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291 results about "Polluted soils" patented technology
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Polluted soil can harm humans by making contact with the soil or consuming vegetation produce from contaminated soils. Children are even more susceptible to the harms of soil pollution since they spend most of their time playing in close contact with the soil. Thus, soil pollution has a long list of effects.
Heavy metal contaminated soil remediation system and method based on intelligent management and control
The invention relates to the technical field of in-situ / ex-situ remediation of sites polluted by heavy metals such as cadmium, lead, copper and zinc, and discloses a heavy metal polluted soil remediation system and method based on intelligent management and control. The system comprises an electrode system module, an activator module, a targeted adsorption device module, an automatic monitoring system module, an intelligent decision-making system module and a photovoltaic power supply module. The method comprises the steps of driving heavy metal ions in soil to directionally migrate through an electric field; the activating agent module works, green micromolecule organic acid and other activating agents are injected in a gradient mode, and the migration efficiency of heavy metal is improved; activated heavy metal ions can be captured by an adsorption material in the targeted adsorption device module in cooperation with a selective enrichment device; meanwhile, the automatic monitoring system module collects environmental parameters in real time; the intelligent decision-making system module optimizes the remediation efficiency and energy consumption according to the real-time data, and low-cost and high-efficiency remediation of soil heavy metal pollution is achieved. The remediation efficiency is remarkably improved, and the risk of secondary pollution is reduced.
Owner:POWER CHINA KUNMING ENG CORP LTD
Ecological restoration effect evaluation and simulation system after polluted soil restoration
The invention discloses an ecological restoration effect evaluation and simulation system after polluted soil restoration, and relates to the technical field of soil restoration, and the system comprises a soil feature generation module which generates an ecological feature data set; the ecological restoration evaluation module is used for establishing a multi-dimensional evaluation model by using an analytic hierarchy process and a fuzzy comprehensive evaluation method based on the ecological characteristic data set, and generating an ecological restoration effect index; the dynamic simulation prediction module is used for constructing an ecological restoration dynamic simulation model and simulating the evolution trend of a soil ecological system under different environment conditions; and the restoration strategy optimization module is used for generating a targeted ecological restoration optimization scheme by combining a preset restoration strategy library according to the ecological restoration effect index and the dynamic simulation prediction result. According to the method, a closed-loop system integrating multi-source data acquisition and processing, multi-dimensional evaluation, dynamic simulation prediction and stepped strategy optimization is constructed, and accurate evaluation of the ecological restoration effect after contaminated soil restoration and scientific optimization of the restoration strategy are achieved.
Owner:WUXI GEWU ENVIRONMENTAL PROTECTION TECH CO LTD
Chemical restoration method for treating heavy metal-polluted terrain soil by ferromagnetic artificial nucleuses
InactiveCN107803397AAchieve the purpose of reducingLarge specific surface areaContaminated soil reclamationTerrainCompound (substance)
The invention provides a chemical restoration method for treating heavy metal-polluted terrain soil by ferromagnetic artificial nucleuses. In a ferromagnetic artificial nucleus soil restoration method, the ferromagnetic artificial nucleuses are applied to heavy metal-polluted soil; soil above a heavy metal pollution depth is overturned by cultivation equipment to uniformly mix with the ferromagnetic artificial nucleuses; and after heavy metal can be dispersed from the soil to the artificial nucleuses by a period of time, the soil containing the artificial nucleuses is overturned by using the cultivation equipment to increase the change of the artificial nucleuses contacting with other soil. After the soil overturning procedure is repeated by multiple times, the cultivation equipment provided with magnets can be used for separating the ferromagnetic artificial nucleuses, absorbed with the heavy metal, from the polluted soil; and the content of the heavy metal of the polluted soil is reduced due to shifting-out of the ferromagnetic artificial nucleuses, so that the purpose of soil restoration is gradually achieved.
