94results about How to "No secondary environmental pollution" patented technology

The invention provides a dry-method air-separation strong permanent magnetic separator, belongs to the technical field of dressing equipment, and is particularly suitable for regenerating an ion-containing fly ash resource produced in a smelting process for making ion and steel. The dry-method air-separation strong permanent magnetic separator comprises a machine body and a magnetic roller arranged in the machine body, wherein the machine body is provided with a feeding hole, a discharge hole and an exhaust and air discharge hole; the magnetic roller comprises a fixedly arranged roller core and a roller sheet which surrounds the roller core and can rotate around the roller core; the internal space formed by the machine body and a semi-circumferential surface, provided with a magnetic area, of the roller core is divided into a material distribution area, a separation area and a blanking area by baffle plates from top down, and the material distribution area, the separation area and the blanking are mutually communicated; the machine body is provided with a nozzle device spraying air flow toward the separation area, the nozzle device is at least provided with a nozzle, and the tail end of the nozzle device is provided with an air inlet; and the roller core is divided into the magnetic area and a nonmagnetic area, and the magnetic area and the material distribution area and the separation area are arranged correspondingly. The separator overcomes the drawback that the prior art is incapable of directly and effectively separating fine weak magnetic ferric oxide mineral powder, and is low in energy consumption, low in productive operation cost, high in sorting purity, simple and reasonable in structure, and convenient in operation. In the separation process, the inside of the machine body is constantly kept in a negative pressure state so as to avoid dust overflow and secondary environmental pollution.

The invention discloses a biological composite water treatment agent and a preparation method and application thereof. The biological composite water treatment agent consists of 30-40 parts by weightof a compound A agent and 60-70 parts by weight of a compound B agent. First of all, the agent A and agent B are prepared, then the agent A and agent B are mixed evenly and subjected to ultrasonic treatment and low-temperature polymerization reaction to obtain the biological composite water treatment agent, which is applied to sewage treatment, and the treated water quality reaches the sanitary standard of domestic drinking water. The agent A and agent B are not only independent compound water treatment agents, but also raw materials for preparing the biological compound water treatment agents, and can be used singly, jointly or made into the biological compound water treatment agents for sewage treatment. The application method of the biological composite water treatment agent is simple and convenient, the application link does not depend on complicated facilities and equipment for water treatment, and compared with the investment of the current conventional water treatment facilitiesand the dosage of the medicament, the investment of the water treatment equipment can be reduced by more than 80%, the dosage of the sewage treatment medicament can be reduced by 30-50%, and the biological composite water treatment agent is economical, environment-friendly and green and efficient.

The invention relates to a compound inoculant for improvement of saline-alkali soil and particularly provides a novel compound inoculant for improvement of saline-alkali soil, and preparation and applications of same. Bacillus amyloliquefaciens, bacillus megatherium, bacillus mucilaginosus and paenibacillus azotofixans are fermented respectively to obtain fermentation liquids, which are then mixed with a carrier respectively according to certain volume-weight ratio (V / kg); the mixtures are dried at low temperature and finally are compounded according to ratio. The compound inoculant is a powder agent, wherein the microorganisms therein are functional bacteria, and the inoculant is high in living bacteria number and especially contains high-activity metabolic products, so that the compound inoculant is suitable for being mixed with a base fertilizer, especially high-quality farmyard manure, for use. When being applied in soil, high environment adaption capability and high reproduction speed are achieved. The compound inoculant can increase beneficial microbial flora in rhizosphere and rapidly decompose organic substances for absorption and utilization by plants, can reduce the alkalinity of soil, improve fertility of soil and improve the water permeability and retention and breathability properties of the soil, and can accelerate growth of root system and prevent spreading of soil-borne diseases, thereby maintaining ecological balance, reducing cost and improving the saline-alkali soil.

The invention relates to a machine-made sand light-expansion high early strength grouting material and a preparation method thereof. The grouting material comprises the following ingredients: 40-55 wt% of machine-made sand, 40-55 wt% of ordinary portland cement, 1-5 wt% of expansion and shrinkage-reducing components, and 1-5 wt% of reinforcing component, wherein, the expansion and shrinkage-reducing component comprises high-alumina cement and anhydrite according to the weight ratio of 0.5 to 1.5 : 1, and the reinforcing component comprises polycarboxylic acid water reducer powder and siliceous dust according to the weight ratio of 0.05 to 0.15 : 1. The grouting material is prepared by carrying out two stage dry mix on the ingredients. According to the invention, the problem of difficult use of machine-made sand with large amount in the grouting material production is solved; the product has the advantages of high early strength, light expansion, no shrinkage and the like; and the preparation method has the advantages of simple process, low cost, and no secondary pollution. The invention can be widely applied for anchoring foundation bolt, embedding steel bar secondary grouting of device, reinforcing the beams, plates, columns and floors of buildings and the like, having a wide application range.

