Parking shed rainwater efficient utilization system and method

Abstract

The invention discloses a parking shed rainwater efficient utilization system and method, and relates to the technical field of parking shed water circulation. Comprising a solar panel roof rainwater collecting and treating unit, a code scanning self-service car washing unit and a car washing wastewater treating and recycling unit. Rainwater collected by a V-shaped parking shed photovoltaic panel roof with a blocked edge is filtered by a filter screen below, is collected to an initial rainwater pool through a water collection vertical pipe, and is collected into a reservoir through a first filter; a first water suction pump in the code scanning self-service car washing unit pumps water in a water storage tank, the water is supplied to a car washing gun through the first water suction pump, waste water generated after car washing is collected through a slope-shaped rainwater grate, and rainwater completely immerses a degreasing filter material filled with three layers below; the wastewater is subjected to targeted second-time degreasing and filtering treatment, the cleanliness of an irrigation water source is guaranteed through two-time degreasing treatment, purified water flows into a clean water pool, and sprinkling irrigation equipment is used for regularly sprinkling water to surrounding green plants. Water resource shortage in arid areas is effectively relieved, and the pressure of a municipal drainage system is relieved.

Description

Technical Field

[0001] The present invention is a system and method for efficiently utilizing rainwater in a parking shed. The electricity used by the entire system is provided by converting solar energy from the photovoltaic panels of the parking shed into electricity. It is a system that reduces the drainage pressure of the drainage system around the open-air parking lot, avoids environmental pollution, and improves the reuse rate of rainwater. Background Art

[0002] As a common ground parking rain shelter equipment, most of the rainwater in parking sheds is directly discharged into the municipal drainage system through drainage pipes. Rainwater flows into the drainage pipe along the slope of the roof, and then enters the ground drainage ditch or drainage system. In heavy rain weather, the amount of rainwater is large, and the municipal drainage system may be overwhelmed, resulting in poor drainage or urban waterlogging. Rainwater passing through the surface of the parking shed may carry pollutants such as mud, dust, and oil. Direct entry into the drainage system may pollute the water body, especially when there are cars in the parking shed, the oil pollution problem is more serious. For some simple parking sheds without a special drainage system, rainwater will flow directly from the roof to the ground, and then penetrate into the ground or flow along the road. This will cause muddy and waterlogging on the ground for a long time, and even erode the foundation and surrounding environment, affecting the walking and parking experience. If the parking shed is near a pollution source (such as oil leakage from parked vehicles, chemical leakage, etc.), rainwater may infiltrate into the ground with pollutants, affecting the groundwater quality. In summary, the current parking shed rainwater runoff process has the following problems:

[0003] (1) Overburdening of drainage system (2) Pollutant discharge (3) Ineffective use of rainwater resources

[0004] In view of the above problems, how to reduce drainage pressure, avoid environmental pollution, and improve the reuse rate of rainwater has become a major challenge facing current technical issues. However, there is currently no device or system that can effectively process and utilize rainwater resources in parking sheds.

[0005] Therefore, it is very necessary to develop an optimized drainage design that can collect and effectively utilize rainwater while also bringing environmental protection to the surrounding area. This can not only effectively reduce drainage pressure and avoid environmental pollution, but also increase the reuse rate of rainwater. Summary of the invention

[0006] In order to solve the pollution to the ground caused by rainwater discharge from parking sheds and the pressure on the municipal drainage system, the present invention proposes a system and method for efficiently utilizing rainwater from parking sheds.

