A rainwater recycling system

Abstract

The present invention is characterized by being configured to include a rainwater intake device (100), a rainwater filtration device (200), a rainwater storage device (300), a pump device (400), a rainwater reuse device (500), and a control device (600), thereby providing effects such as improving the overall water quality reliability of stored rainwater to be used as water, reducing the filter load of the filtration device to extend the maintenance cycle and reduce costs, and establishing a resource circulation system (closed-loop) that recovers rainwater used as agricultural water for hydroponics and reuses it for various purposes when stored rainwater to be used as water for various purposes is insufficient, and ensuring reliability so that the supply of water is not interrupted.

Description

Technology Field

[0001] The present invention relates to a rainwater recycling system, and more specifically, to a technology for a rainwater recycling system that maximizes the utilization efficiency of rainwater by separating and treating high-contamination initial rainwater generated during rainfall, storing low-contamination normal rainwater for various uses such as domestic water, landscaping water, and agricultural water, and recirculating and reusing rainwater used for hydroponic cultivation. Background Technology

[0003] Recently, water shortages have been intensifying globally due to climate change, accelerated urbanization, population growth, and the expansion of industrial activities. Furthermore, existing water supply systems relying on tap water are vulnerable to external environmental changes such as drought, abnormal weather, and water source pollution, which limits the stable securing of various types of water (including domestic, landscaping, and agricultural water).

[0004] Under these circumstances, interest in utilizing rainwater as an alternative water resource has recently been increasing, and rainwater utilization systems are being developed to collect rainwater flowing from roofs or the ground surface into storage tanks for water supply.

[0005] However, conventional rainwater utilization systems have the following limitations.

[0006] Conventional rainwater utilization systems have problems with initial rainwater contamination and reduced treatment efficiency.

[0007] Recently, technologies utilizing rainwater as an alternative water source are becoming widely adopted to address water shortages caused by climate change. However, the first flush, which occurs during the initial stages of rainfall, contains high concentrations of pollutants, including atmospheric fine dust, sediment on roofs or surfaces, and animal excrement.

[0008] Conventional rainwater utilization systems suffer from chronic problems, such as failing to properly separate this initial rainwater and allowing it to flow into the storage tank, which degrades the quality of the total stored water or places an excessive load on the filtration device, thereby shortening the filter replacement cycle. Furthermore, simply discarding the initial rainwater results in inefficiency by reducing the actual amount of usable rainwater.

[0009] In addition, conventional rainwater utilization systems have the problem of one-time consumption of rainwater used for hydroponic cultivation.

[0010] Hydroponics, utilized in urban agriculture and smart farms, offers higher water efficiency compared to conventional soil cultivation; however, the used cultivation water is currently discarded. If nutrient components or plant waste are properly filtered during hydroponics, the water can be reused. Conversely, if the used water containing these substances is discharged directly, it poses a risk of causing eutrophication in rivers.

[0011] Currently, most rainwater reuse systems focus solely on supplying rainwater and lack a system for recovering and recirculating used agricultural water. This necessitates continuous water replenishment, leading to increased overall water management costs and water waste.

[0012] In addition, conventional rainwater utilization systems have the problem of water supply instability due to changes in rainfall patterns.

[0013] Conventional rainwater utilization systems are entirely dependent on weather conditions. During periods of prolonged drought or dry spells, if the water level in the storage tank drops, the supply of water for domestic, landscaping, and agriculture is interrupted. In other words, existing systems lack a separate means to secure emergency water when the main storage tank level falls, and they also lack control logic to organically link the aforementioned initial rainwater or reusable used rainwater to utilize it as supplementary water.

[0014] Therefore, in order to resolve issues such as contamination of initial rainwater and reduced treatment efficiency, the one-time consumption of rainwater used for hydroponics, and the instability of water supply due to changes in rainfall patterns, there is a need to develop circular rainwater management technology that separates rainwater into initial and normal rainwater for treatment, allows for more systematic management of filtration, storage, supply, and reuse processes, and enables the recycling of even used rainwater.

[0015] This invention addresses the aforementioned problems and needs, and proposes a technology for a rainwater recycling system that maximizes the utilization efficiency of rainwater by separating and treating high-contamination initial rainwater generated during rainfall, storing low-contamination normal rainwater for various uses such as domestic water, landscaping water, and agricultural water, and recirculating and reusing rainwater used for hydroponic cultivation. The following are prior art related to this. Prior art literature

[0017] 1. Korean Registered Patent Publication No. 10-1381402 2. Korean Registered Patent Publication No. 10-1842941 3. Korean Registered Patent Publication No. 10-1925564 4. Korean Registered Patent Publication No. 10-2046562

[0018] 1. A Study on Measures to Promote Rainwater Utilization: Focusing on Seoul (Korea Education and Research Information Service, 2010) 2. A Study on the Development and Evaluation of a Hybrid Stormwater Treatment System for Rainwater Recycling (Journal of the Architectural Institute of Korea, 2017) The problem to be solved

[0019] The present invention aims to separate contaminated initial rainwater and filter only clean, normal rainwater for use as various types of water (domestic water, landscaping water, and agricultural water for hydroponics).

[0020] The present invention aims to ensure the continuity of water supply by recovering rainwater used for hydroponic agricultural purposes and reusing it for various purposes when there is a shortage of stored rainwater for various uses. means of solving the problem

[0022] The rainwater recycling system of the present invention for solving the above problem is,

[0023] A rainwater intake device (100) that collects falling rainwater and supplies the collected rainwater to a rainwater filtration device (200);

[0024] A rainwater filtration device (200) that filters rainwater supplied through a rainwater intake device (100);

[0025] A rainwater storage device (300) that stores rainwater filtered through a rainwater filtration device (200);

[0026] A pump device (400) that supplies rainwater stored in a rainwater storage device (300) to a water usage location so that the rainwater stored in the rainwater storage device (300) can be used as various water;

[0027] A rainwater reuse device (500) that stores rainwater to be used when there is a shortage of rainwater stored in a rainwater storage device (300), and supplies the stored rainwater to the rainwater storage device (300);

[0028] The invention is characterized by including a control device (600) that controls the rainwater intake device (100) so that rainwater collected through the rainwater intake device (100) is discarded or supplied to the rainwater filtration device (200) according to the degree of contamination, controls the rainwater filtration device (200) so that rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater storage device (300) or the rainwater reuse device (500) according to the characteristics of the filtered rainwater, and controls the rainwater reuse device (500) so that rainwater stored in the rainwater storage device (300) is supplied to the rainwater storage device (300) when there is a shortage of rainwater stored in the rainwater storage device (300). Effects of the invention

[0030] The present invention provides the effect of improving the overall water quality reliability of stored rainwater to be used as water, reducing the filter load of the filtration device, extending the maintenance cycle, and reducing costs by preemptively separating high-contamination initial rainwater and filtering only low-contamination normal rainwater to supply it for various uses.

