377results about How to "Anti-pollution" patented technology

The invention discloses a high-performance flat-type cellulose acetate / graphene blend forward osmosis membrane. 5 to 25 percent by weight of cellulose acetate, 1 to 15 percent by weight of additives, 0.01 to 2 percent by weight of graphene and mixed solvent of dimethylformamide, dimethylacetamide, or N-methylpyrrolidone and acetone are added into a dissolving tank according to a given sequence and are stirred and dissolved for 2 to 18 hours at the temperature of 5 to 75 DEG C to be uniformly mixed so as to prepare a forward osmosis membrane casting solution; the high-performance flat-type cellulose acetate / graphene blend forward osmosis membrane is prepared on a supporting material by adopting a phase inversion method. According to the forward osmosis membrane, 1M NaCl is used as a driving liquid, the deionized water is used as a raw material solution, the flux of pure water of the forward osmosis membrane is more than 21L / m<2> within the test time of one hour, and the salt flux in the reverse direction is less than 3.5g / m<2>.

The invention discloses a nano modified water-base multifunctional sound-absorbing paint and a preparation method thereof. The paint is composed of the following components in parts by weight: 28-38 parts of emulsion, 2-10 parts of pigment, 30-45 parts of filler, 15-25 parts of water, 4-8 parts of flame retardant and 2.25-5.43 parts of assistant. By optimizing the paint system structure, the polymer and filler are selected, modified and proportioned to ensure the basic mechanical properties and sound-absorbing function, and the paint has high-value service properties, such as thermal insulation, moisture resistance, fire resistance, aging resistance, fouling resistance, sterilization, air purification and the like, and is especially suitable for rooms and other occasions with higher environmental requirements.

The invention discloses a superhydrophobic inorganic organic nano composite polymeric coating material and a preparation method thereof. The coating material is prepared from 30 to 98 mass percent of thermosetting polymeric precursor and 10 to 70 mass percent of surface functionalized nanoparticle under the action of 0 to 5 mass percent curing agent, wherein the obtained surface water contact angle and rolling angle of the material are 120 to 180 DEG and 1 to 20 DEG respectively; and a falling water drop which is spherical can bounce up and can freely roll on the surface. The method has the characteristic of simple preparation process by using the chemical reaction between organic groups on the surfaces of the polymeric precursor and the modified nanoparticle in the solution. The coating material has the functions of stain resistance, dust prevention and self cleaning.

The invention discloses a preparation method of a super-hydrophobic, super-oleophobic and high transparency triple-function coating film, belongs to the field of novel materials, and particularly belongs to the field of self-cleaning optical materials. The method comprises the steps of firstly assembling large-grained SiO2 nano particles on a glass substrate, so as to form the lower layer of the fine structure of a functional coating layer, simultaneously adding pore-foaming agent, so as to adjust and control space filling factors, then assembling upper layer fluoride SiO2 nano fine particles, and constructing a two-stage uneven surface coating layer with a suspension structure and super-hydrophobic, super-oleophobic high and transparency functions. The functional film has frost prevention, fog prevention, pollution prevention, bacteriostasis and self-cleaning properties, also has excellent translucency, can effectively prevent properties of optical elements, photoelectron elements, solar batteries and laser systems from being influenced by environment in severe environment, greatly expands the application range of the equipment, guarantees the operational reliability, and prolongs the service life, thereby greatly improving the practical values of the equipment.

The invention relates to an organic silicon modified polyurethane sealing agent. The organic silicon modified polyurethane sealing agent is prepared from, by mass, 60-100 parts of toluene diisocynate, 240-470 parts of polyether N220, 200-350 parts of polyether 3050, 3-10 parts of epoxy resin E51 and 40-100 parts of organic silicon Y-9669. The sealing agent has advantages that by selection of the organic silicon Y-9669 serving as a coupling agent in a modification process, the defect of harmfulness of isocyanic acid groups in PUR (polyurethane) hot-melt adhesives to human bodies and environments are completely eliminated owing to parahelium; organic silicon which is a primer intrinsically avoids inconvenience of primer utilization in adhesion of materials such as metals and glass with the PUR hot-melt adhesives (sealants), pollution prevention, environmental friendliness, convenience in operation and the like are achieved, and a prepared product is less prone to whitening and can be used as hot-melt adhesives and sealants.

