54 results about "Environmental function" patented technology

A visual quasi-rectangular shield synchronous grouting slurry diffusion mode research platform includes model soil and model slurry both equipped for realizing the indoor visual environmental function, a reduced scale quasi-rectangular shield type synchronous grouting physical process simulation test device and a commercial particle image velocimetry system, wherein the model soil and model slurry are equipped by transparent soil, the model soil is used for realizing the visual shield environment, and the model slurry is diffused by the reduced scale quasi-rectangular shield type synchronous grouting physical process simulation test device. The invention further discloses application of the platform, the visual environment is utilized to dynamically simulate and accurately observe the whole process of synchronous grouting of a quasi-rectangular shield machine, a convenient research platform is provided for the layout scheme research of grouting pipes of the quasi-rectangular shield machine, and a condition is provided for the research of the slurry diffusion mode of quasi-rectangular shield type synchronous grouting.

In illustrative implementations, a time-of-flight camera robustly measures scene depths, despite multipath interference. The camera emits amplitude modulated light. An FPGA sends at least two electrical signals, the first being to control modulation of radiant power of a light source and the second being a reference signal to control modulation of pixel gain in a light sensor. These signals are identical, except for time delays. These signals comprise binary codes that are m-sequences or other broadband codes. The correlation waveform is not sinusoidal. During measurements, only one fundamental modulation frequency is used. One or more computer processors solve a linear system by deconvolution, in order to recover an environmental function. Sparse deconvolution is used if the scene has only a few objects at a finite depth. Another algorithm, such as Wiener deconvolution, is used is the scene has global illumination or a scattering media.

The invention relates to a preparation method of magnetic composite catalyst Ag / HNTs / Fe3O4, and belongs to the technical field of environmental function material preparation; a simple and effective chemical reduction method is used to prepare a Fe3O4 / Halloysite Nanotubes (HNTs / Fe3O4) magnetic composite material, then a silver nitrate solution and ammonia are mixed into a fresh silver ammonia solution as an oxidizing agent, glucose is used as a reducing agent, Ag nanoparticles are deposited on the magnetic composite material by a silver mirror reaction to prepare the magnetic composite catalyst Ag / HNTs / Fe3O4, and the magnetic composite catalyst Ag / HNTs / Fe3O4 is used for catalytic degradation of p-nitrophenol in a water solution.

The invention relates to a preparation method of a bionic dopamine-modified lithium-ion imprinted polyvinylidene fluoride (PVDF) membrane and application of the bionic dopamine-modified lithium-ion imprinted PVDF membrane, belonging to the technical field of environmental function materials. Polyvinylidene fluoride (PVDF) is taken as a base membrane material, surface hydrophilic modification is carried out through dopamine, and a dopamine membrane is formed on the surface to improve the adhesivity and the hydrophilcity of the membrane material; the surface modification is carried out by using a silane coupling agent to further improve the performance of the membrane; and finally the bionic dopamine-modified lithium-ion imprinted PVDF membrane with high selectivity and good adsorption property is prepared through an imprinting polymerization process. The preparation method has a relatively good application prospect.

The invention belongs to the field of environmental function material preparation and pollutant treatment and relates to a preparation method of bamboo nanocellulose/reduced graphene oxide composite carbon aerogel. The preparation method comprises the steps of firstly adopting bamboo as a raw material, preparing the nanocellulose through a peroxide pretreatment method and an ultrasonic stripping method; inducing nanocellulose and graphene oxide solution gelatinization through ethylenediamine to prepare the bamboo nanocellulose/graphene oxide aerogel; and washing to remove residual ethylenediamine and obtaining low-density, hydrophobic, porous and flame-retardant bamboo nanocellulose/reduced graphene oxide composite carbon aerogel by combining a freeze drying method and a high-temperature pyrolysis method. The material has high adsorption capacity on oil and organic solvent pollutants. By adopting cheap and renewable bamboo as the raw material, the prepared composite carbon aerogel material is excellent in performance and suitable for large-scale production.

The invention discloses an environmental function material based on nanometer particles hydrous manganese oxide and the corresponding preparation method. The frame of the material is cation exchange resin; the appearance of the material is black spherical particle with the particle size being 0.4 to 1.5 mm, the surface area being 3 to 30 m <2>/g, and the mean pore size being 0.5 to 10 nm; the solid supported quantity of the hydrous manganese oxide is 10 to 100 mg/g resin counted by manganese. The steps of the preparation method are that: a water soluble Mn (II) salt is dissolved in water to obtain a solution A; the cation exchange resin is put into an adsorption column and the solution A is led to flow through the column to contact and exchange with the resin; the obtained cation exchange resin is added into the mixed solution of sodium hypochlorite and NaOH for reacting 12 to 48 hours, and the solution is stirred continually during the reacting process; the resin is taken out and washed by distilled water until the Ph value reaches 6 to 8; the required materials are obtained after the resin is dried. The composite material obtained by the preparation has extremely high adsorptive selectivity and adsorption capacity to heavy metals, and can reduce the concentration of common heavy metals such as Pb <2+>, Cd <2+> and Zn<2+> to the Safety Control Standard.

