CN215483400U - Biological retention facility rainwater regulation and reuse system - Google Patents
Biological retention facility rainwater regulation and reuse system Download PDFInfo
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- CN215483400U CN215483400U CN202121602336.7U CN202121602336U CN215483400U CN 215483400 U CN215483400 U CN 215483400U CN 202121602336 U CN202121602336 U CN 202121602336U CN 215483400 U CN215483400 U CN 215483400U
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Abstract
The utility model relates to the field of rainwater recycling, in particular to a rainwater storage and recycling system of a bioretention facility, which comprises a bioretention facility, wherein the bioretention facility comprises a gravel layer positioned at the bottom, and a planting soil layer is arranged on the gravel layer; the porous penetration pipe is arranged in the gravel layer; one end of the rainwater collecting pipe is connected with the porous permeation pipe through a three-way connector, and the other end of the rainwater collecting pipe penetrates out of the planting soil layer to be used as an overflow port; and the outdoor rainwater pipe is communicated with the rainwater collecting pipe and the porous permeation pipe through a three-way connector. After the scheme is adopted, the control on the rainfall peak value can be improved, and the stored rainwater can be used for groundwater replenishment and plant root system replenishment after rainfall.
Description
Technical Field
The utility model relates to the field of rainwater recycling, in particular to a rainwater regulation and recycling system for a bioretention facility.
Background
Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. In the sponge city construction process, the systematicness of natural rainfall, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the long-term property of the links are considered.
The sponge city is based on the theory and technology of comprehensive utilization of rainwater, aims to restore the urban ecological water circulation system by manual means, aims to solve the problems of abnormal drought and abnormal waterlogging caused by shortage of urban water resources, and can achieve the effects of beautifying the city and improving the living environment of citizens.
Sponge city construction should be planned low influence development rainwater system, urban rainwater pipe canal system and rainwater runoff discharge system that exceeds standard. The low-influence rainwater development system can realize the benign hydrologic cycle of the city by various technologies such as seepage, stagnation, storage, purification, utilization and drainage, improve the seepage, regulation, storage, purification, utilization and discharge capacity of the runoff rainwater and maintain or recover the sponge function of the city.
Along with sponge city process constantly promotes, the problem among the sponge city construction is prominent day by day, often only stops in infiltration, purification and three aspect of emission to the construction in sponge city among most project construction, and the leading cause lies in: firstly, the southern area is based on abundant water systems, the main construction core focuses on improving the annual runoff total control rate and the surface pollution reduction rate of rainwater on roads, roofs and the like, most of rainwater is quickly drained into nearby water systems through sponge facility permeation and purification, and the regulation, storage and recycling of the rainwater are ignored; secondly, along with the continuous promotion of the country to the construction of the sponge city, various facilities such as rainwater recycling, rainwater regulation and storage are derived in the market, so that the price and the practicability are greatly different, and good guidance is not provided for the construction of the sponge city; thirdly, various rainwater recycling and rainwater storage facilities increase the engineering construction investment, and after construction, the facility needs to be maintained and managed by continuously investing manpower and material resources, so that the management difficulty of a construction unit is increased.
The bioretention facility is a sponge element widely applied to sponge city construction, has the advantages of better implementation and being beneficial to improving the landscape effect, and rainwater purification devices of the bioretention facility are arranged on the two sides of a road, the green land of a community, the green land of a park, the periphery of a building and the like to absorb, purify, retain and store rainwater in hard places such as the road, a roof and the like. Hard place rainwater gets into biological detention facility through surface runoff, and the planting soil layer, the gravel layer through permeability, the purification performance improvement are absorbed and are cut dirty initial stage rainwater, collect the rainwater of infiltration by the rainwater collecting pipe of vertical setting and the porous permeation tube of vertical setting, and surplus rainwater passes through off-site rainwater pipe network and discharges into municipal pipe network. The ordinary way sets up overflow formula rainwater well in the biological detention facility and directly discharges surplus rainwater to municipal pipe network, and there are three drawbacks in this kind of mode: firstly, the retention time of rainwater is short, most of rainwater is permeated and purified by a bioretention facility and is discharged to a municipal pipe network through an overflow well, and the expected effect is not realized; secondly, the regulation and storage space of the bioretention facility is limited, the infiltration speed of rainwater is reduced gradually, and the effect on controlling the peak value of runoff is not obvious; thirdly, the overflow well is positioned in the green land to influence the landscape, and when the overflow type rainwater port is unreasonably arranged, rainwater in the biological retention facility can be caused to breed mosquitoes and flies for a long time; the rainwater recycling function is not considered in the fourth common method.
