Rainwater diversion device and rainwater diversion system

Abstract

The utility model discloses a rainwater diversion device which comprises a rainwater diversion mechanism, and the rainwater diversion mechanism is located on the side of a road curbstone and can be opened or closed. The collecting mechanism is located below the rainwater diversion mechanism and used for collecting and diverting rainwater; the monitoring mechanism is exposed in the air, is arranged in the collecting mechanism and is used for monitoring the rainwater quality; the control assembly is arranged in the collecting mechanism in a waterproof mode and used for controlling the rainwater diversion mechanism to be opened or closed. The rainwater diversion device can automatically detect the quality of rainwater and realize automatic diversion of the rainwater according to the detection result of the quality of the rainwater, so that the rainwater with the water quality reaching the standard can be directly utilized, the rainwater with the water quality not reaching the standard can be fed into a rainwater treatment system, and a natural bearing water body of a city can be effectively protected.

Description

Technical Field

[0001] This application relates to the field of rainwater diversion control technology, specifically to a rainwater diversion device and a rainwater diversion system. Background Technology

[0002] Sponge cities, in dealing with rainwater, do not simply drain it away, but rather use a series of measures to achieve the natural accumulation, infiltration, and purification of rainwater. The requirements for sponge city construction stipulate that it must effectively control rainwater runoff pollution, divert and treat rainwater that does not meet water quality standards, and directly recycle and reuse rainwater that meets water quality standards.

[0003] Existing urban stormwater drainage system construction models mainly fall into two categories: the roadside stormwater inlet model, where most rainwater is directly discharged and cannot enter the sponge city infrastructure, thus failing to achieve the sponge city function; and the model without roadside stormwater inlets, where rainwater enters the sponge city infrastructure through open curbs. Because substandard rainwater cannot be collected and further treated in this model, it all enters the sponge city infrastructure, causing pollution. Specifically, substandard rainwater pollutes the natural water bodies such as green belts, natural rivers, and artificial wetlands that serve as sponge city infrastructure. Existing stormwater inlets have a single function, only collecting rainwater. The construction of sponge cities requires stormwater systems to collect and treat substandard rainwater and effectively utilize compliant rainwater, rendering existing stormwater inlets inadequate for the requirements of sponge city construction. Utility Model Content

[0004] In view of this, this application proposes a rainwater diversion device that can automatically monitor rainwater quality and automatically divert polluted rainwater, distinguishing between rainwater with substandard water quality and rainwater with qualified water quality to ensure that rainwater with substandard water quality is not directly discharged into the city's natural water bodies, effectively protecting the city's natural water environment.

[0005] On the one hand, the rainwater diversion device according to this application includes a rainwater diversion mechanism located on the side of the road curb and capable of being opened or closed;

[0006] A collection mechanism, located below the rainwater diversion mechanism, is used to collect and divert rainwater.

[0007] A monitoring agency, exposed to the air and located inside the collection mechanism, is used to monitor rainwater quality; and

[0008] A control component, which is waterproofly disposed inside the collection mechanism, is used to control the opening or closing of the rainwater diversion mechanism.

[0009] Preferably, the rainwater diversion mechanism includes a filter assembly that is flush with or slightly below the road surface and is embedded in the road surface.

[0010] It also includes an opening and closing component located below the filter component, wherein when the opening and closing component is in the open state, the filter component is connected to the collection mechanism.

[0011] Preferably, the opening and closing assembly includes a motor, a control shaft connected to the motor, and a rain shield fixedly connected to the control shaft;

[0012] The opening and closing assembly also includes a support assembly for supporting the rain shelter.

[0013] Preferably, the motor is a tubular motor, and the control shaft has a through hole at its center that can accommodate the tubular motor. The two ends of the tubular motor that can drive the control shaft to rotate are fixedly connected to the two ends of the control shaft.

[0014] The rain shelter is a roller blind, the upper side of which is fixedly installed on the control shaft. The roller blind can be rolled up on the outer circumference of the control shaft or unfolded into a planar shape as the control shaft rotates.

