CN217460855U - Ecological tree pool system for intercepting rainwater surface runoff pollutants - Google Patents

Abstract

The utility model relates to an ecological tree pond system for intercepting rainwater surface runoff pollutants. There is a first pool wall between the two, and the bottom of the first pool wall is provided with a filter grid, which is connected to the reservoir and the interception pool; a second pool wall is arranged between the interception pool and the purification pool, and the second pool wall starts from the bottom. A plurality of overflow holes are arranged at the top, and the overflow holes communicate with the interception tank and the purification tank; the first tank wall is lower than the tank wall of the prefabricated ecological tree tank, and the second tank wall is lower than the first tank wall. The utility model makes the rainwater flow along a specific route through the subsurface flow structure, has good purification effect, can effectively intercept various pollutants, and belongs to the technical field of ecological tree ponds.

Description

An ecological tree pond system for intercepting rainwater surface runoff pollutants

technical field

The utility model relates to the technical field of ecological tree ponds, in particular to an ecological tree pond system for intercepting rainwater surface runoff pollutants.

Background technique

In recent years, with the rapid advancement of urbanization, large-scale hardening paving, the lagging problems of underground infrastructure construction have become increasingly prominent, and the contradiction between urban water environment pollution and people's needs for a happy life has become increasingly prominent. This leads to a series of outstanding problems in the city, such as the hardened pavement cannot penetrate the rainwater, which makes the rainwater collect on the ground, which greatly increases the waterlogging of the city; it also blocks the replenishment of the rainwater to the groundwater, making it difficult for the urban groundwater level to rise. It directly affects the health of vegetation, and also aggravates the pollution of water environment by pollutants carried by surface runoff.

At present, relevant patented technologies have been formed in the treatment of surface runoff pollution. For example, the Chinese patent with the patent number CN108951816A discloses the "ecological tree pond system and construction method". This technology can ensure that rainwater is collected during rainfall, and street tree cultivation will not occur. Soil erosion overcomes the drawbacks in the management of street tree cultivation. The Chinese patent with the patent number CN 107447808A discloses "rainwater collection and purification ecological tree pool", this technology can effectively solve the problems of rainwater collection, purification and storage. However, the above patents all have average rainwater purification effects, and lack the interception and removal of TN, TP and heavy metal elements in runoff pollutants, and cannot provide a simple and fast construction solution.

Utility model content

Aiming at the technical problems existing in the prior art, the purpose of the utility model is to provide an ecological tree pond system for intercepting rainwater surface runoff pollutants, which has good purification effect and can effectively intercept various pollutants.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

An ecological tree pond system for intercepting rainwater surface runoff pollutants, including a prefabricated ecological tree pond, wherein the prefabricated ecological tree pond is sequentially provided with a reservoir, an interception pond and a purification pond from the outside to the inside, and a third pond is arranged between the reservoir and the interception pond. A pool wall, the bottom of the first pool wall is provided with a filter grille, and the filter grille is connected to the reservoir and the interception pool; a second pool wall is arranged between the interception pool and the purification pool, and the second pool wall is provided from the bottom to the top. A plurality of overflow holes, the overflow holes are connected to the interception tank and the purification tank; the first tank wall is lower than the tank wall of the prefabricated ecological tree tank, and the second tank wall is lower than the first tank wall.

As a preference, the bottom of the prefabricated ecological tree pond is provided with a storage tank, the storage tank is located below the storage tank, the interception tank and the purification tank, and the purification tank is provided with a drain to communicate with the storage tank; The permeable membrane is provided with through holes, and the through holes are correspondingly arranged with the drainage outlet.

As a preferred option, the top of the purification tank is provided with a planting part, the planting part includes a plant planting area and a microorganism planting area, and the microorganism planting area is distributed around the plant planting area.

As a preference, the prefabricated ecological tree pond is prepared by using ecological concrete, and the prefabricated ecological tree pond has a cylindrical structure.

As a preference, the reservoir has an inverted triangular structure, the top of the reservoir is provided with intercepting nets, and the two edges of the intercepting nets are respectively connected to the pond wall of the prefabricated ecological tree pond and the top of the first pond wall.

As a preference, the interception tank has a cylindrical structure, the overflow holes are circular holes, and the overflow holes are evenly distributed on the wall of the second tank.

As a preference, the intercepting pond is provided with a gravel layer, a gravel layer and a pebble layer, and the gravel layer, the gravel layer and the pebble layer are sequentially distributed in the intercepting pond from bottom to top.

As a preference, the particle size of the gravel in the gravel layer is 20-30 mm, the particle size of the gravel in the gravel layer is 1 mm, and the particle size of the pebble in the pebble layer is 30-50 mm.

As a preference, the purification tank is provided with a pebble layer, a gravel layer and a crushed stone layer, and the pebble layer, the gravel layer and the crushed stone layer are sequentially distributed in the purification tank from bottom to top.

