Heavy metal contaminated soil purification equipment

Abstract

The utility model discloses heavy metal contaminated soil purification equipment, and relates to the technical field of contaminated soil treatment, the heavy metal contaminated soil purification equipment comprises a heavy metal absorption assembly and a spraying assembly, the spraying assembly is erected right above the heavy metal absorption assembly, and a sedimentation tank assembly is arranged at the bottom of the heavy metal absorption assembly; the left side and the right side of the sedimentation tank assembly are connected with purification assemblies. According to the heavy metal contaminated soil purification equipment, the heavy metal absorption assembly is matched with the spraying assembly for combined use, contaminated soil can be subjected to biological treatment and chemical treatment at the same time, phytoremediation is utilized, heavy metal components in the soil are absorbed, and reagents are sprayed into the soil through independent nozzles, so that the heavy metal contaminated soil is purified. Heavy metals in the soil are gradually separated out by virtue of liquid permeation, then the wastewater containing the heavy metals is precipitated by virtue of the precipitation tank assembly, and the wastewater is filtered and purified by virtue of the purification assemblies on the two sides, so that environment-friendly and effective soil purification is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of contaminated soil treatment, in particular to heavy metal contaminated soil purification equipment. Background Art

[0002] Since waste gas, wastewater and other sources enter the soil, the various heavy metal elements contained in these wastes will cause the heavy metal elements in the soil to exceed the limit that the soil itself can withstand, which directly affects the self-circulation capacity of the soil. This is land heavy metal pollution;

[0003] There are two main ways to control heavy metal pollution in soil. One is to change the state of heavy metals in the soil from an activated state to a stable state, so that the heavy metals "do not run around", and the other is to remove heavy metals from the soil. Usually, the second method is preferred;

[0004] There are two common treatment methods. The first one is to use physical and chemical methods for heavily polluted soil with a small area, and to extract volatile heavy metals from the soil by heating. If the heavy metals in the soil have low permeability and poor conductivity, they will be removed by electrochemical methods. If the heavy metals in the soil have high solubility, reagents can be used to react with the heavy metals in the soil to precipitate heavy metal ions or metal reagent complexes. However, this method is not suitable for soils with a large pollution area.

[0005] The second method is to use the metabolic activities of organisms to reduce the concentration of heavy metals in the soil or change the form of heavy metals, and finally restore the contaminated soil to its original state partially or completely. There are three types of bioremediation methods: plant remediation, microbial remediation, and lower animal remediation. All of them use plants, microorganisms, and lower animals to absorb, precipitate, oxidize, and reduce heavy metals in the soil to achieve the purpose of remediation.

[0006] For example, the utility model with application number 202021940593.7 discloses a heavy metal contaminated soil purification device, which has two liquid inlet pipes on both sides of the purification device body, and the height of the liquid inlet pipes is lower than the second screening plate, and two supporting legs are fixedly installed on the bottom surface of the purification device body. The utility model has a reasonable structure, improves the efficiency of heavy metal contaminated soil purification, and meets the needs of staff. However, during the use of the heavy metal contaminated soil purification device, the contaminated soil is treated inside the closed structure of the purification device body. The unilateral use of remediation reagents makes it difficult to fully remove the heavy metal components in the soil. At the same time, the waste liquid generated by it will also cause secondary pollution to the external environment.

[0007] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a heavy metal contaminated soil purification device is proposed. Utility Model Content

[0008] The purpose of the utility model is to provide a heavy metal contaminated soil purification device to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy metal contaminated soil purification device, comprising a heavy metal absorption component and a spray component, a spray component is mounted directly above the heavy metal absorption component, and a sedimentation tank component is arranged at the bottom of the heavy metal absorption component, and purification components are connected to the left and right sides of the sedimentation tank component, a fixing bolt is threadedly connected between the heavy metal absorption component and the sedimentation tank component, the heavy metal absorption component comprises a stacking box, a fixed block, a grid, a slot, a plant box and an activated carbon filter plate, the left and right sides of the stacking box are connected to the fixed blocks, and a grid is arranged at the top opening of the stacking box, and a slot is opened at the junction of the stacking box and the grid, and a plant box is placed in the middle of the grid, and an activated carbon filter plate is installed at the bottom opening of the stacking box.

[0010] Furthermore, the bottom of the plant box is arranged with a grid structure for interconnection with the interior of the stacking box, and the activated carbon filter plate is embedded and installed in the bottom of the stacking box.

