Intercepting equipment for blocking soil heavy metal pollution in situ

Abstract

The utility model relates to the technical field of heavy metal soil interception tools, in particular to interception equipment for soil heavy metal pollution in-situ interception, which comprises an obstruction pad and an adsorption pad arranged on the inner surface of the obstruction pad, and the obstruction pad consists of a central base layer and bentonite waterproof blankets arranged on the inner side surface and the outer side surface of the central base layer. A polyethylene film is arranged on the outer surface of the geosynthetic clay liner, the adsorption pad comprises a nano adsorption layer arranged on the surface of the polyethylene film on the inner layer, a zeolite layer is arranged on the inner surface of the nano adsorption layer, an activated carbon adsorption layer is arranged on the inner surface of the zeolite layer, and a peripheral water retaining fence is arranged on the surface of the adsorption pad. A waterproof top is arranged at the top of the peripheral water retaining fence, a plurality of vertical beams are fixedly installed at the bottom of the waterproof top, and spraying assemblies are arranged on the vertical beams. The soil heavy metal pollution intercepting device can intercept soil heavy metal pollution and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of heavy metal soil interception tools, specifically, to an interception device for in-situ interception of heavy metal pollution in soil. Background Technology

[0002] With the acceleration of industrialization and urbanization, heavy metal pollution has become increasingly serious, with soil heavy metal pollution being particularly prominent. Heavy metal pollution not only affects soil quality but also impacts human health through the food chain. To reduce the continued spread of heavy metal pollution, remediation is usually necessary. In-situ containment is an effective remediation method. By installing specific interception equipment, it can effectively prevent the migration and spread of heavy metals in the soil, thereby reducing their harm to the environment and human health.

[0003] However, traditional interception devices are typically installed around the contaminated soil and properly sealed off, leaving the bottom of the contaminated soil still connected to the surrounding soil. While this effectively prevents the migration and spread of heavy metals within the soil, during rainy weather, rainfall and groundwater runoff can easily carry heavy metals to a wider area, hindering the achievement of truly effective interception. Therefore, we propose an in-situ interception device for heavy metal pollution control in soil. Utility Model Content

[0004] The purpose of this invention is to provide an interception device for in-situ blocking of heavy metal pollution in soil, so as to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An interception device for in-situ heavy metal pollution control in soil includes a barrier pad and an adsorption pad disposed on the inner surface of the barrier pad. The barrier pad consists of a central base layer and bentonite waterproof blankets disposed on the inner and outer sides of the central base layer. A polyethylene film is disposed on the outer surface of the bentonite waterproof blanket. The adsorption pad includes a nano-adsorption layer disposed on the surface of the inner polyethylene film. A zeolite layer is disposed on the inner surface of the nano-adsorption layer. An activated carbon adsorption layer is disposed on the inner surface of the zeolite layer. A closed perimeter water barrier is disposed on the surface of the adsorption pad. A waterproof roof is disposed on the top of the perimeter water barrier. Multiple vertical beams are fixedly installed at the bottom of the waterproof roof.

[0007] Preferably, a door frame is provided on one side of the surrounding water-retaining fence, and a fire door is provided on the door frame.

[0008] Preferably, a base is fixedly installed at the bottom end of the vertical beam, and the base is fixedly installed on an external base.

[0009] Preferably, the central base layer, the bentonite waterproof blanket, and the polyethylene film are integrally formed, and the side panels of the waterproof roof abut against the top surface of the surrounding water-retaining fence.

[0010] Preferably, a spray assembly is provided on the vertical beam. The spray assembly includes a liquid medicine storage tank disposed inside the surrounding water-blocking fence. A booster pump is provided on one side of the liquid medicine storage tank. The inlet of the booster pump is connected to the liquid medicine storage tank through a suction pipe. A delivery pipe is fixedly installed at the outlet of the booster pump. Multiple horizontal pipes arranged at equal intervals are fixedly installed on the top of the delivery pipe. Multiple nozzles arranged at equal intervals are fixedly installed at the bottom of the horizontal pipes.

[0011] Preferably, an addition tube is fixedly installed on the top surface of the medicine storage cylinder, and a top cover is fitted onto the addition tube.

