Heavy metal soil phytoremediation device

Abstract

The utility model discloses a heavy metal soil phytoremediation device which comprises a remediation box main body and a cover plate, the cover plate is located at the top of the remediation box main body, a watering mechanism is arranged at the top of the cover plate, a through hole is formed in the bottom of the remediation box main body, and an auxiliary assembly is arranged on the side portion of the remediation box main body. A bottom net and two fan-shaped plates are fixedly connected into the repairing box body, and a fixing block is arranged between the two fan-shaped plates. According to the device, plants can be watered according to needs through the arranged watering mechanism, nutrient solutions can be injected into the plants through the injection assembly, the vitality of the plants is enhanced, microbial solutions can be injected into metal soil through the auxiliary assembly, the plants are assisted in being repaired, and the repairing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plant restoration, in particular to a heavy metal soil plant restoration device. Background Art

[0002] Heavy metal contamination of soil can lead to degradation of soil fertility, reducing agricultural yields and quality. Therefore, remediating heavy metals in soil is a key research topic in environmental protection. A variety of plant species, including woody plants such as mulberry, willow, and poplar, are widely used in phytoremediation of heavy metal-contaminated soils. These plants primarily reduce heavy metal levels in the soil by absorbing, enriching, and transforming heavy metals.

[0003] Chinese Patent Publication No. CN217964083U discloses a phytoremediation device for heavy metal-contaminated soil. This device involves planting plants in the soil, which then absorb the heavy metals through the plant cycle to achieve soil remediation. However, this technical solution relies solely on plants for soil remediation, resulting in slow progress. Furthermore, the plants are prone to withering and becoming susceptible to pests and diseases during the remediation process, further reducing remediation efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a heavy metal soil plant remediation device, which can effectively solve the problems of slow remediation efficiency of polluted soil and easy withering of plants.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A heavy metal soil plant remediation device comprises a remediation box body and a cover plate, wherein the cover plate is located on the top of the remediation box body, a sprinkler mechanism is provided on the top of the cover plate, a through hole is provided on the bottom of the remediation box body, an auxiliary component is provided on the side of the remediation box body, a bottom net and two fan-shaped plates are fixedly connected in the remediation box body, a fixed block is provided between the two fan-shaped plates, and a motor 1 is fixedly provided on the upper inner wall of the fixed block, a rotating column is connected to the output shaft of the motor 1, and the rotating column is rotatably connected to the bottom net, a cutting knife is fixedly connected to the bottom end of the rotating column, and the cutting knife is located in the bottom net.

[0007] Preferably, the auxiliary component includes a microbial liquid tank, and the biological liquid tank is located on one side of the repair tank body, a feed port is provided on one side of the microbial liquid tank, a pipeline is fixedly installed at the bottom of the microbial liquid tank, a discharge port is provided at the bottom of the microbial liquid tank, and the discharge port is located directly above the pipeline.

[0008] Preferably, a discharge tray is fixedly connected inside the pipeline, and a plurality of discharge ports are provided on the discharge tray. A sealing plate is slidably connected to the upper part of the discharge tray, and the top of the sealing plate is fixedly connected to the bottom end of the rotating shaft. The top end of the rotating shaft passes through the inner cavity of the microbial liquid box to the top of the microbial liquid box, and the rotating shaft is rotatably connected to the microbial liquid box.

[0009] Preferably, the discharge tray is circular in shape, the sealing plate is in the shape of two sectors, and the portion of the discharge tray located at the bottom side of the sealing plate is not provided with a discharge port.

[0010] Preferably, one side or both sides of the repair box body are further provided with an injection assembly for injecting nutrient solution into the interior of the plant stem.

[0011] The injection assembly includes a hydraulic pump and a mounting bracket, and the hydraulic pump is located on one side of the repair box body, the output end of the hydraulic pump passes through one side of the repair box body and is fixedly connected to the mounting bracket, a second motor and a box body are fixedly provided on the upper part of the mounting bracket, a water pump 1 is fixedly provided in the box body, a drill pipe is rotatably connected to the side of the box body close to the fixed block, and the drill pipe passes through the box body and is rotatably connected to the water outlet end of the water pump 1; the drill pipe is a hollow structure, and a plurality of water outlets are provided on the drill pipe.

