CN209891286U - Rainwater collection, purification, regulation and storage ecological utilization system for sponge urban viaduct - Google Patents
Rainwater collection, purification, regulation and storage ecological utilization system for sponge urban viaduct Download PDFInfo
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- CN209891286U CN209891286U CN201822039829.9U CN201822039829U CN209891286U CN 209891286 U CN209891286 U CN 209891286U CN 201822039829 U CN201822039829 U CN 201822039829U CN 209891286 U CN209891286 U CN 209891286U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Abstract
The utility model provides a sponge city viaduct rainwater is collected and is purified regulation ecological utilization system, belongs to sponge city construction field, include the collection conveying unit who collects the viaduct rainwater, with collect the conveying unit intercommunication, filter the rainwater after collecting, deposit and degrade the ecological purification unit who purifies, with ecological purification unit intercommunication, carry out the storage regulation unit of storing to the rainwater after purifying to and with store the controlling means who adjusts the rainwater of storage unit control connection and utilize. The utility model discloses close on the load of the municipal rainwater pipe network of overpass when both alleviateing when raining, watering cost when also can reducing urban overhead greenbelt routine maintenance. Meanwhile, the rainwater runoff and pollution on the elevated pavement can be effectively controlled and fully utilized from the source, the environment-friendly and resource-saving urban viaduct is built, and the current requirement of sponge urban construction is met.
Description
Technical Field
The utility model relates to a collection of rainwater purifies regulation and utilizes system, especially a sponge city overpass rainwater is collected and is purified regulation ecological utilization system belongs to sponge city construction technical field.
Background
In urban road planning and construction, in order to relieve increasingly congested traffic conditions, more and more viaducts are formed, a larger elevated pavement area is generated, a larger water collecting surface is formed, a large amount of rainwater runoff is collected on the elevated pavement during rainfall, if a traditional rainwater fast drainage mode is adopted, a large amount of water resources are wasted, the burden of a urban drainage system is increased, and a large amount of irrigation water is needed for maintaining green belts under the elevated bridges. In addition, frequent traffic on the viaduct causes a large amount of pollutants to be deposited on the viaduct pavement, and in the rainfall process, a large amount of pollutants such as particulate matters, organic matters, nitrogen and phosphorus, heavy metals, grease and the like deposited on the pavement are mixed into rainwater runoff, so that the runoff pollution of the viaduct pavement is very serious, and if the pollutants are directly discharged into nearby water bodies, the water bodies are seriously polluted.
Currently, the sponge city construction concept is integrated into the construction, design and development of the urban overhead drainage and landscape system, and a period of time is needed. At present, the lower greening belt of the overhead has only a single landscape function, the functions of detention, purification and regulation and storage of the lower greening belt of the overhead are not fully utilized, and tap water is additionally irrigated in no rain or drought seasons for simple landscaping and greening, so that the operation and maintenance cost of municipal facilities is greatly increased.
Therefore, a technology is needed to fully utilize the greening ground under the current urban elevated, and the rainwater is purified and simultaneously stored and utilized, so that the load of a municipal rainwater pipe network close to the elevated bridge during raining is reduced, and the irrigation cost during daily maintenance of the urban elevated greening belt can also be reduced. Meanwhile, the rainwater runoff and pollution on the elevated pavement can be effectively controlled and fully utilized from the source, and the environment-friendly and resource-saving urban viaduct is built.
Relevant patents are found by searching domestic patent documents. For example, the invention patent application with the application number of CN201810662529.8, entitled three-dimensional greening method and device under viaducts discloses a three-dimensional greening method and device under viaducts, which screens plants suitable for growing under viaducts, applies super absorbent materials in culture media, adopts a modular planting mode to irrigate planting modules under viaducts in an infiltration mode, realizes rainwater recycling, breaks through the limits of traditional bridge shade green land plane greening, vine vertical greening modes and plant types, greens three-dimensional gray space of viaducts, enables greening plant types under viaducts to be diverse, improves greening landscape quality under viaducts, enables facade greening and viaducts to be integrated, improves the cutting condition of urban viaducts and surrounding environment, enables the landscape environment under and around viaducts to reach the conditions of green, green and green under viaducts, and the like, The ecological corridor can be used as an active public space, and can convert an overhead line from a pollution line into an ecological line and a life line, and provide a reproducible mode for the utilization of the space under the overhead line of the city.
