224 results about "Soil treatment" patented technology

The invention relates to the technical field of rotary cultivators, in particular to a rotary cultivator with a residual film recycling function. Comprising a front wheel; first rotating shafts are fixedly connected to one sides of the two front wheels, second rotating shafts are fixedly connected to one sides of the two rear wheels, a recycling machine shell is jointly and rotationally connected between the two first rotating shafts and the two second rotating shafts, and a tillage machine is arranged on one side of the recycling machine shell. Through cooperation of a water pump, a second threaded rod, a spraying bin and a spray head, broken films on a screen mesh plate can be dissolved, soil blocks can be decomposed, the problem that a large amount of time is spent on sorting residual films and straw by workers in the follow-up process is solved, a first motor, an air pump, a second motor and the water pump are controlled through a controller, and the working efficiency is improved. Complex residual film recovery and soil treatment processes are integrated into a highly automatic and intelligent operation system, the soil humidity, the residual film density and the impurity content are monitored in real time through a sensor, the suction force of an air pump and the water pressure of a water pump are intelligently adjusted, and soil moisture loss and energy consumption are reduced to the maximum extent while it is ensured that residual films are efficiently recovered.

The invention relates to the technical field of soil treatment, in particular to an integrated saline grainfield soil improvement and remediation method. According to the method, precise irrigation, concealed pipe drainage, salt-tolerant crop planting and bioremediation technologies are comprehensively applied, and systematic treatment of the salinized soil is achieved. Precise irrigation dynamically regulates and controls the leaching depth and frequency on the basis of real-time soil salinity and moisture data, the underground water level is intelligently controlled in combination with an underground pipe drainage network, salt accumulation is effectively reduced, and water resource waste is avoided; according to the salt-tolerant crop and green manure rotation mode, salt damage is reduced through plant salt absorption and root system nitrogen fixation, soil organic matter accumulation and microbial community reconstruction are promoted through application of a microbial agent and biochar, and a sustainable soil improvement mechanism is formed. The intelligent monitoring system integrates multiple types of sensors, collects key indexes such as salinity, nutrients and pH values in real time, predicts the salinization trend and regulates and controls irrigation, fertilization and drainage equipment in a linkage mode, full-process automatic management is achieved, and the management precision and efficiency are remarkably improved.

The subject invention provides compositions and methods for reducing the carbon footprint of producing biofuels. Microbe-based soil treatment compositions are utilized to reduce greenhouse gas emissions resulting from the agricultural practices of producing feedstock crops.

The invention discloses a method for in-situ passivation of available cadmium in soil, and belongs to the technical field of heavy metal contaminated soil treatment. According to the method, the fulvic acid with the molecular weight being 100 kDa or above is applied to the acid mining area soil with the pH being 2-4.5 according to the adding amount of 3-20 gC / kg, the low-concentration cadmium pollution of the source being 4 mg / kg or below is removed, the concentration of effective-state cadmium is reduced, the cost is saved, the natural substance fulvic acid is used as the remediation agent, operation is easy and convenient, and the method is suitable for remediation of various mining area soil.

The invention discloses a synthetic microbial agent for treating uranium-contaminated soil and a preparation method of the synthetic microbial agent. The synthetic microbial agent is prepared from the following bacteria: P.adami, P.megatherium, bacillus subtilis, Artobacter volluticus, symbiotic fungi, Aspergillus niger, sulfate reducing bacteria and Shewanella. The symbiotic fungi are mucor lastein, mucor unimingguminum, mucor circinelloides, mucor dense, rhizopus arrhizus and phylum phthochytrium parasitic fungi. The prepared synthetic microbial agent and synthetic microbial embedded balls are applied to uranium-contaminated soil remediation, the key enzyme activity can be effectively improved, the soil metabolism function is enhanced, meanwhile, exchangeable uranium with high ecological risk is converted into stable and low-harm residual uranium, the mobility and bioavailability of uranium in soil are effectively weakened, and the uranium-contaminated soil remediation effect is improved. Therefore, immobilized remediation of uranium is realized, and a good soil uranium fixing effect is achieved.