[0012] Preferably, a pulley 1 and a pulley 2 are fixedly mounted on the output shaft of the second motor and the drill pipe respectively, and the pulley 1 and the pulley 2 are connected to each other via a same belt.

[0013] Preferably, the sprinkler mechanism includes a water tank, and the water tank is located on the top of the cover plate, a water inlet is provided on one side of the water tank, a water pump 2 is fixedly installed on the lower inner wall of the water tank, a nozzle is fixedly provided on the upper inner wall of the repair box body, and the nozzle passes through the top plate of the cover plate and is fixedly connected to the water outlet end of the water pump 2.

[0014] Preferably, a lighting lamp is fixedly connected to the upper inner wall of the repair box body, and a plurality of ventilation holes are fixedly provided on the cover plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] While the utility model repairs heavy metal pollution through plants, it can also inject microbial liquid into the soil containing heavy metals so that the plants and the microbial liquid cooperate with each other to improve the efficiency of the repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the heavy metal soil phytoremediation device proposed in the utility model;

[0018] Figure 2This is a schematic diagram of the cross-sectional three-dimensional structure of the heavy metal soil phytoremediation device proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the auxiliary components of the heavy metal soil phytoremediation device proposed in the present utility model;

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the three-dimensional structure of part A;

[0021] Figure 5 For this utility model Figure 2 Schematic diagram of the three-dimensional structure of part B.

[0022] In the figure: 1. Repair box body; 2. Cover plate; 3. Sprinkler mechanism; 31. Water tank; 32. Water pump 2; 33. Nozzle; 34. Air vent; 35. Lighting lamp; 4. Injection assembly; 41. Hydraulic pump; 42. Mounting frame; 43. Box body; 44. Drill pipe; 45. Water outlet; 46. Motor 2; 47. Pulley 1; 48. Pulley 2; 49. Belt; 5. Auxiliary assembly; 51. Bacteria liquid tank; 52. Pipeline; 53. Discharge tray; 54. Discharge port; 55. Sealing plate; 56. Rotating shaft; 6. Through hole; 7. Fan plate; 8. Bottom net; 9. Motor 1; 10. Rotating column; 11. Cutting knife; 12. Fixing block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Example 1:

[0025] like Figure 1 、 2 As shown, this embodiment provides a heavy metal soil phytoremediation device, comprising a remediation box body 1 and a cover 2. The cover 2 is detachably connected to the top of the remediation box body 1. Opening the cover 2 allows the planting of special plants with strong heavy metal accumulation capabilities within the remediation box body 1. In this embodiment, the plants are preferably woody plants, including willows and mulberry trees. It should be noted that the heavy metal soil phytoremediation device can be used in heavy metal soil phytoremediation experiments.

[0026] Furthermore, a sprinkler mechanism 3 is provided on the top of the cover plate 2, which can water the plants. Through holes 6 are fixed on the four sides of the bottom of the repair box body 1, and an auxiliary component 5 is provided on one or both sides of the repair box body 1. The auxiliary component 5 is used to inject microbial liquid into the heavy metal soil, and use microbial strains to assist plants in soil repair, thereby improving the efficiency of repair.

[0027] Furthermore, a bottom net 8 and two fan-shaped plates 7 are fixedly connected in the repair box body 1, and a cultivation space is formed between the bottom net 8 and the fan-shaped plates 7. The cultivation space is used to plant and cultivate plants, and a fixed block 12 is provided between the two fan-shaped plates 7, and a motor 9 is fixedly provided on the upper inner wall of the fixed block 12. A rotating column 10 is fixedly connected to the output shaft of the motor 9, and the rotating column 10 is rotatably connected to the bottom net 8. A cutting knife 11 is fixedly connected to the bottom end of the rotating column 10, and the cutting knife 11 is located in the bottom net 8. The bottom net 8 is used to isolate heavy metal soil and the cultivation space.

[0028] Special plants with strong heavy metal accumulation ability are planted in the cultivation space, so that the roots of the plants can pass through the bottom net 8 and the through holes 6 and directly contact the heavy metal soil below, thereby purifying the metal-containing soil.

[0029] Start the motor 9, and the output shaft of the motor 9 can drive the rotating column 10 to rotate, and the rotating column 10 further drives the cutting knife 11 to rotate, cutting the root system of the plant, and then the device can be moved as a whole to the next repair area.

