375 results about "Pollution Remediation" patented technology

The invention discloses a simulation-optimization method for a pollution site groundwater pumping-injection-treatment pollution remediation system based on a multiform evolution search normal form. The method comprises the following steps: constructing a groundwater flow model and a pollutant solute transport model; the method comprises the following steps: determining a management objective function and constraint conditions of hydraulic control of an underground water pollution range, establishing an underground water pollutant treatment model, optimizing underground water pumping and injection treatment of a pollution site by adopting BLMFO, solving the problem of interdependence between an upper-layer global target and a lower-layer local target through nested optimization, and constructing an auxiliary task by utilizing MFO; state variables are updated through the groundwater flow model and the pollutant solute transport model, a management objective function value of the groundwater pollutant treatment model is calculated, and whether constraint conditions are met or not is judged; meanwhile, decision variables are selected by optimizing the groundwater pollutant treatment model, and state variables are updated by returning to the groundwater flow model and the pollutant solute transport model.

The invention provides a contaminated site remediation technology scoring system which comprises a multi-dimensional evaluation index system construction module, a situational weight dynamic adjustment module, a remediation technology applicability scoring module, an uncertainty analysis and sensitivity test module, a scoring result visualization module, a technical scheme sorting and screening unit and the like. Through four innovations of a dynamic weight adaptation mechanism, a multi-model fusion scoring algorithm, a technology combination scheme evaluation module and uncertainty robust analysis, the problems of single dimension, weight solidification, difficulty in quantification of a synergistic effect and the like in pollution remediation technology evaluation are systematically solved; and an objective, efficient and transparent intelligent decision-making tool is provided for repairing a complex polluted site.

The invention provides a multi-modal big language model inference engine which comprises a pre-training big language model adaptation layer, a pollution remediation knowledge graph enhancement module, a multi-modal information understanding and fusion unit, a technology implementation optimization module and an inference chain and decision interpretation generator. The system adopts a hierarchical modular design, all components communicate through a standardized API interface, efficient and stable data circulation is ensured, and the problems of knowledge application limitation, opaque reasoning process, difficulty in professional knowledge fusion, knowledge updating lagging, limited multi-modal data processing capability and the like in the existing contaminated site remediation decision process are solved.

The invention relates to the technical field of environment-friendly additives, and discloses an environment-friendly additive for soil pollution remediation and an application method thereof.The environment-friendly additive is prepared from 5-20 parts of nano zero-valent iron, 2-15 parts of a nano carbon material and 3-18 parts of a nano mineral composite material; 5-25 parts of biochar, 2-10 parts of microbial flora and 1-10 parts of a plant source extract; 1-8 parts of a pH responsive material; 2-10 parts of a microcapsule material; the particle size range of the nanoscale zero-valent iron is 10-100 nm, and SiO2 or C is coated on the surface of the nanoscale zero-valent iron; the nano carbon material is selected from activated carbon nanoparticles, graphene and carbon nanotubes. The carbon-coated nano zero-valent iron is adopted, so that the technical effects of improving the oxidation resistance of the material and prolonging the active life are achieved. Compared with a traditional technical scheme without coating nZVI, the problems that the composite material is prone to oxidation inactivation and insufficient in long-term repair capacity are solved, and the composite material has more stable heavy metal removal performance in a complex environment.

The invention relates to a self-repairing concrete complexing agent and a preparation method thereof, and belongs to the technical field of concrete.The self-repairing concrete complexing agent is prepared from 1-4 parts of microorganism induction repairing agent, 2-6 parts of nanometer wollastonite, 10-15 parts of slow-release repairing liquid and 0.02-0.12 part of magnesium oxide. Triple repair mechanisms of microbial mineralization, chemical gel and nano-filling are fused, crack initiation and expansion to a stable whole stage are covered, the repair system is far better than a single repair system, the slow release liquid realizes on-demand release of the repair agent, one-time consumption failure is avoided, durability is improved by 50% or above, nano wollastonite and magnesium oxide micro-expansion synergistically enhance compactness, and the repair effect is good. Meanwhile, the method is compatible with an existing concrete production line, complex equipment is not needed, energy consumption is reduced, the use amount of components is small, microbial metabolism and natural minerals are further utilized, pollution of chemical expanding agents is reduced, only water triggering is needed in the repairing process, no toxic by-product is generated, and the method meets the green building material standard.