Also as application number CN201711315778.1, the invention patent application entitled "low maintenance durable landscape water scenery and rainwater self-purification system under viaduct" discloses a low maintenance durable landscape water scenery and rainwater self-purification system under viaduct, comprising: the viaduct rainwater collection module is arranged below the viaduct, the rainwater buffering module is arranged below the viaduct surface, the undercurrent wetland is laid below the rainwater buffering module, the ecological water tank is arranged in the center of the undercurrent wetland, and the underground water storage tank is arranged on one side of the ecological water tank. The low-maintenance lasting landscape waterscape and rainwater self-purification system under the viaduct is ingenious in design, realizes the collection, purification, storage and cyclic utilization of rainwater through the cooperation of the viaduct rainwater collection module, the rainwater buffer module, the subsurface wetland, the ecological water tank and the underground reservoir, and solves the problems of road surface water accumulation and poor landscape effect and rainwater resource waste caused by difficulty in landscape maintenance due to the fact that the viaduct rainwater is directly discharged to a municipal pipeline and the generated pressure is too large.
Although the above-mentioned document is an ecological treatment method for collecting and utilizing rainwater on viaducts, it adopts a modular greening method, which is not favorable for the circulation of water and nutrient substances, and it only adopts a filter for rainwater purification treatment, and does not adopt an ecological treatment method for purification, so that the cost is too high. The scheme of the second document needs a large ground range and cannot be flexibly applied to different occasions. Therefore, improvements are still needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses collect the problem that exists in the utilization to current overpass rainwater, provide a sponge city overpass rainwater and collected and purify regulation ecological utilization system, collect the back with the rainwater of overpass bridge floor, make full use of afforestation ground under the overpass purifies to store the utilization to the rainwater of collecting.
The utility model discloses a solve the technical means that above-mentioned problem adopted and do: the utility model provides a sponge city viaduct rainwater is collected and is purified regulation ecological utilization system, includes the collection conveying unit who collects the viaduct rainwater, with collect conveying unit intercommunication, filter the rainwater after collecting, deposit and degrade the ecological purification unit who purifies, with ecological purification unit intercommunication, carry out the storage regulation unit of storing to the rainwater after purifying to and with store the controlling means who adjusts the rainwater of storage unit control connection and utilize.
Further, the collecting and conveying unit comprises a pipeline with an opening end communicated to the inlet of the ecological purification treatment unit at the bridge floor and the tail end.
Further, the ecological purification treatment unit comprises a filtration and precipitation area connected with the tail end of the collection and conveying unit and a rainwater garden connected with a water outlet of the filtration and precipitation area.
Furthermore, the filtering and settling zone is a gravel pile with a water inlet higher than a water outlet, the height of the gravel pile in the gravel pile is 0.2-0.3m, and the particle size range of the gravel is 20-50 mm.
Furthermore, the rainwater garden is filled with filler for purifying rainwater, the top of the rainwater garden is concave, and the concave depth is 200-300 mm.
Further, the thickness of the filler is not less than 700 mm.
Furthermore, the filler is sequentially divided into a covering layer, a planting layer, a transition layer and a gravel layer from top to bottom.
Further, the covering layer is bark or decomposed fibrous material with particle size of 40-60mm and thickness of 50-100 mm.
Further, the planting layer component comprises coarse sand, surface soil, fallen leaf compost or decomposed wood chips, the particle size ranges are 0.5-2.5mm, 0.5-1.5mm and 4-10mm respectively, the mixing proportion (mass ratio) is 40-60%, 30-40% and 10-20% respectively, and the thickness is 400-600 mm.
Furthermore, the transition layer is medium sand, the grain diameter is 0.3-1.5mm, and the thickness is 50-100 mm.
