Environment-friendly waste slag field capable of treating construction drainage

Abstract

The utility model relates to the technical field of construction drainage treatment, in particular to an environment-friendly waste slag yard capable of treating construction drainage, which comprises a steel wire gabion, a waste slag yard, a slag retaining wall, a drainage ditch, a water pumping and spraying assembly and a plurality of nutrient soil grooves. The steel wire gabions are arranged at the bottom of the channel center of the hillside channel and are stacked from bottom to top to form a retaining wall; the waste slag field is arranged on the side, close to the mountain, of the stream ditch side slope channel; the slag blocking wall is arranged at the slope toe of the waste slag field; the nutrient soil grooves are all located in the horizontal planes of all levels of steel wire gabions of the gabion retaining wall of the waste slag yard. The drainage ditch extends to the sedimentation tank from the slope toe of the waste slag field; the water pumping and spraying assembly comprises a sewage submersible pump, the sewage submersible pump is communicated with a centrifugal pump, the centrifugal pump is communicated with a water conveying pipeline, and the water conveying pipeline is communicated with a spraying unit. According to the utility model, the construction drainage treatment can be enhanced, additional construction drainage purification facilities are reduced, one object has two purposes, and the construction cost of drainage treatment facilities is reduced on the premise of meeting the environmental protection requirement.

Description

Technical Field

[0001] This utility model relates to the field of construction drainage treatment technology, specifically to an environmentally friendly waste disposal site that can treat construction drainage. Background Technology

[0002] Pumped-storage power stations are mostly built in mountainous areas with significant elevation differences and rugged terrain. Construction involves extensive tunnel excavation, resulting in large volumes of excavated material. The difficulty in balancing excavation and filling leads to permanent waste disposal sites. However, in deep mountainous areas, there is little available land along roadsides and near projects. Construction areas often consist of basic farmland, agricultural land, and even protected forests and water source areas, making suitable land for waste disposal limited. Furthermore, constraints on transport distance, earthwork allocation, and transportation conditions limit the selection of suitable sites to valleys along nearby streams. Additionally, tunnel blasting easily generates turbid water containing solid particles. Constructing separate drainage systems would further increase the project's land area and cost, and would not fully utilize the unique characteristics of the waste disposal sites, such as hillsides and gullies, resulting in resource waste.

[0003] In summary, this utility model proposes an environmentally friendly waste disposal site that can treat construction wastewater. While strengthening the treatment of construction wastewater, it reduces the need for additional construction wastewater purification facilities, thereby lowering the cost of wastewater treatment facilities while meeting environmental protection requirements. Utility Model Content

[0004] To address the aforementioned issues, this invention provides an environmentally friendly waste disposal site capable of handling construction wastewater. By enhancing construction wastewater treatment, it reduces the need for additional construction wastewater purification facilities, thereby lowering the cost of wastewater treatment facilities while meeting environmental protection requirements.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: An environmentally friendly waste disposal site that can handle construction drainage includes a hillside and a stream set along the hillside. A waste disposal site is built along the slope of the hillside ditch on the side of the stream ditch. Several wire gabions (6) are provided at the bottom of the ditch core. A retaining wall (4) is provided at the foot of the waste disposal site, which is made up of several wire gabions (6) stacked from bottom to top in an arithmetic sequence. Nutrient soil troughs (3) are continuously set on the horizontal surface of each level of wire gabion (6) of the retaining wall (4). A sedimentation tank (8) is provided on the side of the retaining wall (4) away from the waste disposal site. A drainage ditch (7) extending from the foot of the waste disposal site to the sedimentation tank (8) is provided on the lower side of the retaining wall (4).

[0006] It also includes a water pumping and spraying assembly (2), which includes a sewage submersible pump (9) installed in a sedimentation tank (8). The sewage submersible pump (9) is connected to a water conveyance pipe (1). The water conveyance pipe (1) is laid from the sedimentation tank (8) to the top of the spoil disposal site. A centrifugal pump (10) is installed on one side of the sedimentation tank (8) at the foot of the spoil disposal site. The centrifugal pump (10) and the sewage submersible pump (9) are connected through the water conveyance pipe (1). The water conveyance pipe (1) is connected to several spraying units located on the surface of the spoil disposal site, along the construction road, and at the construction camp.