[0031] The present invention provides the effect of ensuring reliability by preventing the interruption of water supply through the establishment of a resource circulation system (closed-loop) that recovers rainwater used for hydroponic agricultural purposes and reuses it for various purposes when stored rainwater for various uses is insufficient. Brief explanation of the drawing

[0033] FIG. 1 is an overall configuration diagram of the present invention. FIG. 2 is a detailed configuration diagram of the rainwater intake device of the present invention. FIG. 3 is a detailed configuration diagram of the rainwater filtration device of the present invention. FIG. 4 is a detailed configuration diagram of the rainwater storage device, pump device, and rainwater reuse device of the present invention. FIG. 5 is a functional block diagram of the control device of the present invention. Specific details for implementing the invention

[0034] Embodiments of the present invention will be described in detail with reference to the attached drawings.

[0035] The present invention (hereinafter referred to as the present invention) is an invention that provides the effect of ensuring reliability by ensuring the supply of water is not interrupted, by establishing a resource circulation system (closed-loop) in which rainwater used for hydroponics is recovered and reused for various purposes when there is a shortage of stored rainwater to be used for various purposes, thereby improving the overall water quality reliability of stored rainwater to be used for various purposes and reducing the filter load of the filtration device to extend the maintenance cycle and reduce costs, and by establishing a resource circulation system (closed-loop) in which rainwater used for agricultural water for hydroponics is recovered and reused for various purposes. As shown in FIG. 1, the invention is characterized by being composed of a rainwater intake device (100), a rainwater filtration device (200), a rainwater storage device (300), a pump device (400), a rainwater reuse device (500), and a control device (600).

[0037] Specifically, the rainwater recycling system of the present invention, as illustrated in FIG. 1,

[0038] A rainwater intake device (100) that collects falling rainwater and supplies the collected rainwater to a rainwater filtration device (200);

[0039] A rainwater filtration device (200) that filters rainwater supplied through a rainwater intake device (100);

[0040] A rainwater storage device (300) that stores rainwater filtered through a rainwater filtration device (200);

[0041] A pump device (400) that supplies rainwater stored in a rainwater storage device (300) to a water usage location so that the rainwater stored in the rainwater storage device (300) can be used as various water;

[0042] A rainwater reuse device (500) that stores rainwater to be used when there is a shortage of rainwater stored in a rainwater storage device (300), and supplies the stored rainwater to the rainwater storage device (300);

[0043] The invention is characterized by including a control device (600) that controls the rainwater intake device (100) so that rainwater collected through the rainwater intake device (100) is discarded or supplied to the rainwater filtration device (200) according to the degree of contamination, controls the rainwater filtration device (200) so that rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater storage device (300) or the rainwater reuse device (500) according to the characteristics of the filtered rainwater, and controls the rainwater reuse device (500) so that rainwater stored in the rainwater storage device (300) is supplied to the rainwater storage device (300) when there is a shortage of rainwater stored in the rainwater storage device (300).

[0045] The above rainwater intake device (100) is configured to take rainwater and supply the taken rainwater to a rainwater filtration device (200). During rainfall, depending on the contamination level of the taken rainwater, the initial rainwater with a high concentration of pollutants is discarded, while the initial rainwater with a relatively low concentration of pollutants is supplied to the rainwater filtration device (200), and normal rainwater with almost no pollutants is supplied to the rainwater filtration device (200), thereby ensuring the water quality stability of the rainwater to be used for various purposes. The rainwater intake device (100) has two embodiments depending on the rainwater collection method.

[0047] Specifically, the first embodiment of the rainwater intake device (100) is, as shown in A of FIG. 2,

[0048] A plurality of rainwater collection boxes (110) installed on a building roof or yard to collect falling rainwater, each having an openable / closeable door (111) that controls the opening and closing, and

[0049] A rainfall sensor (120) that provides a rainfall signal and rainfall amount information per unit time to a control device (600) when rainfall is detected, and

[0050] It is characterized by including a multi-way valve (130) that controls the rainwater collected through the rainwater collection box (110) so that the initial rainwater is discarded, and the initial rainwater and normal rainwater are supplied to the rainwater filtration device (200).

[0052] The above-mentioned plurality of rainwater collection boxes (110) are installed on a building roof or yard to collect falling rainwater, and are configured to have an openable / closeable door (111) that controls opening and closing. They can be installed in various locations such as a building roof or yard, and it is preferable to install them in a yard considering the installation load issue.

[0053] Each of the above-mentioned plurality of rainwater collection boxes (110) is equipped with an openable door (111) that controls the opening and closing. Normally, when it is not raining, it is controlled to a closed state to prevent foreign substances or contaminants such as dust, fallen leaves, and insects from entering the rainwater collection box (110), and when it rains, it is controlled to open to collect rainwater.

[0055] The above rainfall sensor (120) is configured to provide a rainfall signal and rainfall amount information per unit time to a control device (600) when rainfall is detected, and the rainfall signal and rainfall amount information per unit time provided to the control device (600) are used for controlling the opening and closing of the above-mentioned openable door (111) and for calculating the valve switching time described later.

[0057] The above multi-way valve (130) is configured such that, among the rainwater collected through the rainwater collection box (110), the initial rainwater is discarded, and the initial rainwater and normal rainwater are supplied to the rainwater filtration device (200).

[0058] Generally, early rainwater, which is collected during the initial stages of rainfall, contains large amounts of non-point source pollutants such as dust and contaminants from the atmosphere, making it unsuitable for use as water and requiring it to be discarded.

[0059] However, in the present invention, the initial rainwater is not discarded unconditionally; instead, the initial rainwater with a high amount of non-point source pollutants is discarded, while the initial rainwater with relatively low non-point source pollutants and the normal rainwater with almost no non-point source pollutants are supplied to a rainwater filtration device (200) so that they can be used as water.

[0060] To this end, the control device (600) of the present invention controls the plurality of rainwater collection tanks (110) and multi-way valves (130) using a rainfall signal provided by a rainfall sensor (120) and rainfall amount information per unit time, as shown in FIG. 5.

[0061] Specifically, the control device (600) normally controls the openable door (111) installed in the rainwater collection boxes (110) to be in a closed state so that foreign substances or contaminants such as dust, fallen leaves, and insects do not enter the rainwater collection boxes (110), but when the rain sensor (120) provides a rain signal, it controls the openable door (111) installed in the rainwater collection boxes (110) to be in an open state for rainwater collection. At this time, the multi-way valve (130) is controlled so that the rainwater collected through the rainwater collection boxes (110) is discharged through the drain pipe.

