System of cleaning and snow removing for a solar module and ecofriendly composite for the same

Abstract

The present invention discloses a cleaning and snow removal system for a photovoltaic module and an eco-friendly composition, characterized by comprising, as a cleaning solution, an oxygen generating composition composed of potassium superoxide (KO2), perfluorodecalin (C10F18), sodium percarbonate (2Na2CO3·3H2O2), and hydrogen peroxide (H2O2), wherein the content of perfluorodecalin (C10F18) is 0.5 to 10 wt% relative to the total weight of the oxygen generating composition, and as a snow removal solution, 2 to 10 wt% potassium formate, 2 to 10 wt% potassium acetate, 0.5 to 2 wt% urea, 3 to 15 wt% propylene glycol, 0.01 to 0.02 wt% potassium hydroxide, 0.2 to 0.5 wt% sodium metasilicate, and 0.15 to 2.0 wt% tripotassium phosphate.

Description

Technology Field

[0001] The present invention relates to a cleaning and snow removal system for solar modules and an eco-friendly composition for the same, and more specifically, to a cleaning and snow removal system for solar modules having a structure capable of spraying a cleaning solution or a snow removal solution onto the surface of a solar panel after purification treatment, and an eco-friendly composition for the same. Background Technology

[0002] In general, in closed bodies of water such as rivers, ponds, lakes, dams, and reservoirs where water flow is not active and remains stagnant, surface sewage, domestic sewage, and industrial and livestock wastewater are continuously flowing in, causing the concentration of pollutants in the water to increase.

[0003] Nutrients among pollutants, including nitrogen compounds and phosphates, promote the growth and proliferation of microorganisms that cause the decomposition of organic matter, thereby causing eutrophication in freshwater.

[0004] Eutrophication refers to a phenomenon in which the decomposition of organic matter by microorganisms leads to an excess of nutrients, such as nitrogen and phosphorus, in freshwater, resulting in the abnormal proliferation of algae. This eutrophication causes serious damage that destroys the ecosystem of lakes and water bodies, including reducing water turbidity, generating foul odors from decaying matter, and, in severe cases, causing mass fish mortality. Furthermore, in closed bodies of water that are stagnant with little flow, oxygen is not supplied to the lower layers, leading to severe water pollution starting from the bottom.

[0005] Therefore, in closed water bodies, it is important to maintain a balance so that the amount of nutrients, such as nitrogen and phosphorus, contained in the aquatic ecosystem does not exceed the self-purification capacity, and it is very important to increase the dissolved oxygen of the water as much as possible to ensure that the purification of settling organic matter and heavy metals proceeds smoothly.

[0006] However, despite the increase in upstream wastewater treatment facilities, many dams, reservoirs, and lakes in Korea are still receiving large amounts of pollutants, and the water quality deterioration is gradually worsening due to the formation of density layers resulting from long-term water retention.

[0007] Among the major conventional water quality improvement methods, direct purification methods using physical means include coagulation-sedimentation, direct sedimentation, filtration, aeration, circulation, water diversion, and phosphorus recovery technology, while biological methods include direct oxidation, vegetation purification, microbial agents, and enzymatic fixation; however, as previously discussed, there are limitations to lake purification due to short-term and localized effects.

[0008] With the development of science and technology, various types of chemical substances are being mass-produced and used, and environmental pollution caused by synthetic chemicals is emerging as a social problem. In particular, water pollution caused by non-biodegradable substances that cannot be treated by conventional methods is very serious. There is a problem in that harmful non-biodegradable pollutants are difficult to treat using only conventional physical or biological methods.

[0009] In addition to environmental pollution problems in closed bodies of water where water flow is inactive and stagnant, water pollution caused by initial rainfall is also causing serious environmental issues.

[0010] In areas paved with concrete or asphalt, rainwater infiltration and retention functions are reduced during rainfall, causing highly contaminated substances to flow into nearby water systems, such as sewers or rivers, due to the initial rainfall, thereby adversely affecting the water system.

