Electric remediation device for cadmium-contaminated soil activated by citric acid

Abstract

The utility model relates to the technical field of electrokinetic remediation of soil, in particular to an electrokinetic remediation device for cadmium-contaminated soil activated by citric acid. According to the technical scheme, a throwing assembly comprises a lifting conveying belt, two lower spraying pipes and two upper spraying pipes, the inner wall of a reaction bin is rotationally connected with the lifting conveying belt, the ends of the lower spraying pipes and the ends of the upper spraying pipes are fixedly connected with the reaction bin, and water spraying openings of the lower spraying pipes and the water spraying openings of the upper spraying pipes face soil; and the lower spray pipe and the upper spray pipe are both communicated with the medicament box. Soil is thrown out to perform parabolic motion after being crushed by the crushing device, the soil with different gravities is subjected to different inertias, so that the soil is thrown in the air to be separated from different granular soil, the lower spray pipe and the upper spray pipe are arranged on the two sides of a soil moving track, and citric acid is atomized by the lower spray pipe and the upper spray pipe to activate a medicament. The contact area of soil and the medicament is increased, and mixing is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of soil electric restoration, in particular to a citric acid-activated cadmium-contaminated soil electric restoration device. Background Art

[0002] Cadmium pollution is caused by factories that use cadmium compounds as raw materials or catalysts. Cadmium pollution refers to the pollution of the environment by cadmium metal elements. Cadmium is easily adsorbed by crops after it pollutes the soil, so cadmium pollution treatment is imperative. Cadmium-contaminated soil is generally activated by citric acid activation agents, and electro-remediation is used to make the soil usable normally. Electro-remediation removes pollutants from the soil through electromigration or electro-osmosis.

[0003] In the prior art, electric soil remediation devices repair soil by spraying chemicals on soil contaminated by cadmium. While spraying the chemicals, the soil is stirred by stirring blades to mix the soil and chemicals more evenly, thereby accelerating the efficiency of soil remediation.

[0004] However, this electric soil repair device will cause the soil to become wet due to the spraying of chemicals on the soil. When the stirring blades stir and mix the soil, the wet soil will adhere to the stirring blades, affecting the mixing of the chemicals and the soil. Utility Model Content

[0005] The utility model aims to solve the problem in the background technology that adding chemicals into the soil causes the soil to become wet and adhere to the stirring blades, affecting the mixing efficiency, and proposes a citric acid-activated cadmium-contaminated soil electric repair device.

[0006] The technical solution of the utility model is: a citric acid activated cadmium contaminated soil electric repair device, comprising:

[0007] A base, a reaction chamber is fixedly installed on the top of the base, and a medicine box is fixedly installed on the top of the reaction chamber;

[0008] A crushing assembly includes a feed inlet and a crushing device. The left side of the reaction bin is provided with an inclined feed inlet. The soil enters the interior of the reaction bin from the feed inlet along a parabolic trajectory. The crushing device is located at the soil movement trajectory.

[0009] The spreading assembly includes a lifting conveyor belt, a lower nozzle and an upper nozzle. The inner wall of the reaction bin is rotatably connected to the lifting conveyor belt. Two lower nozzles and two upper nozzles are provided. The ends of the lower nozzles and the upper nozzles are fixedly connected to the reaction bin. The water spray ports of the lower nozzles and the upper nozzles face the soil. The lower nozzles and the upper nozzles are connected to the reagent box.

[0010] Optionally, the lifting conveyor belt is arranged at an angle, the lifting conveyor belt is located directly below the crushing device, a baffle is fixedly installed on the side of the reaction bin facing the lifting conveyor belt, and the baffle is abutted against the front and back sides of the lifting conveyor belt.

[0011] Optionally, a scraper is fixedly installed on the inner wall of the reaction chamber and just below the tail end of the lifting conveyor belt, and the top surface of the scraper is in contact with the lifting conveyor belt.

[0012] Optionally, a receiving slide is fixedly installed on the right wall of the reaction chamber and directly below the lifting blade, and partitions are fixedly installed on both the front and back sides of the receiving slide.

[0013] Optionally, the crushing device includes a main crushing roller and an auxiliary crushing roller, both of which are provided with crushing teeth, the positions of the crushing teeth on the main crushing roller and the auxiliary crushing roller are staggered, and the ends of the main crushing roller and the auxiliary crushing roller are rotatably connected to the reaction bin.

[0014] Optionally, a first gear is fixedly mounted on the end of the main crushing roller, and a second gear is fixedly mounted on the end of the auxiliary crushing roller, and the first gear is meshingly connected with the second gear.

[0015] Optionally, a feeding platform is fixedly installed on the top of the base platform and on the left side of the reaction bin, and an inclined feeding chute is provided on the top of the feeding platform. A discharging chute is fixedly installed on the left side of the reaction bin, and the discharging chute is connected to the receiving slide. Citric acid activation agent is arranged in the agent box.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model is that the soil is crushed by the crushing device and then thrown out to perform parabolic movement. The inertia of soil with different gravity is different, so that the soil is thrown into the air and different particles of soil are separated. Then, the lower nozzle and the upper nozzle are arranged on both sides of the soil movement track. The lower nozzle and the upper nozzle atomize the agent, increase the contact area between the soil and the citric acid activation agent, speed up the mixing, thereby replacing the stirring mixing, avoiding that the soil added with the agent becomes wet and adheres to the stirring blades to affect the rotation and mixing of the citric acid activation agent and the soil.