The utility model is suitable for the technical field of agricultural mechanical equipment, and provides soil loosening equipment applied to traditional Chinese medicine planting. The mounting frame is arranged on the frame, a rotating motor is fixedly mounted on one side of the mounting frame, a rotating rod is rotatably mounted on the mounting frame, one end of the rotating rod is fixed with an output shaft of the rotating motor, and a plurality of soil turning knives are arranged on the rotating rod; the storage box is used for storing chemical fertilizers and is fixedly mounted on the frame, a discharging pipe is arranged at the bottom of the storage box, and a proportional valve is arranged on the discharging pipe; and the fertilizer screening box is arranged on the frame, and the fertilizer screening box is positioned behind the soil turning knife. According to the soil loosening equipment applied to traditional Chinese medicine planting, automation and high efficiency of soil treatment and fertilization operation are achieved, precise application of chemical fertilizer is ensured, and the soil quality and the crop growth environment are improved.

The utility model relates to the technical field of soil treatment and drying, and discloses a drying machine for soil treatment samples, which comprises a drying box, three hot-air blowers are arranged at the top of the drying box, filter screens are arranged at the input ends of the three hot-air blowers, a moving plate is connected to the inside of the drying box in a sliding manner, and a baffle is fixedly mounted on the outer wall of the moving plate. An arrow plate is arranged on the outer wall of the rotating disc, and a plurality of air outlet holes are formed in the outer wall of the drying box. According to the drying machine for the soil treatment sample, when the soil remediation sample needs to be dried, a handle is moved to drive a moving plate to move, soil to be dried is placed on a base plate, an air heater is started, a motor drives a rotating shaft to rotate, a knocking rod is driven to rotate, and a beating rod drives the base plate to move upwards; and the base plate moves downwards, the base plate vibrates, the effect of throwing up the soil through vibration can be achieved, the air heater can dry the soil, and the rapid and uniform drying effect is achieved.

The utility model discloses a kind of pollution site in situ enhanced risk management and control structure, it is related to contaminated soil treatment technical field. Including initiative prevention and control layer, the initiative prevention and control layer is set to the ground surface high-risk pollution area of contaminated soil, and the contaminated soil of certain thickness on ground surface selects in situ treatment and forms initiative prevention and control layer;Risk management and control layer, the risk management and control layer includes vertical barrier layer and horizontal barrier layer, the vertical barrier layer is in the periphery of contaminated soil and forms a sealed annular structure, the periphery area of contaminated soil is separated with surrounding clean soil, and the bottom of vertical barrier layer is embedded in underground weak permeable layer;The horizontal barrier layer is laid above initiative prevention and control layer, and the contaminated soil surface area is separated with surrounding environment.

The invention discloses a protective transplanting method for engineering disturbance low-latitude plateau sub-alpine meadow cotoneaster replicatus, which comprises the following steps: (1) investigating and screening rhizosphere microbial communities, and separating functional strains from soil; (2) in-situ plant growth regulator root irrigation treatment; (3) digging a plant-soil micro-ecological complex; soil blocks are wholly dug according to units, wherein the soil blocks comprise plants, root systems, rhizosphere soil, associated herbaceous plants and litters; (4) temporary culture and field planting: regularly maintaining and keeping humidity, and irrigating with a plant growth promoter; (5) adding a microbial inoculum into the soil, treating the soil with a matrix, and adding the screened functional microbial inoculum into the matrix; (6) transplanting; and (7) later maintenance and monitoring. Through an innovative method of combining a plant-soil micro-ecological complex, a plant growth regulator and a fungicide, the survival rate and the recovery speed of the cotoneaster replicatus in ecological restoration are improved, the adaptability of the cotoneaster replicatus in a severe environment is optimized, vegetation restoration is promoted, and the stable process of an ecological system is accelerated.

