Ecological purification drainage ditch structure suitable for water and soil conservation in high-pollution factory

Abstract

The utility model relates to the technical field of factory drainage systems, in particular to an ecological purification drainage ditch structure suitable for water and soil conservation of a high-pollution factory, which comprises three retaining walls distributed in a step shape, and a first filter area and a second filter area are respectively arranged on the inner sides of a first buffer area and a second buffer area. Drainage layers are arranged on the inner sides of the first buffer area and the second buffer area, surface runoff is collected in a centralized mode through the abrupt slope height difference, rainwater resources are purified by arranging the stepped ecological purification platform, and finally the rainwater resources are drained into the lower drainage ditch, so that the effects of drainage, purification and water and soil conservation of the plant rainwater runoff are achieved, the abrupt slope design is reasonable, and the height difference problem is solved; the problem that overland runoff is too fast due to the height difference is relieved, the problem that surface water in a factory is polluted or heavy metal exceeds the standard is greatly solved due to the ecological purification effect of the multi-layer greening buffer area on a water body, and the stepped retaining wall structure has the multi-layer protection effect on water and soil conservation.

Description

Technical Field

[0001] The utility model relates to the technical field of factory drainage systems, in particular to an ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas. Background Art

[0002] Steep slope drainage ditches are a kind of water and soil conservation measures to effectively drain the water on the steep slope and prevent the water from penetrating into the interior of the steep slope, thereby reducing the stability of the steep slope. Generally, the soil on the surface of the steep slope is excavated to form a trench to guide the accumulated water to the drainage system below the steep slope. When the steep slope soil is hard and the steep slope is high, a trench is usually dug on the surface of the steep slope, and then a drainage pipe is laid in the trench to guide the accumulated water to the drainage system below the steep slope; when the steep slope soil is loose and the steep slope is low, suitable vegetation will be planted on the surface of the steep slope to drain the water on the steep slope through root absorption and transpiration of the vegetation.

[0003] However, both traditional pipe drainage and vegetation drainage ditches quickly direct surface runoff to the municipal drainage system, causing excessive municipal drainage pressure and failing to effectively replenish groundwater sources. For polluted factory areas, if the heavy metal content in rainwater is high, it will further pollute downstream water resources. Summary of the invention

[0004] The purpose of the utility model is to provide an ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas, which has the characteristics of achieving drainage, purification and soil and water conservation of rainwater runoff in the factory area, alleviating the problem of excessive surface runoff caused by height difference, and avoiding surface water pollution or excessive heavy metals in the factory area.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ecological purification drainage ditch structure suitable for soil and water conservation in a highly polluted factory area, comprising a retaining wall, wherein three retaining walls are provided and are distributed in a stepped manner, wherein the three retaining walls constitute a first buffer zone and a second buffer zone, wherein the first buffer zone and the second buffer zone are respectively provided with a first filter zone and a second filter zone on their inner sides, wherein drainage layers are provided on the inner sides of the first buffer zone and the second buffer zone, wherein the two drainage layers are respectively located at the bottom ends of the first filter zone and the second filter zone, wherein a drainage ditch is provided on the outer wall of the retaining wall with the lowest height, wherein drainage pipes are provided inside the two drainage layers, wherein one end of the drainage pipes extends to the interior of the drainage ditch, and wherein the upper end surfaces of the first filter zone and the second filter zone are respectively planted with first purification vegetation and second purification vegetation;

[0006] A plurality of energy dissipation devices are installed inside the drainage ditch. The energy dissipation devices include two fixing seats fixed inside the drainage ditch. A rotating shaft is rotatably connected between the two fixing seats. A plurality of evenly distributed energy dissipation plates are fixedly connected to the outer wall of the rotating shaft.

[0007] In order to filter stones and large suspended particles, as a preferred ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas of the utility model, the first filter area and the second filter area are both composed of a mixture of soil and biological communities.

[0008] In order to facilitate water permeability, as a preferred ecological purification drainage ditch structure suitable for water and soil conservation in highly polluted factory areas of the utility model, the drainage layer is a sand and gravel layer.

[0009] In order to filter suspended sediment and nutrients, as a preferred ecological purification drainage ditch structure suitable for water and soil conservation in highly polluted factory areas of the utility model, the first purification vegetation is duckweed and duckweed, and the second purification vegetation is water plantain.

[0010] In order to accelerate the discharge of excess surface runoff into the lower buffer zone, as a preferred ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas, an overflow pipe is provided through the outer wall of the retaining wall located in the center.

