CN207244782U - A kind of rainwater cyclic utilization system for mountain area sponge urban construction - Google Patents

Abstract

The utility model provides a rainwater recycling system for the construction of sponge cities in mountainous areas, which includes a water seepage system, a water stagnation system, a water storage tank, a purification system and an irrigation system connected through a drainage system, wherein the water seepage system and the water stagnation system collect rainwater The rainwater in the reservoir is discharged into the landscape pool and irrigation system for recycling after passing through the purification system; the seepage system includes permeable water pavement and permeable water square; the stagnant water system includes man-made stagnant wetlands; The purification system includes a sedimentation tank, a biological purification tank, and a purification water tank connected in sequence. The construction of sponge cities in mountainous areas has the advantages of large undulations and height differences. Excessive rainwater is collected through reservoirs and used in urban construction to realize the concept of green buildings. It absorbs water in rainy days, uses low peak flow, and releases water in dry days. It avoids the current situation of single rainwater discharge in the original urban construction, and comprehensively utilizes rainwater resources, effectively reducing the impact of urban flood disasters.

Description

A rainwater recycling system for the construction of sponge cities in mountainous areas

technical field

The utility model relates to the technical field of sponge city construction, in particular to a rainwater recycling system used for the construction of sponge cities in mountainous areas.

Background technique

With the rapid development of urbanization, a series of problems such as urban heat island effect, shortage of water resources, increase of impermeable ground, decline of groundwater level, destruction of water ecosystem, and frequent occurrence of urban waterlogging disasters have been brought about. According to statistics, 234 cities above the county level in my country have suffered floods. In the face of increasingly prominent urban flood disasters, the construction of sponge cities is imperative.

Sponge city refers to a city that can absorb, store and release water like a sponge, and comprehensively adopt measures such as infiltration, stagnation, storage, purification, use and drainage to maintain the original water ecology and reduce the hazards of rain and flood disasters. At present, The country and localities have launched a number of sponge city pilot projects. However, my country has a vast territory and different topography and landforms in different regions. There is no unified model for various measures for sponge cities. Only comprehensive measures for sponge cities can be adopted according to local conditions. The construction of sponge cities in mountainous areas has its own characteristics. Therefore, it is necessary to develop a sponge city construction method that is suitable for mountainous areas and integrates seepage and stagnation, especially for rainwater recycling systems. Collect and utilize rainwater to build a rainwater circulation system to protect slopes in mountainous areas, prevent natural disasters such as mudslides, and also contribute to urban drainage.

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides a rainwater recycling system for the construction of sponge cities in mountainous areas, which solves the problem that the existing rainwater discharge is single, and the rainwater is abundant in mountainous areas, and there is no construction for the unique geographical advantages of mountainous areas. Problems with systems that recycle rainwater.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a rainwater recycling system for the construction of a mountainous sponge city, including a water seepage system connected through a drainage system, a stagnant water system, a water storage tank, a purification system and an irrigation system. System, in which the seepage system and stagnant system collect rainwater and transport it to the storage tank, and the rainwater in the storage tank is discharged into the landscape pool and irrigation system for recycling after passing through the purification system;

The water seepage system includes a water seepage pavement and a water seepage plaza;

The stagnant water system comprises a man-made stagnant wetland;

The purification system includes a sedimentation tank, a biological purification tank and a water purification tank connected in sequence.

When realizing the construction of rainwater recycling in mountainous areas, the difference in height and terrain in mountainous areas can be used to collect and reuse rainwater. A recycling system can be built in the area near the slope, seepage system, stagnant water system, reservoir, purification system, irrigation system, among which the reservoir is used to collect excess rainwater from the seepage system and stagnant system, and Storage, and then the rainwater in the storage tank is transported to the evolution system for rainwater evolution as required, and then the purified rainwater is transported to the landscape pool for use, and the rainwater in the storage tank can also be directly discharged into the irrigation system , for plant watering. In this way, the excess rainwater on the slope can be collected and used for urban construction water use. On the one hand, the slope area is protected, and disasters such as landslides and mudslides are effectively avoided. On the other hand, the excess rainwater is also used to build urban landscapes , not only saves energy, but also protects the urban environment.