The invention discloses sludge treatment equipment and method for soil governing.The equipment comprises a supporting base, a sludge treatment mechanism comprises a mounting ring arranged in a treatment cylinder, a mounting groove is formed in the bottom of a connecting rod, a connecting pipe connected with a flow dividing box is mounted in the mounting groove, and a plurality of spraying holes are formed in the connecting pipe; a filter screen connected with the connecting rod is rotationally arranged in the magnetic ring; the method comprises the following steps: S1, conveying sludge into a treatment cylinder through a sludge pipe, S2, working a water pump, S3, exhausting air below a rotating plate through an air exhaust mechanism to enable the rotating plate to be in a negative pressure state, and S4, enabling the treated sludge to fall into a conical cylinder and finally discharging through a sewage discharge pipe. By means of multiple treatment modes of magnetic attraction, spiral mixing and negative pressure mixing separation, the problems that existing equipment cannot thoroughly remove heavy metal and is poor in purification effect are solved, and treated sludge can meet the follow-up application requirement of soil treatment.

The invention discloses auxiliary equipment for soft soil solidification. The auxiliary equipment is used for achieving efficient vibration exhaust and compaction in the soft soil foundation treatment process. The equipment comprises a vibration mechanism, a wire arrangement mechanism and a plurality of folding mechanisms distributed in the circumferential direction. The vibrating mechanism synchronously drives a plurality of vibrating rods through a double-head motor, so that multi-point uniform vibration is realized; the folding mechanism enables the vibrating bar to be folded during transportation and to be radially unfolded during operation, so that narrow space transfer and field deployment are facilitated; the wire arranging mechanism automatically releases or winds the steel wire flexible shaft to prevent the steel wire flexible shaft from being wound or excessively bent. The whole machine realizes time-sharing linkage of vibration and folding / wire arrangement functions through cooperation of a single motor and a one-way bearing, and an extra power source is not needed. A ground breaking block is arranged at the bottom of the equipment, and an assembly plate is arranged at the top of the equipment. The problems that in existing soft soil treatment, exhausting is insufficient, equipment is difficult to insert into a cohesive soil layer, and wiring is disordered are solved, and the device has the advantages of being compact in structure, convenient to operate, good in compaction effect and the like.

The present application relates to the technical field of soil treatment, in particular to a soil remediation system for solid waste multi-component joint activation, which comprises a boiler tail gas purification and waste heat cascade utilization unit, a biochar preparation unit, a low-rank coal slime preparation porous carbon unit, a power plant ash alkali metal leaching and residue activation unit, a mixed component composite activation unit and a compound fertilizer forming preparation unit; the boiler tail gas purification and waste heat cascade utilization unit is used for removing dust and acid gas, and the waste heat is used for preparing biochar by biomass pyrolysis and preparing porous carbon by low-rank coal slime; the present application can prepare soil remediation products with water and fertilizer retention and harmlessness by the organic and inorganic compounding of biomass, low-rank coal slime and power plant ash, which has important significance for the treatment and harmless remediation of special soil such as saline-alkali soil and desert soil.

The application discloses an auxiliary diagnosis method for red bayberry debilitation disease, which comprises collecting healthy red bayberry growth soil and suspected diseased red bayberry growth soil in the same area, and respectively determining urease activity of the soil; and comparing and analyzing urease activity determination results of the healthy red bayberry growth soil and the suspected diseased red bayberry growth soil. If urease activity of the suspected diseased red bayberry growth soil is significantly lower than that of the healthy red bayberry, it is indicated that the suspected diseased red bayberry is likely to have the debilitation disease; if there is no significant difference between urease activity of the suspected diseased red bayberry growth soil and that of the healthy red bayberry growth soil, it is indicated that the suspected diseased red bayberry does not have the debilitation disease. The application can assist in diagnosing the red bayberry debilitation disease, avoids subjective misjudgment of personnel observation diagnosis, and the method is simple, rapid and low in detection cost. In addition, the diagnosis result of the method can provide a reference for further orchard soil treatment and debilitation disease prevention of fruit farmers.