Therefore, the inventor of the present invention has made further research on this and developed a system for regulating, storing and recycling rainwater in a bioretention facility.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rainwater storage and recycling system for a bioretention facility, which has the advantages of simple structure, convenience in use and reliable performance.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a rainwater storage and recycling system for bioretention facilities comprises
The biological retention facility comprises a gravel layer positioned at the bottom, and a planting soil layer is arranged on the gravel layer;
the porous penetration pipe is arranged in the gravel layer;
one end of the rainwater collecting pipe is connected with the porous permeation pipe through a three-way connector, and the other end of the rainwater collecting pipe penetrates out of the planting soil layer to be used as an overflow port;
and the outdoor rainwater pipe is communicated with the rainwater collecting pipe and the porous permeation pipe through a three-way connector.
Effectively improves the permeability and the purification capacity, and improves the annual runoff total control rate and the pollution reduction rate of the surface source of the initial rainwater.
Furthermore, a permeable geotextile is arranged between the gravel layer and the planting soil layer.
The permeable geotextile can prevent the soil loss of the planting soil layer.
Furthermore, a pebble stacking layer is stacked around the overflow port of the rainwater collecting pipe, and pebble paving layers are laid on two sides of the bioretention facility.
Pebbles can reduce the erosion of rainwater to the bioretention facilities.
Furthermore, the overflow mouth size is 200 x 200mm, and the overflow mouth exceeds the minimum 100mm of biological retention facility.
Further, the thickness of the planting soil layer is 400-500 mm.
After adopting the scheme, compared with the prior art, the utility model has the following advantages:
the bioretention facility rainwater regulation, storage and recycling system is simple in structure and low in investment, and not only effectively improves the permeability and purification capacity of the underlying surface, but also improves the annual runoff total control rate and the surface source pollution reduction rate of initial rainwater;
the porous penetration pipe and the rainwater collecting pipe are additionally arranged, so that the regulation and storage space of the bioretention facility is increased, the elevation of an off-site rainwater pipe is increased through a PE three-way connector, a part of purified rainwater is stored in the porous penetration pipe, the control on the rainfall peak value is improved, and the stored rainwater can be used for groundwater supplement and plant root system supplement after rainfall;
and thirdly, the overflow port replaces the arrangement of the overflow type inspection well, so that the attractiveness of the project is improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a top view of FIG. 1;
description of the reference symbols
A rainwater collecting pipe 1, a PE three-way connector 2, a PE three-way connector 3, a porous permeation pipe 4,
an outdoor rainwater pipe 5, an overflow port 6, a pebble stacking layer 7, a pebble paving layer 8,
planting soil layer 9, gravel layer 10, geotechnological cloth 11 that permeates water.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
As shown in the figure, the rainwater regulation, storage and recycling system for the bioretention facilities comprises a rainwater collecting pipe 1, a PE three-way connector 2, a PE three-way connector 3, a porous permeation pipe 4, an off-site rainwater pipe 5, an overflow port 6, a pebble stacking layer 7, a pebble paving layer 8, a planting soil layer 9, a gravel layer 10, permeable geotextile 11 and the like.
The rainwater collecting pipe 1 is a DN150 PE permeable pipe, is vertically arranged, is respectively connected with the porous permeation pipe 4 and the off-site rainwater pipe 5 through a PE three-way connector 2 and a PE three-way connector 3, and is provided with a 200 x 200mm overflow port 6 at the top; the overflow mouth is higher than the minimum 100mm of biological detention facility, adopts pebble pile layer 7 (can adopt the yuhua stone for improving the view nature) around the overflow mouth, for reducing the rainwater to the erodeing of biological detention facility, can set up pebble layer 8 of mating formation in biological detention facility both sides.