[0062] After controlling the multi-way valve (130) so that rainwater collected through the rainwater collection boxes (110) is discarded, the control device (600) calculates the valve switching time using the rainfall amount information per unit time provided by the rainfall sensor (120). The calculated valve switching time is the time used to determine whether the falling rainwater is early rainwater, late rainwater, or normal rainwater, and is the time used by the control device (600) to determine the direction of the discharge path of the multi-way valve (130) of the rainwater collection device (100) and the multi-way valve (241) of the rainwater filtration device (200) described later, and is typically a time of about 30 minutes.

[0063] The valve switching time can vary depending on the rainfall per unit of time; the higher the rainfall per unit of time, the shorter the calculated valve switching time becomes, and the lower the rainfall, the longer the calculated valve switching time becomes.

[0064] The control device (600) controls the multi-way valve (130) so that rainwater collected through the rainwater collection boxes (110) is discarded, and then, when a preset ratio of the calculated valve switching time (e.g., 2 / 3 of the valve switching time) has elapsed, controls the multi-way valve (130) so that the collected rainwater is supplied to the rainwater filtration device (200).

[0065] Initial rainwater, collected during the early stages of rainfall, contains large amounts of non-point source pollutants such as dust and contaminants from the atmosphere, making it unsuitable for use as water and requiring it to be discarded.

[0066] However, in the present invention, the initial rainwater is not discarded unconditionally; instead, the initial rainwater with severe contamination in the early part (e.g., rainwater that falls within 2 / 3 of the valve switching time) is discarded, while the initial rainwater with relatively less contamination in the later part (e.g., rainwater that falls after 2 / 3 of the valve switching time) is not discarded but is filtered so that it can be used as water.

[0067] That is, the control device (600) controls the multi-way valve (130) so that rainwater collected before the preset ratio time of the calculated valve switching time (e.g., 2 / 3 of the time of the valve switching time) is determined to be early rainwater with heavy contamination and is discharged through the drain pipe, and then controls the multi-way valve (130) so that rainwater collected from the time of the preset ratio time of the calculated valve switching time (e.g., 2 / 3 of the time of the valve switching time) until the valve switching time is determined to be early rainwater with relatively less contamination and is not discharged but is supplied to the rainwater filtration device (200), and maintains the discharge direction of the multi-way valve (130) so that rainwater collected after the calculated valve switching time is determined to be normal rainwater with almost no contamination and is supplied to the rainwater filtration device (200).

[0069] A second embodiment of the above rainwater intake device (100) is, as shown in B of FIG. 2,

[0070] A plurality of ditch-type rainwater intake pipes (110-1) installed at the eaves of the building roof to collect falling rainwater, and

[0071] A rain sensor (120) that provides rain signals and rain amount information to a control device (600) when rain is detected, and

[0072] It is characterized by including a multi-way valve (130) that controls the rainwater collected through the ditch-type rainwater intake pipes (110-1), so that the initial rainwater is discarded, and the initial rainwater and normal rainwater are supplied to the rainwater filtration device (200).

[0074] The above plurality of ditch-type rainwater intake pipes (110-1) are configured to be installed at each eave of the building roof to collect falling rainwater. As shown in Fig. 2B, the ditch-type rainwater intake pipes (110-1) are installed at the eaves of the building roof to collect falling rainwater flowing along the roof, and the collected rainwater is supplied to a multi-way valve (130) through a pipe.

[0075] The features of the rain sensor (120) and multi-way valve (130) constituting the second embodiment of the rainwater intake device (100) described above are the same as the features of the first embodiment of the rainwater intake device (100) described above, so a detailed description of the features is omitted.

[0076] In the second embodiment of the rainwater intake device (100), the control device (600) of the present invention calculates a valve switching time using a rainfall signal provided by the rainfall sensor (120) of the second embodiment and rainfall amount information per unit time, and controls the multi-way valve (130) of the second embodiment using the calculated valve switching time. Since the control features of the control device (600) are the same as those of the first embodiment of the rainwater intake device (100), a description of the specific features is omitted.

[0078] The above rainwater filtration device (200) is configured to filter rainwater supplied through a rainwater intake device (100), and as shown in FIG. 3, it filters the rainwater (later initial rainwater and normal rainwater) supplied from the rainwater intake device (100), and allows the filtered rainwater (filtered normal rainwater) to be supplied to a rainwater storage device (300) or allows the filtered rainwater (filtered later initial rainwater) to be supplied from a rainwater reuse device (500).

[0080] Specifically, the rainwater filtration device (200) is, as shown in FIG. 3,

[0081] A first tank (210), which is a concrete structure having an internal space for storing rainwater supplied from a rainwater intake device (100) for multi-stage filtration, and

[0082] A first contact prevention finishing material (220) made of ginkgo wood, which is installed as a watertight finish on the entire inner surface of the first tank (210) so that rainwater being filtered does not come into contact with the first tank (210) made of concrete, and

[0083] A plurality of filtration filters (230) vertically installed in the internal space of the first tank (210) so that rainwater supplied from the rainwater intake device (100) is filtered in multiple stages, and

[0084] The first tank (210), the second tank (310) of the rainwater storage device (300), and the third tank (510) of the rainwater reuse device (500) are connected so that rainwater above a certain level of multi-stage filtered water is naturally supplied to the rainwater storage device (300) or the rainwater reuse device (500), and the filtered rainwater supply pipe (240) equipped with a multi-way valve (241) is included.

[0086] The first tank (210) is a concrete structure having an internal space for storing rainwater supplied from a rainwater intake device (100) for multi-stage filtration, and is installed underground to minimize the influence of the external environment and secure a certain retention time, thereby enabling stable filtration treatment of rainwater.

[0087] Additionally, as shown in FIG. 3, a first contact-prevention finishing material (220) made of ginkgo wood is installed on the entire inner surface of the first tank (210) in a watertight manner to prevent rainwater being filtered from coming into direct contact with the concrete material.

[0088] For filtration purposes, if the rainwater being stored comes into direct contact with the concrete material of the first tank (210), there is a risk that various toxic substances contained in the concrete will leach into the rainwater being filtered. If toxic substances leach into the rainwater, the rainwater containing concrete toxic substances, even though it has been filtered, is unsuitable for use as various types of water (domestic water, landscaping water, agricultural water for hydroponic cultivation). Therefore, it is necessary to block contact between the rainwater being filtered and the concrete structure, and the configuration for this is a first contact-prevention finishing material (220) made of ginkgo wood.