The invention discloses a method for producing a microbial flocculant by utilizing culture waste water and residual activated sludge. The method comprises the steps of: first implanting bacterial strains into a seed culture medium to culture a seed liquid; second, adding cane sugar (as a supplemented carbon source) and phosphate (for adjusting pH) in the culture wastewater to prepare a culture wastewater fermentation medium, and mixing the culture wastewater with pretreated residual activated sludge in a volume ratio of 1:5-1:8 to prepare a culture wastewater-residual activated sludge fermentation medium; and at last, inoculating a 1-2% seed liquid to the fermentation medium, and using a two-step fermentation technology for fermentation production of flocculant, thereby producing the microbial flocculant. The method of the invention utilizes culture wastewater rich in N, P and K and residual activated sludge rich in organic matters to produce microbial flocculant, so as to greatly reduce the production cost and realize comprehensive utilization of waste. The production method is simple and easy, and the produced microbial flocculant has high flocculation performance.

Belonging to the field of nano-material synthesis, the invention discloses a preparation method of a nano-zinc oxide cellulose sponge material. The method includes: adopting hemp stem fiber as the raw material, using a NaOH solution to swell the fiber, then using saturated steam pressurization to split cellulose into smaller fibers, then reacting N, N'-carbonyldiimidazole with cellulose to generate high activity cellulose, adding a KH-550 silane coupling agent to graft nano-zinc oxide to a high activity cellulose surface, then using absorbent cotton as the reinforcing fiber, taking sodium sulfate as the pore-forming agent, and using a NaOH / thiourea solution as the solvent, and carrying out die molding to prepare a nano-zinc oxide cellulose sponge material under low temperature and dry conditions. The obtained nano-zinc oxide cellulose sponge material has a sponge porous structure, the cellulose composing the sponge structure is easily degradable and does not cause secondary pollution, also the complex nano-zinc oxide bulge structure on the surface can realize reversible conversion of surface super-hydrophobicity and super-hydrophilicity, thus realizing adsorption and removal of oil.

The invention discloses a super-hydrophobic Ti-containing nanometer mordenite molecular sieve preparation method. The method includes the steps of first synthesizing of a nanometer mordenite molecular sieve multi-mesoporous structure as a precursor, then implanting a Ti reactivity center in a zeolite framework through a transition metal supplement method after combined with a deep dealumination and gas-solid isomorphous replacement method, and finally treating after surface modification with an organic silylating agent to prepare a super-hydrophobic Ti-containing nanometer mordenite molecular sieve. The super-hydrophobic Ti-containing nanometer mordenite molecular sieve preparation method has the significant advantages of using the organic silylating agent of higher hydrophobicity to replace traditional inorganic silicon fluoride acid greatly damaging the framework as a regulating agent for protecting the microporous structure of the zeolite molecular sieve and avoiding producing any secondary environmental pollution in the synthesis process. In addition, the capacity of the metal atom Ti in the zeolite molecular sieve framework can be effectively regulated by adjusting the silica to alumina ratio of a synthesis system and the variety and temperature of the precursor of the gas-solid isomorphous replacement.

The present invention relates to an internal lining paper for environment-protecting cigarette. It is made up by coating water printing ink on the surface of raw paper. The smoothness of raw paper is greater than on equal to 1000S, unit area paper weight is 60-80g / sq.m, water content is less than 35g / sq.m, thickness is 0.05-0.07 mm and the dose of water printing ink (by solid content) is 4-7g / sq.m. The procedures for coating printing ink are successively as follows: placing paper, leveling, tensioning, coating, drying, calendaring and rolling up.