The invention relates to the technical field of environmental pollution remediation, in particular to a refuse landfill coupling contaminated soil remote remediation system and method. The method comprises the following steps: carrying out deep stratified sampling and soil sample characteristic classification on a remotely repaired polluted soil heap to obtain remotely repaired soil samples corresponding to different pollution types; purified biogas is obtained to serve as a heat source for organic pollution desorption and conversion and solidification and stabilization coupling remediation, and a soil sample containing heavy metal after solidification and stabilization remediation is generated; carrying out chemical environmental assessment analysis and cyclic remediation treatment on the soil sample containing the heavy metals after solidification and stabilization remediation to generate a soil sample after organic pollution and heavy metal remediation; and carrying out fly ash landfill and reutilization on the soil sample subjected to organic pollution and heavy metal remediation to generate the remedied remote fly ash landfill and reutilization soil. Refuse landfill resources and remote polluted soil remediation can be combined to realize corresponding soil recycling.

The invention discloses alkali-producing cadmium-tolerant acinetobacter capable of increasing the pH value of soil and application of the alkali-producing cadmium-tolerant acinetobacter, and belongs to the technical field of microorganisms, the alkali-producing cadmium-tolerant acinetobacter is preserved in the China General Microbiological Culture Collection Center (CGMCC), the number of the alkali-producing cadmium-tolerant acinetobacter is CGMCC No.33619, and the alkali-producing cadmium-tolerant acinetobacter belongs to proteobacteria and pseudomonas. The strain can increase the environmental pH value from 6.0 to 8.0 through metabolism, and stably grows in an environment with the cadmium (Cd < 2 + >) concentration as high as 20 ppm. The strain can be applied to the fields of acid soil improvement, cadmium pollution remediation, industrial wastewater treatment, fermentation engineering and the like. The method has the advantages of being environmentally friendly, efficient, stable, applicable to multiple scenes and the like, and a novel microbial resource is provided for heavy metal pollution treatment and soil ecological restoration.

The invention provides a site pollution remediation technology carbon emission level comprehensive evaluation method coupled with environmental economic impact analysis. The method comprises five links of evaluation boundary determination, carbon emission accounting, environmental impact analysis, remediation cost measurement and calculation, expert score evaluation and the like. The carbon emission accounting adopts an IPCC emission factor method, the environmental influence analysis adopts an LCA ReCiPe 2016 method, and the repair cost calculation comprises construction cost accounting and carbon emission cost accounting. According to the technical scheme, on the basis of calculating the carbon emission of the restoration activity, the restoration efficiency, the restoration cost and the overall environmental impact analysis are introduced, the carbon emission level comprehensive evaluation method which gives consideration to carbon reduction, decontamination, greenness and economy is formed, and the practical guidance effect of the evaluation result is improved. The method can be used for comparing the carbon emission levels of different site pollution remediation technologies, can also be used for evaluating and comparing the carbon emission levels of different construction schemes of the same remediation technology, provides reference for remediation decision making, and has good application prospects.

The invention discloses a complex microbial inoculant for treating underground water as well as a preparation method and application thereof, relates to the field of sewage treatment, and aims to solve the problem that TBBPA and nitrate in underground water are difficult to remove at the same time in an existing biological treatment method. The composite microbial agent is prepared from pseudomonas koreensis Y5-11, acinetobacter pidermatum LYS-5, Pseudomonas sp. Y39-6 and psychrophilic bacteria F5-6, and the pseudomonas sp. Y5-11, the acinetobacter pidermatum LYS-5, the Pseudomonas sp. Y39-6, the psychrophilic bacteria F5-6 and the psychrophilic bacteria F5-6 are added into the microbial agent. The four strains are respectively subjected to fermentation culture, and the four fermentation liquids are mixed to prepare the complex microbial inoculant. The four bacteria in the complex microbial inoculant have a stronger metabolism complementation effect, and the effect on composite pollution remediation is more remarkable. The complex microbial inoculant is used for removing TBBPA and nitrate in underground water at the same time, the complex microbial inoculant has biodiversity, and the treatment result conforms to the water quality characteristics of the underground water.