Owner:梅州市智丰农业科技有限公司
Antimony detoxification synergistic autotrophic nitrogen fixation pseudomonas and application thereof
The invention discloses a pseudomonas for antimony detoxification and autotrophic nitrogen fixation and application of the pseudomonas. The strain is separated from the rhizosphere of a pioneer plant in antimony-polluted soil of a tin mine in cold water river city, Hunan province, and is identified to be capable of quickly oxidizing high-toxicity antimony (III) into low-toxicity antimony (V) through autotrophic metabolism in a high-antimony environment, so that antimony detoxification is realized, and the detoxification rate is 108.6 (mu mol / (L.day)). The strain has autotrophic nitrogen fixation activity and can achieve autotrophic growth under the oligotrophic condition of a mining area, and the nitrogenase activity is larger than or equal to 223.4 (nmol C2H2 / (g.h)). Particularly, the antimony detoxification and nitrogen fixation capabilities of the strain have a synergistic effect, so that the strain has unique advantages in the field of heavy metal antimony pollution remediation, and dual effects of antimony pollution treatment and soil improvement can be synchronously realized; the development and application prospects are good.
Owner:CENT SOUTH UNIV
Petroleum-polluted soil polycyclic aromatic hydrocarbon migration path simulation experiment system
ActiveCN120489866AProgramme-controlled manipulatorSurface/boundary effectElectrical impedance tomographyPetroleum
The invention relates to a petroleum polluted soil polycyclic aromatic hydrocarbon migration path simulation experiment system, which comprises a main reaction cabin, a mechanical arm collaborative operation module, a multi-mode sensing module, a whole natural environment regulation and control module and an edge intelligent decision-making platform, an annular magnetic suspension track is arranged at the top of the main reaction cabin, and a soil sample chamber is arranged at the bottom of the main reaction cabin; the multi-modal sensing module comprises an EIT (electrical impedance tomography) module, an LIBS (laser-induced breakdown spectroscopy) module and a terahertz time-domain spectroscopy module and is used for measuring global conductivity distribution of soil in a soil sample chamber, inverting the porosity of the soil sample and a pollutant concentration field in pore water, analyzing the concentration of carbon, hydrogen and oxygen elements of pollutants and specifically detecting polycyclic aromatic hydrocarbon molecules; the edge intelligent decision-making platform interacts with the multi-mode sensing module, the full-natural-environment regulation and control module and the mechanical arm collaborative operation module to actively adjust system parameters, and repair intervention is carried out on soil body degradation. And automatic preparation of the polluted soil can be realized, and migration monitoring under different practical engineering application working conditions can be realized.
Owner:HEBEI UNIV OF TECH
Method for repairing cadmium-arsenic combined polluted soil by using iron modified garden waste biochar
PendingCN120944553AAgriculture tools and machinesContaminated soil reclamationSoil heavy metalsEnvironmental engineering
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.
Owner:ZHEJIANG UNIV
Soil sampler capable of preventing sample pollution
The utility model discloses a soil sampler for preventing sample pollution, which belongs to the technical field of soil sampling and comprises a mounting table, a plurality of support units are arranged on the mounting table, a plurality of guide columns are sleeved on the mounting table, the top ends of the guide columns are slidably connected with a driving ring, a push arm is arranged on the upper surface of the driving ring, and the push arm is slidably connected with the guide columns. The inner circumferential surface of the driving ring is connected with a connecting bush through a connecting arm, the inner circumferential surface of the connecting bush is rotatably connected with a driving handle through a connecting piece I, and the mounting table is sleeved with a sampling module for soil sampling. The extension units can drive the sampling unit and the drilling unit to rotate by rotating a driving ring, the sampling unit is controlled to sample soil by rotating a driving handle, and a plurality of extension sections are quickly connected under the cooperation of a first inserting groove and a first inserting block; a worker can conveniently carry the device to a sampling site and then quickly mount and dismount the device, so that the device is convenient to carry and transport.
Owner:ANHUI PROVINCIAL GEOLOGICAL EXPLORATION BUREAU NO 1 INST OF HYDROLOGIC ENG GEOLOGY
Remediation method of hexavalent chromium polluted underground water
The invention provides a remediation method for hexavalent chromium polluted underground water, and relates to the technical field of water treatment. According to the preparation method, rice hulls are adopted as raw materials and treated through an oxygen-limited pyrolysis-ferric salt dipping composite technology, and the rice hull-based iron-rich biochar material is obtained; loading microorganisms with the rice hull-based iron-rich biochar material to obtain an adsorption material; the adsorption material is used for carrying out adsorption treatment on the hexavalent chromium-containing polluted underground water. Aiming at Cr (VI) polluted underground water, a prepared rice husk-based iron-rich biomass material is adopted to load domesticated soil indigenous microorganisms, and the domesticated soil indigenous microorganisms are added into a nearly neutral Cr (VI) polluted soil / underground water reaction system, so that efficient reductive degradation of Cr (VI) is realized, and the influence mechanism of Fe < 3 + > is explored.
