361results about How to "No pollution in the process" patented technology

The invention discloses a production method of distiller's grain fermentation liquid fertilizer specially applied to roxburgh rose. The distiller's grain fermentation liquid fertilizer is prepared bythe step of evenly mixing 50 to 80 parts of distiller's grain fermentation extracting solution, 0.5 to 1 part of microelement, 5 to 10 parts of seaweed meal, 5 to 10 parts of natural active organism,2 to 5 parts of potassium bicarbonate, 2 to 5 parts of natural active organism and 2 to 5 parts of natural surface active agent. A preparation method of the distiller's grain fermentation extracting solution comprises the steps: evenly stirring 50 to 80 parts of distiller's grain, 50 to 150 parts of rice washing water, 1 to 2 parts of EM microflora fermentation liquid and 0.5 to 1 part of sugar, performing composting fermentation at the room temperature to obtain a distiller's grain fermentation material, stirring and extracting through a sodium carbonate water solution, filtering and performing evaporation and condensation on obtained filtrate until the density is 1.1 to 1.2 to obtain distiller's grain fermentation extracting solution. The distiller's grain fermentation liquid fertilizerdisclosed by the invention has a good use effect, meanwhile can effectively prevent pest and disease damage to the roxburgh rose and is high-efficiency environment-friendly liquid fertilizer.

The invention provides a composition for treating nerve headache and a preparation method thereof, and belongs to the technical field of medicines. The preparation method comprises the following steps: carrying out steam explosion treatment on traditional Chinese medicine powder, adding the traditional Chinese medicine powder into saline water, decocting, filtering, standing filtrate to separate out a hydrochloric acid extract, adding filter residues into ethanol, adsorbing by a magnetic adsorbent, separating by a magnet, eluting, desorbing, recovering an eluent to obtain an alcohol extract, mixing and grinding the alcohol extract, the hydrochloric acid extract and flunarizine hydrochloride / nimodipine eutectic, and filling capsules with the alcohol extract and the flunarizine hydrochloride / nimodipine eutectic. The composition for treating the nerve headache is prepared. The traditional Chinese medicine composition treats neuropathic migraine through a method of combining traditional Chinese medicine and western medicine, treats both symptoms and root causes, and is good in effect and quick and lasting in effect.

This invention discloses a downconversion fluorescence thermometry method based on bilinear mode, implemented using a hardware system. The hardware system includes a 280nm light-emitting diode, two convex lenses, and a Tb... 3+ :Cs2Na 0.9 Ag 0.1 The system comprises InCl6 temperature-sensing material, a grating spectrometer, an oscilloscope, a signal generator, a computer, and a thermostat. The specific implementation steps are: signal excitation and acquisition; temperature calibration; actual temperature measurement; and high measurement accuracy: VPR mode linear correlation coefficient R² ≥ 0.998, FL mode linear correlation coefficient R² ≥ 0.992, avoiding measurement errors introduced by the exponential bias or correction term of traditional FIR technology, thus fundamentally improving temperature measurement accuracy.

The application discloses a kind of landing gear inner tube surface scratch weak magnetic flaw evaluation method, its evaluation method includes the following steps: first need to carry out surface cleaning pretreatment to landing gear inner tube to be measured, and in the condition without additional excitation magnetic field, using geomagnetic field as natural excitation source, geomagnetic field environment calibration is carried out to landing gear inner tube surface, establishes background magnetic field baseline, according to the outer diameter size and surface curvature radius R of landing gear inner tube.The application adopts flexible carrier to carry multiple sensors, and good adhesion of sensor and inner tube surface is realized by adaptive layout mode, effectively overcome the influence of landing gear inner tube cylindrical surface curvature on detection signal consistency, improve the repeatability and reliability of detection, adopt the adaptive noise suppression method based on wavelet threshold, can retain weak scratch magnetic leakage signal characteristics while effectively filtering geomagnetic background noise and circuit noise, compared with traditional filtering method has better signal fidelity.

