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172 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.
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
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
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
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
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
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
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
Organic polluted soil thermal desorption synergistic remediation system
The utility model discloses an organic polluted soil thermal desorption synergistic remediation system which comprises an organic polluted soil thermal desorption remediation system, a cement clinker production line, an exhaust fan I, a dust collector I, an exhaust fan II, a calcium hydroxide water tank and a sintered soil reservoir. The organic polluted soil thermal desorption repair system comprises an organic polluted soil thermal desorption system, an organic pollutant dry desulfurization lime powder preparation system and an organic polluted soil thermal desorption fuel preparation system. The utility model relates to the technical field of polluted soil remediation, and the organic polluted soil thermal desorption system shares a set of complete environment-friendly system with the existing dry kiln for normal production, so that the organic polluted soil thermal desorption system has more advantages that firstly, the organic polluted soil thermal desorption system has higher treatment efficiency on harmful waste gas generated in the polluted soil remediation process and can realize ultralow emission; 2, the investment and operation cost of environmental protection equipment of the polluted soil thermal desorption system can be saved; and thirdly, pollutant emission can be managed and controlled in a centralized and unified manner, and pollutant emission sources are reduced.
Owner:HUBEI JINGLAN CEMENT CO LTD
Application of composite solid phosphorus-solubilizing bacterial agent in repairing cadmium-contaminated soil and improving soil quality
The application relates to the field of environment, resource utilization and agricultural biotechnology, and particularly relates to application of a composite solid phosphorus-solubilizing bacterial agent for repairing cadmium-polluted soil and improving soil quality, wherein the composite solid phosphorus-solubilizing bacterial agent comprises phosphorus-solubilizing bacteria, bone charcoal, culture medium and organic matrix; the phosphorus-solubilizing bacteria are Pantoea agglomerans CT-3 and Enterobacter hormaechei HS-6; the composite solid phosphorus-solubilizing bacterial agent is applied to Cd-polluted soil, and the biological availability of Cd in the soil is reduced by Pantoea agglomerans CT-3, Enterobacter hormaechei HS-6 and micron-nanometer multi-stage bone charcoal, and meanwhile, the soil quality is improved. The application can effectively promote the transformation of insoluble phosphate into soluble phosphate, so that the content of effective soil phosphorus is increased by 98.19%; on the other hand, the application can fix soil heavy metal Cd, so that the content of effective Cd in the soil is reduced by about 52.50%, has excellent Cd-fixing capacity, and can relieve the Cd stress of crops, and has good application value in repairing farmland Cd pollution, improving soil quality and environmental protection.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY +1
Alkaline-thermal degradation process and system for perfluoroalkyl and polyfluoroalkyl substances present in polluted soil.
PendingFR3166817A1Contaminated soil reclamationWater/sewage treatmentChemical compoundEnvironmental engineering
- Alkaline-thermal process and system for the degradation of perfluoroalkyl and polyfluoroalkyl substances present in contaminated soil. - The process (P) for the alkaline-thermal degradation of PFAS substances comprises, in particular, an incorporation step (E1) for incorporating an alkali compound and optionally an adjuvant into the contaminated soil, a heating step (E2) for heating the contaminated soil containing the alkali compound and the adjuvant to a degradation temperature between 100°C and 350°C, the heating step (E2) being carried out at ambient pressure, and an extraction step (E3) for extracting the gases generated during the heating step (E2), as well as preferably a treatment step for the extracted gases (E4). This process (P) makes it possible to achieve the degradation of PFAS substances on a large scale, at reduced cost, and in a relatively simple and highly efficient manner. Figure for the abstract: Fig. 2
Owner:ORTEC GÉNÉRALE DE DÉPOLLUTION
A soil remediation agent for environmental pollution and a method for preparing the same
The application discloses a kind of soil remediation agent for environmental pollution and preparation method thereof, and relates to the technical field of soil regeneration.The preparation method comprises the following steps: first, iron sulfate and manganese sulfate are added to deionized water, stirred and dissolved to obtain a mixed salt solution;Then, chitosan microspheres are prepared;Chitosan microspheres are then added to the mixed salt solution for reaction to obtain chitosan-loaded iron-manganese composite oxides;Finally, chitosan-loaded iron-manganese composite oxides are added to a disodium ethylenediaminetetraacetate solution for reaction to obtain a soil remediation agent.The soil remediation agent is a special agent material for heavy metal environmental pollution treatment, can efficiently treat various heavy metals in soil, and has good adaptability to acidic and alkaline soils, thereby achieving soil regeneration.