The invention relates to the technical field of soil remediation, and provides a soil pollution remediation process which comprises the following steps: distributing points in grids of an area to be remediated, measuring the content of heavy metals and the concentration of organic pollutants, applying multi-frequency microwave radiation, synchronously applying ultrasonic treatment, and injecting a complex microbial inoculant containing sphingomonas, aspergillus niger spores and a nitrogen and phosphorus nutrient solution. A direct-current electric field is applied, pH, oxidation-reduction potential Eh and temperature parameters are monitored and measured in real time through an embedded sensor, a repair by-product recovery system is arranged, the purity of recovered metal is not lower than 98%, and mobile repair equipment is used in a matched mode. According to the method, the pollution degree is accurately quantified by constructing the pollution index PI, and dynamic regulation and repair are realized in combination with real-time monitoring parameters of a sensor. The pollutant removal efficiency is improved through the synergistic effect of multiple technologies, metal resource recovery is achieved through a repair by-product recovery system, traditional problems are solved, and efficient and environment-friendly repair is achieved.

The invention relates to a biochar material for repairing cadmium and tetracycline combined pollution in a water body as well as preparation and application of the biochar material, and belongs to the technical field of water body pollution repairing. Comprising the following steps: (1) cleaning, drying and grinding plant tissues of solanum nigrum plants after the cadmium-polluted soil is repaired by fungi and solanum nigrum, so as to obtain solanum nigrum plant tissue powder; and (2) pyrolyzing the black nightshade plant tissue powder at 400-600 DEG C for 1-3 hours, cooling to 20-30 DEG C, and grinding to obtain the biochar material for repairing cadmium and tetracycline combined pollution in the water body. According to the invention, the plant tissue of the nightshade plant after the cadmium-polluted soil is repaired by the combination of fungi and nightshade is used as the raw material of the biochar material for the first time, so that the resource utilization of the polluted soil repairing plant is realized. The problem of plant treatment after polluted soil remediation is solved, consumption of extra resources is avoided, and the sewage treatment cost is greatly reduced.

The invention relates to the technical field of soil heavy metal pollution remediation, in particular to a heavy metal cadmium pollution remediation neural network model, which comprises the following steps: S1, acquiring and preprocessing environmental factor data; s2, constructing a cadmium content prediction model: establishing an initial model structure, carrying out model training based on the preprocessed environmental factor data, calculating the contribution degree of each environmental factor in the model by utilizing an interpretability analysis method, and constructing an optimization objective function with prediction precision and model complexity by taking the environmental factor contribution degree as an interpretability constraint; performing iterative optimization on the model structure based on the optimization objective function to obtain a cadmium content prediction model; and S3, predicting the cadmium content of the rice based on the cadmium content prediction model, and optimizing agricultural measures based on a prediction result. By means of the scheme, accurate prediction and scientific explanation of the cadmium content of the rice are achieved, and the practicability of the model in farmland heavy metal cadmium pollution remediation is improved.

The invention discloses a farmland heavy metal restoration path planning system based on unmanned aerial vehicle remote sensing data driving, and relates to the technical field of farmland restoration, and the system comprises a data acquisition module which is configured to collect real-time remote sensing image data; the pollution remediation sub-region division module is configured to divide pollution remediation sub-regions; the attribute identification module is configured to identify land parcel attribute information; the restoration means evaluation module is configured to evaluate an initial restoration coefficient; the pollution remediation subarea association effect evaluation module is configured to evaluate a remediation migration effect; the composite repair coefficient calculation module is configured to comprehensively evaluate a composite repair coefficient; the global remediation optimization module is configured to globally plan a heavy metal remediation means implemented in each pollution remediation sub-region; and the scheme output module is configured to output a repair path of each heavy metal repair means. The method has the advantages that powerful intelligent decision support is provided for efficient, accurate and synergistic remediation of heavy metal pollution of the complex farmland.