Compared with the prior art, the utility model has the following beneficial effects:

1. The construction of sponge cities in mountainous areas has the advantages of large ground undulations, height differences, and good drainage advantages. However, the landforms of mountainous areas are prone to geological disasters such as landslides and mudslides. By setting up rainwater circulation systems in mountainous slope areas, excessive Rainwater is collected through the reservoir and used in urban construction to realize the concept of green building. It absorbs water in rainy days, releases water with low peak flow and releases water in dry days, avoiding the current situation of single rainwater discharge in the original urban construction. , and the comprehensive utilization of rainwater resources effectively reduces the impact of urban flood disasters;

2. Taking advantage of the mountainous terrain, the circulatory system can be built into an artesian reservoir and stagnant water system, which saves energy and is also conducive to environmental purification.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is the local schematic diagram of sponge city construction in mountainous area of the utility model;

Fig. 3 is the schematic cross-sectional view of the utility model permeable water pavement;

Fig. 4 is a schematic cross-sectional view of the sinking wetland of the present invention;

Fig. 5 is a schematic layout diagram of the water purification system of the present invention.

In the figure, permeable water pavement 1, lawn 10, road main body 11, permeable water layer 111, impermeable layer 112, reservoir 2, purification system 3, sedimentation tank 31, biological purification tank 32, purified water pool 33, permeable water square 4. Sunken wetland 5, sunken grassland 51, collection and drainage pond 52, green stagnant roof 6, seepage pipeline 7, drainage pipe 8, and side slope 200.

Detailed ways

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

As shown in Figures 1 to 5, a rainwater recycling system for the construction of a mountainous sponge city according to the utility model includes a seepage system connected through a drainage system, a reservoir 2, a stagnant water system, and a purification system 3 And the irrigation system, wherein the drainage system is mainly composed of a plurality of seepage pipelines 7, drainage pipelines 8 and artificial drainage grooves connected to each other. Due to the terrain height difference in mountainous areas, too much rainwater will flow down automatically near the mountain slope 200. If the rainwater is not drained quickly, it will cause the accumulation of rainwater on the slope 200, causing landslides and other natural disasters. A seepage system is built near the slope 200 to quickly infiltrate rainwater. The seepage system includes the seepage road surface 1 and the seepage square 4 built on the side slope 200, wherein the seepage road surface 1 includes the road main body 11 and the road main body The lawn 10 on both sides of 11 is provided with a drainage ditch between the main body of the road 11 and the lawn 10, and the main body of the road 11 includes an impermeable layer 112 and a water-permeable layer 111 laid sequentially from bottom to top. There is a rainwater collection pipeline connected with the drainage groove. When the rainwater enters the impermeable layer 112 through the permeable water layer 111, it directly flows into the drainage groove. On the one hand, the foundation is protected to avoid excessive rainwater damage to the foundation. Also buried below the impermeable layer 112 is a seepage pipeline 7 for collecting rainwater in the soil. When the rainwater in the soil exceeds the adsorption force of the soil, it flows out through the seepage holes on the seepage pipeline 7. Because the seepage pipeline 7 and the drainage The pipeline 8 is connected so as to transport the rainwater in the drainage ditch and the seepage pipeline 7 to the storage tank 2 for storage. Similarly, the permeable water plaza 4 includes an impermeable layer 112 and a permeable layer 111 laid sequentially from bottom to top, and a seepage pipeline 7 for collecting rainwater in the soil is also buried below the impermeable layer 112, and the seepage pipeline 7 is the same The rainwater is conveyed into the cistern 2 via the drain line 8 . Ordinary squares can only infiltrate rainwater into the soil below the ground without considering the limited moisture absorption capacity of the soil. Excessive water will easily cause building sags and collapses, and water will accumulate on the road surface, which will easily cause traffic paralysis. Excess water can be collected through the seepage pipeline 7, and the original content in the soil will not be broken. On the one hand, the soil is protected in a natural humidity state, and the road will not be flooded due to too much rain, which is not easy to walk on the other hand. On the one hand, the excess water is also recycled to improve the utilization rate of water resources.

Reservoir 2 can be built together with road, also can utilize existing reservoir, lake etc. to collect rainwater. The water in the reservoir 2 can be discharged in dry weather, and the rainwater vegetation and the lawn 10 can be used to maintain water and soil by the irrigation system. In this embodiment, a more important purpose is to build a landscape pool on one side as a stagnant water system according to the construction method of the permeable water pavement 1 or the permeable water square 4, so as to fully utilize the rainwater on the green building and make full use of it. water resources.