[0011] Nonpoint pollution refers to pollution originating from unspecified emission routes, such as roads, farmlands, and construction sites. Examples of nonpoint pollutants include fine tire dust accumulated on roads, nitrogen oxides (NOx)—a major contributor to fine dust—pesticide residues remaining in agricultural land, and dust generated at construction sites. These pollutants are washed away by rainwater during rainfall, becoming a primary cause of river pollution. The problem with nonpoint pollution is that pollutants originating from unspecified locations flow directly into rivers without any special filtration process during rain, leading to rapid water contamination. Water pollution is far more serious than other forms of pollution because it does not merely result in turbid water; it can cause mass fish kills, destroy animal and plant habitats, and disrupt the entire ecosystem.

[0012] Recently, there has been increasing interest in non-point source pollution reduction devices, such as infiltration facilities, retention facilities, and filtration facilities, to treat non-point source pollution caused by initial rainfall.

[0013] Infiltration facilities or retention facilities, referred to as natural non-point source pollution reduction technologies, are effective in terms of installation but have the disadvantage of occupying a large amount of land. Therefore, filtration facilities, referred to as filtration-type non-point source pollution treatment facilities, are frequently installed along with natural non-point source reduction facilities. For example, Patent Document 1 discloses a non-point source pollution filtration-type treatment device characterized by multiple fiber unit filters being arranged in a continuous manner adjacent to each other inside a debris collection pipe, and contaminated water flowing through the debris collection pipe to filter out pollutants and exit through the drainage holes of the debris collection pipe to be discharged outside the sedimentation tank.

[0014] Filtration-type non-point source pollution treatment facilities have the advantages of requiring less site area and faster treatment speed compared to natural types, but they have the disadvantage of requiring maintenance such as regularly cleaning and replacing filter media.

[0015] Furthermore, conventional filter media have a weakness in that they merely filter out pollutant particles, so they fail to decompose harmful substances such as nitrogen oxides (NOx) and sulfur oxides (SOx), which are the main culprits of fine dust, allowing them to pass through unharmed.

[0016] Water, such as rainwater or river water collected in a storage facility as described above, can be used as a cleaning liquid for solar panels. For example, Patent Document 2 discloses a cleaning and remote control system for a solar power generation module that cleans and remotely controls the solar power generation module to improve the power generation efficiency of the solar power generation module.

[0017] However, conventional cleaning systems for solar power generation have a vulnerability in that they fail to treat organic contaminants or various foreign substances remaining in the cleaning liquid and spray them directly onto the surface of solar panels (power generation modules) through the spray nozzles, which can lead to clogged nozzles, stains on the surface of the solar panels, or physical and chemical damage to the surface.

[0018] In addition, since the cleaning liquid contains harmful substances such as nitrogen oxides (NOx) and sulfur oxides (SOx), as well as bacteria such as E. coli, there is a concern that it may cause secondary pollution, such as water or soil contamination, after being sprayed onto solar panels. Prior art literature

[0019] Patent Document 1: Korean Registered Patent Publication No. 10-1311903 (Registered Sep. 17, 2013) Patent Document 2: Korean Registered Patent Publication No. 10-1213146 (Registered Dec. 11, 2012) The problem to be solved

[0020] The present invention was devised in consideration of the above-mentioned problems, and aims to provide a cleaning and snow removal system for solar modules capable of spraying cleaner, more effective water onto the surface of a solar panel by increasing the dissolved oxygen content of the cleaning or snow removal solution, and an eco-friendly composition for the same.

[0021] Another objective of the present invention is to provide a solar module cleaning and snow removal system that can improve the air quality of the solar panel installation area and does not cause secondary pollution such as water or soil pollution, and an eco-friendly composition for the same. means of solving the problem