The utility model relates to soil treatment device technical field discloses a kind of soil heavy metal treatment devices for environmental protection engineering, including frame, the upper part of the frame is fixedly connected with liquid storage tank, the right side of the frame is rotatably connected with mounting shaft one before and after, the outer side of mounting shaft one is fixedly connected with wheel one, the upper right side of the liquid storage tank is fixedly connected with infusion pump, the input end of infusion pump is fixedly connected with liquid suction tube, the output end of infusion pump is fixedly connected with infusion tube, the upper right side of the middle part of the liquid storage tank is fixedly connected with U-shaped pipe, the both ends of U-shaped pipe are fixedly connected with spray head, the left side of the frame is rotatably connected with mounting shaft two before and after. In the utility model, by the cooperation between mounting shaft two, mounting sleeve, connecting rod, earth shovel, U-shaped pipe and spray head and other structures, the treatment device can efficiently treat soil heavy metal, and the soil heavy metal treatment efficiency is improved.

The invention discloses a polluted soil excavation method based on a circular drill hole, and relates to the technical field of soil treatment, and the polluted soil excavation method based on the circular drill hole comprises the steps that the longitudinal length of a rectangular area is determined according to the diameter of a circular drill bit; a plurality of rectangular areas are arranged side by side in the longitudinal direction to cover a polluted area; each rectangular area is excavated, so that deep contaminated soil is excavated; according to the technical scheme, the polluted area is divided into the multiple areas in the longitudinal direction, the multiple areas are covered with the multiple rectangular areas respectively, the longitudinal length of the rectangular areas is directly related to the circular drill bit, and therefore the circular drill bit can drill soil in the rectangular areas easily; and then the soil in each rectangular area is drilled, so that an irregular polluted area can be completely covered without omission, and it is ensured that all polluted soil bodies are cleaned and excavated.

The invention relates to application of a dazomet liquid preparation in soil treatment in the field of pesticides. The liquid preparation can be used for preventing and treating true and bacterial diseases, nematodes and weeds of crops, and has a remarkable synergistic effect on soil-borne bacteria, fungal diseases, root-knot nematodes and field weeds. The pesticide application mode can be selected from one or more of drip irrigation, flushing application, mist spraying and soil layer treatment, and the pesticide can be directly used or used after being diluted for multiple times during pesticide application. Besides, the core advantage of the application is that the application limitation of the traditional dazomet preparation is broken through, and the dazomet preparation is suitable for wide regions, especially suitable for low-temperature regions and environments with the soil temperature being lower than 10 DEG C, and is especially preferably applied to rice seedling raising fields in low-temperature regions; multiple operation modes such as soil mixing, pulping and rice hull mixing can be adopted in a low-temperature scene, the operation is convenient and fast, the actual field requirements are met, and the environmental adaptability and the application flexibility of the dazomet preparation are remarkably improved.

The utility model discloses a rotary tillage soil moisture leveling device for a soil moisture leveling plough, and belongs to the field of agricultural machinery. A plough frame and left and right plough shares mounted on the plough frame are arranged at the front end of the rotary tillage soil moisture leveling device, a double-end transmission gearbox is arranged above the plough frame, and the front side of the double-end transmission gearbox is in transmission connection with a power output device (such as a tractor). A rotary tillage knife rest, an upper soil retaining plate, a gear box, a knife shaft bearing seat assembly, a knife shaft, a soil shifting knife, a soil breaking knife, a rear soil retaining guide plate and the like are arranged at the rear end of the rotary tillage soil moisture leveling device. The gearbox is in transmission connection with the double-end transmission gearbox through a transmission device; the tool rest is connected with the plow frame through a special installation assembly and is provided with a suspension structure adapting to topographic relief. And the tail part is provided with an angle-adjustable soil plastering plate and an adjusting assembly. The machine can effectively adapt to different terrains, achieves efficient soil treatment and accurate soil moisture leveling, and is suitable for agricultural land leveling and soil moisture content treatment operation.

