Soil remediation agent as well as preparation process and preparation system of soil remediation agent

Abstract

The invention discloses a soil remediation agent as well as a preparation process and a preparation system of the soil remediation agent. The soil remediation agent is prepared from the following raw materials: citric acid modified manioc waste, hydrotalcite-like compound, fly ash and a microbial agent, the preparation process of the soil remediation agent comprises the following steps: S1, adding the citric acid modified manioc waste, the hydrotalcite-like compound and the fly ash into preparation equipment according to a ratio; the preparation system comprises preparation equipment, the preparation equipment comprises an annular supporting seat, and a preparation cylinder is mounted on the annular supporting seat. According to the soil remediation agent, the adsorption effect on heavy metal cadmium is remarkably improved, the soil flora environment is improved through the microbial agent, plant growth is promoted, the multiple production steps of mixing, grinding, drying and the like are integrated in the same equipment, integrated production of the soil remediation agent is achieved, and the soil remediation agent is suitable for large-scale production. Therefore, the running times of raw materials among different devices are remarkably reduced, the workload of workers and the workload during production are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation agents, and in particular to a soil remediation agent, a soil remediation agent preparation process and a preparation system. Background Art

[0002] With the acceleration of industrialization, soil pollution is becoming increasingly serious, especially heavy metal pollution, which poses a huge threat to the ecological environment and human health. Traditional soil remediation methods have problems such as low efficiency, high cost, and easy secondary pollution. Therefore, it is particularly important to develop an efficient, economical, and environmentally friendly soil remediation agent and its preparation process.

[0003] At present, in the production process of soil remediation agent, the raw materials are first mixed evenly; then the mixed raw materials are conveyed to the grinding equipment by a screw conveyor for grinding; after grinding, the powdered raw materials are conveyed to the drying equipment by a screw conveyor for further drying to obtain the finished soil remediation agent; although the above method can produce soil remediation agent, the raw materials need to be turned over many times, which increases the workload of the staff and production; if the produced soil remediation agent is mixed with the soil for remediation test, additional equipment is required; for some small factories, the investment of multiple equipment undoubtedly increases the economic burden; for this reason, the present application proposes a soil remediation agent, a soil remediation agent preparation process and a preparation system. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and to propose a soil remediation agent, a soil remediation agent preparation process and a preparation system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A soil repair agent comprises the following raw materials in parts by weight: 60-80 parts of citric acid modified cassava residue, 11-15 parts of hydrotalcite-like substance, 22-30 parts of fly ash, 6-10 parts of microbial agent and 12-20 parts of amino acid modified bentonite.

[0006] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0007] The present invention also discloses a preparation system of a soil remediation agent, comprising a preparation device, wherein the preparation device comprises an annular support seat, a preparation cylinder is mounted on the annular support seat, a feeding port is penetrated through the upper end of the preparation cylinder, a funnel-shaped flow guide bucket is provided at the bottom of the flow guide bucket, a discharge pipe is installed at the bottom of the flow guide bucket, a mounting frame is fixed to the inner wall of the preparation cylinder, a flow guide cylinder is installed on the mounting frame, a sleeve and a rotating rod are coaxially arranged in the flow guide cylinder, a support rod is fixed to the inner wall of the discharge pipe, the sleeve penetrates the support rod and is rotatably connected to the support rod, and the sleeve It is sleeved on the outside of the rotating rod and rotatably connected thereto, the sleeve is fixed with a spiral blade used in conjunction with the guide cylinder, the rotating rod is fixed with a plurality of crushing knives located above the spiral blade, the preparation cylinder is rotatably connected with a fixed dish-shaped grinding disc, the fixed dish-shaped grinding disc is connected to the sleeve through two L-shaped rods, a movable dish-shaped grinding disc used in conjunction therewith is provided above the fixed dish-shaped grinding disc, the movable dish-shaped grinding disc can move up and down and intermittently cooperate with the fixed dish-shaped grinding disc, and an electric heating wire is installed in the movable dish-shaped grinding disc.