[0089] The ginkgo wood used as the first contact-prevention finishing material (220) has less cracking and warping compared to other woods and has excellent adsorption capacity for contaminants.

[0090] Accordingly, the first contact-prevention finishing material (220) made of ginkgo wood not only has the function of blocking contact between the filtered rainwater and the concrete structure, but also has the function of ensuring the safety of the filtered rainwater's water quality by adsorbing pollutants contained in the filtered rainwater and ensuring long-term durability.

[0091] Conventionally, chemical coatings are applied to the surface of concrete storage tanks to prevent water inside the tank from coming into direct contact with the concrete. However, while these coatings initially prevent direct contact, they have the disadvantage that over time, the coating decomposes, reducing its ability to prevent water from coming into contact with the concrete, and the chemical components contained in the coating can leach into the water, thereby compromising the safety of the water quality. In contrast, the present invention utilizes ginkgo trees, which possess excellent durability and adsorption capabilities, to block rainwater being filtered from coming into contact with the concrete. This ensures the stability of the water quality of the filtered rainwater used for water supply, even during long-term use.

[0092] Additionally, as shown in FIG. 3, a plurality of filtration filters (230) are installed vertically in the internal space of the first tank (210) so that rainwater supplied from the rainwater intake device (100) is filtered in multiple stages.

[0093] Rainwater supplied from the rainwater intake device (100) is multi-stage filtered through the plurality of filtration filters (230) above. Rainwater supplied from the rainwater intake device (100) is supplied to the first space (①) of the first tank (210), the supplied rainwater is filtered first through the first filtration filter (#1F) and supplied to the second space (②) of the first tank (210), and the supplied rainwater is filtered second through the second filtration filter (#2F) and supplied to the third space (③) of the first tank (210).

[0094] Additionally, as shown in FIG. 3, the first tank (210) is connected to the second tank (310) of the rainwater storage device (300) and the third tank (510) of the rainwater reuse device (500) so that multi-stage filtered rainwater above a certain level is naturally supplied to the rainwater storage device (300) or the rainwater reuse device (500). A filtered rainwater supply pipe (240) equipped with a multi-way valve (241) is installed. When the multi-stage filtered rainwater (rainwater in the third space (③) of the first tank (210)) reaches a certain level or higher, the multi-stage filtered rainwater is naturally discharged to the second tank (310) of the rainwater storage device (300) or the third tank (510) of the rainwater reuse device (500) through the filtered rainwater supply pipe (240) according to the discharge direction of the multi-way valve (241).

[0096] The control device (600) of the present invention is configured to control the rainwater filtration device (200) so that rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater storage device (300) or the rainwater reuse device (500) according to the characteristics of the filtered rainwater, and controls the discharge direction of the multi-way valve (241) so that the filtered rainwater can be discharged to the second tank (310) of the rainwater storage device (300) or the third tank (510) of the rainwater reuse device (500) according to the characteristics of the filtered rainwater, that is, whether the filtered rainwater is rainwater filtered from normal rainwater or rainwater filtered from the later initial rainwater.

[0097] Specifically, referring to FIG. 5, the control device (600) calculates the valve switching time using rainfall information provided by the rainfall sensor (120), controls the multi-way valve (241) so that filtered rainwater (filtered late-stage rainwater) is supplied to the third tank (510) of the rainwater reuse device (500) from the time of elapsed time of the preset ratio of the calculated valve switching time until the valve switching time, and controls the multi-way valve (241) so that filtered rainwater (filtered normal rainwater) is supplied to the second tank (310) of the rainwater storage device (300) from the time of elapsed time of the valve switching time.

[0098] The reason for controlling the multi-way valve (241) so that filtered rainwater is supplied to the third tank (510) of the rainwater reuse device (500) from the time when the preset ratio time (e.g., 20 minutes, which is 2 / 3 of the valve switching time) of the calculated valve switching time (e.g., 30 minutes) has elapsed until the valve switching time (e.g., 30 minutes) is that the filtered rainwater from the time when the preset ratio time (e.g., 20 minutes, which is 2 / 3 of the valve switching time) of the valve switching time (e.g., 30 minutes) has elapsed until the valve switching time is that the initial rainwater from the latter part has been filtered, so it is unsuitable for supplying directly to the second tank (310) of the rainwater storage device (300) for use as various water sources.

[0099] Accordingly, the filtered rainwater (initial rainwater from the latter part of the filtered water) from the time elapsed from the preset ratio of the calculated valve switching time to the valve switching time is supplied to and stored in the third tank (510) of the rainwater reuse device (500), and then supplied to the second tank (310) of the rainwater storage device (300) when there is a shortage of rainwater stored in the second tank (310) of the rainwater storage device (300).

[0100] In addition, the reason for controlling the multi-way valve (241) so that filtered rainwater is supplied to the second tank (310) of the rainwater storage device (300) from the time the valve switching time has elapsed is that the filtered rainwater from the time the valve switching time has elapsed is normal rainwater that has been filtered with almost no sources of contamination, so there is no problem in supplying it directly to the second tank (310) of the rainwater storage device (300) for use in various water sources.

[0101] Therefore, after the valve switching time has elapsed, the filtered rainwater (filtered normal rainwater) is supplied to the second tank (310) of the rainwater storage device (300) and then used as water for various purposes.

[0103] The above rainwater storage device (300) is configured to store rainwater filtered through a rainwater filtration device (200), and as shown in FIG. 4, the rainwater stored in the rainwater storage device (300) is supplied to each water usage location (10) (household water usage location, landscaping water usage location, hydroponic cultivation room) when the pump device (400) described later is operated.

[0104] Specifically, the rainwater storage device (300) is, as shown in FIG. 4,

[0105] A second tank (310), which is a concrete structure having an internal space for storing rainwater supplied from a rainwater filtration device (200), and

[0106] A second contact prevention finishing material (320) made of ginkgo wood, which is installed to ensure watertight sealing over the entire inner surface of the second tank (310) so that rainwater stored in the second tank (310) does not come into contact with the second tank (310) which is made of concrete, and

[0107] A first water level sensor (330) that provides water level information of rainwater stored in a second tank (310) to a control device (600), and

[0108] It is characterized by including a storage rainwater supply pipe (340) connecting the second tank (310) and the pump device (400) so that rainwater stored in the second tank (310) is supplied to the pump device (400).

[0110] The second tank (310) is a concrete structure having an internal space for storing rainwater (multi-stage filtered rainwater) supplied from the rainwater filtration device (200) for supply to a water usage location, and is installed underground to minimize the influence of the external environment.