The planting soil layer 9 is 400-500 mm thick and is generally formed by mixing sand, compost and loamy soil. The main components of the clay-free sand-free concrete comprise 60-85% of sand, 5-10% of organic components and no more than 5% of clay. (permeability coefficient not less than 1X 10-5/m/s);
the thickness of the gravel layer 10 is (100+ the diameter D of the porous permeation tube) mm, the particle size range is 20-30 mm, and the compaction coefficient is more than 80%.
The permeable geotextile has vertical permeability coefficient of more than 1 multiplied by 10cm/s, breaking strength of not less than 20KN/m, CBR bursting strength of not less than 3.5KN, film thickness of not less than 2.8mm, elongation at break of more than 50 percent, and no need of using split film yarn or PE film, and is used for the outer package of the porous permeation tube 4 and the rainwater collection tube 5 and the isolation of gravel layer, planting soil layer and surrounding environment.
According to the rainwater storage and recycling system for the bioretention facility, the porous permeation tube 4 is arranged, rainwater collected in rainy days is stored in the porous permeation tube 4, and water is supplemented through the underground water level of the porous permeation tube 4 and the plant root system in the bioretention facility. When the rainwater is too large, the soil permeability is saturated and the porous permeation tube 4 is fully stored, the rainwater is collected through the rainwater collecting tube 1 and the overflow port 6 and finally discharged into a municipal pipe network through the off-site rainwater tube 5, so that the integrity of a rainwater system is guaranteed.
The above description is only an embodiment of the present invention, and all the terms such as "upper", "lower", "left", "right", "middle", etc. in the present invention are used as reference and not absolutely limited, and all the insubstantial modifications made by the present invention shall fall within the scope of infringing the present invention.
Claims (5)
1. The utility model provides a biological facility rainwater regulation recycling system that is detained which characterized in that: comprises that
The biological retention facility comprises a gravel layer positioned at the bottom, and a planting soil layer is arranged on the gravel layer;
the porous penetration pipe is arranged in the gravel layer;
one end of the rainwater collecting pipe is connected with the porous permeation pipe through a three-way connector, and the other end of the rainwater collecting pipe penetrates out of the planting soil layer to be used as an overflow port;
and the outdoor rainwater pipe is communicated with the rainwater collecting pipe and the porous permeation pipe through a three-way connector.
2. The bioretention facility rainwater regulation and reuse system according to claim 1, wherein: and a permeable geotextile is arranged between the gravel layer and the planting soil layer.
3. The bioretention facility rainwater regulation and reuse system according to claim 1, wherein: pebble stacking layers are stacked around the overflow port of the rainwater collecting pipe, and pebble paving layers are laid on two sides of the bioretention facility.
4. The bioretention facility rainwater regulation and reuse system according to claim 1, wherein: the overflow opening is 200 x 200mm in size, and the overflow opening is 100mm higher than the lowest part of the biological retention facility.
5. The bioretention facility rainwater regulation and reuse system according to claim 1, wherein: the thickness of the planting soil layer is 400-500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121602336.7U CN215483400U (en) | 2021-07-15 | 2021-07-15 | Biological retention facility rainwater regulation and reuse system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121602336.7U CN215483400U (en) | 2021-07-15 | 2021-07-15 | Biological retention facility rainwater regulation and reuse system |
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| Publication Number | Publication Date |
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| CN215483400U true CN215483400U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121602336.7U Active CN215483400U (en) | 2021-07-15 | 2021-07-15 | Biological retention facility rainwater regulation and reuse system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382150A (en) * | 2022-02-28 | 2022-04-22 | 中建八局第二建设有限公司 | Rainwater infiltration regulation and storage facility between LID facilities and construction method thereof |
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2021
- 2021-07-15 CN CN202121602336.7U patent/CN215483400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382150A (en) * | 2022-02-28 | 2022-04-22 | 中建八局第二建设有限公司 | Rainwater infiltration regulation and storage facility between LID facilities and construction method thereof |
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