[0008] Preferably, it also includes a driving mechanism for driving the sleeve and the rotating rod to rotate, the driving mechanism includes a first bracket fixed to the inner wall of the annular support seat, a motor is installed on the first bracket, a short rod is fixed to the output end of the motor, a first bevel gear is installed on the short rod, a second bevel gear and a third bevel gear are installed on the sleeve and the rotating rod respectively, and the first bevel gear is meshed with the second bevel gear and the third bevel gear.

[0009] Preferably, it also includes a transmission mechanism for driving the mobile disc-shaped grinding disc to move, the transmission mechanism includes a second bracket installed on the inner wall of the annular support seat, a reduction box is installed on the second bracket, the rotating rod is fixedly connected to the shaft end of the reduction box, a circular plate is fixed to the other shaft rod of the reduction box, the bottom of the circular plate is eccentrically hingedly connected to a connecting rod, a first piston cylinder is installed on the annular support seat, a first movable piston is slidably connected in the first piston cylinder, the connecting rod is hingedly connected to the first movable piston, a second piston cylinder is installed through the preparation cylinder, the first piston cylinder and the second piston cylinder are connected by a delivery pipe, a second movable piston is slidably connected in the second piston cylinder, a connecting rod is fixed to the bottom of the second movable piston, a connecting plate is fixed to the bottom of the connecting rod, and the connecting plate is connected to the mobile disc-shaped grinding disc through a telescopic member.

[0010] Preferably, the telescopic member includes a connecting tube fixed to the upper end of the movable disc-shaped grinding disc, the bottom of the connecting plate is fixedly connected to a vertical rod, the inner wall of the connecting tube is fixed with a spring, and the upper end of the spring is fixedly connected to the bottom of the vertical rod.

[0011] Preferably, a discharge hopper is penetrated through the annular support seat, and the sleeve penetrates through the discharge hopper and is rotatably connected thereto.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention significantly improves the adsorption effect of heavy metal cadmium by compounding citric acid-modified cassava residue and hydrotalcite-like materials; solves the problem of low pH value of the modified material and limited adsorption performance of the hydrotalcite-like material; fly ash provides the necessary silicon element; microbial agents improve the soil flora environment and promote plant growth; the preparation process is simple, the technical requirements are low, the raw material sources are wide, and the production cost is reduced.

[0013] 2. The present invention realizes the integrated production of soil remediation agent by integrating multiple production steps such as mixing, grinding and drying in the same equipment, which significantly reduces the number of times the raw materials are transferred between different equipment, reduces the workload of staff and production, and thus improves production efficiency.

[0014] 3. For small factories, the investment of multiple equipment often brings great economic pressure. The present invention reduces the need for additional equipment by designing a multifunctional preparation equipment, thereby reducing the economic burden of the factory.

[0015] 4. The spiral blade and crushing knife design in the present invention can achieve sufficient mixing and crushing of the raw materials. At the same time, through the cooperation of the fixed disc-shaped grinding disc and the movable disc-shaped grinding disc, as well as the heating effect of the electric heating wire, the grinding effect and drying quality of the raw materials can be further improved, thereby ensuring the production quality of the soil remediation agent.

[0016] 5. The present invention can not only produce soil remediation agents, but also achieve soil crushing, grinding and mixing by adding soil to be repaired, so as to subsequently improve the quality of soil remediation by the soil remediation agent.

[0017] 6. The present invention can achieve intermittent cooperation between the fixed dish-shaped grinding disc and the movable dish-shaped grinding disc through the cooperation of the first piston cylinder, the second piston cylinder, etc., to avoid accumulation of raw materials between the two.

[0018] 7. In the present invention, when the movable dish-shaped grinding disc moves downward to cooperate with the fixed dish-shaped grinding disc to grind the raw material, there is more raw material on the upper end of the fixed dish-shaped grinding disc, so that a large area and a large amount of raw material can be ground.