Further, the gravel layer is formed by mixing gravel and wood chips or paper scraps in a volume ratio of 1:1, the particle size ranges of the gravel and the wood chips or the paper scraps are 5-20mm and 5-10mm respectively, and the thickness is 200-300 mm.
Furthermore, the water-permeable geotextiles are laid at the bottom and the side of the rainwater garden within the range of 300-400mm away from the bottom to wrap the filler in the rainwater garden.
Further, rain gardens are planted with shallow roots and short-time flooding resistant vegetation.
Furthermore, an overflow pipe communicated with a municipal rainwater pipe network is arranged in the rainwater garden.
Furthermore, the control device comprises a soil moisture probe for detecting the moisture content of the soil in real time, a moisture control driver connected with the soil moisture probe and receiving feedback information of the soil moisture probe, and a spraying system controlled by the moisture control driver to be opened and closed.
Furthermore, the control device also comprises a water level probe arranged on the storage and regulation unit, a water level control driver connected with the water level probe, and a water pump connected with the water using unit and controlled by the water level control driver.
The utility model has the advantages that:
the utility model discloses a set up the ecological clean system's of bridge floor rainwater mode under the overpass, make full use of original place carries on the purification treatment back to the contaminated rainwater of bridge floor and holds, recycles the rainwater that holds and waters the greenery plant under the bridge, closes on the load of the municipal rainwater pipe network of overpass when both alleviateing the rain, watering cost when also can reducing urban overhead greenbelt routine maintenance. Meanwhile, the rainwater runoff and pollution on the elevated pavement can be effectively controlled and fully utilized from the source, the environment-friendly and resource-saving urban viaduct is built, and the current requirement of sponge urban construction is met.
Drawings
Fig. 1 is a schematic flow chart of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example one
As shown in fig. 1, a rainwater collection, purification, regulation and storage ecological utilization system for a sponge city viaduct is characterized in that pipelines are arranged under the viaduct and used as collection and conveying units to collect rainwater on a bridge floor.
A gravel pile is arranged at the water outlet of the pipeline under the bridge or the tail end of the rainwater runoff to serve as a filtering and precipitating area, the water inlet of the pile is slightly lower than the ground at any time, or the water outlet of the pipeline extends into one part of the gravel pile, so that rainwater collected by the pipeline can smoothly flow into the gravel pile to prevent water accumulating on the ground nearby the gravel pile. The gravel pile is stacked with gravel, the height of the gravel is 0.2-0.3m, the particle size range of the gravel is 20-50mm, and the preferable stacking mode is that the particle size of the gravel on the water inlet side is larger, the particle size of the gravel on the water outlet side is smaller, the particle size of the gravel on the upper side is larger, and the particle size of the gravel on the lower side is smaller, so that larger pollutants in rainwater are intercepted and then filtered and precipitated. The water outlet of the gravel pile is lower than the water inlet of the gravel pile, so that the rainwater subjected to preliminary filtration and precipitation can flow out from the water outlet, and cannot flow back at the water inlet. The depth of the gravel pile may be greater than the height of the gravel. The water outlet of the gravel pile is positioned at the lowest part of the gravel.
The rainwater garden is arranged at the water outlet of the gravel pile, the top of the rainwater garden is concave 200 mm and 300mm, so that the rainwater garden is flush with the water outlet of the gravel pile or is lower than the water outlet of the gravel pile, and the rainwater after filtering and precipitating flows into the rainwater garden to be purified. For the determination of the area of the rainwater garden, the specification of developed countries requires that the ratio of the service area to the area of the rainwater garden is 20:1, and the ratio of the service area to the area of the rainwater garden is not lower than 5:1 according to the target of controlling 80% of rainfall all year round; according to the target of controlling 60% annual rainfall, the ratio of the service area to the area of the rainwater garden is not lower than 8:1, and the scale of the rainwater garden can be finally determined according to the annual rainfall and the service area in actual use.
