Sponge City Stormwater Management System

Abstract

The utility model proposes a sponge city rainwater management system, including a water tank and a wetland flower bed dry island installed in the middle of the water tank. The pool wall of the water tank is cast with permeable concrete. The internal space of the water tank is used to hold rainwater. The wetland flower bed dry island includes a flower bed and a finished water storage module. A corrugated seepage pipe runs through the flower bed and the finished water storage module. The finished water storage module is filled with ecological porous fiber cotton. The top of the flower bed is used to place planting soil for planting wetland plants. The sponge city rainwater management system achieves effective management, purification and utilization of rainwater by imitating the functions of natural wetlands, while providing rich ecological and environmental services. The device improves the urban hydrological cycle, reduces urban waterlogging, and increases groundwater recharge by collecting and storing rainwater, removing pollutants, regulating rainwater flow and peak, providing biological habitats, increasing biodiversity, and promoting carbon fixation and oxygen release.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rainwater treatment systems, in particular to a sponge city rainwater management system. Background Art

[0002] Currently, urban green spaces are facing serious fragmentation problems, which further exacerbates the challenge of uneven urban rainfall. Frequent extreme rainfall events, uneven rainfall distribution, and the damage of urbanization to the natural hydrological cycle are urgently calling for innovative solutions.

[0003] In modern garden cities that pursue sustainability and ecological environment, traditional sponge city technology is no longer sufficient to cope with the unique challenges faced by scattered green spaces. Therefore, the development of a new type of rainwater collection, purification and storage device is of vital importance to solve the problem of uneven rainfall in these fragmented urban green space areas. Utility Model Content

[0004] The main purpose of the utility model is to provide a sponge city rainwater management system, aiming at effectively collecting and utilizing rainwater.

[0005] To achieve the above-mentioned purpose, the utility model provides a sponge city rainwater management system, including a water tank and a wetland flower bed dry island installed in the middle of the water tank, wherein the pool wall of the water tank is cast with permeable concrete, the internal space of the water tank is used to hold rainwater, the wetland flower bed dry island includes a flower bed and a finished water storage module located below the flower bed, a corrugated seepage pipe runs through the flower bed and the finished water storage module, the interior of the finished water storage module is filled with ecological porous fiber cotton, and planting soil is placed above the flower bed to plant wetland plants.

[0006] Preferably, a first slot and a second slot are provided on the side of the water tank, a stainless steel waste flow trough made of stainless steel is installed on the first slot, a plurality of through holes are provided on the side wall of the stainless steel waste flow trough, and pebbles are contained inside the second slot to filter rainwater.

[0007] Preferably, the bottom wall of the first slot is located above the bottom wall of the second slot.

[0008] Preferably, the water tank comprises an upper layer made of permeable concrete, a lower layer made of crushed stone, and a geotextile layer located below the lower layer, and corrugated seepage pipes are provided on the upper layer, the lower layer and the geotextile layer.

[0009] Preferably, a filter gabion is provided at the bottom of the water tank, one end of the corrugated seepage pipe is inserted into the filter gabion, and one end of the corrugated seepage pipe passes through the bottom wall of the water tank and is inserted into the soil.

[0010] Preferably, an overflow port is provided on the side wall of the water tank, and an overflow port drain pipe is inserted into the overflow port.

[0011] Preferably, a module-assembled planting floating island is provided on the water surface of the water tank, and the module-assembled planting floating island is connected to the finished water storage module by a rope.

[0012] Preferably, the module-assembled planting floating island is also connected to the filtering gabion and the side wall of the water tank by ropes respectively.

[0013] Preferably, the finished water storage module comprises an outer shell and ecological porous fiber cotton filled in the inner part of the outer shell, and a corrugated water seepage pipe is inserted into the side wall of the outer shell.

[0014] Preferably, the upper layer is the bottom wall of the outer shell, and a plurality of corrugated water seepage pipes are arranged on the bottom wall of the outer shell.

