40 results about "Indigenous microorganisms" patented technology

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.

The utility model discloses an isolation belt device for blocking and treating acid mine wastewater, and belongs to the technical field of mine wastewater isolation. The device comprises a buoy, an isolation belt fixing frame is arranged at the bottom of the buoy, a weight settling box is arranged at the bottom of the isolation belt fixing frame, and filler is filled in the weight settling box; biomass filler is arranged in the isolation belt fixing frame, and three-dimensional elastic brush filler is arranged on the front side and the rear side of the isolation belt fixing frame in a binding mode. The device disclosed by the utility model is simple in structure, can be effectively assembled according to site conditions, can be in contact with the bottom, realizes multi-depth treatment, can effectively reduce the concentration of dissolved oxygen converged into AMD, gradually improve the bottom layer environment, promote the growth of anaerobic microorganisms, perform biofilm formation synergistic treatment by using indigenous microorganisms and avoid the problem of adaptability of exogenous microbial agents, and can be effective for a long time; the cost and the risk of additionally adding nutrient sources and microorganisms are reduced.

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.

The invention provides a phosphorus release improving type compound fertilizer based on a fungal extracellular polymer, a preparation method and application, and belongs to the technical field of microorganisms, the phosphorus release improving type compound fertilizer is prepared by compounding the extracellular polymer generated by specific rhodotorula mucilaginosa WTSX01 and inorganic phosphate according to the mass ratio of 1: 9; the preparation method comprises the following steps: extracting and purifying high-activity EPS from a strain fermentation broth by a low-temperature dialysis method, separating lipid from EPS as a natural adhesive by a cosolvent extraction method, and finally mixing EPS, lipid and inorganic phosphate. The invention also discloses a synergistic application of the fertilizer and a phosphorus-solubilizing fungus aspergillus niger (CCTCC No. M2023240), so that the release efficiency of phosphorus in soil is improved; the fertilizer provided by the invention provides exclusive nutrition for phosphate-solubilizing microorganisms, effectively overcomes indigenous microorganism competition, remarkably promotes microorganism growth and phosphorus release, and realizes reduction and synergism of phosphate fertilizer and yield increase of crops.

The application discloses an iron mine tailing pond wastewater recycling device, which comprises a slag slurry pump, a primary filter tank, a plurality of comprehensive filter barrels, a medicament tank, a microbial incubator and a clean water tank. An annular flow guide cover is arranged in the middle of the comprehensive filter barrel. A flow guide pipe extends from one side of the bottom of the comprehensive filter barrel to the upper part of the center of the flow guide cover. An annular first filter plate and a second filter plate are arranged on the outer side of the bottom of the flow guide cover from bottom to top. The second filter plate is slidably connected to the flow guide cover. A plurality of sludge collecting boxes are arranged at the bottom of the first filter plate for collecting the precipitated sludge. The application can stratify the precipitated sludge and retain the sludge with high microbial activity, so that the integrated operation of rapid sampling and subsequent cultivation of the sludge can be realized, and a new idea is provided for the indigenous microbial flora to treat the tailing pond wastewater.

The invention discloses a preparation method of a biomass-based slow-release agent for repairing polycyclic aromatic hydrocarbon polluted underground water, which comprises the following steps: 1, preparation of soybean milk fermentation liquor: weighing soybeans, soaking the soybeans in ultrapure water according to a solid-to-liquid ratio of 1: 20-1: 50 for 12-48 hours, pulping, and adding ultrapure water until the volume is 500mL to obtain a soybean milk matrix; inoculating 10mL of polycyclic aromatic hydrocarbon polluted underground water indigenous microorganism bacterial liquid into the soybean milk matrix, and carrying out closed fermentation under a constant-temperature oscillation condition, 2, preparation of a multifunctional composite slow-release agent: weighing 35-60 parts by weight of FeSO4. 7H2O, 1-5 parts by weight of rhamnolipid, 5-10 parts by weight of humic acid, 1-5 parts by weight of methionine, 5-10 parts by weight of peanut peptide, 1-10 parts by weight of soybean lecithin, 3-10 parts by weight of a yeast extract and 40-60 parts by weight of the soybean milk fermentation broth prepared in the step 1; the method has the beneficial effects that the degradation efficiency on organic pollutants such as polycyclic aromatic hydrocarbon is remarkably enhanced, and a reliable material basis and theoretical support are provided for engineering application of an underground water bioremediation technology.