[0019] In summary, the soil remediation agent of the present invention significantly improves the adsorption effect of heavy metal cadmium through the compounding of citric acid-modified cassava residue and hydrotalcite-like substances. Fly ash provides the necessary silicon element. The microbial agent improves the soil flora environment and promotes plant growth. By integrating multiple production steps such as mixing, grinding and drying in the same equipment, the integrated production of the soil remediation agent is realized, which significantly reduces the number of times the raw materials are transferred between different equipment, reduces the workload of staff and production, and thus improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a preparation system of a soil remediation agent proposed by the present invention; Figure 2 A cross-sectional view of a system for preparing a soil remediation agent proposed by the present invention; Figure 3 This is a schematic diagram of an annular support seat and a preparation cylinder in a preparation system of a soil remediation agent proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a motor in a preparation system of a soil remediation agent proposed by the present invention; Figure 5 A schematic diagram of a spiral leaf in a preparation system of a soil remediation agent proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a movable dish-shaped grinding disc and a fixed dish-shaped grinding disc in a preparation system of a soil remediation agent proposed by the present invention; Figure 7 This is a disassembled diagram of a second piston cylinder and a second movable piston in a preparation system of a soil remediation agent proposed by the present invention.

[0021] In the figure: 1 annular support seat, 2 preparation cylinder, 3 second piston cylinder, 4 feeding port, 5 conveying pipe, 6 discharge hopper, 7 first piston cylinder, 8 guide hopper, 9 discharge pipe, 10 mobile dish-shaped grinding disc, 11 fixed dish-shaped grinding disc, 12 guide cylinder, 13 connecting plate, 14 annular inclined surface, 15 mounting frame, 16 connecting rod, 17 connecting pipe, 18 vertical rod, 19 spiral blade, 20 first bracket, 21 second bracket, 22 first mobile piston, 23 connecting rod, 24 circular plate, 25 reduction box, 26 motor, 27 short rod, 28 first bevel gear, 29 support rod, 30 sleeve, 31 rotating rod, 32 second bevel gear, 33 third bevel gear, 34 crushing knife, 35 spring, 36 second mobile piston, 37 L-shaped rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1, a soil remediation agent, comprising the following raw materials in parts by weight: 60 parts of citric acid modified cassava residue, 11 parts of hydrotalcite, 22 parts of fly ash, 6 parts of microbial agent, and 12 parts of amino acid modified bentonite, wherein the fly ash contains SiO2≥30%.

[0024] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0025] Example 2, a soil remediation agent, comprising the following raw materials in parts by weight: 65 parts of citric acid modified cassava residue, 12 parts of hydrotalcite, 22 parts of fly ash, 7 parts of microbial agent, and 14 parts of amino acid modified bentonite, wherein the fly ash contains SiO2≥30%.

[0026] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0027] Example 3, a soil remediation agent, comprising the following raw materials in parts by weight: 70 parts of citric acid modified cassava residue, 13 parts of hydrotalcite, 26 parts of fly ash, 7 parts of microbial agent, and 16 parts of amino acid modified bentonite, wherein the fly ash contains SiO2≥30%.

[0028] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0029] Example 4, a soil remediation agent, comprising the following raw materials in parts by weight: 75 parts of citric acid modified cassava residue, 14 parts of hydrotalcite, 28 parts of fly ash, 9 parts of microbial agent, and 18 parts of amino acid modified bentonite, wherein the fly ash contains SiO2≥30%.

[0030] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0031] Example 5, a soil remediation agent, comprising the following raw materials in parts by weight: 80 parts of citric acid modified cassava residue, 15 parts of hydrotalcite, 30 parts of fly ash, 10 parts of microbial agent, and 20 parts of amino acid modified bentonite, wherein the fly ash contains SiO2≥30%.