The utility model relates to a kind of LED candle lamp based on metal fuel cell, it is characterized by: including LED electronic movement, electric core fixed shell piece, electric core module and cathode module;In the utility model, cathode metal is installed from top to bottom, and cathode metal is placed at the top cover of electric core module by cathode fixing piece directly;The installation mode of this cathode metal is convenient to replace;And by using metal fuel cell applied on LED candle lamp, it can replace existing dry battery, lithium battery, increase the use time of product, and have the advantages of environmental protection and no pollution.

A device for measuring in-situ drilling rock hardness based on a high-pressure water pressure head comprises a hydraulic power system, a data acquisition system, a test probe and a push rod, the front end of the push rod is connected with the rear end of the test probe; the hydraulic power system comprises a manual hydraulic plunger pump; the manual hydraulic plunger pump is connected with the test probe through a reversing three-way valve; the data acquisition system comprises a data recorder, a displacement sensor and a pressure sensor, the displacement sensor and the pressure sensor are arranged on the manual hydraulic plunger pump, and the displacement sensor and the pressure sensor are connected with the data recorder through a signal receiver. The device is simple in structure, convenient to operate and capable of measuring the rock strength of different drill holes, different depths and different point positions so as to obtain the distribution condition of the roadway rock strength, the measuring result is close to the on-site rock mass, a water medium is used for pressure transmission, the measuring process is simple, convenient, environment-friendly and safe, errors in the processes of sampling, processing and the like are avoided, and the working efficiency is improved. And the measurement cost is reduced.

The application provides a hole-holding stable pile type synchronous pile planting and grouting one-time pile forming construction method, uses a hole-holding stable pile type power grouting integrated drill body and a pile forming complete machine formed by the drill body. The drill body adopts a power head matched with a threaded drill rod assembly, cooperates with a hollow rotary grouter, forms an independent power transmission system and a relatively separated grouting system, and can be switched to realize multi-functional conveying of grouting, high-pressure water injection and gas injection; the end of the drill rod can be selectively matched with a fully-closed drill bit or a hollow open-close drill bit, and the conventional wall protection grouting, central soil discharge and soil taking hole cleaning operations are considered. The device integrates hoisting, pressurizing, drilling, material conveying and core planting functions, completely solves the disadvantages of the traditional pile foundation construction, such as the fragmentation of the hole guiding, grouting and core planting processes, the single equipment function, the poor pile forming precision, and the weak stratum adaptability, can realize integrated construction of hole guiding, multi-medium wall protection and synchronous core planting, has the advantages of process simplification, strong construction controllability, high pile forming quality, adaptation to various strata, slurry medium and pile type structures, and the comprehensive construction efficiency and engineering applicability are significantly improved.

The application discloses a saline-alkali soil improvement method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps: in a screw extruder, humic acid and acrylic acid are grafted and polymerized in a reaction section to form humic acid grafted acrylic acid polymer; N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine, [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide and furfural residue are sequentially added at the opening of a conveying section, and after passing through a mixing section, the mixture is extruded and granulated to obtain a conditioner; according to weight parts, the furfural residue is 70-90 parts, the humic acid grafted acrylic acid polymer is 10-25 parts, and the N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine and [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide are 1-5 parts. The conditioner is applied to saline-alkali soil by being scattered in the soil during ploughing or being applied to the soil by hole planting during sowing, so that the organic matter content of the soil can be increased, the saline-alkali components can be separated from the roots of crops, the stress of the saline-alkali soil on the crops can be effectively reduced, and the yield of the crops can be improved.