[0012] Preferably, the waterproof roof has an inverted V-shaped cross-section, and the end of the waterproof roof extends to the outside of the surrounding water-retaining fence.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of barrier pads and adsorption pads, can contain soil contaminated with heavy metals, preventing the soil contaminated with heavy metals from directly contacting the outside world. In addition, the setting of waterproof top can achieve a waterproof effect, and the setting of surrounding water-blocking fence can prevent rainwater from entering the containing soil contaminated with heavy metals, achieving a more comprehensive interception effect.

[0015] 2. This utility model, through the spraying component, ensures that during use, a booster pump can be used to deliver the pesticide solution from the nozzle and spray it onto the soil contaminated with heavy metals for treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the spray assembly of this utility model;

[0018] Figure 3 This is a cross-sectional view of the barrier pad and adsorption pad of this utility model;

[0019] The meanings of the labels in the diagram are as follows:

[0020] 1. Barrier pad; 10. Subbase layer; 11. Bentonite waterproofing blanket; 12. Polyethylene film;

[0021] 2. Adsorption pad; 20. Nano-adsorption layer; 21. Zeolite layer; 22. Activated carbon adsorption layer;

[0022] 3. Perimeter flood-retaining fencing; 30. Door frame; 31. Fire door;

[0023] 4. Vertical beam; 40. Base; 41. Waterproof roof;

[0024] 5. Spray assembly; 50. Liquid storage tank; 51. Addition pipe; 52. Top cover; 53. Booster pump; 54. Suction pipe; 55. Delivery pipe; 56. Horizontal pipe; 57. Nozzle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-3 This utility model provides a technical solution: an interception device for in-situ interception of heavy metal pollution in soil, including a barrier pad 1 and an adsorption pad 2 disposed on the inner surface of the barrier pad 1. The barrier pad 1 is composed of a central base layer 10 and bentonite waterproof blankets 11 disposed on the inner and outer sides of the central base layer 10. A polyethylene film 12 is disposed on the outer surface of the bentonite waterproof blanket 11. The polyethylene film 12 can perform waterproof protection to prevent the water of heavy metal wastewater from penetrating into the external soil.

[0027] Specifically, the adsorption pad 2 includes a nano-adsorption layer 20 disposed on the surface of the inner polyethylene film 12, a zeolite layer 21 disposed on the inner surface of the nano-adsorption layer 20, and an activated carbon adsorption layer 22 disposed on the inner surface of the zeolite layer 21, so as to realize the adsorption treatment of soil contaminated with heavy metals, thereby adsorbing and fixing heavy metal ions and further reducing their diffusion risk.

[0028] Specifically, the surface of the adsorption pad 2 is provided with a closed perimeter water barrier 3, which can prevent external water from entering the soil contaminated with heavy metals; the top of the perimeter water barrier 3 is provided with a waterproof roof 41, and multiple vertical beams 4 are fixedly installed at the bottom of the waterproof roof 41, which can provide waterproof protection from the top.

[0029] In this embodiment, a door frame 30 is provided on one side of the surrounding water-blocking fence 3, and a fire door 31 is provided on the door frame 30. The fire door 31 is used for staff to enter and exit.

[0030] Specifically, a base 40 is fixedly installed at the bottom of the vertical beam 4. The base 40 is fixedly installed on the external base to support the waterproof roof 41.

[0031] Furthermore, the central base layer 10, the bentonite waterproof blanket 11, and the polyethylene film 12 are integrally formed, ensuring that the overall structure is more robust and stable; the side panels of the waterproof roof 41 abut against the top surface of the surrounding water-retaining fence 3, making the structure of the waterproof roof 41 more robust and stable.

[0032] In addition, a spray assembly 5 is installed on the vertical beam 4. The spray assembly 5 includes a liquid storage tank 50 installed inside the surrounding water-retaining fence 3. A booster pump 53 is installed on one side of the liquid storage tank 50. The water inlet of the booster pump 53 is connected to the liquid storage tank 50 through a suction pipe 54. A delivery pipe 55 is fixedly installed at the water outlet of the booster pump 53. Multiple horizontal pipes 56 arranged at equal intervals are fixedly installed on the top of the delivery pipe 55. The horizontal pipes 56 are fixedly installed on the corresponding vertical beam 4. Multiple nozzles 57 arranged at equal intervals are fixedly installed at the bottom of the horizontal pipes 56, so as to realize the spraying of liquid to treat soil contaminated with heavy metals.