[0111] Additionally, as shown in FIG. 4, a second contact-prevention finishing material (320) made of ginkgo wood is installed on the entire inner surface of the second tank (310) in a watertight manner to prevent rainwater being stored from coming into direct contact with the concrete material.

[0112] In order to supply water to a place of use, if the stored rainwater comes into direct contact with the concrete material of the second tank (310), there is a risk that various toxic substances contained in the concrete will leach into the stored rainwater. If toxic substances leach into the rainwater, the rainwater containing the concrete toxic substances is unsuitable for use as various types of water (domestic water, landscaping water, agricultural water for hydroponic cultivation). Therefore, it is necessary to block contact between the stored rainwater and the concrete structure, and the configuration for this is a second contact-preventing finishing material (320) made of ginkgo wood.

[0113] The ginkgo wood used as the second contact-prevention finishing material (320) has characteristics such as less cracking and warping compared to other woods and excellent adsorption capacity for contaminants.

[0114] Therefore, the second contact-prevention finishing material (320) made of ginkgo wood not only has the function of blocking contact between the stored rainwater and the concrete structure, but also has the function of ensuring the safety of the stored rainwater's water quality by adsorbing other pollutants contained in the stored rainwater and providing long-term durability.

[0115] Conventionally, chemical coatings are applied to the surface of concrete storage tanks to prevent water inside the tank from coming into direct contact with the concrete. However, while these coatings initially prevent direct contact, they have the disadvantage that over time, the coating decomposes, reducing its ability to prevent contact, and the chemical components contained in the coating can leach into the water, thereby compromising the safety of the water quality. In contrast, the present invention utilizes ginkgo trees, which possess excellent durability and adsorption capabilities, to block stored rainwater from coming into contact with the concrete. This ensures the water quality stability of the stored rainwater, which is used as water for long-term purposes, offering a significant advantage.

[0116] Additionally, as shown in FIG. 4, a first water level sensor (330) is installed in the internal space of the second tank (310) to provide water level information of rainwater stored in the second tank (310) to the control device (600), and the water level information provided by the first water level sensor (330) is used by the control device (600) to control the multi-way valve (241) of the rainwater filtration device (200).

[0117] The control device (600) controls the multi-way valve (241) of the rainwater filtration device (200) so that when normal rainwater filtered through the rainwater filtration device (200) is supplied to the second tank (310) and the water level of the rainwater stored in the second tank (310) is determined to be at a limit level based on the water level information provided by the first water level sensor (330), the normal rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater reuse device (500) instead of the second tank (310).

[0118] As described above, when rainfall begins, the initial rainwater with heavy pollution is discarded, and the initial rainwater with relatively less pollution is filtered through the rainwater filtration device (200) and supplied to the third tank (510) of the rainwater reuse device (500) so that it can be stored as rainwater to prepare for a shortage of stored rainwater in the rainwater storage device (300). Normal rainwater with almost no pollution is filtered through the rainwater filtration device (200) and supplied to the second tank (310) of the rainwater storage device (300) so that it can be used immediately as water. At this time, due to the storage capacity limit of the second tank (310) caused by continuous heavy rain, it may be difficult to store more filtered rainwater (filtered normal rainwater). In this case, the filtered rainwater may flow back into the rainwater filtration device (200) and paralyze the filtration function of the rainwater filtration device (200).

[0119] That is, when the water level of the rainwater stored in the second tank (310) reaches the limit level and the rainwater stored in the second tank (310) flows back into the rainwater filtration device (200), the rainwater filtration device (200) loses its filtration function and furthermore, a malfunction may occur in the rainwater recycling system.

[0120] Accordingly, while normal rainwater filtered through the rainwater filtering device (200) is being supplied to the second tank (310), when the water level of the rainwater stored in the second tank (310) reaches a limit level, the control device (600) controls the multi-way valve (241) installed on the filtered rainwater supply pipe (240) of the rainwater filtering device (200) so that the normal rainwater filtered through the rainwater filtering device (200) is supplied to the third tank (510) of the rainwater reuse device (500) instead of the second tank (310) of the rainwater storage device (300), thereby preventing the loss of the filtration function of the rainwater filtering device (200) due to backflow of filtered rainwater and preventing a malfunction in the rainwater recycling system, and at the same time, the filtered normal rainwater is supplied to the rainwater reuse device (500) without being wasted, so as to prepare for a shortage of stored rainwater in the rainwater storage device (300).

[0121] Additionally, as shown in FIG. 4, a stored rainwater supply pipe (340) connecting the second tank (310) and the pump device (400) is installed so that the stored rainwater in the second tank (310) is supplied to the pump device (400). When the pump device (400) is operated, the rainwater stored in the second tank (310) is transferred to the pump device (400) through the stored rainwater supply pipe (340).

[0123] The above pump device (400) is configured to supply rainwater stored in the rainwater storage device (300) to a water usage location so that the rainwater stored in the rainwater storage device (300) can be used as various types of water, as shown in FIG. 4.

[0124] A first pump (410) that operates when there is a water usage operation so that rainwater stored in the second tank (310) can be used for various purposes, and

[0125] It is characterized by including a multi-pipeline (420) connecting the first pump (410) and the water usage location so that rainwater stored in the second tank (310) is supplied to the water usage location when the first pump (410) is operated.

[0127] The first pump (410) is configured to operate when there is a water usage operation so that rainwater stored in the second tank (310) can be used as various types of water (domestic water, landscaping water, agricultural water for hydroponics). It is preferable that a boost pump be applied, and when there is a water usage operation (e.g., valve opening) at a water usage location (domestic water usage location, landscaping water usage location, hydroponics room), it operates automatically so that the rainwater stored in the second tank (310) can be used as water at the corresponding water usage location.

[0128] The above multi-pipeline (420) is a pipeline connecting the first pump (410) and the water usage location so that rainwater stored in the second tank (310) is supplied to the water usage location when the first pump (410) is operated. As shown in FIG. 4, the multi-pipeline (420) is connected to the first pump (410) and the water usage location in a branched structure so that when the first pump (410) is operated, rainwater stored in the second tank (310) is supplied to the water usage location where water usage operations are performed.

[0130] The above rainwater reuse device (500) is configured to store rainwater to be used when there is a shortage of rainwater stored in the rainwater storage device (300), and to supply the stored rainwater to the rainwater filtration device (200).

[0131] The rainwater stored in the rainwater reuse device (500) can be broadly classified into two types: rainwater used as agricultural water for hydroponic cultivation that is normally discharged from the hydroponic cultivation room, and the latter initial rainwater that is filtered during rainfall as described above. Additionally, normal rainwater that has been filtered may be stored in special situations where the water level of the rainwater stored in the second tank (310) reaches a limit level during rainfall.

