Combined equipment for treating eluted soil by using biochar

Abstract

The utility model discloses combined equipment for treating leached soil by using biochar, which comprises an equipment body, a leaching module and a biochar automatic stabilization module, an upward sludge inlet for feeding operation is formed in the upper part of the equipment body, and a sludge outlet is formed in the lower part of the equipment body; a leaching module and an automatic biochar stabilizing module are arranged on the upper portion of the equipment body, a stirring mechanism is arranged in a cavity where the equipment body is located, the leaching module sprays chemicals into the inner cavity of the equipment body, and the automatic biochar stabilizing module intermittently feeds carbon blocks into the inner cavity of the equipment body; and the stirring mechanism is used for stirring and rolling soil raw materials in the inner cavity of the equipment body, so that the soil and the carbon blocks are uniformly mixed. The efficient combination of the leaching technology and the stabilization technology makes up the defects of a single leaching technology, such as secondary pollution caused by a chemical leaching agent, soil quality reduction caused by the leaching technology and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil treatment equipment, and in particular relates to a combined equipment for treating washed soil with biochar. Background Art

[0002] Soil leaching technology can promote the dissolution / migration of pollutants in the soil environment by leaching the soil with fluids, removing pollutants through chelation, desorption or dissolution, or using fluid flushing force to remove pollutants in the soil gaps. Traditional single leaching technology often leads to problems such as substandard remediation and high remediation costs during the remediation process; at the same time, since chemical leaching agents have the characteristics of exchange and desorption, solubility promotion and fluidity for pollutants, they are prone to reactivation of stable pollutants in the soil during the remediation process, such as heavy metals changing from bound to free and effective states; furthermore, the chemical leaching process will have certain negative effects on the physical and chemical properties, microbial communities and nutrient fertility of the soil to varying degrees, such as some leaching agents will cause soil nutrient loss and change the microecological environment.

[0003] Biochar has the characteristics of stable structure, loose and porous structure, huge specific surface area, etc., and has strong adsorption capacity for pollutants in soil. In addition, biochar is rich in organic matter, which has a good regulatory effect on the physical and chemical properties and microecology of soil. Therefore, for soil that still does not meet the standards or is not suitable for subsequent development and utilization after single leaching technology treatment, biochar can be used for re-treatment to make it meet the standards or facilitate subsequent utilization.

[0004] In the Chinese patent application publication number CN115815303A, a household fermentation and carbonization integrated device for preparing soil conditioner is disclosed, which includes: a crushing device, a fermentation device, a transmission device, a spraying device, a drying device, and a carbonization device. However, this device is only suitable for the use of soil conditioner, and for the improvement of the soil itself, it is necessary to quantitatively add this soil conditioner to the soil, and it cannot achieve the improvement of the soil itself. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a combined device for treating washed soil using biochar, thereby solving the above-mentioned technical features existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A combined device for treating washed soil with biochar, comprising a device body, a washing module, and a biochar automatic stabilization module, wherein an upward mud inlet is provided at the upper part of the device body for feeding, and a mud outlet is provided at the lower part of the device body;

[0008] A rinsing module and a biochar automatic stabilization module are arranged at the upper part where the equipment body is located, and a stirring mechanism is arranged in the cavity where the equipment body is located. The rinsing module sprays the reagent into the inner cavity of the equipment body, and the biochar automatic stabilization module intermittently puts the charcoal blocks into the inner cavity of the equipment body; the stirring mechanism is used to stir and roll the soil raw materials in the inner cavity of the equipment body to mix the soil and the charcoal blocks evenly;

[0009] The biochar automatic stabilization module includes a charcoal feeding plate, a charcoal feeding chamber, and a charcoal feeding pipe. The charcoal feeding plate is located at the upper part of the inner cavity where the equipment body is located. The charcoal feeding chamber contains charcoal blocks. The charcoal feeding chamber is connected to the charcoal feeding plate through the charcoal feeding pipe, and the charcoal blocks are fed to the charcoal feeding plate through the charcoal feeding pipe and fall into the cavity where the equipment body is located.

[0010] Furthermore, the mud inlet is loaded with spiral blades, and the added soil raw materials are crushed by the rotation of the spiral blades.