The invention relates to a recycling method of a samarium cobalt magnetic waste material. The method is characterized by comprising the steps of: a, leaching a samarium cobalt waste material with dilute hydrochloric acid, and after the complete reaction, filtering to remove substances insoluble in acid; b, regulating pH of a leaching solution, precipitating rare earth elements in the solution with oxalic acid to generate a grey and white oxalate precipitate, filtering, drying and calcining the precipitate to obtain solid samarium oxide; c, precipitating samarium, oxidizing Fe<2+> into Fe<3+> in a filtrate by an oxidant, regulating the pH value to precipitate iron in the solution before cobalt, and filtering; and d, removing iron, adjusting the pH value of filtrate, adding oxalic acid to obtain a cobalt oxalate precipitate, and conducting filtration, drying and calcination to obtain cobalt oxide. The method has the following advantages: hydrochloric acid optimal solution, oxalic acid precipitation, iron removal by oxidation and calcination method are employed according to the chemical properties of the elements contained in the waste material, so as to successfully extract valuable elements in the samarium cobalt in waste material; the recycling process is simple in process and low in production cost and the does not produce secondary pollution of the environment; and the prepared samarium oxide and cobalt oxide products have high extraction rate.

The slow releasing fertilizer specially for Chinese goldthread is prepared with rape seed cake 16-20 wt%, bone meal 8-14 wt%, turf 14-20 wt%, zeolite 8-12 wt%, borax 2-5 wt%, urea 14-20 wt%, ammonium phosphate 10-15 wt%, potassium sulfate 13-18 wt%, magnesium sulfate 1-2 wt% and zinc sulfate 0.5-1.5 wt%. The preparation process includes mixing, pelletizing and other steps. The fertilizer is prepared with natural organic material as main components and can meet the requirement for Chinese goldthread to grow is rhizome and improve soil structure.

The present invention discloses a bagasse composite soil conditioner preparation method, wherein the main byproduct bagasse of sugar production from sugarcane is adopted as a raw material, and is combined with starch and kaolin through a graft copolymerization method so as to prepare the soil conditioner having high heavy metal adsorption capacity, wherein the bagasse contains a lot of cellulose, such that the application of the bagasse to prepare the soil repair agent has economic values and significant environmental significance. According to the present invention, the main byproduct bagasse of the sugar production industry and the natural products such as starch and kaolin are adopted as the raw materials, the characteristics of reasonable process route and reliable product performance are provided, the prepared composite material has the high heavy metal adsorption and the high soil repair capability, the method has advantages of increase of the comprehensive utilization of the sugar mill byproduct, no secondary pollution and the like, and the soil repair agent prepared by using the method can effectively absorb heavy metals in the soil, wherein the cadmium adsorption rate achieves more than 45%, and the copper adsorption rate achieves more than 52%.

The invention relates to a method for synchronously reclaiming orthophosphorous acid and glyphosate in glyphosate production wastewater by a chemical precipitation method, which comprises the following steps: (1) adjusting the pH value of the glyphosate production wastewater by using hydrochloric acid; (2) adding CaCl2 solution into the wastewater to form calcium glyphosate and calcium phosphate filter cakes; (3) adding water into the filter cakes to blend the mixture, adding a certain amount of Na2CO3 into the blending solution, and generating CaCO3 precipitate after stirring reaction; and (4) filtering and separating the precipitated CaCO3, concentrating the filtered filtrate twice and removing NaCl to obtain concentrated solution of the glyphosate and the orthophosphorous acid, wherein the concentration of the glyphosate is 84.72 grams per liter; and the concentration of the orthophosphorous acid is 251.40 grams per liter. The total reclaiming rates of the glyphosate and the orthophosphorous acid are 88 percent and 89 percent respectively. The reclaiming treatment method of the invention can synchronously reclaim the glyphosate and the orthophosphorous acid in the wastewater to obtain the concentrated solution of the glyphosate and the orthophosphorous acid. The total reclaiming rates of the glyphosate and the orthophosphorous acid are 88 percent and 89 percent respectively.

The invention discloses an environmentally friendly efficient silt remover and a construction method thereof. The environmentally friendly efficient silt remover comprises a silt transportation device, wherein the silt transportation device comprises a traveling trolley body; the traveling trolley body is provided with a box; a silt shoveling mechanism is arranged at the front end of the box; two spiral conveyors are arranged between the silt shoveling mechanism and the traveling trolley body; silt is fed into a sorting mechanism in the box so as to sort the silt and sundries, qualified silt which is sorted by the sorting mechanism is discharged via a collecting tube and a discharging tube, and the large sundries are discharged by an outlet of a sorting barrel. In a silt removing process, the environmentally friendly efficient silt remover has the characteristics of convenience in operation, convenient in cleaning, efficient construction and labor saving. Meanwhile, silt is sorted directly by the sorting mechanism, secondary environment pollution is avoided, and the environmentally friendly efficient silt remover is environmentally friendly.

