Water purification system

Abstract

To provide a water purification system capable of appropriately improving the water quality of a water area in which solar panels are installed on water.SOLUTION: A water purification system 1 installed in a water area W includes a photovoltaic power generation panel 2, a fluid transport device 3 and an LED projection device 4 driven by the electricity generated by the photovoltaic power generation panel 2, and a water quality monitoring device 5 that monitors the water quality of the water area W. The water purification system 1 includes control means that controls the driving of the fluid transport device 3 and the LED projection device 4 based on the water quality monitored by the water quality monitoring device 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a water purification system installed in bodies of water such as lakes, ponds, shallow seas, and brackish waters, and more particularly to a water purification system equipped with solar power generation panels. [Background technology]

[0002] Solar power generation is becoming more widespread as a means of promoting the spread and expansion of renewable energy. In recent years, as the number of locations suitable for solar power generation facilities has decreased, the installation environments for solar power generation facilities have expanded to include sloping land, farmland, and even on water. In particular, floating solar power generation is becoming more popular due to the advantages it offers compared to land-based solar power generation, such as greater power generation due to fewer obstructions, no need for large-scale land development, and the ability to prevent water evaporation.

[0003] However, in shallow lakes and ponds, reduced sunlight can lead to a deterioration in the water quality of the water area where solar panels are installed. This is because reduced light in shallow lakes and ponds reduces the number of competing aquatic plants, reduces nutrient use, and increases the growth of phytoplankton.

[0004] Patent Document 1 describes a system in which an air pump is driven by electricity generated by a solar panel, and air is dispersed from air bubble nozzles at the bottom of the water to supply oxygen to the water in lakes, harbors, dams, etc., and purify the water.

[0005] Patent Document 2 describes a bubbling device that mixes seawater and air and supplies the mixture to an injection nozzle, instead of the above air pump.

[0006] Patent Document 3 describes a method in which a holding tube extending in the vertical direction is supported on a float floating on the water surface, sunlight is concentrated by a concentrating lens attached to the top of the holding tube, and light is projected into the deep water from a diffusing lens attached to the bottom end of the holding tube, thereby purifying the deep water. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2008-187987 A [Patent Document 2] JP 2004-194528 A [Patent Document 3] Japanese Patent Application Publication No. 9-314181 Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the present invention is to provide a water purification system that can appropriately improve the water quality of a body of water on which solar power generation panels are installed. [Means for solving the problem]

[0009] The water purification system of the present invention is a water purification system installed in a water area, and includes a water-mounted solar power generation panel, a fluid transport device and an LED floodlight device driven by the power generated by the solar power generation panel, and a water quality monitoring device that monitors the water quality of the water area. Equipped with.

[0010] The water purification system according to one aspect of the present invention includes a control means for controlling the driving of the fluid transport device and the LED floodlight device based on the water quality monitored by the water quality monitoring device.

[0011] In one aspect of the present invention, the fluid transport device is a pump that transports at least one selected from the group consisting of air, water, and sludge.

[0012] In one aspect of the present invention, the fluid transport device includes an air pump and an air bubble ejection nozzle that ejects air discharged from the air pump into water as fine air bubbles.

[0013] In one aspect of the present invention, the LED floodlight device includes a cleaning means for cleaning the light-projecting surface.

[0014] In one aspect of the present invention, the water quality monitoring device measures at least one water quality parameter selected from the group consisting of pH, water temperature, turbidity, dissolved oxygen concentration, and hardness.

[0015] In one aspect of the present invention, the floating solar power generation panel has an expandable and contractible structure that can be in a folded state and an unfolded state.

[0016] In one aspect of the present invention, the water purification system includes a weather sensor, and the floating solar power generation panel is folded or unfolded depending on the weather detected by the weather sensor. Effect of the Invention

[0017] The water purification system of the present invention can obtain electricity by generating power using a solar power generation panel installed in the water area. In the water purification system of the present invention, this electricity can be used to drive a fluid transport device and an LED floodlight device, and the water quality of the water area can be purified. The water purification system of the present invention is equipped with a water quality monitoring device that monitors the water quality of the water area, so that the water quality can be monitored.

[0018] In one aspect of the present invention, the fluid transport device and the LED floodlight device are driven based on the water quality monitored by the water quality monitoring device, so that water purification processing can be performed according to the water quality of the water area.

[0019] In one aspect of the present invention, the solar power generation panel can be in a folded state and an unfolded state, so that by folding the solar power generation panel during bad weather or the like, damage to the solar power generation panel can be prevented. [Brief description of the drawings]

[0020] [Figure 1] 1 is a side view showing an installation state of a water purification system according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a perspective view of a body of water equipped with solar panels. [Diagram 3] FIG. 2 is an explanatory diagram of folding the solar power generation panel. [Figure 4] FIG. 2 is an explanatory diagram of folding the solar power generation panel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment will be described with reference to the drawings.