[0032] The present invention also discloses a process for preparing a soil remediation agent, comprising the following steps: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

[0033] The soil remediation agents in Examples 1 to 5 significantly improve the adsorption effect of heavy metal cadmium through the compounding of citric acid-modified cassava residue and hydrotalcite-like materials; the problems of low pH of the modified materials and limited adsorption performance of hydrotalcite-like materials are solved. Fly ash provides the necessary silicon element, and the microbial agent improves the soil flora environment and promotes plant growth. The preparation process is simple, the technical requirements are low, the raw material sources are wide, and the production cost is reduced.

[0034] The present invention also discloses a preparation system for a soil remediation agent, and the preparation processes in Examples 1 to 5 can be applied to the preparation system to produce the soil remediation agent; Specifically, the preparation equipment includes an annular support seat 1, on which a preparation cylinder 2 is installed, a feeding port 4 is penetrated at the upper end of the preparation cylinder 2, a funnel-shaped guide hopper 8 is provided at the bottom of the preparation cylinder 2, a discharge pipe 9 is installed at the bottom of the guide hopper 8, a discharge hopper 6 is penetrated on the annular support seat 1, and a sleeve 30 penetrates the discharge hopper 6 and is rotatably connected thereto.

[0035] A mounting frame 15 is fixed to the inner wall of the preparation cylinder 2, and a guide cylinder 12 is installed on the mounting frame 15. A sleeve 30 and a rotating rod 31 are coaxially arranged inside the guide cylinder 12. A support rod 29 is fixed to the inner wall of the discharge pipe 9. Openable baffles are installed on both sides of the support rod 29, which can be opened and closed by electric drive to achieve sealing of the bottom of the discharge pipe 9.

[0036] It also includes a driving mechanism for driving the sleeve 30 and the rotating rod 31 to rotate, and the driving mechanism includes a first bracket 20 fixed to the inner wall of the annular support seat 1, and a motor 26 is installed on the first bracket 20. A short rod 27 is fixed to the output end of the motor 26, and a first bevel gear 28 is installed on the short rod 27. A second bevel gear 32 and a third bevel gear 33 are respectively installed on the sleeve 30 and the rotating rod 31, and the first bevel gear 28 is meshed with the second bevel gear 32 and the third bevel gear 33.

[0037] The sleeve 30 passes through the support rod 29 and is rotatably connected thereto. The sleeve 30 is sleeved on the outside of the rotating rod 31 and is rotatably connected thereto. The sleeve 30 is fixed with a spiral blade 19 used in conjunction with the guide tube 12. The spiral blade 19 is partially located in the discharge pipe 9, so that the raw materials in the discharge pipe 9 can be transported upward for mixing and grinding to ensure the production quality of the soil remediation agent. The rotating rod 31 is fixed with a plurality of crushing knives 34 located above the spiral blade 19. The preparation tube 2 is rotatably connected with a fixed disc-shaped grinding disc 11. The dish-shaped grinding disc 11 is connected to the sleeve 30 through two L-shaped rods 37, so the rotation of the sleeve 30 can realize the rotation of the fixed dish-shaped grinding disc 11 through the transmission of the L-shaped rod 37; a mobile dish-shaped grinding disc 10 used in conjunction with the fixed dish-shaped grinding disc 11 is provided above the fixed dish-shaped grinding disc 11, wherein the inner wall of the upper end of the mobile dish-shaped grinding disc 10 is provided with an annular inclined surface 14, so that the raw material can pass through the annular inclined surface 14 and enter between the fixed dish-shaped grinding disc 11 and the mobile dish-shaped grinding disc 10 for grinding the raw material.