Owner:CHINA UNIV OF MINING & TECH
Thermal remediation of soil contaminated with per- and polyfluoroalkyl substances (PFAS) with little or no waste byproduct
PCT designated stageWO2025245497A1Sludge treatment by thermal conditioningSolid waste disposalAlkaneEnvironmental engineering
The invention herein comprises systems, devices, and methods for the remediation of per- and polyfluoroalkyl substances, PFAS, including their precursors and degradation compounds such as volatile, semi-volatile, and non-volatile fluorinated alkene and alkane organic chemicals, OFCs, in media through heating the media using electrically powered thermal conduction heaters or other methods, to temperatures between approximately 250°C and 550°C.
Owner:LACHANCE JOHN C +6
Targeted chromium adsorption material as well as preparation method and application thereof
The invention relates to a chromium-targeted adsorbing material as well as a preparation method and application thereof. The preparation method of the targeted chromium adsorption material comprises the following steps: S1, crushing, sieving and pyrolyzing stems of potassium-rich plants to obtain biomass carbon; s2, dispersing biomass carbon in a solvent, adding Cr < 6 + > template ions, Cr < 3 + > template ions, a functional monomer, a cross-linking agent and an initiator for reaction, and washing and drying after reaction to obtain an ion imprinted polymer; and S3, dissolving a reduction barrier agent in a solvent, adding the ion imprinted polymer, and reacting at room temperature to obtain the chromium-targeted adsorption material, the potassium-rich plants are plants with the total potassium mass content of 5%-8%. The long-acting reduction adsorption material for targeted remediation of heavy metal Cr < 6 + > / Cr < 3 + > polluted soil and underground water is prepared, has extremely high specific selectivity and efficient adsorbability, and has obvious advantages in the aspects of heavy metal treatment efficiency, continuity and acid interference resistance.
Owner:POWERCHINA ZHONGNAN ENG +1
Movable type in-situ rapid emergency repairing and recycling equipment for polluted soil
Owner:山东省土壤污染防治中心 +1
Bacterium for reducing dissimilatory nitrate into ammonia nitrogen through anaerobic biodegradation of polycyclic aromatic hydrocarbon and application thereof
The invention discloses a bacterial strain for reducing dissimilatory nitrate into ammonia nitrogen through anaerobic biodegradation of polycyclic aromatic hydrocarbon and application of the bacterial strain, the bacterial strain is named as PheICNA, and the bacterial strain belongs to Intraporum calvum. The strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.40686. The strain can degrade polycyclic aromatic hydrocarbons such as phenanthrene under anaerobic conditions and completely metabolize the polycyclic aromatic hydrocarbons into carbon dioxide. Meanwhile, nitrate radicals are reduced into ammonium nitrogen, and the generated ammonium nitrogen can be used for growth of microorganisms and can be used as a nitrogen source for plants. The strain can be used for biologically repairing polycyclic aromatic hydrocarbon pollutants such as phenanthrene in soil, can convert nitrate nitrogen in the soil into ammoniacal nitrogen at the same time, achieves the effect of nitrogen maintenance, and has good application prospects in the aspects of polluted soil treatment and the like.
Owner:TSINGHUA UNIVERSITY
Ground washing salt pumping machine for soil salinization treatment and soil pollution remediation and use method of ground washing salt pumping machine
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.
Owner:葛怀箱
Step-by-step leaching remediation method for chromium-contaminated soil
The invention provides a step-by-step leaching remediation method for chromium-contaminated soil, which comprises the following steps: mixing the chromium-contaminated soil and a first leacheate, carrying out first oscillation, then adding a second leacheate into the mixture, and carrying out second oscillation to obtain the remediated soil, the first leacheate comprises sodium salt; the second leacheate comprises organic acid and ferric salt; the temperature of the second oscillation is 70 DEG C to 90 DEG C. The method comprises the following steps: desorbing and releasing hexavalent chromium adsorbed on the surfaces of soil particles by using a sodium salt eluting agent, dissolving the soil particles to promote release of insoluble hexavalent chromium, and dissolving the soil particles containing high-concentration insoluble hexavalent chromium by using a composite eluting agent of organic acid and ferric salt under a high-temperature condition. And when the hexavalent chromium is released, the hexavalent chromium is efficiently reduced and stabilized, so that the aim of removing the hexavalent chromium in the polluted soil is fulfilled.