The invention discloses a sodium alginate embedded iron-carbon microcapsule material for repairing cadmium and arsenic polluted soil and a preparation method of the sodium alginate embedded iron-carbon microcapsule material, and belongs to the technical field of soil heavy metal pollution repairing materials. The material comprises straw biochar, high-iron steel slag powder, a sulfydryl acetylated chitosan-iron monatomic cluster compound, a boron-doped graphitized carbon coated cobalt ferrite nanosheet, sodium alginate, calcium chloride and sodium carbonate. Wherein the sulfydryl acetylated chitosan is prepared by reacting chitosan with sulfydryl acetic anhydride, dialyzing and drying, and performing solvothermal reaction with ferric nitrate under high pressure. The preparation method comprises the following steps: pyrolyzing and drying the straw biochar, reacting the high-iron steel slag with sulfuric acid, adding the biochar, adjusting the pH value, adding sodium carbonate, mixing to obtain an iron-carbon-based passivation material, mixing with two modified compounds, mixing with a sodium alginate solution, dropwise adding a calcium chloride solution, and stirring and curing. The material can be applied to remediation of cadmium and arsenic polluted soil.

The invention belongs to the technical field of heavy metal soil pollution remediation, and particularly relates to a heavy metal tolerant bacterial strain and application thereof, the bacterial strain is named as Proteus mirabilis D2 and has been preserved in Guangdong Microbial Culture Collection Center on December 04, 2024, and the preservation number is GDMCC No: 65293. According to the invention, effective reduction of biotoxicity of culturable proteus mirabilis (P.mirabilis D2) with heavy metal tolerance and MICP functions on soil polluted by high cadmium, lead and zinc is realized, and corresponding parameters of technical application are determined.

The invention provides a site pollution abatement agent injection method and system, and belongs to the technical field of pollution remediation. The method comprises the following steps: determining an in-situ injection agent; constructing a three-dimensional site model; based on the optimal injection parameters of different soil texture types, injection points are distributed in the three-dimensional site model, and an injection point vector point location map is obtained; according to the three-dimensional pollution space distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil texture types, the injection point vector point location map and the medicament injection associated equation, generating a medicament injection scheme based on three-dimensional site model driving; the medicament injection scheme is guided into an injection equipment control system, and medicament injection is executed; and when the site pollutant remediation result does not reach the preset standard, updating the three-dimensional site model based on the current site, and repeating the steps until the site pollutant remediation result reaches the preset standard. The consistent distribution of the medicament injection space and the pollution space is ensured, the intelligent and accurate control of medicament injection is improved, and the medicament consumption is reduced.

The invention relates to the technical field of soil heavy metal pollution remediation, and particularly discloses a preparation method of iron-modified biomass charcoal, which comprises the following steps: preparing garden waste into biomass charcoal (PBC), and then carrying out iron modification by using FeCl3 to obtain iron-based biomass charcoal (PIBC). The invention further provides a method for repairing the cadmium-arsenic combined polluted soil through the iron-modified garden waste biochar. The method comprises the steps that the iron-modified biomass charcoal prepared through any method is added into the soil; the iron-modified biomass can be applied as a base fertilizer at one time, and is turned over to be fully and uniformly mixed with a plough layer of soil. By adopting the method disclosed by the invention, the bioavailability of Cd / As in the soil can be synchronously reduced, and waste resources are utilized to realize pollution control by waste.

