CN207243686U - A kind of overpass rain processing system - Google Patents

Abstract

The utility model relates to a rainwater treatment system for a viaduct, which includes a viaduct body, a green belt and a rainwater treatment system; by setting downspouts, the rainwater on the bridge surface of the viaduct is diverted to a sedimentation tank, and the sediment mixed in the rainwater is drained by the sedimentation tank Wait for the initial precipitation of the sewage, and then introduce the rainwater after the initial precipitation into the matrix layer of the green belt through the water inlet, thus realizing the automatic irrigation of the green belt under the viaduct, saving the labor cost and water cost of irrigation of the green belt under the bridge, It is not easy to cause soil compaction, which is conducive to the healthy growth of plants, and the outlet pipe is connected to the lower part of the other side of the green belt, so that the tank forms an artificial wetland with horizontal underflow, which is conducive to the uniform flow of rainwater through the entire substrate layer, while the excess water passes through. The outlet pipe is discharged to the municipal pipe network. Since the rainwater is purified by the sedimentation tank, it will not cause rainwater runoff pollution.

Description

A Viaduct Rainwater Treatment System

technical field

The utility model relates to the technical field of rainwater treatment, in particular to a viaduct rainwater treatment system.

Background technique

At present, many cities in China are facing the problems of waterlogging and runoff pollution during the flood season at the same time, especially the problem of runoff pollution is very serious. The initial rainwater carries a large amount of pollutants from the surface, urban sewage and rainwater pipe network, resulting in urban point source pollution. After land control, the urban non-point source pollutants brought by the initial rainwater have become an important pollution source of urban rivers, lakes and other receiving water bodies, and it is an important reason for the imbalance of urban water ecology.

After years of construction, the viaduct road network system in many cities is becoming more and more perfect, and the length is getting longer and longer. On the viaduct deck, due to tire wear, exhaust pollution, and atmospheric dry and wet deposition, etc., a large amount of pollutants have accumulated on the elevated road surface. These pollutants are washed by rainwater to form bridge deck runoff, which passes through downpipes and collection wells and passes through rainwater pipes without treatment. The initial runoff of these rainwater carrying a large amount of pollutants has brought serious pressure on the ecology of urban water systems. On the other hand, most of the elevated roads are shrub green belts. Since they cannot accept natural precipitation, the green maintenance basically depends on artificial irrigation of tap water. High-frequency irrigation not only consumes a lot of tap water resources, but also easily causes sudden hardening, which is not conducive to plant growth.

Utility model content

The technical problem to be solved by the utility model is: to provide a viaduct rainwater treatment system to solve the problem of rainwater runoff pollution generated in the existing viaduct structure and difficult management of the green belt under the bridge.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a viaduct rainwater treatment system, including viaduct body, green belt and rainwater treatment system;

The viaduct body includes a bridge body and a pier column; the pier column is connected to the lower part of the bridge body, and the position of the bridge body corresponding to the pier column is provided with a rain leak;

The green belt is arranged under the bridge body, and the green belt includes a horizontally arranged tank body, a substrate filled in the tank body and shrubs planted on the substrate;

The rainwater treatment system includes a downpipe, a sedimentation tank, a water inlet pipe and a drain pipe;

The sedimentation tank is buried in the side of the tank body, and the bottom of the sedimentation tank is lower than the bottom of the tank body; the sedimentation tank is connected with the tank body through a water inlet pipe, and the end of the water inlet pipe is located at the upper side of the tank body;

The beginning of the drainage pipe is connected to the side of the tank body opposite to the location of the sedimentation tank, and the end of the drainage pipe is connected to the municipal pipe network.

The beginning of the downpipe is connected to the rain drain, and the end of the downpipe is connected to the sedimentation tank.

Further, the tank body includes an upper layer and a lower layer, the upper layer is filled with matrix, the lower layer is filled with gravel, and the upper layer and the lower layer are separated by a geotextile.

Further, the downpipe includes a downwater main pipe and a plurality of downwater pipes, the beginning of the downwater main pipe is connected to the rain drain, the end of the downwater main pipe is located in the sedimentation tank, and the beginning of the downwater pipe is connected to the end of the downwater main pipe. The end of the downspout is located at the bottom of the sedimentation tank.