As a preference, the particle size of the pebble in the pebble layer is 30-50 mm, the particle size of the gravel in the gravel layer is 1 mm, and the particle size of the crushed stone in the crushed stone layer is 20-30 mm.

The principle of the utility model is as follows: it is suitable for sponge city construction and low-impact development and transformation of old communities, and can effectively intercept surface runoff pollutants, thereby achieving the concept and requirements of sponge city construction of "storage, purification, use, and discharge". Its devices include: prefabricated ecological tree ponds, storage ponds, interception ponds, filter ponds and water storage ponds. The prefabricated ecological tree pond is prefabricated by ecological concrete, which can be quickly installed and used in construction, effectively solving the problem of rainwater infiltration into the ground. Among them, the interception pond and the filter pond are the filtration systems in the ecological tree pond system. They are subsurface flow. The pollutant interception matrix is constructed through the selection of filler materials and the combination of different particle sizes, which can increase the flow path of runoff and play a role in intercepting pollutants. role, especially TN, TP, ammonia nitrogen and heavy metal pollutants. At the same time, the overflow port and the drain hole are set to achieve the purpose of fast drainage. Among them, the storage tank can effectively collect rainwater to achieve the purpose of rapid drainage, and the storage tank can realize the purpose of rainwater reuse.

In general, the utility model has the following advantages:

1. The utility model has a good purification effect and can effectively intercept surface runoff pollutants, thereby achieving the concept and requirements of sponge city construction of "storage, purification, use, and drainage". Solve the surface runoff pollution, intercept the runoff pollution from entering the rainwater pipeline, put the prefabricated ecological tree pond into the treated foundation pit, add the filler in the filter system in turn, and then plant the shrubs. The ecological tree pond is prefabricated by ecological concrete, which can effectively speed up the on-site installation and construction progress. The integrated ecological tree pond also reduces the leakage of rainwater during rainfall. By designing a subsurface filter structure, a pollutant intercepting matrix is constructed through the selection of filler materials and the combination of different particle sizes, which increases the runoff flow path and plays a role in intercepting pollutants.

2. The utility model is prefabricated with ecological concrete, which is easy to construct and can be installed and used quickly. At the same time, the overall prefabrication can effectively reduce the structural construction joints and reduce the problem of runoff leakage.

3. The filter system in the present invention adopts the subsurface flow, which can increase the running path of the runoff. At the same time, filling with different particle size fillers serves the purpose of intercepting runoff pollutants.

4. The purification tank in the utility model provides space for the growth of plants and microorganisms, and can effectively purify pollutants such as TN, TP, and heavy metals in the runoff pollutants.

5. The water storage tank in the utility model can store rainwater when the rainfall is large, and achieve the purpose of rainwater reuse later.

Description of drawings

Figure 1 is a schematic diagram of an ecological tree pond system for intercepting rainwater surface runoff pollutants.

Figure 2 is a top view of an ecological tree pond system for intercepting rainwater surface runoff pollutants.

Figure 3 is a schematic diagram of a reservoir.

Figure 4 is a schematic diagram of an interception pool.

Figure 5. Schematic diagram of the purification tank.

Among them, 1 is the prefabricated ecological tree pond, 2 is the storage pond, 3 is the interception pond, 4 is the purification pond, 5 is the storage pond, 6 is the planting department, 7 is the shrub, 8 is the filter grid, and 9 is the intercepting net. 10 is the overflow hole, 11 is the drain, 12 is the first pool wall, 13 is the second pool wall, 14 is the gravel layer, 15 is the pebble layer, 16 is the gravel layer, and 17 is the permeable membrane.

Detailed ways

The present utility model will be described in further detail below with reference to the specific embodiments.

An ecological tree pond system for intercepting rainwater surface runoff pollutants, including a prefabricated ecological tree pond, wherein the prefabricated ecological tree pond is sequentially provided with a reservoir, an interception pond and a purification pond from the outside to the inside, and a third pond is arranged between the reservoir and the interception pond. A pool wall, the bottom of the first pool wall is provided with a filter grille, and the filter grille is connected to the reservoir and the interception pool; a second pool wall is arranged between the interception pool and the purification pool, and the second pool wall is provided from the bottom to the top. A plurality of overflow holes, the overflow holes are connected to the interception tank and the purification tank; the first tank wall is lower than the tank wall of the prefabricated ecological tree tank, and the second tank wall is lower than the first tank wall.

The reservoir, interception pool and purification pool in this embodiment form a conical frustum with a trapezoidal section in the vertical direction. The area between the conical frustum and the prefabricated ecological tree pond is a water storage tank. The conical frustum is set upside down, and the larger diameter end is The top, the end with the smaller diameter is the bottom, which is flared.