[0018] Furthermore, the soil is crushed into small particles by the main crushing roller and the first gear, thereby increasing the contact area between the soil and the citric acid activation agent, accelerating the reaction efficiency, and avoiding soil compaction that causes the soil particles to be too large, resulting in the contact area between the agent and the soil being too small and unable to penetrate into the large soil particles, resulting in the inability to treat the cadmium pollution inside the large soil particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0020] Figure 2 A schematic cross-sectional view of a reaction chamber structure of an embodiment of the utility model is given;

[0021] Figure 3 Given Figure 2 A part of the main crushing roller structure enlarged schematic diagram;

[0022] Figure 4 A schematic diagram of a front and cross-sectional view of a reaction chamber structure of an embodiment of the utility model is given.

[0023] Figure numerals: 1. base platform; 2. feed platform; 3. reaction chamber; 4. reagent box; 5. crushing assembly; 51. feed port; 52. main crushing roller; 53. first gear; 54. second gear; 55. auxiliary crushing roller; 6. spreading assembly; 61. lifting conveyor belt; 62. lower nozzle; 63. upper nozzle; 64. scraper; 65. receiving slide. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1

[0030] This embodiment provides a citric acid activated cadmium contaminated soil electric remediation device, such as Figure 1 As shown, it includes a base 1, a reaction chamber 3 is fixedly installed on the top of the base 1, and a reagent box 4 is fixedly installed on the top of the reaction chamber 3; the reagent box 4 contains citric acid activating agent. When repairing the soil, not only the citric acid activating agent is used to activate the soil, but also the pollutants are removed from the soil by electric repair.

[0031] like Figure 2 As shown, a crushing assembly 5 is arranged inside the base 1, and the crushing assembly 5 includes a feed port 51 and a crushing device. An inclined feed port 51 is opened on the left side of the reaction bin 3, and soil enters the interior of the reaction bin 3 from the feed port along a parabolic trajectory, and the crushing device is located at the soil movement trajectory.

[0032] like Figure 4 As shown, a spreading assembly 6 is provided inside the base 1, and the spreading assembly 6 includes a lifting conveyor belt 61, a lower nozzle 62 and an upper nozzle 63. The lower nozzle 62 and the upper nozzle 63 are both connected to the reagent box 4, and the water spraying ports of the lower nozzle 62 and the upper nozzle 63 face the soil. Two lower nozzles 62 and two upper nozzles 63 are provided, and the ends of the lower nozzle 62 and the upper nozzle 63 are fixedly connected to the reaction chamber 3. The lower nozzle 62 is located below the soil movement track, and the upper nozzle 63 is located above the soil movement track. The reagent is atomized by the lower nozzle 62 and the upper nozzle 63 and sprayed from both sides of the soil, thereby expanding the contact area between the soil and the reagent.

[0033] The inner wall of the reaction bin 3 is rotatably connected to the lifting conveyor belt 61, which is located directly below the crushing device. A baffle is fixedly installed on the side of the reaction bin 3 facing the lifting conveyor belt 61, and the baffle is attached to the front and back sides of the lifting conveyor belt 61. The baffle intercepts the soil falling from the crushing device to prevent the soil from falling below the lifting conveyor belt 61.

[0034] The lifting conveyor belt 61 is tilted to transport the soil at a low place to a high place again for a second drop, and then the soil is sprayed by the lower spray pipe 62 and the upper spray pipe 63 so that the soil is completely in contact with the agent.

[0035] A scraper 64 is fixedly installed on the inner wall of the reaction chamber 3 and just below the tail end of the lifting conveyor belt 61 . The top surface of the scraper 64 is in contact with the lifting conveyor belt 61 , and the wet soil attached to the lifting conveyor belt 61 is scraped away by the scraper 64 .

[0036] like Figure 4 As shown, a receiving slide 65 is fixedly installed on the right wall of the reaction chamber 3 and directly below the lifting blade 64, and partitions are fixedly installed on both sides of the receiving slide 65. The soil falls from the tail end of the lifting conveyor belt 61 onto the receiving slide 65 and is finally discharged.

[0037] In this embodiment, the soil is crushed by the crushing device and then thrown out to perform parabolic motion. The inertia of soils with different gravities is different, and the resulting parabolic motion trajectories are different, so that the soil gathered together is thrown into the air and separated, and then the lower nozzle 62 and the upper nozzle 63 are placed on both sides of the soil movement trajectory. The lower nozzle 62 and the upper nozzle 63 atomize the citric acid activating agent to increase the contact area between the soil and the citric acid activating agent and accelerate mixing.