[0007] The system comprises a solar panel roof rainwater collection and processing unit, a QR code scanning self-service car washing unit and a car washing wastewater treatment and reuse unit; the solar panel roof rainwater collection and processing unit comprises: a parking shed photovoltaic panel roof (1-1) with an overall V-shaped cross section, a plane filter (1-2) is provided in the middle and lower part of the V-shaped parking shed photovoltaic panel roof (1-1), plugging (1-3) is provided at both ends of the V-shaped parking shed photovoltaic panel roof (1-1), and downward water collection vertical pipes are provided at the bottom of both ends of the V-shaped parking shed photovoltaic panel roof (1-1). The pipe (1-4) is connected to the initial rainwater pool (1-5) through a guide pipe, and the initial rainwater pool is connected to the first rainwater filter (1-6) (preferably a distributed filter) and a water storage tank (1-7) in sequence through a pipeline; a V-shaped photovoltaic panel roof with an end plugged is configured to collect rainwater, the filter is located at the bottom of the photovoltaic panel roof, and a row of water collection vertical pipes are connected below, and a guide pipe (adopted) with an inclination angle of 1.5% (obtained according to the "Design Code for Building Water Supply, Drainage and Heating Engineering" (GB 50015)) is connected below the water collection vertical pipe, and the guide pipe directly leads to the upper end of one side of the initial rainwater pool (1-5), and the upper end of the other side of the initial rainwater pool (1-5) is connected to the upper end of the first rainwater filter (1-6) (preferably a distributed filter) through a conduit, and the clean water passes through the upper end of the other side of the first rainwater filter (1-6) (preferably a distributed filter) and flows through the water storage tank (1-7) through the conduit;

[0008] The QR code scanning self-service car washing unit includes a QR code car washing machine (2-1) equipped with a first water pump and a car washing gun, a car washing platform (2-2), an oil filter device (2-4), and a sedimentation tank (2-5). The water inlet pipe of the first water pump of the QR code car washing machine is connected to the water reservoir (1-7), and the water outlet pipe of the first water pump is connected to the car washing gun. The first water pump and the car washing gun are equipped with a QR code scanning payment device (this is a mature technology, and there is no specific limitation, as long as the scanning payment can be realized and the car washing gun can spray water to wash the car); the car washing platform (2-2) is a prism-shaped high platform, and the upper end accommodates a parking space. The side of the prism is a sloped rainwater grate (2-3), and rainwater and wastewater from washing a car with a car washing gun can be collected. Below the rainwater grate (2-3) is a replaceable oil filter device (2-4) containing three layers of filter material, and below the oil filter device (2-4) is a sedimentation tank (2-5);

[0009] The car wash wastewater treatment and reuse unit comprises a second filter (3-1) (preferably a distributed filter), a clean water tank (3-2), a second pump (3-3), and an irrigation and spraying device (3-4). The sedimentation tank (2-5) is connected to the clean water tank (3-2) via the second filter (3-1), and the clean water tank (3-2) is connected to the irrigation and spraying device (3-4) via a pipeline via the second pump (3-3).

[0010] The rainwater collected by the V-shaped photovoltaic panel roof (1-1) flows into the initial rainwater pool (1-5) by gravity.

[0011] The structure of the first rainwater filter: the overall structure is a vertical structure, a downward interception basket (4-2) is provided at the lower end of the bottom of the vertical cavity, an integral independent and replaceable filter basket (4-4) is provided in the middle and lower part of the vertical cavity, and the filter basket (4-4) is filled with filter material (4-3); the water outlet (4-5) is located on the upper side of the cavity, and the water inlet pipe (4-1) inlets water from the side below the filter basket (4-4), and the side water inlet, that is, the water inlet end pipe (4-1) adopts the side cut-in connection method, and the physical position of the water inlet end of the water inlet pipe (4-1) is flush with the water outlet.

[0012] The structure of the second filter: the overall structure is a vertical cavity structure, the water inlet (5-1) is located on the upper side of the cavity, an oil floating plate (5-6) is set at the upper end of the cavity to isolate oil pollution, and the oil floating plate (5-6) is lower than the water inlet (5-1); a downward interception basket (5-2) is set at the lower end of the bottom of the vertical cavity. When entering the second filter, the large filter residue has been precipitated in the sedimentation tank, and only relatively small suspended particles are left. An integral, independent and replaceable filter basket (5-5) is set in the middle and lower part of the vertical cavity, and the filter basket (5-5) is filled with filter material (5-4); the outlet pipe (5-1) discharges water from the side below the filter basket (5-5).

