Horizontal radiation seepage well and artificial soil infiltration composite system

Abstract

The utility model discloses a horizontal radiation seepage well and artificial soil percolation composite system. A pretreatment area, a seepage well treatment area, a percolation treatment area and a rainwater recycling area are sequentially arranged in the rainwater runoff direction. The pretreatment area is provided with a gravel drainage layer, a vegetation layer is arranged on the gravel drainage layer, a gravel layer is arranged at the front end of the gravel drainage layer, and the rear end of the gravel drainage layer is connected to the seepage well treatment area; a horizontal radiation seepage well is arranged in the seepage well treatment area, a seepage structure is arranged on the periphery of the well wall of the bottom of the horizontal radiation seepage well, and the seepage structure sequentially comprises water-permeable geotextile, a water-permeable filler layer, water-permeable geotextile and a gravel drainage layer from top to bottom; according to the utility model, the rainwater runoff is divided and layered according to the rainwater runoff direction, the hydraulic retention time is longer, and the rainwater purification treatment effect is better.

Description

Technical Field

[0001] This utility model relates to the technical field of horizontal radial infiltration well facilities for sponge city construction, and in particular to a composite system of horizontal radial infiltration well and artificial soil infiltration. Background Technology

[0002] To achieve the goals of alleviating water shortages and improving water quality-related water scarcity, sponge city construction comprehensively adopts a variety of technical measures such as infiltration, retention, storage, purification, utilization, and drainage to improve the infiltration, regulation, purification, utilization, and discharge capacity of runoff rainwater. This aims to reduce the occurrence of urban flooding, protect the urban water system environment, promote rainwater recycling, and maintain the ecological function of rainwater infiltration and storage in built-up areas.

[0003] Horizontal radial infiltration wells are sponge-like facilities that allow rainwater to infiltrate through the well walls and bottom. Before infiltration, rainwater is typically pre-treated by a vegetation buffer zone. To enhance infiltration efficiency, horizontally perforated blind pipes are often installed around the well to form a horizontal radial infiltration well, with gravel laid around the blind pipes. Using horizontal radial infiltration wells alone has the advantage of lower construction costs, but it also has disadvantages such as limited control over water quality and quantity, and relatively poor effluent quality.

[0004] Artificial soil infiltration is a supporting facility for rainwater harvesting and reuse ponds. It mainly uses plants, soil, and microbial systems to retain, infiltrate, and purify runoff rainwater to meet rainwater reuse quality standards. Artificial soil infiltration alone has the advantage of good rainwater purification effect, but it has disadvantages such as insufficient pretreatment capacity, high construction costs, and high operation and maintenance costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a composite system of horizontal radiation infiltration well and artificial soil infiltration in order to overcome the shortcomings of the existing technology.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a horizontal radiation infiltration well and artificial soil infiltration composite system, which is arranged in sequence according to the direction of rainwater runoff, including a pretreatment area, an infiltration well treatment area, an infiltration treatment area and a rainwater reuse area;

[0007] The pretreatment zone is equipped with a gravel drainage layer, a vegetation layer is provided on the gravel drainage layer, a crushed stone layer is provided at the front end of the gravel drainage layer, and the rear end of the gravel drainage layer is connected to the seepage well treatment zone.

[0008] By adopting the above technical solution, a vegetation buffer zone is set up in the pretreatment area to pretreat runoff rainwater. Its main function is to intercept and remove large suspended particles and slow down the flow rate.

[0009] The infiltration well treatment area is equipped with horizontal radial infiltration wells. The bottom wall of the horizontal radial infiltration well is surrounded by an infiltration well filtration structure. The infiltration well filtration structure includes, from top to bottom, a permeable geotextile, a permeable filler layer, a permeable geotextile, and a gravel drainage layer. The horizontal radial infiltration wells and the filtration structure are connected by a water distribution pipe.

[0010] The main function of adopting the above technical solution is to further intercept and remove suspended solids and colloids.

[0011] The infiltration treatment area is equipped with an artificial soil infiltration structure, which is arranged from top to bottom as a vegetation layer, a steel slag layer, a permeable sand layer, a permeable geotextile, and a gravel drainage layer.

[0012] By adopting the above technical solution, the main function is to further intercept and remove suspended solids and colloids, and to purify and remove pollutants such as nitrogen and phosphorus through plants, soil and microbial systems, and plant suitable plants in the vegetation layer.

[0013] The rainwater reuse area adopts a rainwater collection and reuse pond, and the infiltration treatment area is connected to the rainwater collection and reuse pond through a drainage pipe. Its main function is to be used for greening irrigation and road watering, so as to realize the resource utilization of rainwater.

[0014] Furthermore, the drainage pipe described in this utility model is equipped with an integrated water quality and quantity monitoring device for real-time monitoring of water quality and quantity.

[0015] Furthermore, the rainwater collection and reuse tank described in this utility model is constructed using PP polypropylene modules.

[0016] Furthermore, the seepage well treatment zone and the filtration treatment zone described in this utility model are connected by a gravel drainage layer.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model has a zoned and layered interception and purification structure designed according to the direction of rainwater runoff, which has a longer hydraulic retention time and better rainwater purification effect.

[0019] 2. This utility model adopts a horizontal radiation infiltration well-artificial soil infiltration composite system, which has low construction costs and low operation and maintenance costs.

[0020] 3. This utility model is used for greening irrigation and road watering, meeting the needs of rainwater resource utilization, and has a wide range of applications.

[0021] 4. This utility model adopts ecological sponge city measures, which have good ecological and environmental benefits and are of great significance for further promoting the construction of sponge cities. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the seepage well filtration structure in this utility model;

[0025] Figure 3 This is a schematic diagram of the artificial soil infiltration structure in this utility model.