[0022] The water quality purification system 1 of this embodiment is installed in a water body W, and as shown in Figure 1, is equipped with a floating solar power generation panel (hereinafter sometimes referred to as a solar power generation panel) 2, a fluid transport device 3 and an LED floodlight device 4 driven by electricity generated by the solar power generation panel 2, and a water quality monitoring device 5 that monitors the water quality of the water body.

[0023] Examples of the water area W include lakes, marshes, ponds, shallow seas, brackish water areas, rivers, etc., but lakes, marshes, ponds, etc., where the water tends to stagnate, are preferable. In Figures 1 and 2, a lake is shown as the water area W.

[0024] In this embodiment, the water purification system 1 includes a float 6, and a solar panel 2 is installed on the float 6 via a support member 7. An air pump 8 constituting a fluid transport device 3 is installed above the float 6 and below the solar panel 2, and a machine box 9 incorporating various devices is also installed.

[0025] The fluid transport device 3 is an air transport device in this embodiment, and includes the air pump 8, an air diffuser 10 as an air bubble ejection nozzle to which air is supplied from the air pump 8 via a tube 12, and the like. The air diffuser 10 is installed on the bottom B of the lake or marsh.

[0026] The LED floodlight device 4 is suspended from the float 6 by a cable 11, and is supplied with power from a drive circuit in the machine box 9 via a power cable (not shown) attached to the cable 11.

[0027] The LED floodlight device 4 includes a watertight sealed box 4a with at least the bottom surface made of a light-transmitting plate, an LED light emitter (not shown) that is arranged in the sealed box 4a and projects light to the surroundings through the light-transmitting plate, etc. The LED light emitter preferably emits light with a wavelength of 380 nm or more, particularly 400 nm or more, and 1000 nm or less, particularly 700 nm or less.

[0028] The LED floodlight device 4 is preferably disposed above the air diffuser pipe 10. When disposed in this manner, air bubbles diffused from the air diffuser pipe 10 and rising in the water come into contact with the sealed box 4a, which has the effect of preventing foreign matter from adhering to the sealed box 4a and removing the adhering foreign matter. However, the LED floodlight device 4 may be disposed at a position that is not above the air diffuser pipe 10. The LED floodlight device 4 is preferably disposed at a height of 0.5 m or more, particularly 1 m or more, and 3 m or less, particularly 2 m or less, from the water bottom.

[0029] Although not shown in the drawings, in the present invention, a wiper for wiping the outer surface of the transparent plate of the sealed box 4a may be provided. Also, a fresh water jet for jetting fresh water toward the outer surface of the transparent plate may be provided. This can prevent foreign matter from adhering to the outer surface of the transparent plate and can remove the adhering foreign matter.

[0030] In addition to the water quality monitoring device 5, a battery charged with power generated by the solar panel 2, a drive circuit for the air pump 8, and a drive circuit for the LED floodlight device 4 are installed in the machine box 9, and the air pump 8 and the LED floodlight device 4 are driven by power from the battery. Also installed in the machine box 9 is the water quality monitoring device 5 for monitoring the water quality of the water area W. The water quality is exemplified by at least one selected from the group of water quality items including pH, water temperature, turbidity, dissolved oxygen concentration, and hardness. The water quality monitoring device 5 is equipped with a probe (not shown) for measuring the water quality item, and at least the tip of the probe is inserted into the water of the water area W.

[0031] In this embodiment, a control circuit is provided for controlling the operation of the LED floodlight device 4 and the air pump 8 as a fluid transport device based on water quality data monitored by the water quality monitoring device 5, and the control circuit sends an operation signal and an operation stop signal to the drive circuit of the LED floodlight device 4 and the drive circuit of the air pump 8, respectively.

[0032] 2 shows an example in which the water purification system 1 and a solar power generation panel 2 are installed in a water area W. The solar power generation panel 2 is supported by the float 6 and placed above the water surface.

[0033] A large number of solar panels 2 are arranged on the surface of a body of water W with almost no gaps between them.

[0034] A water purification system 1 is disposed in a portion of the array of solar panels 2. In Fig. 2, the water purification systems 1 are disposed near the center and at the ends of the array of solar panels 2. Note that more or fewer water purification systems 1 may be disposed depending on the number of solar panels 2 and the arrangement.

[0035] Since most of the water surface of the water area W is covered by the solar power generation panels 2, there is a risk that the water quality of the water area W will deteriorate due to insufficient sunlight on the bottom of the water or an insufficient concentration of dissolved oxygen in the water area W.

[0036] Therefore, when the water quality detected by the water quality monitoring device 5 deviates from the standard range, the air pump 8 and LED floodlight device 4 of the water purification system 1 are operated to aerate and irradiate the water in the water area W. This stimulates the activity of aquatic plants and aerobic microorganisms, improving the water quality. When the water quality improves to within the standard range, the operation of the air pump 8 and LED floodlight device 4 is stopped.

