WO2022217749A1 - Jardin à filtration d'eau de pluie - Google Patents

Jardin à filtration d'eau de pluie Download PDF

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Publication number
WO2022217749A1
WO2022217749A1 PCT/CN2021/102997 CN2021102997W WO2022217749A1 WO 2022217749 A1 WO2022217749 A1 WO 2022217749A1 CN 2021102997 W CN2021102997 W CN 2021102997W WO 2022217749 A1 WO2022217749 A1 WO 2022217749A1
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WO
WIPO (PCT)
Prior art keywords
rainwater
pipe
layer
planting
water
Prior art date
Application number
PCT/CN2021/102997
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English (en)
Chinese (zh)
Inventor
李茂林
赵昕
薛晓宁
李建业
申静
霍新霖
王岩
Original Assignee
中国建筑设计研究院有限公司
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Publication of WO2022217749A1 publication Critical patent/WO2022217749A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108—Rainwater harvesting

Definitions

  • This patent belongs to the technical field of rain gardens, and specifically relates to a rainwater filtration garden.
  • Rain gardens are common ecological facilities in sponge cities, which are generated by combining additional bioretention functions and landscape leisure and viewing functions on the basis of the form of sunken green spaces.
  • the planting matrix and the microorganisms in the grassroots the regulation, storage, infiltration and purification can be achieved, so as to provide effective purification treatment of rainwater, and rely on the space provided by the concave surface and the pores of the underground gravel layer to regulate and store rainwater. .
  • the ground rainwater runoff is filtered by the upper vegetation to remove impurities such as leaves, branches, and gravel particles mixed in the rainwater, and then the next step is filtered by infiltration layer by layer, and the filtered rainwater directly seeps into the ground.
  • the rain garden conforms to the concept of sponge city, due to its simple structure, the filtration effect is poor after a period of operation, which not only reduces the filtration and purification function of rainwater, but also is difficult to maintain in the later stage.
  • the rainwater resources are not fully utilized, which is not in line with the concept of sponge city construction.
  • the present utility model aims to provide a rainwater filter garden to solve the problem that the existing rainwater garden has poor filtering effect after running for a period of time, and the filtered rainwater is directly discharged into the rainwater pipe network, and the rainwater resources are not fully utilized. .
  • a rainwater filtration garden comprising:
  • the pit is formed by excavation in the original soil layer.
  • the water storage layer, permeable layer and planting soil layer are laid from bottom to top in the pit, and the top surface of the planting soil layer forms a concave planting space;
  • Rainwater storage pipe the water inlet of the rainwater storage pipe is located outside the concave planting space for rainwater to sink in, and the outlet of the rainwater storage pipe is located inside or outside the concave planting space, used to guide rainwater into the concave planting space;
  • the overflow pipe vertically penetrates the permeable layer and the planting soil layer, the opening of the first end of the overflow pipe is located in the concave planting space, and the opening of the second end of the overflow pipe is located in the water storage layer;
  • the perforated pipe is laid inside the water storage layer, and the perforated pipe is connected to the ground water point through the drainage pipe.
  • overflow pipe is in direct communication with the perforated pipe.
  • the top surface of the planting soil layer has a planting plane and a side slope, the planting plane and the side slope are transitionally connected, and the slope of the side slope is 3:1; the distance from the first end opening above the planting plane is 150-230mm.
  • the perforated pipe is arranged horizontally and is located 10-50mm above the bottom surface of the water storage layer.
  • the number of perforated pipes is at least two, which are evenly distributed in the water storage layer.
  • At least one of the overflow pipe, the perforated pipe, and the drain pipe is a PVC pipe.
  • the water storage layer is stacked with gravel of a first particle size
  • the permeable layer is stacked with gravel of a second particle size, and the first particle size is larger than the second particle size.
  • the first particle size is 20-40mm
  • the second particle size is 10-20mm
  • the thickness of the water storage layer is 300mm
  • the thickness of the permeable layer is 80mm
  • the thickness of the planting soil layer is 150-300mm.
  • both the water storage layer and the permeable layer are wrapped with permeable geotextiles.
  • the perforated pipe is wrapped with a permeable geotextile; the bottom wall and the side wall of the pit are covered with an anti-seepage geotextile.
  • the first end opening of the overflow pipe is provided with an anti-backflow component.
  • the present invention can achieve at least one of the following beneficial effects:
  • the rainwater is filtered and purified through the plant root system, the mulch layer and the multi-level permeable layer.
  • the filtering effect is good and the water quality is guaranteed.
  • the filtered rainwater is stored in the water storage layer, and the perforated pipe laid in the water storage layer, Unified drainage for use at water points, making full use of rainwater resources.
  • the perforated pipe is wrapped with a permeable geotextile, which can effectively prevent soil particles from clogging the holes and ensure its working reliability.