To improve not only the durability of a reflecting film but also that of a peripheral member, and to reduce manufacture loss by preventing adhesion of fine foreign materials such as dusts. Provided is a white polyester film for liquid crystal display reflectors, which contains a light stabilizer in a polyester film having fine air bubbles and has an average reflectivity of 97% or more on the surface of at least one side of the film.

This invention relates to a real time fluorescence quantitative PCR test method for H5, H7 and H9 sub-avian flu viruses including the following steps: set-up of standard molecules, the design of specific virus quantitative PCR primer and the probes, pick-up of virus sample RNA, the inverse transcription polyenzyme chain reaction to the pic-up sample RNA to get a sample cDNA, the optimization and set-up of the PCR quantitative test method for M genes.

The invention relates to a blending modified hollow polysulfone fiber film which comprises the following components in percentage by weight: 3-40 percent of polysulfone, 0.5-20 percent of porogen, 50-90 percent of organic solvent and 0.5-20 percent of inorganic nano particles, wherein the inorganic nano particles are one or the mixture of more than two of silicon oxide nano particles, titanium oxide nano particles, silicon carbide nano particles and gamma-phase aluminium oxide nano particles; the viscosity-average molecular weight of the polysulfone is 40,000-200,000; the organic solvent is one of N-methyl-2-pyrrolidone, dimethyl acetamide or dimethyl sulfoxide; and the porogen is one or a mixture of any two of polyvinylpyrrolidone, polyethylene glycol and polyvinyl alcohol. The invention improves the surface property, the hydrophilic property and the mechanical strength of the film through modifying the hollow polysulfone fiber film, has simple film preparation process, and can realize industrial mass production.

The present invention relates to paint industry technology, and is especially one kind of fluoric water-base paint. The fluoric water-base paint consists of fluorocarbon emulsion 20-90 wt%, supplementary emulsion 1-25 wt%, pigment 5-20 wt%, stuffing 1-31 wt%, dispersant 0.1-1.4 wt%, defoaming agent 0.1-0.3 wt%, wetting agent 0.3-0.5 wt%, bactericidal anti-mildew agent 0.1-0.3 wt%, filming assistant 0.01-13.5 wt%, thickener 0.01-1.1 wt% and multifunctional assistant 0.3-0.5 wt% except water. The paint has high weather resistance, high chemical corrosion resistance, antifouling property, high performance / cost ratio and other advantages.

A radon-screening water emulsoid paint used as decorative paint for preventing radon, benzene, xylene and formaldehyde from being educed from wall and adsorbing them contains water, hydroxyethyl cellulose, disperser, defoaming agent, levelling agent, light calcium carbonate, titanium oxide, bentone, talc powder, ethanediol, film forming agent, PVDF-acrylate copolymer and vinyl acetate-acrylate copolymer emulsion, and antibacterial mildew-proof agent.

The invention discloses a preparation method of matte glaze sanitary ceramic. The preparation method comprises the steps of carrying out ball milling on 27.8%-29% of quartz, 25.5%-26.9% of Changding potassium feldspar, 13.55%-15.5% of calcite, 3.83%-4.3% of dolomite, 3%-3.3% of Zhangzhou kaolin, 9%-10.1% of zirconium silicate, 9.83%-10.1% of aluminum oxide, 3.2%-3.4% of zinc oxide, 0.03%-0.04% of sodium carboxymethylcellulose and 1.06%-1.95% of sodium carbonate until the particle size of slurry is smaller than 10 microns and the ratio is 60%-65%, adding ceramic pigments, continuing to carry out ball milling until the particle size of slurry is smaller than 10 microns and the ratio is 69%-71%, sieving by virtue of a 180-mesh sieve so as to obtain uniform sanitary ceramic matte glaze slurry, spraying the sanitary ceramic matte glaze slurry to the surface of a sanitary ceramic blank, adequately drying, firing in a tunnel kiln at 1200-1250 DEG C for 15-18 hours, and cooling, so as to obtain the matte glaze sanitary ceramic product. The prepared matte glaze sanitary ceramic has a special matte effect and pure colors and is rich in aesthetic perception, and the problem of poor sewage resistance of traditional matte glaze is further overcome.