The present invention relates to chemical technology, and is especially process of preparing calcium propionate and calcium lactate with oyster shell as calcium source. Oyster shell after being washed, stoved and crushed is made to react chemically with propionic acid and lactic acid to produce calcium propionate and calcium lactate. The preparation process has chemical reaction at 20-60 deg.c for 2-4.5 hr without high temperature calcining and without adding other chemical matter, and has no destroy to amino acid, unsaturated fatty acid, inorganic matter, trace elements and other beneficial matter. The present invention can eliminate environmental pollution caused by oyster shell and has no secondary pollution.

The invention provides an endoplasmic slow release composite fertilizer and its preparation method. According to the invention, a nanometer plant nutrition functional blended polymer is used in a high tower melting granulation process; flow deflecting mixing technology and high efficiency emulsification technology are employed to promote binding between a nanometer slow release agent and N, P and K fertilizer molecules and wrapping action of ultrafine particles; meanwhile, a compound formed by binding of the nanometer slow release agent and the N, P and K fertilizer molecules undergoes a complexation reaction with accessories of the composite fertilizer materials so as to form flowable slurry with a uniform compact anchor type network frame structure system, and the flowable slurry is subjected to spraying granulation by the high tower so as to prepare endoplasmic slow release composite fertilizer granules. The method provided by the invention overcomes the technical bottleneck problems of high additional cost of a slow release material, difficult degradation in nature, poor affinity and incapability of continuous mass production in conventional slow release composite fertilizers; the prepared endoplasmic slow release composite fertilizer can meet needs for release of fertilizer nutrients in different periods of time, improves the utilization rate of the fertilizer and reduces application and loss of chemical fertilizers and non-point source pollution to soil.

The invention discloses a cleaning agent for treating polymer-containing oil sludge and a treatment method thereof. The cleaning agent is prepared by mixing 0.1-5% of a biological enzyme, 0.1-20% of a polymer digester, 1-5% of a low-density nano material, 1-10% of an alkali, 0.01-2% of an auxiliary agent and water according to the mass ratio. The treatment method comprises the following steps of: (1) putting a certain volume of oil sludge into a stirring and mixing device according to a mud-water ratio set by the water content of the oil sludge; after the biological enzyme, the polymer digester and the low-density nano material are prepared into the cleaning agent, pumping the cleaning agent to the stirring and mixing device; (2) pumping the cleaning agent into the stirring device, and heating the system; (3) starting a stirring and circulating system for stirring, mixing and flushing; (4) allowing flushing liquid to enter an oil-gas-water separation device for oil-gas-water separation, allowing separated oil to enter a collection and transportation system, performing evacuation after escaping gas reaches the standard, allowing the separated cleaning agent to enter a biological nano bubble generation device for recycling; and (5) allowing clean sediment to enter a sediment collection system, or directly discharging after pressure filtration and air drying of the clean sediment.

The invention discloses a remediation agent for remediating aged petroleum contaminated soil. The remediation agent is prepared from the following components: a compound surfactant microemulsion, rhamnolipid, persulfate and quick lime. A using method of the agent comprises the step of preparing the use amounts of the components according to the pollution degree of soil, wherein the use amounts of the components are respectively a light pollution use amount, a moderate pollution use amount and a severe pollution use amount. The remediation agent is green and environmentally-friendly, and all the components are common agents in environmental protection and restoration engineering and are easy to obtain; pollutants are finally decomposed into CO2, H2O and other non-toxic substances, so the removal rate of target pollutants is high, and secondary pollution to the environment is avoided; and a remediation method is easy and convenient to operate, short in repairing time, low in cost, high in safety and capable of achieving engineering application.