The utility model discloses a dynamic muscle nature's neck rehabilitation training brace relates to medical rehabilitation instrument technical field, and the utility model discloses a cape, and the both sides of cape outer surface and the both sides of back are all provided with servo motor and take off and put on the roll, and four servo motor output all are connected with worm, and four take off and put on the back of roll all are connected with worm wheel, and the top of cape is connected with head hoop through a plurality of ball head seat. The utility model discloses the setting of servo motor, worm, worm wheel, take off and put on the roll and first pull rope, and four servo motor outputs are driven four take off and put on the roll rotation respectively through four worms and four worm wheel meshing, thereby being convenient for to take off or put out to first pull rope, second pull rope, third pull rope and fourth pull rope, when first pull rope and second pull rope take off and third pull rope and fourth pull rope put out, make the head of patient to the right side of self inclination, do not need medical staff or family member manual traction patient head and make neck movement, and the operation is time -saving and labor -saving.

The application discloses a kind of cyanobacterial polysaccharide and PVA composite material preparation method, comprising the following steps: S1: PVA and cyanobacterial polysaccharide are dissolved in deionized water to obtain premixed solution;S2: crosslinking agent ethylene glycol diglycidyl ether is added to the premixed solution prepared in step S1 and heated to react, to obtain mixed solution;S3: tannic acid is added dropwise to the mixed solution prepared in step S2 to obtain film forming liquid, and the film forming liquid is laid flat and dried to obtain a cyanobacterial polysaccharide and PVA composite film.The application forms a crosslinked network structure by PVA, cyanobacterial polysaccharide and ethylene glycol diglycidyl ether through ring-opening reaction, while meeting biocompatibility and mechanical properties, it can greatly improve the barrier property of the material, and can be used as functional packaging film, fresh-keeping adsorption gasket, etc. for fresh fruits and vegetables, livestock and poultry meat food storage and transportation.

The utility model discloses a kind of packing machine material door device of preventing spouting, including the material door clamping plate and driving mechanism being located in the left and right sides of discharge port;Two material door clamping plates are respectively provided with material blocking structure outside front and back ends, material blocking structure includes left and right misaligned lamination material blocking blade, two material blocking blades are rotatably installed on bracket, and also connected with driving mechanism, driving mechanism drives material door clamping plate and material blocking blade synchronous swing, two material door clamping plates open, when swing clamping bag piece is supported on fixed clamping bag piece, two material blocking blades open and shield outside two material door clamping plates.This application is structural improvement on the basis of original material door clamping plate structure, under the premise of not changing original material door clamping plate, by additionally providing material blocking structure at the front end and rear end of material door clamping plate, to shield the hollow area of the front end and rear end of material door clamping plate, as far as possible guarantee the closedness of material discharge port, reduce the possibility of material spouting after falling, reduce material splashing, guarantee that packing machine discharging environment is pollution-free.

The utility model discloses a gas treatment device after gas pressure protection and safety pressure relief of an excimer laser, which comprises a rupture disk device (1) with one end capable of being communicated with a resonant cavity of the excimer laser. The other end of the rupture disk device (1) is provided with a one-way safety valve (2) which can be jacked open by working gas leaked from the resonant cavity when a diaphragm (14) of the rupture disk device (1) is ruptured, and the one-way safety valve (2) is connected with an absorption device (3) which can purify the leaked working gas; and the absorption device (3) is provided with an exhaust port (4) capable of exhausting purified gas. According to the utility model, the structure is simple, external air can be prevented from flowing backwards into the excimer laser, the internal gas is kept pure, the discharged gas is absorbed and purified, so that the discharged gas can reach the emission standard, and the harm to workers and the environment is eliminated.

The application relates to the technical field of photoelectric materials and scintillators, and particularly discloses an ionic rare earth complex scintillator glass, a low-temperature melting preparation method thereof and application. The low-temperature melting quenching process is developed, the crystalline ionic europium complex is directly melted and rapidly cooled under the condition of no solvent, and the direct preparation of the ionic rare earth complex transparent scintillator glass is realized. The prepared glass scintillator material has high transparency, high luminous efficiency, high rare earth content and excellent processability, and fundamentally eliminates the light scattering caused by particle agglomeration and phase separation in the traditional composite thin film, and breaks through the concentration quenching limitation. The glass scintillator material shows excellent luminous performance under X-ray excitation, and can significantly improve the imaging resolution and detection sensitivity. The application provides a feasible technical path for the development of a new type of rare earth scintillator material, and has important application prospects in the fields of medical imaging, nondestructive testing and high-energy radiation detection.