[0038] Example 2

[0039] Based on Example 1, this example proposes a citric acid activated cadmium contaminated soil electric remediation device, such as Figure 2 and 3 As shown, the crushing device includes a main crushing roller 52 and an auxiliary crushing roller 55. The end of the main crushing roller 52 is fixedly connected to a motor through a rotating shaft. The main crushing roller 52 and the auxiliary crushing roller 55 are both provided with crushing teeth. The positions of the crushing teeth on the main crushing roller 52 and the auxiliary crushing roller 55 are staggered. The ends of the main crushing roller 52 and the auxiliary crushing roller 55 are both rotatably connected to the reaction chamber 3. Since the soil is contaminated and compacted, the soil is crushed by the main crushing roller 52 and the first gear 53, so that the soil is crushed into small particles, which are better in contact with the agent for reaction.

[0040] like Figure 3 As shown, a first gear 53 is fixedly mounted on the end of the main crushing roller 52, and a second gear 54 is fixedly mounted on the end of the auxiliary crushing roller 55, and the first gear 53 is meshedly connected with the second gear 54. The main crushing roller 52 drives the first gear 53 to rotate, and the first gear 53 drives the second gear 54 and the auxiliary crushing roller 55 to rotate, so that the main crushing roller 52 and the auxiliary crushing roller 55 rotate in opposite directions, thereby increasing the crushing effect.

[0041] In this embodiment, the soil is crushed by the main crushing roller 52 and the first gear 53, so that the soil is broken into small particles, the contact area between the soil and the citric acid activating agent is increased, the reaction efficiency is accelerated, and the soil is prevented from being compacted and causing the soil particles to be too large, resulting in the contact area between the citric acid activating agent and the soil being too small, and the citric acid activating agent cannot penetrate into the large soil particles, resulting in the cadmium pollution inside the large soil particles being unable to be treated.

[0042] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A citric acid activated cadmium contaminated soil electric remediation device, characterized in that: include: A base (1), a reaction chamber (3) is fixedly mounted on the top of the base (1), and a medicine box (4) is fixedly mounted on the top of the reaction chamber (3); A crushing assembly (5) comprises a feed inlet (51) and a crushing device, wherein the left side of the reaction chamber (3) is provided with an inclined feed inlet (51), and the soil enters the interior of the reaction chamber (3) from the feed inlet along a parabolic trajectory, and the crushing device is located at the soil movement trajectory; The spraying assembly (6) comprises a lifting conveyor belt (61), a lower spray pipe (62) and an upper spray pipe (63). The inner wall of the reaction chamber (3) is rotatably connected to the lifting conveyor belt (61). Two lower spray pipes (62) and two upper spray pipes (63) are provided. The ends of the lower spray pipe (62) and the upper spray pipe (63) are fixedly connected to the reaction chamber (3). The water spraying ports of the lower spray pipe (62) and the upper spray pipe (63) face the soil. The lower spray pipe (62) and the upper spray pipe (63) are connected to the medicine box (4).

2. The citric acid activated cadmium contaminated soil electric remediation device according to claim 1, characterized in that: The lifting conveyor belt (61) is arranged at an angle, and the lifting conveyor belt (61) is located directly below the crushing device. A baffle is fixedly installed on the side of the reaction bin (3) facing the lifting conveyor belt (61), and the baffle is abutted against the front and back sides of the lifting conveyor belt (61).

3. The citric acid activated cadmium contaminated soil electric remediation device according to claim 2, characterized in that: A scraper (64) is fixedly mounted on the inner wall of the reaction chamber (3) and located just below the rear end of the lifting conveyor belt (61), and the top surface of the scraper (64) is in contact with the lifting conveyor belt (61).

4. The citric acid activated cadmium contaminated soil electric remediation device according to claim 1, characterized in that: A receiving slide plate (65) is fixedly mounted on the right wall of the reaction chamber (3) and directly below the scraper (64), and partition plates are fixedly mounted on both the front and back sides of the receiving slide plate (65).

5. The citric acid activated cadmium contaminated soil electric remediation device according to claim 1, characterized in that: The crushing device comprises a main crushing roller (52) and an auxiliary crushing roller (55), the main crushing roller (52) and the auxiliary crushing roller (55) are both provided with crushing teeth, the positions of the crushing teeth on the main crushing roller (52) and the auxiliary crushing roller (55) are staggered, and the ends of the main crushing roller (52) and the auxiliary crushing roller (55) are both rotatably connected to the reaction chamber (3).

6. The citric acid activated cadmium contaminated soil electric remediation device according to claim 5, characterized in that: A first gear (53) is fixedly mounted on the end of the main crushing roller (52), and a second gear (54) is fixedly mounted on the end of the auxiliary crushing roller (55), and the first gear (53) is meshingly connected with the second gear (54).

7. The citric acid activated cadmium contaminated soil electric remediation device according to claim 4, characterized in that: A feeding platform (2) is fixedly installed on the top of the base platform (1) and located on the left side of the reaction bin (3). An inclined feeding chute is provided on the top of the feeding platform (2). A discharging chute is fixedly installed on the left side of the reaction bin (3). The discharging chute is connected to a receiving slide plate (65). Citric acid activation agent is arranged in the agent box (4).

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