[0011] In order to prevent debris from entering the drainage ditch, as a preferred ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas of the utility model, the upper end surface of the drainage ditch is provided with a cover plate, and the upper end surface of the cover plate is paved with a pebble layer.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model utilizes the height difference of steep slope to collect surface runoff in a centralized manner, purifies rainwater resources by setting up a stepped ecological purification platform, and finally discharges it into the lower drainage ditch, thereby achieving the functions of rainwater runoff drainage, purification and soil and water conservation in the factory area. The steep slope design reasonably solves the height difference problem and alleviates the problem of excessive surface runoff caused by the height difference. The ecological purification effect of the multi-layer greening buffer zone on the water body greatly solves the problem of surface water pollution or excessive heavy metals in the factory area. The stepped retaining wall structure plays a multi-layer protective role in soil and water conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a top view of the structure of the drainage ditch of the utility model.

[0016] In the figure: 1. retaining wall; 2. first buffer zone; 3. second buffer zone; 4. first filtration zone; 5. second filtration zone; 6. drainage layer; 7. drainage ditch; 8. drainage pipe; 9. first purification vegetation; 10. second purification vegetation; 11. overflow pipe; 12. fixed seat; 13. rotating shaft; 14. energy dissipation plate; 15. cover plate; 16. pebble layer. DETAILED DESCRIPTION

[0017] See also Figure 1 to Figure 2 , an ecological purification drainage ditch structure suitable for soil and water conservation in a highly polluted factory area, comprising a retaining wall 1, three retaining walls 1 are arranged and distributed in a stepped manner, the three retaining walls 1 constitute a first buffer zone 2 and a second buffer zone 3, the inner sides of the first buffer zone 2 and the second buffer zone 3 are respectively provided with a first filter zone 4 and a second filter zone 5, the inner sides of the first buffer zone 2 and the second buffer zone 3 are both provided with a drainage layer 6, the two drainage layers 6 are respectively located at the bottom ends of the first filter zone 4 and the second filter zone 5, a drainage ditch 7 is arranged on the outer wall of the retaining wall 1 with the lowest height, a drainage pipe 8 is arranged inside the two drainage layers 6, one end of the drainage pipe 8 extends to the inside of the drainage ditch 7, and the upper end surfaces of the first filter zone 4 and the second filter zone 5 are respectively planted with a first purification vegetation 9 and a second purification vegetation 10;

[0018] A plurality of energy dissipation devices are installed inside the drainage ditch 7. The energy dissipation devices include two fixing seats 12 fixed inside the drainage ditch 7. A rotating shaft 13 is rotatably connected between the two fixing seats 12. A plurality of evenly distributed energy dissipation plates 14 are fixedly connected to the outer wall of the rotating shaft 13.

[0019] In this embodiment: three retaining walls 1 are provided and distributed in a stepped manner, so that the height of the first buffer zone 2 is higher than that of the second buffer zone 3. The surface runoff first flows into the first buffer zone 2. The first filter zone 4 and the second filter zone 5 are both composed of a mixture of soil and biological communities, which is convenient for filtering stones and large suspended particles on the one hand, and for planting vegetation on the other hand. The first purification vegetation 9 is duckweed and duckweed, which purify rainwater and reduce heavy metal pollution in rainwater. Excess surface runoff is discharged into the second buffer zone 3 through the overflow pipe 11. The second purification vegetation 10 performs secondary sedimentation and purification on the collected rainwater to improve the purification effect. The rainwater purified and filtered by the first buffer zone 2 and the second buffer zone 3 enters the drainage layer 6, and then enters the drainage ditch 7 through the drainage pipe 8, thereby utilizing the height difference of the steep slope to centrally collect surface runoff, purify rainwater resources by setting a stepped ecological purification platform, and finally discharge it into the lower drainage ditch 7, realizing the drainage, purification and soil and water conservation of rainwater runoff in the factory area;

[0020] By arranging an energy dissipation device inside the drainage ditch 7, rainwater flows down the drainage ditch 7, and the water flow collides with multiple energy dissipation plates 14 and drives the multiple energy dissipation plates 14 to rotate. During the rotation process, the energy dissipation plates 14 cut the water flow, reducing the scouring energy of the water flow on the connection between the drainage ditch 7 and the roadbed ditch, thereby reducing soil erosion.

[0021] As a technical optimization solution of the utility model, the first filter area 4 and the second filter area 5 are both composed of a mixture of soil and biological communities.