[0007] The technical principles of the above scheme are as follows: Utilizing the natural topography of the hillside gully, the spoil heap is located on the mountainside and stacked along the slope of the gully. This utilizes the terrain to reduce the cost of manual leveling and aids drainage through the natural slope. Gabions are placed at the bottom of the gully to stabilize the bottom and prevent erosion by water flow, while also serving as the foundation for the retaining wall, enhancing structural stability. The retaining wall formed by stacked gabions effectively prevents spoil from sliding down, protecting the downstream environment and safety. Drainage ditches guide water flow around the spoil heap slope, preventing direct erosion and reducing soil erosion and environmental pollution. Sedimentation tanks collect and treat the water flowing from the drainage ditches, removing suspended solids and particulate matter through natural sedimentation, improving effluent quality. Submersible sewage pumps extract water from the sedimentation tanks and transport it to the spray unit via centrifugal pumps and pipelines for spraying the spoil heap.

[0008] The above approach has the following beneficial effects:

[0009] 1. In this solution, compared with the prior art, the waste disposal site is located next to the construction road, which is convenient for waste disposal and reduces the transportation distance of waste disposal; there is no need to build a separate construction drainage purification system, as the waste disposal site itself is used as part of the filtration device, thereby saving investment.

[0010] 2. In this scheme, the design of gabions and retaining walls effectively intercepts and secures construction waste and debris, preventing them from flowing into surrounding water bodies or the environment, thus reducing damage to the natural environment. Simultaneously, the installation of nutrient soil troughs can restore and improve soil quality to a certain extent, promoting ecological restoration. The drainage ditch design can quickly collect and guide accumulated water in the spoil heap, preventing flooding. In particular, the drainage ditch extends from the toe of the spoil heap slope to the sedimentation tank, allowing water containing impurities and pollutants to be introduced into the sedimentation tank for treatment, reducing water pollution. The introduction of the pumping and spraying system enables the recycling of water resources. Through the action of submersible pumps and centrifugal pumps, the pre-treated water in the sedimentation tank is extracted and then transported through water pipelines to the spraying unit for spraying. This not only serves construction needs such as dust suppression and cooling but also further promotes water purification in the sedimentation tank.

[0011] 3. In this scheme, the water filtered by the slag yard is effectively connected to the drainage ditch. At the same time, the water supply pipeline, spraying device, slag yard, sewage submersible pump, centrifugal pump, sedimentation tank and the drainage ditch form an integrated construction drainage treatment system. The slag yard discharges the filtered water, ensuring that the slag yard itself is not eroded by the filtered drainage, avoiding its own structural instability, and improving the safety of the slope after the slag is disposed of. At the same time, the filtered water from the slag yard is collected in the sedimentation tank. After sedimentation, it is further pumped to the top of the slag yard by the sewage submersible pump for secondary filtration. After further filtration and purification, it becomes clean water that flows into the natural stream.

[0012] 4. This plan strengthens centralized waste disposal, effectively reducing the land area occupied by waste disposal sites. Simultaneously, it incorporates other ancillary facilities to utilize the waste disposal site's own properties for filtering and purifying construction wastewater, striving to achieve "less transport, zero waste, self-treatment, and multi-purpose use." Under the premise of design feasibility and proper protection, the waste disposal site itself is used as a large-scale filter to treat construction wastewater, fully integrating waste disposal with water treatment, reclamation, and greening. This maximizes the treatment of construction wastewater and the restoration of the ecology along the project route. After construction, climbing plants will be planted in nutrient soil troughs to reclaim and green the waste disposal site, achieving ecological restoration and truly realizing multi-purpose use, environmental cleanliness, and benefiting the people.

[0013] Furthermore, the bottom of the retaining wall is set on the excavated bedrock surface; each wire gabion at the bottom of the retaining wall is reinforced with steel bars in the center of its bottom surface.

[0014] Beneficial effects: Placing the bottom of the retaining wall on the excavated bedrock surface ensures a stable base support. Bedrock typically possesses high strength and stability, effectively resisting external loads and deformation. Inserting reinforcing bars at the center of the bottom of the gabion, extending the bottom ends of the bars into the bedrock, creates an effective reinforcement structure. The tight connection between the reinforcing bars and the bedrock further enhances the overall stability and strength of the retaining wall.

[0015] Furthermore, the spoil disposal site is a slope-type spoil disposal site.