[0038] The mobile dish-shaped grinding disc 10 can move up and down and intermittently cooperate with the fixed dish-shaped grinding disc 11, and a heating wire is installed in the mobile dish-shaped grinding disc 10, and the heating wire is used to dry the raw material; it also includes a transmission mechanism for driving the mobile dish-shaped grinding disc 10 to move, and the transmission mechanism includes a second bracket 21 installed on the inner wall of the annular support seat 1, and a reduction box 25 is installed on the second bracket 21. The rotating rod 31 is fixedly connected to the shaft end of the reduction box 25, and the other shaft rod of the reduction box 25 is fixed with a circular plate 24, and the circular plate 24 is coaxially fixedly connected with the shaft end connected to the reduction box 25.

[0039] The bottom of the circular plate 24 is eccentrically hingedly connected with a connecting rod 23, a first piston cylinder 7 is installed on the annular support seat 1, a first movable piston 22 is slidably connected in the first piston cylinder 7, the connecting rod 23 is hingedly connected to the first movable piston 22, a second piston cylinder 3 is penetrated and installed on the preparation cylinder 2, the first piston cylinder 7 and the second piston cylinder 3 are connected by a delivery pipe 5, a second movable piston 36 is slidably connected in the second piston cylinder 3, a connecting rod 16 is fixed to the bottom of the second movable piston 36, and a connecting plate 13 is fixed to the bottom of the connecting rod 16.

[0040] The connecting plate 13 is connected to the mobile disc-shaped grinding disc 10 through a telescopic member, which includes a connecting pipe 17 fixed to the upper end of the mobile disc-shaped grinding disc 10. The bottom of the connecting plate 13 is fixedly connected to a vertical rod 18, and the inner wall of the connecting pipe 17 is fixed with a spring 35. The upper end of the spring 35 is fixedly connected to the bottom of the vertical rod 18.

[0041] When in use, citric acid modified cassava residue, hydrotalcite-like substance, and fly ash (referred to as raw materials) are added into the preparation barrel 2 according to a proportion, and then the motor 26 is started. The motor 26 drives the short rod 27 and the first bevel gear 28 to rotate. The first bevel gear 28 drives the second bevel gear 32 and the third bevel gear 33 to rotate. The second bevel gear 32 drives the sleeve 30 to rotate. The third bevel gear 33 drives the rotating rod 31 to rotate. The rotation of the sleeve 30 drives the spiral blade 19 to rotate, so that the raw materials can be transported upward through the guide cylinder 12. The rotation of the rotating rod 31 drives the multiple crushing knives 34 to rotate. The multiple rotating crushing knives 34 can crush and mix the raw materials transported upward. With the rotation of the spiral blade 19 and the guide cylinder 12, the crushed raw materials can be transported to the top of the guide cylinder 12 and fall down. Some of the raw materials fall on the mobile dish-shaped grinding disc 10, and some fall on the fixed dish-shaped grinding disc 11. At this time, the electric heating wire in the mobile dish-shaped grinding disc 10 works, and the raw materials falling on the mobile dish-shaped grinding disc 10 can be dried. Finally, due to gravity, the raw materials falling on the mobile dish-shaped grinding disc 10 slowly fall and fall into the guide bucket 8. The sleeve 30 rotates and transmits through the L-shaped rod 37 to realize the rotation of the fixed dish-shaped grinding disc 11. The raw materials on the fixed dish-shaped grinding disc 11 are separated by centrifugal force and fall into the guide bucket 8 and gather at the guide tube 12. In this way, the raw materials can be circulated, transported and mixed, and the mixing effect of the raw materials of powder particles is better. After uniform mixing, the microbial agent and amino acid modified bentonite are added into the preparation cylinder 2 according to the proportion, and the raw materials are continuously mixed in the above manner; The rotating rod 31 rotates to drive the reduction box 25 to work, and the circular plate 24 is slowly rotated through the transmission of the reduction box 25. The rotation of the circular plate 24 drives the connecting rod 23 to move, thereby driving the first movable piston 22 to reciprocate. When the first movable piston 22 moves close to the circular plate 24, the fluid (hydraulic oil) in the second piston cylinder 3 can be sucked into the first piston cylinder 7 through the delivery pipe 5, so that the second movable piston 36 drives the connecting rod 16 to move upward, and the movable dish-shaped grinding disc 10 is moved upward through the transmission of the telescopic member; When the first movable piston 22 moves away from the circular plate 24, the hydraulic oil in the first piston cylinder 7 can be squeezed into the second piston cylinder 3, so that the second movable piston 36 drives the connecting rod 16 to move downward, and the movable dish-shaped grinding disc 10 is driven by the telescopic member to move downward, and finally abuts against the fixed dish-shaped grinding disc 11 with raw materials in between. The sleeve 30 rotates to drive the L-shaped rod 37 and the fixed dish-shaped grinding disc 11 to rotate, so that the raw materials between the two can be ground; It should be noted that when the movable dish-shaped grinding disc 10 moves downward to cooperate with the fixed dish-shaped grinding disc 11 to grind the raw material, there is more raw material on the upper end of the fixed dish-shaped grinding disc 11, so that a large area and a large amount of raw material can be ground.