This invention discloses an electrically controlled enrichment catalytic membrane, its preparation method, and its application in water treatment, belonging to the field of environmental organic pollution remediation technology. The electrically controlled enrichment catalytic membrane comprises a substrate layer and a copolymer coating layer with reversible electro-oxidation-reduction properties. The substrate layer is a titanium suboxide conductive ceramic membrane with a pore size of less than 1 micrometer, and the copolymer coating layer is an organic blend polymer TMA containing nitro radical functional groups. x -co-TMPMA (1‑x) Where x% represents the degree of oxidation. This invention also provides an application of the above-mentioned electrically controlled enrichment catalytic membrane in water treatment for the removal of organic pollutants. The electrically controlled enrichment catalytic membrane is used as a filter membrane in an electrochemical water treatment device. Two filter membranes are connected to the two poles of an AC power system, with the positive and negative poles reversing during a cycle. The polluted solution is controlled to flow sequentially through the two filter membranes. By adjusting the positive and negative bias parameters on the filter membranes, hydrophobic organic pollutants in the polluted solution are adsorbed and oxidized for removal. This method is energy-saving, environmentally friendly, and easy to operate.

The invention discloses hydrogen slow-release particles based on biochar-magnesium hydride and a preparation method of the hydrogen slow-release particles. The hydrogen slow-release particles are formed by mixing magnesium hydride with the purity larger than 99%, biochar and an adhesive. The high-purity magnesium hydride finished product is adopted, the environment heavy metal pollution repairing function of the biochar is utilized, the hydrogen release time in magnesium hydride is prolonged, crop growth and environment pollution repairing are promoted through controllable slow-release hydrogen, and crop growth is promoted.

The invention provides an intelligent in-situ remediation system and method for river and lake polluted bottom mud, and relates to the technical field of river and lake bottom mud pollution remediation. The system comprises a bottom mud pollution enrichment and purification device, a bottom mud pollution in-situ monitoring device, a bottom mud water content in-situ tester, an intelligent monitoring and control system, a vacuum negative pressure device, a buoy and a floating ball. The bottom mud pollution enrichment and purification device, the bottom mud pollution in-situ monitoring device and the bottom mud water content in-situ tester are connected with floating balls and then inserted into bottom mud, and the intelligent monitoring and control system and the vacuum negative pressure device are installed on a buoy located on the water surface. According to the invention, the sediment pollution in-situ monitoring device, the sediment water content in-situ tester, the sediment pollution enrichment and purification device and the like are coupled with the intelligent monitoring and control system, so that rapid response and intelligent in-situ remediation of sediment pollution are realized, and the problems of hysteresis quality, blindness and the like in the existing remediation technology are solved; the bottom mud pollution remediation efficiency is obviously improved.

The invention belongs to the technical field of soil heavy metal pollution remediation, and discloses a heavy metal pollution soil bioremediation method and system based on soil metagenome sequencing, and the method comprises the following steps: carrying out gene sequencing on experimental microorganism class groups in heavy metal pollution soil to determine functional microorganisms containing heavy metal resistance genes; heavy metal resistant microorganism species in the soil can be accurately identified by judging whether functional genes are contained or not, and ecological unbalance possibly caused by blind introduction of alien species is avoided; a remediation strategy taking a microbial resistance mechanism as a core can effectively reduce the bioavailability of heavy metals in the soil, and also can improve the physicochemical properties of the soil through metabolic activity to form a sustainable remediation effect; the method has the advantages of being environmentally friendly, controllable in cost, lasting in effect and the like, and an innovative path is provided for soil ecological function restoration.

The invention discloses a soil remediation material as well as a preparation method and application thereof, and belongs to the technical field of solid waste treatment and soil pollution remediation. The soil remediation material comprises 20-50 parts of phosphate tailings, 15-20 parts of phosphogypsum, 1-25 parts of ferric salt, 5-20 parts of charcoal, 5-15 parts of zeolite, 5-10 parts of potassium feldspar and 1-6 parts of a microbial agent. In addition, the invention also provides a preparation method of the soil remediation material, which comprises the following steps: dissolving ferric salt in water, adding phosphate tailings to obtain a suspension, then adjusting the pH value of the suspension to 7-8, and reacting to obtain phosphate tailings and ferric salt hydrolysate; stirring and mixing phosphogypsum, phosphate tailings, the iron salt hydrolysate and the like in proportion to obtain a mixed material; and aging the mixed material, and granulating to obtain the soil remediation material. The soil remediation material provided by the invention can effectively remove cadmium and arsenic in soil under the cooperation of all the components.