This invention relates to the field of soil treatment technology, specifically a method and its application for reducing compound fungicides in soil-plant systems by combining nano-silica and nitrification inhibitors. Nitrification inhibitors are used as a nitrogen management measure, and the application of nanomaterials influences soil abiotic properties and bacterial communities to drive the degradation of paclobutrazol and carbendazim. The application of nitrification inhibitors (DCD) produces multiple effects: significantly reducing carbendazim residues in soil-plant systems, paclobutrazol residues in soil, and NO3 in plants. ‑ -N and promote the content of soluble sugars and proline in plants. DCD reduces the activity of the soil electron transport system and β-glucosidase activity, while the addition of nano-SiO2 can mitigate this negative effect. Nano-SiO2 selectively enhances the performance of DCD in reducing compound fungicide residues in pak choi and reducing paclobutrazol residues, but hinders the degradation of carbendazim in pak choi.

The invention relates to the field of soil treatment, in particular to pollutant separation equipment for soil detection. A sliding plate is arranged at the upper end of the filter screen; a masher containing a middle pipe with a liquid cavity and a sleeve is arranged in the hot cylinder; a scraping plate is arranged at the lower end of the top cover; a main cutter is arranged at the lower end of the middle pipe, an auxiliary cutter is arranged above the main cutter and provided with a spray head communicated with the liquid cavity, and a spray head is arranged on the side wall of the hot cylinder. A pneumatic sliding table driving sliding plate is arranged on the support, a reciprocating air cylinder driving sleeve is arranged on the top cover, and a main motor drives a middle pipe through a bevel gear and a magnetic shaft. During operation, soil is put in from the feed port, blending liquid and clear water are injected into the spray head and the nozzle respectively, the main and auxiliary cutters cut up the soil, the rigid paddle and the elastic paddle stir, the hot cylinder heats, steam is discharged through the air pipe, the scraper prevents condensation, the sliding plate moves to enable slurry to enter the dehydrator through the filter screen, and the soil is recycled after dehydration. The equipment is high in separation efficiency, durable in parts and suitable for separation of soil pollutants.

The application discloses a kind of organic soil treatment devices for soil remediation engineering, and relate to soil remediation technical field;The organic soil treatment device for soil remediation engineering, the feed inlet of the pretreatment structure is provided with drying device, and the discharge port of the pretreatment structure is provided with conveying device;The organic soil treatment device for soil remediation engineering is preliminarily crushed by being provided with pretreatment structure, using crushing shaft and rolling hammer, while screening inclined screen is used to screen the soil after primary crushing, and the irregular soil blocks are driven for secondary crushing by cooperating with vertical auger, so that the contaminated soil is repeatedly broken, the soil can be uniformly broken, and the soil can be fully reacted after entering the drying device, thereby improving the processing effect of the device.

The invention discloses a method for efficiently and greenly cultivating morchella esculenta in a cherry orchard, and belongs to the technical field of edible mushroom cultivation. According to the technology, morchella esculenta interplanting cultivation is carried out in an idle period (May to November) from cherry orchard harvesting to leaf falling; the method comprises the key technologies of cherry root system protection type shallow soil treatment, arched shed type precise sun shading, green soil disinfection of quicklime, high-temperature shed braising and biological agents, compounding of waste with exogenous nutrition bags, pest and disease damage prevention and control through biological agents, mushroom dreg returning-to-field ecological circulation and the like. The technical problems that during interplanting of morchella esculenta on fruit trees, root systems are prone to damage, chemical agent residues exist, the facility cost is high, and the land utilization rate is low are solved. By adopting the method, the Mu yield of the morchella can reach 200-250kg, the production cost is saved by more than 25%, the pesticide residue meets the green food standard, the ecological cycle cultivation of the cherries and the morchella is realized, and the land utilization efficiency and the comprehensive economic benefit are remarkably improved.