[0030] Example 2:

[0031] The only difference between this embodiment and embodiment 1 is that Figure 2 As shown, the sprinkler mechanism 3 includes a water tank 31, and the water tank 31 is located on the top of the cover plate 2. A water inlet is provided on one side of the water tank 31, through which water can be injected into the water tank 31. A second water pump 32 is fixedly installed on the lower inner wall of the water tank 31, and a nozzle 33 is fixedly provided on the upper inner wall of the repair box body 1. The nozzle 33 penetrates the top plate of the cover plate 2 and is fixedly connected to the water outlet end of the second water pump 32. When the second water pump 32 is started, the water in the water tank 31 can be sprinkled out through the nozzle 33 to water the plants.

[0032] Further, such as Figure 2 As shown, a lighting lamp 35 is fixedly connected to the upper inner wall of the repair box body 1, and a plurality of air holes 34 are fixedly provided on the cover plate 2. The lighting lamp 35 can provide light for plant growth, and the air holes 34 can be ventilated to promote plant growth.

[0033] like Figure 3 As shown, the discharge tray 53 is circular, the sealing plate 55 is in the shape of two sectors, and the portion of the discharge tray 53 located at the bottom side of the sealing plate 55 is not provided with a discharge opening 54. Since the discharge tray 53 is circular and the sealing plate 55 is in the shape of two sectors, the sealing plate 55 can cover the discharge opening 54 on the discharge tray 53.

[0034] Example 3:

[0035] The difference between this embodiment and embodiment 1 or 2 is that Figure 3 、4 As shown, the auxiliary component 5 includes a microbial liquid tank 51, and the microbial liquid tank 51 is located on one side of the repair box body 1. A feed port is provided on one side of the microbial liquid tank 51, and microbial liquid can be poured into the microbial liquid tank 51 through the feed port. A pipe 52 is fixedly installed at the bottom of the microbial liquid tank 51, and a discharge port is provided at the bottom of the microbial liquid tank 51, and the discharge port is located directly above the pipe 52.

[0036] Thus, the microbial liquid can be injected into the heavy metal soil through the pipeline 52, and cooperated with the plants to enhance the plants' ability to adsorb heavy metal elements in the soil, thereby achieving the purpose of quickly repairing the heavy metal contaminated soil.

[0037] The bacterial species of the microbial liquid include one or more species of Bacillus and fungi, wherein the Bacillus species specifically include Bacillus megaterium de Bary, Bacillus One or two of Bacillus mucilaginosus Krassilnikov, Bacillus subtilis and Bacillus amyloliquefaciens, among which Bacillus megaterium and Bacillus mucilaginosus both have the ability to promote the growth of hyperaccumulator plants (such as Indian mustard), and can also significantly enhance the plant's ability to absorb heavy metals such as cadmium (Cd), lead (Pb), and zinc (Zn) in the soil; Bacillus subtilis and Bacillus amyloliquefaciens can produce poly-gamma-glutamic acid (γ-PGA), which is a highly efficient biosorption material that can fix heavy metal ions in the soil to promote plants to absorb soil heavy metals; the fungal species include Aspergillus niger, which can also significantly promote plants' absorption of soil Cd, Pb, and Zn.

[0038] After the above-mentioned microbial liquid is injected into the soil, the bacteria can decompose organic matter, promote and accelerate plant growth, and reduce the occurrence of plant diseases. At the same time, as mentioned above, the above-mentioned bacteria also have the corresponding function of assisting plants in absorbing heavy metals, so they can cooperate with plants to accelerate the efficiency of heavy metal soil remediation.

[0039] Furthermore, a discharge tray 53 is fixedly connected to the pipe 52, and a plurality of discharge ports 54 are provided on the discharge tray 53. A sealing plate 55 is slidably connected to the upper part of the discharge tray 53, and the top of the sealing plate 55 is fixedly connected to the bottom end of the rotating shaft 56. The top end of the rotating shaft 56 passes through the inner cavity of the microbial liquid tank 51 to the top of the microbial liquid tank 51, and the rotating shaft 56 is rotatably connected to the microbial liquid tank 51.