[0011] Furthermore, the spray assembly includes a suspension frame, a slider, a diverter pipe, a quick-connect valve and an independent nozzle. The sliders are connected to the front and rear sides of the suspension frame, and a diverter pipe is installed in the middle of the suspension frame. A quick-connect valve is provided on one side of the diverter pipe, and an independent nozzle is vertically connected to the bottom of the diverter pipe.

[0012] Furthermore, the independent nozzles are arranged in an equidistant array structure, and the slider is welded to the suspension frame.

[0013] Furthermore, the sedimentation tank assembly includes a liquid accumulation tank, a quick connector, a connecting piece, a first bracket and a second bracket. Quick connectors are installed on both sides of the left and right sides of the liquid accumulation tank, and connecting pieces are provided at four diagonal positions on the inner wall of the liquid accumulation tank. The first bracket is vertically installed on the top of both the front and rear sides of the liquid accumulation tank, and the second bracket is vertically installed on both sides of the left and right sides of the liquid accumulation tank.

[0014] Furthermore, the first bracket and the fixed block are both threadedly connected to the fixing bolts, the sliding block is slidably connected to the second bracket, and the second bracket vertically penetrates the middle of the fixed block, the receiving block is fixedly connected to the liquid accumulation pool, and the activated carbon filter plate is horizontally placed on the top surface of the receiving block.

[0015] Furthermore, the purification component includes a first-stage ultrafiltration, a second-stage ultrafiltration, a fixing frame, a connecting pipe, a water pump and a drain valve, the second-stage ultrafiltration is horizontally arranged below the first-stage ultrafiltration, and a fixing frame is installed at the bottom of the second-stage ultrafiltration, and a connecting pipe is connected to the same end of the first-stage ultrafiltration and the second-stage ultrafiltration, and a water pump is installed at the end of the first-stage ultrafiltration away from the connecting pipe, and a drain valve is installed at the end of the second-stage ultrafiltration away from the connecting pipe.

[0016] Furthermore, the water pump and the quick connector are movably connected, and the quick connector extends to the bottom side of the liquid accumulation pool through a pipeline.

[0017] The utility model provides a heavy metal contaminated soil purification device, which has the following beneficial effects:

[0018] 1. The utility model, wherein the soil contaminated with heavy metals to be treated is put into the interior of a stacking box, and according to the pollution factors contained in the soil, plants adapted to absorb the soil are planted in a plant box with a grid structure at the bottom, and then the plant boxes are stacked between the grids in sequence, and the plant boxes are in contact with the surface of the contaminated soil, so that the roots of the subsequent plants can penetrate into the contaminated soil layer at the bottom, so as to achieve the absorption treatment of heavy metal molecules by plants. In addition, through the use of a shunt pipe and a quick-connect valve, the externally supplied chemical reagent can be sprayed into the contaminated soil layer using a plurality of independent nozzles, and the heavy metal components in the soil are analyzed using the chemical reagent, and gradually penetrate and flow into the sedimentation tank assembly below with the reagent liquid. In this process, the activated carbon filter plate can pre-purify and filter the outflowing liquid to a certain extent, so as to ensure the subsequent treatment effect of the wastewater and avoid unnecessary environmental pollution. Under the use of the above-mentioned structures, the contaminated soil can be effectively purified step by step, and the heavy metal molecules contained therein can be removed. At the same time, the various structures can be detached from each other, so that the use of the equipment structure can ensure effective flexibility.

[0019] 2. The utility model, by arranging fixed blocks on the left and right sides of the stacking box, utilizes the fixed blocks to be sleeved in the second bracket, and uses the fixing bolts to screw in, so that the entire stacking box can be fixed above the liquid accumulation pool, and the receiving blocks arranged at the four diagonal positions of the inner wall of the liquid accumulation pool can provide effective structural support for the entire heavy metal absorption assembly to ensure the stability of the structure. In addition, since the entire spray assembly has a sliding connection structure with the first bracket through the slider, the vertical height of the entire spray assembly can be adjusted according to the height of the plants planted in the plant box to ensure the best spraying effect, and the structural flexibility of the entire device is also effectively guaranteed.