The application belongs to the technical field of shield soil treatment, and discloses a mobile shield soil and reduction material mixing and stirring device, which comprises a movable base, a stirring system and a driving system are arranged on the base, the driving system is located below the stirring system and is in transmission connection with the stirring system; the stirring system comprises a stirring barrel, a stirring assembly is arranged in the stirring barrel, and the stirring assembly is in transmission connection with the driving system; a plurality of feeding assemblies are arranged at the top end of the stirring barrel, and the feeding assemblies are in communication with the inner cavity of the stirring barrel; the stirring assembly comprises a stirring column in transmission connection with the driving system, a plurality of torque sensors are arranged on the stirring column at equal intervals, and the torque sensors are in transmission connection with the feeding assemblies through a control system. The application has compact structure, can realize efficient and harmless treatment and disposal of shield soil in the shield tunneling process, reduces environmental pollution caused by shield soil, saves the disposal cost of shield soil, and the treated shield soil meets the environmental protection standard and can be recycled.

There was no way to reduce the environmental impact of surface soil generated when demolishing ordinary houses and other buildings. [Solution] When demolishing general houses and other buildings, the surface soil generated is treated with a surface soil treatment material containing at least phosphate, and the surface soil treated with this surface soil treatment material is then treated using a surface soil treatment method to reduce the amount of fluorine and lead that leach out, which have an impact on the environment. Thus, a method and treatment material are provided to insolubilize fluorine, which has an impact on the environment.

The present application relates to the technical field of pesticides, and discloses a phase change eutectic carrier embedded with a photothermal agent as well as a preparation method and application thereof.The phase change eutectic carrier embedded with the photothermal agent mainly comprises a photothermal agent, a fatty acid, an organic solvent and water.The preparation process of the preparation is simple, the conditions are mild, a large number of additives are not needed, and the preparation can be quantitatively prepared.The dispersion and utilization rate of the bactericide can be improved through eutectic, and the effectiveness of the bactericide can be improved.The preparation is suitable for various application modes such as seed coating and soil treatment, can play various synergistic functions such as temperature response release, prolonging drug retention time, enhancing adhesion and permeability on the surface of pathogenic bacteria, and is a kind of green and efficient bactericide dosage form, which has a wide application prospect in green and intelligent agriculture.

The application discloses an intelligent management system and method applied to strawberry disease identification, relates to the technical field of intelligent management of strawberry soil-borne disease prevention and control, and collects standardised shed body basic information and soil pathogen data; determines the shed body as a new shed, an old shed and a transition shed based on planting years and pathogen threshold values; generates a differentiated prevention and control scheme according to the shed type, wherein the scheme comprises soil treatment and above-ground prevention and control measures; then, the scheme is converted into a standardised execution guide containing pesticide calculation and is pushed, the pesticide calculation adopts corresponding formulae; finally, pathogen changes are monitored every month; and the shed type and the scheme are dynamically adjusted according to the monitoring results.

This invention discloses a method for improving saline-alkali land in semi-arid regions to enhance plant diversity, comprising the following steps: S1, construction of treatment units; S2, arrangement of treatment units; S3, preliminary soil treatment; S4, planting of plants; and S5, intensive soil treatment. This invention addresses the problems of high salinity and species scarcity in saline-alkali land in semi-arid regions, providing a complete treatment method. By deploying multiple treatment units to form a treatment system, combined with the soil conditioner specifically designed for this invention, the high salinity of saline-alkali soil in semi-arid regions can be alleviated. Simultaneously, by incorporating a phytoremediation system primarily composed of alkali plantations, the biodiversity of exposed saline-alkali land in semi-arid regions can be effectively enhanced. Furthermore, considering seasonal factors and other factors such as rainfall, a one-year treatment plan is ultimately developed. After treatment, the land can be selectively developed into ornamental wetlands or agricultural land, possessing significant economic value.

