . Moreover, the output of the solar cell power supply unit can be increased by configuring the raft cover of the power distribution control unit raft 31 with a solar cell panel as in the case of the solar cell raft.

The solar cell raft 32 is, for example, as shown in FIG. 1, a raft 31 for a power distribution control unit is arranged in the center, and six solar cell rafts 32 are arranged in a cross shape. Adjacent rafts are connected and arranged by engaging with each other using raft connection hooks 329, and a raft for power distribution control unit 31 is provided at the center.
Is arranged. The solar battery raft 32 is connected to the power distribution control unit 31 by the cable 9, and the power supply amount to the fountain unit 2 is controlled according to the power generation amount of the solar battery and the charge amount of the storage battery.

The amount of sunshine, the amount of charge in the storage battery and the operation of the pump will be described with reference to FIG. (A) shows the change over time in the amount of sunlight, (b) shows the operating curve of the pump,
(C) has shown the time transition of the charge amount of a storage battery, respectively. Solar cells generate electric power proportional to the amount of sunlight.
The amount of sunlight changes intricately with time.

When the amount of sunlight exceeds a predetermined value (C), charging of the storage battery 322 is started, and the amount of charge of the storage battery starts to increase.

When the amount of sunshine exceeds a predetermined value (A) and a sufficient amount of power is obtained to drive the pumps 201 and 202 and charge the storage battery, the pump is started and the fountain unit 2 is operated with the water quality. Start purification work. At this time, the storage battery is continuously charged with the surplus generated power, and after being 100% charged, it is floatingly charged.

When the amount of sunshine decreases and the amount of power generation falls below the amount of power generation (B) commensurate with the amount of power consumed by the pump, the insufficient power is supplied from the storage battery to continue the operation of the pump. The amount of charge in the storage battery begins to decrease as it discharges.
In this case, the amount of power (a) that is insufficient with the amount of power from the solar cell is equal to the amount of discharge power (a) supplied from the storage battery. During this time, the charging / discharging control means 315 determines that the discharging time T ₁
Is monitored within a predetermined time. When the amount of sunshine exceeds (B) within a predetermined time, charging of the storage battery is started and operation of the pump is continued.

When the amount of sunshine decreases again and the amount of power generation falls below the amount of power generation (B) commensurate with the amount of power consumed by the pump, the insufficient power is supplied from the storage battery as in the above case. Continue driving. The amount of charge in the storage battery begins to decrease as it discharges. Charge / discharge control means 315
Monitors whether or not the discharge time is within a predetermined time, and when the discharge time exceeds the predetermined time T ₂ , the pump operation is stopped and the generated power is used for charging the storage battery.

When the amount of sunshine exceeds a predetermined value (A) and a power generation amount exceeding the power consumption of the pump is obtained, the pump operation is restarted. After that, when the amount of sunlight is reduced to a predetermined value (B) or less and the generated power becomes less than the power consumption of the pump, the insufficient power is supplied from the storage battery. Further, even within the predetermined time T2, the amount of sunshine is reduced to a predetermined value (C).
If the following occurs and the storage battery cannot be charged, the pump operation is stopped.

In the above example, the operation of the pump is controlled based on the amount of sunlight (the amount of power generation), but the operation of the pump can be controlled by detecting the charge amount of the storage battery.

Furthermore, during cloudy weather, the pump can be intermittently operated by the electric power from the storage battery. Alternatively, one of the pumps may be selected to operate with reduced power consumption.

[0038]

As described above, according to the present invention, the fountain unit includes both the purifying means by the fountain and the purifying means by the aeration, and the fountain unit itself is self-propelled by utilizing the purifying means by the aeration. Since it is also possible to increase the purification capacity, it is possible to purify a wide range with one device.

Since the electric power for driving the fountain unit is supplied from the solar battery power supply unit floating on the surface of the water, it is not necessary to install a new power supply even when it is used in a place without a power supply, and maintenance is required for a long period of time. The purification device can be operated without the need for.

Since the solar battery raft constituting the power supply unit is divided into small units, the size of the power supply unit can be freely adjusted according to the power consumption of the fountain unit, and the fountain unit can be operated for a long time. When you need it, increase the number of rafts
It can be handled easily.

Since the fountain unit is formed in a cylindrical shape and has legs at the bottom, it easily rocks due to waves or wind, and the strainer that covers the recess opening provided at the bottom of the fountain unit automatically Since the strainer can be cleaned in a long time, the strainer does not become clogged for a long period of time, and maintenance work can be omitted even when the strainer is used in a place where water sprouts and dust are floating.

Since the aeration nozzle is provided above the water intake port of the submersible pump, bubbles for aeration are not supplied to the pump, and the vane of the submersible pump is less likely to cause a cavity phenomenon, thereby extending the life of the pump. You can

[Brief description of drawings]

FIG. 1 is a plan view showing an overall configuration of a fountain aeration type water purification apparatus according to the present invention.

FIG. 2 is a front view showing the overall configuration of a fountain aeration type water purification device according to the present invention.

FIG. 3 is a front view showing the shape of a fountain unit.

FIG. 4 is a top view showing the shape of a fountain unit.

FIG. 5 is a vertical sectional view showing the structure of a fountain unit.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a top view of a solar cell raft.

FIG. 8 is a front view of a solar cell raft.

FIG. 9 is a side view of the solar cell raft.