[0020] 3. The utility model provides quick connectors on both sides of the liquid accumulation pool. By utilizing the structural characteristics of the quick connectors, the purification component and the sedimentation tank component can be quickly structurally separated or connected. In addition, the liquid flowing out from the inside of the heavy metal absorption component will gather inside the liquid accumulation pool for precipitation. With the operation of the water pump, the waste liquid inside the liquid accumulation pool can be quickly extracted by using the quick connector, and the first-stage ultrafiltration and the second-stage ultrafiltration are used for effective purification and filtration to ensure that the discharged wastewater will not cause secondary pollution to the environment, thereby ensuring as much as possible that the device has good environmental protection and safety while treating the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a heavy metal contaminated soil purification device according to the utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of a heavy metal absorption component of a heavy metal contaminated soil purification device of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of a spray assembly of a heavy metal contaminated soil purification device of the utility model;

[0024] Figure 4 This is a three-dimensional structural schematic diagram of a sedimentation tank component of a heavy metal contaminated soil purification device of the utility model;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of a purification component of a heavy metal contaminated soil purification device of the utility model.

[0026] In the figure: 1. heavy metal absorption component; 101. stacking box; 102. fixing block; 103. grid; 104. slot; 105. plant box; 106. activated carbon filter plate; 2. spray component; 201. hanging bracket; 202. slider; 203. diverter pipe; 204. quick-connect valve; 205. independent nozzle; 3. sedimentation tank component; 301. liquid accumulation tank; 302. quick connector; 303. quick connector; 304. first bracket; 305. second bracket; 4. purification component; 401. first stage ultrafiltration; 402. second stage ultrafiltration; 403. fixing bracket; 404. connecting pipe; 405. water pump; 406. drain valve; 5. fixing bolts. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] like Figures 1 to 5As shown, a heavy metal contaminated soil purification device includes a heavy metal absorption component 1 and a spray component 2, the spray component 2 is mounted directly above the heavy metal absorption component 1, and a sedimentation tank component 3 is arranged at the bottom of the heavy metal absorption component 1, and purification components 4 are connected to the left and right sides of the sedimentation tank component 3, and a fixing bolt 5 is threadedly connected between the heavy metal absorption component 1 and the sedimentation tank component 3, the heavy metal absorption component 1 includes a stacking box 101, a fixing block 102, a grid 103, a slot 104, a plant box 105 and an activated carbon filter plate 106, the left and right sides of the stacking box 101 are connected to the fixing block 102, and the top opening of the stacking box 101 is provided with a grid 103, and the joint between the stacking box 101 and the grid 103 is provided with a slot 104, and the middle of the grid 103 A plant box 105 is placed in the space between the stacking boxes 101, and an activated carbon filter plate 106 is installed at the bottom opening of the stacking box 101. The bottom of the plant box 105 is arranged with a grid structure for interconnection with the interior of the stacking box 101, and the activated carbon filter plate 106 is installed in an embedded manner at the bottom of the stacking box 101. The heavy metal-contaminated soil to be treated is put into the interior of the stacking box 101. At the same time, according to the pollution factors contained in the soil, plants suitable for absorption are planted in the plant box 105 with a grid structure at the bottom, and then the plant boxes 105 are stacked between the grids 103 in sequence, and the plant boxes 105 are in contact with the contaminated soil surface, so that the roots of the subsequent plants can penetrate into the contaminated soil layer at the bottom, so as to achieve the absorption and treatment of heavy metal molecules by plants.

[0029] like Figures 1 to 5As shown, the spray assembly 2 includes a suspension frame 201, a slider 202, a shunt pipe 203, a quick-connect valve 204 and an independent nozzle 205. The sliders 202 are connected to the front and rear sides of the suspension frame 201, and the shunt pipe 203 is installed in the middle of the suspension frame 201, and a quick-connect valve 204 is provided on one side of the shunt pipe 203, and the bottom of the shunt pipe 203 is vertically connected to the independent nozzle 205, the independent nozzle 205 is arranged in an equidistant array structure, and the slider 202 is welded to the suspension frame 201, and the sedimentation tank assembly 3 includes a liquid accumulation tank 301, a quick connector 302, a receiving fastener 303, a first bracket 304 and a second bracket 305, the quick connectors 302 are installed on the left and right sides of the liquid accumulation tank 301, and receiving fasteners 303 are provided at the four diagonal positions of the inner wall of the liquid accumulation tank 301, and the first bracket 30 is vertically installed on the top of the front and rear sides of the liquid accumulation tank 301. 4, and the left and right sides of the liquid accumulation pool 301 are vertically installed with second brackets 305, the first bracket 304 and the fixed block 102 are threadedly connected to the fixing bolts 5, the slider 202 and the second bracket 305 are slidably connected, and the second bracket 305 vertically penetrates the middle of the fixed block 102, the receiving block 303 and the liquid accumulation pool 301 are fixedly connected, and the activated carbon filter plate 106 is horizontally placed on the top surface of the receiving block 303, and a plurality of independent nozzles 205 are used to spray into the contaminated soil layer, and chemical reagents are used to analyze the heavy metal components in the soil, and the reagent liquid gradually penetrates and flows into the sedimentation tank assembly 3 below. In addition, since the entire spray assembly 2 has a sliding connection structure between the slider 202 and the first bracket 304, the vertical height of the entire spray assembly 2 can be adjusted according to the height of the plants planted in the plant box 105.