[0022] To achieve the above objectives, the present invention relates to a cleaning and snow removal system for solar modules installed in a solar power generation facility having a plurality of solar panels, comprising: a storage tank for storing a cleaning liquid or a snow removal liquid; a water treatment device disposed around or inside the storage tank for purifying the liquid; a pipe installed in a buried or external manner; a pump for transporting the cleaning liquid or snow removal liquid discharged from the storage tank through the pipe; and a plurality of spray nozzles disposed around the plurality of solar panels at predetermined intervals, connected to the pipe, and spraying the cleaning liquid or snow removal liquid onto the surface of the solar panels; wherein the water treatment device comprises: a box-shaped or mesh-shaped support having an open top surface and a plurality of through holes formed on the bottom surface and perimeter surface; and a gravel filter unit disposed inside the support having a plurality of porous gravels coated with a photocatalytic material on its surface. and an LED mesh having a plurality of LED elements installed at predetermined intervals, which are arranged in a zigzag folded shape within the gravel filter and capable of activating the photocatalytic material by irradiating ultraviolet or visible light onto the porous gravels; wherein the cleaning solution comprises potassium superoxide (KO2), perfluorodecalin (C 10 F 18 It comprises an oxygen-generating composition consisting of ), sodium percarbonate (2Na2CO3·3H2O2) and hydrogen peroxide (H2O2), and the perfluorodecalin (C 10 F 18The content of ) is 0.5 to 10 wt% relative to the total weight of the oxygen generating composition, and the de-icing liquid comprises 2 to 10 wt% potassium formate, 2 to 10 wt% potassium acetate, 0.5 to 2 wt% urea, 3 to 15 wt% propylene glycol, 0.01 to 0.02 wt% potassium hydroxide, 0.2 to 0.5 wt% sodium metasilicate, and 0.15 to 2.0 wt% tripotassium phosphate, thereby providing a cleaning and de-icing system for a photovoltaic module.

[0023] The above porous gravel may be porous scoria volcanic ejecta containing SiO2, Al2O3, and Fe2O3 components.

[0024] The above photocatalytic material may include a TiO2 component.

[0025] It further includes an auxiliary tank disposed at the front of the storage tank, capable of communicating with the storage tank, and having a smaller storage capacity compared to the storage tank; and the water treatment device may be disposed within the auxiliary tank.

[0026] It may further include a remote control device comprising a remote control system including a mobile phone or a central control device that communicates with a control unit to remotely control the pump.

[0027] It may further include a detection unit that detects the spraying state and standby state of the above-mentioned spray nozzle.

[0028] It may further include at least a solar power supply unit that supplies power to the above pump.

[0029] According to another aspect of the present invention, an eco-friendly composition for cleaning and de-icing a solar module installed in a solar power generation facility having a plurality of solar panels comprises a cleaning agent and a de-icing agent, wherein the cleaning agent comprises potassium superoxide (KO2) and perfluorodecalin (C 10 F 18It comprises an oxygen-generating composition consisting of ), sodium percarbonate (2Na2CO3·3H2O2) and hydrogen peroxide (H2O2), and the perfluorodecalin (C 10 F 18 An eco-friendly composition for cleaning and de-icing a solar module is provided, characterized in that the content of ) is 0.5 to 10 wt% relative to the total weight of the oxygen generating composition, and the de-icing agent comprises 2 to 10 wt% potassium formate, 2 to 10 wt% potassium acetate, 0.5 to 2 wt% urea, 3 to 15 wt% propylene glycol, 0.01 to 0.02 wt% potassium hydroxide, 0.2 to 0.5 wt% sodium metasilicate, and 0.15 to 2.0 wt% tripotassium phosphate. Effects of the invention

[0030] The solar module cleaning and snow removal system and the eco-friendly composition for the same according to the present invention have the following effects.

[0031] First, purification treatment can be performed within a water treatment device connected to a storage tank, where porous gravel, such as scoria volcanic ejecta (volcanic scoria), submerged in liquid is naturally decomposed and bacteria and viruses are killed through the catalytic action of ceramic components and the high specific surface area of ​​the gravel. Therefore, the cleanly purified liquid can be used for cleaning, cooling, and de-icing solar panels with simple equipment and low cost.

[0032] Second, it can prevent air, water, and soil pollution around solar power generation facilities caused by washing water used to clean solar panels.

[0033] Third, by increasing the amount of dissolved oxygen in the water, the quality of the cleaning solution can be improved, and solar panels can be cleaned using cleaner water.

[0034] Fourth, the scoria volcanic ejecta constituting the gravel filter is lightweight, hard enough not to be easily destroyed, and has a sufficiently large specific surface area compared to other minerals, so it can adsorb fine pollutants with high performance.

[0035] Fifth, when a photocatalytic material such as TiO2 is coated on the surface of porous gravel, it is possible to sterilize various bacteria and viruses remaining in rainwater, including initial runoff, or in river water flowing in from non-point sources, and to decompose harmful substances such as nitrogen oxides (NOx), sulfur oxides (SOx), and volatile organic compounds (VOCs), which are the main culprits of fine dust, thereby allowing the purified water to be used for cleaning, cooling, and de-icing of solar power generation facilities.