10 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 11 is a block diagram showing the concept of a power distribution control unit.

FIG. 12 is a view for explaining the operation of the purification device according to the present invention.

[Explanation of symbols]

 1 Fountain aeration type water purification device 2 Fountain unit 3 Solar cell power supply unit 4 Storage cable 5 Fixed anchor 6 Balancer 7 Tension rope 8 Auxiliary anchor 9 Power cable 20 Cylindrical part 21 Leg part 22 Cover 23 Fountain nozzle 24 Propulsion nozzle 25 Aeration Nozzle 26 Recess 27 Strainer 28 Skirt 29 Bottom plate 31 Distribution control unit (Raft for distribution control unit) 32 Solar battery raft 201 Submersible pump 202 Blower 203 Basket strainer 204 Water supply pipe 205 Float 206 Exhaust pipe 207 Air vent pipe 208 Water level detector 209 Float 210 Communication pipe 211 Strut 212 Bottom plate 213 Stone butt 214 Rudder 216 Anchor connection hook 231 Water supply ring 241 Valve 311 Battery charge / discharge control device 312 Inverter 313 Control device stabilizing power supply 314 Control device 20 channel structure 321 float 322 containing box 323 storage box lid 324 battery 325 Ikadakutsugae 326 solar cell 327 Bird protector 328 Bumper 329 raft connection hooks 330 anchor connection hooks

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Inoue 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Within the Industrial Equipment Division, Hitachi, Ltd. (72) Inventor Kazuo Kobayashi 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Stocks Hitachi Industrial Products Division

Claims (25)

[Claims] 1. A fountain-type water purification apparatus provided with a blower inside a hollow body and a pump provided below the hollow body, wherein water sucked up from the lower part of the hollow body is discharged from a nozzle provided above the hollow body. A fountain system driven by the pump, which is adapted to eject, and an aeration system driven by the blower, which is adapted to eject intake air from the upper part of the hollow body from a nozzle provided below the water surface of the hollow body, are provided. A fountain-type water purification device characterized in that 2. The fountain-type water purification device according to claim 1, wherein the hollow body has a cylindrical tank shape. 3. The fountain type water purification apparatus according to claim 1 or 2, wherein a recess surrounded by a skirt is provided in a lower portion of the hollow body. 4. The fountain-type water purification device according to claim 3, wherein the water inlet of the pump is provided in a recess surrounded by the skirt. 5. The fountain type water purification apparatus according to claim 2 or 3, wherein the opening of the skirt portion is covered with a mesh. 6. The fountain-type water purification apparatus according to claim 1, wherein the water intake port of the fountain system pump is provided below the aeration system nozzle. 7. The fountain type water purification apparatus according to claim 1, wherein a leg portion is attached to a lower portion of the hollow body. 8. The fountain type water purification apparatus according to claim 1, wherein the hollow body is connected to a fixing anchor via a cable for mooring. 9. The fountain type water purification apparatus according to claim 1, wherein a plurality of aeration type aeration nozzles are provided. 10. A solar cell power supply device comprising a power distribution control unit raft having a power distribution unit and a control unit inside a housing box, and a solar battery raft having a storage battery inside the housing box and a solar cell panel above. 11. The solar cell power supply device according to claim 10, wherein a reflector is provided on the back surface of the solar cell panel. 12. The solar battery power supply device according to claim 10, wherein a plurality of solar battery rafts are combined. 13. A fountain aeration type water purification device comprising a fountain unit and a solar battery power supply unit. 14. A fountain aeration type water purification device comprising a fountain unit having a blower inside the hollow body and a pump provided below the hollow body, and a solar cell power supply unit. 15. The fountain unit has a blower inside the hollow body and a pump below the hollow body, so that water sucked from the lower part of the hollow body is ejected from a fountain nozzle provided above the hollow body. The aeration system driven by the pump, and the aeration system driven by the blower configured to cause intake air from the upper part of the hollow body to be ejected from an aeration nozzle provided below the water surface of the hollow body. 14. A fountain aeration-type water purification device according to 14. 16. The fountain aeration-type water purification device according to claim 15, wherein the hollow body has a cylindrical tank shape. 17. The fountain aeration type water purification device according to claim 15 or 16, wherein a concave portion surrounded by a skirt is provided in the lower portion of the hollow body. 18. The fountain aeration type water purification apparatus according to claim 17, wherein the water intake port of the pump is provided in a recess surrounded by the skirt. 19. The fountain aeration-type water purification device according to claim 17, wherein the opening of the recess is covered with a mesh. 20. The fountain aeration-type water purification device according to claim 14, wherein legs are attached to a lower portion of the hollow body. 21. The fountain aeration type water purification apparatus according to claim 14, wherein the hollow body is connected to a fixing anchor via a cable for storage. 22. The fountain aeration-type water purification apparatus according to claim 15, wherein a plurality of aeration-type aeration nozzles are provided laterally. 23. The solar battery power supply unit comprises a power distribution control unit raft having a power distribution unit and a control unit inside a hollow body, and a solar battery raft including a solar cell panel and a storage battery. 22. A fountain aeration-type water purification device according to any one of 22. 24. The fountain aeration-type water purification device according to claim 15, wherein the solar cell panel is provided on an upper portion of the raft of the solar cell. 25. The fountain aeration-type water purification apparatus according to claim 15, wherein the storage battery is provided by being lifted from the bottom of the storage box of the solar cell raft.