The rainwater garden is filled with filler with the thickness of not less than 700mm, and the rainwater garden sequentially comprises a covering layer, a planting layer, a transition layer and a gravel layer from top to bottom. The filler is planted with shallow root and short-time flooding-resistant vegetation, such as iris, etc. The covering layer is bark or decomposed fibrous material, the particle size is 40-60mm, and the thickness is 50-100 mm; the planting soil layer filler comprises coarse sand, surface soil, fallen leaf compost or decomposed wood chips, the particle size ranges are 0.5-2.5mm, 0.5-1.5mm and 4-10mm respectively, the mixing proportions (mass ratio) are 40-60%, 30-40% and 10-20% respectively, and the thickness is 400-600 mm; the transition layer is medium sand with the grain diameter of 0.3-1.5mm and the thickness of 50-100 mm; the gravel layer is formed by mixing gravel and wood chips or paper scraps in a volume ratio of 1:1, the particle size ranges of the gravel and the wood chips or the paper scraps are 5-20mm and 5-10mm respectively, and the thickness is 200-300 mm. The permeable geotextiles are laid at the bottom and the side of the rainwater garden within the range of 300-400mm away from the bottom to wrap the filler in the rainwater garden, so that the bridge floor rainwater can flow out after the rainwater garden is purified, the filler structure of the rainwater garden cannot be changed, the purification treatment effect of the rainwater garden cannot be influenced, and the long-term treatment effect is ensured.
In the embodiment, the storage and regulation unit is arranged right below the rainwater garden, the scale of the storage and regulation unit is determined by controlling 80% of annual rainfall to be a target rainfall and corresponding to 90% of the target rainfall, the target rainfall is different from region to region, and if the target rainfall is about 28mm, the scale of the storage and regulation unit is determined by collecting 25mm of rainfall. The bottom and the periphery of the storage and regulation unit are both watertight structures, and the top can adopt a supporting structure with a local opening so as to ensure that the purified rainwater flows into the storage and regulation unit from the rainwater garden.
Store the regulation unit and still be connected with the controlling means who controls the utilization to the rainwater of storing, be equipped with the soil moisture probe and the spraying system of real-time detection soil moisture content in the soil of planting the vegetation under the overpass promptly, it is connected with soil moisture probe and spraying system to be equipped with the moisture control driver near storing the regulation unit, soil moisture probe real-time detection ecological purification unit soil moisture content and feedback to the moisture control driver, the moisture control driver confirms opening and closing of ecological purification unit spraying system according to soil moisture head detection result, realize the automatic watering of vegetation under the overpass, reduce the artifical intensity of labour of afforestation maintenance under the overpass.
Example two
In this embodiment, set up the overflow pipe in the rainwater garden, the overflow pipe is including violently managing and the standpipe, violently manage the setting at both ends from top to bottom, the standpipe is with the violently pipe intercommunication at both ends, the bottom at the gravel layer is established to the violently pipe of lower extreme, and it has the inlet opening that the geotechnological cloth wrapped up with permeating water to open on violently the pipe of lower extreme, the violently pipe top degree of the violently pipe of upper end surpasss rainwater garden top, the municipal rainwater pipe network that exit linkage closes on, the rainwater runoff that surpasss rainwater garden throughput or store and regulate and hold unit ability will.
EXAMPLE III
In this embodiment, the control device that utilizes control is carried out rainwater to storing regulation unit still includes and sets up level probe and water pump in storing regulation unit, and other water unit connections such as water pump and road watering still set up the water level control driver simultaneously and receive the water level information that level probe surveyed and open and close according to water level information control water pump to watering of vegetation under the priority overpass.
Example four
In this embodiment, the storage and regulation unit is not disposed under the rainwater garden, but may be disposed at other positions under the overpass, with the top being flush with or lower than the bottom of the rainwater garden, and when there is a certain distance between the rainwater garden and the storage and regulation unit, the storage and regulation unit may be connected via a pipe.
