CN206256506U - A road rainwater collection and ecological treatment device - Google Patents

Abstract

The utility model discloses a road rainwater collection and ecological treatment device, which comprises a water collection tank, a plant ditch and an overflow well. The plant ditch is successively composed of a vegetation layer, a substrate layer and a quartz sand layer from top to bottom. A seepage diversion pipe is arranged in the sand layer, and the seepage diversion pipe extends into the overflow well, and an overflow pipe is arranged on the surface of the vegetation layer, and the overflow pipe extends into the sump. The beneficial effects of the utility model are: it can collect and purify the initial rainwater on the road surface, reduce non-point source pollution, promote the utilization of rainwater resources and ecological environment protection, and is consistent with the current design concept of "sponge city".

Description

A road rainwater collection and ecological treatment device

technical field

The utility model relates to a road rainwater collection and ecological treatment device, which uses plants to collect and process rainwater on the road, and belongs to the technical field of environmental protection.

Background technique

The collection and purification of rainwater on urban roads is a wide-ranging systematic project, specifically related to the control of rainwater runoff, flood mitigation, collection and utilization of rainwater as reclaimed water sources, rational design of urban water systems and ecological environment construction. One of the important contents of my country's development of circular economy has been included in the "National Medium and Long-Term Science and Technology Development Program Outline".

Sponge city refers to a city that can be like a sponge and has good "elasticity" in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs, stores, infiltrates, and purifies water. use. Sponge city construction should follow the principles of ecological priority, combine natural approaches with artificial measures, and ensure the safety of urban drainage and waterlogging, maximize the accumulation, infiltration and purification of rainwater in urban areas, and promote the use of rainwater resources and ecological environment protection.

At present, the traditional municipal drainage system in my country's cities mainly has the following shortcomings:

1. When encountering heavy rain, it is easy to cause urban waterlogging and water accumulation;

2. Rainwater immersion carries a large amount of domestic garbage and pollutants on the ground, aggravating the non-point source pollution of natural water bodies;

3. A large amount of rainwater is discharged into the natural water body through the municipal pipe network, causing damage to the ecological environment of the water body;

4. The loss of rainwater resources is serious.

Therefore, combining the design concept of "sponge city", designing and developing a road rainwater collection and ecological treatment system, so that the city can "elastically adapt" to changes in the natural environment, is of great significance for reducing urban non-point source pollution.

Utility model content

The purpose of the invention of the utility model is to provide a road rainwater collection and ecological treatment device for the above existing problems, which mainly solves the problems of initial rainwater collection and purification on the road surface and urban non-point source pollution.

The technical scheme that the utility model adopts is such:

A road rainwater collection and ecological treatment device, including a water collection tank, a plant ditch and an overflow well, the plant ditch is followed by a vegetation layer, a matrix layer and a quartz sand layer from top to bottom, and the quartz sand layer is provided with The seepage diversion pipe extends into the overflow well, and the overflow pipe is arranged on the surface of the vegetation layer, and the overflow pipe extends into the sump.

Preferably, a water outlet pipe is provided at the bottom of the overflow well.

Preferably, the top of the sump is provided with a sump cover. Likewise, preferably, an overflow well cover is provided on the top of the overflow well. After the cover plate is set on the top of the sump and the overflow well, it can effectively prevent pedestrians, vehicles, pets or garbage from falling into it.

Preferably, an inspection ladder is installed on the inner wall of the overflow well. The inspection ladder is convenient for maintenance personnel to inspect and maintain the dredging of underground pipelines.

Preferably, the top of the sump is separated from the top of the plant ditch by curb stones.

Preferably, the depth of the sump is 800-1000mm. Preferably, the thickness of the vegetation layer is 25-35mm, the thickness of the substrate layer is 150-350m, and the thickness of the quartz sand layer is 350-450mm.

In summary, due to the adoption of the above technical solution, the utility model has the beneficial effects of collecting and purifying the initial rainwater on the road surface, reducing non-point source pollution, promoting the utilization of rainwater resources and ecological environment protection, which is different from the current It is consistent with the design concept of "sponge city".

Description of drawings

Fig. 1 is a structural representation of the utility model.