The outer diameter of the prefabricated ecological tree pool in this embodiment is 1200mm, the height is 1000mm, and the wall thickness of the ecological concrete material is 30mm. The integration of prefabricated ecological tree pond, reservoir, interception pond and purification pond makes installation and construction more convenient. The overall prefabrication can effectively reduce structural construction joints and reduce the problem of runoff leakage.

There is a storage tank at the bottom of the prefabricated ecological tree pool. The storage tank is located below the storage tank, the interception pool and the purification pool. The purification pool is provided with a drain port to communicate with the storage tank; The holes, the through holes and the drainage ports are arranged correspondingly. The storage tank can store rainwater when the rainfall is heavy, and can also play the role of rainwater reuse when the dry season comes, so that the shrubs will not dry up. The 30μm permeable film effectively intercepts the root growth, and the diameter of the through holes is between 25-30mm, which is evenly distributed on the bottom plate of the purification tank 9 to achieve the purpose of rapid drainage.

The top of the purification tank is provided with a planting part, and the planting part includes a plant planting area and a microorganism planting area, and the microorganism planting area is distributed around the plant planting area. The plant planting area is where shrubs are planted. The filling of fillers and the planting of plants and microorganisms can effectively purify the pollutants in the runoff, especially the TN, TP, ammonia nitrogen and heavy metal pollutants in the surface.

The prefabricated ecological tree pond is made of ecological concrete, and the prefabricated ecological tree pond has a cylindrical structure. The installation and construction are convenient, and at the same time, the overall prefabrication can effectively reduce the structural construction joints and reduce the problem of runoff leakage.

The reservoir is in an inverted triangular structure, the top of the reservoir is provided with an intercepting net, and the two edges of the intercepting net are respectively connected with the pool wall of the prefabricated ecological tree pool and the top of the first pool wall. The vertical section of the reservoir is a triangular structure, and the slanted side walls are inclined from the top of the prefabricated ecological tree pond to the middle of the prefabricated ecological tree pond, and the direction is from the top to the bottom. The first pool wall is set up, and the other short side pool wall is composed of an intercepting net, which is set at the top to intercept larger pollutants; the bottom is provided with a filter grille to intercept smaller pollutants. The distance between the top of the pool wall of the prefabricated ecological tree pool and the top of the first pool wall is 300mm, and the overall height of the first pool wall is 600mm. Intercepting nets and filter grilles can effectively intercept large particles of pollutants such as branches and leaves. When the rainfall is heavy, the cistern can collect rainwater first to reduce the problem of ground water.

The interception tank has a cylindrical structure, the overflow holes are circular holes, and the overflow holes are evenly distributed on the wall of the second tank. When the rainfall runoff is small, it flows into the purification tank through the overflow hole of the interception tank to achieve the purpose of pollutant purification. The interception pool 8 is 100mm wide and 550mm high.

The interception pond is provided with a gravel layer, a gravel layer and a pebble layer, and the gravel layer, the gravel layer and the pebble layer are sequentially distributed in the interception pond from bottom to top.

The particle size of the gravel in the gravel layer is 20-30mm, the particle size of the gravel in the gravel layer is 1mm, and the particle size of the pebble in the pebble layer is 30-50mm.

The purification tank is provided with a pebble layer, a gravel layer and a crushed stone layer, and the pebble layer, the gravel layer and the crushed stone layer are sequentially distributed in the purification tank from bottom to top. The diameter of the bottom of the purification pool is 400mm and the height is 550mm.

The particle size of the pebble in the pebble layer is 30-50 mm, the particle size of the gravel in the gravel layer is 1 mm, and the particle size of the crushed stone in the crushed stone layer is 20-30 mm.

Through the selection of packing materials for purification ponds and interception ponds, and the combination of different particle sizes, a pollutant interception matrix is constructed to increase the runoff flow path and play a role in intercepting pollutants, thereby reducing the problem of urban surface runoff pollution.

The implementation process is:

Step 1: According to the construction site conditions and the size requirements of this ecosystem, do a good job of measuring and laying out lines and excavating foundation pits.

Step 2: Prepare the bottom of the foundation pit, fill with 100-150mm gravel and compact it, or lay a layer of 50mm thick plain concrete;

Step 3: Accurately hoist the prefabricated ecological tree pond into the treated foundation pit for stable installation, and prevent the reserved holes from being blocked;

Step 4: After the prefabricated ecological tree pond is installed and stabilized, do a good job of backfilling the surrounding foundation pit soil, backfilling in layers, and compacting in layers.

Step 5: Install the intercepting net on the upper part of the reservoir, hoist the intercepting net that has been prepared and suitable for the size of the ecological tree pond to the exact position, install and fix it. The interception net can effectively intercept the large volume of pollutants in the runoff.