[0015] The sponge city rainwater management system proposed in the utility model realizes the effective management, purification and utilization of rainwater by imitating the functions of natural wetlands, and at the same time provides rich ecological and environmental services. The device improves the urban hydrological cycle, reduces urban waterlogging, increases groundwater recharge, maintains the balance of water resources, reduces urban hard pavement, increases green space, improves the urban heat island effect, and improves the quality of life of urban residents by collecting and storing rainwater, removing pollutants, regulating rainwater flow and peak, providing biological habitats, increasing biodiversity, and promoting carbon fixation and oxygen release. In addition, the entire system adopts a technology combining permeable concrete and corrugated seepage pipes to ensure the continuous penetration and flow of water inside the device and the outside world, thereby improving the utilization efficiency of water resources and the overall performance of the system. Through this design, the system not only effectively manages rainwater resources, but also enhances the ecological function and aesthetics of the urban environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of the sponge city rainwater management system of the utility model.

[0017] In the figure, 1-water tank, 11-upper layer, 12-lower layer, 13-anti-filtration geotextile layer, 14-first slot, 15-second slot, 2-wetland flower bed dry island, 21-flower bed, 22-finished water storage module, 221-shell, 222-ecological porous fiber cotton, 23-wetland plants, 24-planting soil, 3-corrugated seepage pipe, 4-filtration gabion, 5-overflow drainage pipe, 6-module assembly planting floating island.

[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] Reference Figure 1 In this preferred embodiment, a sponge city rainwater management system includes a water tank 1 and a wetland flower bed island 2 installed in the middle of the water tank 1, wherein the pool wall of the water tank 1 is cast with permeable concrete, the internal space of the water tank 1 is used to hold rainwater, and the wetland flower bed island 2 includes a flower bed 21 and a finished water storage module 22 located below the flower bed 21, a corrugated seepage pipe 3 runs through the flower bed 21 and the finished water storage module 22, and the finished water storage module 22 is filled with ecological porous fiber cotton 222, and the top of the flower bed 21 is used to place planting soil 24 to plant wetland plants 23. It should be noted that the maintenance and management of wetland plants 23 needs to be different from conventional methods to ensure the best effect.

[0022] Furthermore, a first slot 14 and a second slot 15 are provided on the side of the water tank 1, a stainless steel waste flow trough made of stainless steel is installed on the first slot 14, a plurality of through holes are provided on the side wall of the stainless steel waste flow trough, and pebbles are contained inside the second slot 15 to filter rainwater. The bottom wall of the first slot 14 is located above the bottom wall of the second slot 15.

[0023] In this embodiment, the water trough 1 includes an upper layer 11 made of permeable concrete, a lower layer 12 made of crushed stone, and a geotextile layer 13 located below the lower layer 12. Corrugated seepage pipes 3 are provided on the upper layer 11, the lower layer 12 and the geotextile layer 13.

[0024] A filtering gabion 4 is provided at the bottom of the water tank 1, one end of the corrugated water seepage pipe 3 is inserted into the interior of the filtering gabion 4, and one end of the corrugated water seepage pipe 3 passes through the bottom wall of the water tank 1 and is inserted into the soil.

[0025] Furthermore, an overflow port is provided on the side wall of the water tank 1, and an overflow port drain pipe 5 is inserted into the overflow port.

[0026] Furthermore, a modular planted floating island 6 is provided on the water surface of the water tank 1, and the modular planted floating island 6 is connected to the finished water storage module 22 by ropes. The modular planted floating island 6 is also connected to the filter gabion 4 and the side wall of the water tank 1 by ropes.

[0027] In this embodiment, the finished water storage module 22 includes a shell 221 and an ecological porous fiber cotton 222 filled in the shell 221, and a corrugated water seepage pipe 3 is inserted into the side wall of the shell 221. The upper layer 11 is the bottom wall of the shell 221 (that is, the shell 221 includes a side wall and a top wall, and its bottom shares the same bottom wall with the water tank 1), and a plurality of corrugated water seepage pipes 3 are inserted into the bottom wall of the shell 221. Specifically, the shell 221 and the flower bed 21 are both made of PP.

[0028] The working process of the sponge city rainwater management system is as follows: in the rainy season, rainwater first enters the stainless steel waste trough through surface runoff, then flows into the filter trough made of pebbles (that is, the second slot 15), and finally enters the space below the water tank 1 for storage. In addition, rainwater can also directly enter the finished water storage module 22 for storage. When the rainfall is too large and the water level is too high, the system discharges excess water through the preset overflow port. In the dry season, the finished water storage module 22 releases the stored water resources, and the wetland floating island (fixed on the rope) planted by module assembly reduces water surface evaporation, thereby maintaining the water balance of soil and vegetation. This design ensures that the soil and vegetation can obtain a stable water supply whether in the rainy season or the dry season.