The invention provides a culture medium for selenium-rich organic edible fungi, which is mainly prepared from the following raw materials in parts by mass: 60-90 parts of culture main material, 10-25 parts of carbon organic fertilizer, 1-5 parts of selenium-rich nutrient element, 1-6 parts of root irrigation culture agent, 0.2-0.5 part of compound probiotic fertilizer and 0.1-0.5 part of plant growth promoter. The method for culturing selenium-rich organic edible fungi by using the culture medium comprises the following steps: mixing the plant growth promoter and compound probiotic fertilizer, and dissolving in water to prepare a liquid; mixing the rest raw materials, adding the liquid, and fermenting to obtain the culture medium; and uniformly mixing a strain with the culture medium for inoculation, culturing for 10-15 days until the hypha are overgrown, and reinoculating the hypha. The culture medium has the advantages of reasonable component proportioning and high growth speed of hypha.

The invention relates to a shale gas well slickwater fracturing fluid system high-efficiency emulsion quick water-soluble drag reducer, belonging to the technical field of oilfield drag reducers. The drag reducer is prepared by initiating polymerization of a component A, a component B and a component C by a free-radical initiator in water, wherein the component A is composed of a plurality of nonionic water-soluble monomers with carbon-carbon double bond; the component B is a water-soluble polymer stabilizer of univalent cationic monomers; and the component C is a univalent cationic inorganic salt. The drag reducer is simple to use, quick to hydrate and convenient to add, is green and environment-friendly, and has the advantages of high dissolution rate, no bubbling, salt resistance, calcium resistance, pollution resistance, high temperature resistance, favorable compatibility, no need of adding defoaming agent and the like; and the drag reduction efficiency can reach 70% when the drag reducer is used in fracturing. The drag reducer solves the problems of high tendency to granulation and low tendency to hydration in the use process of the existing drag reducer using dry powder, and the problem that the poor compatibility among various different ions and chemical assistants in the fracturing fluid can directly influence the feasibility and effectiveness of the slickwater fracturing.

The invention relates to the technical field of new environment-friendly materials, in particular to a preparation method of an anti-pollution and super-hydrophilic oil-water separation mesh. The preparation method comprises the following steps: adding graphite oxide into an organic solvent to obtain a graphene oxide solution; adding a film-forming material into the graphene oxide solution, and evenly stirring; then, adding a crosslinking agent and a surface active agent, and heating to obtain a polymer solution; soaking a stainless steel mesh into the polymer solution, and drying the soaked stainless steel mesh by heating so as to obtain the anti-pollution and super-hydrophilic oil-water separation mesh. The anti-pollution and super-hydrophilic oil-water separation mesh prepared by the invention has the characteristics of being anti-pollution, high in mechanical strength, obvious in dynamic oil-water separation effect, low in preparation cost, and the like, and has good commercial prospect in the technical field of special infiltration interfaces.

The invention discloses a fluorescent quantitative PCR (polymerase chain reaction) method, primer and kit for detecting the EBOV (Ebola virus). The general method can be used for detecting that the sample to be detected is positive as long as the sample contains one or more of the five types of subtype EBOVs which are Z, S, B, C and R at the same time. The method overcomes the defects of the conventional PCR method for detecting by adopting the advantages of high-efficiency nucleic acid amplification of the PCR technology and the sensitivity of the fluorescence-dye SYBR Green I and the computer-aided fluorescent technology for detecting and improves the detection sensitivity, specificity and operation convenience greatly. In addition, the positive control adopted by the method is a section of RNA molecules transcribed in vitro of a NP gene, and the method is safer than the method for detecting by taking the inactivated virus solution as the positive control. The RNA molecules transcribed in vitro can be prepared in quantity, and the sources of the positive control are stable and reliable.

The invention discloses a high-temperature resistant clay stabilizer and a preparation method thereof. The preparation method comprises the following steps: carrying out initiation reaction on epoxy chloropropane, dimethylamine and unsaturated quaternary ammonium salt with a sulfonate-containing anionic monomer under a certain condition; and then adding a chain transfer agent in the reaction process to control the molecular weight and after reaction, obtaining the clay stabilizer, wherein both the main and side chains contain cations and the side chain further contains anions. The clay stabilizer has the abilities of resisting temperature, preventing salt and resisting pollution; the clay stabilizer is small in use level, scouring resistant and good in anti-swelling effect; and the molecular weight is ranged from 1500 to 6000, so that the high-temperature resistant clay stabilizer is suitable for a low permeability reservoir.