[0013] The oil filter device (2-4) comprises at least three layers, which include from top to bottom: the first layer: a coarse filter layer, which uses synthetic fiber materials such as polypropylene and polyester to capture relatively large particle impurities; the second layer: an oil-water separation layer, which uses hydrophobic materials such as polyethylene, hydrophobic foam, etc., and is specifically used to absorb oil; the third layer: a fine filter layer, which uses activated carbon or non-woven fabric to further remove residual oil and fine particles.

[0014] The first rainwater filter (1-6) (preferably a dispersed filter) and the second filter (3-1) (preferably a dispersed filter) have different filter materials and different inlet and outlet ends. The first rainwater filter (1-6) uses quartz sand, anthracite, ceramsite, activated carbon and other materials with strong pollution interception and adsorption capabilities and good wear resistance as filter materials. It can quickly and efficiently process impurities in rainwater. The second filter (3-1) uses fiber balls, modified fiber balls and other materials. The fiber balls have good elasticity, do not float to the water surface, and have a fast filtration speed. It can effectively remove suspended matter, oil stains, organic matter, colloid particles, microorganisms, etc. in the water. The first filter water outlet (4-5) is located on the upper side of the cavity, and the water inlet pipe (4-1) takes in water from the side below the filter basket (4-4), thereby settling the filter residue to the greatest extent. The second filter water inlet (5-1) is located on the upper side of the cavity, and an oil floating plate (5-6) is arranged inside the cavity to isolate oil pollution. The water outlet pipe (5-3) discharges water from the side below the filter basket (5-5). When the car wash wastewater and rainwater enter the second filter, the large filter residue has been settled in the sedimentation tank, and only small suspended particles enter.

[0015] The specific technical solutions are:

[0016] In the solar panel roof rainwater collection and processing unit, the rainwater collected by the V-shaped parking shed photovoltaic panel roof with edge blocking (1-3) is filtered through the filter (1-2) below to remove large particles of impurities, and the collected rainwater is collected into the diversion pipe through the water collection vertical pipe (1-4), and then collected into the initial rainwater pool (1-5) by the diversion pipe. When the water in the initial rainwater pool is full, it is considered that the dirty water has been collected and the remaining rainwater is relatively clean rainwater. Rainwater enters the first filter (1-6) through the outlet pipe, and the rainwater is filtered. The dirt remains in the filter, and the clean water flows into the reservoir (1-7); when the customer needs to wash the car, the first pump in the self-service car wash unit draws water from the reservoir, and supplies it to the car wash gun through the first pump. The customer can set the gear to adjust the car wash time; the wastewater after car washing and rainwater from normal rainfall are collected by the sloped rainwater grate (2-3) in the car wash wastewater treatment and reuse unit, and the rainwater completely immerses the three-layer degreasing filter material (2-4) filled below. The first layer: coarse filter layer: synthetic fiber materials such as polypropylene and polyester are used to capture larger particle impurities. The second layer: oil-water separation layer: hydrophobic materials such as polyethylene and hydrophobic foam are used, which are specially used to absorb oil. The third layer: fine filter layer: activated carbon or non-woven fabric is used to further remove residual oil and fine particles. The particles are precipitated in the sedimentation tank, and then the wastewater and rainwater enter the second filter (3-1), and the wastewater is subjected to a targeted second degreasing filtration treatment. The two degreasing treatments ensure the cleanliness of the irrigation water source. The clean water flows into the clear water tank, and the surrounding green plants are regularly watered by the sprinkler equipment (3-4).

[0017] Furthermore, the solar panel roof rainwater collection processor is composed of a photovoltaic panel (1-1), an aluminum plate (1-3), and a filter (1-2).