Owner:CHONGQING UNIV
Bacillus mycoides Y2 with functions of reducing cadmium content of crops and promoting growth and application of bacillus mycoides Y2
The invention provides bacillus mycoides Y2 with functions of reducing cadmium content of crops and promoting growth and application of the bacillus mycoides Y2, and relates to the technical field of soil heavy metal pollution bioremediation and agricultural microorganism application. The bacillus mycoides Y2 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on July 14, 2025, and the preservation number is CGMCC 35231. The strain can be applied to cadmium-polluted soil through root application, can reduce the cadmium content of edible parts of crops such as rice, oilseed rape and fast vegetables, and promotes crop growth and rice root surface iron plaque formation. The contaminated soil in Hunan, Henan and Tianjin is verified to be capable of stably colonizing and adapting to different soils and crops. The strain and the matched preparation are green, efficient, high in stability and wide in universality, and provide key technical support for safe utilization of cadmium-polluted cultivated land.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
In-situ remediation device for polluted soil and underground water in industrial park
The utility model relates to an in-situ remediation device for polluted soil and underground water in an in-situ industrial park, which comprises an integrated shell, a plurality of through holes are arranged on the shell, and a plurality of injection channels and a plurality of extraction channels matched with the through holes are arranged; an injection configuration unit is arranged in cooperation with the injection channel, and the injection configuration unit is connected to the injection channel through an output assembly; a classification processing unit used for classifying and processing different extracted objects is arranged in cooperation with the extraction channel, and the classification processing unit and the injection configuration unit are arranged in a matched mode. And a controller is matched with the device. The device disclosed by the utility model realizes sustainable low-cost remediation of the polluted soil and the underground water, and is particularly suitable for long-term treatment of the polluted soil and the underground water in industrial parks or large-scale in-production enterprises; various in-situ remediation functions can be realized; integration of a software operation platform and an online monitoring control end is facilitated; the construction safety is high; the use in a park is more convenient.
Owner:HANGZHOU DADI ENVIRONMENTAL PROTECTION ENG CO LTD
In-situ microorganism efficient remediation method for organic contaminated soil
The invention relates to the technical field of soil remediation, in particular to an efficient in-situ microbial remediation method for organic contaminated soil, which comprises the following steps: layering and dividing the contaminated soil into layers and regions, and injecting different medicaments into circulating well groups positioned in different regions to achieve the purpose of adjusting an underground microbial environment, and automatically forming and constructing an aerobic-anaerobic transition zone. Meanwhile, self-circulation of underground water is accelerated through the circulating well group, different indigenous microorganism florae are activated, and a metabolic chain is formed; and aerobic / anaerobic microorganisms are periodically injected into the injection well, an electron donor and a carbon source are synchronously provided, the steady state of an ecosphere is maintained, and the aims of optimizing the construction period and the treatment effect of the in-situ bioremediation technology of the polluted soil and the underground water are achieved.
Owner:GUANGZHOU IND CONTROL ENVIRONMENTAL PROTECTION TECH CO LTD
Remediation method for lead-polluted soil and application of remediation method
The invention discloses a lead-contaminated soil remediation method and application thereof. The remediation method comprises the steps of pretreatment and conditioning of contaminated soil, addition and mixing of a phosphate remediation agent, thermal induction enhanced reaction and stabilization effect evaluation. According to the remediation method, the remediation efficiency of the contaminated soil can be greatly improved, the remediation stability can be improved, secondary dissolution of phosphorus in the remediation process can be inhibited, and resource utilization of the high-lead contaminated soil is achieved.
