CN213448753U

CN213448753U - Compound biological facility that is detained

Info

Publication number: CN213448753U
Application number: CN202021961875.5U
Authority: CN
Inventors: 王燕
Original assignee: Jiangsu Zhuyan Design Consulting Co Ltd
Current assignee: Jiangsu Zhuyan Design Consulting Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-06-15
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a compound biological detention facility, the fixed pollutant removing device that is equipped with in inflow end department including biological detention facility, the geotechnological cloth that permeates water is hugged closely to the opposite side that removes the pollutant device, remove the drainage open drain drainage tube and biological detention facility intercommunication in the geotechnological cloth that will permeate water of pollutant device, the outside of removing the pollutant device is established to the filter screen layer, the inside rubble that fills of filter screen layer. In this way, the utility model discloses can optimize biological detention facility inner structure, can satisfy present house, public building and collect the pleasing to the eye requirement of roofing rainwater, can satisfy roofing rainwater infiltration again, reduce rainfall runoff total amount and runoff and pollute.

Description

Compound biological facility that is detained

Technical Field

The utility model relates to a reach sponge urban rainwater and collect and purify technical field, especially relate to a compound biological detention facility.

Background

Since the idea of building a sponge city with natural accumulation, natural permeation and natural purification functions in 2013 is provided, the construction of the sponge city is very fierce, corresponding sponge city technologies are issued in cities in various regions, corresponding facility specifications and law and regulations are clicked, the construction of the sponge city is more and more standardized and mature, and the effect brought by the construction of the sponge city is increasingly obvious.

The sponge city is a city which can be like a sponge, has good elasticity in the aspects of adapting to the environment, coping with natural disasters and the like, absorbs, stores, seeps water and purifies water when raining, and releases and utilizes the stored water when needed. The sponge city system construction method is characterized in that a proper sponge city system construction scheme is provided aiming at the problems and requirements in the aspects of city water safety, water resources, water environment, water ecology and the like, and a sponge city construction system scheme with source reduction, process control and tail end treatment is constructed by applying technical measures of seepage, stagnation, storage, purification, use, discharge and the like.

And in the low-influence development process, the hydrological characteristics before and after field development are kept unchanged by adopting a source and a distributed measure, including runoff total amount, peak flow, peak present time and the like. The low-impact development technology can be generally divided into a plurality of categories such as permeation, storage, regulation, pollutant interception and purification and the like according to main functions. Mainly comprises permeable pavement, roof greening, sunken greenbelt, biological detention facilities, a reservoir, a rain barrel, a vegetation buffer zone and the like.

The bioretention pond is the most common main facility in sponge facilities, is used for gathering and absorbing rainwater from roof or ground, purifies the rainwater through the comprehensive action of plants, sandy soil and gravels, gradually permeates the soil, contains underground water, or supplies urban water such as landscape water, toilet water and the like, and is an ecologically sustainable rainwater flood control and rainwater utilization facility. The building rain drop pipe is usually required to be subjected to disconnection treatment in low-influence development of buildings and communities, rainwater collected, drained and accumulated on a roof enters the building rain drop pipe, the rainwater at the initial stage is filtered to be pretreated, and the overproof rainwater overflows into a comprehensive pipe network.

Ecological factors such as regional characteristics, ecological function positioning, biodiversity, hydrology, water quality, water and soil conservation and the like are comprehensively considered, the requirements of the building residential quarter on landscape and property management are considered, and the balance between the ecological environment attractiveness and the house property landscape development requirements is realized. The analysis and evaluation are mainly carried out on aspects of water safety, water environment, water resources, water ecology and the like.

Along with the deepening of sponge city construction, the runoff control of roof rainwater is more and more emphasized by the newly-built and improved projects of city buildings and districts, the roof rainwater control at present mainly controls the total runoff amount of the roof rainwater and the runoff pollution, the main control form comprises that a garden is made on a roof or a rainwater drop pipe disconnection form is adopted, and rainwater is introduced into sponge facilities around the building through the rainwater drop pipe for treatment. However, most floors of urban residential buildings are too high, the influence of the broken connection and the scattered drainage of the rain drop pipes on the peripheral landscape effect of the buildings is obvious, and in addition, the serious influence is caused on the property management in the later period, so that the later period maintenance is difficult and the complaints of the residential areas are more.