The invention relates to a harmless disposal method of waste incineration fly ash. The method comprises the steps that the waste incineration fly ash is added into molten-state sodium chloride to react, and fly ash molten salt residues and volatile gas are generated in the reaction process; the fly ash molten salt residues generated in the reaction process are sedimentated to the bottom of the molten-state sodium chloride from the molten-state sodium chloride, and the fly ash molten salt residues at the bottom are collected and then subjected to landfilling; heavy metal in the volatile gas generated in the reaction process is collected through condensation, and the rest of gas is discharged; and a molten salt auxiliary is added into the waste incineration fly ash. The disposal method is simple in process, the size of fly ash is reduced by 50%, the weight of the fly ash molten salt residues is reduced by 50%, and the volume reduction rate of the size and weight is remarkable.

The invention discloses a waste incineration fly ash resource method based on a magnesium potassium phosphate adhesive. The method comprises the following steps: taking 30-50 parts by weight of dead-burnt magnesia powder and 20-30 parts by weight of monopotassium phosphate and doping 6-12 parts by weight of a composite retarder composed of sodium tetraborate, sodium phosphate dibasic dodecahydrate and inorganic chlorine salt so as to prepare the magnesium potassium phosphate adhesive (MKPC); taking 10-40 parts by weight of waste incineration fly ash and 50-80 parts by weight of MKPC and doping 10-20 parts by weight of water, mixing and uniformly stirring to obtain MKPC-based material slurry; and carrying out pouring or extrusion molding on the MKPC-based material slurry, and maintaining in the natural air environment so as to obtain an MKPC-based material product. By coating waste incineration fly ash with the MKPC, no preprocessor is required for processing fly ash. The preparation technology is simple, and solidification is carried out at normal temperature. Leaching concentration of heavy metal in a solidified body is low, and secondary pollution will not be caused. In addition, compressive strength also meets building requirements.

The invention discloses a method for stimulating indigenous flora to quickly degrade cypermethrin in soil, and the method comprises the following steps: selecting living adult earthworms domesticated in clean soil, cleaning the living adult earthworms, and placing the living adult earthworms in a dark box for gut purging; putting the earthworms subjected to intestine cleaning treatment into cypermethrin polluted soil with the preparation concentration of 0.5-20 mg / kg, and performing domesticating for 20 days; taking out the cultured earthworms, performing cleaning, dissecting intestinal tracts, removing contents in the intestinal tracts, and scraping intestinal wall flora; according to the mass ratio of the put earthworm intestinal flora to the soil being 1: 2000-1: 8000, adding the earthworm intestinal flora into the soil to be remediated, and performing remediation for 7-60 days. Under the stress of cypermethrin, the targeted flora domesticated by an earthworm intestinal reactor is rich in cypermethrin pesticide degrading microorganisms, and when the targeted flora is added into the cypermethrin polluted soil, the indigenous flora is promoted to quickly degrade the cypermethrin, the degradation rate can reach 96.1%, and the ecological environment safety of the soil is further maintained.

The invention discloses a preparation method of an Nd-MOFs gas adsorption material. The preparation method comprises ligand AGE synthesis and material synthesis, and comprises the following specific steps: adding a ligand solution and a neodymium chloride solution into a conical bottle respectively, mixing uniformly, adding N,N-diisopropylethylamine (DIEA) dropwise under a magnetic stirring condition to regulate the pH of the solution to 7 to 8, and stirring for reacting at a room temperature; then performing suction filtration with a vacuum pump, washing the obtained solid with acetone for 2to 5 times, and washing with distilled water for 2 to 4 times; then placing the solid into a drying oven for drying until constant weight to obtain the Nd-MOFs gas adsorption material. The Nd-MOFs gasadsorption material prepared by the method solves the problems of change of multiple factors, degradation in the montmorillonite adsorption performance and the like due to easy desorption of activated carbon under a high temperature environment, incapability of applying a zeolite molecular sieve to adsorption under strong inorganic acid and strong alkali conditions, and the need of strictly controlling the pH value of the solution in the process of chemical modification on the surface of montmorillonite, and has an excellent adsorption effect.