The invention discloses a remediation agent for high-concentration hexavalent chromium polluted soil and a preparation method and a remediation method thereof, and belongs to the technical field of soil pollution remediation. The remediation agent for the high-concentration hexavalent chromium contaminated soil comprises an acidic precursor, an iron-sulfur reducing agent and a synergist, the acidic precursor comprises organic acid and propylene glycol alginate; the iron-sulfur reducing agent comprises an iron-based reducing agent and a sulfur-based reducing agent; the synergist is prepared from sophorolipid and alkyl glucoside. The remediation agent can be used for high-concentration hexavalent chromium contaminated soil, hexavalent chromium in the soil is exposed in a Cr < 6 + > ion form as much as possible by replacing the hexavalent chromium in the soil, then the hexavalent chromium is converted into trivalent chromium by using a reducing agent, and the removal efficiency of the hexavalent chromium reaches up to 99.6%. In addition, the soil remediation agent is simple in use mode, rapid and thorough in reaction and lasting in effect.

The invention relates to the field of soil heavy metal pollution remediation, and discloses a heavy metal pollution soil remediation method based on a biochar loading technology, a biochar spiral chiral topological structure is constructed through femtosecond laser etching, a CdS quantum dot and graphene oxide composite layer is loaded, and the heavy metal selective adsorption and photocatalytic reduction ability is enhanced; a repairing agent is dynamically released in combination with a magnetic field response type microcapsule, multi-physics field parameters are optimized by utilizing a reinforcement learning algorithm, and accurate regulation and control of heavy metal migration-transformation-fixation are realized; an ultraviolet light triggered self-repairing mechanism is introduced to repair microcapsule damage, and pyrolysis oxidation and acid leaching processes are synchronously adopted to recover heavy metals and regenerate biochar. According to the invention, the defects of poor material selectivity, uncontrollable release and non-circulation in the prior art are overcome, and efficient targeted repair and resource recovery are realized.

The invention discloses a preparation method of an iron-doped cerium-based perovskite type high-selectivity Cu ion capture stabilizing agent and application of the stabilizing agent in heavy metal pollution remediation, and the stabilizing agent is prepared through a sol-gel method and comprises the steps that cerous nitrate and citric acid are dissolved in water, and the mixture is heated and stirred to be gel-shaped; standing the gel solution in a drying oven at a constant temperature to obtain a Fe-Ce-PVSK precursor; grinding the precursor into powder, putting the powder into a quartz boat, and calcining in an air atmosphere through a horizontal tube furnace to obtain a product; and finally, washing to be neutral to obtain the iron-doped cerium-based perovskite stabilizing agent. Due to the high oxygen vacancy concentration and rich active sites, the stabilizing agent has high selectivity and high adsorption capacity and has specific capturing capacity on Cu < 2 + >. The preparation method has mild reaction conditions. The stabilizing agent can effectively reduce the bio-availability of heavy metals in a polluted matrix, promote healthy growth of plants, and realize pollution restoration and ecological function recovery at the same time.

The invention discloses an electrochemical water treatment method based on a TEMPO modified ceramic membrane, and belongs to the technical field of environmental organic pollution remediation. The electrochemical water treatment method comprises the following steps: arranging two TEMPO modified ceramic membranes as filtering membranes in electrochemical water treatment equipment at intervals, wherein the two filtering membranes are respectively connected with a positive electrode and a negative electrode of an alternating current system; the method comprises the following steps: adding a to-be-treated pollution solution into electrochemical water treatment equipment, and enabling the pollution solution to sequentially flow through two filtering membranes; and positive bias voltage and negative bias voltage parameters on the filter membrane are adjusted, so that the applied voltage is periodically and regularly switched between the positive bias voltage and the negative bias voltage, and organic pollutants in the polluted solution are removed. The TEMPO modified ceramic membrane comprises a conductive ceramic membrane TEMPO polymer coating layer, and a TEMPO polymer is a high-molecular polymer which is polymerized by taking 2, 2, 6, 6-tetramethylpiperidine oxide with nitroxide free radicals as a monomer. According to the water treatment method provided by the invention, organic pollutants in the polluted solution can be efficiently removed, and meanwhile, humus interference is resisted.