This invention relates to a method for preparing nutrient soil based on coal gangue-induced gypsum crystallization and its application in saline-alkali land improvement. It belongs to the field of solid waste resource utilization technology and solves the technical problem of the lack of an integrated method for "coal gangue soil treatment, directional conversion of pyrite FeS2, and in-situ preparation of gypsum CaSO4·2H2O". The method includes the following steps: Step 1, crushing the coal gangue and activating the coal gangue powder; Step 2, mixing cow dung, straw, and FeS2 to obtain initial organic material, adjusting the carbon-nitrogen ratio, and performing aerobic fermentation on the initial organic material to obtain organic fermented material with peak sulfur-oxidizing bacteria abundance; Step 3, uniformly mixing the activated coal gangue powder and organic fermented material, and placing it in a fermentation tank for controlled maturation. The coal gangue-based nutrient soil produced by this method has excellent chemical properties, good porosity, and stable and abundant aggregates. Gypsum CaSO4·2H2O can be used as a core component for saline-alkali land improvement.

The invention relates to a construction site polluted soil treatment system and method, and belongs to the technical field of pollution treatment. The construction site contaminated soil treatment system comprises a heating well, a recovery treatment device, an extraction well, a vacuum generation device, a heat insulation layer, a lifting device, a sensor group and a control module. The heating well is arranged under the ground of a polluted area; the extraction well comprises a first section arranged under the ground of the polluted area and a second section exposed out of the ground; the heat insulation layer covers the ground of the polluted area; the sensor group detects the surface temperature of each position in the polluted area; the control module compares and determines the position with the highest surface temperature as a high-concentration point according to the surface temperature of each position; and the lifting device is controlled to lift the heat insulation layer covering the area between the high-concentration point and the second section, so that a flow channel is formed between the lifted heat insulation layer and the ground. According to the construction site polluted soil treatment system, directional flow guide can be achieved, and high-concentration airflow can be obtained.

This invention provides a method for removing perfluorinated and polyfluoroalkyl (PFOA) compounds based on co-heating of biomass and contaminated soil, belonging to the field of soil treatment technology. The method includes the following steps: mixing biomass with soil containing PFOA compounds to obtain a mixture; co-heating the mixture under an inert gas atmosphere to obtain soil with PFOA compounds removed; wherein, during the co-heating process, the biomass in the mixture pyrolyzes to generate biochar and reducing gases. The reducing gases are used to promote the degradation of PFOA compounds, and the biochar is used to capture undegraded PFOA compounds in situ. This method is characterized by simple operation, high treatment efficiency, excellent energy utilization, and strong environmental safety, and is suitable for large-scale remediation of contaminated soil.

The utility model discloses a remediation device for soil treatment, which relates to the technical field of soil treatment and comprises two main body plates, a fixing plate is fixedly mounted at the tops of the two main body plates, a pesticide box is fixedly mounted at the top of the fixing plate, a water pump is fixedly mounted on one side of the pesticide box, and the output end of the water pump is fixedly connected with a conveying pipe. Wherein the bottom of one main body plate is fixedly provided with a flow dividing box, the flow dividing box is fixedly connected with the conveying pipe, one side of each main body plate is fixedly provided with a second motor, and one side of one main body plate is rotationally connected with two rotating shafts. And the agent is conveyed into the flow dividing box through the conveying pipe, the purpose of loosening the deep soil layer is achieved through rotation of the multiple rollers, the agent can be fully fused with the deep soil layer through the multiple liquid spraying holes, and the remediation effect is improved.