[0011] Furthermore, the rinsing module includes a medicine storage box located on the upper part of the equipment body, and a spray hole connected to the medicine storage box through a conduit and extending into the inner cavity of the equipment body, and the medicine stored in the medicine storage box is sprayed into the inner cavity of the equipment body through the spray hole.

[0012] Furthermore, the spray holes are distributed in multiple groups, and can achieve uniform spraying of the inner cavity of the equipment body.

[0013] Furthermore, the carbon-adding chamber realizes intermittent delivery of carbon blocks through a delivery pump.

[0014] Furthermore, a gravity sensor is provided below the device body, and the overall gravity of the device body is monitored by the gravity sensor. When a preset value is reached, the gravity sensor transmits the monitoring signal to the delivery pump, thereby enabling the delivery pump to control the intermittent delivery of carbon blocks in the carbon feeding chamber.

[0015] Furthermore, a row of charcoal throwing channels are arranged on the upper surface of the charcoal throwing plate, and the charcoal throwing channels are interconnected with the charcoal throwing pipe, so that the charcoal blocks can fall from the charcoal throwing channels into the cavity where the equipment body is located.

[0016] Furthermore, the stirring mechanism includes an engine, a rotating shaft, and stirring blades. The rotating shaft passes through the inner cavity where the equipment body is located, and stirring blades are arranged on the periphery of the rotating shaft. The rotating shaft is rotated by the engine, thereby driving the stirring blades on the rotating shaft to deflect synchronously, thereby achieving full mixing of the soil carried in the inner cavity where the equipment body is located with the charcoal blocks in a spraying state.

[0017] Furthermore, a layer of filter screen is arranged at the inner bottom where the equipment body is located, and a waste liquid collection port is arranged below the filter screen, through which the waste liquid generated during the mixing process is collected.

[0018] Furthermore, the waste liquid collection port is located directly below the equipment body, and the mud outlet is located at the bottom of the side where the equipment body is located.

[0019] Beneficial effects of the utility model:

[0020] 1. This device realizes the efficient combination of leaching technology and stabilization technology, making up for the shortcomings of single leaching technology, such as secondary pollution caused by chemical leaching agents and reduction of soil quality by leaching technology.

[0021] 2. This device uses a gravity sensor to control the carbon dosing chamber to intermittently add biochar to the soil after leaching, ensuring that the carbon material is fully mixed with the contaminated soil, with a large contact area and multiple adsorption sites, thereby improving the pollutant treatment effect.

[0022] 3. This device uses a gravity sensor to send a carbon dosing signal to the carbon dosing chamber, starts the delivery pump to deliver the biochar, and achieves automatic dosing, saving equipment and labor costs, and the carbon blocks used are economical.

[0023] 4. In terms of ecological effects, after the site is repaired, the residual biochar acts as a stable absorption source and nutrient regulator, which has an improving effect on the subsequent use of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the carbon injection plate of the embodiment of the utility model;

[0027] Figure 3 It is a specific flow chart of an embodiment of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a combined device for treating washed soil with biochar, including a device body, a washing module, and a biochar automatic stabilization module. An upward mud inlet 1 is provided at the upper part of the device body for feeding operation, and a spiral blade is provided at the inlet position where the mud inlet 1 is located. The added soil raw materials are crushed by the rotation of the spiral blade, and larger pieces of soil can be crushed to obtain smaller pieces of soil, which can be fully mixed with the added carbon blocks. A mud outlet 12 is provided at the lower part of the device body for discharging the mixed soil.

[0030] A leaching module and a biochar automatic stabilization module are arranged at the upper part where the equipment body is located. The leaching module sprays reagents into the inner cavity of the equipment body, and the biochar automatic stabilization module intermittently puts carbon blocks into the inner cavity of the equipment body. A stirring mechanism is arranged in the cavity where the equipment body is located. The stirring mechanism is used to stir and tumble the soil raw materials in the inner cavity of the equipment body so that the soil and the added carbon blocks are evenly mixed.

