Device for removing heavy metal ions in soil

Abstract

The invention discloses a device for removing heavy metal ions in soil, and belongs to the technical field of soil governing.The device sequentially comprises a feeding unit, a material crushing unit, an extrusion unit, a filtering unit, a stirring unit and a precipitation filter pressing unit, the feeding unit is arranged on one side of the material crushing unit, and the extrusion unit is arranged on the other side of the material crushing unit; the other side of the crushing unit is communicated and connected with one side of the extrusion unit, the other side of the extrusion unit is sequentially communicated and connected with the filtering unit and the stirring unit, and the stirring unit is communicated and connected with the precipitation filter pressing unit. According to the device for removing the heavy metal ions in the soil, the units of the device are linked and matched with one another, the purification effect and the working efficiency of the heavy metal contaminated soil are improved, no wastewater is discharged in the whole treatment process, the environment-friendly benefit is achieved, and the device is suitable for popularization and application. The method has the advantages of high efficiency, rapidness, environmental friendliness and easiness in engineering.

Description

A device for removing heavy metal ions from soil Technical Field

[0001] This invention relates to the field of soil remediation technology, and in particular to a device for removing heavy metal ions from soil. Background Technology

[0002] Currently, heavy metal pollution in my country's soil is becoming increasingly serious. With social development and inadequate production management, the indiscriminate discharge of waste has led to severe heavy metal pollution in the soil. Heavy metal pollution in soil damages the surrounding ecological environment and threatens human health. Therefore, the purification and remediation of heavy metal-contaminated soil has become a major scientific and livelihood issue of great concern to the public, and a task that urgently needs to be tackled by all sectors of society.

[0003] Currently, numerous methods for remediating soil heavy metal pollution are being reported. These methods mainly include immobilization (chemical leaching, phytoresorption, biosorption) and electrokinetic remediation. Among the many patent applications related to soil heavy metal pollution remediation technologies, the main innovations include the invention of new chemical leaching agents, new chemical leaching methods, new electrokinetic remediation technologies, and the discovery of new plant varieties and biological species. However, existing soil treatment devices have the following problems in practical use: a. The overall soil purification efficiency of the treatment device is relatively slow, requiring workers to pour soil from above, thus increasing their workload; b. The treatment device cannot fully mix the chemical solution with the soil during purification; c. The treatment device is inconvenient for thoroughly breaking up the soil, resulting in incomplete treatment of clumped soil. Summary of the Invention

[0004] The purpose of this invention is to provide a device for removing heavy metal ions from soil. The various units of the device are interconnected and cooperate with each other, which improves the purification effect and working efficiency of heavy metal contaminated soil. Moreover, there is no wastewater discharge during the entire treatment process, achieving environmentally friendly benefits. It has the advantages of high efficiency, speed, environmental friendliness and ease of engineering.

[0005] To achieve the above objectives, the present invention provides an apparatus for removing heavy metal ions from soil, comprising, in sequence, a feeding unit, a crushing unit, an extrusion unit, a filtration unit, a stirring unit, and a sedimentation and filtration unit. The feeding unit is disposed on one side of the crushing unit, and the other side of the crushing unit is connected to one side of the extrusion unit. The other side of the extrusion unit is sequentially connected to the filtration unit and the stirring unit, and the stirring unit is connected to the sedimentation and filtration unit.

[0006] Preferably, the feeding unit includes a feeding bracket, which is a vertical triangular shape with a hopper slidably connected to its hypotenuse, and a rotating shaft is provided between the hopper and the top of the feeding bracket.

[0007] Preferably, the crushing unit includes a hopper with an open top and a servo motor mounted on a support at its bottom. The output end of the servo motor is connected to a longitudinal transmission belt via a rotating shaft. The upper part of the transmission belt is connected to one end of a rotating shaft, and the other end of the rotating shaft is located inside the hopper and hinged to one side of the hopper.

[0008] Preferably, the outer surface of the rotating shaft is axially and uniformly provided with crushing rollers, and the crushing rollers are slidably connected to the rotating shaft.

[0009] Preferably, a discharge port is provided at the bottom of one end of the hopper, and the discharge port is connected to one end of the extrusion unit. The extrusion unit includes an extruder, which is inclined. A drive assembly is provided at the lower end of the extruder, and the upper part of the lower end is connected to the discharge port over a large area. A connecting pipe is provided at the higher end of the extruder.

[0010] Preferably, the connecting pipe has a 90° bend structure and is vertically connected to the filter unit. The filter unit includes a filter bucket, which has an inverted trapezoidal shape and a screen is fixedly installed inside it. A discharge port is correspondingly provided between the screen and the bottom of the filter bucket.

[0011] Preferably, one end of the discharge port is connected to the stirring unit, the stirring unit includes a stirring box, the upper part of the stirring box is connected to the discharge port, and a stirring paddle is provided inside the stirring box. The stirring paddle is evenly arranged on the stirring shaft inside the stirring box, and the stirring shaft is connected to a drive motor located on the outside of one side of the stirring box.