Further, a strainer is provided at the beginning of the drain pipe.

Further, the bottom of the sedimentation tank is filled with pebbles.

The beneficial effect of the utility model is that: in the viaduct rainwater treatment system involved in the utility model, the rainwater on the bridge surface of the viaduct is diverted to the sedimentation tank by setting the downpipe, and the silt and other dirt mixed in the rainwater are drained into the sedimentation tank through the sedimentation tank. Preliminary precipitation is carried out, and then the rainwater after preliminary precipitation is introduced into the matrix layer of the green belt through the water inlet pipe, thereby realizing automatic irrigation of the green belt under the viaduct, saving labor costs and water costs for irrigation of the green belt under the bridge, and is not easy to cause The compaction of the soil is conducive to the healthy growth of plants, and the outlet pipe is connected to the lower part of the other side of the green belt, so that the tank forms an artificial wetland with horizontal underflow, which is conducive to the uniform flow of rainwater through the entire substrate layer, and the excess water is drained through the outlet pipe. To the municipal pipe network, because the rainwater is purified by the sedimentation tank, it will not cause rainwater runoff pollution.

Description of drawings

Fig. 1 is the structural representation of a kind of viaduct rainwater treatment system of the specific embodiment of the present invention;

Label description:

1. Bridge body; 2. Pier column; 3. Tank body; 4. Substrate; 5. Shrubs; 6. Downpipe; 61. Downwater main; 62. Downwater pipe; 7. Sedimentation tank; 8. Inlet pipe; 9. Drainage tube; 10, gravel; 11, geotextile.

Detailed ways

In order to describe the technical content, the achieved purpose and the effect of the present utility model in detail, the following will be described in conjunction with the embodiments and accompanying drawings.

The most critical idea of the utility model is: by setting downspouts, the rainwater on the bridge surface of the viaduct is diverted to the sedimentation tank, and the sediment and other dirt mixed in the rainwater are preliminarily precipitated through the sedimentation tank, and then the preliminarily precipitated The rainwater is introduced into the matrix layer of the green belt through the water inlet pipe, thus realizing the automatic irrigation of the green belt under the viaduct.

Please refer to Figure 1, the utility model relates to a viaduct rainwater treatment system, including viaduct body, green belt and rainwater treatment system;

The viaduct body includes a bridge body 1 and a pier column 2; the pier column 2 is connected to the lower part of the bridge body 1, and the position of the bridge body 1 corresponding to the pier column 2 is provided with a rain leak;

The green belt is arranged below the bridge body 1, and the green belt includes a horizontally arranged tank body 3, a substrate 4 filled in the tank body 3, and shrubs 5 planted on the substrate 4;

The rainwater treatment system includes a downspout 6, a sedimentation tank 7, an inlet pipe 8 and a drain pipe 9;

The sedimentation tank 7 is buried in the side of the tank body 3, and the bottom of the sedimentation tank 7 is lower than the bottom of the tank body 3; the sedimentation tank 7 is communicated with the tank body 3 through the water inlet pipe 8, and the end of the water inlet pipe 8 is located the upper side of the body 3;

The beginning of the drain pipe 9 is connected to the side of the tank body 3 opposite to where the sedimentation tank 7 is located, and the end of the drain pipe 9 is connected to the municipal pipe network.

The beginning of the downpipe 6 is connected to the rain drain, and the end of the downpipe 6 is connected to the sedimentation tank 7 .

The beneficial effects of the above-mentioned viaduct rainwater treatment system are: in the viaduct rainwater treatment system related to the utility model, by setting the downspout 6, the rainwater on the bridge surface of the viaduct is diverted to the sedimentation tank 7, and the rainwater doped in the rainwater is drained by the sedimentation tank 7. Sediment and other dirt are preliminarily settled, and then the preliminarily settled rainwater is introduced into the substrate 4 layer of the green belt through the water inlet pipe 8, thereby realizing automatic irrigation of the green belt under the viaduct and saving labor costs for irrigation of the green belt under the bridge And water cost, because rainwater is a natural water source, compared with tap water, it is not easy to cause soil compaction, which is conducive to the healthy growth of plants, and the outlet pipe is connected to the lower part of the other side of the green belt, so that the tank body 3 forms an artificial wetland with horizontal underflow. It is beneficial for rainwater to evenly flow through the entire 4 layers of the matrix, and the excess water is discharged to the municipal pipe network through the outlet pipe. Since the rainwater is purified by the sedimentation tank 7, it will not cause rainwater runoff pollution.