  • the opening of the first end of the overflow pipe is provided with a ventilation cap, and the ventilation cap has the function of filtering impurities, which can prevent impurities from entering the overflow pipe and cause blockage, and solve the problem of clogging of the overflow pipe.
  • the structure is simple, the construction is convenient, and the cost is low. Through the refined structure, the water quality treatment effect is good, and it can also be used for rural decentralized small sewage treatment, which has a wide application prospect.
  • FIG. 1 is a schematic cross-sectional view of a rainwater filtration garden of the present invention
  • FIG. 2 is a top view of the rainwater filtration garden of the present invention.
  • a specific embodiment of the present utility model discloses a rainwater filtration garden, including:
  • the pits are excavated in the original soil layer 1.
  • water storage layers 2, permeable layers 3 and planting soil layers 4 are laid sequentially from bottom to top.
  • the rainwater storage pipe 8 is used to introduce rainwater into the concave planting space.
  • the water inlet of the rainwater storage pipe 8 is located outside the concave planting space for rainwater to sink in; the water outlet of the rainwater storage pipe 8 is located in the concave planting space.
  • the overflow pipe 7 is arranged through the permeable layer 3 and the planting soil layer 4.
  • the overflow pipe 7 is arranged perpendicular to the horizontal plane.
  • the two ends of the overflow pipe 7 respectively have a first end opening and a second end opening. In the concave planting space, the second end opening is located in the water storage layer 2 .
  • the perforated pipe 11 is laid inside the water storage layer 2, and the perforated pipe 11 is connected with a drain pipe 12, and the drain pipe 12 is connected with the ground water point.
  • the top surface of the planting soil layer 4 has a planting plane and a side slope, the planting plane and the side slope are connected in transition, and the slope of the side slope is 3:1, which can quickly and advantageously reach the required depth, and solves the problem of under the rain garden. Concave security issues.
  • the pipe overflow pipe 7 is used as a rainwater collection pipe
  • the first end opening of the overflow pipe 7 is 150-230mm higher than the planting soil layer 4
  • the first end opening is used as an overflow port, and a small amount of rainwater directly falls into
  • the first end of the overflow pipe 7 is opened and enters the water storage layer; as the rainfall progresses, the water level continues to rise.
  • the rainwater is higher than the opening of the first end, the rainwater enters the water storage layer through the overflow pipe 7 to realize overflow Function.
  • the rainwater entering the water storage layer 2 through the overflow pipe 7 will pollute the filtered rainwater in the water storage layer 2.
  • the overflow pipe 7 is directly connected with the perforated pipe 11, because the overflow pipe 7 is connected to the perforated pipe. 11 is directly connected.
  • an optional implementation in this embodiment is to lay anti-seepage geotextiles 5 on the bottom wall and sidewall of the pit, and prevent rainwater from seeping out by laying anti-seepage geotextiles Rainwater collection efficiency.
  • the perforated pipe 11 is wrapped with a permeable geotextile, which can effectively prevent soil particles from blocking the holes and ensure its working reliability.
  • the perforated pipes 11 are arranged horizontally, and the perforated pipes 11 are located 10-50 mm above the bottom surface of the water storage layer 2; the number of perforated pipes 11 is at least two, which are evenly distributed in the water storage layer 2, and the perforated pipes 11 are provided with at least one outlet.
  • the water outlet and the water outlet are connected with a drainage pipe 12 , and the drainage capacity can be improved by arranging a plurality of perforated pipes 11 .
  • the water storage layer 2 is stacked with gravel of a first particle size
  • the permeable layer 3 is stacked with gravel of a second particle size, and the first particle size is larger than the second particle size.
  • the number of permeable layers 3 is multi-layered, and from top to bottom, the permeability of the permeable layer increases sequentially, the particle size of the gravel gradually increases, and the thickness of the permeable layer increases sequentially.
  • the first particle size is 20-40mm, and the second particle size is 10-20mm; the thickness of the water storage layer 2 is 300mm, the thickness of the permeable layer 3 is 80mm, and the thickness of the planting soil layer 4 is the planting plane to the permeable layer.
  • the top surface distance of layer 3 is 150-300mm.
  • the water storage layer 2 and the permeable layer 3 are both wrapped with permeable geotextiles.
  • the gravel is screened according to the range of the first particle size and the second particle size, and the first particle size gravel is wrapped into the water storage layer 2 and the second particle size gravel is wrapped into the water permeable layer 3 by using permeable geotextiles.
  • permeable geotextiles to wrap the gravel is convenient for the gravel to maintain a stable shape and easy to lay, and the use of permeable geotextiles can filter small particles of soil particles to prevent soil from filling in the gaps of the permeable layer 3 and the water storage layer 2, ensuring that Penetration and effluent functions.
  • a mulch layer 6 is laid on the top surface of the planting soil layer 4, which helps to avoid the loss of surface soil.
  • the opening of the first end of the overflow pipe 7 is provided with a ventilation cap, and the ventilation cap has the function of filtering impurities to prevent floating impurities from entering the overflow pipe 7 to cause blockage, and to ensure the reliability of the overflow.