Step 6: There is a filter grille at the bottom of the outer side of the interception pond, which is connected to the reservoir, which can effectively intercept small-volume runoff pollutants; the inner side is provided with an overflow port with a diameter of 25mm, which is evenly distributed on the inside of the interception pond, which can be used during rainfall. When the runoff is small, it flows into the purification tank through the overflow port of the interception tank to achieve the purpose of pollutant purification.

Step 7: Screen pebbles, gravel and crushed stones of different particle sizes as fillers in the interception tank, which are crushed stone, gravel and pebbles in order from bottom to top. Layered filling, the bottom layer is filled with gravel with a particle size of 20-30mm, with a height of 100mm, and compacted; the middle layer is filled with gravel with a particle size of 1mm, with a height of 150mm, and compacted; the upper layer is filled with pebbles with a particle size of 30-50mm , the height is 200mm, and rammed.

Step 8: There is a 30μm permeable film on the bottom of the purification tank, which can effectively intercept root growth and effectively drain water; the bottom of the purification tank is also provided with a drainage port, the diameter of which is between 2.5-3cm, and is evenly distributed in the purification tank. On the bottom of the pool, to achieve the purpose of rapid drainage.

Step 9: The purification pool is composed of pebble, gravel and crushed stone from bottom to top through the selection of different filler materials and the combination of different particle sizes. The bottom layer is filled with pebbles with a particle size of 30-50mm, with a height of 200mm, and compacted; the middle layer is filled with gravel with a particle size of 1mm, with a height of 150mm, and compacted; the upper layer is filled with gravel with a particle size of 20-30mm and a height of 100mm , and compacted.

Step 10: During the filling process of the gravel layer in the purification pond, measure and set out the line, hang the shrub to the exact position and plant it. At the same time, in the process of backfilling the gravel, the microbial inoculum was added in layers, each layer was added with 100g, a total of 5 layers were added, and finally the gravel was filled and compacted.

Step 11: Conserve the shrubs and microorganisms. Sprinkle water every other day for the first week, and after a week, spray water every 2-3 days until the shrub survives.

The above-mentioned embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, and substitutions made without departing from the spirit and principle of the present utility model , combination and simplification, all should be equivalent replacement methods, which are all included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an ecological tree pond system of interception rainwater surface runoff pollutant which characterized in that: the ecological tree pool comprises a prefabricated ecological tree pool, wherein a water storage pool, an interception pool and a purification pool are sequentially arranged in the prefabricated ecological tree pool from outside to inside, a first pool wall is arranged between the water storage pool and the interception pool, and a filter grid is arranged at the bottom of the first pool wall and communicated with the water storage pool and the interception pool; a second tank wall is arranged between the interception tank and the purification tank, a plurality of overflow holes are formed in the second tank wall from the bottom to the top, and the overflow holes are communicated with the interception tank and the purification tank; the first pool wall is lower than the pool wall of the prefabricated ecological tree pool, and the second pool wall is lower than the first pool wall.

2. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, wherein: the bottom of the prefabricated ecological tree pool is provided with a water storage pool, the water storage pool is positioned below the water storage pool, the interception pool and the purification pool, and the purification pool is provided with a water outlet communicated with the water storage pool; a water permeable film is arranged above the water outlet and provided with a through hole, and the through hole is arranged corresponding to the water outlet.

3. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, wherein: the top of the purification tank is provided with a planting part, the planting part comprises a plant planting area and a microorganism planting area, and the microorganism planting area is distributed around the plant planting area.

4. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, wherein: the prefabricated ecological tree pool is prepared from ecological concrete and is of a cylindrical structure.

5. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, wherein: the cistern is the structure of falling triangle, and the top of cistern is equipped with the interception net, and the both ends border of interception net is connected with the pool wall in prefabricated ecological tree pond and the top of first pool wall respectively.

6. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, wherein: the interception pond is cylindrical structure, and the overflow hole is the circular port, and overflow hole evenly distributed is on the second pool wall.

7. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 6, wherein: the interception pool is provided with a gravel layer, a gravel layer and a pebble layer, and the gravel layer, the gravel layer and the pebble layer are sequentially distributed from bottom to top in the interception pool.

8. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 7, wherein: the particle size of the crushed stone in the crushed stone layer is 20-30mm, the particle size of the gravel in the gravel layer is 1mm, and the particle size of the pebble in the pebble layer is 30-50 mm.

9. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 1, is characterized in that: the purification tank is provided with a pebble layer, a sand-gravel layer and a gravel layer, and the pebble layer, the sand-gravel layer and the gravel layer are sequentially distributed in the purification tank from bottom to top.

10. The ecological tree pool system for intercepting rainwater surface runoff pollutants as claimed in claim 9, wherein: the particle size of pebbles in the pebble layer is 30-50mm, the particle size of gravel in the gravel layer is 1mm, and the particle size of broken stone in the gravel layer is 20-30 mm.

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