[0026] The following are labeled in the diagram: 1. Gravel drainage layer, 2. Vegetation layer, 3. Crushed stone layer, 4. Horizontal radial infiltration well, 5. Permeable geotextile, 6. Permeable filler layer, 7. Water distribution pipe, 8. Steel slag layer, 9. Permeable sand layer, 10. Rainwater collection and reuse pond, 11. Drainage pipe, 12. Integrated water quality and quantity monitoring device. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figures 1-3 The system shown is a horizontal radiation infiltration well and artificial soil infiltration composite system, which is arranged in sequence according to the direction of rainwater runoff, including a pretreatment zone, an infiltration well treatment zone, an infiltration treatment zone and a rainwater reuse zone;

[0029] The pretreatment area is equipped with a gravel drainage layer 1, a vegetation layer 2 is installed on the gravel drainage layer 1, a crushed stone layer 3 is installed at the front end of the gravel drainage layer 1, and the rear end of the gravel drainage layer 1 is connected to the seepage well treatment area.

[0030] The inlet is surrounded by scattered gravel with a particle size of 20mm-30mm to reduce the scouring and erosion of the vegetation buffer zone by runoff rainwater; the gravel drainage layer is 200mm thick with a particle size of 10mm-20mm.

[0031] A horizontal radial infiltration well 4 is set up in the infiltration well treatment area. The bottom wall of the horizontal radial infiltration well 4 is surrounded by an infiltration well filtration structure. The infiltration well filtration structure includes, from top to bottom, a permeable geotextile 5, a permeable filler layer 6, a permeable geotextile 5 and a gravel drainage layer 1. The horizontal radial infiltration well 4 and the filtration structure are connected by a water distribution pipe 7.

[0032] The permeable geotextile has a thickness of not less than 2.0 mm and a density of 200 g / m2; the permeable filler layer has a thickness of 500 mm and a steel slag particle size of 20 mm-30 mm; the permeable geotextile has a thickness of not less than 2.0 mm and a density of 200 g / m2; the gravel drainage layer has a thickness of 200 mm and a gravel particle size of 10 mm-20 mm; and the water distribution pipe uses DN100 PE blind pipe with an opening rate of 12%.

[0033] The infiltration treatment area is equipped with an artificial soil infiltration structure, which consists of a vegetation layer 2, a steel slag layer 8, a permeable sand layer 9, a permeable geotextile 5, and a gravel drainage layer 1 from top to bottom; the rainwater reuse area adopts a rainwater collection and reuse pond 10, and the infiltration treatment area and the rainwater collection and reuse pond 10 are connected by a drainage pipe 11.

[0034] The steel slag layer is 30mm thick with a particle size of 20mm-30mm; the permeable sand layer is 200mm thick, and the mixed sand consists of 60% medium-coarse sand, 39% landscape planting soil, and 1% nutrient soil by mass percentage; the permeable geotextile is at least 2.0mm thick with a density of 200g / m2; the gravel drainage layer is 200mm thick with a gravel particle size of 10mm-20mm, and the water distribution pipe uses DN100 PE blind pipes with an opening rate of 12%.

[0035] A water quality and quantity integrated monitoring device 12 is installed inside the drainage pipe 11. The rainwater collection and reuse tank 10 is constructed using PP polypropylene modules. The infiltration well treatment area and the infiltration treatment area are connected by a gravel drainage layer 1.

[0036] The horizontal radiation infiltration well-artificial soil infiltration composite system adopted in this utility model is designed with a zoned and layered interception and purification structure according to the direction of rainwater runoff. It has a long hydraulic retention time and a better rainwater purification effect, which solves the problems of poor rainwater purification effect, high construction cost, high operation and maintenance cost, low rainwater resource utilization rate and poor ecological and environmental benefits of existing rainwater treatment systems.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite system of horizontal radial infiltration wells and artificial soil infiltration, characterized in that: The rainwater runoff direction is arranged in sequence as follows: pretreatment zone, infiltration well treatment zone, infiltration treatment zone and rainwater reuse zone. The pretreatment zone is provided with a gravel drainage layer (1), a vegetation layer (2) is provided on the gravel drainage layer (1), a crushed stone layer (3) is provided at the front end of the gravel drainage layer (1), and the rear end of the gravel drainage layer (1) is connected to the seepage well treatment zone. The infiltration treatment area is provided with horizontal radial infiltration wells (4). The bottom wall of the horizontal radial infiltration well (4) is provided with an infiltration filtration structure. The infiltration filtration structure includes permeable geotextile (5), permeable filler layer (6), permeable geotextile (5) and gravel drainage layer (1) from top to bottom. The horizontal radial infiltration well (4) and the infiltration structure are connected by a water distribution pipe (7). The infiltration treatment area is equipped with an artificial soil infiltration structure, which is arranged from top to bottom as a vegetation layer (2), a steel slag layer (8), a permeable sand layer (9), a permeable geotextile (5), and a gravel drainage layer (1). The rainwater reuse area adopts a rainwater collection and reuse tank (10), and the infiltration treatment area is connected to the rainwater collection and reuse tank (10) through a drainage pipe (11).

2. The horizontal radial infiltration well and artificial soil infiltration composite system as described in claim 1, characterized in that: The drainage pipe (11) is equipped with an integrated water quality and quantity monitoring device (12).

3. The horizontal radial infiltration well and artificial soil infiltration composite system as described in claim 1, characterized in that: The rainwater collection and reuse tank (10) is constructed using PP polypropylene modules.

4. The horizontal radial infiltration well and artificial soil infiltration composite system as described in claim 1, characterized in that: The seepage well treatment area and the infiltration treatment area are connected by a gravel drainage layer (1).

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