[0029] In the investigation phase before the application of this technology, it is necessary to evaluate the current status of the construction to be built, mainly including:

[0030] 1. Orientation: Assess the orientation of the park or green area to determine the intensity and direction of sunlight exposure to ensure plant selection and growth environment.

[0031] 2. Surface runoff: Analyze the surface runoff pattern of the site and determine the direction and speed of rainwater to design appropriate water flow paths and collection systems.

[0032] 3. Water storage capacity: Determine the water storage capacity required for the device based on local climatic conditions and hydrological data to cope with different rainfall intensities and durations.

[0033] 4. Safety protection: Consider the safety of the device and the safety of the user, including setting up appropriate protective measures such as guardrails, warning signs, etc.

[0034] This sponge city rainwater management system is a comprehensive sponge city engineering facility, which is particularly suitable for low-lying narrow landscape spaces, seasonal canals, pocket parks, linear parks and other areas in the city.

[0035] The sponge city rainwater management system proposed in this embodiment achieves effective management, purification and utilization of rainwater by imitating the functions of natural wetlands, while providing rich ecological and environmental services. The device improves the urban hydrological cycle, reduces urban waterlogging, increases groundwater recharge, maintains the balance of water resources, reduces urban hard pavement, increases green space, improves the urban heat island effect, and improves the quality of life of urban residents by collecting and storing rainwater, removing pollutants, regulating rainwater flow and peak, providing biological habitats, increasing biodiversity, and promoting carbon fixation and oxygen release. In addition, the entire system adopts a combination of permeable concrete and corrugated seepage pipe technology to ensure the continuous penetration and flow of water inside the device and the outside world, thereby improving the utilization efficiency of water resources and the overall performance of the system. Through this design, the system not only effectively manages rainwater resources, but also enhances the ecological function and aesthetics of the urban environment.

[0036] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sponge city rainwater management system, characterized in that: It includes a water tank and a wetland flower bed dry island installed in the middle of the water tank, wherein the pool wall of the water tank is cast with permeable concrete, the internal space of the water tank is used to hold rainwater, the wetland flower bed dry island includes a flower bed and a finished water storage module located below the flower bed, a corrugated seepage pipe runs through the flower bed and the finished water storage module, the interior of the finished water storage module is filled with ecological porous fiber cotton, and planting soil is placed above the flower bed to plant wetland plants.

2. The sponge city rainwater management system according to claim 1, characterized in that: The side of the water tank is provided with a first slot and a second slot, a stainless steel waste flow trough made of stainless steel is installed on the first slot, a plurality of through holes are opened on the side wall of the stainless steel waste flow trough, and pebbles are contained inside the second slot to filter rainwater.

3. The sponge city rainwater management system according to claim 2, characterized in that: The bottom wall of the first slot is located above the bottom wall of the second slot.

4. The sponge city rainwater management system according to claim 1, characterized in that: The water tank comprises an upper layer made of permeable concrete, a lower layer made of crushed stones and a geotextile layer located below the lower layer. Corrugated seepage pipes are arranged on the upper layer, the lower layer and the geotextile layer.

5. The sponge city rainwater management system according to claim 4, characterized in that: A filtering gabion is arranged at the bottom of the water tank, one end of the corrugated water seepage pipe is inserted into the interior of the filtering gabion, and one end of the corrugated water seepage pipe passes through the bottom wall of the water tank and is inserted into the soil.

6. The sponge city rainwater management system according to claim 1, characterized in that: An overflow port is provided on the side wall of the water tank, and an overflow port drain pipe is inserted into the overflow port.

7. The sponge city rainwater management system according to claim 1, characterized in that: A module-assembled planting floating island is provided on the water surface of the water tank, and the module-assembled planting floating island is connected to the finished water storage module through a rope.

8. The sponge city rainwater management system according to claim 7, characterized in that: The module-assembled planting floating island is also connected to the filtering gabion and the side wall of the water tank respectively through ropes.

9. The sponge city rainwater management system according to claim 4, characterized in that: The finished water storage module comprises an outer shell and ecological porous fiber cotton filled in the inner part of the outer shell, and a corrugated water seepage pipe is inserted into the side wall of the outer shell.

10. The sponge city rainwater management system according to claim 9, characterized in that: The upper layer is the bottom wall of the outer shell, and a plurality of corrugated water seepage pipes are arranged on the bottom wall of the outer shell.

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