[0015] The support assembly includes a side guide rail and a bottom guide rail. The side guide rail consists of two pieces that are symmetrical and parallel to each other. The bottom guide rail is vertically fixed to the side guide rail.

[0016] Preferably, the side guide rail and the bottom guide rail have a concave structure and are provided with grooves that can accommodate the roller blind and whose openings face the roller blind;

[0017] The two sides of the roller blind perpendicular to the control shaft can move along the inner surface of the groove of the side guide rail, and the bottom side of the roller blind can be inserted into the groove of the bottom guide rail.

[0018] Preferably, the motor is a miniature stepper motor or a servo motor;

[0019] The support assembly is a rectangular frame fixed as one piece, the rain shelter is a Venetian blind, and the support rod of the Venetian blind is rotatably installed on the inner side of the long side of the rectangular frame; the support rod has a first arm and a second arm at a certain angle, the end of the first arm is fixedly installed on the control shaft, and the end of the second arm is fixedly connected to the Venetian blind blades.

[0020] The control axis is moved by the micro stepper or servo motor, causing the venetian blind to open or close into a planar shape.

[0021] The venetian blind has matching sealing components on both the upper and lower sides of the venetian slats.

[0022] Preferably, the opening and closing assembly further includes a motor housing for sealing and waterproofing, the motor housing including a cover and an end shell; the cover surrounds the motor in the circumferential direction, and the shape of the end shell matches the end shape of the cover and is fixedly disposed at the end of the motor.

[0023] Preferably, the collection mechanism includes a rainwater well, which is disposed below the opening and closing assembly, and the shape of the well opening matches the external shape of the opening and closing assembly;

[0024] It also includes rainwater pipes, one end of which is connected to the internal cavity of the rainwater well, and the other end is connected to the drainage treatment system.

[0025] Preferably, the monitoring mechanism is a water quality monitor with a sensor exposed in the internal cavity of the rainwater well. The water quality monitor is electrically connected to the control component or is integrally formed with the control component and fixed to the bottom of the rainwater well.

[0026] The control component includes a switching device and a controller. The switching device is electrically connected to the motor and the controller. The control component is sealed inside the bottom wall of the rainwater well or housed within a waterproof cover.

[0027] On the other hand, the rainwater diversion system according to this application includes the rainwater diversion device described above, as well as an open curb and a sponge facility; the open curb is set on the road curb, a rainwater inlet is provided on the open curb, the rainwater diversion device is provided on one side of the rainwater inlet, and a sponge facility or other rainwater utilization facility is provided on the other side.

[0028] The rainwater diversion device according to this application can automatically detect rainwater quality and automatically divert rainwater based on the detection results. Rainwater that meets quality standards can be directly collected and utilized, while rainwater that does not meet standards can be sent to a rainwater treatment system. This rainwater diversion device can automatically classify rainwater and also has the advantages of being assembleable, disassembleable, and easy to maintain. Furthermore, using this rainwater diversion system can effectively protect the green vegetation within "sponge city" facilities, protect the city's natural water bodies, promote the recycling of water resources in sponge cities, and greatly improve water resource utilization efficiency.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0031] Figure 1 This is a three-dimensional schematic diagram of the first specific implementation of the rainwater diversion mechanism;

[0032] Figure 2 This is a top view of the first specific implementation of the rainwater diversion system;

[0033] Figure 3 This is a cross-sectional view (AA) of the first specific implementation of the rainwater diversion system;

[0034] Figure 4 This is a BB cross-sectional view of the first specific implementation of the rainwater diversion system;

[0035] Figure 5 This is a three-dimensional schematic diagram of the second specific implementation of the rainwater diversion mechanism.