The invention relates to a hollow fiber forward osmosis membrane. The hollow fiber forward osmosis membrane comprises a supporting pipe and a forward osmosis separation layer, wherein the forward osmosis separation layer is arranged in the direction of the external periphery of the supporting pipe, and the supporting pipe is formed by weaving inorganic or organic polymer materials. The invention further relates to a preparing method of the hollow fiber forward osmosis membrane. The preparing method comprises the steps of S1, immersing the supporting pipe in an aqueous-phase monometer solution, taking the supporting pipe out, and then sucking the surface layer dry; S2, immersing the supporting pipe in an organic-phase monomer solution, taking the supporting pipe out, sucking the outer surface dry, and then conducting heat treatment; S3, washing the supporting pipe subjected to heat treatment with deionized water so that the inner supporting pipe hollow fiber forward osmosis membrane can be obtained. The hollow fiber forward osmosis membrane and the preparing method thereof have the advantages that the hollow fiber forward osmosis membrane is high in mechanical property, water permeability and pollution resistance, and according to the preparing method, technology is simple, preparing cost is low, and preparing process is easy to control.

The invention discloses a hydrophilic-oleophobic material, and a preparation method and an application thereof. The hydrophilic-oleophobic material comprises a hydrophilic porous material used as a matrix, and the matrix is grafted with hydrophilic-oleophobic molecules. Hydrophilic groups contained in the hydrophilic porous material and polar groups contained in the hydrophilic-oleophobic molecules undergo a bonding reaction to make the matrix be grafted with the hydrophilic-oleophobic molecules. The hydrophilic-oleophobic material has hydrophilic and oleophobic properties in air, has underwater super oleophobic property, can effectively treat stable emulsified oil sewage, and has the advantages of self cleaning, pollution resistance and long life, so the hydrophilic-oleophobic material is a good oil-water separation material, and has wide application prospect in the field of oil-water separation and filtration treatment of organic sewage generated in the industry and life. The preparation method of the hydrophilic-oleophobic material has the advantages of simplicity, cheap and renewable raw materials, and commercial promotion facilitation.

The invention relates to the technical field of thermal-insulation films and particularly relates to a double-layer polyester film and a preparation method thereof. By forming a self-cleaning auxiliary wear-resistant layer on the upper surface of a first substrate layer, the wear resistance of the film is ensured, the film has hydrophobic, oleophobic, anti-frost, anti-fog, pollution-resistant, antibacterial and self-cleaning functions and the transmittance of the film can also be increased; the self-cleaning auxiliary wear-resistant layer is prepared by curing specific component in a specific proportion, the double-layer polyester film is strong in self-cleaning capability, and the contact angle is 140 degrees-158 degrees. A UV-resistant and infrared-resistant thermal-insulation layer is formed between the first substrate layer and the second substrate layer, is prepared by curing specific component in a specific proportion and can well shield ultraviolet and 800-2500nm infrared light; hollow glass microspheres are added so that the thickness of the coating can be precisely controlled and since the hollow glass microspheres have the characteristics of being hollow, light in weight and low in thermal conductivity, the purposes that the heat transfer coefficient is reduced and the thermal-insulation performance of the film is enhanced are achieved.

The invention relates to a novel steel bar rust resistant agent, and belongs to the technical field of building materials. The steel bar rust resistant agent is characterized by comprising the following raw materials in percentage by weight: 10 to 20 percent of alkamine (ethanolamine and one of N-methyl ethanolamine, triethanolamine, p-hydroxy cyclohexylamine), 5 to 15 percent of ammonium benzoate, 10 to 15 percent of nanometer methyl potassium silicate, 1 to 5 percent of citric acid and the balance of water. A method for preparing the steel bar rust resistant agent comprises the following steps of: weighing the raw materials according to a formula, and mixing and stirring uniformly to obtain the novel steel bar rust resistant agent. The rust resistant agent with a rust resistant function and the nanometer methyl potassium silicate combine and are sprayed on the surface of steel bars directly on a steel bar production line to produce an anticorrosive oxidation film at high temperature, so the effective utilization rate of the rust resistant agent is improved, and a rust-resistant function is achieved while the performance of concrete is not influenced. Therefore, the steel bar rust resistant agent retards and blocks the corrosion of the steel bars in the reinforced concrete effectively and has the characteristics of environment friendliness, high adsorptive force and high corrosion resistance.