Owner:BEIJING NORMAL UNIV AT ZHUHAI
Composite stable moringa oleifera polysaccharide cadmium-blocking preparation as well as preparation method and application thereof
The invention discloses a composite stable moringa oleifera polysaccharide cadmium-resistant preparation as well as a preparation method and application thereof, and relates to the technical field of cadmium-resistant preparations. The cadmium blocking preparation is composed of moringa oleifera polysaccharide, a compound stabilizer and a phosphate buffer solution, the compound stabilizer is composed of sodium alginate and nano silicon dioxide according to the mass ratio of 1: (1.0-1.5), and the pH value of the preparation is 6.0-7.0. The moringa oleifera polysaccharide is applied to cadmium prevention and control of Chinese cabbages in alkaline cadmium-polluted soil (pH 6.5-7.5), and accurate regulation and control are achieved in a rhizosphere irrigation mode. The sodium alginate-nano silicon dioxide composite stabilizer system synergistically exerts the dual functions of dispersion stability and slow release protection, and ensures that the moringa oleifera polysaccharide keeps activity in the soil environment. The preparation has the advantages of being small in dosage, low in cost, easy and convenient to operate, environmentally friendly and the like, a scientific and feasible technical scheme is provided for safe utilization of cadmium-polluted farmland in the alkaline soil area, and the preparation has important application value and popularization prospects.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
Analysis method for ectopic thermal desorption carbon emission of industrial organic polluted soil
The invention relates to an industrial organic polluted soil ectopic thermal desorption carbon emission analysis method which comprises the following steps: dividing ectopic thermal desorption process flows, and determining the type of a carbon emission source generated by each process flow; determining a data acquisition and transmission mode in the ectopic thermal desorption process flow; establishing a carbon emission calculation model of each technological process according to the equipment type and the carbon emission source type in each technological process in combination with the carbon emission factor and the polluted soil treatment volume; on the basis of a carbon emission calculation model in each technological process, ex-situ thermal desorption carbon emission traceability analysis is carried out. According to the method, boundary clearness, data acquisition intellectualization, calculation quantification and analysis traceability of carbon emission in the whole ectopic thermal desorption process are realized, the accuracy and scientificity of carbon emission evaluation are improved, a reliable basis is provided for optimization and emission reduction of a polluted soil remediation process, and the method has good popularization and application values.
Owner:CCCC TIANJIN ECO ENVIRONMENTAL PROTECTION DESIGN & RES INST CO LTD +1
Thiamine-releasing bacillus miguli and application thereof
The invention provides a thiamine-releasing bacillus miguli and application of the thiamine-releasing bacillus miguli. According to the invention, a strain of Aneurinibacillus migulanus X3-3 with resistance to a plurality of heavy metals is screened and separated from soil subjected to combined pollution of heavy metals, and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the registration number of the preservation center is CGMCC No.33798. The invention also discloses a method for preparing the Aneurinibacillus migulanus X3-3 with resistance to a plurality of heavy metals and application of the Aneurinibacillus migulanus X3-3. The strain can tolerate high-concentration heavy metal pollution, shows good heavy metal removal and solidification capabilities in water and soil, provides an efficient and environment-friendly microbial solution for remediation of a heavy metal combined pollution environment, and has a wide application prospect.
Owner:INST OF MICROBIOLOGY CHINESE ACAD OF SCI
Anti-Brevibacterium phenolicum and application thereof
The invention belongs to the technical field of microbial fermentation and soil improvement, and particularly relates to anti-Brevibacterium phenolicum and application thereof. The invention discloses an anti-phenol brachybacterium sp. YSY80, the preservation number is CCTCC M 20251135, a microbial agent containing the anti-phenol brachybacterium sp. YSY80 is used for treating saline-alkali soil or heavy metal polluted soil, and the anti-phenol brachybacterium sp. YSY80 has the advantages that the preservation number is CCTCC M 20251135; the brevibacterium phenolicum YSY80 is found to be capable of improving the saline-alkali tolerance of crops and promoting the growth of the crops in saline-alkali soil, has the effects of dissolving phosphorus, dissolving potassium and fixing nitrogen, and can be used for reducing the content of heavy metal ions in heavy metal polluted soil.