[0030] like Figures 1 to 5 As shown, the purification component 4 includes a first-stage ultrafiltration 401, a second-stage ultrafiltration 402, a fixing frame 403, a connecting pipe 404, a water pump 405 and a drain valve 406. The second-stage ultrafiltration 402 is horizontally arranged below the first-stage ultrafiltration 401, and the fixing frame 403 is installed at the bottom of the second-stage ultrafiltration 402. The same end of the first-stage ultrafiltration 401 and the second-stage ultrafiltration 402 is connected to the connecting pipe 404, and the end of the first-stage ultrafiltration 401 away from the connecting pipe 404 is equipped with a water pump 405, and the second-stage ultrafiltration 402 is away from the connecting pipe 404. A drain valve 406 is installed at one end of 4, and the water pump 405 and the quick connector 302 are movably connected, and the quick connector 302 extends to the bottom side of the liquid accumulation pool 301 through a pipeline. By arranging quick connectors 302 on both sides of the liquid accumulation pool 301, the structural characteristics of the quick connector 302 can be used to quickly split or connect the purification component 4 and the sedimentation tank component 3, and the first-stage ultrafiltration 401 and the second-stage ultrafiltration 402 are used to effectively purify and filter, so as to ensure that the discharged wastewater will not cause secondary pollution to the environment.

[0031] In summary, if Figures 1 to 5 As shown, when the heavy metal contaminated soil purification equipment is used, the grid 103 is first taken out from the top opening of the stacking box 101, and then the heavy metal contaminated soil to be treated is put into the entire stacking box 101. At this time, the stacking box 101 is connected and fixed to the second bracket 305 on the side of the liquid accumulation pool 301 by using the fixing blocks 102 and fixing bolts 5 on both sides, and the activated carbon filter plate 106 is pressed between the bottom of the stacking box 101 itself and the top of the receiving block 303;

[0032] Then, plants of the type that are suitable for absorbing the pollution factors contained in the soil are planted in the plant box 105 with a grid structure at the bottom, and at the same time, it is ensured that the roots of the plants can smoothly pass through the bottom of the plant box 105;

[0033] Then, the grid 103 is inserted into the upper opening of the stacking box 101 with a slot 104 on the top of the inner wall, and then the plant boxes 105 planted with plants are arranged and placed in the grid 103, and the plant boxes 105 are made to fit the top surface of the soil, so that the roots of the subsequent plants can directly grow into the contaminated soil below that needs to be treated, and ensure that the heavy metals can be gradually absorbed;

[0034] Then, according to the height of the plants planted inside the plant box 105, the sliders 202 on both sides of the suspension frame 201 are used to make appropriate vertical adjustments along the surface of the first bracket 304, and the independent nozzle 205 is adjusted to a suitable height. Then, the quick-connect valve 204 on the side of the shunt pipe 203 is used to connect with the external chemical reagent supply equipment, and then the independent nozzle 205 is used to spray the reagent into the soil inside the stacking box 101. During this process, the reagent liquid gradually penetrates into the soil, and the heavy metal components in the soil are separated to form precipitated heavy metal ions or metal reagent complexes. As the reagent itself gradually flows downward and penetrates, it will pass through the activated carbon filter plate 106 in the process of flowing to the liquid accumulation pool 301. Since the activated carbon filter plate 106 can effectively remove residual chlorine, odor and organic pollutants in the water, and has a certain removal effect on some heavy metals such as lead and mercury, it plays a role in the initial filtration of wastewater.

[0035] As the wastewater accumulates inside the liquid accumulation pool 301, it is then connected to the inside of the liquid accumulation pool 301 through the quick connector 302 under the operation of the water pump 405, so that the wastewater inside the liquid accumulation pool 301 is gradually collected, and at the same time, the connecting pipe 404 is used to make the wastewater flow through the first-stage ultrafiltration 401 and the second-stage ultrafiltration 402 in turn, so that all harmful substances in the wastewater are filtered out and finally discharged from the drain valve 406 to the downstream equipment.