  • the first end opening of the overflow pipe 7 is provided with an anti-backflow component, and the anti-backflow component adopts the form of a floating casing.
  • the inner wall is in sealing contact with the outer wall of the overflow pipe 7, the extension pipe can partially overlap with the overflow pipe 7, and annular foam is arranged outside the extension pipe, the inner diameter of the annular foam is equal to the outer diameter of the extension pipe, and the outer diameter of the annular foam is equal to 2-3 Double the outer diameter of the extension pipe, and the length of the overlapping portion of the extension pipe and the overflow pipe 7 ranges from 50mm to 100mm.
  • the extension pipe When the rainwater is too large, the extension pipe will float under the buoyancy of the annular foam, and the annular foam will drive the extension pipe to move upward, which can appropriately increase the height of the water inlet of the overflow pipe 7, and the maximum lifting height is about 100mm, so that to a certain extent Prevent rainwater from pouring into the overflow pipe 7.
  • the water level is too high and exceeds the maximum overflow water level of the overflow pipe 7, the rainwater enters the water storage layer through the opening of the first end to realize the overflow drainage function; when the water level drops, the extension pipe down until reset.
  • the anti-backflow component By setting the anti-backflow component, the height of the overflow pipe 7 exposed to the ground can be reduced, which is more beautiful, and reduces the defect that the overflow pipe is easily bent and damaged due to the excessive length of the overflow pipe.
  • the water outlet of the rainwater storage pipe 8 is located at the top of the side slope, and the energy dissipation mechanism 9 is laid within the falling water range of the water outlet to prevent scouring.
  • the energy dissipating mechanism 9 is stacked with gravel, the source of the gravel is wide, the cost is low, and the garden slope can be made more beautiful by piling and arranging the gravel in a pattern.
  • At least one of the overflow pipe 7, the perforated pipe 11 and the drain pipe 12 is a PVC pipe.
  • PVC pipe has excellent tensile strength, compressive strength and corrosion resistance, and has a wide range of sources and low cost.
  • the rainwater When rainfall occurs, the rainwater directly falls into the concave planting space, or enters the concave planting space through the rainwater storage pipe 8, and the rainwater flowing out from the rainwater storage pipe 8 passes through the pebbles to dissipate energy, and then flows around or infiltrates downward to plant plants.
  • the planting soil layer of 10 absorbs a certain amount of water, and the rainwater seeps down after its own moisture content is saturated.
  • the rainwater is purified by the filtering and interception of the intermediate gravel permeable layer 3 and the gravel of the water storage layer 2.
  • the rainwater With the infiltration of rainwater, when the water level of the rainwater in the water storage layer is higher than the perforated pipe 11, the rainwater is collected in the perforated pipe 11 through the holes, and finally discharged to the water point through the drain pipe 12 for reuse.
  • the rainwater accumulates on the surface of the concave planting space, and when the water level in the concave planting space is higher than the opening of the first end of the overflow pipe 7, the rainwater enters the overflow pipe, The rainwater is directly discharged through the perforated pipe 11 to minimize the unfiltered rainwater entering the water storage layer, thereby reducing the pollution to the water storage layer.
  • the rainwater filtration garden provided by this embodiment has at least the following beneficial effects:
  • the rainwater is filtered and purified through the plant root system, the mulch layer and the multi-level permeable layer.
  • the filtering effect is good and the water quality is guaranteed.
  • the filtered rainwater is stored in the water storage layer, and the perforated pipe laid in the water storage layer, Unified drainage for use at water points, making full use of rainwater resources.
  • the perforated pipe is wrapped with a permeable geotextile, which can effectively prevent soil particles from clogging the holes and ensure its working reliability.
  • the opening of the first end of the overflow pipe is provided with a ventilation cap, and the ventilation cap has the function of filtering impurities, which can prevent impurities from entering the overflow pipe and cause blockage, and solves the problem of clogging of the overflow pipe.
  • the water outlet of the rainwater storage pipe is located at the top of the slope, and the energy dissipation mechanism is laid within the falling water range of the water outlet.
  • the energy dissipation mechanism is piled with gravel, which can not only prevent scour, but also arrange the gravel by pattern stacking. , can make the garden slope more beautiful.
  • the 3:1 slope can quickly and advantageously reach the required depth, and solve the problem of the safety of the rain garden sinking.
  • the structure is simple, the construction is convenient, and the cost is low. Through the refined structure, the water quality treatment effect is good, and it can also be used for rural decentralized small sewage treatment, which has a wide application prospect.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Botany (AREA)
  • Biotechnology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental Sciences (AREA)
  • Sewage (AREA)
  • Treatment Of Biological Wastes In General (AREA)