Owner:QINGDAO BENYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
A cadmium-resistant priestia megathura strain and its application in the treatment of complex pollution environment
The application discloses a cadmium-resistant proteus mirabilis and application thereof in treatment of composite pollution environment. Priestia megaterium The application provides a PBAT-degrading bacterium, i.e., a proteus mirabilis (S261-3) strain, which can grow at a temperature of 10-50 DEG C and has certain salt and cadmium resistance, and can grow normally in a high-salt or high-cadmium concentration range. Meanwhile, the S261-3 strain has a good PBAT-degrading effect, and can degrade PBAT under cadmium stress, and can be used for degrading plastic pollutants in cadmium-polluted soil. The microbial strain provided by the application has stronger adaptability to a polluted environment, meets the repair demand of a composite pollution site, can be used for comprehensive treatment of microplastic and heavy metal composite pollution, is helpful to improving soil quality and improving land utilization efficiency, and has important practical significance for soil composite pollution repair.
Owner:GUANGDONG OCEAN UNIVERSITY
Cd-polluted soil ecological remediation material based on FeCl3 modified biochar coupled with humus loaded SRB composite bacterial ball and preparation method and application thereof
The present application belongs to the technical field of environmental remediation and soil ecological engineering, and particularly relates to a modified iron biochar-humus-sulfate-reducing bacteria (SRB) composite system for realizing efficient immobilization and ecological remediation of cadmium (Cd 2+ ) in heavy metal contaminated soil. The system can enhance the stability of microbial colonies and has the characteristics of physical and biological synergistic passivation, thereby realizing long-term stabilization and ecological remediation of heavy metals.
Owner:NORTHWEST UNIV
Agricultural contaminated soil remediation device
The utility model is applicable to the technical field of agriculture, and provides an agricultural polluted soil remediation device which comprises a mounting frame, the first telescopic rod is fixedly mounted below the mounting frame, and a placement frame is fixedly mounted on an output shaft of the first telescopic rod; the soil turning frame is rotationally mounted on the placement frame and used for turning over agricultural contaminated soil, and a soil turning mechanism used for driving the soil turning frame to rotate to turn over the contaminated soil is arranged on the placement frame and the soil turning frame; the placement box is fixedly mounted on the mounting frame, the placement box is used for placing crop straw materials used for contaminated soil remediation, and a discharging hopper is fixedly mounted at the bottom of the placement box. According to the agricultural contaminated soil remediation device provided by the scheme, agricultural contaminated soil can be remedied, straw materials used for remediation can be well and uniformly sprayed on the contaminated soil, and the remediation efficiency of the contaminated soil is effectively improved.
Owner:YUNNAN HANZHE TECHN CO LTD
P.megatherium AS and application of P.megatherium AS in degrading 2-methyl-4-chlorophenoxyacetic acid
The invention relates to the technical field of microbial pesticide pollution remediation, and particularly discloses a bacterial strain capable of efficiently degrading MCPA and application of the bacterial strain. The bacterial strain is Priestra megaterium AS, and the preservation number of the bacterial strain is CCTCC (China Center for Type Culture Collection) No. M 20242160. The invention provides a separation and screening method of the strain, the strain grows well in a culture medium containing 500 [mu] mol / L MCPA and can be degraded with MCPA as a carbon source, and the degradation rate of the strain to 500 [mu] mol / L MCPA exceeds 50% within 7 days. Pot experiments prove that when the strain or a preparation thereof is inoculated, MCPA residues in rhizosphere soil can be remarkably reduced, the toxic action of MCPA on sensitive crops such as muskmelons and pumpkins is effectively relieved, and plant growth recovery is promoted. The strain and the microbial inoculum thereof provide an efficient and environment-friendly biotechnology solution for repairing MCPA polluted soil and guaranteeing safe production of melon crops.