[0036] Sixth, by simply placing a gravel filter unit within a storage tank where rainwater, tap water, groundwater, or river water is stored, not only is the water contained within the tank filtered, but sterilization and decomposition of harmful compounds can also be achieved, allowing the water treatment device to be constructed at a low cost and in an eco-friendly manner.

[0037] Seventh, by installing a water treatment device in a relatively small auxiliary tank connected to the storage tank, sufficient water treatment capacity can be practically secured.

[0038] Eighth, a support section capable of accommodating fine dust, stone powder, etc. generated by contact or friction between porous gravel in the gravel filter section can be provided to prevent clogging of pipes or nozzles. Brief explanation of the drawing

[0039] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a diagram showing the configuration of a solar module cleaning and snow removal system equipped with a gravel filter according to a preferred embodiment of the present invention. Figure 2 is a cross-sectional view illustrating the configuration in which a water treatment device is arranged within the auxiliary tank in Figure 1. Figure 3 is a cross-sectional view illustrating the configuration of the water treatment device in Figure 2 in detail. FIG. 4 is a schematic perspective view illustrating the configuration before and after the formation of a catalyst coating layer on the porous gravel in FIG. 3. Figure 5 is a cross-sectional view illustrating a modified example of Figure 3. Figure 6 is a perspective view showing the configuration of the LED mesh in Figure 5. Figure 7 is a photograph showing porous volcanic gravel coated with a photocatalyst on its surface as an experimental example. FIG. 8 is a schematic diagram illustrating the introduction of an oxygen generating composition into a storage tank in FIG. 1. Specific details for implementing the invention

[0040] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0041] FIG. 1 is a schematic diagram illustrating the configuration of a solar module cleaning and snow removal system and an eco-friendly composition for the same according to a preferred embodiment of the present invention.

[0042] Referring to FIG. 1, a cleaning and snow removal system for a solar module and an eco-friendly composition for the same according to a preferred embodiment of the present invention comprises a storage tank (100) in which a liquid used as a cleaning liquid or a snow removal liquid is stored, a water treatment device (201) for purifying the liquid, a pump (104) for pumping the liquid discharged from the storage tank (100), a control unit (106) for controlling the operation of the pump (104), a plurality of spray nozzles (120) arranged around the solar panel of a solar power generation facility to spray the liquid onto the surface of the solar panel (1), a pipe (111) for supplying the liquid transported by the pump (104) to the spray nozzles (120), a communication card (110) capable of transmitting and receiving a control signal for controlling the spraying of the liquid, and a valve box (108) containing an electric valve (109) connected to the communication card (110).

[0043] The storage tank (100) is provided with an internal space capable of accommodating a liquid (water) used as a cleaning solution or de-icing solution. The liquid stored in the storage tank (100) may include rainwater obtained through a rainwater storage tank such as a subway station, river water supplied from a river connected to various non-point source pollution sources, and tap water used for household, industrial, or agricultural purposes.

[0044] An inlet section consisting of an inlet and a cover for introducing liquid is provided at the top of the storage tank (100), and a discharge section consisting of a pipe for discharging the stored liquid to the outside is provided at the bottom. The present invention can be operated to clean and cool the surface of a solar panel (1) using recycled water such as groundwater or rainwater during the summer, and to clean and de-icing the surface of a solar panel (1) using a liquid containing an eco-friendly de-icing agent during the winter.

[0045] When de-icing liquid is introduced into the storage tank (100), a specific stirrer (not shown) vertically positioned at the center of the storage tank (100) may be provided. The stirrer has a structure in which a stirring blade is installed below a motor fixed to the upper part of the storage tank (100). The stirrer performs the action of stirring the fluid stored in the storage tank (100) by slowly rotating the stirring blade, thereby preventing the de-icing liquid from settling during the winter or preventing the fluid inside the storage tank (100) from freezing. The installation structure of the stirrer is described in more detail in Registered Patent Publication No. 10-2073520, which was previously filed by the applicant and granted a patent.