[0012] Preferably, a blower and a liquid injection port are respectively provided on both sides of the connection between the mixing unit and the discharge port. The blower and the liquid injection port are both connected to the mixing box. The blower is used to blow air to the mixing unit for disinfection, and the liquid injection port is used to inject disinfectant into the mixing unit.

[0013] Preferably, a discharge pipe is also provided on the other side of the stirring unit, and the discharge pipe is inclined to one side of the stirring unit with an inclination angle of 60°.

[0014] Preferably, the other end of the discharge pipe is connected to the sedimentation and filtration unit, which consists of a sedimentation tank and a filter press.

[0015] Therefore, the present invention employs the above-mentioned device for removing heavy metal ions from soil. The various units of the device are interconnected and cooperate with each other, which improves the purification effect and working efficiency of heavy metal contaminated soil. Moreover, there is no wastewater discharge during the entire treatment process, achieving environmentally friendly benefits. It has the advantages of high efficiency, speed, environmental friendliness and ease of engineering.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of the device for removing heavy metal ions from soil according to the present invention.

[0018] Figure Labels

[0019] 1. Feeding unit; 11. Feeding bracket; 12. Hopper; 13. Rotating shaft; 2. Crushing unit; 21. Hopper; 22. Servo motor; 23. Drive belt; 24. Rotating shaft; 25. Crushing roller cutter; 26. Discharge port; 3. Extrusion unit; 31. Extruder; 32. Drive assembly; 33. Connecting pipe; 4. Filtration unit; 41. Filter hopper; 42. Screen; 43. Discharge port; 5. Mixing unit; 51. Mixing paddle; 52. Drive motor; 53. Blower; 54. Liquid injection port; 55. Discharge pipe; 6. Sedimentation and filtration unit. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Example 1

[0023] Referring to Figure 1, the present invention provides an apparatus for removing heavy metal ions from soil, comprising, in sequence:

[0024] Feeding unit 1 is used to transport soil contaminated with heavy metals;

[0025] Crushing unit 2 is used to break up clumps of soil and dead branches and leaves in the soil;

[0026] Extrusion unit 3 is used to extrude the crushed soil sample;

[0027] Filter unit 4 is used to filter residues in soil samples;

[0028] The stirring unit 5 is used to stir the soil sample and ensure that the soil contaminated with heavy metals is in contact with the disinfectant over a large area.

[0029] The sedimentation and filtration unit 6 is used to further treat harmful substances in the soil to obtain organic soil.

[0030] The feeding unit 1 is located on one side of the crushing unit 2. The other side of the crushing unit 2 is connected to one side of the extrusion unit 3. The other side of the extrusion unit 3 is connected to the filtration unit 4 and the stirring unit 5 in sequence. The stirring unit 5 is connected to the sedimentation and filtration unit 6.

[0031] In the above description, the feeding unit 1 includes a feeding bracket 11, which is a vertical triangular shape to provide support strength. A hopper 12 is slidably connected to its hypotenuse. A rotating shaft 13 is provided between the hopper 12 and the top of the feeding bracket 11 for pouring soil samples from the hopper 12 into the crushing unit 2. A conveyor belt is provided on the inner side of the feeding bracket 11 and is driven by an external motor to ensure that the hopper 12 moves linearly on the feeding bracket 11. This is a conventional driving method for those skilled in the art and will not be described in detail here.

[0032] Secondly, the crushing unit 2 includes a hopper 21 with an open top. A servo motor 22 is mounted on a support at the bottom of the hopper 21. The output end of the servo motor 22 is connected to a longitudinal transmission belt 23 via a rotating shaft 13. The upper part of the transmission belt 23 is connected to one end of a rotating shaft 24, the other end of which is located inside the hopper 21 and hinged to one side. Crushing rollers 25 are axially and evenly arranged on the outer surface of the rotating shaft 24, and these rollers 25 are slidably connected to the shaft 24. Driven by the servo motor 22, the transmission belt 23 is controlled to rotate the shaft 24, thereby ensuring complete soil crushing.

[0033] Additionally, a discharge port 26 is provided at the bottom of one end of the hopper 21. The discharge port 26 is connected to one end of the extrusion unit 3. The extrusion unit 3 includes an extruder 31, which is inclined. A drive assembly 32 is provided at the lower end of the extruder 31, and the upper part of the lower end is connected to the discharge port 26 over a large area. A connecting pipe 33 is provided at the higher end of the extruder 31. The connecting pipe 33 has a 90° bend and is vertically connected to a filter unit 4. The filter unit 4 includes a filter hopper 41, which has an inverted trapezoidal shape. A screen 42 is fixedly installed inside the filter hopper 41, and a discharge port 43 is provided between the screen 42 and the bottom of the filter hopper 41. The crushed soil sample is extruded by the extruder 31 and then screened by the filter unit 4 to achieve soil filtration and screening.