Owner:安徽省农业科学院蔬菜研究所
Ex-situ chemical reduction stabilization repair method for hexavalent chromium contaminated soil
The invention provides an ex-situ chemical reduction stabilization remediation method for hexavalent chromium contaminated soil, which comprises the following steps: collecting soil from a contaminated land parcel, airing, crushing, screening and uniformly mixing to obtain pretreated contaminated soil; testing the content of hexavalent chromium in the polluted soil, then adding solid calcium polysulfide into the polluted soil according to the molar ratio of the solid calcium polysulfide to the hexavalent chromium of (12-16): 1, and uniformly mixing; and after uniform mixing, spraying water into the polluted soil according to 15-20% of the total solid mass, and carrying out static maintenance. According to the stable remediation method, the remediation target value (the hexavalent chromium in the soil is lower than 5.7 mg / kg) is achieved on the third day of maintenance, the remediation effect is continuous and good, and rebounding does not occur.
Owner:河南省地质矿产勘查开发局第一地质环境调查院
A riverbank structure that integrates pollution prevention and ecological greening
This utility model relates to a riverbank structure that integrates pollution mitigation and ecological greening, belonging to the field of riverbank structure technology. It includes a polluted soil layer along the riverbank and a riverbed. A barrier mechanism is provided on the right side of the polluted soil layer. The barrier mechanism includes a first clay impermeable layer, a first ecological gabion retaining wall, a soil layer, a second clay impermeable layer, two second ecological gabion retaining walls, and ecological greenery. This riverbank structure, integrating pollution mitigation and ecological greening, isolates the polluted soil layer from the riverbed by setting the first clay impermeable layer and the first ecological gabion retaining wall on the right side of the polluted soil layer, preventing liquid pollutants from flowing into the riverbed. When the first clay impermeable layer is damaged, the second clay impermeable layer can provide further protection. The two second ecological gabion retaining walls enhance the stability of the riverbank structure and reduce the risk of breaches.
Owner:ZHEJIANG FENGMAO SHENGYE CONSTR CO LTD
Soil pollution treatment method and system
The invention relates to the technical field of soil pollution treatment, in particular to a soil pollution treatment method and system, and the system comprises a treatment module which is used for treating polluted soil; the detection module is connected with the treatment module and comprises a pollutant concentration sensor for detecting the pollutant concentration of the soil; the flow guide adjusting module is connected with the treatment module and the detection module and used for determining the directional flow guide intensity of underground water according to the maximum difference quantity of the concentrations of the soil pollutants at equal intervals and equal depths; the putting adjustment module is connected with the treatment module, the detection module and the flow guide adjustment module and used for determining the putting concentration of the microbial nutrient according to the evaporation rate of the water in the soil within unit time; and the gas-water ratio adjusting module is used for determining the gas-water ratio of the soil pores according to the medicament concentration in the underground water. According to the invention, the treatment stability of soil pollution is improved.