[0132] The rainwater stored in the rainwater storage device (300) is also used as agricultural water for hydroponics. Since the rainwater used as agricultural water for hydroponics is relatively cleaner than the rainwater used for other purposes (household water, landscaping water), the rainwater used as agricultural water for hydroponics is fed back to the rainwater reuse device (500) to be stored in the rainwater reuse device (500) as rainwater to be used when there is a shortage of rainwater stored in the rainwater storage device (300).

[0134] Specifically, the rainwater reuse device (500) is, as shown in FIG. 4,

[0135] A third tank (510), which is a concrete structure having an internal space for storing rainwater used as agricultural water for hydroponic cultivation and later initial rainwater filtered through a rainwater filtration device (200), and

[0136] A third contact prevention finishing material (520) made of ginkgo wood, which is installed to ensure watertight sealing over the entire inner surface of the third tank (510) so that rainwater stored in the third tank (510) does not come into contact with the third tank (510) which is made of concrete, and

[0137] A second water level sensor (530) that provides water level information of rainwater stored in a third tank (510) to a control device (600), and

[0138] A natural drainage pipe (540) installed in the third tank (510) to allow rainwater above a certain water level stored in the third tank (510) to be naturally drained to the outside, and

[0139] A second pump (550) that operates under the control of a control device (600) so that rainwater stored in the third tank (510) is supplied to the second tank (310) of the rainwater storage device (300), and

[0140] A rainwater supply pipe (560) connecting the third tank (510), the second pump (550), and the second tank (310) of the rainwater storage device (300), and

[0141] It is characterized by including a plurality of reverse osmosis water purifiers (570) installed on the rainwater supply pipe (560) so that rainwater transported through the rainwater supply pipe (560) is purified during the transport process.

[0143] The third tank (510) is a concrete structure having an internal space for storing rainwater used as agricultural water for hydroponic cultivation and the latter initial rainwater filtered through the rainwater filtration device (200), and is installed underground to minimize the influence of the external environment. As described above, in special situations during rainfall when the water level of the rainwater stored in the second tank (310) of the rainwater storage device (300) reaches a limiting level, filtered normal rainwater may be stored.

[0144] As shown in FIG. 4, a third contact-prevention finishing material (520) made of ginkgo wood is installed on the entire inner surface of the third tank (510) in a watertight manner to prevent rainwater being stored from coming into direct contact with the concrete material.

[0145] When there is a shortage of rainwater stored in the second tank (310) of the rainwater storage device (300), if the rainwater stored in the third tank (510) to be supplied to the second tank (310) comes into direct contact with the concrete material of the third tank (510), there is a risk that various toxic substances contained in the concrete may leach into the stored rainwater. If toxic substances leach into the rainwater, the rainwater containing the concrete toxic substances is unsuitable for use as various types of water (domestic water, landscaping water, agricultural water for hydroponic cultivation). Therefore, it is necessary to block contact between the stored rainwater and the concrete structure, and the configuration for this is a third contact-preventing finishing material (520) made of ginkgo wood.

[0146] The ginkgo wood used as the third contact-prevention finishing material (520) has less cracking and warping compared to other woods and has excellent adsorption capacity for contaminants.

[0147] Therefore, the third contact-prevention finishing material (520) made of ginkgo wood not only has the function of blocking contact between the stored rainwater and the concrete structure, but also has the function of ensuring the safety of the stored rainwater's water quality by adsorbing other pollutants contained in the stored rainwater and providing long-term durability.

[0148] Additionally, as shown in FIG. 4, a second water level sensor (530) is installed in the internal space of the third tank (510) to provide water level information of rainwater stored in the third tank (510) to the control device (600), and the water level information provided by the second water level sensor (530) is used by the control device (600) to control the second pump (550) to be described later.

[0149] Additionally, as shown in FIG. 4, the third tank (510) is equipped with a natural drainage pipe (540) that allows rainwater above a certain level stored in the third tank (510) to be naturally drained to the outside. Normally, agricultural water for hydroponic cultivation discharged from the hydroponic cultivation room and normal rainwater filtered during rainfall, as well as normal rainwater filtered in special situations where the water level of rainwater stored in the second tank (310) of the rainwater storage device (300) reaches a limit level, are introduced into the third tank (510). As the inflow continues, the third tank (510) may also reach a storage capacity limit, and when the storage capacity limit of the third tank (510) is exceeded, a backflow problem occurs in the third tank (510). A natural drain pipe (540) is installed in the third tank (510) to resolve the backflow problem. When the water level of the third tank (510) exceeds a certain level, the stored rainwater in the third tank (510) is naturally drained to the outside through the natural drain pipe (540), thereby preventing the backflow problem from occurring.

[0150] The second pump (550) is configured to operate under the control of a control device (600) so that rainwater stored in the third tank (510) is supplied to the second tank (310) of the rainwater storage device (300). The control device (600) uses water level information provided by a first water level sensor (330) installed in the second tank (310) of the rainwater storage device (300) to operate the second pump (550) when the water level of the rainwater stored in the second tank (310) falls below a preset reference water level. That is, if there is a shortage of rainwater stored in the second tank (310) to be used as water, the second pump (550) is operated so that the rainwater stored in the third tank (510) is transferred to the second tank (310) of the rainwater storage device (300).

[0151] At this time, the control device (600) operates the second pump (550) only when the rainwater stored in the third tank (510) is above a preset base level. If the second pump (550) is operated because the rainwater stored in the second tank (310) of the rainwater storage device (300) is insufficient while the rainwater stored in the third tank (510) is below a preset base level, the second pump (550) may run idle without water transfer and overheat, so the second pump (550) is operated only when the rainwater stored in the third tank (510) is above a preset base level.

[0152] The above-mentioned rainwater supply pipe (560) is configured to connect the third tank (510), the second pump (550), and the second tank (310) of the rainwater storage device (300). As shown in FIG. 4, when the second pump (550) is operated, the rainwater stored in the third tank (510) is transferred to the second tank (310) of the rainwater storage device (300) through the rainwater supply pipe (560) so that it can be used as water.

[0153] The above-mentioned plurality of reverse osmosis water purifiers (570) are configured to be installed on the rainwater supply pipe (560) so that rainwater transported through the rainwater supply pipe (560) is purified during the transport process, and the rainwater stored in the third tank (510) may contain contaminants unsuitable for use as water. For example, rainwater used as agricultural water for hydroponic cultivation may contain nutrient solution components, and the initial rainwater in the later stages of filtration may contain unfiltered non-point source contaminants. Therefore, if the rainwater stored in the third tank (510) is transported as is to the second tank (310) of the rainwater storage device (300), the safety of the water quality of the rainwater stored in the second tank (310) may be reduced.