[0016] Beneficial effects: The design of sloping spoil heaps can make full use of terrain conditions, reducing the land occupation and earthwork volume of the project. Through reasonable spoil stacking methods and slope control, sloping spoil heaps can improve slope stability. The internal structure of the spoil heap has an impact on slope stability to a certain extent, and the design of sloping spoil heaps can optimize the internal structure and reduce potential instability factors.

[0017] Furthermore, the dimensions of the wire gabion are 1.5m × 1.5m × 1.5m.

[0018] Beneficial effects: The 1.5m×1.5m×1.5m design of the wire mesh gabion is of moderate size, facilitating transportation and installation, reducing labor intensity and time costs during construction. The construction process of wire mesh gabions is relatively simple, requiring no complex equipment or techniques, and they can be quickly stacked to form retaining walls, improving construction efficiency. Simultaneously, this size of wire mesh gabions provides better overall stability when stacked to form retaining walls, resisting external pressure and water erosion. Wire mesh gabions have strong terrain adaptability, adapting to different slopes and terrain variations. This size of wire mesh gabions can be flexibly adjusted during stacking to suit different terrain conditions.

[0019] Furthermore, the retaining wall is composed of at least three layers of steel wire gabions stacked together, with the number of steel wire gabions used for stacking decreasing by one from bottom to top on the cross-section of the retaining wall.

[0020] Beneficial Effects: Retaining walls constructed from multiple layers of stacked wire mesh gabions allow for flexible adjustment of the number and position of each layer according to actual needs, making construction more flexible and convenient, and better adaptable to different construction environments and conditions. Furthermore, using stacked wire mesh gabions to construct retaining walls can significantly shorten the construction cycle, improve construction efficiency, and reduce material waste and labor costs during construction. The interior of the wire mesh gabions can be filled with stones, soil, and other materials, providing conditions for plant growth. Planting vegetation on and around the retaining wall surface can accelerate the ecological restoration process and improve the overall quality of the environment.

[0021] Furthermore, the top of the reinforcing bar extends into the retaining wall, and the bottom of the reinforcing bar extends into the bedrock with an extension distance of 0.5-1m.

[0022] Beneficial effects: The extension and reinforcement of the steel bars significantly improve the overturning resistance of the retaining wall. Under external loads or hydraulic action, the retaining wall can remain stable and is not prone to collapse or deformation.

[0023] Furthermore, the cross-sectional shape of the nutrient soil trough is one of the following: rectangular, trapezoidal, or triangular. The height of the trough wall is 0.5m and the thickness is 0.05m.

[0024] Beneficial Effects: Rectangular, trapezoidal, and triangular shapes are common stable geometric shapes that effectively disperse and resist external pressure, ensuring the stability of the nutrient soil trough during long-term use, extending its service life, and reducing the frequency of maintenance and replacement. Thicker trough walls (0.05m) enhance the overall strength and rigidity of the trough, preventing deformation or cracking due to soil pressure or external forces. They also resist damage from natural factors such as weathering and erosion, maintaining the integrity and functionality of the trough. The cross-sectional shapes of rectangular, trapezoidal, and triangular troughs have wide applicability, adapting to different climates and soil conditions, allowing the nutrient soil trough to remain stable and effective in various complex environments. The nutrient soil trough can be filled with high-quality soil and fertilizer, providing sufficient nutrients and water for plant growth. Planting vegetation around the trough can accelerate the ecological restoration process, improve environmental quality, and enhance ecosystem function.

[0025] Furthermore, the slag retaining wall is 5-6m high and 1.5m wide.

[0026] Beneficial effects: A higher retaining wall (5-6m) allows it to withstand greater loads, including the weight of the excavated material, water pressure, and potential external impacts. It effectively blocks and withstands pressure from excavated material or water, preventing overturning or collapse. A 1.5m wide retaining wall provides sufficient base support area, enhancing overall stability. Simultaneously, a 5-6m high retaining wall effectively blocks the flow of particulate matter and water, preventing them from entering unwanted areas. The 1.5m width provides sufficient cross-sectional area to capture and retain more particulate matter, improving blocking efficiency and preventing it from entering water bodies or polluting the surrounding environment. This helps protect the ecological environment and reduces the impact of construction on the surrounding environment.

[0027] Furthermore, the diameter of the reinforcing bar is 25mm, the length is 1m, and the spacing between adjacent reinforcing bars is 1.5m.