[0036] Figure Numbers: 1-Rainwater diversion mechanism; 11-Filter assembly; 12-Opening and closing assembly; 121-Motor; 122-Control shaft; 123-Rain shelter; 124-Side guide rail; 125-Bottom guide rail; 126-Motor cover; 1261-Cover; 1262-End shell; 127-Sealing assembly; 128-Support rod; 129-Support assembly; 1291-Frame; 2-Collection mechanism; 21-Rainwater well; 22-Rainwater pipe; 3-Monitoring mechanism; 4-Control assembly; 41-Switch device; 42-Controller; 5-Cutting stone; 6-Opening curb stone; 7-Sponge facility; Detailed Implementation

[0037] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the specific embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0038] The technical solution of this application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, the rainwater diversion device according to the first embodiment of this application includes a rainwater diversion mechanism 1, which is located on the side of the road curb and can be opened or closed; a collection mechanism 2, which is located below the rainwater diversion mechanism 1 for collecting and diverting rainwater; a monitoring mechanism 3, which is exposed to the air and is disposed inside the collection mechanism 2 for monitoring rainwater quality; and a control component 4, which is waterproofly disposed inside the collection mechanism 2 for controlling the opening or closing of the rainwater diversion mechanism 1.

[0040] This specific embodiment includes a double-layered rainwater diversion mechanism 1, a monitoring mechanism 3, and a control component 4. The control component 4 is used to control the opening or closing of the opening and closing component 12 of the rainwater diversion mechanism 1, thereby realizing the rainwater diversion function.

[0041] like Figure 2 , Figure 3 , Figure 4 As shown, during use, when the water quality is substandard, the opening / closing component 12 is open, and rainwater is collected through the collection mechanism 2 and then discharged through the rainwater pipe for treatment. This enables rainwater recycling, alleviating the pressure on urban water supply and contributing to the sustainable development of the city. When the water quality meets the standards, the control component 4 controls the opening / closing component 2 to close, preventing rainwater from entering the rainwater well 21. Instead, the rainwater flows through the open curb 6 into the sponge facility 7 within the green belt. In modern urban construction, the rational layout of urban green spaces, water systems, roads, and other infrastructure, reserving sufficient space for rainwater absorption and storage, and planning and constructing more parks, wetlands, and rain gardens, along with more "sponge facilities," can effectively reduce the urban heat island effect, decrease energy consumption, and achieve sustainable urban development.

[0042] like Figure 2 As shown, the rainwater diversion mechanism 1 includes a filter component 11. Specifically, the filter component 11 has a perforated structure. The filter component 11 is flush with or slightly lower than the road surface and is embedded in the road surface. Rainwater can pass smoothly through the perforations, while large impurities and foreign objects in the rainwater will be blocked on the filter component 11 and will not enter the collection mechanism 2.

[0043] like Figure 3 As shown, the opening and closing component 12 is located below the filter component 11. When the opening and closing component 12 is in the open state, the holes on the filter component 11 are connected to the cavity of the collection mechanism 2. Rainwater can enter the collection mechanism 2 through the filter component 11 and the opening and closing component 12. The collected rainwater will submerge the water quality monitor in the collection mechanism 2. The sensor of the water quality monitor can assess the quality of the water body, measure the concentration of suspended matter in the water, determine the living environment of aquatic organisms, and monitor the degree of pollution.

[0044] like Figure 1 As shown, in the first specific embodiment of this application, the motor 121 is a tubular motor, and the control shaft 122 has a through hole at its center that can accommodate the tubular motor. The two ends of the tubular motor that can drive the control shaft 122 to rotate are fixedly connected to the two ends of the control shaft 122.

[0045] Unlike traditional motors, tubular motors employ a tubular conductor layout. This design allows for more even current flow along the conductors and reduces current loss. This structure also makes the motor more compact, suitable for environments with limited space. Tubular motors offer several advantages over traditional motors. First, due to their unique structural design, tubular motors have higher energy conversion efficiency and lower energy loss. Second, compared to traditional motors, tubular motors are smaller and lighter, making them suitable for installation in tight spaces. Furthermore, tubular motors have a longer lifespan, lower maintenance costs, and higher reliability.

[0046] The rain shelter 123 is a rectangular flat roller blind made of a flexible and waterproof material. The upper side of the roller blind is fixedly installed on the control shaft 122. The roller blind can be rolled up on the outer circumference of the control shaft 122 or unfolded into a flat shape as the control shaft 122 rotates.

[0047] The support assembly 129 includes a side guide rail 124 and a bottom guide rail 125. There are two side guide rails 124, which are symmetrical and parallel to each other. The bottom guide rail 125 is vertically fixed to the side guide rails 124.