[0036] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A heavy metal contaminated soil purification device, comprising a heavy metal absorption component (1) and a spray component (2), characterized in that: A spray assembly (2) is arranged directly above the heavy metal absorption assembly (1), and a sedimentation tank assembly (3) is arranged at the bottom of the heavy metal absorption assembly (1), and purification assemblies (4) are connected to both left and right sides of the sedimentation tank assembly (3). A fixing bolt (5) is threadedly connected between the heavy metal absorption assembly (1) and the sedimentation tank assembly (3). The heavy metal absorption assembly (1) comprises a stacking box (101), a fixing block (102), a grid (103), a slot (104), and a plurality of fixing bolts (5) connected to the heavy metal absorption assembly (101). ), a plant box (105) and an activated carbon filter plate (106), the left and right sides of the stacking box (101) are connected with fixed blocks (102), and a grid (103) is arranged at the top opening of the stacking box (101), and a slot (104) is provided at the connection between the stacking box (101) and the grid (103), and a plant box (105) is placed in the middle of the grid (103), and an activated carbon filter plate (106) is installed at the bottom opening of the stacking box (101).

2. A heavy metal contaminated soil purification device according to claim 1, characterized in that: The bottom of the plant box (105) is arranged in a grid structure for communicating with the interior of the stacking box (101), and the activated carbon filter plate (106) is embedded and installed in the bottom of the stacking box (101).

3. The heavy metal contaminated soil purification equipment according to claim 1 is characterized in that: The spray assembly (2) comprises a suspension frame (201), a slider (202), a diverter pipe (203), a quick-connect valve (204) and an independent spray head (205); the slider (202) is connected to both the front and rear sides of the suspension frame (201); a diverter pipe (203) is installed in the middle of the suspension frame (201); a quick-connect valve (204) is provided on one side of the diverter pipe (203); and the independent spray head (205) is vertically connected to the bottom of the diverter pipe (203).

4. A heavy metal contaminated soil purification device according to claim 3, characterized in that: The independent nozzles (205) are arranged in an equidistant array structure, and the slider (202) and the suspension frame (201) are connected by welding.

5. The heavy metal contaminated soil purification equipment according to claim 3, characterized in that: The sedimentation tank assembly (3) comprises a liquid accumulation tank (301), a quick connector (302), a receiving bracket (303), a first bracket (304) and a second bracket (305), wherein the quick connector (302) is installed on both the left and right sides of the liquid accumulation tank (301), and the receiving bracket (303) is arranged at four diagonal positions of the inner wall of the liquid accumulation tank (301), and the first bracket (304) is vertically installed on the top of both the front and rear sides of the liquid accumulation tank (301), and the second bracket (305) is vertically installed on both the left and right sides of the liquid accumulation tank (301).

6. The heavy metal contaminated soil purification equipment according to claim 5, characterized in that: The first bracket (304) and the fixed block (102) are both threadedly connected to the fixing bolt (5), the sliding block (202) and the second bracket (305) are slidably connected, and the second bracket (305) vertically penetrates the middle of the fixed block (102), the receiving block (303) and the liquid accumulation pool (301) are fixedly connected, and the activated carbon filter plate (106) is horizontally placed on the top surface of the receiving block (303).

7. The heavy metal contaminated soil purification equipment according to claim 5, characterized in that: The purification component (4) comprises a first-stage ultrafiltration (401), a second-stage ultrafiltration (402), a fixing frame (403), a connecting pipe (404), a water pump (405) and a drain valve (406); the second-stage ultrafiltration (402) is horizontally arranged below the first-stage ultrafiltration (401), and the fixing frame (403) is installed at the bottom of the second-stage ultrafiltration (402); the first-stage ultrafiltration (401) and the second-stage ultrafiltration (402) are connected to the same end with the connecting pipe (404); the water pump (405) is installed at one end of the first-stage ultrafiltration (401) away from the connecting pipe (404); and the drain valve (406) is installed at one end of the second-stage ultrafiltration (402) away from the connecting pipe (404).

8. The heavy metal contaminated soil purification equipment according to claim 7, characterized in that: The water pump (405) and the quick connector (302) are movably connected, and the quick connector (302) extends to the bottom side of the liquid accumulation pool (301) through a pipeline.

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