[0154] As illustrated in FIG. 4, if a plurality of reverse osmosis water purifiers (570) are installed on the rainwater supply pipe (560) for use, the rainwater transferred to the second tank (310) of the rainwater storage device (300) through the rainwater supply pipe (560) is filtered / purified, thereby ensuring the safety of the water quality of the rainwater stored in the second tank (310).

[0156] The above control device (600) is configured to control the rainwater intake device (100) so that rainwater collected through the rainwater intake device (100) is discarded or supplied to the rainwater filtration device (200) depending on the degree of contamination, control the rainwater filtration device (200) so that rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater storage device (300) or the rainwater reuse device (500) depending on the characteristics of the filtered rainwater, and control the rainwater reuse device (500) so that rainwater stored in the rainwater storage device (300) is supplied to the rainwater storage device (300) when there is a shortage of rainwater stored in the rainwater storage device (300). The control characteristics are explained with reference to FIG. 5.

[0157] First, the control characteristics of the control device (600) for the rainwater intake device (100) are explained.

[0158] When the rainwater collection device (100) is configured to include a plurality of rainwater collection boxes (110) equipped with openable doors (111) as shown in A of FIG. 2, the control device (600) normally controls the openable doors (111) installed in the rainwater collection boxes (110) to be in a closed state, and when the rain sensor (120) provides a rain signal, controls the openable doors (111) to be in an open state and simultaneously controls the multi-way valve (130) so that the rainwater (initial rainwater with heavy pollution) being collected through the rainwater collection boxes (110) is discarded.

[0159] After controlling the multi-way valve (130) to discharge rainwater (initial rainwater in the early part), the valve switching time (e.g., 30 minutes) is calculated using rainfall amount information per unit time provided by the rainfall sensor (120). After controlling the multi-way valve (130) to discharge rainwater, when the preset ratio time (e.g., 20 minutes) of the calculated valve switching time has elapsed, the multi-way valve (130) is controlled so that the rainwater being collected (initial rainwater in the later part) is supplied to the rainwater filtration device (200), and when the calculated valve switching time (e.g., 30 minutes) has elapsed, the directionality of the multi-way valve (130) is maintained so that the rainwater being collected (normal rainwater) continues to be supplied to the rainwater filtration device (200).

[0160] Additionally, as illustrated in Fig. 2B, when the rainwater intake device (100) is configured to include a ditch-type rainwater intake pipe (110-1), the control device (600) controls the multi-way valve (130) so that rainwater (initial rainwater with heavy pollution) being taken through the ditch-type rainwater intake pipes (110-1) is discarded when the rain sensor (120) provides a rain signal.

[0161] After controlling the multi-way valve (130) to discharge rainwater (initial rainwater in the early part), the valve switching time (e.g., 30 minutes) is calculated using rainfall amount information per unit time provided by the rainfall sensor (120). After controlling the multi-way valve (130) to discharge rainwater, when the preset ratio time (e.g., 20 minutes) of the calculated valve switching time has elapsed, the multi-way valve (130) is controlled so that the rainwater being collected (initial rainwater in the later part) is supplied to the rainwater filtration device (200), and when the calculated valve switching time (e.g., 30 minutes) has elapsed, the directionality of the multi-way valve (130) is maintained so that the rainwater being collected (normal rainwater) continues to be supplied to the rainwater filtration device (200).

[0163] Next, the control characteristics of the control device (600) for the rainwater filtration device (200) are described.

[0164] The control device (600) calculates a valve switching time (e.g., 30 minutes) using rainfall information provided by a rainfall sensor (120), controls the multi-way valve (241) of the rainwater filtration device (200) so that filtered rainwater (filtered late-stage rainwater) is supplied to the third tank (510) of the rainwater reuse device (500) from the time when the preset ratio time (e.g., 20 minutes) of the calculated valve switching time has elapsed until the valve switching time (e.g., 30 minutes), and controls the multi-way valve (241) of the rainwater filtration device (200) so that filtered rainwater (filtered normal rainwater) is supplied to the second tank (310) of the rainwater storage device (300) from the time when the valve switching time (e.g., 30 minutes) has elapsed.

[0166] Next, the control characteristics of the control device (600) for the rainwater reuse device (500) are described.

[0167] The control device (600) uses water level information provided by the first water level sensor (330) installed in the second tank (310) of the rainwater storage device (300) and the second water level sensor (530) installed in the third tank (510) of the rainwater reuse device (500) to operate the second pump (550) of the rainwater reuse device (500) when the water level of the rainwater stored in the second tank (310) of the rainwater storage device (300) is below a preset reference water level, thereby transferring the rainwater stored in the third tank (510) of the rainwater reuse device (500) to the second tank (310) of the rainwater storage device (300), but operates the second pump (550) only when the rainwater stored in the third tank (510) is above a preset reference water level.

[0169] Although the technical concept of the present invention has been described above together with the accompanying drawings, this is merely an illustrative description of preferred embodiments of the present invention and is not intended to limit the invention. It is obvious that the scope of the rights of the present invention is not limited to the embodiments but includes modifications made by those skilled in the art within the scope of the technical concept of the present invention. Explanation of the symbols

[0171] 10: Water Usage Points 100 : Rainwater intake device 200 : Rainwater filtration device 300 : Rainwater storage device 400 : Pump unit 500: Rainwater Reuse Device 600: Control unit