Owner:HUNAN INST OF MICROBIOLOGY +2
Method for repairing organic matter combined polluted soil through ball milling
PendingCN120790648AContaminated soil reclamationGrain treatmentsSimple Organic CompoundsSoil science
The invention discloses a method for repairing organic compound contaminated soil by ball milling, which improves the repairing efficiency and comprises the following steps: (1) feeding the contaminated soil into a feeding machine; the feeding machine has a preliminary crushing function, and the contaminated soil is crushed into particles with the diameter smaller than 15 mm, so that follow-up ball milling is facilitated; (2) the contaminated soil is conveyed into a dry ball mill through a feeding machine, and first-stage ball milling is carried out; and (3) adding persulfate into the dry ball mill, and carrying out second-stage ball milling to degrade organic matters in the polluted soil, so that the polluted soil reaches the qualified standard.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2
Iron-modified cow dung biochar material, preparation method thereof and application of iron-modified cow dung biochar material in remediation of cadmium-copper contaminated soil
The invention relates to the technical field of soil remediation, in particular to an iron-modified cow dung biochar material and a preparation method thereof and application in remediation of cadmium-copper contaminated soil. Cow dung is used as a raw material, pretreated cow dung is obtained through natural airing, dewatering and smashing, then the pretreated cow dung and a ferrous chloride solution are mixed, stirred, filtered, dried and ground, and the iron-modified cow dung biochar material is obtained. And pyrolyzing under the protection of inert gas. The iron-modified biochar has a porous layered structure, rich oxygen-containing functional groups and iron-based active sites, has a pH value close to neutrality, and can effectively adapt to the farmland soil environment. The material can remarkably reduce the effective state content of cadmium and copper in soil, promote conversion of heavy metal to a stable residue state, reduce migration of heavy metal in pore water and improve the enzyme activity and nutrient effectiveness of the soil at the same time, the grain cadmium accumulation reduction amplitude reaches 71.65% and the copper accumulation reduction amplitude reaches 29.36% in the rice growth process, and therefore the cadmium and copper combined polluted soil is efficiently repaired, and the quality of the rice is improved. And crop safety and soil health are guaranteed.
Owner:ANHUI UNIV
A modified montmorillonite for synergistically repairing heavy metals and organic pollutants in soil, and a preparation method and application thereof
The application belongs to the technical field of contaminated soil remediation, and particularly relates to modified montmorillonite for synergistically remediating heavy metals and organic pollutants in soil as well as a preparation method and application thereof. Hexadecyl trimethyl ammonium bromide (CTAB) and dodecyl trimethyl ammonium bromide (DTAB) are used as modifiers to prepare organic modified montmorillonite, and mercury ions (Hg 2+ ) and acetochlor (ACR) are used as representative substances of heavy metals and organic pollutants to study the effects of the two kinds of organic modified montmorillonite on remediation of Hg 2+ and ACR compound contaminated soil. The results show that the two kinds of organic modified montmorillonite have good removal effects on Hg 2+ and ACR in real soil samples, and can simultaneously remove Hg 2+ and ACR in soil. The removal rates of CTAB modified montmorillonite and DTAB modified montmorillonite can both reach more than 90%. The organic modified montmorillonite prepared by using CTAB and DTAB as modifiers can simultaneously remove Hg 2+ and ACR in soil, and can synergistically remediate Hg 2+ and ACR compound contaminated soil.
Owner:HUBEI UNIV FOR NATITIES
Leaching remediation composition and remediation method for lead-containing heavy metal contaminated soil
The invention discloses a leaching remediation composition and a remediation method for lead-containing heavy metal contaminated soil. The remediation method comprises the following steps: crushing the polluted soil into granular soil to be remedied; leacheate containing citric acid and EDTA-2Na is prepared; and carrying out leaching treatment on the to-be-remediated granular soil by using a leaching solution. The engineering remediation technology is environmentally friendly, secondary pollution is avoided, and the content and the leaching concentration of heavy metal, especially lead, in the leached soil can meet related environmental quality requirements.
Owner:CHONGQING HUIYA ENVIRONMENTAL PROTECTION ENG CO LTD +1
Soil heavy metal pollution remediation method based on nanometer materials
ActiveCN120460455AWithdrawing sample devicesContaminated soil reclamationSoil scienceSoil heavy metals
The invention relates to the technical field of environmental remediation, discloses a soil heavy metal pollution remediation method based on a nano material, and is particularly suitable for remediation of soil polluted by heavy metals such as copper, lead and cadmium. According to the method, the nano material is uniformly added into the polluted soil, and heavy metal ions in the soil are adsorbed or reduced to be in a low-toxicity or non-toxic form by utilizing the high specific surface area and strong adsorbability of the nano material, so that the heavy metal concentration in the soil is effectively reduced. In the repairing process, the stability and the adsorption capacity of the nanometer material can be improved through surface modification, and the repairing effect is enhanced. By adjusting the humidity, pH value and other parameters of the soil, the remediation conditions are optimized, and the remediation efficiency is improved. The method has the advantages of being high in remediation speed, low in cost, environmentally friendly and the like, is particularly suitable for rapid treatment of large-area heavy metal contaminated soil, can remarkably reduce mobility and bioavailability of heavy metal in the soil and avoid the problem of secondary pollution, and has wide application prospects.