[0028] Beneficial effects: 25mm diameter steel bars have a high cross-sectional area and stiffness, effectively resisting shear forces. Under horizontal loads (such as wind and seismic loads), this design ensures the overall stability of the structure. Thicker bars can more effectively distribute and transfer pressure, thus improving the structure's compressive strength. Under vertical loads (such as the building's own weight and equipment loads), this design ensures the structure does not undergo excessive deformation or damage. Simultaneously, the 1.5m spacing between adjacent bars ensures effective connection while avoiding construction difficulties and increased costs caused by overly dense reinforcement. This layout allows the steel bars to play their maximum role in the structure. As a recyclable material, steel bars can be recycled during structural demolition or renovation, helping to reduce construction waste and promoting resource recycling and sustainable development.

[0029] Furthermore, the cross-section of the drainage ditch is one of the following: rectangular, trapezoidal, or triangular. The ditch wall is 0.5m high and 0.1m thick.

[0030] Beneficial effects: Rectangular, trapezoidal, and triangular cross-sectional shapes are common in drainage ditches. They can provide suitable water flow paths according to different terrains and drainage needs, reduce water flow resistance, improve drainage efficiency, and ensure smooth water discharge. The moderate height (0.5m) and thickness (0.1m) of the ditch walls ensure both structural stability and sufficient water flow capacity, enhancing drainage capacity while meeting diverse drainage requirements.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 This is an overall schematic diagram of an embodiment of the environmentally friendly waste disposal site that can handle construction wastewater according to this utility model;

[0033] Figure 2 This is an isometric view of the retaining wall of an embodiment of the environmentally friendly spoil disposal site that can handle construction wastewater according to this utility model;

[0034] Figure 3 This is a cross-sectional view of the nutrient soil tank in the embodiment of the environmentally friendly spoil disposal site that can handle construction drainage, when the cross-sectional shape is rectangular.

[0035] The reference numerals in the accompanying drawings include: 1. Water supply pipeline; 2. Pumping and spraying assembly; 3. Nutrient soil tank; 4. Slag retaining wall; 5. Reinforcing steel; 6. Wire mesh gabion; 7. Drainage ditch; 8. Sedimentation tank; 9. Submersible sewage pump; 10. Centrifugal pump; 11. Spraying unit. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The following detailed description illustrates the specific implementation method:

[0040] Example:

[0041] As attached Figure 1 , Figure 2 and Figure 3 As shown: An environmentally friendly waste disposal site for handling construction wastewater includes a hillside and a stream along the hillside. The waste disposal site is built on the slope of the hillside gully on the side of the stream gully, and the waste disposal site is a slope-type waste disposal site. At the bottom of the center of the hillside gully, there are several wire mesh gabions 6, each with a size of 1.5m × 1.5m × 1.5m. At the foot of the waste disposal site, there is a retaining wall 4 made up of several wire mesh gabions 6 stacked from bottom to top in an arithmetic sequence. The retaining wall 4 is made up of at least 3 layers of wire mesh gabions 6. The retaining wall 4 is 5-6m high and 1.5m wide. The number of wire mesh gabions 6 used for stacking on the cross section of the retaining wall 4 decreases by one from bottom to top, for example, 4, 3, 2, 1 or 3, 2, 1.

[0042] The bottom of the retaining wall 4 is cast and fixed on the excavated bedrock surface; each wire gabion 6 at the bottom of the retaining wall 4 has a steel bar 5 inserted in the center of its bottom surface; the top of the steel bar 5 extends into the retaining wall 4, the bottom of the steel bar 5 extends into the bedrock and the extension distance is 0.5-1m, the diameter of the steel bar 5 is 25mm, the length is 1m, and the spacing between adjacent steel bars 5 is 1.5m.

[0043] Nutrient soil troughs 3 are continuously installed on the horizontal plane of each level of steel wire gabion 6 of the retaining wall 4. The cross-sectional shape of the nutrient soil trough 3 is one of the rectangle, trapezoid and triangle. The height of the trough wall of the nutrient soil trough 3 is 0.5m and the thickness is 0.05m.

[0044] A sedimentation tank 8 is provided on the side of the retaining wall 4 away from the spoil disposal site. A drainage ditch 7 is provided on the lower side of the retaining wall 4, extending from the slope foot of the spoil disposal site to the sedimentation tank 8. The cross-section of the drainage ditch 7 is one of rectangular, trapezoidal and triangular. The wall height of the drainage ditch 7 is 0.5m and the thickness is 0.1m.