[0046] The above-mentioned de-icing liquid must contain a de-icing agent or a de-icing aid, a steel corrosion inhibitor, and a freezing point depressant. Among the de-icing compounds, it may include acetate or formate salts, taking into account the biodegradability of the material, and being environmentally friendly and harmless to solar panels and ecosystems. In addition, it may include urea as a de-icing aid, propylene glycol or glycerol as a freezing point depressant, sodium metasilicate or tripotassium phosphate as a corrosion inhibitor, potassium hydroxide or triethanolamine as a pH adjuster, and the remainder being water. More specifically, the de-icing liquid may comprise 2 to 10 weight% potassium formate, 2 to 10 weight% potassium acetate, 0.5 to 2 weight% urea, 3 to 15 weight% propylene glycol, 0.01 to 0.02 weight% potassium hydroxide, 0.2 to 0.5 weight% sodium metasilicate, and 0.15 to 2.0 weight% tripotassium phosphate. In addition, the de-icing liquid may include various known eco-friendly de-icing agents. A more detailed composition of the eco-friendly de-icing liquid composition is disclosed in Registered Patent Publication No. 10-1787963, which was previously filed by the applicant and granted a patent.

[0047] A water treatment device (201) may be positioned around the storage tank (100) to perform the function of pre-purifying the fluid to be introduced into the storage tank (100). Preferably, the water treatment device (201) may be positioned at the front of the storage tank (100) and placed within an auxiliary tank (200) that is in communication with the storage tank (100). Alternatively, the water treatment device (201) may be positioned inside the storage tank (100) to purify the liquid.

[0048] The auxiliary tank (200) is a small storage container having a significantly smaller storage capacity compared to the storage tank (100), and can accommodate an amount of water corresponding to the contaminant treatment capacity of the water treatment device (201). The auxiliary tank (200) and the storage tank (100) can be selectively connected by a treated water discharge valve (203).

[0049] As illustrated in detail in FIG. 2, the water treatment device (201) is placed in the internal space of the auxiliary tank (200). When a gravel filter (202) is set in the water treatment device (201) and the treated water discharge valve (203) is closed, raw water, such as tap water or rainwater storage liquid, is supplied through the inlet pipe and stored in the auxiliary tank (200), water quality purification treatment proceeds naturally by the gravel filter (202) which is positioned to be submerged in the water to be treated within the auxiliary tank (200). For example, after purification treatment is completed during a waiting time of several to tens of hours, the treated water discharge valve (203) is opened, and the purified treated water can be moved to the storage tank (100) and stored. To this end, a predetermined pump may be interposed in the pipeline between the auxiliary tank (200) and the storage tank (100). By repeating this process, the purified water collected in the storage tank (100) can be sprayed onto the surface of the solar panel (1) as a liquid for washing, cooling, and de-icing.

[0050] As shown in more detail in FIG. 3, the water treatment device (201) includes a support (201a) of a predetermined shape disposed in the internal space of an auxiliary tank (200), and a gravel filter (202) disposed in the support (201a) and being an aggregate of a plurality of porous gravel (202a).

[0051] The support body (201a) may be composed of a mesh net capable of accommodating the gravel filter (202), or a stainless steel box or synthetic resin box having an open top surface and a plurality of through holes formed on the bottom surface and perimeter surface. Alternatively, the support body (201a) may be composed simply of a stainless steel plate having a plurality of through holes.

[0052] Preferably, the porous gravel (202a) may be 'volcanic scoria,' a porous scoria volcanic ejecta containing silicon dioxide (SiO2), aluminum oxide (Al2O3), and iron oxide (Fe2O3). Scoria volcanic ejecta is formed when magma is released into the atmosphere during volcanic activity, causing volatile internal components to escape and creating many pores; it originates from basic or neutral magma. Scoria volcanic ejecta is lightweight, hard enough not to be easily destroyed, and has a specific surface area of ​​9.9 to 177.6 m² / g, thus possessing a surface structure sufficient for adsorbing fine pollutants.

[0053] In order to further promote the decomposition reaction of pollutants on porous gravel (202a), as shown in FIG. 4, a catalytic coating layer (207) can be provided on the surface of each porous gravel (202a), preferably formed by a photocatalytic composition having titanium dioxide (TiO2) as the main component. In addition, the catalytic coating layer (207) may further include additives such as phosphoric acid (H3PO4) so ​​that the catalytic reaction of the catalytic coating layer (207) can occur well in a visible light environment as well as in an ultraviolet light environment, and even in a dark environment inside the storage tank (100) without a separate light source.