[0037] It is also possible to provide a number of different reference ranges, with the amount of aeration and the amount of light projected being increased as the water quality becomes worse.

[0038] [Another embodiment] In the above embodiment, the fluid transport device 3 may be an air transport device, or the fluid transport device may transport at least one selected from the group consisting of air, water, and sludge. For example, water and air may be transported, and air-containing water may be sprayed from the air diffuser 10. In addition, sludge at the bottom of the water may be pumped up by a sludge pump and sprayed from a sludge spray nozzle, improving the water quality by a biological sludge treatment method.

[0039] In the present invention, the solar panel 2 may have an expandable / contractable structure that can be in a folded state and an unfolded state. Figures 3 and 4 show an example of this.

[0040] The solar panel 2A in Fig. 3 can be folded in two or laid out flat as shown in Fig. 1. Although not shown in the drawings, the solar panel 2A may be folded in three or more stages.

[0041] The solar power generation panel 2B in Fig. 4 can have a rollable structure made of soft synthetic resin, etc. That is, the solar power generation panel 2B can be in a rolled-up folded state as shown in Fig. 4 and in an unfolded state as shown in Fig. 1.

[0042] Other configurations in FIGS. 3 and 4 are similar to those in FIG. 1, and the same reference numerals denote the same parts.

[0043] In the case of the solar power generation panels 2A, 2B of Figs. 3 and 4, damage to the solar power generation panels 2A, 2B can be prevented by folding the solar power generation panels 2A, 2B in bad weather.

[0044] In the present invention, a weather sensor may be installed so that the solar power generation panels are folded up during inclement weather and deployed at other times.

[0045] The weather sensor may be, but is not limited to, one that detects raindrops, snowflakes, or ice particles striking the surface of the solar panel.

[0046] The float 6 supporting the solar power generation panel 2 may also have an expandable and contractible structure that can be in a folded state and an unfolded state. This allows the float 6 to be folded in accordance with the solar power generation panel 2.

[0047] Examples of materials that can be used for the float 6 include polystyrene resins, polyolefin resins, polyester resins, acrylic resins, polycarbonate resins, thermoplastic elastomers, and urethane resins. Among these, polyolefin resins such as polyethylene resins and polypropylene resins are preferred because they have excellent mechanical strength, flexibility, and toughness.

[0048] The shape of the float 6 (in plan view) may be, for example, a triangular shape, a rectangular shape, a pentagonal shape, a hexagonal shape, or an octagonal shape. Among these, the rectangular shape, the pentagonal shape, and the hexagonal shape are preferable because they are excellent in manufacturing stability of the float 6. In a float 6 having such a shape, the float side surface is inclined, so that the generation of water splashes caused by waves colliding with the side surface can be suppressed. Therefore, it is possible to suppress the corrosion of components and electric leakage caused by water splashes, and it is possible to further improve the reliability of the device and reduce costs by suppressing maintenance and part replacement.

[0049] The above-described embodiments are merely examples of the present invention, and the present invention may be embodied in other forms than those described above. [Explanation of symbols]

[0050] 1. Water purification system 2,2A,2B Solar panels 3 Fluid transport device 4 LED floodlights 5. Water quality monitoring equipment 6. Float 7 Support member 8. Air Pump 9 Machine Box 10 Diffusion tube 11 Cable 12 Tubes

Claims

1. A water purification system installed in a water area, Floating solar panels and A fluid transport device and an LED floodlight device driven by the power generated by the solar power generation panel; A water quality monitoring device that monitors the water quality of the water area; Equipped with a water purification system.

2. The water purification system according to claim 1, further comprising a control means for controlling the operation of the fluid transport device and the LED floodlight device based on the water quality monitored by the water quality monitoring device.

3. 3. The water purification system according to claim 1, wherein the fluid transport device is a pump for transporting at least one fluid selected from the group consisting of air, water, and sludge.

4. 3. The water purification system according to claim 1, wherein the fluid transport device comprises an air pump and an air bubble ejection nozzle that ejects air discharged from the air pump into water as fine air bubbles.

5. 3. The water purification system according to claim 1, wherein the LED floodlight device is provided with a cleaning means for cleaning a light-projecting surface.

6. 3. The water purification system according to claim 1, wherein the water quality monitoring device measures at least one water quality parameter selected from the group consisting of pH, water temperature, turbidity, dissolved oxygen concentration, and hardness.

7. 3. The water purification system according to claim 1 or 2, wherein the floating solar power generation panel has an expandable and contractible structure that can be in a folded state and an unfolded state.

8. The water purification system according to claim 7, further comprising a weather sensor, and the floating solar power generation panel is folded or unfolded depending on the weather detected by the weather sensor.

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