[0031] The elution module includes a medicine storage box 2 (for containing medicines) located on the upper part of the equipment body, and a spray hole 3 connected to the medicine storage box 2 through a conduit and extending into the inner cavity of the equipment body (the spray holes 3 are distributed in multiple groups, and the inner cavity of the equipment body is sprayed evenly, so that the sprayed medicines can be fully sprayed on the added soil). The medicines stored in the medicine storage box 2 are sprayed into the inner cavity of the equipment body through the spray hole 3. During the elution process, the ratio of soil mass to elution volume is 1:3-10, and the elution time is 24h. After spraying, this added agent can convert the activated heavy metals in the soil after elution into a residual state and a combined state again, which is convenient for removal, and can adsorb excess elution agent in the soil after elution to restore the physical and chemical properties and microecological environment of the soil.

[0032] The biochar automatic stabilization module includes a charcoal feeding plate 5, a charcoal feeding chamber 14, and a charcoal feeding pipe 15. The charcoal feeding plate 5 is located at the upper part of the inner cavity where the equipment body is located. The charcoal feeding chamber 14 contains charcoal blocks. The charcoal feeding chamber 14 is connected to the charcoal feeding plate 5 through the charcoal feeding pipe 15. At the same time, the charcoal feeding chamber 14 realizes intermittent delivery of charcoal blocks through the delivery pump 13. The charcoal blocks are delivered to the charcoal feeding plate 5 through the charcoal feeding pipe 15 and fall into the cavity where the equipment body is located. Then, the soil and the charcoal blocks are fully mixed and stirred by the stirring mechanism. At this time, biochar is a stable, porous, and carbon-rich material with a huge specific surface area obtained by slowly heating up and pyrolyzing and modifying waste organic matter under anaerobic or oxygen-limited conditions. The material is economical.

[0033] During specific use, a gravity sensor 9 is arranged below the device body. At this time, the gravity sensor 9 is supported by a base 10 located at the bottom. The gravity sensor 9 monitors the overall gravity change of the device body. When the preset value is reached, the gravity sensor 9 transmits the monitoring signal to the delivery pump 13, thereby realizing the intermittent delivery of carbon blocks by the delivery pump 13 to control the carbon feeding chamber 14.

[0034] The gravity sensor is used to send a carbon injection signal to the carbon injection chamber, and the delivery pump is started to transport the biochar, achieving automatic injection state, saving equipment labor costs. At the same time, the gravity sensor is used to control the carbon injection chamber to intermittently add biochar to the soil after leaching, ensuring that the carbon material is fully mixed with the contaminated soil, with a large contact area and multiple adsorption sites, thereby improving the pollutant treatment effect.

[0035] like Figure 3 As shown, for soils that still do not meet the standards or are not suitable for use after leaching, biochar treatment can be used to adsorb activated heavy metals in the soil after leaching, converting them back into residual and bound states. Biochar treatment can also be used to adsorb residual leaching agents during the remediation process of chemical leaching technology, reducing the damage of leaching agents to the physical and chemical properties and microecology of the soil.

[0036] The upper surface of the charcoal feeding plate 5 is provided with charcoal feeding channels 51 distributed in a row (there are multiple groups of such charcoal feeding channels 51 distributed in a row), and the charcoal feeding channels 51 are interconnected with the charcoal feeding pipe 15, so that the charcoal blocks can fall from the charcoal feeding channels 51 into the cavity where the equipment body is located.

[0037] The stirring mechanism includes an engine 7, a rotating shaft 6, and stirring blades 4. The rotating shaft 6 runs through the inner cavity where the device body is located, and stirring blades 4 are arranged on the periphery where the rotating shaft 6 is located. The rotating shaft 6 is rotated by the engine 7, thereby driving the stirring blades 4 located on the rotating shaft 6 to deflect synchronously, so that the soil carried in the inner cavity where the device body is located is fully mixed with the carbon blocks in the spraying state. During the rotation process, the extended stirring blades 4 will stir the soil carried in the inner cavity of the device body, driving the agent sprayed by the elution module and the carbon blocks supplied by the biochar automatic stabilization module to be fully and evenly stirred.

[0038] A layer of filter screen 8 is arranged at the inner bottom where the equipment body is located, and a waste liquid collection port 11 is arranged below the filter screen 8. When in use, since the elution module continuously sprays water into the soil, liquid will flow out in the actual use process. The filter screen 8 plays a role in blocking the soil and the flowing liquid, and the waste liquid generated in the mixing process is collected through the waste liquid collection port 11.