The invention belongs to the technical field of environmental pollution remediation, and particularly relates to an integrated soil reutilization remediation system and a method thereof.The system comprises a contaminated soil transportation monitoring unit, a contaminated soil division, detection and acquisition unit, a remediation scheme intelligent design unit, a remediation treatment monitoring unit and a centralized disposal center supervision terminal; according to the method, the remediation period of the contaminated soil is shortened through remote centralized disposal of the contaminated soil, the contaminated soil is temporarily stored in a partitioned mode according to the division information of the contaminated soil after being transported to the remote centralized disposal center, and the corresponding soil remediation scheme is generated based on the soil detection information and the remediation process is executed. And the repaired soil is transferred to a to-be-detected area and is subjected to resource utilization after being subjected to self-detection and acceptance inspection, the cooperative treatment capacity of the polluted soil is remarkably improved, the soil repairing process is effectively monitored and managed through the repairing treatment monitoring unit, the supervision difficulty of management personnel is remarkably reduced, and it is guaranteed that the repairing process is safely and stably carried out.

The invention relates to the technical field of soil remediation, in particular to a soil turning device for soil pollution remediation, which comprises a base, a liquid storage tank is mounted at the top of the base, a shell is welded at one end of the bottom of the base, an air cylinder is mounted at the top end of the base, and a sliding plate sliding in the air cylinder is fixedly connected to the output end of the air cylinder. According to the invention, a rotary tillage blade is driven to operate through a motor, a buffer mechanism protects the blade when encountering large resistance, the repair operation is ensured to be stable, the blade is stressed to enable a piston to extrude air, and the blade is driven to rotate, so that the efficiency of the rotary tillage is improved, and the efficiency of the rotary tillage is improved. In addition, the push rod is in linkage with the angle adjusting mechanism, the soil turning efficiency is improved, the blade can flexibly avoid obstacles, stress is dispersed, and the service life of the blade is prolonged.

The invention provides a pH value adjusting method and system for soil remediation, and relates to the field of soil pollution remediation, the pH value and ORP value of soil are obtained and analyzed, the dominant mode of pH change is determined based on coupling judgment logic, then the remediation agent adding strategy is adjusted, and the remediation effect is improved. The problem that the influence of microbial activity on pH is not fully considered in the prior art is effectively solved, blind adding of a repairing agent is avoided, the repairing accuracy and efficiency are improved, the problems that in the prior art, the biogeochemical process is not effectively coupled, the reason of pH change is difficult to accurately recognize, and the repairing agent is too excessive or insufficient are solved, and the repairing effect is improved. And the repairing accuracy and sustainability are improved.

The invention provides equipment capable of dissolving and extracting salt in saline-alkali soil and polluted soil and a use method of the equipment. Soluble salt ions in saline-alkali soil and a polluted soil aqueous solution are extracted mainly by using a reverse osmosis technology. Comprising equipment capable of adjusting the content of soluble salt in soil and a technical method for flushing the soil through cooperation of water circulation. The equipment mainly comprises a two-way flushable pre-filter device, a booster pump, a reverse osmosis membrane filter element group, a tail end pure water outlet pipe and a wastewater outlet. Wherein the front filtering device is divided into three stages from coarse filtering to fine filtering and is mainly placed on the rear side of a cultivated land; the tail end pure water outlet pipe comprises a row of multiple water outlets and is mainly placed on the front side of the cultivated land. The device can be integrated into a vehicle, has the advantages of being high in treatment speed, good in treatment effect, water-saving and environment-friendly, and is wide in application prospect.