A purification system 3 is provided between the reservoir 2 and the stagnant water system to purify the water in the reservoir 2 to avoid water pollution in the stagnant system, which is not conducive to the survival of landscape plants. The purification system 3 includes The sedimentation tank 31, the biological purification tank 32, and the purified water tank 33 are connected in sequence. When the rainwater in the reservoir 2 enters the sedimentation tank 31 for preliminary precipitation, the sludge and the like are deposited, and the water after precipitation enters the biological purification tank 32 The water that is further purified into usable water is then collected in the purified water pool 33, and the purified water pool 33 is communicated with the stagnant water system to supply water to the stagnant water system. The stagnant water system includes artificial stagnant wetlands and green stagnant roofs 6, wherein the stagnant wetlands are sunken structures, including sunken grasslands 51 and collection and drainage pools 52 dug in the middle of the grasslands, buried under the sunken grasslands 51 There is a seepage pipeline 7 connected with the collection and drainage pool 52, and the seepage pipeline 7 is also connected with the drainage pipeline 8, and flows back into the reservoir 2, so as to ensure the activity of the water in the stagnant wetland without pollution, which is beneficial to Pedestrians watch. A sinking seepage tree pit can be set on the green stagnant water roof 6 for planting hydroponics, expanding the practical scope of purifying water, and making full use of the rainwater in the water storage tank 2 .

On rainy days, the rainwater is collected into the reservoir 2 through the permeable water pavement 1 and the permeable water square 4, and then the artificial landscape pool is provided with clean water through the purification system 3, and stagnant water wetlands and green stagnant roofs 6 are constructed to facilitate pedestrians to watch. The construction of green buildings is in line with the concept of environmental protection. In dry weather, vegetation and grassland can also be irrigated through the irrigation system. The entire rainwater circulation system collects rainwater and recycles it, fully collects rainwater in rainy days, prevents landslides caused by excessive rainwater on the slope 200, and also avoids rainwater deposition on the road surface, causing traffic inconvenience; making full use of rainwater can save water resources , to protect fresh water resources.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (6)

1. A rainwater recycling system for the construction of sponge cities in mountainous areas is characterized in that: comprise a seepage system connected by a drainage system, a reservoir (2), a purification system (3), a stagnant water system and an irrigation system, wherein The seepage system collects rainwater and transports it to the reservoir (2), and the rainwater in the reservoir (2) is discharged into the stagnant water system after passing through the purification system (3), or directly transported to the irrigation system for recycling; The water seepage system includes a water seepage pavement (1) and a water seepage plaza (4); The stagnant water system includes artificial stagnant wetlands and green stagnant roofs (6); The purification system (3) includes a sedimentation tank (31), a biological purification tank (32) and a water purification tank (33) connected in sequence. 2. A kind of rainwater recycling system for sponge city construction in mountainous areas according to claim 1, characterized in that: said drainage system mainly consists of a plurality of seepage pipelines (7), drainage pipelines (8) and artificial The drainage grooves are connected to each other. 3. A rainwater recycling system for the construction of a mountainous sponge city according to claim 2, characterized in that: the permeable water pavement (1) includes a road body (11) and two sides of the road body (11). The lawn (10), the road main body (11) and the lawn (10) are provided with a drainage ditch, and the road main body (11) includes an impermeable layer (112) laid in sequence from bottom to top, permeable water layer (111), wherein the impermeable layer (112) communicates with the drainage ditch, and a seepage pipeline (7) for collecting rainwater in the soil is buried under the impermeable layer (112). 4. A rainwater recycling system for the construction of a mountainous sponge city according to claim 2, characterized in that: the permeable water plaza (4) comprises an impermeable layer (112) laid sequentially from bottom to top and A permeable water layer (111), below which a seepage pipeline (7) for collecting rainwater in the soil is buried. 5. A kind of rainwater recycling system for sponge city construction in mountainous areas according to claim 2, characterized in that: said stagnant wetland comprises sunken grassland (51) and a collection and drainage pool dug in the middle of the grassland ( 52), the seepage pipeline (7) communicating with the collection and drainage pool (52) is buried under the sunken grassland (51). 6. A rainwater recycling system for the construction of a mountainous sponge city according to any one of claims 3 to 5, characterized in that: the seepage pipeline (7) is connected to the drainage pipeline (8), The drainage pipeline (8) is connected to the water storage tank (2).