The invention relates to a transformer station noise reduction method; the method comprises the following steps: handling transformer station main sound source equipment and structure layout according to transformer station construction civil engineering drawings and equipment lists; selecting a reference station; using field measure and noise mapping technology to predict noise frequency spectrum characteristics and propagation influence rules of a newly built transformer station; carrying out type selecting and application designs for low frequency noise reduction sound absorbing materials, structure and devices; combining finite element simulation analysis, considering sound field, flow field and heat effect multi-field coupling, and carrying out scheme simulation optimization design while satisfying noise reduction, heat radiation and air channel optimization factors, thus reducing station border noise emission from the sound absorption, sound insulation and noise abatement aspects. When the construction is finished, the measured station border noise is 43.61dB, thus satisfying I type sound environment function zone standards; the novel method can effectively control station border noise emission, thus providing references for designs of same type transformer stations under increasingly strict environmental protection requirement situations.

The invention relates to the field of environmental function adsorbents, in particular to a method for preparing a heavy metal ion imprinting material with a microwave-assisted inverse emulsion polymerization method and an application of the heavy metal ion imprinting material. The method includes the steps that heavy metal ions serve as imprinting ions, cyclodextrin matter and acrylamide matter are used as functional monometers, the functional monometers are polymerized in a microwave-assisted mode with the inverse emulsion method, and the imprinting material with the small and even particle size is prepared. The method for preparing the heavy metal ion imprinting material is easy to operate, and the imprinting material has the advantages of being small in particle size, large in specific surface area, high in specific adsorption capacity and the like.

The invention discloses a recovery method of a sulfonated polyether ether ketone (SPEEK) / polyaniline (PANI) / propylene glycol monomethyl acetate (PMA) composite proton exchange membrane. The composite proton exchange membrane is formed by composition of SPEEK with sulphonation degree of 50%-70%, PANI and PMA. The membrane is firstly pretreated. Then the membrane is dissolved into 1-methyl-2-pyrrolidone solutions to produce membrane solutions. Eventually, casting film forming is carried out to produce a recasting membrane, and the proton exchange membrane is formed. The recovery method has the advantages that a waste membrane or leftover materials of the SPEEK / PANI / PMA composite proton exchange membrane are used as the raw materials, sources of the raw materials are wide, raw material cost is low, the recovery preparation process and needed instruments are simple, manufacturing cost of the membrane is reduced, meanwhile, the problem of treatment of the waste membrane is solved, environmental pollution is avoided, and significant environmental functions are achieved.

The invention discloses a preparation method of a diatomite-based interior wall functional material, which comprises the following steps in sequence: a) weighing diatomite, sintering aid, dispersant, water, and binder according to a certain ratio and then mixing , add zirconia balls and grind in a high-efficiency fast grinder, filter and dry in an electric blast constant temperature drying oven, and then calcined after crushing and electro-hydraulic sample preparation to obtain a diatomite-based functional ceramic body; b) silicon A certain amount of tourmaline, sintering aid, water, dispersant, and binder are added to diatomite, and after ultra-fine grinding, the slurry is sprayed onto the surface of diatomite-based functional ceramics, dried and calcined at low temperature, that is A diatomite-based interior wall functional material with environmental functional properties was obtained. The product obtained by the invention has large specific surface area, good adsorption performance, environmental friendliness and low cost, and has good market prospect.

A hot-air vulcanization process for multi-layer winding rubber straight tubes with polyester film as the coating layer. Polyester film is used as the coating layer of rubber tube vulcanization. During vulcanization, the product quality can be guaranteed without applying vulcanization pressure, reducing It reduces vulcanization energy consumption, saves cost, and can make the vulcanized hose surface smooth and beautiful without impurities. Moreover, this kind of polyester film can be recycled and reused. In the environment where existing resources are becoming more and more scarce, it plays the role of environmental protection and resource saving; It is very good to ensure the safety of production. The rubber hose produced by the invention can be used for the flexible connection of diesel engine pipelines or the flexible connection of water and gas pipelines of equipment such as automobiles and engineering machinery.