The biological detention facilities commonly used at present mainly have two types, one type is simple type, sets up the overflow well in the biological detention pond, and the overflow facility top surface should be less than catchment surface 100mm generally, from the top down is aquifer, overburden, former soil horizon in proper order. The form is simple, the cost is low, but the facility scale is not arranged in a large dispersion way, and the facility is required to be far away from buildings and structures, so the use is limited. The other type is a complex type, permeable geotextiles are arranged at the bottom of the structure and outside the overflow facilities in the facilities, a water storage layer, a covering layer, a medium soil layer and a gravel layer are sequentially arranged from top to bottom, and a perforated drain pipe is arranged, so that the storage retention capacity of the facilities is improved. Both existing approaches have the following disadvantages: facilities are not arranged in a large scale in a dispersed manner, and are required to be far away from buildings and structures, so that the use is limited; later maintenance is difficult, and the influence on the landscape effect is obvious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a compound biological detention facility, can optimize biological detention facility inner structure, can satisfy present house, public building and to the pleasing to the eye requirement that the roofing rainwater was collected, can satisfy the roofing rainwater infiltration again, reduce rainwater runoff total amount and runoff and pollute.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a compound biological detention facility, including biological detention facility's inflow end department fixed be equipped with remove pollutant device, the opposite side of removing pollutant device hugs closely the geotechnological cloth that permeates water, remove pollutant device with permeate water the open drain drainage tube in the geotechnological cloth with biological detention facility intercommunication, the outside of removing pollutant device is established to the filter screen layer, the inside rubble that fills of filter screen layer.

Further, the filter screen layer is a metal screen layer woven by metal wires.

Furthermore, the metal wires of the filter screen layer are metal wires of a metal coating, and the wire diameter of the metal wires is 2.0mm to 4.0 mm.

Further, the outer layer of the metal wire is coated by PVC, and the total diameter of the coated wire is 3.0mm to 4.5 mm.

Furthermore, the metal wire of the metal coating is galvanized.

Further, a cobble layer is paved at the upper end of the pollutant removing device.

Further, the biological detention facility includes the retaining structure and with the communicating overflow well of retaining structure, the retaining structure is water storage layer, overburden, medium soil layer and gravel layer by last under to in proper order, the medium soil in situ is buried underground and is had with the communicating trompil blind pipe of overflow well.

Furthermore, the overflow well is provided with a drain pipe communicated with a municipal pipe network, and the drain pipe is buried in the gravel layer.

Further, a rubble layer is laid around the overflow well in a circle.

Further, the end face of the decontamination device is lower than the end face of the overflow well.

The utility model has the advantages that: the utility model discloses a compound biological detention facility optimizes biological detention facility inner structure, can satisfy the pleasing to the eye requirement that present house, public building collected the roofing rainwater, can satisfy the roofing rainwater infiltration again, reduces rainfall runoff total amount and runoff and pollutes.

Drawings

FIG. 1 is a schematic view of a composite bioretention facility of the present invention;

fig. 2 is a schematic structural view of a contaminant removing device of a composite bioretention facility of the present invention.

1. A drainage open ditch drainage tube; 2. a screen layer; 3. crushing stone; 4. a cobble layer; 5. an overflow well; 6. a aquifer; 7. a cover layer; 8. a medium soil layer; 9. a gravel layer; 10. opening a blind pipe; 11. a drain pipe; 12. and (4) a crushed stone layer.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.

Referring to fig. 1 to 2, an embodiment of the present invention includes: a composite type bioretention facility comprises a bioretention facility, wherein a pollutant removing device is fixedly arranged at the inflow end of the bioretention facility, the other side of the pollutant removing device is tightly attached to a permeable geotextile, a drainage open ditch drainage tube 1 in the permeable geotextile is communicated with the bioretention facility through the pollutant removing device, a filter screen layer 2 is arranged outside the pollutant removing device, and broken stones 3 are filled in the filter screen layer 2.

Further, the filter screen layer 2 is a metal screen layer woven by metal wires.

Furthermore, the metal wires of the filter screen layer 2 are metal wires with metal coatings, and the wire diameter of the metal wires is 2.0mm to 4.0 mm.

Furthermore, the metal wire of the metal coating is galvanized.

Further, a cobble layer 4 is paved at the upper end of the pollutant removing device.

Further, the biological detention facility include the retaining structure and with the communicating overflow well 5 of retaining structure, the retaining structure is by last water storage layer 6, overburden 7, medium soil layer 8 and gravel layer 9 in proper order down, bury underground in the medium soil layer 8 with the communicating trompil blind pipe 10 of overflow well 5.

Further, the overflow well 5 is provided with a drain pipe 11 communicated with a municipal pipe network, and the drain pipe 11 is buried in the gravel layer 9.