[0045] It also includes a water pumping and spraying assembly 2, which includes a sewage submersible pump 9 installed in the sedimentation tank 8. The sewage submersible pump 9 is connected to a water conveyance pipe 1, which is laid from the sedimentation tank 8 to the top of the spoil disposal site. It is generally used to transport the drainage generated at the construction site to the top of the spoil disposal site for filtration and to pump the water that has undergone primary filtration and sedimentation in the sedimentation tank 8 back to the top of the spoil disposal site for secondary filtration and sedimentation, thereby enhancing the water purification effect. It also transports the filtered and sedimented water to the surface of the spoil disposal site, along the construction road, and the construction camp, etc., to provide cooling and dust suppression water. A centrifugal pump 10 is installed on one side of the sedimentation tank 8 at the foot of the spoil heap slope. The centrifugal pump 10 is connected to the sewage submersible pump 9 through a water supply pipeline 1. The water supply pipeline 1 is connected to several spray units 11 located on the surface of the spoil heap, along the construction road, and at the construction camp. The spray units 11 are installed at least on the surface of the spoil heap, along the construction road, and at the construction camp. Each spray unit 11 includes a spraying device, a fixed spraying device, and a rotating spraying device. The spraying device is installed at the construction camp and along the construction road for cooling and dust removal in the access road, duty room, workers' dormitory, and warehouse. The fixed spraying device and the rotating spraying device are installed on the surface of the spoil heap and along the construction road for dust removal and dust suppression in the spoil heap itself and the construction road.

[0046] The specific implementation process is as follows: First, before starting the waste disposal, the silt in the hillside gully needs to be thoroughly removed. Silt usually contains high levels of moisture and organic matter, which is detrimental to the stability of the retaining wall 4 and subsequent drainage treatment. When removing the silt, appropriate mechanical equipment, such as excavators or loaders, should be used, and the removal work should be thorough, leaving no dead corners. After the cleaning is completed, the retaining wall 4 is set at the bottom of the original gully center to maximize the use of the terrain advantages, improve the stability of the retaining wall 4, and extend along the contour line to better adapt to terrain changes and reduce the scouring of the retaining wall 4 by the water flow.

[0047] On the upper slope of the hillside gully, the topsoil needs to be removed to a thickness of at least 30cm to ensure the smooth progress of subsequent waste disposal. When removing the topsoil, care should be taken to protect the surrounding vegetation and ecological environment to avoid excessive damage. At the location of retaining wall 4, the topsoil needs to be removed until the bedrock is exposed. This is to ensure that retaining wall 4 can be firmly established on a stable foundation. Appropriate tools and methods should be used when removing the topsoil to avoid unnecessary damage to the bedrock. The removed topsoil should be piled on one side of the site for later use, generally for subsequent slope greening.

[0048] According to the design requirements (5-6m high, 1.5m wide), construct the retaining wall 4. The construction of the retaining wall 4 should strictly follow the construction specifications to ensure the stability and durability of the wall. Then, construct drainage ditches 7 behind and around the retaining wall 4. The cross-sectional shape of the drainage ditches 7 can be chosen from rectangular, trapezoidal, or triangular shapes depending on the actual situation. The height and thickness of the ditch walls should also be determined according to the design requirements and construction conditions (0.5m high, 0.1m thick) to ensure stability and drainage effectiveness. Next, construct a nutrient soil trough 3 below the slope to store and supply the nutrient soil needed for greening the slope. At the end of the drainage ditches 7, construct a sedimentation tank 8 to settle and filter impurities and particulate matter in the water flowing out of the drainage ditches 7.

[0049] Following the design requirements, waste was disposed of along the slope of the spoil heap, ensuring even distribution to avoid excessively high or low local accumulation. The slope was covered with a dense green netting to prevent soil erosion and slope instability. Topsoil was placed in nutrient troughs (3), and climbing plants were planted for landscaping. The selection of climbing plants was determined based on local climate and soil conditions to ensure healthy growth and effective greening. The slope gradient was chosen based on the amount of waste piled at each location and the slope's stability, generally controlled between 1:1 and 1:2.