Claims

Claim 1 In a rainwater recycling system, there is a rainwater intake device (100) that collects falling rainwater and supplies the collected rainwater to a rainwater filtration device (200); a rainwater filtration device (200) that filters the rainwater supplied through the rainwater intake device (100); a rainwater storage device (300) that stores the rainwater filtered through the rainwater filtration device (200); a pump device (400) that supplies the rainwater stored in the rainwater storage device (300) to a water usage location so that the rainwater stored in the rainwater storage device (300) can be used as various water; a rainwater reuse device (500) that stores rainwater to be used when there is a shortage of rainwater stored in the rainwater storage device (300) and supplies the stored rainwater to the rainwater storage device (300); and a rainwater intake device (100) that allows the rainwater collected through the rainwater intake device (100) to be discarded or supplied to the rainwater filtration device (200) depending on the level of contamination. The rainwater filtration device (200) controls the rainwater filtration device (200) so that rainwater filtered through the rainwater filtration device (200) is supplied to a rainwater storage device (300) or a rainwater reuse device (500) according to the characteristics of the filtered rainwater, and controls the rainwater reuse device (500) so that rainwater stored in the rainwater storage device (300) is supplied to the rainwater storage device (300) when there is a shortage of rainwater stored in the rainwater storage device (300). The rainwater filtration device (200) includes a first tank (210), which is a concrete structure having an internal space for storing rainwater supplied from a rainwater intake device (100) for multi-stage filtration, a first contact prevention finishing material (220) made of ginkgo wood that is installed as a watertight finish on the entire inner surface of the first tank (210) so that rainwater being filtered does not come into contact with the first tank (210) made of concrete material, and rainwater supplied from the rainwater intake device (100) multi-stage A plurality of filtration filters (230) vertically installed in the internal space of the first tank (210) to be filtered, and multi-stage filtered rainwater above a certain water level to be naturally supplied to a rainwater storage device (300) or a rainwater reuse device (500).A rainwater recycling system characterized by connecting a first tank (210), a second tank (310) of a rainwater storage device (300), and a third tank (510) of a rainwater reuse device (500), and including a filtered rainwater supply pipe (240) equipped with a multi-way valve (241), wherein the control device (600) calculates a valve switching time using rainfall information provided by a rainfall sensor (120), controls the multi-way valve (241) so that filtered rainwater is supplied to the third tank (510) of the rainwater reuse device (500) from the time of elapsed time of the preset ratio of the calculated valve switching time until the valve switching time, and controls the multi-way valve (241) so that filtered rainwater is supplied to the second tank (310) of the rainwater storage device (300) from the time of elapsed time of the valve switching time. Claim 2 In claim 1, the rainwater collection device (100) comprises a plurality of rainwater collection boxes (110) installed on a building roof or yard to collect falling rainwater and equipped with openable / closeable doors (111) that are controlled to open / close, a rain sensor (120) that provides a rain signal and information on rainfall amount per unit time to a control device (600) when rainfall is detected, and a multi-way valve (130) that controls the rainwater collected through the rainwater collection boxes (110) so that the initial rainwater in the early part is discarded, and the initial rainwater in the later part and normal rainwater are supplied to a rainwater filtration device (200). The control device (600) normally controls the openable / closeable doors (111) installed in the rainwater collection boxes (110) to be in a closed state, and when the rain sensor (120) provides a rainfall signal, controls the openable / closeable doors (111) installed in the rainwater collection boxes (110) to be in an open state. A rainwater recycling system characterized by controlling a multi-way valve (130) so that rainwater collected through rainwater collection boxes (110) is discarded, calculating a valve switching time using rainfall information per unit time provided by a rainfall sensor (120), and controlling the multi-way valve (130) so that rainwater is discarded, and then, when a preset ratio time of the calculated valve switching time has elapsed, controlling the multi-way valve (130) so that the collected rainwater is supplied to a rainwater filtration device (200). Claim 3 In claim 1, the rainwater intake device (100) comprises a plurality of ditch-type rainwater intake pipes (110-1) installed at each eave of a building roof to collect falling rainwater, a rain sensor (120) that provides a rain signal and rainfall amount information to a control device (600) when rainfall is detected, and a multi-way valve (130) that controls the rainwater collected through the ditch-type rainwater intake pipes (110-1) so that the initial rainwater in the early part is discarded, and the initial rainwater in the later part and normal rainwater are supplied to a rainwater filtration device (200). The control device (600) controls the multi-way valve (130) so that the rainwater collected through the ditch-type rainwater intake pipes (110-1) is discarded when the rain sensor (120) provides a rainfall signal, then calculates the valve switching time using the rainfall amount information provided by the rain sensor (120), and the multi-way valve so that the rainwater is discarded. A rainwater recycling system characterized by controlling the multi-way valve (130) so that collected rainwater is supplied to the rainwater filtration device (200) after the valve (130) is controlled and the preset ratio time of the calculated valve switching time has elapsed. Claim 4 delete Claim 5 A rainwater recycling system according to claim 1, wherein the rainwater storage device (300) comprises: a second tank (310), which is a concrete structure having an internal space for storing rainwater supplied from a rainwater filtration device (200); a second contact-prevention finishing material (320) made of ginkgo wood, which is installed as a watertight finish on the entire inner surface of the second tank (310) so that rainwater stored in the second tank (310) does not come into contact with the second tank (310), which is made of concrete; a first water level sensor (330) that provides water level information of the rainwater stored in the second tank (310) to a control device (600); and a stored rainwater supply pipe (340) connecting the second tank (310) and the pump device (400) so that rainwater stored in the second tank (310) is supplied to the pump device (400). Claim 6 A rainwater recycling system according to claim 5, wherein the control device (600) controls the multi-way valve (241) of the rainwater filtration device (200) so that when normal rainwater filtered through the rainwater filtration device (200) is supplied to the second tank (310) and the water level of the rainwater stored in the second tank (310) reaches a limit water level, the normal rainwater filtered through the rainwater filtration device (200) is supplied to the rainwater reuse device (500). Claim 7 A rainwater recycling system according to claim 1, wherein the pump device (400) comprises a first pump (410) that operates when there is a water usage operation so that rainwater stored in the second tank (310) of the rainwater storage device (300) can be used as various water, and a multi-pipeline (420) connecting the first pump (410) and the water usage location so that when the first pump (410) operates, rainwater stored in the second tank (310) is supplied to the water usage location. Claim 8 In claim 1, the rainwater reuse device (500) comprises: a third tank (510), which is a concrete structure having an internal space for storing rainwater used as agricultural water for hydroponic cultivation and the latter initial rainwater filtered through a rainwater filtration device (200); a third contact-prevention finishing material (520) made of ginkgo wood, which is installed as a watertight finish on the entire inner surface of the third tank (510) so that rainwater stored in the third tank (510) does not come into contact with the concrete material of the third tank (510); a second water level sensor (530) that provides water level information of the rainwater stored in the third tank (510) to a control device (600); a natural drainage pipe (540) installed in the third tank (510) so that rainwater above a certain water level stored in the third tank (510) is naturally drained to the outside; and a control device that supplies the rainwater stored in the third tank (510) to the second tank (310) of the rainwater storage device (300). A rainwater recycling system comprising a second pump (550) that operates under the control of a device (600), a rainwater supply pipe (560) connecting a third tank (510), the second pump (550), and the second tank (310) of a rainwater storage device (300), and a plurality of reverse osmosis water purifiers (570) installed on the rainwater supply pipe (560) so that rainwater transported through the rainwater supply pipe (560) is purified during the transport process, wherein the control device (600) operates the second pump (550) when the water level of rainwater stored in the second tank (310) of the rainwater storage device (300) falls below a preset reference water level, but operates it only when the rainwater stored in the third tank (510) is above a preset reference water level.

Images