Marks in the figure: 1 is the cover plate of the sump, 2 is the sump, 3 is the roadside stone, 4 is the overflow pipe, 5 is the plant ditch, 6 is the vegetation layer, 7 is the matrix layer, 8 is the quartz sand layer, 9 For an overflow well, 10 is an overflow well cover plate, 11 is a seepage diversion pipe, 12 is an outlet pipe, and 13 is an inspection ladder.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail.

As shown in Figure 1, a kind of road rainwater collection and ecological treatment device, comprises sump 2, plant ditch 5 and overflow well 9, in described plant ditch 5 successively is vegetation layer 6, matrix layer 7 and Quartz sand layer 8, the quartz sand layer 8 is provided with a seepage guide pipe 11, the seepage guide pipe 11 extends into the overflow well 9, and the overflow pipe 4 is arranged on the surface of the vegetation layer 6, and the overflow pipe 4 extends into the sump 2.

A water outlet pipe 12 is provided at the bottom of the overflow well 9 .

The top of the sump 2 is provided with a sump cover 1 .

The top of the overflow well 9 is provided with an overflow well cover plate 10 .

An inspection ladder 13 is installed on the inner wall of the overflow well 9 .

The top of the sump 2 and the top of the plant ditch 5 are separated by curb stones 3 .

The depth of the sump 2 is 800-1000mm.

The thickness of the vegetation layer 6 is 25-35mm. The vegetation layer 6 has the functions of consuming a large amount of solar energy, replenishing moisture in the air, regulating air humidity, retaining dust, absorbing carbon dioxide, releasing oxygen, and absorbing harmful gases.

The thickness of the substrate layer 7 is 150-350m, and organic soil, humus, organic fertilizer, peat or peat are usually used to ensure that the plant growth layer is soft, well-ventilated and cultivated, and has better water storage and drainage. While meeting the normal growth requirements of plants, it can also effectively reduce the BOD, COD, and SS contents in rainwater.

The quartz sand layer 8 has a thickness of 350-450mm, which is used to effectively intercept and remove suspended matter, organic matter, colloidal particles, microorganisms, chlorine, smell and some heavy metal ions in water, and to reduce water turbidity and purify water quality.

The utility model can be directly laid on both sides of the required road, which effectively reduces the construction links and reduces the construction cost. The rainwater collected through the plant ditch can meet the water quality requirements of reclaimed water reuse through its own physical filtration function, and can reach the water quality of greening, water supply and artificial lake replenishment. It is safe to use and low in cost, and the cost of using rainwater for reclaimed water and landscape water is greatly reduced.

Claims (8)

1. A road rainwater collection and ecological treatment device, characterized in that: it includes a sump (2), a plant ditch (5) and an overflow well (9), and the plant ditch (5) is sequentially from top to bottom The vegetation layer (6), the substrate layer (7) and the quartz sand layer (8), the quartz sand layer (8) is provided with a seepage diversion pipe (11), and the seepage diversion pipe (11) extends into the overflow well (9), an overflow pipe (4) is arranged on the surface of the vegetation layer (6), and the overflow pipe (4) extends into the sump (2). 2. The road rainwater collection and ecological treatment device according to claim 1, characterized in that: a water outlet pipe (12) is provided at the bottom of the overflow well (9). 3. A road rainwater collection and ecological treatment device according to claim 1, characterized in that: the top of the sump (2) is provided with a sump cover (1). 4. A road rainwater collection and ecological treatment device according to claim 1, characterized in that: the top of the overflow well (9) is provided with an overflow well cover plate (10). 5. A road rainwater collection and ecological treatment device according to claim 1 or 4, characterized in that: an inspection ladder (13) is installed on the inner wall of the overflow well (9). 6 . The road rainwater collection and ecological treatment device according to claim 1 , characterized in that: the top of the sump ( 2 ) and the top of the plant ditch ( 5 ) are separated by road curbs ( 3 ). 7. The road rainwater collection and ecological treatment device according to claim 1, characterized in that: the depth of the sump (2) is 800-1000mm. 8. A road rainwater collection and ecological treatment device according to claim 1, characterized in that: the thickness of the vegetation layer (6) is 25-35mm, the thickness of the matrix layer (7) is 150-350m, the The quartz sand layer (8) has a thickness of 350-450mm.