[0054] A support member (206) is positioned at the bottom of a support body (201a) to support the support body (201a) so that it is stably fixed without flowing in the water. The support member (206) includes a first surface portion corresponding to the support body (201a) and a second surface portion formed on both sides of the first surface portion, through which a through hole (206a) is formed so that treated water can freely pass through. The first surface portion, which is the part without the through hole (206a), serves to prevent fine stone powder or dust generated from the gravel filter portion (202) and discharged through the through hole (201b) on the lower surface of the support body (201a) from spreading into the water and to keep it stagnant on the first surface portion. As shown in FIG. 2, a protruding guide ridge may be provided on the upper surface of the first surface portion to hold the support body (201a). Alternatively, the upper surface of the first surface portion may have a groove formed corresponding to the bottom surface of the support (201a), and the lower end of the support (201a) may be fitted into the groove.

[0055] In the gravel filter section (202), as shown in FIG. 6, an LED mesh (210) may be arranged in which a plurality of LED elements (210b) are installed at predetermined intervals in a wire array (210a) arranged in a mesh shape. The LED mesh (210) is connected to a power supply section (208) located outside the support body (201a) via a power line (209).

[0056] As shown in FIG. 5, the LED mesh (210) is folded in a zigzag shape within the gravel filter section (202), and porous gravel (202a) is arranged between the folds so that ultraviolet or visible light is evenly irradiated onto the porous gravel (202a) located inside the gravel filter section (202) to further promote the active reaction of the catalyst coating layer (207). In this case, the catalyst coating layer (207) is composed of a photocatalytic composition.

[0057] Volcanic scoria, a scoria volcanic ejecta, was prepared as the porous gravel (202a). In order to coat the surface of the porous gravel with a photocatalytic material, the porous gravel (202a) was dipped in a mixture of TiO2 and isopropyl alcohol (IPA) for 30 minutes, and then a heat treatment process was performed using an oven at 200°C for 1 hour. As shown in FIG. 7, the porous gravel after the heat treatment process is completed still has pores on its surface and has an overall reddish color due to its characteristics of containing iron (Fe) components.

[0058] As illustrated in FIG. 8, the oxygen generating unit (20') is positioned inside the storage tank (100) to further increase the dissolved oxygen content of the cleaning solution or de-icing solution. Increasing the dissolved oxygen content can provide beneficial effects to the ecological environment, such as suppressing anaerobic bacteria present in the water and causing aerobic microorganisms to increase exponentially to decompose organic pollutants. These effects may be significantly apparent when the dissolved oxygen content in the water is 10 to 55 ppm. The oxygen generating unit (20') uses potassium superoxide (KO2) and perfluorodecalin (C 10 F 18 It includes an oxygen-generating composition composed of ), sodium percarbonate (2Na2CO3·3H2O2) and hydrogen peroxide (H2O2). Preferably, to make the dissolved oxygen content of the liquid in the storage tank (100) 10 to 55 ppm, the perfluorodecalin (C 10 F 18 The content of ) may be 0.5 to 10 wt% relative to the total weight of the oxygen generating composition.

[0059] Referring again to FIG. 1, the pump (104) is connected to the discharge portion of the storage tank (100) through a predetermined pipe and pumps the liquid discharged from the storage tank (100) at a predetermined flow rate and pressure. It is preferable that at least two pumps (104) are provided, and that one of them acts as an auxiliary pump.

[0060] An air supply device (103) is installed on one side of a pipe connected to a storage tank (100) and supplies air to discharge the remaining fluid inside the pipe to the outside through a spray nozzle (112). The air supply device (103) may be connected to a separate air compressor, or alternatively, the air supply device (103) itself may be configured as an air compressor. When the summer solar panel cleaning and cooling mode ends, the air supply device (103) discharges all remaining liquid, such as groundwater, liquid, or tap water, inside the entire pipe using air pressure to prevent the pipe from freezing in the winter.

[0061] The liquid discharged from the storage tank (100) and pumped by the pump (104) is supplied to the pipe (111) via the main pipe (105).

[0062] The pump station is a facility that surrounds the exterior of the pump (104), main piping (105), air supply device (103), control unit (106), etc. to protect them. The pump station may be composed of a house made of concrete structures, or a container.

[0063] The pipe (111) is placed in a designated area of ​​the solar power generation facility and transports liquid pumped by the pump (104) to the spray nozzle (112). The pipe (111) can be buried underground below the road surface, and if necessary, at least a portion may be exposed to the outside.