[0048] Furthermore, the side guide rail 124 and the bottom guide rail 125 are concave structures, with grooves that can accommodate the roller blind and whose openings face the roller blind; the two sides of the roller blind that are perpendicular to the control shaft 122 can move along the inner surface of the groove of the side guide rail 124, and the bottom side of the roller blind can be inserted into the groove of the bottom guide rail 125.

[0049] In use, the length of the roller blind matches or is slightly less than the distance between the opposite surfaces of the grooves of the two symmetrically arranged side guide rails 124. Thus, as the control shaft 122 rotates and unfolds, the lower sides of the roller blind are supported by the lower sidewalls of the grooves in the side guide rails 124, providing a certain load-bearing capacity and preventing sudden slippage, ensuring the roller blind remains horizontal during unfolding. When the tubular motor reaches the predetermined limit position, the bottom side of the roller blind inserts precisely into the groove of the bottom guide rail 125, supported by the lower sidewall of the groove. That is, when the rainwater quality meets standards, all four sides of the roller blind are supported when fully unfolded. The roller blind is made of thin-sheet alloy stainless steel, ensuring that the opening and closing assembly 12 has a certain load-bearing capacity, capable of supporting a certain amount of rainwater flowing through the rainwater diversion device.

[0050] like Figure 5 The second specific embodiment of the rainwater diversion mechanism is shown, and the motor 121 is a micro stepper motor or servo motor.

[0051] The support component 129 is a rectangular frame 1291 fixed as one piece. The frame 1291 is used to fix the upper filter component 11 on the one hand, and can also serve as a carrier for fixing the louver blades on the other hand.

[0052] The rain shelter 123 is a Venetian blind. The support rod 128 of the Venetian blind uses a cylindrical pin as the rotation center and is rotatably installed on the inside of the long side of the rectangular frame 1291. The support rod 128 has a first arm and a second arm at a certain angle. The end of the first arm is fixedly installed on the control shaft 122, and the end of the second arm is fixedly connected to the Venetian blind slats.

[0053] The control axis 122 is moved by a micro stepper or servo motor, so that the venetian blinds open or close into a planar shape.

[0054] The upper and lower sides of the venetian blinds are equipped with matching sealing components 127.

[0055] Specifically, the dimensions of the flat plate formed by the rotation of the Venetian blind are adapted to the dimensions of the inner surface of the frame 1291, and the end of the second arm of the support rod 128 is fixedly connected to the bottom of the Venetian blind assembly at a vertical angle.

[0056] The motor 121 is electrically connected to the control component 4. When the water quality meets the standard, the motor 121 drives the control shaft 122 to move, thereby causing the support rod 128 to rotate around the cylindrical pin at the junction of the first and second arms as the rotation center, thus causing each louver blade to rotate to a position where they are connected end-to-end to form a flat plate shape. At this time, the matching sealing components 127 on the upper and lower sides of the louver blades are in a mutually coupled state. In addition, the outer dimensions of the flat plate formed by the rotation of the louver are adapted to the internal dimensions of the frame 1291, giving the louver a waterproof function. The louver blades are made of strong stainless steel or plastic, ensuring that the opening and closing component 12 has a certain load-bearing capacity and can withstand a certain amount of rainwater flowing through the rainwater diversion device. The rainwater diversion mechanism 1 of the second embodiment of this application has the advantages of rapid opening and closing response and waterproof and rustproof properties.

[0057] In the first and second embodiments of the rainwater diversion mechanism 1 of this application, the opening and closing assembly 12 further includes a motor housing 126 for sealing and waterproofing. The motor housing 126 includes a cover 1261 surrounding the motor 121 in the circumferential direction and an end shell 1262 that matches the shape of the end of the cover 1261 and is disposed at the end of the motor 121.

[0058] The cover 1261 and the end cover 1262 are fixed by welding. The weld is dense and waterproof. The motor cover 126 forms a protective housing for the motor 121 and is waterproof.