[0022] In this embodiment: the first filter area 4 and the second filter area 5 are both composed of a mixture of soil and biological communities, which is convenient for filtering stones and large suspended particles on the one hand, and for planting vegetation on the other hand.

[0023] As a technical optimization solution of the present invention, the drainage layer 6 is a sand and gravel layer.

[0024] In this embodiment, the drainage layer 6 is a sand and gravel layer, which is easy to penetrate and allows rainwater to enter the drainage layer 6.

[0025] As a technical optimization solution of the utility model, the first purifying vegetation 9 is duckweed and hornwort, and the second purifying vegetation 10 is water plantain.

[0026] In this embodiment, the first purifying vegetation 9 is duckweed and hornwort, and the second purifying vegetation 10 is water plantain, which is convenient for purifying rainwater and reducing heavy metal pollution in rainwater.

[0027] As a technical optimization solution of the utility model, an overflow pipe 11 is provided through the outer wall of the retaining wall 1 located at the center.

[0028] In this embodiment, the redundant surface runoff is discharged into the second buffer zone 3 through the overflow pipe 11, so as to facilitate the secondary sedimentation and purification of the rainwater.

[0029] As a technical optimization solution of the utility model, a cover plate 15 is provided on the upper end surface of the drainage ditch 7 , and a pebble layer 16 is paved on the upper end surface of the cover plate 15 .

[0030] In this embodiment: the upper end surface of the cover plate 15 is paved with a pebble layer 16, which can filter large-volume impurities and dirt while allowing water to pass through.

[0031] Working principle: three retaining walls 1 are arranged in a stepped manner, so that the height of the first buffer zone 2 is higher than that of the second buffer zone 3. The surface runoff first flows into the first buffer zone 2. The first filter zone 4 and the second filter zone 5 are both composed of a mixture of soil and biological communities. On the one hand, it is convenient to filter stones and large suspended particles, and on the other hand, it is convenient to plant vegetation. The first purification vegetation 9 is duckweed and duckweed, which purifies rainwater and reduces heavy metal pollution in rainwater. Excess surface runoff is discharged into the second buffer zone 3 through the overflow pipe 11. The second purification vegetation 10 performs secondary sedimentation and purification on the collected rainwater to improve the purification effect. The rainwater purified and filtered by the first buffer zone 2 and the second buffer zone 3 enters the drainage layer 6, and then enters the drainage ditch 7 through the drainage pipe 8.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas, comprising a retaining wall (1), characterized in that: The retaining walls (1) are provided with three and are distributed in a stepped manner. The three retaining walls (1) constitute a first buffer zone (2) and a second buffer zone (3). The first buffer zone (2) and the second buffer zone (3) are provided with a first filter zone (4) and a second filter zone (5) on their inner sides respectively. The first buffer zone (2) and the second buffer zone (3) are provided with a drainage layer (6) on their inner sides respectively. The two drainage layers (6) are located at the bottom ends of the first filter zone (4) and the second filter zone (5) respectively. The outer wall of the retaining wall (1) with the lowest height is provided with a drainage ditch (7). The interiors of the two drainage layers (6) are provided with drainage pipes (8). One end of the drainage pipes (8) extends to the interior of the drainage ditch (7). The upper end surfaces of the first filter zone (4) and the second filter zone (5) are planted with a first purification vegetation (9) and a second purification vegetation (10) respectively. A plurality of energy dissipation devices are installed inside the drainage ditch (7), and the energy dissipation devices include two fixed seats (12) fixed inside the drainage ditch (7), a rotating shaft (13) is rotatably connected between the two fixed seats (12), and a plurality of evenly distributed energy dissipation plates (14) are fixedly connected to the outer wall of the rotating shaft (13).

2. According to claim 1, an ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas is characterized by: The first filter zone (4) and the second filter zone (5) are both composed of a mixture of soil and biological communities.

3. The ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas according to claim 1 is characterized by: The drainage layer (6) is a sand and gravel layer.

4. The ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas according to claim 1 is characterized by: The first purifying vegetation (9) is duckweed and hornwort, and the second purifying vegetation (10) is water plantain.

5. The ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas according to claim 1 is characterized by: An overflow pipe (11) is provided through the outer wall of the retaining wall (1) at the central position.

6. The ecological purification drainage ditch structure suitable for soil and water conservation in highly polluted factory areas according to claim 1 is characterized by: The upper end surface of the drainage ditch (7) is provided with a cover plate (15), and the upper end surface of the cover plate (15) is paved with a pebble layer (16).

Images