Further, in the viaduct rainwater treatment system, the tank body 3 includes an upper layer and a lower layer, the upper layer is filled with matrix 4 , the lower layer is filled with gravel 10 , and the upper layer and lower layer are separated by a geotextile 11 .

In the process of rainwater irrigating the green belt, the rainwater first flows through the upper layer 4 of the matrix, and the excess rainwater seeps through the geotextile 11 to the lower layer of gravel 10, which is conducive to the discharge of excess rainwater and effectively avoids the accumulation of water in the matrix 4 layers. 10 layers of gravel can also play a certain role in water purification, thereby further reducing the runoff pollution of rainwater.

Further, in the above viaduct rainwater treatment system, the downpipe 6 includes a downwater main pipe 61 and a plurality of downwater pipes 62, the beginning of the downwater main pipe 61 is connected to the rain drain, and the end of the downwater main pipe 61 is located in the sedimentation tank 7, The starting end of the downwater pipe 62 is connected to the end of the downwater main pipe 61 , and the end of the downwater pipe 62 is located at the bottom of the sedimentation tank 7 .

The rainwater falls from a high place through the downpipe 6, and the impulsive force is relatively large. By setting a plurality of downpipes 62 in the sedimentation tank 7, the rainwater is diverted, thereby buffering the falling of the rainwater, reducing the flow velocity of the rainwater, and avoiding high-speed water flow. The dirt deposited at the bottom of the settling tank 7 affects the sedimentation effect.

Further, in the above viaduct rainwater treatment system, the beginning end of the drainage pipe 9 is provided with a filter screen.

A strainer is arranged at the beginning of the drainpipe 9 to further purify the discharged rainwater and further reduce the runoff pollution of the rainwater.

Further, in the above viaduct rainwater treatment system, the bottom of the sedimentation tank 7 is filled with pebbles.

By filling the bottom of the sedimentation tank 7 with pebbles, the rainwater falling in the downpipe 6 can be further buffered, and the sedimented dirt can be avoided from being washed up to cause secondary pollution, thereby further reducing the runoff pollution of the rainwater.

Example 1

A viaduct rainwater treatment system includes a viaduct body, a green belt and a rainwater treatment system; the viaduct body includes a bridge body 1 and a pier column 2; the pier column 2 is connected to the lower part of the bridge body 1, and the bridge body 1 corresponds to a pier The position of the column 2 is provided with a rain leak; the green belt is arranged below the bridge body 1, and the green belt includes a horizontally arranged tank body 3, a substrate 4 filled in the tank body 3 and a shrub 5 planted on the substrate 4; The rainwater treatment system includes a downpipe 6, a sedimentation tank 7, an inlet pipe 8 and a drain pipe 9; the sedimentation tank 7 is embedded in the side of the tank body 3, and the bottom of the sedimentation tank 7 is lower than the bottom of the tank body 3; The sedimentation tank 7 communicates with the tank body 3 through the water inlet pipe 8, and the end of the water inlet pipe 8 is located at the upper side of the tank body 3; , the end of the drain pipe 9 is connected to the municipal pipe network. The beginning of the downpipe 6 is connected to the rain drain, and the end of the downpipe 6 is connected to the sedimentation tank 7 . The tank body 3 includes an upper layer and a lower layer, the upper layer is filled with a matrix 4 , the lower layer is filled with gravel 10 , and the upper layer and the lower layer are separated by a geotextile 11 . The downspout 6 includes a downwater main pipe 61 and a plurality of downwater pipes 62, the beginning of the downwater main pipe 61 is connected to the rain drain, the end of the downwater main pipe 61 is located in the sedimentation tank 7, and the beginning of the downwater pipe 62 is connected to the downwater The end of the main pipe 61 and the end of the downwater pipe 62 are located at the bottom of the sedimentation tank 7 . The starting end of the drain pipe 9 is provided with a strainer. The bottom of the sedimentation tank 7 is filled with pebbles.