[0064] The control unit (106) controls the operation of the pump (104) to regulate the flow rate and pressure of the liquid, and to control on / off. The control unit (106) can be remotely controlled by communicating with a remote control device (107) which is a remote control system comprising a mobile phone (smartphone) (107a) at a remote location and / or a central control device (107b) which is a computer located in a central control room. The remote control device (107) can perform data communication with the control unit (106) via wired or wireless internet or various serial communication. Specifically, communication between the remote control device (107) and the control unit (106) can be performed according to at least one communication protocol selected from, for example, LoRa, CDMA, LTE, Ethernet, CAN, RS422, RS232, and RS485. At least one communication protocol selected from LoRa, CDMA, LTE, RS422, RS232, and RS485 may also be used for communication between the control unit (106), the storage tank (100), the pump (104), the detection unit (113), and the electric valve (109).

[0065] The control unit (106) is preferably provided within a control panel having a metal housing. The control panel is preferably installed spatially within the pump station, but is not limited to this example. The control panel performs control of the valve box (108), control of the pump (104) or various control valves and main piping (105) within the pump station, operation control of the agitator, and switching control of manual / automatic operation modes. The control unit (106) can transmit data regarding the spraying state and standby state of the spray nozzle (112) detected by the detection unit (113) to the remote control device (107).

[0066] The detection unit (113) may be equipped with at least one detection sensor among a fine dust detection sensor for detecting fine dust, a hazardous substance detection sensor for detecting at least one selected from sulfur oxides, nitrogen oxides, volatile organic compounds and radon, and other hazardous substances specified by the Ministry of Environment Ordinance, a temperature and humidity detection sensor for detecting temperature and humidity, a rainfall detection sensor for detecting the amount of snow or rain, and a road surface detection sensor for checking the condition of snow or rain accumulating on the road surface. The detection signal output from the detection unit (113) is transmitted to the control unit (106) through the communication card box (114).

[0067] Around the detection unit (113), a video surveillance camera (116) that allows real-time verification of the spraying status, etc., and an information display board (117) composed of an LED or liquid crystal display that displays the spraying status of the liquid, fine dust concentration, and weather conditions may be arranged.

[0068] The valve box (108) can be installed externally or embeddedly in a designated area within the solar power generation facility. The valve box (108) can be arranged one by one for each spraying zone containing a plurality of spray nozzles (120).

[0069] The information display board (118) may be composed of, for example, an LED display board installed on a solar power generation facility or a designated support. The information display board (118) can display phrases such as "solar panel being cleaned," "solar panel being cooled," or "solar panel being snow removed" to facilitate checking and managing the operating status of the solar power generation facility.

[0070] Spray nozzles (120) are arranged at predetermined intervals around a plurality of solar panels (1) and connected to pipes (111). The spray nozzles (120) spray a cleaning liquid or a de-icing liquid onto the surface of the solar panels (1). The spray nozzles (120) may be positioned downward at an angle corresponding to the inclination angle of the solar panels (1). It is preferable that the left-right spray angle of the spray nozzles (120) be within 180 degrees.

[0071] The solar power supply (2) is a power supply provided to contribute to carbon neutrality and is positioned around the storage tank (100) or pump (104) to generate direct current electricity through solar power generation. The solar power supply (2) may include a solar panel of a predetermined power generation capacity and a predetermined power converter. The direct current electricity generated from the solar power supply (2) can be used as power for operating at least the pump (104). Furthermore, the direct current electricity generated from the solar power supply (2) can be used as power for operating the LED mesh (210).

[0072] As described above, the water treatment device (201) can be placed in the internal space of the auxiliary tank (200). When a gravel filter (202) is placed in the water treatment device (201) and the treated water discharge valve (203) is closed, raw water, such as tap water or rainwater storage liquid, is supplied through an inlet pipe and stored in the auxiliary tank (200), water quality purification treatment proceeds naturally by the gravel filter (202) which is positioned to be submerged in the water to be treated within the auxiliary tank (200). After purification treatment is completed during a waiting time of several to tens of hours, the treated water discharge valve (203) is opened, and the purified treated water can be moved to the storage tank (100) and stored. At this time, the movement of the purified treated water can be performed by a predetermined pump. By repeating this process, the purified water collected in the storage tank (100) is transferred to the spray nozzle (120) via the pipe (111) and sprayed in the form of a fine stream of water from the spray nozzle (120) to clean and cool the surface of the solar panel (1) or to remove snow.