[0034] Secondly, a mixing unit 5 is connected to one end of the discharge port 43. The mixing unit 5 includes a mixing tank, the top of which is connected to the discharge port 43. Inside the mixing tank, mixing paddles 51 are evenly distributed on a mixing shaft inside the mixing tank. The mixing shaft is connected to a drive motor 52 located on the outside of one side of the mixing tank. A blower 53 and a liquid injection port 54 are respectively provided on both sides of the connection between the mixing unit 5 and the discharge port 43. Both the blower 53 and the liquid injection port 54 are connected to the mixing tank. The blower 53 is used to blow air into the mixing unit 5 for disinfection, and the liquid injection port 54 is used to inject disinfectant into the mixing unit 5. Additionally, a discharge pipe 55 is provided on the other side of the mixing unit 5. The discharge pipe 55 is inclined to one side of the mixing unit 5 at an angle of 60°. The drive motor 52 drives the mixing paddles 51 to rotate, ensuring that the soil inside the mixing tank is evenly contacted with the disinfectant. The blower 53 circulates air into the mixing tank, further ensuring the treatment effect of heavy metals in the soil through this air-blowing disinfection technology. The other end of the discharge pipe 55 is connected to the sedimentation and filter press unit 6, which consists of a sedimentation tank and a filter press. Through sedimentation in the sedimentation tank and filtration in the filter press, harmful substances in the soil are removed, thereby obtaining organic soil.

[0035] Therefore, the present invention employs the above-mentioned device for removing heavy metal ions from soil. The various units of the device are interconnected and cooperate with each other, which improves the purification effect and working efficiency of heavy metal contaminated soil. Moreover, there is no wastewater discharge during the entire treatment process, achieving environmentally friendly benefits. It has the advantages of high efficiency, speed, environmental friendliness and ease of engineering.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for removing heavy metal ions from soil, characterized in that: The system includes, in sequence, a feeding unit, a crushing unit, an extrusion unit, a filtration unit, a stirring unit, and a sedimentation and filtration unit. The feeding unit is located on one side of the crushing unit, and the other side of the crushing unit is connected to one side of the extrusion unit. The other side of the extrusion unit is connected in sequence to the filtration unit and the stirring unit, and the stirring unit is connected to the sedimentation and filtration unit.

2. The device for removing heavy metal ions from soil according to claim 1, characterized in that: The feeding unit includes a feeding bracket, which is a vertical triangular shape with a hopper slidably connected to its hypotenuse. A rotating shaft is provided between the hopper and the top of the feeding bracket.

3. The device for removing heavy metal ions from soil according to claim 1, characterized in that: The crushing unit includes a hopper with an open top. A servo motor is installed at the bottom support. The output end of the servo motor is connected to a longitudinal transmission belt via a rotating shaft. The upper part of the transmission belt is connected to one end of the rotating shaft. The other end of the rotating shaft is located inside the hopper and is hinged to one side of the hopper.

4. The device for removing heavy metal ions from soil according to claim 3, characterized in that: The outer surface of the rotating shaft is axially and uniformly provided with crushing rollers, which are slidably connected to the rotating shaft.

5. The device for removing heavy metal ions from soil according to claim 3, characterized in that: The bottom of one end of the hopper is provided with a discharge port, which is connected to one end of the extrusion unit. The extrusion unit includes an extruder, which is inclined. A drive component is provided at the lower end of the extruder, and the upper part of the lower end is connected to the discharge port over a large area. A connecting pipe is provided at the higher end of the extruder.

6. The apparatus for removing heavy metal ions from soil according to claim 5, characterized in that: The connecting pipe has a 90° bend structure and is vertically connected to the filter unit. The filter unit includes a filter bucket, which has an inverted trapezoidal shape and a screen is fixedly installed inside. A discharge port is provided between the screen and the bottom of the filter bucket.

7. The apparatus for removing heavy metal ions from soil according to claim 6, characterized in that: One end of the discharge port is connected to the stirring unit. The stirring unit includes a stirring box, the top of which is connected to the discharge port. A stirring paddle is provided inside the stirring box. The stirring paddle is evenly distributed on a stirring shaft inside the stirring box. The stirring shaft is connected to a drive motor located on the outside of one side of the stirring box.

8. The apparatus for removing heavy metal ions from soil according to claim 7, characterized in that: A blower and a liquid injection port are respectively provided on both sides of the connection between the mixing unit and the discharge port. The blower and the liquid injection port are both connected to the mixing box. The blower is used to blow air to the mixing unit for disinfection, and the liquid injection port is used to inject disinfectant into the mixing unit.

9. The apparatus for removing heavy metal ions from soil according to claim 8, characterized in that: A discharge pipe is also provided on the other side of the stirring unit. The discharge pipe is inclined to one side of the stirring unit at an angle of 60°.

10. The apparatus for removing heavy metal ions from soil according to claim 9, characterized in that: The other end of the discharge pipe is connected to the sedimentation and filtration unit, which consists of a sedimentation tank and a filter press.

Images