[0042] As the connecting rod 16 moves downward, the vertical rod 18 is driven downward, and the spring 35 is compressed at this time. The reaction force acts on the movable dish-shaped grinding disc 10, so that the pressure between the movable dish-shaped grinding disc 10 and the fixed dish-shaped grinding disc 11 increases, thereby achieving a better grinding effect on the raw material. Since the movable dish-shaped grinding disc 10 is heated, the dried raw materials after grinding can be better dried, and the powder raw materials can be mixed at the same time; In this way, the above-mentioned mixing, drying and grinding of the raw materials can be achieved and integrated; After the mixing is finished, the soil to be repaired can be added to the preparation cylinder 2, and the soil can be crushed and ground and mixed with the soil repair agent; After the mixing is completed, the motor 26 is started to reverse, and the sleeve 30 and the spiral blade 19 are reversed at this time, so that the repaired soil can be discharged into the discharge hopper 6 through the discharge pipe 9 and finally discharged.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soil remediation agent, characterized in that: The invention comprises the following raw materials in parts by weight: 60-80 parts of citric acid modified cassava residue, 11-15 parts of hydrotalcite, 22-30 parts of fly ash, 6-10 parts of microbial agent and 12-20 parts of amino acid modified bentonite.

2. A soil remediation agent according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 65 parts of citric acid modified cassava residue, 12 parts of hydrotalcite-like solids, 22 parts of fly ash, 7 parts of microbial agent and 14 parts of amino acid modified bentonite.

3. A soil remediation agent according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 75 parts of citric acid modified cassava residue, 14 parts of hydrotalcite-like solids, 28 parts of fly ash, 9 parts of microbial agent and 18 parts of amino acid modified bentonite.

4. The soil remediation agent, soil remediation agent preparation process and preparation system according to claim 1, characterized in that: The fly ash contains SiO2≥30%.

5. A process for preparing the soil remediation agent according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, adding citric acid modified cassava residue, hydrotalcite-like substance and fly ash into a preparation device according to a proportion, and uniformly mixing them through the preparation device; S2, adding the microbial agent and the amino acid modified bentonite into the preparation equipment according to the proportion, and uniformly mixing them; S3, grinding the mixed material through a preparation device to obtain a powdered soil remediation agent; S4, drying the powdered soil remediation agent through a preparation device to obtain a finished product; S5, discharging the prepared soil remediation agent product and collecting and packaging it.