[0073] As described above, when the present invention is applied, purification treatment can be performed within a water treatment device connected to a storage tank by naturally decomposing pollutants through the high specific surface area of ​​porous gravel immersed in water, the catalytic action of ceramic components, and furthermore, the photodecomposition reaction of a photocatalyst. Therefore, by spraying a cleanly purified liquid onto the surface of a solar panel with simple equipment and low cost, cleaning efficiency can be increased, and contamination of the surrounding air, water, and soil by the cleaning water can be prevented.

[0074] Although the present invention has been described above with reference to limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations within the scope of the technical concept of the present invention are possible by those skilled in the art to which the present invention belongs. Explanation of the symbols

[0075] 1: Solar panel 2: Solar power supply 100: Storage tank 104: Pump 106: Control unit 107: Remote control unit 111: Piping 113: Detector 113: Detector 120: Spray nozzle 200: Auxiliary tank 201: Water treatment device 201a: Support 201b, 206a: Through holes 202: Gravel filter section 202a: Porous gravel 203: Treated water discharge valve 204: Inlet pipe 205: Discharge pipe 206: Support part 207: Catalyst coating layer 208: Power supply unit 210: LED mesh

Claims

Claim 1 A cleaning and snow removal system for solar modules installed in a solar power generation facility having a plurality of solar panels, comprising: a storage tank for storing a cleaning solution or a snow removal solution; a water treatment device disposed around or inside the storage tank for purifying the cleaning solution or the snow removal solution; a pipe installed in a buried or external manner; a pump for transporting the cleaning solution or the snow removal solution discharged from the storage tank through the pipe; and a plurality of spray nozzles disposed around the plurality of solar panels at predetermined intervals, connected to the pipe, and spraying the cleaning solution or the snow removal solution onto the surface of the solar panels; wherein the water treatment device comprises: a box-shaped or mesh-shaped support having an open top surface and a plurality of through holes formed on the bottom surface and perimeter surface; and a gravel filter unit disposed inside the support having a plurality of porous gravels coated with a photocatalytic material on its surface. and an LED mesh having a plurality of LED elements installed at predetermined intervals, which are arranged in a zigzag folded shape within the gravel filter and capable of activating the photocatalytic material by irradiating ultraviolet or visible light onto the porous gravels; wherein the cleaning solution comprises potassium superoxide (KO2), perfluorodecalin (C 10 F 18 It comprises an oxygen-generating composition consisting of ), sodium percarbonate (2Na2CO3·3H2O2) and hydrogen peroxide (H2O2), and the perfluorodecalin (C 10 F 18 A cleaning and snow removal system for a photovoltaic module, characterized in that the content of ) is 0.5 to 10 wt% relative to the total weight of the oxygen generating composition, and the snow removal liquid comprises 2 to 10 wt% potassium formate, 2 to 10 wt% potassium acetate, 0.5 to 2 wt% urea, 3 to 15 wt% propylene glycol, 0.01 to 0.02 wt% potassium hydroxide, 0.2 to 0.5 wt% sodium metasilicate, and 0.15 to 2.0 wt% tripotassium phosphate. Claim 2 A solar module cleaning and snow removal system according to claim 1, characterized in that the porous gravel is a porous scoria volcanic ejecta containing SiO2, Al2O3 and Fe2O3 components. Claim 3 A cleaning and snow removal system for a solar module according to claim 1, characterized in that the photocatalytic material comprises a TiO2 component. Claim 4 A solar module cleaning and snow removal system according to claim 1, further comprising an auxiliary tank disposed at the front end of the storage tank, communicating with the storage tank, and having a storage capacity smaller than that of the storage tank, wherein the water treatment device is disposed within the auxiliary tank. Claim 5 A solar module cleaning and snow removal system comprising: a remote control device comprising a remote control system including a mobile phone or a central control device that communicates with a control unit to remotely control the pump in accordance with claim 1. Claim 6 A solar module cleaning and snow removal system according to claim 5, further comprising a sensing unit for detecting the spraying state and the standby state of the spray nozzle. Claim 7 A solar module cleaning and snow removal system according to claim 1, further comprising at least a solar power supply unit that supplies power to the pump. Claim 8 delete

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