This invention belongs to the field of traditional Chinese medicine fermentation technology, specifically involving a high-enzyme-active Liu Shen Qu (a type of fermented medicinal herb) and its fermentation process. The process first processes red beans, bitter almonds, artemisia annua, cocklebur, and polygonum hydropiper into a medicinal porridge, which is then mixed with wheat flour and a specific fermenting agent to form a soft mass. Its innovation lies in the use of a Bacillus subtilis trehalose protective agent complex and Aspergillus oryzae chitosan microspheres. These two fermenting agents are prepared by spray drying encapsulation and ionogel methods, respectively, significantly improving the survival rate and stability of the fermenting microorganisms during processing and storage. The soft mass undergoes two stages of precisely controlled temperature and humidity fermentation, and finally, after shaping and segmented drying, the finished product is obtained. This process effectively solves the problems of low enzyme activity and poor stability in traditional Liu Shen Qu fermentation, resulting in a Liu Shen Qu product with high digestive enzyme activity and stable, uniform quality.

The utility model discloses a durable spiral net with stable air permeability, which comprises a left-hand spiral ring (1) and a right-hand spiral ring (2) which are wound by monofilaments, and the left-hand spiral ring (1) and the right-hand spiral ring (2) are sequentially and circularly crossed together to form a crossed hole (3) which is penetrated by string ring monofilaments (4) to form the spiral net. A corresponding cross-linking core wire (5) is inserted into the left-hand spiral ring (1) in the same column and / or a corresponding cross-linking core wire (5) is inserted into the right-hand spiral ring (2) in the same column, the cross-linking core wire (5) comprises a plurality of cross-linking monofilaments (51) which are arranged in parallel, and the cross-linking monofilaments (51) are fixedly connected through cross-linking points (52) to form the cross-linking core wire (5). According to the durable spiral net with the stable air permeability, the stability of the air permeability of the net surface can be guaranteed in the solid-liquid separation machining process, the solid-liquid separation efficiency is improved, meanwhile, the strength of the net surface is enhanced, the spiral net is durable, and the service life is prolonged.

This invention relates to a method for amplifying the polarization ratio of a photodetector based on a two-dimensional semi-metallic material and a heterostructure, belonging to the field of photodetection technology. Based on a strategy combining a two-dimensional semi-metallic material and a heterostructure, a BP / MoS2 / WTe2 heterojunction is constructed, where BP is the light-absorbing layer, MoS2 is the barrier layer, and WTe2 is the contact layer. This invention not only achieves selective carrier transport and reduces dark current, but also allows WTe2 to reduce contact resistance and provide a fast carrier extraction channel, realizing asymmetric amplification of the photocurrent, thereby achieving active amplification of the polarization ratio even at zero bias. This invention breaks the limitation of the inherent anisotropy of materials on the magnitude of the polarization ratio, and uses a completely dry transfer process to fabricate polarization detection photodetectors, eliminating the need for additional polarization elements and chemical solution treatment. It boasts advantages such as simple process, low cost, high repeatability, and no pollution.

The present inventive concept provides a substrate processing method and a substrate processing apparatus. The substrate processing method includes a temperature stabilization step for stabilizing a temperature of a substrate to a process temperature in a processing space for processing the substrate, a pressure stabilization step for stabilizing a pressure of a plasma space in which plasma is generated and a pressure of the processing space to a process pressure, the plasma space being in fluid communication with the processing space, and a processing step for generating plasma in the plasma space and processing the substrate using the plasma.