The invention discloses a method for constructing a root system permeation enhancing landscape plant community. The method includes measuring root system data of common landscape plants and corresponding physical-chemical properties of soil, acquiring relation data between the landscape plants and soil permeation, ranking the comprehensive permeation enhancing ability of the landscape plants for the soil, and selecting landscape plant species having high permeation enhancing ability; dividing the landscape plants into a strong functional type, a intermediate functional type, and a weak functional type according to the comprehensive permeation enhancing ability of the landscape plants for the soil; and planting the landscape plants in a planting region in a complex manner, and forming a complex hybrid plant community. The complex hybrid plant community includes a landscape community suitable for high tread frequency green lands and a landscape community suitable for low tread frequencygreen lands. The constructed landscape plant community having high rainwater root system permeation enhancing ability can store permeated rainwater and reduce surface runoff, can generate ecological benefits and play an environmental function, and has an excellent landscape aesthetic function.

The invention relates to a composite photocatalyst, its preparation and application. In the invention, a graphene-PbS/TiO2 nano-composite material is adopted. Graphene and PbS semiconductor nanoparticles are compounded on an outer surface of a titanium dioxide nanotube array, an opening of the nanotube array and an inner surface through electrodeposition, thus obtaining the composite material. The novel nano-material graphene-PbS/TiO2 with efficient environmental functions can be used as a photocatalyst, and has excellent performance in treatment of organic pollutant wastewater.

The invention relates to the technology of natural zeolite material modification and aims to provide a nitric oxide adsorbent prepared by supercritically modifying natural zeolite. The adsorbent is prepared by a method comprising the following steps: dissolving a volatile metallo-organic compound into a supercritical medium and placing the natural zeolite undergoing dealuminzation and ammonium exchange in the atmosphere to carry out supercritical replacement in the supercritical atmosphere; drying at the temperature of 120 DEG C after alcohol washing and water washing and then roasting at the temperature of 300-600 DEG C, thus obtaining the metal element containing nitric oxide adsorbent prepared by modifying natural zeolite, wherein the volatile metallo-organic compound is any one of ester, alcoholate or corresponding metal chloride which can be dissolved in the supercritical medium of Ti, Zr, Al, V or Sn. The adsorbent can be used as the environmental function material and is used for adsorbing and purifying the industrial tail gases, flue gases and automobile tail gases containing nitric oxides. The nitric oxide adsorbent has low production cost and has wide market prospect as the environmental function material.

The invention relates to a multifunctional antigas tapestry, which is mainly used to overcome the defect of the prior common tapestry with only appreciation of art and without absorption function for noxious gas and radiation ray. The multifunctional antigas tapestry is characterized in that the tapestry can be made by taking the activated carbon fiber yarn as raw material and using the weaving method of common carpet; or taking the activated carbon fiber felt as raw material and coating a layer of cotton or silk fabric with flare or other artistic effect on the felt surface (the felt surface must be polished before processing) based on the coating technique; or taking the activated carbon fiber fabric as raw material and printing the various decorative textures and patterns on the fabric surface after sewing with stacked layers; or taking the yarn mixed with activated carbon short fiber and terylene short fiber as raw material and using the weaving method of common carpet. The multifunctional antigas tapestry has the advantages that the tapestry can adsorb the toxic gas and the harmful radiation ray emitted by the decorative materials in living room, so the tapestry has not only the appreciation of art but also the specific environmental function.

The invention relates to a method for repairing heavy metal cadmium contaminated soil in drought regions by the aid of populus hopeiensis. The method includes planting annual populus hopeiensis seedlings on the heavy metal cadmium contaminated soil in the drought regions according to row and plant spacing of 2*2 m at first and constructing populus hopeiensis artificial forest systems; carrying out daily management according to conventional processes and collecting and managing litter; felling the populus hopeiensis after the populus hopeiensis grows by 10 years and directionally cultivating root sucker forests in periods. The heavy metal cadmium contaminated soil in the drought regions refers to loess and is a soil parent material, the altitude ranges from 900 m to 1300 m, and the salt content of the heavy metal cadmium contaminated soil is not higher than 0.1%. The method has the advantages that economic benefits can be brought by the method, and the method has ecological and environmental functions of preventing water and soil loss and biologically fixing carbon and is quite favorable for repairing the heavy metal cadmium contaminated soil in the drought regions.

Disclosed are a multi-layer special-material integrated pipe and a manufacturing technique thereof. The integrated pipe comprises an outer primary pipe and an inner secondary pipe which are produced and integrated through on-line production equipment, the primary pipe is produced in advance or online, a blank of the secondary pipe is produced online and is composed of a plastic base layer and a solid gum layer, the external diameter of the blank is slightly larger than the internal diameter of the primary pipe, the blank forms a frozen body via U-shaped deformation, and finally the frozen body is inserted into an inner cavity of the primary pipe subjected to thermal expansion to be integrated. When an integrated body is used in high temperature or extremely cold environment, the primary pipe and the secondary pipe are still firmly connected without cracking and layering. By the technical scheme, the defects of lack of smoothness and high passing resistance, or proneness to scaling and falling off, or proneness to layering and deforming, or high manufacturing difficulty and high input cost, or poor applicable temperature-difference environmental function and the like of a protective coating on the inner wall of an existing hard pipe used for water supply, gas supply and oil supply and delivery are overcome; the integrated pipe is suitable for water, gas and oil delivery of various municipal works and industrial and mining establishments, and particularly suitable for pipe products for water supply of the municipal works.