[0059] like Figure 1 As shown, the cover 1261 is made of a single piece of waterproof and rustproof material, specifically by bending both ends of a single sheet of material inwards, resulting in a U-shaped structure. It protects the motor 121 from above and to the left and right. In this specific embodiment, the end shell 1262 is rectangular, matching the shape of the opening at the end of the cover 1261. The end shell 1262 and the cover 1261 are welded together to prevent rainwater from seeping into the motor 121 and causing motor malfunction.

[0060] like Figure 3 , Figure 4 The collection mechanism 2 shown includes a rainwater well 21, which is located below the opening and closing assembly 12. The shape of the well opening matches the external shape of the opening and closing assembly 12, both being rectangular.

[0061] It also includes a rainwater pipe 22, one end of which is connected to the internal cavity of the rainwater well 21, and the other end is connected to the drainage treatment system.

[0062] like Figure 3 , Figure 4 As shown, in the first specific embodiment of the rainwater diversion system, an open curbstone 6 with a rainwater inlet is set downstream of the rainwater diversion device. When the opening and closing component 12 of the rainwater diversion device is closed, qualified rainwater flows directly into the green belt, river, or pond, which serves as a sponge city facility, through the rainwater inlet. This allows the city to function like a sponge, exhibiting good "elasticity" in adapting to environmental changes and responding to natural disasters. It absorbs, stores, infiltrates, and purifies rainwater during rainfall, and releases and utilizes the stored water when needed. The rainwater diversion device of this application ensures that only qualified rainwater enters the sponge facility, protecting the green plants and natural water bodies within the sponge facility and contributing to the sustainable construction of sponge cities. The rainwater pipe 22 is located at the bottom of the rainwater well 21. Rainwater that does not meet the quality standards enters the rainwater well 21 directly through the open opening and closing component 12 and is discharged through the rainwater pipe 22 for further treatment.

[0063] In the first and second specific embodiments of the rainwater diversion device of this application, the monitoring mechanism 3 is a water quality monitor with the sensor exposed in the internal cavity of the rainwater well 21, which is set at the bottom of the rainwater well 21, and the water quality monitor is integrated with the control component 4.

[0064] The control component 4 includes a switch 41 and a controller 42. The switch 41 is electrically connected to the motor 121 and the controller 42. The control component 4 is sealed inside the bottom wall of the rainwater well 21.

[0065] The water quality monitor is installed at the bottom of the rainwater well 21, with the sensor part exposed to the air. When rainwater flows into the rainwater well 21 and submerges the sensor part, the sensor can detect various indicators of the rainwater quality.

[0066] like Figure 4 The rainwater diversion system shown includes a rainwater diversion device, an open curb 6, and a sponge facility 7. The open curb 6 is set on the road curb, and a rainwater inlet is set on the open curb 6. A rainwater diversion device is set on one side of the rainwater inlet, and a sponge facility 7 is set on the other side.

[0067] The rainwater diversion device of this application can automatically detect rainwater quality and automatically divert rainwater according to the detection results. Rainwater that meets quality standards can be directly utilized, while rainwater that does not meet standards can be sent to a rainwater treatment system. This effectively protects the city's natural water bodies and alleviates water scarcity. The rainwater diversion system of this application solves the problem in existing sponge city construction where rainwater cannot be diverted at the source of the sponge facilities on roads. It avoids problems such as rainwater clogging of the six filter facilities at the open curb, and reduces the adverse effects of substandard rainwater on the sponge facilities, ensuring their sustainability.

[0068] The preferred embodiments of this application have been described in detail above. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0069] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0070] Furthermore, various different embodiments of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed by this utility model.

Claims

1. A stormwater diversion device characterised in that, The rainwater diversion device comprises: a rainwater diversion mechanism (1) located at the side of the road curb and capable of being opened or closed; a collecting mechanism (2) located below the rainwater diversion mechanism (1) for collecting and diverting rainwater; a monitoring mechanism (3) exposed to the air and arranged inside the collecting mechanism (2) for monitoring the quality of rainwater; and a control assembly (4) arranged inside the collecting mechanism (2) in a waterproof manner for controlling the opening or closing of the rainwater diversion mechanism (1). The rainwater diversion mechanism (1) comprises a filter assembly (11) flush with or slightly lower than the road surface and embedded in the road surface; 2. The stormwater diverter of claim 1, wherein, and an opening and closing assembly (12) located below the filter assembly (11), which is in communication with the collecting mechanism (2) when the opening and closing assembly (12) is in an open state.