The present application relates to a kind of low metal ion residual chip CMP post-cleaning agent and preparation method and application.The cleaning agent includes the following components according to weight part: functional agent 8-35 parts;Chelating agent 5-15 parts;pH adjusting agent 5-20 parts;Corrosion inhibitor 0.1-1 parts;Water 30-70 parts.The present application uses the symmetrical carbon skeleton structure of triphenylene with high chemical stability as functional agent, through the combination of functional agent and chelating agent, to achieve the effect of efficiently cleaning copper wafer surface residues and quickly dissolving metal oxides.The cleaning agent of the present application is environmentally friendly, non-polluting, and has low volatile loss, and is harmless to the environment and human body.

The application belongs to the technical field of preparation of electrocatalytic hydrogen evolution catalysts, and discloses a preparation method of an electrocatalytic hydrogen evolution catalyst Pt / GaN. First, gallium nitride nanoparticles are loaded on the surface of an electrode, and then, through cyclic voltammetry, platinum is uniformly electrodeposited on the surface of the gallium nitride from an electrolyte containing chloroplatinic acid to prepare the catalyst Pt / GaN. The mass percentage of Pt in the catalyst is only 2.2-5.4%, which greatly improves the catalytic activity of the catalyst while reducing the Pt loading. From the entire preparation process, the application breaks through the limitation that the traditional platinum loading method cannot accurately control the particle size growth. The particle size of Pt in the catalyst is between 2-5 nm. On the other hand, the method has the advantages of easy availability of raw materials and environmental protection without pollution.

A method for alleviating saline-alkali stress and promoting seed germination of kudzu vine, comprising the following steps: S1, preparing kudzu vine seeds with full grains and uniform size; S2, placing the kudzu vine seeds in a culture dish with a thickness of 1-2 mm; S3, placing the culture dish containing the kudzu vine seeds in a high-voltage electrostatic field treatment device, and treating with high-voltage electrostatic field for 55-75 min; the voltage of the high-voltage electrostatic field treatment is 14-16 kv; S4, taking out the seeds and planting them in saline-alkali soil; the high-voltage electrostatic field treatment device comprises a controller, a transformer and a seed treatment device; the controller and the seed treatment device are electrically connected through wires and the transformer; the seed treatment device comprises an insulating shell and an insulating bottom plate, the insulating bottom plate is movably arranged at the bottom end of the insulating shell, and the bottom end of the insulating shell is closed; the present application provides a method for alleviating saline-alkali stress and promoting seed germination of kudzu vine, which has the advantages of simple operation, low energy consumption, green and pollution-free, fast drying speed and sterilization.

The present application relates to the technical field of lithium battery production, and discloses a lithium battery pole piece electromagnetic heating device, which comprises a box body with an accommodating cavity inside, the accommodating cavity comprises multiple sub-cavities sequentially communicated along the direction of pole piece strip conveying, multiple heating units are respectively arranged in each sub-cavity, the heating unit comprises multiple electromagnetic rollers, the multiple electromagnetic rollers are divided into an upper roller group and a lower roller group in the height direction of the box body, the electromagnetic rollers of the upper group and the lower group are staggered arranged along the direction of pole piece strip conveying, so that the pole piece is alternately attached to the surfaces of electromagnetic rollers at different heights, the electromagnetic rollers in the heating unit are divided into the upper roller group and the lower roller group and are staggered arranged along the strip conveying direction, the pole piece is alternately attached to the upper surface of the upper electromagnetic roller and the lower surface of the lower electromagnetic roller in the process of advancing, synchronous contact heating of two surfaces of the pole piece is realized, electromagnetic heating directly acts on the pole piece base material, the heat efficiency is improved, and the heat effect is uniform, contactless heating, energy saving, environmental protection and pollution free.