[0040] When in use, the rotating shaft 56 is rotated, and the rotating shaft 56 drives the sealing plate 55 to rotate. Figure 3 The portion of the discharge tray 53 covered by the sealing plate 55 is not provided with a discharge port 54. Therefore, the rotation of the rotating shaft 56 can drive the sealing plate 55 to rotate and adjust the discharge speed of the microbial liquid.

[0041] Example 4:

[0042] The only difference between this embodiment and any one of embodiments 1 to 3 is that Figure 5 As shown, an injection component 4 is also provided on one or both sides of the repair box body 1. The injection component 4 is used to inject the nutrient solution into the plant stem to prevent the nutrient solution from being contaminated by heavy metal soil due to direct watering, resulting in waste.

[0043] Specifically, the injection assembly 4 includes a hydraulic pump 41 and a mounting bracket 42, and the hydraulic pump 41 is located on one side of the repair box body 1. The output end of the hydraulic pump 41 passes through one side of the repair box body 1 and is fixedly connected to the mounting bracket 42. A motor 2 46 and a box body 43 are fixedly provided on the upper part of the mounting bracket 42. A water pump 1 is fixedly provided in the box body 43. A drill pipe 44 is rotatably connected to the side of the box body 43 close to the fixed block 12. The tip of the drill pipe 44 can drill holes on the surface of the plant, and the drill pipe 44 passes through the box body 43 and is rotatably connected to the water outlet end of the water pump 1. At the same time, the drill pipe 44 is a hollow structure, and a plurality of water outlets 45 are opened on the drill pipe 44.

[0044] A pulley 1 47 and a pulley 2 48 are fixedly mounted on the output shaft of the motor 2 46 and the drill pipe 44 , respectively. The pulley 1 47 and the pulley 2 48 are connected to each other via a belt 49 .

[0045] Start the hydraulic pump 41 and the second motor 46. The hydraulic pump 41 drives the mounting frame 42, the box 43, the drill pipe 44, the water outlet 45, the second motor 46, the pulley 1 47, the water pump 1, the pulley 2 48 and the belt 49 to move forward. At the same time, the output shaft of the second motor 46 drives the drill pipe 44 to rotate, so that the front tip of the drill pipe can be inserted into the plant stem and stay there. Then start the first water pump to inject the nutrient solution into the plant through the water outlet 45, which is convenient for the plant to absorb and improve the survival rate of the plant. At the same time, it prevents direct watering around the plant and pollution by harmful substances in the surrounding soil.

[0046] It should be noted that the injection assembly 4 is suitable for woody plants with stem diameters growing within a predetermined range, such as woody plants with stem diameters of 3 cm or 5 cm or more. At this time, the tip of the drill tube 44 can be normally inserted into the stem, and the length and diameter of the drill tube 44 can be set according to the type of plant and the diameter of the plant stem. For example, in this embodiment, the length of the drill tube 44 is 5-10 cm, the diameter is 0.1 cm-1 cm, etc., and the length of the part of the front tip of the drill tube 44 inserted into the plant stem is 40-60% of the diameter of the plant stem. The insertion length can be achieved by controlling the distance that the hydraulic pump 41 drives the motor 2 46 and the drill tube 44 to move. Since the diameter of the drill tube 44 is much smaller than the stem diameter, the borehole caused by the injection can heal in a short time, so it will not cause damage to the plant and will not affect the next injection.

[0047] The working principle of the present invention is as follows: pick up the cover plate 2, plant special plants with strong heavy metal enrichment ability in the cultivation space, then start the water pump 2 32, use the sprinkler 33 to water the plants, and use the lighting lamp 35 to provide light. After a period of time, the roots of the plants will pass through the bottom net 8 and the through hole 6, and fully contact the heavy metal soil. Then, through the auxiliary component 5, the microbial liquid can be injected into the soil, so that it cooperates with the plants and accelerates the efficiency of repair.