3. The rainwater diversion device according to claim 2, wherein: the opening and closing assembly (12) comprises a motor (121), a control shaft (122) connected to the motor (121), and a rain shielding member (123) fixedly connected to the control shaft; the rainwater diversion device further comprises a support assembly (129) for supporting the rain shielding member (123). The motor (121) is a tubular motor, the control shaft (122) is provided with a through hole in the center capable of accommodating the tubular motor, and the two ends of the tubular motor are fixedly connected to the two end heads of the control shaft (122) to drive the control shaft (122) to rotate; the rain shielding member (123) is a roller blind, the upper side of the roller blind is fixedly installed on the control shaft (122), and the roller blind can be wound on the outer peripheral surface of the control shaft (122) or unfolded into a planar shape with the rotation of the control shaft (122).

4. The stormwater diverter of claim 3, wherein, 5. The rainwater diversion device according to claim 4, wherein: the support assembly (129) comprises a lateral guide rail (124) and a bottom guide rail (125), the lateral guide rail (124) is symmetrical and parallel to each other, and the bottom guide rail (125) is fixedly arranged vertically to the lateral guide rail (124); the lateral guide rail (124) and the bottom guide rail (125) are concave structures provided with grooves capable of accommodating the roller blind and having opening faces facing the roller blind; the two side edges of the roller blind perpendicular to the control shaft (122) can move along the inner surfaces of the grooves of the lateral guide rail (124), and the bottom side edge of the roller blind can be inserted into the groove of the bottom guide rail (125). The motor (121) is a micro-step or servo motor. ​ 6. The stormwater diverter of claim 3, wherein, ​ The support assembly (129) is a fixed integral rectangular frame (1291), the rain shield (123) is a shutter, the support rod (128) of the shutter is rotatably mounted on the inner side of the long side of the rectangular frame (1291); the support rod (128) has a first branch arm and a second branch arm, the end of the first branch arm is fixedly mounted on the control shaft (122), and the end of the second branch arm is fixedly connected with the shutter blade of the shutter; The control shaft (122) is controlled to move by the micro stepping or servo motor, so that the shutter is opened or closed into a planar shape; The upper and lower sides of the shutter blade are provided with matched sealing assemblies (127).

7. The stormwater diverter of claim 5 or 6, wherein, The opening and closing assembly (12) further comprises a motor cover (126) for sealing and waterproofing, the motor cover (126) comprises a cover shell (1261) and an end shell (1262), the cover shell (1261) circumferentially surrounds the motor (121), and the end shell (1262) is fixedly arranged at the end of the motor (121) and has a shape matched with the shape of the end of the cover shell (1261).

8. The rainwater diversion device according to claim 7, characterized in that, The collecting mechanism (2) comprises a rainwater well (21) arranged below the opening and closing assembly (12) and having a well opening shape matched with the outer shape of the opening and closing assembly (12); and a rainwater pipeline (22) having one end connected to the internal cavity of the rainwater well (21) and the other end connected to a drainage treatment system.

9. The stormwater diverter of claim 8, wherein, The monitoring mechanism (3) is a water quality monitor exposed to the internal cavity of the rainwater well (21), which is electrically connected to or integrally arranged with the control assembly (4) and fixed to the bottom of the rainwater well (21); The control assembly (4) comprises a switch device (41) and a controller (42), the switch device (41) is electrically connected to the motor (121) and the controller (42), and the control assembly (4) is sealingly arranged in the bottom wall of the rainwater well (21) or in a waterproof cover.

10. A stormwater diversion system characterised by, The rainwater diversion system comprises the rainwater diversion device according to any one of claims 1-9, and further comprises an open curbstone (6) and a sponge facility (7); the open curbstone (6) is arranged on a road pavement, a rainwater inlet is arranged on the open curbstone (6), one side of the rainwater inlet is provided with the rainwater diversion device, and the other side is provided with the sponge facility (7) or other rainwater utilization facility.

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