This invention provides a temperature-sensitive, environmentally friendly microcapsule and its preparation method, relating to the field of polymer materials. The microcapsule is composed of chitosan, cellulose derivatives, gelatin, and dopamine. The microcapsule can achieve different cross-linking structures depending on the component ratios, and can controllably release the core substance within a temperature range of 90-150℃. The materials provided by this invention eliminate toxic reagents, and the microcapsules are all environmentally friendly materials, causing no environmental pollution. The microcapsule preparation method is characterized by temperature sensitivity and controllability, being green, environmentally friendly, and pollution-free, with a simple preparation method suitable for large-scale industrial production. Utilizing temperature-sensitive, biodegradable, and comprehensively environmentally friendly materials, it has broad application prospects in catalyst coating, drug coating, and other fields, meeting the needs of multiple sectors.

This invention discloses a method for preparing pharmaceutical-grade hydrogenated palm oil glyceride. The steps are as follows: stearic acid, palmitic acid, and glycerol are melted, a catalyst is added, vacuum is applied, and the mixture is heated to react; the temperature is lowered, pharmaceutical-grade activated clay is added, and the mixture is stirred; the material is transferred to a pressure vessel; the outlet of the pressure vessel is opened, and the mixture is filtered to obtain crude hydrogenated palm oil glyceride, which is then fed into the material storage tank of a three-stage molecular distillation apparatus; the process parameters of the three-stage molecular distillation apparatus are set at a temperature of 160℃~250℃ and a pressure ≤30Pa, and the crude hydrogenated palm oil glyceride is forced into the cavity of the three-stage molecular distillation apparatus through a vacuum feeder, the feed flow rate is controlled, and the collected heavy component, pure hydrogenated palm oil glyceride, is transported through a pipeline to a rotary drum condenser crystallizer and slicing machine to obtain pharmaceutical-grade hydrogenated palm oil glyceride. This invention is simple to operate, uses readily available raw materials, has a high production yield, is environmentally friendly and pollution-free, and produces a high-purity product that meets pharmaceutical requirements.

The invention discloses a color-developable waterborne polyurethane dust suppressant and a preparation method thereof, and belongs to the technical field of dust suppressant preparation, the color-developable waterborne polyurethane dust suppressant comprises the following components by weight: 5-20 parts of waterborne polyurethane, 1-10 parts of latex powder, 0.5-5 parts of organic wax, 0.5-5 parts of color paste, 0.5-3 parts of paper pulp, 0.5-3 parts of a thickener, 0.1-0.5 part of an auxiliary agent, 5-10 parts of a film forming auxiliary agent, and 70-90 parts of water. According to the dust suppressant, waterborne polyurethane serves as a film forming substance and can be combined with coal particles to form a film layer of 1 mm-2 mm, a formed cured film is high in strength, good in toughness and high in adhesive force, pulverized coal particles can be effectively isolated, wind and rain erosion can be resisted, the dust suppression period is long, certain hydrophobicity is achieved, the dust suppressant is not prone to being washed away, the service life is greatly prolonged, and the dust suppressant is suitable for being popularized and used. And the dust suppressant takes water as a dispersion medium, the VOC content is extremely low, the selected coloring agent is environment-friendly, no pollution is caused to soil and underground water, and the development direction of green chemistry is met.

The application relates to an improved swelling soil and a preparation method and application thereof, the improved swelling soil comprising 0.4-0.8% of sugarcane residue fiber, 4-8% of biochar, 4% of cement, 0-1.25% of a pH value regulator and 85.95-91.60% of swelling soil to be improved. The application reinforces the soil structure by the sugarcane residue fiber, and restrains the deformation; the biochar is mixed to improve the water stability and structural stability of the soil; the cement is mixed to make the soil sandy and granulated, thereby improving the strength, compactness and stability of the soil; and the pH value regulator is mixed to adjust the acid-base environment of the soil, which is beneficial to subsequent ecological restoration. The application significantly improves the physical and mechanical properties of the swelling soil, effectively reduces the swelling and shrinking potential of the swelling soil, and can make the swelling soil reach an acid-base environment suitable for plant growth. Meanwhile, the solid waste is recycled, waste is turned into treasure, the preparation process is simple and feasible, and the application has good engineering application value.