6. A soil remediation agent preparation system, comprising the preparation equipment in steps S1-S5, characterized in that: The preparation device comprises an annular support seat (1), a preparation cylinder (2) is mounted on the annular support seat (1), a feeding port (4) is penetrated at the upper end of the preparation cylinder (2), the bottom of the preparation cylinder (2) is a funnel-shaped flow guide bucket (8), a discharge pipe (9) is mounted at the bottom of the flow guide bucket (8), a mounting frame (15) is fixed to the inner wall of the preparation cylinder (2), a flow guide cylinder (12) is mounted on the mounting frame (15), a sleeve (30) and a rotating rod (31) are coaxially arranged in the flow guide cylinder (12), a support rod (29) is fixed to the inner wall of the discharge pipe (9), the sleeve (30) penetrates the support rod (29) and is rotatably connected thereto, the sleeve (30) is sleeved on the rotating rod (31), and the sleeve (30) is sleeved on the inner wall of the rotating rod (31). The sleeve (30) is rotatably connected to the outside thereof, a spiral blade (19) used in conjunction with the guide tube (12) is fixed on the sleeve (30), a plurality of crushing knives (34) located above the spiral blade (19) are fixed on the rotating rod (31), a fixed disc-shaped grinding disc (11) is rotatably connected to the preparation tube (2), the fixed disc-shaped grinding disc (11) is connected to the sleeve (30) via two L-shaped rods (37), a movable disc-shaped grinding disc (10) used in conjunction with the fixed disc-shaped grinding disc (11) is provided above the fixed disc-shaped grinding disc (11), the movable disc-shaped grinding disc (10) can move up and down to intermittently cooperate with the fixed disc-shaped grinding disc (11), and a heating wire is installed in the movable disc-shaped grinding disc (10).

7. A soil remediation agent preparation system according to claim 6, characterized in that: The invention also comprises a driving mechanism for driving the sleeve (30) and the rotating rod (31) to rotate, the driving mechanism comprising a first bracket (20) fixed to the inner wall of the annular support seat (1), a motor (26) being mounted on the first bracket (20), a short rod (27) being fixed to the output end of the motor (26), a first bevel gear (28) being mounted on the short rod (27), a second bevel gear (32) and a third bevel gear (33) being mounted on the sleeve (30) and the rotating rod (31), respectively, the first bevel gear (28) being meshed with the second bevel gear (32) and the third bevel gear (33).

8. A soil remediation agent preparation system according to claim 7, characterized in that: The invention also comprises a transmission mechanism for driving the movable dish-shaped grinding disc (10) to move, the transmission mechanism comprising a second bracket (21) mounted on the inner wall of the annular support seat (1), a reduction box (25) being mounted on the second bracket (21), the rotating rod (31) being fixedly connected to the shaft end of the reduction box (25), a circular plate (24) being fixedly connected to the other shaft of the reduction box (25), a connecting rod (23) being eccentrically hingedly connected to the bottom of the circular plate (24), a first piston cylinder (7) being mounted on the annular support seat (1), a first movable piston cylinder (7) being slidably connected to the inside of the first piston cylinder (7), and a second movable piston cylinder (31) being fixedly connected to the shaft end of the reduction box (25). The first movable piston (22) is hingedly connected to the connecting rod (23); the second piston cylinder (3) is installed through the preparation cylinder (2); the first piston cylinder (7) is connected to the second piston cylinder (3) through a delivery pipe (5); the second movable piston (36) is slidably connected in the second piston cylinder (3); a connecting rod (16) is fixed to the bottom of the second movable piston (36); a connecting plate (13) is fixed to the bottom of the connecting rod (16); the connecting plate (13) is connected to the movable disc-shaped grinding disc (10) through a telescopic member.

9. A soil remediation agent preparation system according to claim 8, characterized in that: The telescopic member comprises a connecting tube (17) fixed to the upper end of the movable dish-shaped grinding disc (10); the bottom of the connecting plate (13) is fixedly connected to a vertical rod (18); the inner wall of the connecting tube (17) is fixed to a spring (35); the upper end of the spring (35) is fixedly connected to the bottom of the vertical rod (18).

10. A soil remediation agent preparation system according to claim 6, characterized in that: A discharge hopper (6) is provided through the annular support seat (1), and the sleeve (30) passes through the discharge hopper (6) and is rotatably connected thereto.

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