[0050] Finally, several water supply pipelines 1 and sprinkler systems are installed at the spoil heap, from the construction site to the spoil heap, from the spoil heap slope to the sedimentation tank 8, along the construction roads, and within the construction camp. The water supply pipelines 1 are used to transport water to the sprinkler systems and drainage ditches 7, while the sprinkler systems are used to spray water to reduce dust and maintain humidity at the spoil heap. Connecting and integrating the water supply pipelines 1, sprinkler systems, spoil heap, submersible sewage pump 9, centrifugal pump 10, sedimentation tank 8, and drainage ditches 7 forms an integrated construction drainage treatment system. This system effectively collects and treats sewage and wastewater generated at the spoil heap, ensuring smooth drainage and water quality compliance during construction.

[0051] Obviously, the above embodiments are merely examples to clearly illustrate the changes made, and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An environmentally friendly waste disposal site for treating construction wastewater, comprising a hillside and a stream along the hillside, characterized in that, A waste disposal site is built along the slope of the hillside gully on the side of the stream. Several wire mesh gabions (6) are installed at the bottom of the gully. A retaining wall (4) is built at the foot of the waste disposal site, consisting of several wire mesh gabions (6) stacked from bottom to top in an arithmetic sequence. Nutrient soil troughs (3) are continuously installed on the horizontal surface of each level of wire mesh gabion (6) of the retaining wall (4). A sedimentation tank (8) is provided on the side of the retaining wall (4) away from the waste disposal site. A drainage ditch (7) extends from the foot of the waste disposal site to the sedimentation tank (8) on the lower side of the retaining wall (4). It also includes a water pumping and spraying assembly (2), which includes a sewage submersible pump (9) installed in a sedimentation tank (8). The sewage submersible pump (9) is connected to a water conveyance pipe (1). The water conveyance pipe (1) is laid from the sedimentation tank (8) to the top of the spoil disposal site. A centrifugal pump (10) is installed on one side of the sedimentation tank (8) at the foot of the spoil disposal site. The centrifugal pump (10) and the sewage submersible pump (9) are connected through the water conveyance pipe (1). The water conveyance pipe (1) is connected to several spraying units (11) located on the surface of the spoil disposal site, along the construction road and the construction camp.

2. The environmentally friendly waste disposal site for treating construction wastewater according to claim 1, characterized in that, The bottom of the retaining wall (4) is set on the bedrock surface after excavation; each wire gabion (6) at the bottom of the retaining wall (4) is reinforced with steel bars (5) in the center of its bottom surface.

3. The environmentally friendly waste disposal site capable of handling construction wastewater according to claim 2, characterized in that, The spoil disposal site is a slope-type spoil disposal site.

4. The environmentally friendly waste disposal site for treating construction wastewater according to claim 3, characterized in that, The dimensions of the wire gabion (6) are 1.5m×1.5m×1.5m.

5. The environmentally friendly waste disposal site for treating construction wastewater according to claim 4, characterized in that, The retaining wall (4) is made up of at least 3 layers of steel wire gabions (6) stacked together. The number of steel wire gabions (6) used for stacking decreases by one from bottom to top on the cross section of the retaining wall (4).

6. The environmentally friendly waste disposal site for treating construction wastewater according to claim 5, characterized in that, The top of the reinforcing bar (5) extends into the retaining wall (4), and the bottom of the reinforcing bar (5) extends into the bedrock with an extension distance of 0.5-1m.

7. The environmentally friendly waste disposal site for treating construction wastewater according to claim 6, characterized in that, The cross-sectional shape of the nutrient soil trough (3) is one of the following: rectangular, trapezoidal and triangular. The height of the trough wall of the nutrient soil trough (3) is 0.5m and the thickness is 0.05m.

8. The environmentally friendly waste disposal site for treating construction wastewater according to claim 7, characterized in that, The slag retaining wall (4) is 5-6m high and 1.5m wide.

9. The environmentally friendly waste disposal site for treating construction wastewater according to claim 8, characterized in that, The diameter of the steel bar (5) is 25mm and the length is 1m. The spacing between adjacent steel bars (5) is 1.5m.

10. The environmentally friendly waste disposal site for treating construction wastewater according to claim 9, characterized in that, The cross-section of the drainage ditch (7) is one of the following: rectangular, trapezoidal and triangular. The wall height of the drainage ditch (7) is 0.5m and the thickness is 0.1m.

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