[0039] The waste liquid collection port 11 is located directly below the equipment body, and the mud outlet 12 is located at the bottom of the side where the equipment body is located.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A combined device for treating washed soil using biochar, comprising a device body, a washing module, and a biochar automatic stabilization module, characterized in that: The upper part of the equipment body is provided with an upward mud inlet (1) for feeding, and the lower part of the equipment body is provided with a mud outlet (12); A rinsing module and a biochar automatic stabilization module are arranged at the upper part where the equipment body is located, and a stirring mechanism is arranged in the cavity where the equipment body is located. The rinsing module sprays the reagent into the inner cavity of the equipment body, and the biochar automatic stabilization module intermittently puts the charcoal blocks into the inner cavity of the equipment body; the stirring mechanism is used to stir and roll the soil raw materials in the inner cavity of the equipment body to mix the soil and the charcoal blocks evenly; The biochar automatic stabilization module comprises a charcoal feeding plate (5), a charcoal feeding chamber (14), and a charcoal feeding pipe (15); the charcoal feeding plate (5) is located at the upper part of the inner cavity where the device body is located; charcoal blocks are contained in the charcoal feeding chamber (14); the charcoal feeding chamber (14) is connected to the charcoal feeding plate (5) through the charcoal feeding pipe (15); and the charcoal blocks are fed to the charcoal feeding plate (5) through the charcoal feeding pipe (15) and fall into the cavity where the device body is located.

2. The combined device for treating washed soil with biochar according to claim 1, characterized in that: The mud inlet (1) is loaded with spiral blades, and the added soil is crushed by the rotation of the spiral blades.

3. The combined device for treating washed soil using biochar according to claim 1, characterized in that: The shower module comprises a medicine storage box (2) located at the upper part of the device body, and a spray hole (3) connected to the medicine storage box (2) through a conduit and extending into the inner cavity of the device body, and the medicine stored in the medicine storage box (2) is sprayed into the inner cavity of the device body through the spray hole (3).

4. The combined device for treating washed soil with biochar according to claim 3, characterized in that: The spray holes (3) are distributed in multiple groups and can achieve uniform spraying of the inner cavity of the equipment body.

5. The combined device for treating washed soil with biochar according to claim 1, characterized in that: The carbon-adding chamber (14) realizes intermittent delivery of carbon blocks through a delivery pump (13).

6. The combined device for treating washed soil with biochar according to claim 5, characterized in that: A gravity sensor (9) is provided below the device body, and the overall gravity of the device body is monitored by the gravity sensor (9). When a preset value is reached, the gravity sensor (9) transmits the monitoring signal to the delivery pump (13), thereby enabling the delivery pump (13) to control the intermittent delivery of carbon blocks in the carbon feeding chamber (14).

7. The combined device for treating washed soil using biochar according to claim 1, characterized in that: The upper surface of the charcoal throwing plate (5) is provided with charcoal throwing channels (51) distributed in a row, and the charcoal throwing channels (51) are interconnected with the charcoal throwing pipe (15), so that charcoal blocks can fall from the charcoal throwing channels (51) into the cavity where the equipment body is located.

8. The combined device for treating washed soil using biochar according to claim 1, characterized in that: The stirring mechanism comprises an engine (7), a rotating shaft (6), and stirring blades (4); the rotating shaft (6) penetrates the inner cavity where the device body is located, and stirring blades (4) are arranged on the outer periphery of the rotating shaft (6); the rotating shaft (6) is rotated by the engine (7), thereby driving the stirring blades (4) located on the rotating shaft (6) to deflect synchronously, thereby achieving full mixing of the soil carried in the inner cavity where the device body is located with the carbon blocks in a spraying state.

9. The combined device for treating washed soil using biochar according to claim 1, characterized in that: A layer of filter screen (8) is arranged at the inner bottom of the device body, and a waste liquid collection port (11) is arranged below the filter screen (8), through which waste liquid generated during the mixing process is collected.

10. The combined device for treating washed soil with biochar according to claim 9, characterized in that: The waste liquid collection port (11) is located directly below the equipment body, and the mud outlet (12) is located at the bottom of the side where the equipment body is located.

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