This invention relates to the field of food biotechnology and fermentation microbiology, specifically a method for obtaining lactic acid bacteria (LAB) isolates as starter culture candidates. The method is carried out by preparing a wheat-based fermentation substrate and adding gelatin protein as a nitrogen source to form a fermentation medium of wheat, gelatin, and fructose. Indigenous microorganisms in the substrate are inoculated into the fermentation medium and incubated under conditions that support the growth of lactic acid bacteria until lactic acid bacteria isolates are obtained. Fermentation is carried out at a temperature of 30–37°C for 12–72 hours, with a gelatin concentration of 10% (w / v) and a wheat to water ratio of 1:1 to 1:5 (w / v). The fermentation medium, a combination of wheat, gelatin, and fructose, functions as a selective medium for growing and selecting lactic acid bacteria before further isolation on standard microbiological media.This method produces lactic acid bacteria isolates that can be used as starter culture candidates in food fermentation processes.

The invention relates to a method for degrading petroleum hydrocarbon in soil by utilizing goethite reinforced endogenous microorganisms, goethite is used as a biological stimulant to activate the activity of soil endogenous functional bacteria for degrading petroleum hydrocarbon, dominant phylum of the soil endogenous functional bacteria is proteobacteria, actinomycetes and thick-wall phylum, and the relative abundance accounts for 50-80%. Under the conditions that the pH value of soil is 6.0-9.0 and the water content of the soil is 20%-50%, the degradation rate of total petroleum hydrocarbon in the soil is larger than or equal to 60%, and the degradation rate of components such as colloid and asphaltene is larger than or equal to 45%.

The invention belongs to the technical field of water quality restoration, and particularly relates to an iron-based-medical stone-persulfate composite restoration agent and a preparation method thereof. The high-dispersion and stable iron active center of the functionalized iron-based medical stone carrier can durably and efficiently catalyze persulfate to generate free radicals, ammonia nitrogen, nitrite and organic pollutants in a water body are rapidly oxidized and degraded, the active components are not easy to dissolve out or inactivate, and the oxidation efficiency is long-acting and stable. By designing the I-type assistant and the II-type assistant, the I-type assistant realizes rapid reduction of pollutants through gel slow release and microporous structure regulation and control in the initial stage of remediation. After the oxidant is used up, the anti-oxidation microcapsule wall material is gradually degraded, a nitrogen source, a carbon source, a phosphorus source and trace elements are slowly released, and growth and metabolism of indigenous microorganisms or specific florae are directionally stimulated, so that early-stage oxidation intermediate products are thoroughly mineralized into harmless substances. Meanwhile, the final product is high in mechanical strength and convenient to store, transport and add.

The application discloses a method for constructing a small watershed non-point source pollution comprehensive prevention and control system, and relates to the technical field of ecological environment protection and treatment. A small watershed needing non-point source pollution treatment is selected, a pollution monitoring point scheme is determined from a preset monitoring station site library according to geographical environment data and historical water quality data, a water channel is dug, a small watershed water system is connected with the water channel, so that exogenous water can flow into the water system, and measures such as cleaning garbage floating objects, killing waterweeds, degrading and repairing bottom mud and the like are adopted to treat the small watershed water body, so that the watershed water quality is improved in a short time. Further, a suitable area around the small watershed water body is selected to construct a healthy water ecological system, an indigenous microorganism is provided with an attachment matrix and a habitat to form a biological membrane, and a proper amount of aquatic organisms is simultaneously put into the water body, so that the water body reaches a self-purification effect, and water quality is detected regularly; the monitoring data are analyzed and evaluated through a preset non-point source pollution model, so as to provide a decision basis for comprehensive treatment.