The present invention relates to a magnetic attapulgite surface imprinting hydrophilic nanometer composite material preparation method, and belongs to the technical field of environmental function material preparation. According to the preparation method, an impregnation method and a high temperature reduction method are adopted to synthesize a magnetic attapulgite nanometer composite material, wherein the magnetic nanoparticles have characteristics of uniform size and uniform distribution; with a surface silanization reaction, vinyl is grafted on the surface of magnetic halloysite, and with reverse atom transfer radical precipitation polymerization, the molecular imprinting polymerization layer covered on the magnetic attapulgite surface can be well controlled to tens of nanometers; and due to the presence of the ATRP active group on the outer surface, the hydrophilic polymer brush is successfully grafted, and is successfully applied for selective removal and rapid magnetic separation of sulfamethazine in the water environment, and an excellent reproduction performance is provided.

The invention belongs to the field of water treatment technology and environmental function materials, and particularly relates to a preparation method of a nickel-based catalyst for treating alkalineorganic waste water. Reagents used in the preparation method are nickel salt, ammonia water and sodium hydroxide, a nickel-based catalyst precursor can be synthesized in one step by adjusting the synthetic temperature as well as the concentration of a nickel salt, ammonia water and sodium hydroxide solution, the operation is simple and safe, nontoxic, harmless and easy to control; and the nickel-based catalyst can be prepared by virtue of simple calcination. The invention provides a method for preparing a high-dispersity flaky nickel-based catalyst, and the nickel-based catalyst prepared in acalcining manner at 450 DEG C under the protection of nitrogen has optimum activity; and the activation efficiency of an oxidant S2O8<2-> can be improved by utilizing the prepared high-performance and stable nickel-based catalyst, so that the reaction rate of an advanced oxidation technology in the alkaline organic waste water treatment can be increased, and the energy consumption can be reduced.

The invention relates to a high-selectivity cauliflower-shaped lithium ion absorbent, and a preparation method and an application, and belongs to the technical field of preparation of environmental-function materials. The preparation method comprises the following steps of: firstly dissolving 12 crown-4-ether and lithium perchlorate in acetonitrile solution, and fully and uniformly mixing; then adding acrylamide, and slowly stirring for a period of time at a normal temperature; then adding N' N-methylene bisacrylamide and azodiisobutyronitrile, introducing N2 for minutes, then sealing, putting in a water-bathing oscillator, and oscillating at a constant temperature and standing for a night; and finally, washing by using methyl alcohol and drying products obtained by centrifugation, carrying out acid washing in diluted HCl solution, washing off lithium ions, and drying to obtain the cauliflower-shaped lithium ion absorbent (Li-IIP). The Li-IIP prepared can recognize and separate the lithium ions selectively.

The invention belongs to the technical field of environmental function material preparation and relates to a preparation method of a magnetic silicon-coated yeast grafted polyethyleneimine biological composite material for adsorptive separation of cerium ions and strontium ions. According to the technical scheme, the preparation method comprises the following steps: at first, ultrasonically mixing activating yeasts with magnetic nanoparticles, and reacting the mixture with triethylamine and 3-chloropropyl trimethoxysilane in a methylbenzene system to prepare magnetic silicon-coated yeasts; then, adding polyethyleneimine as a functional monomer, producing a substitution reaction of chlorine groups on the surfaces of the magnetic silicon-coated yeasts with a polyethyleneimine solution, and grafting polyethyleneimine onto the surfaces of the magnetic silicon-coated yeasts to prepare the biological composite material. According to the method, the yield of a matrix material is increased; a prepared adsorbent overcomes the deficiency of low mechanical strength of a conventional biological material, is good in magnetic responsibility, can achieve quick separation, is higher in adsorption capacity and adsorption kinetics performance, and can achieve the purpose of quick and efficient adsorptive separation of the cerium ions and the strontium ions.

The invention relates to a method for treating a calcium farmland with heavy metal copper and lead combined contamination by utilizing elms. The method comprises the following steps: firstly, performing sealing treatment on the calcium farmland with heavy metal copper and lead combined contamination; then, planting elm seedlings on contaminated soil according to a row spacing of 1.5*2m, and performing daily management according to the conventional method so as to construct an elm plantation treatment system; and finally, replacing the elm plantation according to the commercial forest aim. The method disclosed by the invention can bring economic benefits and has important ecological and environmental functions, so the method contributes to treating the calcium farmland with the heavy metal copper and lead combined contamination.