To sum up, in the viaduct rainwater treatment system provided by the utility model, the rainwater on the bridge surface of the viaduct is diverted to the sedimentation tank by setting the downpipe, and the silt and other dirt mixed in the rainwater are preliminarily precipitated through the sedimentation tank , and then introduce the preliminarily precipitated rainwater into the substrate layer of the green belt through the water inlet pipe, thereby realizing the automatic irrigation of the green belt under the viaduct, saving the labor cost and water cost of irrigation of the green belt under the bridge, because rainwater is a natural water source, Compared with tap water, it is not easy to cause soil compaction, which is conducive to the healthy growth of plants, and the outlet pipe is connected to the lower part of the other side of the green belt, so that the tank forms an artificial wetland with horizontal underflow, which is conducive to the uniform flow of rainwater through the entire substrate layer. The excess water is discharged to the municipal pipe network through the outlet pipe. Since the rainwater is purified by the sedimentation tank, it will not cause rainwater runoff pollution. In the process of rainwater irrigating the green belt, the rainwater first flows through the upper matrix layer, and the excess rainwater seeps through the geotextile to the lower gravel layer, which is conducive to the discharge of excess rainwater and effectively avoids plant root rot caused by water accumulation in the matrix layer The gravel layer can also play a certain role in water purification, thereby further reducing the runoff pollution of rainwater. By setting multiple downpipes in the sedimentation tank, the rainwater is diverted, thereby buffering the falling of the rainwater, reducing the flow rate of the rainwater, and avoiding the high-speed water flow from washing up the dirt deposited at the bottom of the sedimentation tank and affecting the sedimentation effect.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent transformations made by using the utility model specification and accompanying drawings, or directly or indirectly used in related technical fields, are all the same. The theory is included in the patent protection scope of the present utility model.

Claims (5)

1. A viaduct rainwater treatment system is characterized in that, comprising viaduct body, green belt and rainwater treatment system; The viaduct body includes a bridge body and a pier column; the pier column is connected to the lower part of the bridge body, and the position of the bridge body corresponding to the pier column is provided with a rain leak; The green belt is arranged under the bridge body, and the green belt includes a horizontally arranged tank body, a substrate filled in the tank body and shrubs planted on the substrate; The rainwater treatment system includes a downpipe, a sedimentation tank, a water inlet pipe and a drain pipe; The sedimentation tank is buried in the side of the tank body, and the bottom of the sedimentation tank is lower than the bottom of the tank body; the sedimentation tank is connected with the tank body through a water inlet pipe, and the end of the water inlet pipe is located at the upper side of the tank body; The beginning of the drainage pipe is connected to the side of the tank body on the side opposite to the location of the sedimentation tank, and the end of the drainage pipe is connected to the municipal pipe network; The beginning of the downpipe is connected to the rain drain, and the end of the downpipe is connected to the sedimentation tank. 2. The viaduct rainwater treatment system according to claim 1, wherein the tank body comprises an upper layer and a lower layer, the upper layer is filled with matrix, and the lower layer is filled with gravel, and the upper layer and the lower layer are separated by a geotextile . 3. The viaduct rainwater treatment system according to claim 1, wherein the downpipe comprises a main pipe for falling water and a plurality of water pipes for falling, the beginning of the main pipe for falling water is connected to the rain drain, and the end of the main pipe for falling water is located in the sedimentation tank , the beginning of the downspout pipe is connected to the end of the downwater main pipe, and the end of the downspout pipe is located at the bottom of the sedimentation tank. 4. The viaduct rainwater treatment system according to claim 1, characterized in that a strainer is provided at the beginning of the drainpipe. 5. The viaduct rainwater treatment system according to claim 1, wherein the bottom of the sedimentation tank is filled with pebbles.