[0018] Furthermore, the initial rainwater pool (1-5) is composed of a rectangular water storage tank with a length of 3 meters, a height of 1 meter and a width of 1 meter. It is generally believed that the 3 mm of rainwater that fell in the early stage is unclean water. The water flows in from the inlet at the upper end of the side wall through the water inlet pipe. When the dirty water is full, it overflows from the outlet at the upper end of the other side and flows into the decentralized rainwater filter.

[0019] Furthermore, the first filter has a unique rainwater treatment mechanism. Rainwater cuts in from the side of its water inlet end (4-1) and connects to the bottom. This special water inlet method allows the water flow to flow into the interior along the tangent direction of the inner wall of the processor, thereby forming two special water flow forms, vortex flow and radial flow, inside. In this water flow state, particles, silt, etc. are deposited at the bottom due to gravity, while those larger impurities are effectively intercepted by a specially set sewage interception basket (4-2). The sewage interception basket is designed to be very convenient and can be taken out regularly for cleaning. At the same time, the sludge accumulated at the bottom can be easily sucked out with the help of a sewage pump when the filter material of the processor is cleaned. After the important link of cyclone separation, the rainwater continues to flow upward and then enters the filter basket (4-4) area. A variety of (4-3) special filter materials are placed in the filter basket (4-4), and these filter materials are like precise filter screens and adsorbents. They can not only filter out those finer particles, but also have excellent adsorption and filtration capabilities for suspended matter, macromolecular organic matter, colloids and other impurities in the water. Through such a series of complex and orderly processes, the filter finally outputs ideal rainwater that meets the requirements, perfectly achieving the processing function of the processor and providing a strong guarantee for the purification and reuse of rainwater.

[0020] Furthermore, the water reservoir (1-7) is disinfected regularly, and the purpose of disinfection is achieved by adding disinfection tablets into the water reservoir.

[0021] Furthermore, the car washing machine (2-1) is equipped with a high-power water pump and a car washing gun. The customer controls the length of the car washing time by scanning a code to adjust the gear. When an order is placed, the car washing machine is powered on and automatically powered off when the order is completed.

[0022] Furthermore, the oil removal filter material (2-4) contains three layers of filter material, namely a coarse filter layer, an oil-water separation layer, and a fine filter layer. The filter material is located below the rainwater grate and can be replaced regularly.

[0023] Furthermore, the sedimentation pond (2-5) is rich in a large amount of chemical elements required by vegetation, and can provide fertilizer and soil consolidation for the surrounding vegetation after regular cleaning.

[0024] Furthermore, the second rainwater treatment equipment is an oil pollution treatment equipment, which is different from the first filter in that an oil floating plate (5-6) is provided inside the cavity, and wastewater enters from the water inlet (5-1) at the upper end of the treatment equipment, and fully immerses the filter material (5-4) in the filter basket (5-5) from top to bottom. The filter material (5-4) uses fiber balls, modified fiber balls and other oil removal devices. The filter material can adsorb and filter suspended matter, organic chemicals, colloids and other substances in the car wash wastewater, and can be replaced regularly. A filter basket (5-2) is provided at the bottom to intercept stains, and finally ideal rainwater is output from the outlet pipe (5-3).

[0025] The steps of system installation are as follows: Weld the plug (1-3) with the parking shed photovoltaic panel (1-1) to form a complete rainwater collector, and seal the filter screen at the water inlet of the collector, wherein the photovoltaic panel provides electricity for the whole process. Connect the underground pipe with the parking shed pipe. The aperture of the underground pipe is larger than the aperture of the parking shed pipe, and set a 1.5% slope for the diversion cross pipe to form a certain potential energy, so that the water flow is conveniently introduced into the initial rainwater pool. After the initial rainwater pool (1-5) is filled with water, it flows into the first filter (1-6). The filter is buried underground, and a pit is dug in advance to bury the upper end cover, which is convenient for subsequent inspection and replacement of the filter material and filter screen. The filter is connected to the water reservoir by a water pipe. The water reservoir is 2m high and 3m deep, with 1m of soil covering it. The upper car washing machine is connected to the water reservoir by a water pipe. When washing the car, the water pump is powered on to pump water and the power is turned off at a fixed time. A rainwater grate (2-3) is installed on the slope of the car wash station (2-2) to treat wastewater after car washing and rainwater from normal rainfall. The lower end of the rainwater grate is a degreasing filter material (2-4) and a sedimentation tank (2-5), which can be cleaned regularly. The water flows along the drainage pipe into the second filter (3-1) to filter the wastewater after car washing in a targeted manner. The upper end of the clean water tank (3-2) is connected to a second pump (3-3) to supply water to the shower (3-4) to regularly irrigate the surrounding green plants.