This invention discloses a method for remediating halogenated hydrocarbon pollution based on functional plasmid transformation, belonging to the field of environmental microbial remediation technology. The method first extracts plasmid DNA carrying functional genes from organobacteria with reductive dechlorination capabilities (organobacteria with halogen respiration). Then, the functional plasmid DNA and electron donors are directly added to halogenated hydrocarbon-contaminated samples containing indigenous microorganisms to construct a bio-enhanced remediation system. Finally, the system is cultured under anaerobic conditions to transform the functional plasmid into the indigenous microorganisms, thereby endowing or enhancing the indigenous microorganisms with the ability to reductively dechlorinate halogenated hydrocarbon pollutants. This invention avoids the ecological risks of directly introducing exogenous live bacteria. Through plasmid-mediated horizontal gene transfer, it rapidly activates and enhances the function of in-situ microbial communities, significantly improving the degradation rate and thoroughness of halogenated hydrocarbon pollutants, and providing an efficient, safe, and universally applicable technical means for in-situ bioremediation of contaminated sites.

The present application belongs to the technical field of soil and groundwater pollution remediation, and particularly relates to a method for remediation of perfluoro and polyfluoro alkyl substance (PFASs) composite organic pollutants in soil and groundwater by microbial coupling with nanomaterials. The method provided by the present application promotes the growth of indigenous microorganisms by adding nutrient salts into the pollution system, so as to realize biodegradation of composite organic pollutants in soil and groundwater. The method provided by the present application also adds nanomaterials, i.e. layered double hydroxides (LDHs), into the pollution system to adsorb the composite organic pollutants, so as to improve the remediation effect by coupling with microorganisms. The method provided by the present application not only utilizes the high-efficiency degradation of microorganisms on composite organic pollutants, especially hydrocarbon substances, but also adds nanomaterials, i.e. LDHs, for adsorption, so as to effectively remediate PFASs composite organic pollutants in soil and groundwater by means of microbial coupling with nanomaterials.

The invention belongs to the technical field of microbial remediation of halogenated organic pollutants, and particularly relates to a method for removing vinyl chloride pollutants by promoting dehalogenation bacteria to perform reductive dechlorination under an oxidizing condition by using an MOFs material. According to the method, a functional MOFs material is added in the reaction process of carrying out reductive dechlorination on vinyl chloride by anaerobic dehalogenation bacteria under the aerobic condition, the anaerobic dehalogenation bacteria are coated by the MOFs material, and oxidative substances are catalytically decomposed, so that the dehalogenation bacteria are protected from being damaged by the oxidative substances in the environment, and finally complete dechlorination of vinyl chloride under the oxidative condition is realized. And converting into ethylene. Meanwhile, depending on the protection effect of the MOFs material, the problem of competitive elimination of indigenous microorganisms to anaerobic bacteria in the actual soil and underground water remediation process can be relieved or even eliminated. In conclusion, the method can effectively solve the core problems of'oxygen inactivation 'and'competitive elimination' of anaerobic microorganisms in the in-situ bioremediation application, and obviously improves the in-situ remediation efficiency of halogenated organic matters.

The invention discloses a material and method for repairing and reinforcing rock-soil ruins by in-situ excitation of indigenous microorganism mineralization, and belongs to the technical field of building material and cultural heritage protection. The method comprises the following steps: detecting and analyzing a soil sample to determine inherent key mineralized microbial flora types and soil properties of the soil sample; a specific activation solution is prepared according to the formula and applied in a grouting, spraying or building and repairing mode according to different diseases, and meanwhile, a suitable environment is built to activate and enrich the indigenous key flora; then, cementing liquid is injected into the soil in a permeating mode, activated flora is induced to be subjected to mineralization reaction to generate calcium carbonate sediment, and reinforcement and remediation are achieved; temperature and humidity maintenance needs to be carried out in the process and later period. The used materials are the activating liquid and the cementing liquid. The ruin local microorganisms are directly activated and utilized, the defect of introduction of exogenous bacteria is avoided, and the method has the advantages of uniform restoration, ecological compatibility, environment friendliness and high applicability and conforms to the minimum intervention principle of cultural relic protection.

The invention relates to the field of preparation of a multi-shell structure slow-release medicament, and discloses a preparation method of a multi-shell structure slow-release medicament for repairing petroleum-polluted underground water, which comprises the following steps: 1, preparing a nutrition matrix: the nutrition matrix comprises the following components in parts by weight: 100.0 to 150.0 parts of NaH2PO4, 500.0 to 600.0 parts of K2HPO4, 50.0 to 100.0 parts of NH4H2PO4, 50.0 to 100.0 parts of NaNO3, 10.0 to 20.0 parts of CaCl2, 50.0 to 100.0 parts of MgSO4. 7H2O, 5.0 to 15.0 parts of FeSO4. 7H2O and 0.1 to 0.5 part of VB12; and 2, preparing the slow-release medicament: preparing the slow-release medicament with a single-layer shell structure, preparing the slow-release medicament with a double-layer shell structure and preparing the slow-release medicament with a three-layer shell structure. The slow-release agent has the beneficial effects that petroleum hydrocarbon in underground water can be efficiently degraded, and the petroleum hydrocarbon degradation effect is improved by 40% or above when the slow-release agent stimulates indigenous microorganisms to act for 10 days under experimental conditions.

The invention provides a composite biological soil conditioner and fertilizing equipment thereof, the conditioner comprises multifunctional biochar, a composite microbial fertilizer, an organic matter carrier and a trace element additive, and has adsorption performance and acid-base buffering capability, and the composite microbial fertilizer comprises arbuscular mycorrhizal fungi and indigenous microorganisms. In order to solve the problems that in the prior art, antagonism of bacterial fertilizer microorganism species and indigenous microorganisms is neglected, and the application of the biochar in saline-alkali soil is limited due to the fact that the biochar is alkaline, the multifunctional biochar, the compound bacterial fertilizer, the organic matter carrier and the microelement additive are arranged; the compound microbial fertilizer has adsorption performance and acid-base buffering capacity, the compound microbial fertilizer comprises arbuscular mycorrhizal fungi and indigenous microorganisms, antagonism is reduced and synergistic effect is enhanced by optimizing the proportion, the organic matter carrier is obtained by fermenting agricultural waste and is rich in organic matter and microelements, and the microelement additive is used for supplementing soil nutrients.

The invention provides a composite enzymatic hydrolysis preparation as well as a preparation method and application thereof in aquaculture, and particularly belongs to the technical field of aquaculture. The compound enzymolysis preparation is prepared from cellulase, xylanase, medium-temperature amylase, low-temperature amylase, saccharifying enzyme, yeast extract powder and auxiliary materials. After corn flour is subjected to enzymolysis by using the composite enzymolysis preparation, the content of reducing sugar in the corn flour can be rapidly increased, and after the composite enzymolysis preparation is applied to a culture water body, the carbon nitrogen ratio of the water body can be increased, growth of indigenous microorganisms is promoted, and the self-cleaning capacity of the water body is improved; meanwhile, the compound enzymolysis preparation has a remarkable decomposition effect on moss in aquaculture water, and has a potential application prospect in moss prevention and control in shrimp and crab culture.

The invention relates to the field of environmental pollution treatment, and discloses a method for relieving environmental microflora imbalance caused by antibiotic pollution. According to the method disclosed by the invention, a guard strain meeting specific conditions is selected and inoculated into an environmental medium which is polluted by antibiotics or possibly polluted. The guard strain is capable of secreting an antibiotic degrading enzyme system that is shared by indigenous microorganisms as a "public benefit", thereby mitigating the stress of antibiotics on the community. The method disclosed by the invention not only can effectively degrade antibiotics, but also can recover and maintain abundance and diversity of environmental microbial communities, and effectively prevent enrichment of endogenous antibiotic resistance genes and other drug-resistant pathogenic bacteria.

The present application belongs to the technical field of groundwater pollution remediation, and particularly relates to an in-situ biological stimulation remediation method for treating Cr(VI) and organic compound contaminated groundwater. The method is to use sugarcane syrup as a remediation reagent to stimulate the growth and domestication of indigenous microorganisms, so as to effectively remove the compound pollution in the groundwater. The sugarcane syrup, a by-product of sugar industry, has the best effect on removing the compound pollution of Cr(VI) and nitrobenzene (the removal rate can reach 99%). The present application also determines the removal conditions of the compound pollution of Cr(VI) and nitrobenzene: pH is greater than or equal to 7, temperature is greater than or equal to 15 DEG C, Cr(VI) is less than or equal to 35 mg / L, and the concentration of nitrobenzene is less than 75 mg / L. Under the conditions, the removal rate of Cr(VI) can reach 99%, and the removal rate of nitrobenzene can reach 95%. The present application provides an innovative solution for simultaneously remedying the groundwater contaminated by Cr(VI) and organic compounds.

This invention discloses a method for the coordinated restoration of wastewater treatment plant effluent and river ecosystems, relating to the fields of environmental engineering and ecological restoration. The method involves injecting wastewater treatment plant effluent or reclaimed water into the river in a pulsed manner, constructing a flow field in the replenishment area to ensure thorough mixing of excess nutrients and indigenous microorganisms; balancing carbon, nitrogen, and phosphorus nutrients by adding a carbon source, directionally activating indigenous microorganisms and inhibiting pollution-tolerant algae, thus reducing nitrogen and phosphorus metabolism to a threshold level; layering multi-matrix carriers to restore zooplankton communities; implementing zoned dissolved oxygen control in the river section and recirculating nitrate-containing water for denitrification; and finally restoring effluent-tolerant submerged vegetation. This invention converts nitrogen and phosphorus in the effluent into ecological nutrients without relying on external microbial inoculation, full-section aeration, or large-scale supporting wetlands, reducing construction and operation costs, eliminating the risk of pollution-tolerant algae inducing initial replenishment, stimulating the river's self-repair potential, shortening the restoration cycle, and achieving a shift from artificial maintenance to ecological self-sustaining.

The invention relates to the technical field of microorganisms, and particularly provides application of trichoderma asperellum MM7 in constructing a drought-resistant banana rhizosphere microflora and improving the drought resistance of bananas. The trichoderma asperellum MM7 inoculation can relieve the inhibition of drought stress on the growth of banana seedlings and improve the water content and survival rate of tissues; the root antioxidant enzyme activity is enhanced, the accumulation of osmotic regulation substances is promoted, and the membrane lipid peroxidation degree is reduced; the expression of ABA metabolism and signal channel related genes and aquaporin genes is up-regulated; a rhizosphere bacterial community structure under drought stress is remodeled, beneficial functional bacteria such as pseudomonas, streptomyces and nitrococcus are remarkably enriched, and the drought resisting function of the bacillus amyloliquefaciens depends on indigenous microbial communities. The invention reveals that the trichoderma asperellum MM7 provides a new strain resource for developing a banana drought-resistant biological agent based on microbiome regulation through a synergistic interaction mechanism of directly regulating host physiology and gene expression-indirectly remodeling rhizosphere beneficial microflora.

The application provides a method for promoting growth and development and yield and quality improvement of traditional Chinese medicinal materials by using photosynthetic microalgae, and belongs to the technical field of microalgae application. The application provides application of microalgae capable of photosynthesis in cultivation of traditional Chinese medicinal materials, wherein the microalgae are planted on leaves of the traditional Chinese medicinal materials by foliar spraying. The microalgae capable of photosynthesis can be planted on leaves of the traditional Chinese medicinal materials, thereby promoting growth and development of angelica sinensis; endogenous hormones and microbial community composition of the leaves are changed, thereby regulating rhizosphere soil microbial community structure and function, changing soil physical and chemical properties, thereby significantly promoting yield increase of the traditional Chinese medicinal materials, reducing diseases, improving effective component content, and effectively improving stress resistance. The application further provides a cultivation method of the traditional Chinese medicinal materials, wherein the microalgae fungicide is sprayed on leaves after true leaves grow or after transplanting; the method is not affected by environmental factors, soil types, farm operations and indigenous microorganisms, and has stable effect and saves time and labor.

The present application belongs to the field of polycyclic aromatic hydrocarbons (PAHs) contaminated soil remediation technology, and particularly relates to a method for enhancing PAHs anaerobic microbial degradation in soil after persulfate (PS) oxidation by using mixed surfactants. The present application adopts a combined remediation technology of PS chemical oxidation-anaerobic biodegradation-mixed surfactant enhancement, is suitable for PAHs contaminated soil under anaerobic conditions, and can enhance the desorption capacity of residual PAHs in the soil after PS oxidation, improve the bioavailability of the residual PAHs, and enhance the anaerobic degradation of indigenous microorganisms in the soil, so that the contaminated soil can meet the environmental standards.

The present invention comprises a consortium of Lactobacillus crispatus with pathogen resistance and anti-steatosis functions for nutraceutical and therapeutic uses and method thereof. The present invention comprises an indigenous microbiota that inhibit the growth of pathogenic bacteria, including Escherichia coli, Klebsiella pneumoniae, Enterobacter hormaechei, Staphylococcus aureus, Gardnerella vaginalis and reduce the accumulation of visceral and hepatic fat.

This invention relates to the field of water treatment technology and discloses a method for treating black and odorous water bodies, comprising the following steps: S1: placement and preparation of a mixing jet mechanism; S2: stirring the water body to induce an upwelling flow; S3: adding photo-oxidation activating materials to the water body; S4: dissolving pollutants in the water body and activating the sediment and indigenous microorganisms in the water body. The technical solution of this invention can solve the problems of unstable water quality, high investment costs, easy recurrence of black and odorous water bodies, and potential secondary environmental pollution existing in current black and odorous water body treatment technologies.

The utility model discloses a three-dimensional sewage treatment device, which relates to the technical field of sewage treatment devices, and comprises a lower membrane frame, a plurality of groups of MABR membrane elements are horizontally mounted on the inner side of the lower membrane frame at intervals, each group of MABR membrane elements are connected through a lower membrane air supply pipe, a horizontally placed upper membrane frame is arranged above the lower membrane frame, and the lower membrane frame is connected with the upper membrane frame through a lower membrane air supply pipe. The upper membrane frame is internally provided with a plurality of groups of membrane components which are distributed on an upper layer and a lower layer at intervals, each group of membrane components is connected through a connecting pipe, the uppermost membrane component is an aeration membrane aerobic layer, the middle layer is a bubble-free MABR membrane, and the bottom layer of the upper membrane frame is provided with an aeration pipe. By adopting the MABR membrane element and the membrane component curtain type membrane component, the device is high in impact resistance, in-situ indigenous microorganism biofilm formation capability and pollutant degradation capability, flexible in structure, capable of rapidly improving water quality, low in cost, simple in operation, energy-saving, movable, high in efficiency and remarkable in landscape ecological effect.