The application discloses a fluorinated covalent organic framework material, a preparation method thereof and application thereof in photocatalytic production of H2O2, and the fluorinated covalent organic framework material is prepared through an aldehyde-amine condensation reaction of fluorinated phenyl (p) diamine and functionalized benzene-1,3,5-tricarboxaldehyde. Under a laboratory light source and natural sunlight, the fluorinated covalent organic framework material has excellent photocatalytic H2O2 production capacity in a pure water system, and has high activity and selectivity.

This invention belongs to the field of microbial fermentation and daily chemical technology, and discloses a polyketide alkaloid compound derived from mangrove fungi, its preparation method, and its application in antibacterial textiles. This invention utilizes the mangrove fungal strain *Aspergillus* (… Aspergillus The mycelium obtained by expanding the culture of sp. GZ12A was extracted with methanol, and the aforementioned polyketide alkaloids were obtained by separating and extracting the extract. This preparation method has a short production cycle, low cost, no environmental pollution, and is easy to mass-produce. The obtained polyketide alkaloids have excellent antibacterial properties, and their application in textiles can produce textiles that meet the requirements for antibacterial textiles.

This invention discloses a strain of *Pseudomonas aeruginosa* that produces volatile gases and antagonizes *Morchella esculenta*, the pathogen causing *Fusarium wilt*. Pseudomonas chlororaphis subsp. aurantiaca YX3, deposited at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC NO: 26192, is a strain of this invention that produces volatile gases on NA solid medium that antagonize morel wilt fungi. It significantly inhibits the mycelial growth and spore germination of morel wilt fungi and can be used to prepare fumigants for inhibiting morel wilt fungi. It is safe, efficient, and easy to operate, and has broad application prospects.

The application discloses a kind of light foam sandy soil based on low-temperature resistant microbial curing agent and its preparation method, the light foam sandy soil includes solid matter and liquid matter, the mass ratio of solid matter and liquid matter is 3.5-6:1, the proportion of each substance in solid matter is 78-84wt% of sandy soil, 12-18wt% of composite activator, 4-6wt% of bacterial foam adsorbent, and the liquid matter is cementing solution.The preparation method includes the following steps: preparing low-temperature resistant microbial curing agent;The prepared low-temperature resistant microbial curing agent is mixed uniformly with sandy soil to obtain solid matter;The obtained solid matter is mixed uniformly with cementing solution, i.e. to obtain light foam sandy soil based on low-temperature resistant microbial curing agent.The technical scheme of the application significantly improves the survival rate and mineralization efficiency of the strain in low-temperature environment, and the light foam sandy soil prepared using the technical scheme has a lower mass per unit volume, higher compressive strength and higher permeability resistance.

The application discloses an intercalation large-size graphene oxide-based lithium ion separation membrane and a preparation method and application thereof, and belongs to the technical field of membrane filtration and ion separation. The preparation method comprises the following steps: blending an oxidized graphene solution with an intercalation agent, standing to obtain a mixed solution, depositing the mixed solution on a base film, and drying to prepare a salt water lithium extraction membrane. The application also discloses the application of the graphene oxide-based salt water lithium extraction membrane prepared by the preparation method in the extraction of lithium ions from salt water. The interlayer spacing of the graphene oxide membrane can be adjusted by a specific intercalation agent to realize selective filtration of specific ions. With the increase of the size of the graphene oxide, the mechanical properties and film-forming properties of the large-size graphene oxide are improved, the stability of the membrane is improved, the membrane can be kept stable at a relatively thin thickness, and therefore, the lithium ions in salt lakes or brine can be stably extracted with high selectivity and high flux.