[0026] The beneficial effects of the present invention are as follows: the present invention utilizes rainwater to the greatest extent by modifying the parking lot, adding filters, QR code car washing machines, rainwater grates, irrigation nozzles and other equipment. It can effectively alleviate the problem of water shortage in arid areas, reduce the pressure on the municipal drainage system, reduce the pollution caused by the drainage of parking sheds, alleviate the problem of waterlogging caused by heavy rains, and irrigate the surrounding green plants, etc., achieving multiple benefits at one stroke. The system aims to maximize the use of rainwater resources, while reducing the pressure on the municipal drainage system, reducing the pollution caused by the drainage of parking sheds, increasing government fiscal revenue, irrigating the surrounding green plants and other multiple benefits. Its main feature is that the system can collect rainwater resources, filter and store them, and then provide car washing services to customers when they need to wash their cars. The wastewater after car washing is filtered and stored for the second time, and the surrounding green plants are regularly irrigated. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a three-dimensional and interface schematic diagram of the solar panel roof rainwater collection and processing unit according to the first embodiment of the present invention.

[0028] Figure 2 Schematic diagram of the three-dimensional and interface of the self-service car wash unit for scanning QR code according to the first embodiment of the present invention

[0029] Figure 3 It is a schematic diagram of the three-dimensional and interface of the car wash wastewater treatment and reuse unit described in the second embodiment of the present invention.

[0030] Figure 4 Schematic diagram of the three-dimensional and interface of the first filter in the solar panel roof rainwater collection and processing unit according to the first embodiment of the present invention

[0031] Figure 5 It is a schematic diagram of the three-dimensional and interface of the second filter in the car wash wastewater treatment and reuse unit described in the second embodiment of the present invention.

[0032] Figure 6 This is a cross-sectional schematic diagram of a car wash station in a code scanning self-service car wash unit according to the first embodiment of the present invention.

[0033] Figure 7 This is a schematic diagram of the three-dimensional and interface of the integrated parking shed rainwater efficient utilization system of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with examples, but the present invention is not limited to the following examples.

[0035] Embodiment 1:

[0036] This embodiment of the parking shed roof rainwater resource efficient utilization system and method. Figure 1 This embodiment includes: a rainwater collection device, a rainwater treatment device and a rainwater utilization device. The rainwater collection device is as shown in Figure 1 As shown, (1-1) is a photovoltaic panel structure, which plays the role of receiving rainwater. The photovoltaic panel can convert solar energy into electrical energy to provide electrical energy for the entire system. The initial rainwater is collected in the funnel, passes through the filter (1-2), and the large filter residue is left outside, and the rest of the rainwater flows down the pipe.

[0037] The rainwater treatment device (1-5) is an initial rainwater pool. We usually think that the water quality of the first 3mm of rainwater is relatively dirty. The initial rainwater pool is used to collect dirty water. When the pool is full, the water entering the filter is clean water. The water flows through the water inlet (4-1) into the distributed rainwater filter shown in (1-6). The water flows into the interior along the tangent direction of the inner wall of the processor, forming a vortex and radial flow on the inner cavity. In this way, the deposited particles and silt fall into the bottom net, and the larger impurities are intercepted by the sewage interception basket (4-2). The sewage interception basket can be taken out regularly. The rainwater separated by the cyclone continues to flow upward. The rainwater passes through the various filter materials (4-3) in the filter basket (4-4). The filter materials further filter out fine particles, and at the same time can adsorb and filter suspended matter, macromolecular organic matter, colloids and other substances in the water, output more ideal rainwater, and complete the processing function of the processor. It is discharged through the upper end outlet (4-5), and the relatively clean water flows into the water storage tank (1-7). The water storage shown in (1-7) is a rectangular structure with a length of 30m, a height of 1m and a width of 2m. It can accommodate 60m 3 Water body.