The invention relates to a fluorescence quantitative PCR (Polymerase Chain Reaction) diagnostic kit for rapid detection of mRNA expression level of a BRCA1 gene. The kit comprises BRCA1gene primer, a reference gene GAPDH primer and a Taqman fluorescence probe. The BRCA1 is an important cancer suppressor gene, and proteins coded by the BRCA1 gene play an important role in DNA damage and repair. A fluorescence quantitative PCR with high sensitivity and specificity is employed to detect the mRNA expression level of BRCA1; and a detection result has substantially increased specificity and sensitivity. The kit provides a novel rapid simple gene diagnostic technique for whether a clinical malignant tumor patient should use platinum chemotherapeutics and antimicrotubular medicaments.

The invention relates to a low-temperature pressurization head space sample injection device for measuring volatile substances in the atmosphere through a GC-MS (gas chromatography-mass spectrometer) technology. The low-temperature pressurization head space sample injection device comprises a reciprocating full-glass piston pump which consists of a glass piston cylinder barrel (1), a unidirectional valve a (2), a unidirectional valve b (3), a clamp (4), a crank-link mechanism (5), a micro motor (6) and a worm speed reducer (7), a sampling head space bottle which comprises a head space bottle body (10) and cooling equipment, wherein a seal is arranged at the head space bottle; two injection needle heads with different lengths are inserted into the seal; the long needle head is in contact with the bottom to serve as a gas inlet needle (8); the short needle head is positioned at a bottleneck to serve as a gas exhaust needle (9); the gas inlet needle (8) is connected with the unidirectional valve b (3); the gas exhaust needle (9) is connected to a GC-MS; the head space bottle body (10) is arranged in the cooling equipment (12). Compared with the prior art, the low-temperature pressurization head space sample injection device has the advantages that the efficiency of collecting the volatile components in the atmosphere can be improved, so that the volatile components in the atmosphere can be fully collected and can be subjected to quantitative and qualitative compound analysis in the GC-MS.

The invention discloses a mask capable of detecting novel coronavirus pneumonia pathogens and a using method. The mask comprises ear hooks, a mask body and a breathing valve on the mask body; a detection chip is arranged in a breathing air passage of the breathing valve; a detection display module is arranged on the outer surface of the mask body; the detection chip is provided with a sample collection and reaction area; the sample collection and reaction area is coupled with a gold microwire electrode; the gold microwire electrode is connected with an antibody capable of capturing pathogens so as to form a working electrode; a reference electrode and a counter electrode are also arranged; the working electrode, the reference electrode and the counter electrode jointly form an electrode ofthe detection chip; the electrode, a current amplification circuit of the detection display module and the control function module are connected in sequence, and the control function module is connected with an indicating lamp and / or a digital display screen; the detection display module comprises a current amplification circuit, a control function module and an indicating lamp and / or a digital display screen. The method is suitable for sampling and detection of large-scale screening of new crowds suspected of novel coronavirus in a short time.

The invention discloses a shot peening strengthening device for a high-speed train wheel. The shot peening strengthening device comprises a shot-blast room, three shot blasters, a shot separation and recovery device, a shot storage and supply device, a dust removal device, a rotary worktable and a clamp, wherein the rotary worktable is positioned on one side of the shot-blast room and provided with two clamp worktables symmetrically arranged along the diameter; each clamp worktable can be equipped with six train wheel workpieces and rotates in a shot-blast process for strengthening the train wheel surface to be uniform; the rotary worktable can intermittently rotate and rotate 180 degrees each time; the three shot blasters are connected with six blast guns, and each blast gun corresponds to one train wheel workpiece; the shot separation and recovery device comprises a shot lifting machine and a shot separator, and is used for lifting and separating shots; the dust removal device is a dust remover, and the air suction hole of the dust removal device is connected with the shot separator and an air suction hole in the top end of the shot-blast room to guarantee indoor visibility and keep a certain negative pressure in the room. A shot-blast machine is high in processing efficiency and reliable in working.

The invention discloses elastic non-woven cloth with high water absorption and air permeability for medical magnetic therapy. The elastic non-woven cloth is made from, by weight, 20-27 parts of modified polylactic acid fiber, 20-33 parts of modified bamboo fiber, 10-20 parts of hydroxymethyl cellulose, 2-5 parts of casein, 20-30 parts of soybean fiber, 5-10 parts of sodium alginate, 20-35 parts ofstarch, 20-23 parts of magnetic starch, 40-45 parts of modified polyacrylamide fiber and 3-5 parts of a plant extract. The non-woven cloth has bacteriostatic activity, can effectively prevent wound infection, and is suitable for extensive symptoms, remarkable in health effect, safe and reliable in magnetic therapy function and economical and practical; raw materials adopted are biodegradable natural polymer materials and have good biocompatibility, and simpleness in the method is achieved.