Owner:HARBIN UNIV +1
Electro-osmosis leaching-electric dehydration coupling remediation system for combined polluted soil
The invention discloses an electroosmosis leaching-electric dehydration coupling remediation system for compound contaminated soil, which comprises an electroosmosis reaction chamber and a central regulation and control device, a reaction cavity is formed in the electroosmosis reaction chamber, an anode assembly is horizontally and slidably arranged at one end of the reaction cavity, and a cathode assembly is horizontally and slidably arranged at the other end of the reaction cavity; a first wastewater collection structure is arranged at one end, close to the anode assembly, of the outer side of the electroosmosis reaction chamber; according to the invention, an integrated scheme of combining electric drive leaching and electric dehydration is adopted, the anode assembly and the cathode assembly integrate the functions of medicine injection, water pumping, aeration, gas discharge and multi-parameter real-time sensing, and are intelligently and cooperatively controlled by the central regulation and control device, so that the system can be used for adding medicines according to needs in stages in the remediation process, and the remediation efficiency is improved. Enriched pollutants and reaction gas are removed in time, combined pollution is treated in a targeted mode, and a complete treatment process which is low in energy consumption, good in drying effect, free of secondary pollution and high in adaptability is formed.
Owner:BCEG ENVIRONMENTAL REMEDIATION CO LTD +1
Amelanospora sp. HLC15 and application thereof
The invention discloses a strain of rice endophytic fungus nigrospora oxyspora HLC15. The preservation number of the rice endophytic fungus nigrospora oxyspora HLC15 in the Guangdong Microbiological Culture Collection Center is GDMCC (China General Microbiological Culture Collection Center) No.66882; the strain has relatively strong phosphate solubilizing and IAA (indoleacetic acid) producing capacities and cadmium tolerance, can obviously promote the growth of host plants, increase the chlorophyll content of the host plants and relieve the harm of cadmium pollution to crops under the stress of cadmium when being inoculated with HLC15, and is of great significance in the growth and safe production of the crops in cadmium-polluted soil.
Owner:KUNMING UNIV OF SCI & TECH
Magnesium-phosphorus modified charcoal as well as preparation method and application thereof
The invention discloses magnesium-phosphorus modified biochar as well as a preparation method and application thereof, and belongs to the technical field of biochar preparation. The preparation method comprises the following steps: (1) preparing poplar sawdust charcoal by adopting a high-temperature oxygen-limited thermal cracking method; and (2) carrying out modification on the poplar wood chip biochar through MgCl2 and KH2PO4. Phosphorus substances can effectively reduce the effectiveness of heavy metal pollutants in soil and deposition substances, and mainly comprise two reaction mechanisms, namely a precipitation mechanism and an adsorption mechanism. And the phosphate realizes remediation of the heavy metal lead polluted soil through surface complexation, ion exchange or generation of amorphous substances. Therefore, the magnesium-phosphorus modified biochar can efficiently passivate the heavy metal lead in the soil. Moreover, the preparation method is simple, the cost is low, the removal rate of pollutants is high, the adsorption capacity is large, and secondary pollution to the environment is avoided.
Owner:CHINA AGRI UNIV
Petroleum-polluted soil remediation agent based on synergism of fixed microbial inoculum and free bacteria and application of petroleum-polluted soil remediation agent
The invention discloses a petroleum-contaminated soil remediation agent based on synergism of a fixed microbial inoculum and free bacteria and application of the petroleum-contaminated soil remediation agent, and belongs to the technical field of soil pollution control and treatment. The petroleum-contaminated soil remediation agent is prepared from an immobilized microbial agent prepared by immobilizing stenotrophomonas by adopting rape straw biochar and free pseudomonas, wherein the immobilized microbial agent is prepared by immobilizing stenotrophomonas by adopting rape straw biochar; wherein both the stenotrophomonas and the pseudomonas are preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation numbers of the stenotrophomonas and the pseudomonas are respectively CGMCC No.34532 and CGMCC No.34533. According to the method, the petroleum-contaminated soil is repaired by adopting a technology of combining the immobilized microbial inoculum and the free degrading bacteria for the first time, so that the advantages of the immobilized microbial inoculum are reserved, and the degrading effect is improved through the synergistic effect of the immobilized microbial inoculum and the free bacteria. In addition, an adsorption method is used for immobilization, operation is simple, chemical reagents such as an embedding agent and a cross-linking agent are not added, and secondary pollution is avoided.
Owner:SOUTHWEST PETROLEUM UNIV