[0038] The rainwater utilization device is as follows Figure 2 As shown, (2-1) is a scan code self-service car washing machine. The car washing machine is equipped with a pump with a rated power of 1500w and a peak power of 9800w. The 25m long suction pipe is connected to the car washing gun through the first pump, and the suction pipe is connected to the water reservoir. The customer scans the QR code on the machine body to select the car washing time gear. When the order starts, the power is turned on, and the clean water is adsorbed from the water reservoir through the suction pipe and supplied to the car washing gun for washing the car. When the order ends, the power is automatically turned off, which not only ensures the power safety of the equipment but also effectively saves electricity. The waste water after car washing and the rainwater from rainfall can flow through the rainwater grate (2-3) through the degreasing device (2-4) and the sedimentation tank (2-5) and then flow to the second filter (3-1). The sand settling tank (2-5) is a toothed structure. Large particles of impurities stay at the bottom of the sand settling tank. The waste residue in the sand settling tank can be cleaned regularly. The rich substances can be used as fertilizer for the surrounding green plants, and the rest of the waste water flows into the pipeline.

[0039] Figure 6 This is the cross-sectional structure of a car wash station. (6-1) is a rainwater grate, through which wastewater and rainwater can be retained and flow to the degreasing filter material shown in (6-2). (6-3) is a sedimentation tank to precipitate the filter residue.

[0040] Embodiment 2:

[0041] This embodiment combines the first set of upgraded car wash wastewater treatment and reuse system and method. It includes a rainwater collection device, a rainwater treatment device and a rainwater utilization device, such as Figure 3 shown.

[0042] The car wash wastewater treatment and reuse unit is as follows Figure 3As shown, car wash wastewater or rainwater flows into the second filter (3-1) from a water pipe with an inclination angle of 2%. The car wash wastewater or rainwater fully submerges the filter material (5-4) in the filter basket (5-5) that absorbs organic chemicals and oil, and the filter residue is left in the interception fence (5-2). The clean water after two filtrations flows out from the outlet (5-3). The clean water after filtration enters the clean water pool (3-2). The clean water pool (3-2) is a rectangular structure with a length of 15m, a width of 1m, and a height of 2m, which can accommodate 30m 3 The figure (3-3) is a lifting pump, which can absorb the clean water in the clean water pool (3-2) through the pipeline to provide water spraying power for the shower (3-4) to irrigate the surrounding green plants.