Abstract

L'invention concerne un jardin à filtration d'eau de pluie qui comprend : une rainure de type fosse formée par excavation d'une couche de sol d'origine (1), une couche de stockage d'eau (2), une couche perméable à l'eau (3), et une couche de sol de plantation (4) étant disposée dans la rainure de type fosse de bas en haut, et un espace de plantation concave étant défini par la surface supérieure de la couche de sol de plantation (4) ; un tuyau de stockage d'eau de pluie (8), une entrée d'eau de celui-ci étant située à l'extérieur de l'espace de plantation concave pour la collecte d'eau de pluie, et une sortie d'eau du tuyau de stockage d'eau de pluie étant située à l'intérieur ou le long du bord de l'espace de plantation concave et utilisée pour guider l'eau de pluie dans l'espace de plantation concave ; un tuyau de trop-plein (7), pénétrant perpendiculairement à travers la couche perméable à l'eau (3) et la couche de sol de plantation (4), une première ouverture d'extrémité du tuyau de trop-plein étant située dans l'espace de plantation concave, et une seconde ouverture d'extrémité étant située dans la couche de stockage d'eau (2) ; et un tuyau perforé (11), disposé à l'intérieur de la couche de stockage d'eau (2) et relié à un site de consommation d'eau souterraine au moyen d'un tuyau de drainage (12). L'eau de pluie filtrée par le jardin à filtration d'eau de pluie est uniformément évacuée au moyen du tuyau perforé pour être utilisée par le site de consommation d'eau, et la ressource d'eau de pluie est complètement utilisée.
PCT/CN2021/102997 2021-04-13 2021-06-29 Jardin à filtration d'eau de pluie WO2022217749A1 (fr)

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CN202120744701.1U CN215223342U (zh) 2021-04-13 2021-04-13 一种雨水过滤花园
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CN116873994A (zh) * 2023-07-18 2023-10-13 秦皇岛冀水水利建筑工程有限公司 一种适用于多地形植草沟滞滤净化系统

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CN108918082A (zh) * 2018-08-15 2018-11-30 浙江省水利河口研究院 一种抽屉式雨水花园典型绿化箱体及其使用方法
CN114319537B (zh) * 2022-02-22 2024-06-07 四川省建筑设计研究院有限公司 一种可增强雨水净化下渗功能的海绵系统
CN115095087A (zh) * 2022-06-24 2022-09-23 浙江国兴建设集团有限公司 一种绿色建筑节能屋面
CN115428664B (zh) * 2022-09-30 2024-01-23 中国电建集团成都勘测设计研究院有限公司 一种水下种植乔木的装置

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CN112544349A (zh) * 2020-11-09 2021-03-26 江苏龙腾工程设计股份有限公司 一种绿色海绵专用水量自控型雨水花园及施工方法

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CN207760187U (zh) * 2017-07-25 2018-08-24 广州普邦园林股份有限公司 一种基于海绵城市的生态雨水花园
CN207608983U (zh) * 2017-09-21 2018-07-13 安徽省高迪科技有限公司 一种综合型的雨水花园系统
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CN112544349A (zh) * 2020-11-09 2021-03-26 江苏龙腾工程设计股份有限公司 一种绿色海绵专用水量自控型雨水花园及施工方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116873994A (zh) * 2023-07-18 2023-10-13 秦皇岛冀水水利建筑工程有限公司 一种适用于多地形植草沟滞滤净化系统

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