The invention relates to a novel seawater desalination reverse osmosis membrane and a preparation method thereof. The seawater desalination membrane with novel structure and novel function is preparedby carrying out an interfacial polymerization reaction on m-phenylenediamine, o-phenylenediamine and p-phenylenediamine monomers with substituent groups, and a trimesoyl chloride monomer; and the novel seawater desalination reverse osmosis membrane has various functions of chlorine resistance, pollution resistance, solvent resistance and the like and is used for various fields of efficient seawater desalination, brackish water desalination, hard water softening and the like.

The invention relates to an automobile windscreen cleaning agent and belongs to the technical field of cleaning agents. The windscreen cleaning agent is prepared by using the following raw materials in percentage by weight: 0.01 to 2 percent of nonionic surfactant, 0.1 to 1 percent of corrosion inhibitor, 0.1 to 5 percent of waterborne silicone oil, 3 to 35 percent of absolute ethyl alcohol, 0 to 0.001 percent of dye and balance of water, wherein the nonionic surfactant is polyether and / or low-foam fatty alcohol-polyoxyethylene ether; the corrosion inhibitor is more than one of benzotriazole, sodium benzoate, triethanolamine, ethylene diamine tetraacetic acid and borax; the waterborne silicone oil is more than one of polyether modified siloxane; the dye is direct fast blue. The windscreen cleaning agent is extremely low in corrosiveness, is high in use safety, can prevent dirt such as tree gum, bird feces and lac from being dried and hardened on the surface of an automobile windscreen to form stubborn stains, and any stain on the automobile windscreen can be easily and quickly removed; the service life of windscreen wipers is also prolonged and the windscreen is prevented from being scratched.

Provided is a novel comfortable elastic fabric and a producing process thereof. The warp yarn of the fabric is made of LY / CJ of 11.7*2 tex at the blending ratio of 50 / 50, and the weft yarn of the fabric is made of STS / C of 36.7 tex at the blending ratio of 60 / 40; the density of the warp yarn of the fabric is 425 strands / 10cm, the density of the weft yarn of the fabric is 291 strands / 10cm, and the width is 175.5cm; the fabric is woven through 3 / 1 +1 / 3 and 2 / 2 +1 / 1 +1 / 1 derivative weave. Special technology is used in the processes such as sizing, weaving, dyeing and finishing in the producing process. The novel comfortable elastic fabric and the producing process thereof have the advantages that the fabric is easy to care, washable in a machine, stain resistant, soft in hand feeling and fluffy due to the innovative use of the novel comfortable elastic fabric, thereby meeting market demand and popular trend; the fabric is moderate in elasticity, comfortable to wear, and has the elasticity better than that of ordinary PTT products and the drawing recovery effect better than that of a spandex core elastic fabric.

The invention relates to a photocatalytic compound exhaust gas treatment system. An exhaust gas collecting cover is connected with a spray tower, the rear part of the spray tower is connected with a photolysis oxidization catalysis device, and the rear part of the photolysis oxidization catalysis device is connected with an air inducing device; a first filter screen is arranged between the photolysis oxidization catalysis device and the spray tower to realize filtration, and a second filter screen is arranged between the photolysis oxidization catalysis device and the air inducing device to realize filtration; and a plurality of TiO2 filter screens and a plurality of UVC tubes and ozone generators are arranged in the photolysis oxidization catalysis device at intervals. A spraying technology is used to cool exhaust gas and remove one part of dusts in the exhaust gas, so primary purification and maintenance of cleanness of the UVC tubes are realized; a catalyst is arranged, so the photolysis oxidization efficiency is greatly improved under the catalysis of the catalyst; and high temperature exhaust gas or exhaust gas with complex components is cooled and washed, enters the photolysis oxidization device and undergoes secondary treatment, so disadvantages of single technologies are overcome.

The invention discloses a preparation method of light media for dendrobium officinale. The preparation method is characterized in that the light media are prepared from bark and wood chips in the ratio being 3:1 through mixing and stirring. The light media are pure natural soilless materials having rich plant fiber, humus, light mineral substances and the like, have functions of loosening, ventilation, water and fertilizer retention, high buffer capability, capability of improving stress resistance of the dendrobium officinale and can create good conditions for growth and development of the dendrobium officinale.