Claims

1. A parking shed rainwater efficient utilization system, characterized in that: The invention comprises a solar panel roof rainwater collection and treatment unit, a QR code scanning self-service car washing unit and a car washing wastewater treatment and reuse unit; the solar panel roof rainwater collection and treatment unit comprises: a parking shed photovoltaic panel roof (1-1) with an overall V-shaped cross section, a plane filter (1-2) is provided in the middle and lower part of the V-shaped, plugs (1-3) are provided at both ends of the V-shaped parking shed photovoltaic panel roof (1-1), downward water collection vertical pipes (1-4) are provided at the bottom of both ends of the V-shaped parking shed photovoltaic panel roof (1-1), the water collection vertical pipes are connected to the initial rainwater pool (1-5) through a guide pipe, and the initial rainwater pool is connected to the first rainwater filter (1-6) and the water storage tank (1-7) in sequence through pipelines; The code scanning self-service car washing unit comprises a QR code car washing machine (2-1) equipped with a first water pump and a car washing gun, a car washing platform (2-2), an oil filter device (2-4), and a sedimentation tank (2-5); the water inlet pipe of the first water pump of the QR code car washing machine is connected to the water storage tank (1-7), the water outlet pipe of the first water pump is connected to the car washing gun, and the first water pump and the car washing gun are equipped with a QR code scanning payment device; the car washing platform (2-2) is a prism-shaped high platform, the upper end of which accommodates a parking space, and the side of the prism is a sloped rainwater grate (2-3), rainwater and wastewater from car washing with a car washing gun can be collected, below the rainwater grate (2-3) is a replaceable oil filter device (2-4) containing three layers of filter material, and below the oil filter device (2-4) is a sedimentation tank (2-5); The car wash wastewater treatment and reuse unit comprises a second filter (3-1), a clean water tank (3-2), a second pump (3-3), and an irrigation and spraying device (3-4). The sedimentation tank (2-5) is connected to the clean water tank (3-2) via the second filter (3-1), and the clean water tank (3-2) is connected to the irrigation and spraying device (3-4) via a pipeline via the second pump (3-3).

2. A parking shed rainwater efficient utilization system according to claim 1, characterized in that: A V-shaped photovoltaic panel roof with blocked ends is used to collect rainwater. A filter is located at the bottom of the photovoltaic panel roof. A row of water collection vertical pipes is connected below the V-shaped photovoltaic panel roof. A guide pipe with an inclination angle of 1.5% is connected below the water collection vertical pipe. The guide pipe directly leads to the upper end of one side of an initial rainwater pool (1-5). The upper end of the other side of the initial rainwater pool (1-5) is connected to the upper end of a first rainwater filter (1-6) through a conduit. Clean water flows through the upper end of the other side of the first rainwater filter (1-6) through the conduit and into a water storage tank (1-7). Rainwater collected by the V-shaped photovoltaic panel roof (1-1) enters the initial rainwater pool (1-5) by gravity.

3. A parking shed rainwater efficient utilization system according to claim 1, characterized in that: The initial rainwater pool (1-5) is composed of a rectangular water storage tank with a length of 3 meters, a height of 1 meter and a width of 1 meter. The 3mm rainwater that falls in the early stage is unclean water. The water flows in from the inlet at the upper end of the side wall through the water inlet pipe. When the dirty water is full, it overflows from the outlet at the upper end of the other side and flows into the decentralized rainwater filter.

4. A parking shed rainwater efficient utilization system according to claim 1, characterized in that: The structure of the first rainwater filter: the overall structure is a vertical structure, a downward interception basket (4-2) is provided at the bottom of the vertical cavity, an integral independent and replaceable filter basket (4-4) is provided in the middle and lower part of the vertical cavity, and the filter basket (4-4) is filled with filter material (4-3); the water outlet (4-5) is located on the upper side of the cavity, and the water inlet pipe (4-1) inlets water from the side below the filter basket (4-4), and the side water inlet, i.e., the water inlet end pipe (4-1) adopts the side cut-in connection mode, and the physical position of the water inlet end of the water inlet pipe (4-1) is flush with the water outlet; The structure of the second filter: the overall structure is a vertical cavity structure, the water inlet (5-1) is located on the upper side of the cavity, an oil floating plate (5-6) is set at the upper end of the cavity to isolate oil pollution, and the oil floating plate (5-6) is lower than the water inlet (5-1); a downward interception basket (5-2) is set at the lower end of the bottom of the vertical cavity. When entering the second filter, the large filter residue has been precipitated in the sedimentation tank, and only relatively small suspended particles are left. An integral, independent and replaceable filter basket (5-5) is set in the middle and lower part of the vertical cavity, and the filter basket (5-5) is filled with filter material (5-4); the outlet pipe (5-1) discharges water from the side below the filter basket (5-5).