Owner:BASE MANAGEMENT CENT OF JIANGXI ACAD OF AGRI SCI
Layered silicate nano biological organic fertilizer capable of passivating heavy metal contaminated soil
PendingCN121673134ABio-organic fraction processingSolid/semi-solid fertilisersMicrobial agentNutrient
The invention relates to the technical field of agricultural organic fertilizers, in particular to a layered silicate nano biological organic fertilizer capable of passivating heavy metal contaminated soil, which is prepared from the following raw materials: a modified layered silicate nano material, a modified organic fertilizer matrix, a modified functional microbial agent, humic acid, a slow-release carrier and a chelating agent. According to the invention, the layered silicate nano-material is modified, so that the surface polarity and active sites of the layered silicate nano-material are optimized, the adsorption and fixation capabilities on heavy metal ions are greatly enhanced, heavy metals in polluted soil are locked more efficiently, and the mobility of the heavy metals is reduced; after the organic fertilizer matrix is modified, the pore structure is more developed, the nutrient adsorption and retention performance is remarkably improved, nutrients can be slowly released, and nutrient support is continuously provided for soil microorganisms and crops; after the functional microbial agent is modified, the functional microbial agent can more stably survive and play a role in soil, the conversion of microorganisms to heavy metals is promoted, and the form of the heavy metals with higher toxicity is converted into a low-toxicity or non-toxic form.
Owner:INST OF PLANT PROTECTION & SOIL FERTILIZER HUBEI ACAD OF AGRI SCI
Polluted soil remediation pretreatment device and pretreatment method
PendingCN121286153ASoil lifting machinesContaminated soil reclamationPretreatment methodSoil science
The invention relates to the technical field of contaminated soil remediation, and discloses a contaminated soil remediation pretreatment device and method, the contaminated soil remediation pretreatment device comprises a remediation table, and a vibration bottom plate is movably mounted in the remediation table through a vibration mechanism. During use, contaminated soil is placed in the remediation table and is borne through the vibration bottom plate, when the sliding mechanism drives the U-shaped sliding plate to do horizontal reciprocating motion, remediation liquid can be evenly sprayed to the surface of the soil through the spray head, through the cooperation effect of the sliding mechanism and the vibration mechanism, the vibration bottom plate can vibrate in a reciprocating mode, and caked soil can be conveniently beaten; meanwhile, through the cooperation effect of a guide mechanism and an extrusion mechanism, when a U-shaped sliding plate moves to one end of the repairing table, the operation height of a longitudinal soil turning mechanism and the operation height of a transverse soil turning mechanism can be automatically switched, and the operation states of the different soil turning mechanisms are achieved in cooperation with a driving mechanism; the continuity and the treatment effect of the pretreatment of the polluted soil are greatly improved.
Owner:TIANHONG ENVIRONMENTAL TECH CO LTD
Polluted soil fine crushing equipment
The utility model relates to the field of polluted soil treatment, and discloses polluted soil fine crushing equipment which comprises a trailer, a mounting shaft is mounted at the tail of the trailer, wheels are fixedly connected to two sides of the mounting shaft, a bucket is fixedly connected to the bottom of the front end of the trailer, and a plurality of groups of fixed grid plates which are distributed at equal intervals are fixedly connected to the bottom of the trailer. Fixing frames are fixedly connected to the two sides of the bottom of the trailer, a fixing rod is fixedly connected between the fixing frames, a sliding block is slidably connected to the fixing rod, a spring arranged on the fixing rod in a sleeving mode is arranged between the sliding block and the fixing frames, a vibration frame is fixedly connected to the sliding block, and a plurality of sets of sliding grid plates distributed at equal intervals are fixedly connected into the vibration frame. The sliding grid plate is in sliding connection with the fixed grid plate; compared with a traditional jaw crusher, soil blocks are crushed through shearing force generated by relative sliding between the fixed grid plate and the sliding grid plate, even if the moisture content of the soil blocks is large, shearing and fine crushing can still be conducted, and the practicability of equipment is improved.
Owner:MORITA (JINAN) HOBBY CO LTD