Further, a gravel layer 12 is laid around the overflow well 5.

Further, the end face of the decontamination device is lower than the end face of the overflow well 5.

The utility model has the advantages that: the utility model discloses a compound biological detention facility optimizes biological detention facility inner structure, can satisfy the pleasing to the eye requirement that present house, public building collected the roofing rainwater, can satisfy again that the roofing rainwater infiltrates, reduces rainfall runoff total amount and runoff pollution

The utility model relates to a compound biological detention facility, biological detention facility's the fixed pollutant device that is equipped with of inlet end department, the geotechnological cloth that permeates water in the facility outside is hugged closely to the pollutant device, with the biological detention facility of introducing of drainage open drain drainage tube, infiltrates to the inside entering medium soil layer of biological detention facility through gravity and gap, can effectively carry out the pollutant and get rid of, rainwater accessible overflow entering catch basin exceeds standard on the one hand, near the catch basin is arranged into to the drain pipe of on the other hand accessible bottom.

Combine the decontamination device with biological detention facility, increased the ability of getting rid of rainwater runoff and polluting suspended solid SS at the drainage front end of biological detention facility, reduced the runoff total amount and the runoff pollution of roofing, can improve the clearance of facility SS, reduce water pressure. Meanwhile, the maintenance and the repair of later-period facilities are facilitated, infiltration and drainage conditions can be checked at any time, the stone dragon facilities can be conveniently taken out and replaced at regular time, and the landscape effect of high-standard communities and public buildings and the requirements of property management can be met.

In the biological retention facility in the form, the particle size of the crushed stone filled in the pollutant removing device is 50-60mm, and the crushed stone is clean and has no impurities and no soil and powder layer on the surface of the stone. The filter screen layer of the pollutant removing device is woven by metal wires with metal coatings, and/or the filter screen layer is woven by low-carbon steel wires or steel wires coated with PVC (polyvinyl chloride) with high corrosion resistance, high strength and ductility. The metal wires are metal-plated and have a wire diameter of 2.0mm to 4.0mm, and if the metal wires are PVC-coated, PVC (metal) wires having an outer diameter of 3.0mm to 4.5mm are used for the braiding.

The utility model relates to a beneficial effect or advantage of compound biological detention facility:

a, optimizing the connection form of the biological retention facility and a rain drop pipe, and reducing the scouring damage of rain water to the facility.

And B, the damage of the disconnection of the raindrop pipe to the landscape effect is reduced.

C is with energy dissipation gabion and biological detention facility integrated design, and the structure is simple and easy, makes things convenient for later maintenance and simple to operate.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The composite type bioretention facility is characterized by comprising a bioretention facility, wherein a pollutant removing device is fixedly arranged at the inflow end of the bioretention facility, the other side of the pollutant removing device is tightly attached to a permeable geotextile, a drainage open ditch drainage tube in the permeable geotextile is communicated with the bioretention facility through the pollutant removing device, a filter screen layer is arranged outside the pollutant removing device, and broken stones are filled in the filter screen layer.

2. A complex bioretention installation according to claim 1 wherein: the filter screen layer is a metal screen layer woven by metal wires.

3. A complex bioretention installation according to claim 2 wherein: the metal wires of the filter screen layer are metal wires of a metal coating, and the wire diameter of the metal wires is 2.0mm to 4.0 mm.

4. A complex bioretention installation according to claim 3 wherein: the outer layer of the metal wire is coated by PVC, and the total diameter of the coated wire is 3.0mm to 4.5 mm.

5. A complex bioretention installation according to claim 3 wherein: the metal wire of the metal coating is galvanized.

6. A complex bioretention installation according to claim 1 wherein: and a cobble layer is paved at the upper end of the pollutant removing device.

7. A complex bioretention installation according to claim 1 wherein: the bioretention facility includes the retaining structure and with the communicating overflow well of retaining structure, the retaining structure is water storage layer, overburden, medium soil layer and gravel layer by last under to in proper order, the medium soil in situ is buried underground and is had with the communicating trompil blind pipe of overflow well.

8. A complex bioretention installation according to claim 7 wherein: the overflow well is provided with a drain pipe communicated with a municipal pipe network, and the drain pipe is buried in the gravel layer.

9. A complex bioretention installation according to claim 7 wherein: and a rubble layer is laid around the overflow well.

10. A complex bioretention installation according to any one of claims 1 or 7 wherein: the end face of the pollution removing device is lower than the end face of the overflow well.