Can find out through above-mentioned embodiment the utility model discloses following beneficial effect has:
the utility model discloses a set up the ecological clean system's of bridge floor rainwater mode under the overpass, make full use of original place carries on the purification treatment back to the contaminated rainwater of bridge floor and holds, recycles the rainwater that holds and waters the greenery plant under the bridge, closes on the load of the municipal rainwater pipe network of overpass when both alleviateing the rain, watering cost when also can reducing urban overhead greenbelt routine maintenance. Meanwhile, the rainwater runoff and pollution on the elevated pavement can be effectively controlled and fully utilized from the source, the environment-friendly and resource-saving urban viaduct is built, and the current requirement of sponge urban construction is met.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. The utility model provides a sponge city overpass rainwater is collected and is purified regulation ecological utilization system which characterized in that: the device comprises a collecting and conveying unit for collecting the viaduct rainwater, an ecological purification treatment unit, a storage and regulation unit and a control device, wherein the ecological purification treatment unit is communicated with the collecting and conveying unit and is used for filtering, precipitating, degrading and purifying the collected rainwater;
the collecting and conveying unit comprises a pipeline with an opening end on the bridge floor and a tail end communicated to the inlet of the ecological purification treatment unit;
the ecological purification treatment unit comprises a filtration and precipitation area connected with the tail end of the collection and conveying unit and a rainwater garden connected with a water outlet of the filtration and precipitation area.
2. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 1, which is characterized in that: the filtering and settling zone is a gravel pile with a water inlet higher than a water outlet, the height of the gravel pile in the gravel pile is 0.2-0.3m, and the particle size range of the gravel is 20-50 mm.
3. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 1, which is characterized in that: the rainwater garden is filled with filler for purifying rainwater, the top of the rainwater garden is concave, and the concave depth is 200 mm and 300 mm;
the thickness of the filler is not less than 700 mm;
the filler is sequentially divided into a covering layer, a planting layer, a transition layer and a gravel layer from top to bottom.
4. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 3, characterized in that: the covering layer is bark or decomposed fibrous material with particle size of 40-60mm and thickness of 50-100 mm.
5. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 1, which is characterized in that: paving permeable geotextiles at the bottom and the side of the rainwater garden within the range of 300-400mm away from the bottom to wrap the filler in the rainwater garden;
the rain garden is planted with shallow roots and water-resistant vegetation for a short time.
6. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 1, which is characterized in that: the control device comprises a soil moisture probe for detecting the moisture content of the soil in real time, a moisture control driver which is connected with the soil moisture probe and receives feedback information of the soil moisture probe, and a spraying system which is controlled by the moisture control driver to be opened and closed.
7. The rainwater collection, purification, regulation and ecological utilization system for viaducts in sponge cities of claim 1, which is characterized in that: the control device also comprises a water level probe arranged on the storage and regulation unit, a water level control driver connected with the water level probe, and a water pump connected with the water using unit and controlled by the water level control driver.
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| CN201822039829.9U CN209891286U (en) | 2018-12-06 | 2018-12-06 | Rainwater collection, purification, regulation and storage ecological utilization system for sponge urban viaduct |
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| CN201822039829.9U CN209891286U (en) | 2018-12-06 | 2018-12-06 | Rainwater collection, purification, regulation and storage ecological utilization system for sponge urban viaduct |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356226A (en) * | 2018-12-06 | 2019-02-19 | 湖南大辰环保科技有限公司 | Sponge urban viaduct rainwater-collecting purifies ecological utilization method and the system of regulating and storing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356226A (en) * | 2018-12-06 | 2019-02-19 | 湖南大辰环保科技有限公司 | Sponge urban viaduct rainwater-collecting purifies ecological utilization method and the system of regulating and storing |
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Address after: 3 / F, building D-13, No. 1986, Taishan Road, Tianyuan District, Zhuzhou City, Hunan Province, 412007 Patentee after: Hunan Dachen environmental protection Co.,Ltd. Address before: 3 / F, building D-13, No. 1986, Taishan Road, Tianyuan District, Zhuzhou City, Hunan Province, 412007 Patentee before: HUNAN DACHEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |