298 results about "Environmental remediation" patented technology

The invention relates to the technical field of environmental restoration, in particular to a slow-release material for synergistically restoring heavy metal and organic compound contaminated soil based on modified biochar and microorganisms and an application method thereof.The slow-release material is prepared from, by weight, 50-80 parts of modified biochar, 30-40 parts of sodium alginate, 10-20 parts of gelatin, 5-10 parts of glycerin and 3-5 parts of calcium carbonate. The multi-modified biochar is prepared from, by weight, 300-400 parts of a functional flora mixed solution and 5-10 parts of mixed nutrient elements of glucose, yeast extract and KHPO, and through the synergistic effect of the multi-modified biochar and the functional flora, efficient immobilization (the immobilization rate gt is 60%) of heavy metal (lead, cadmium and chromium) and efficient degradation (the degradation rate gt is 70%) of organic pollutants (polycyclic aromatic hydrocarbon and petroleum hydrocarbon) are achieved.

The invention relates to the technical field of environmental remediation, and particularly discloses a soil remediation agent for heavy metal pollution and a preparation method of the soil remediation agent. The soil remediation agent is prepared from 30 to 40 parts of modified biomass charcoal, 15 to 20 parts of chitosan-humic acid composite gel, 5 to 8 parts of arbuscular mycorrhizal fungal spore suspension, 3 to 5 parts of heavy metal-resistant microbial strains, 2 to 3 parts of plant-based nano zero-valent iron, 10 to 15 parts of sodium alginate solution, 1 to 2 parts of compound enzyme preparation and 8 to 12 parts of bio-based calcium carbonate. According to the invention, the adsorption material is prepared from the waste biomass, and a dynamic response remediation system is constructed by combining microbial microencapsulation and multi-component synergistic proportioning, so that efficient fixation of heavy metals, soil ecological protection and remediation cost optimization are realized, and the problems of high reversibility risk, large ecological disturbance, insufficient soil adaptability and the like of a traditional remediation agent are solved.

The invention relates to the technical field of biomass-based semiconductor bifunctional materials and environmental restoration, in particular to a Baijiu vinasse biochar / cerium oxide / cadmium zinc sulfur solid solution heterojunction bifunctional material as well as a preparation method and application of the Baijiu vinasse biochar / cerium oxide / cadmium zinc sulfur solid solution heterojunction bifunctional material. The method comprises the following steps: in an inert atmosphere, carrying out pyrolysis on waste Baijiu vinasse to obtain biochar; the method comprises the following steps: mixing biochar and an activator, and carrying out activation pyrolysis in an inert atmosphere to obtain alkali-activated biochar; the preparation method comprises the following steps: dispersing a cadmium source, a zinc source, thiourea, a surfactant, alkali-activated charcoal and cerium dioxide in a solvent to form a dispersion liquid, and carrying out a heating reaction to obtain the Baijiu vinasse charcoal / cerium oxide / cadmium-zinc-sulfur solid solution heterojunction bifunctional material. The adsorption performance of the material is improved due to the remarkable specific surface area of the alkali-activated biochar component; the construction of the cerium oxide / cadmium zinc sulfur solid solution heterojunction significantly accelerates the migration of photon-generated carriers, endows the material with excellent adsorption-photocatalytic performance, has good reusability, and can remove pesticide pollutants in water.

The invention discloses a portable field screening device for environmental remediation microbial strains, and relates to the field of environmental remediation. The invention relates to a portable field screening device for environmental remediation microbial strains, which comprises a tank body which is a high-strength and light-weight aluminum alloy tank, and further comprises a filter cartridge arranged in the tank body, a filter element arranged in the tank body, and a filter element arranged in the tank body, the driving motor is fixedly connected to the upper end of the tank body; the driving shaft is fixedly connected to the output end of the driving motor; solid-liquid separation of the soil turbid liquid is efficiently completed through a centrifugal and ultrafiltration graded filtration mode, compared with a traditional method, the device has the advantages of being high in portability, high in separation efficiency and good in effect, impurities can be accurately intercepted, microbial losses are reduced, microbial strains with specific functions are rapidly screened for an environment restoration site, a high-quality bacterium-containing liquid sample is provided, and the method is suitable for popularization and application. The efficiency and accuracy of screening of microbial strains in environment restoration work are improved, and efficient development of the environment restoration work is promoted.

The invention relates to the cross technical field of industrial solid waste resource utilization and environmental pollution abatement, and discloses a modified fly ash environmental remediation material as well as a preparation method and application thereof. According to the material, industrial solid waste fly ash is used as a raw material, a glass body structure is destroyed through physical or chemical modification treatment, the specific surface area is increased, active functional groups such as surface hydroxyl groups are enriched, and the adsorption and fixation capacity on heavy metal lead (Pb < 2 + >) and cadmium (Cd < 2 + >) is remarkably improved. The chemical modification adopts an acid solution or an alkali solution, and the preparation method comprises the steps of raw material pretreatment, modification reaction, solid-liquid separation and washing, and drying and screening. When the material is applied to heavy metal contaminated soil remediation, heavy metal in an ion exchange state is promoted to be converted into a stable residue state, the bioavailability and the leaching risk of the heavy metal are remarkably reduced, meanwhile, high-added-value resource utilization of the fly ash is achieved, and the material has environmental, economic and social benefits and is suitable for large-scale remediation of Pb and Cd single or combined contaminated soil.

The invention belongs to the technical field of microorganisms, and discloses a novel Burkholderia cepacia HSP-21 capable of dissolving phosphorus and solidifying heavy metals and an application of the novel Burkholderia cepacia HSP-21. The novel burkholderia cepacia disclosed by the invention is Burkholderia cepacia HSP-21, and the preservation number of the novel burkholderia cepacia is CCTCC (China Center for Type Culture Collection) NO: M 20251344; the strain is preserved in China Center for Type Culture Collection on June 12, 2025, and the preservation address is Wuhan University, Wuhan, Hubei, China. The strain disclosed by the invention has relatively strong phosphorus dissolving activity, heavy metal removal capacity and curing effect, and can effectively inhibit migration and transformation of heavy metals, so that long-term stabilization of the heavy metals is realized. The strain can be applied to environmental remediation and heavy metal pollution treatment.

The invention relates to a composite ecological filler for enhancing in-situ denitrification of a river water body, a percolation system and application. The composite ecological filler is composed of an anoxic denitrification filler and a transition regulation filler or composed of an aerobic nitrification filler, an anoxic denitrification filler and a transition regulation filler; the aerobic nitrification filler comprises an inorganic mineral matrix denitrification filler, biological ceramsite, a mineral-based slow-release functional material and a microbial immobilization functional carrier; the anoxic denitrification filler comprises a sulfur-based composite electron donor material, a slow-release organic carbon source material, a zero-valent iron-based environmental remediation material and denitrifying bacterium embedding gel; the transition regulation and control filler comprises a multifunctional water treatment filter material, activated carbon and an environment response type functional microbial carrier. The invention also provides application of the composite ecological filler and a percolation system, solves the problem that the traditional denitrification filler cannot cooperatively support nitrification / denitrification due to single function, and also solves the problem that the fixed ratio of the traditional denitrification filler is difficult to adapt to dynamic fluctuation of water quality.

The present application relates to the field of garden irrigation, and specifically discloses a garden intelligent monitoring irrigation system for environmental remediation, comprising: an environmental parameter and plant health index monitoring module for real-time monitoring of environmental parameters of each plant in the garden, including soil humidity, light intensity and temperature, and plant health indexes of each plant, including growth conditions, leaf color, and calculating a comprehensive index F of each plant at any time t i (t); the present application realizes efficient and accurate irrigation management through the multiple modules integrated by the system, significantly improves the pertinence and effectiveness of irrigation, the real-time monitoring function of the environmental parameter and plant health index monitoring module enables the system to accurately capture the growth needs of plants and environmental changes, providing a scientific basis for the development of irrigation strategies, the personalized irrigation strategy not only meets the growth needs of plants, but also avoids unnecessary irrigation waste, improving water resource utilization efficiency.

The utility model relates to the technical field of water quality detection equipment, and discloses a water quality dynamic data reading device which comprises a water quality dynamic data presentation mechanism, the water quality monitoring mechanism is arranged at one end of the water quality dynamic data presentation mechanism, the water quality dynamic data presentation mechanism comprises a data processing host, a touch screen is arranged at the top end of the data processing host, and the water quality monitoring mechanism comprises three instrument bodies arranged from top to bottom. According to the utility model, each water quality monitoring instrument adopts a long rectangular structural design, and the ammonia nitrogen detection probe, the pH detection probe, the heavy metal content detection probe and the oxygen content detection probe are sequentially arranged on each surface of the outer side of the water quality monitoring instrument body, so that a plurality of water quality parameters of a water body to be monitored can be measured; the water body health condition can be evaluated conveniently, the influence of pollutants can be monitored conveniently, and an environment restoration scheme is formulated finally.

The invention discloses a carbon-deficient wastewater nitrate removal method based on water flow power, and belongs to the technical field of water treatment and environment restoration. According to the method, NO3-containing wastewater flows through a porous medium reactor at a certain flow speed, and contact between water flow and the surface of a filling material is utilized; the method comprises the following steps: by taking NO3 as a raw material, separating and inducing a contact electric effect, generating hydrogen free radicals with strong reducibility in situ, and realizing efficient non-biological reduction by utilizing a chemical reaction of the hydrogen free radicals and NO3 under the condition of not depending on an external carbon source or a chemical reducing agent. The method is mild in reaction condition, can be operated at normal temperature and normal pressure, has the advantages of simplicity and convenience in operation, low cost, no secondary pollution, wide medium source, reusability and the like, and is particularly suitable for NO3 pollution treatment in underground water, agricultural drainage and other carbon source lacking scenes.

The invention discloses an application of an aluminum toxicity relieving preparation based on xanthine in environmental remediation, and provides an environmental remediation preparation taking xanthine as a core active component aiming at the problems of plant growth inhibition and ecosystem imbalance in an aluminum polluted environment. Efficient detoxification is realized through double mechanisms of specific chelation with aluminum ions and plant physiological regulation, so that the concentration of the aluminum ions in a water body can be reduced by 48.5%, and aluminum enrichment in a plant body is inhibited; and on the other hand, xanthine obviously reduces accumulation of reactive oxygen species (ROS) induced by aluminum stress by activating a plant anti-oxidation defense system, so that the reproduction rate of the duckweed thalli is increased by 45%, and the biomass is increased by 67%, thereby reversing damage of aluminum toxicity to plant cell structures and metabolic functions. The invention belongs to the technical field of environmental restoration, and particularly relates to application of a xanthine-based aluminum toxicity relieving preparation in environmental restoration.

The invention relates to a soil environment remediation type charcoal-based organic fertilizer and a preparation method thereof, and belongs to the technical field of agricultural resources and environment. The organic fertilizer is prepared by taking charcoal as a core carrier and cooperating with excrement organic matters, a compound microbial agent, an inorganic mineral additive and a nutrition synergistic component through a multi-stage compatibility process. A triple remediation mechanism of gradient temperature pyrolysis modification of biochar, functional synergistic coupling of all components and soil heavy metal passivation-fertility improvement-structure improvement is innovatively designed. Field tests show that the effective-state Cd reduction rate of the product in Cd-polluted soil reaches up to 44.13%, the corn yield is remarkably increased, and meanwhile the use amount of chemical fertilizer is reduced by 20% or above.

This invention relates to the field of environmental remediation technology, specifically providing a method for the synergistic degradation of chlorinated organic pollutants using anaerobic microorganisms and iron-manganese minerals. The method includes the following steps: S1, after deoxygenation, water containing chlorinated organic pollutants is inoculated into a bacterial culture system, and the reaction system is placed in a constant-temperature shaking incubator for anaerobic reaction; S2, iron-manganese minerals are added to the reaction system, and a secondary reaction is carried out under aerobic conditions, thus completing the degradation of chlorinated organic pollutants. This invention significantly improves the overall purification efficiency of complex pollution systems containing chlorinated organic pollutants through an anaerobic-aerobic coupling and a synergistic biodegradation-chemical oxidation strategy, demonstrating promising application prospects.

The invention relates to the technical field of environmental remediation microorganisms, and discloses a mixed polycyclic aromatic hydrocarbon degrading bacterium G3 suitable for variable environments and application thereof. The bacterial strain is pseudoxanthomonas sp. G3, and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC M 20251828. The strain G3 is enriched and separated from soil of a certain coking plant in Beijing, can utilize polycyclic aromatic hydrocarbons such as acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene as a single carbon source, and can simultaneously degrade acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene mixtures within 14 days, so that the degradation rate of each component is not lower than 70%; good growth and degradation activity are maintained under the conditions that the temperature is 20-37 DEG C, the salinity is 0-4% NaCl and the pH value is 5.0-9.0, and the degradation rates can reach 100% and 84.15% respectively after the strain is cultured in a single carbon source culture solution with the initial concentration of phenanthrene and pyrene being 50 mg.L <-1 > for 7 days; after the polycyclic aromatic hydrocarbon aging polluted soil is cultured for 28 days, the mixed polycyclic aromatic hydrocarbon in the soil can be effectively removed. According to the invention, the technical bottlenecks of poor environmental adaptability and low mixed pollutant degradation efficiency of the existing degrading bacteria are solved. Therefore, the strain has good application potential in the aspect of bioremediation of the polycyclic aromatic hydrocarbon polluted environment.

The invention relates to the technical field of environmental remediation, and particularly provides a bifunctional copper-based coordination polymer photocatalyst as well as a preparation method and application thereof.The bifunctional copper-based coordination polymer photocatalyst is prepared from copper chloride dihydrate, 4, 4 '-bis (3-pyridinecarboxamide) diphenyl ether and benzoic acid as main raw materials by adjusting reaction parameters. And reacting in a hydrothermal kettle to generate the bifunctional copper-based coordination polymer photocatalyst {[Cu2 (3-padpe) 2Cl2]. H2O} n. The method has the characteristics of simple process, low cost, high catalyst activity, good stability, reusability and the like, shows good application potential in repairing water bodies and soil polluted by organic matters and heavy metals, and provides a new research thought and insight for development of a novel multifunctional environment repairing agent.

This invention related to photobioreactor providing a modular, scalable, and sustainable system for efficient microalgae cultivation, addressing diverse applications such as biomass production, environmental remediation, and bio-compound extraction. This system includes; a body constructed within a standard 20-foot corten steel, an airtight chamber which occupies approximately three-quarters of the body's internal volume for 10 containing the freshwater or saltwater needed for microalgae cultivation, a lightning system (3) including a plurality of LEDs which are programmable and adjustable in both intensity and duration, allowing precise management of lighting conditions to optimize microalgal growth, which is installed on the body ceilin an aeration and mixing system that providing CO2 for photosynthesis from air by a compressor (1) and 15 mixing the biomass within the chamber, a feeding system (4) ensuring a continuous and controlled supply of essential nutrients to the microalgal culture, a photocatalytic filter (2) purifying contaminants in air before being injected into the reactor, a control unit (5) that monitors and manages all key operating parameters of the photobioreactor in real- time, such as pH, temperature, CO₂, and nutrient concentration, photovoltaic panels 20 providing electrical energy for reactor, which is mounted outside of body and a filter (8) that filters contaminants in the water which is sent by a pump.

The application relates to the technical field of nanomaterials, in particular to a hydrogen-bonded organic framework loaded nanoseelenium material and a preparation method and application thereof, wherein the preparation method comprises the following steps: preparing a hydrogen-bonded organic framework material HOF; resuspending the prepared HOF in a bovine serum albumin aqueous solution, stirring and reacting, centrifugal washing and concentrating, and resuspending in a buffer solution; on the basis of the above solution, adding a sodium selenite solution dissolved in the buffer solution to continue stirring, adding a reducing agent to react, and growing nanoseelenium SeNPs on the surface of the HOF in situ; centrifugal washing and purifying the obtained product, resuspending in a polyethylene glycol aqueous solution to react, centrifugal washing and concentrating, and obtaining HOF@SeNPs. The prepared HOF@SeNPs are suitable for the fields of plant selenium-rich cultivation, crop heavy metal pollution control, animal cadmium poisoning relief, selenium-rich animal product feeding and the like, and provide a new idea for green agriculture and environment remediation and selenium element strengthening of agricultural products.

This application discloses a method and its application for in-situ construction of hierarchical porous photocatalytic foam ceramics based on the pyrolysis of carbonates and / or oxalates. This method introduces a full spectrum of carbonate and / or oxalate precursors, including alkaline earth metals, transition metals, rare earth elements, and bismuth-based precursors, into an organic foam impregnation system. Combined with a gradient heat treatment process, during sintering, the following are simultaneously achieved: in-situ pyrolysis of the precursors to generate a highly dispersed metal oxide photocatalytic active phase; synergistic construction of micro- and macro-hierarchical channels through gas release and template decomposition; and in-situ construction of photocatalytic heterostructures based on a combination of metal cations. The resulting material possesses a three-dimensional interconnected pore structure, excellent mechanical stability, and broad-spectrum photocatalytic activity, enabling efficient degradation of recalcitrant emerging pollutants in water, such as antibiotics, perfluorinated compounds, and bisphenol A. This provides a structure-function integrated material solution for the engineering application of photocatalysis technology in environmental remediation.

The invention discloses Aeromicrobium phocebe JP4 and application of the Aeromicrobium phocebe JP4, the strain is separated from a soil sample collected from a garbage treatment plant and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC NO: M 2026184. The marsulfamicrobe JP4 is a newly separated strain and can be used for commercialized polyurethane sponge degradation treatment, the weight loss of the polyurethane sponge treated for 28 days based on the marsulfamicrobe JP4 can reach 32.44%, the degradation efficiency is high, and a novel strain resource is provided for green treatment and environment restoration of polyurethane products.

The utility model belongs to the field of vegetation transplanting devices, and particularly relates to a vegetation transplanting device for mine environment restoration, which comprises a frame, a leveling mechanism is arranged at the bottom of the frame, an electric push rod is fixedly mounted in the frame, and the tail end of a telescopic shaft of the electric push rod is fixedly connected with a connecting block. A shovel plate is slidably connected to the outer side of the connecting block, a connecting frame is fixedly connected to the top of the shovel plate, a supporting column is fixedly connected to the upper end of the frame, and a top plate is fixedly connected to the top of the supporting column. The leveling mechanism is arranged at the bottom of the frame, the adjusting rod is screwed, the adjusting rod transversely moves through thread movement between the adjusting rod and the hollow sleeve, and the ball head at the tail end of the adjusting rod can apply downward thrust to the sliding leg, so that the extending length of the sliding leg between the hollow sleeves is controlled, and the overall levelness is further adjusted; the perpendicularity of vegetation during transplanting is guaranteed, and root breakage is not prone to being caused.

The application discloses a soil passivator based on hydrotalcite and a preparation method and application thereof, and the preparation method comprises the following steps: uniformly and simultaneously dropping a mixed salt solution A containing calcium ions, magnesium ions and iron ions and a NaOH solution into a three-necked flask, keeping stirring, obtaining a dark yellow slurry after fully mixing, and then performing aging treatment, and then sequentially performing centrifugation, washing until the filtrate is neutral, and drying to obtain a ternary calcium-magnesium-iron precursor; mixing a mixed salt solution B containing silicate and dihydrogen phosphate with the ternary calcium-magnesium-iron precursor, performing reaction, performing centrifugation, and drying the precipitate to obtain the soil passivator based on hydrotalcite. The soil passivator can provide multiple reaction sites in the interlayer and the surface, and can react with heavy metal ions to form complex and precipitate, so that the toxicity of heavy metals in the soil is effectively reduced, and the soil fertility is significantly improved, and the soil passivator has a comprehensive environmental remediation and improvement effect.

The present application relates to the technical field of ecological environment restoration, and more particularly to a waste mine ecological environment restoration method and system, the present application obtains a plurality of temperature parameters and terrain parameters of each monitoring area by the unmanned aerial vehicle carrying the monitoring equipment to mark the characteristic monitoring area, obtains the surface image of each characteristic monitoring area, determines whether the characteristic monitoring area exists the deformation risk, constructs the deformation tendency characterization vector based on the surface texture contour, analyzes the homologous tendency of each deformation tendency characterization vector, determines the block tendency category of the characteristic monitoring area, and determines the optimization strategy of the environment restoration according to the block tendency category. The present application realizes the rapid identification of the characteristic monitoring area with the freezing and thawing phenomenon, adaptively determines the optimization strategy of the environment restoration according to the actual deformation characteristics in the area, and improves the reliability of the waste mine ecological environment restoration.

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.

The present invention provides an aeration and pollution purification device for water environment remediation, comprising a float and an upper bracket mounted on top of the float. A through hole is defined in the middle of the float, and a fixed ring and a driving device are mounted on the upper bracket. A rotor is rotatably mounted within the fixed ring, and the bottom end of the rotor extends through the through hole toward the lower bracket. The driving device controls the rotation of the rotor. A driven rotor is slidably sleeved on the outer wall of the rotor, and multiple aeration nozzles are mounted on the driven rotor. One end of the aeration nozzle is hinged to the driven rotor, and the aeration nozzles are connected to the rotor via a connecting rod. The ends of the connecting rod are hinged to the aeration nozzles and the rotor, respectively. The driven rotor can reciprocate along the axis of the rotor and drive the aeration nozzles to continuously swing. A submersible sewage pump is rotatably mounted at the bottom end of the rotor for supplying water to the aeration nozzles. This device enables synchronous aeration at multiple angles and in multiple ranges during aeration.

This invention provides a bubble-driven micro / nano motor, its fabrication method, and its applications, belonging to the technical field of micro / nano motors. The micro / nano motor comprises a host material and noble metal nanoparticles, wherein the host material constitutes the host of the micro / nano motor; the host of the micro / nano motor has a hollow shape with a single opening and inner and outer surfaces; wherein one of the inner or outer surfaces of the host is modified with the noble metal nanoparticles. Because the micro / nano motor host is hollow with inner and outer surfaces, and one of its surfaces is directionally modified with catalytically functional noble metal nanoparticles, the noble metal nanoparticles can react with substrates in the environment to generate bubbles, thereby achieving controllable movement of the micro / nano motor. This micro / nano motor has a highly flexible structural design, a simple fabrication method, strong operability, and is easy to adjust, showing broad application prospects in environmental remediation and biomedicine.

The invention relates to the technical field of microorganisms, in particular to deep sea thiomonas and application thereof. The strain is Sulfurimonas iocasae FCS5, and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.46387. The invention further discloses a preparation method of the Sulfurimonas iocasae strain. The deep sea thiomonas strain has the functions of carbon sequestration, denitrification, dephosphorization and production of various vitamins, and the application of the deep sea thiomonas strain in the fields of environmental restoration, biological product production and the like.

This invention belongs to the field of environmental remediation material preparation technology, and provides a porous structure-controlled activated carbon for formaldehyde adsorption and its preparation method. Eutectic microparticles are prepared by co-melting a potassium-containing activator with a nitrogen-containing precursor, which can achieve in-situ low-temperature micropore etching and nitrogen atom doping during heat treatment. Simultaneously, a microgel is prepared by complexing and self-assembling tannic acid and polyethyleneimine and mild cross-linking. This microgel acts as a soft template during the carbonization stage, constructing a continuous mesoporous network and providing abundant surface alkaline sites for the carbon skeleton. Furthermore, an inorganic nano-skeleton reinforcing agent is introduced during the forming stage, and the mechanical strength of the material is improved by microgelation treatment of the particle surface. During heat treatment, a microporous-mesoporous hierarchical pore structure is formed. Through acid washing purification and surface re-alkalization treatment, activated carbon particles with highly efficient formaldehyde capture and strong locking capabilities are obtained, showing broad application prospects in the field of indoor air purification.

The invention relates to the technical field of environmental remediation materials, in particular to a hydrogel-based curing agent as well as a preparation method and application thereof. The hydrogel-based curing agent provided by the invention can repair engineering construction repair scenes prone to water and soil loss for a long time at a time, and is short in repair period, low in cost and good in repair effect. Specifically, the invention discloses a bio-based ionic cross-linked hydrogel curing agent, sodium alginate and chitosan are taken as base materials, the structural stability is enhanced through double-particle-size nano bentonite, and a water erosion resistant curing shell layer can be quickly formed by combining the fertilizer retention function of polyglutamic acid, so that long-acting repair of a red clay slope is realized, the repair period is short, the cost is low, and the curing agent has a wide application prospect. The method is suitable for water and soil loss prevention and control projects.

This invention discloses a preparation method and application of a lauryl bisphosphonate / mesoporous hydroxyapatite organic-inorganic hybrid composite material, belonging to the field of landfill leachate treatment technology. A solution of dipotassium hydrogen phosphate is prepared and then added dropwise to a mixed solution of calcium chloride and lauryl bisphosphonate. The pH of the solution is adjusted with alkali, washed with water, and then heated and dried to obtain the lauryl bisphosphonate / mesoporous hydroxyapatite organic-inorganic hybrid composite material. This composite material exhibits strong complexing ability with various heavy metal ions, and its adsorption performance is minimally affected by soluble organic acids in landfill leachate, ensuring long-term locking of heavy metal ions and avoiding secondary pollution caused by the re-dissolution of heavy metals. It has strong market potential and application value in the fields of landfill leachate treatment and environmental remediation.

This invention provides a tiered biological ecological filter bed purification system using functionalized porous media, relating to the field of environmental remediation technology. The system comprises a primary purification zone, a secondary purification zone, a tertiary purification zone, an underwater deep purification zone, and an aquatic animal habitat, sequentially connected along the water flow direction. Each purification zone is arranged in layers from top to bottom and is respectively equipped with soilless hydroponic plants, large-particle-size functionalized porous media, medium-particle-size adsorption-type functionalized porous media, small-particle-size catalytic-type functionalized porous media, a biological filter, and biomimetic aquatic plants. This allows the water flow to undergo interception, retention, adsorption, and deep biochemical purification processes at each stage, improving the graded purification capacity of non-point source pollution runoff and reducing the risk of clogging.