The application belongs to the technical field of soil remediation, and particularly relates to a multi-enzyme nano remediation agent and a preparation method and application thereof. The application provides a multi-enzyme nano remediation agent, which comprises multi-enzyme nano remediation agent A and multi-enzyme nano remediation agent B. The multi-enzyme nano remediation agent A comprises sugarcane molasses, chitosan, wheat bran, oxidase, dry yeast, protease, cellulase, castor oil and water. The multi-enzyme nano remediation agent B comprises peanut shell powder, monoammonium phosphate, ferrous sulfate, denatured shell powder, nano silicon dioxide and vegetable oil. The multi-enzyme nano remediation agent A and the multi-enzyme nano remediation agent B are used in combination to improve the degradation rate of indigenous microorganisms in decomposing petroleum hydrocarbons, and shorten the bioremediation cycle of petroleum hydrocarbon contaminated soil.

The invention discloses a risk partition-based polluted site differentiated microbial remediation strategy generation method and system, particularly relates to the technical field of management decision of polluted site remediation engineering, and is used for solving the problems of inappropriate remediation resource allocation and low efficiency caused by neglect of site internal risk difference in an existing microbial remediation strategy. Key site background factors influencing the microbial remediation efficiency are identified by obtaining site environment survey data, and potential microbial remediation efficiency response units are divided according to the key site background factors; evaluating the dynamic migration potential of pollutants in each unit to generate a migration risk level, and determining a specific link of the unit in risk transmission in combination with the spatial position of the unit; a microbial remediation technology which is suitable for blocking corresponding risk transmission and is high in ecological integration is screened out from a remediation technology library by evaluating the functional compatibility of the candidate remediation technology and the unit indigenous microbial community; and finally, generating a sub-unit remediation strategy for each unit to form a coordinated and unified overall microbial remediation strategy.

The application discloses a sand land carbon fixation and ecological collaborative improvement method and system based on new carbon collection materials, relates to the field of soil improvement and ecological restoration, and specifically relates to a sand land carbon fixation and ecological collaborative improvement method and system based on new carbon collection materials. The method comprises the following steps: base construction, mixing new carbon collection material products A and B with sand in a dynamic ratio to form an artificial soil base layer with water and fertilizer retention capacity, and storing carbon in coal; system activation, activating indigenous microorganisms by applying bioactive agent product D, and combining with nutrient slow-release body product C to construct rhizosphere microecology; carbon sink monitoring and certification, monitoring soil organic carbon by means of the Internet of Things and certifying according to international standards; zero-carbon agricultural product production, using the system material as the main fertilizer to produce zero-carbon agricultural products. The new carbon collection material is prepared from low-rank coal as raw material through low-temperature catalytic conversion and the like, and contains more than 25 kinds of small-molecule organic acid complexes. The system contains preparation, application, monitoring and certification, and production modules, and realizes sand land carbon fixation and repair and zero-carbon production.

The present application relates to the technical field of urban water pollution ecological restoration, in particular to a zeolite composite material for in-situ remediation of black and odorous water body and improvement of sediment structure, which is characterized by the following technical scheme: the zeolite loaded iron-manganese bimetal composite material is prepared by using natural zeolite powder as a carrier, modifying the carrier with ferric chloride and potassium permanganate as Fe source and Mn source, and then performing a centrifugation-washing-drying-pulverizing-calcination process to obtain the composite material.The composite material is applied to black and odorous water body and sediment, which can quickly and effectively remove pollutants in overlying water, improve the oxidation-reduction potential (ORP) and dissolved oxygen (DO) through the principle of micro-battery, improve the living environment of indigenous microorganisms, activate indigenous microorganisms in the water body, gradually restore the integrity of the water body ecosystem, realize the self-activation repair process, and coordinate the removal of pollutants in the water body and sediment with the improvement of the micro-ecological environment to promote the restoration of self-repair function, and fundamentally improve the water body ecosystem.