5. A parking shed rainwater efficient utilization system according to claim 4, characterized in that: The first rainwater filter (1-6) and the second filter (3-1) have different filter materials and different inlet and outlet ends; the first rainwater filter (1-6) uses quartz sand, anthracite, ceramsite, and activated carbon as filter materials; it can quickly and efficiently process impurities in rainwater; the second filter (3-1) uses fiber balls, modified fiber balls, and other materials; the fiber balls have good elasticity, do not float to the water surface, have a fast filtration rate, and can effectively remove suspended matter, oil, organic matter, colloidal particles, microorganisms, etc. in the water; the first filter The water outlet (4-5) of the filter is located on the upper side of the cavity, and the water inlet pipe (4-1) takes in water from the side below the filter basket (4-4), thereby settling the filter residue to the greatest extent. The water inlet (5-1) of the second filter is located on the upper side of the cavity, and an oil floating plate (5-6) is arranged inside the cavity to isolate oil pollution. The water outlet pipe (5-3) discharges water from the side below the filter basket (5-5). When the car wash wastewater and rainwater enter the second filter, the large filter residue has been settled in the sedimentation tank, and only small suspended particles enter.

6. A parking shed rainwater efficient utilization system according to claim 1, characterized in that: The oil filter device (2-4) comprises at least three layers, which include from top to bottom: the first layer: a coarse filter layer, which uses synthetic fiber materials such as polypropylene and polyester to capture relatively large particles of impurities; the second layer: an oil-water separation layer, which uses hydrophobic materials and is specifically used to absorb oil; the third layer: a fine filter layer, which uses activated carbon or non-woven fabrics to further remove residual oil and fine particles.

7. The operation mode of the parking shed rainwater efficient utilization system according to any one of claims 1 to 6 is characterized in that: In the solar panel roof rainwater collection and processing unit, the rainwater collected by the photovoltaic panel roof of the V-shaped parking shed equipped with edge plugging (1-3) is filtered through the filter screen (1-2) below to remove large particles of impurities, and the collected rainwater is collected into the diversion pipe through the water collection vertical pipe (1-4), and then collected into the initial rainwater pool (1-5) by the diversion pipe. When the water in the initial rainwater pool is full, it is considered that the dirty water has been collected and the remaining rainwater is relatively clean rainwater; the rainwater enters the first filter (1-6) through the water outlet conduit, and the rainwater is filtered and processed. The stains are left in the filter, and the clean water is collected into the reservoir (1-7); when the customer needs to wash the car, the first pump in the self-service car wash unit that scans the code draws water from the reservoir, and supplies it to the car wash gun through the first pump, and the customer can set the gear to adjust the car wash time; the waste water and the flat The rainwater from rainfall is collected by the sloped rainwater grate (2-3) in the car wash wastewater treatment and reuse unit, and the rainwater completely immerses the three-layer degreasing filter material (2-4) filled below: the first layer: coarse filter layer: using synthetic fiber materials such as polypropylene and polyester to capture larger particle impurities, the second layer: oil-water separation layer: using hydrophobic materials such as polyethylene and hydrophobic foam, which are specially used to absorb oil, the third layer: fine filter layer: using activated carbon or non-woven fabric to further remove residual oil and fine particles, and the sedimentation tank precipitates the particles, and then the wastewater and rainwater enter the second filter (3-1), and the wastewater is subjected to a targeted second degreasing filtration treatment. The two degreasing treatments ensure the cleanliness of the irrigation water source, and the clean water flows into the clear water tank, and the surrounding green plants are regularly watered by the sprinkler equipment (3-4).

8. The method according to claim 7, characterized in that The water reservoir (1-7) is disinfected regularly by adding disinfection tablets into the water reservoir to achieve the purpose of disinfection.

9. The method according to claim 7, characterized in that The car washing machine (2-1) is equipped with a high-power water pump and a car washing gun. The customer controls the length of the car washing time by scanning a code to adjust the gear. When an order is placed, the car washing machine is powered on and automatically powered off when the order is completed.

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