[0033] It is worth noting that an addition tube 51 is fixedly installed on the top surface of the medicine storage cylinder 50, and a top cover 52 is fitted on the addition tube 51 to facilitate the addition of medicine by opening the top cover 52.

[0034] It is worth noting that the cross-section of the waterproof roof 41 is inverted V-shaped, and the end of the waterproof roof 41 extends to the outside of the surrounding water barrier 3, making it difficult for rainwater to enter the interior of the surrounding water barrier 3.

[0035] In use, the interception device for in-situ heavy metal pollution control in soil of this utility model involves digging corresponding pits in uncontaminated soil, simultaneously constructing a perimeter water barrier 3 around the uncontaminated soil, laying a barrier mat 1 in the pit, followed by laying corresponding nano-adsorption layer 20, zeolite layer 21, and activated carbon adsorption layer 22. The heavy metal contaminated soil is then transferred to the activated carbon adsorption layer 22. Finally, a vertical beam 4 and a waterproof roof 41 are erected, and the spray assembly 5 is assembled. After assembly, the corresponding liquid can be added to the liquid storage tank 50, and the booster pump 53 is connected to an external power source and put into operation. The booster pump 53 operates to deliver the liquid to the nozzle 57 for spraying, thus achieving the spray treatment operation.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An interception device for in-situ prevention of heavy metal pollution in soil, characterized in that: The device includes a barrier pad (1) and an adsorption pad (2) disposed on the inner surface of the barrier pad (1). The barrier pad (1) consists of a central base layer (10) and bentonite waterproof blankets (11) disposed on the inner and outer sides of the central base layer (10). A polyethylene film (12) is disposed on the outer surface of the bentonite waterproof blanket (11). The adsorption pad (2) includes a nano-adsorption layer (20) disposed on the surface of the inner polyethylene film (12). A zeolite layer (21) is disposed on the inner surface of the nano-adsorption layer (20). An activated carbon adsorption layer (22) is disposed on the inner surface of the zeolite layer (21). A closed perimeter water barrier (3) is disposed on the surface of the adsorption pad (2). A waterproof top (41) is disposed on the top of the perimeter water barrier (3). Multiple vertical beams (4) are fixedly installed at the bottom of the waterproof top (41).

2. The interception device for in-situ interception of heavy metal pollution in soil according to claim 1, characterized in that: A door frame (30) is provided on one side of the surrounding water-blocking fence (3), and a fire door (31) is provided on the door frame (30).

3. The interception device for in-situ heavy metal pollution control in soil according to claim 1, characterized in that: The bottom end of the vertical beam (4) is fixedly installed with a base (40), and the base (40) is fixedly installed on an external base.

4. The interception device for in-situ heavy metal pollution control in soil according to claim 1, characterized in that: The central base layer (10), the bentonite waterproof blanket (11) and the polyethylene film (12) are integrally formed structures, and the side plate of the waterproof top (41) abuts against the top surface of the surrounding water-blocking fence (3).

5. The interception device for in-situ heavy metal pollution control in soil according to claim 1, characterized in that: A spray assembly (5) is provided on the vertical beam (4). The spray assembly (5) includes a liquid storage tank (50) inside the surrounding water barrier (3). A booster pump (53) is provided on one side of the liquid storage tank (50). The inlet end of the booster pump (53) is connected to the liquid storage tank (50) through a suction pipe (54). A delivery pipe (55) is fixedly installed at the outlet end of the booster pump (53). Multiple horizontal pipes (56) are fixedly installed at equal intervals on the top pipe of the delivery pipe (55). Multiple nozzles (57) are fixedly installed at equal intervals on the bottom of the horizontal pipes (56).

6. The interception device for in-situ heavy metal pollution control in soil according to claim 5, characterized in that: An addition tube (51) is fixedly installed on the top surface of the medicine storage cylinder (50), and a top cover (52) is fitted on the addition tube (51).

7. The interception device for in-situ interception of heavy metal pollution in soil according to claim 1, characterized in that: The waterproof roof (41) has an inverted V-shaped cross section, and the end of the waterproof roof (41) extends to the outside of the surrounding water-blocking fence (3).

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