[0048] When the plant is in poor condition, nutrient solution can be injected into the interior of the plant through the injection component 4 to promote plant growth. After the repair is completed, start the motor 9 to drive the rotating column 10 to rotate, and further drive the cutting knife 11 to rotate to cut off the root system of the plant, and then move the entire device to the next repair area for use.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A heavy metal soil phytoremediation device, comprising a remediation box body (1) and a cover plate (2), characterized in that: The cover plate (2) is located on the top of the repair box body (1), a watering mechanism (3) is provided on the top of the cover plate (2), a through hole (6) is provided on the bottom of the repair box body (1), an auxiliary component (5) is provided on the side of the repair box body (1), a bottom net (8) and two fan-shaped plates (7) are fixedly connected in the repair box body (1), a fixing block (12) is provided between the two fan-shaped plates (7), and a motor (9) is fixedly provided on the upper inner wall of the fixing block (12), a rotating column (10) is connected to the output shaft of the motor (9), and the rotating column (10) is rotatably connected to the bottom net (8).

2. The heavy metal soil phytoremediation device according to claim 1, characterized in that: The auxiliary component (5) includes a microbial liquid tank (51), and the microbial liquid tank (51) is located on one side of the repair box body (1). A feed port is provided on one side of the microbial liquid tank (51), a pipe (52) is fixedly installed at the bottom of the microbial liquid tank (51), and a discharge port is provided at the bottom of the microbial liquid tank (51), and the discharge port is located directly above the pipe (52).

3. The heavy metal soil phytoremediation device according to claim 2, characterized in that: A discharge tray (53) is fixedly connected to the pipe (52), and a plurality of discharge ports (54) are provided on the discharge tray (53). A sealing plate (55) is slidably connected to the upper portion of the discharge tray (53), and the top end of the sealing plate (55) is fixedly connected to the bottom end of a rotating shaft (56). The top end of the rotating shaft (56) passes through the inner cavity of the microbial liquid tank (51) to the top of the microbial liquid tank (51), and the rotating shaft (56) is rotatably connected to the microbial liquid tank (51).

4. The heavy metal soil phytoremediation device according to claim 3, characterized in that: The discharge tray (53) is circular in shape, the sealing plate (55) is in the shape of two sectors, and the portion of the discharge tray (53) located at the bottom side of the sealing plate (55) is not provided with a discharge port (54).

5. The heavy metal soil phytoremediation device according to claim 1, characterized in that: One side or both sides of the repair box body (1) are also provided with an injection assembly (4) for injecting nutrient solution into the interior of the plant stem.

6. The heavy metal soil phytoremediation device according to claim 5, characterized in that: The injection assembly (4) includes a hydraulic pump (41) and a mounting frame (42), and the hydraulic pump (41) is located on one side of the repair box body (1), the output end of the hydraulic pump (41) passes through one side of the repair box body (1) and is fixedly connected to the mounting frame (42), a second motor (46) and a box body (43) are fixedly provided on the upper part of the mounting frame (42), a water pump 1 is fixedly provided in the box body (43), a drill pipe (44) is rotatably connected to the side of the box body (43) close to the fixed block (12), and the drill pipe (44) passes through the box body (43) and is rotatably connected to the water outlet end of the water pump 1; the drill pipe (44) is a hollow structure, and a plurality of water outlets (45) are opened on the drill pipe (44).

7. The heavy metal soil phytoremediation device according to claim 6, characterized in that: The output shaft of the motor 2 (46) and the drill pipe (44) are respectively fixedly mounted with a pulley 1 (47) and a pulley 2 (48); the pulley 1 (47) and the pulley 2 (48) are connected to each other via a same belt (49).

8. The heavy metal soil phytoremediation device according to claim 1, characterized in that: The water sprinkling mechanism (3) comprises a water tank (31), and the water tank (31) is located on the top of the cover plate (2). A water inlet is provided on one side of the water tank (31). A water pump 2 (32) is fixedly installed on the lower inner wall of the water tank (31). A nozzle (33) is fixedly provided on the upper inner wall of the repair box body (1), and the nozzle (33) passes through the top plate of the cover plate (2) and is fixedly connected to the water outlet end of the water pump 2 (32).

9. The heavy metal soil phytoremediation device according to claim 1, characterized in that: The upper inner wall of the repair box body (1) is fixedly connected with a lighting lamp (35), and the cover plate (2) is fixedly provided with a plurality of air holes (34).

10. The heavy metal soil phytoremediation device according to claim 1, characterized in that: The bottom end of the rotating column (10) is fixedly connected with a cutting knife (11), and the cutting knife (11) is located in the bottom net (8).

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