The invention discloses a method for preparing an aluminum-iron flocculant by red mud. According to the method, red mud is firstly washed to obtain washing liquid and a washing residue, the washing residue is mixed and stirred with a mixed leaching solvent of citric acid, tannic acid and malic acid at a mass ratio of 1: 3-7, a reaction temperature of 80-100 DEG C and a stirring intensity of 250-400r / min for 30-90min, after the end of the stirring, solid-liquid separation is carried out to obtain a titanium-rich material and acid leaching solution, the washing liquid is utilized to adjust the pH value of the acid leaching liquid to 7-9, a mixed polymeric medicament of triglycollamic acid and phytic acid in a liquid-solid mass ratio of 5-10: 1 is added for stirring and dissolution, after thestirring is completed, the mixture is aged at 50-80 DEG C for 5 to 10 hours, standing and ageing are carried out at room temperature for 24 to 48 hours, the aged upper liquid is discharged to obtaina milky polymeric aluminum-iron flocculant, and finally drying is carried out at 100-110 DEG C for 8 to 16 hours to obtain the aluminum-iron flocculant product with less than 0.2% of water-soluble impurities.

The invention belongs to the technical field of vanadium hydrometallurgy and ionic liquid extraction, and particularly relates to a method for extracting vanadium from an acidic solution by using an ionic liquid [OMIM]BF4. According to the present invention, an oxidant is added into a vanadium-containing solution obtained from the vanadium extraction process of a vanadium-containing mineral to make the low-valent vanadium be oxidized into the pentavalent vanadium so as to obtain a vanadium-containing acidic solution, the vanadium-containing acidic solution and an ionic liquid are mixed, liquid-liquid extraction is performed, the mixing solution obtained after the completion of the extraction is subjected to centrifugal separation to obtain a vanadium-bearing organic phase and a raffinate, the vanadium-bearing organic phase is subjected to back extraction with a back extraction agent, and the mixed solution obtained after the completion of the back extraction is subjected to centrifugal separation to obtain the pure vanadium solution and the recovered ionic liquid; and the method has characteristics of high extraction efficiency, short equilibrium time, rapid layering after extraction, no emulsification phenomenon, and simple operation, wherein the ionic liquid is hydrophobic and is substantially immiscible with water so as to reduce the organic phase loss due to the water phase entrainment or dissolution.

The invention discloses a metal organic friction repair agent and a preparation method thereof. The preparation method particularly comprises the following steps: adding isocaprylic acid and dimethyl benzene to a reaction kettle; uniformly stirring, then adding copper hydroxide, trihydroxy molybdenum and cerium hydroxide, continuously stirring, adding octyl butyl diphenylamine, heating to 70-150 DEG C for inert-gas protection reaction; and finally adding polyisobutylene succinimide, carrying out reduced pressure distillation, and recovering a solvent. The metal organic friction repair agent obtained through the preparation method disclosed by the invention has good oil solubility in various oil products, does not contain the elements, such as sulfur, phosphorus and halogen which are harmful to the environment, has good repair effect on abrasion marks, can be widely applied to repairing the abrasive surfaces in the fields of compressors, air cylinders, gears, precision machine tools, aerospace and the like and can prolong the service life of rotating equipment, reduce the equipment cost and achieve the purposes of electricity conservation and oil conservation.

The invention provides a plant type composite efficient corrosion inhibitor. The plant type composite efficient corrosion inhibitor is prepared from the following raw materials in percentage by mass: 12 to 66.0 percent of plants, 5.0 to 16.0 percent of sodium molybdate, 1.5 to 12 percent of sodium gluconate, 3.5 to 25 percent of sodium tartrate, 0 to 23 percent of zinc sulfate and 4.0 to 23.0 percent of monopotassium phosphate. The corrosion inhibitor disclosed by the invention is high in corrosion inhibition capability and can achieve a corrosion inhibition effect on a chlorine salt type snow-melting agent. After the corrosion inhibitor is added, the corrosion of the chlorine salt type snow-melting agent to metal and concrete and the harm to vegetation can be reduced. The corrosion inhibitor is mainly prepared from plants, is non-toxic, and is a very efficient and environment-friendly corrosion inhibitor. The invention further provides a preparation method and application of the plant type composite efficient corrosion inhibitor.

The invention relates to the preparation of a nano silver wire / nitrogen-doped multi-wall carbon nanotube composite electrode and a method for determining glucose by using the same. The electrode comprises a working electrode, a reference electrode, an auxiliary electrode and an electrochemical workstation, wherein the working electrode is based on PDMS, with nano silver wires as a conductive layerand nitrogen-doped carbon nanotube particles as a reaction catalytic layer; an Ag / AgCl is taken as an electrode of the reference electrode, and the auxiliary electrode is a platinum wire. By utilizing the good flexibility of the PDMS, and combining the good conductivity of the silver nano wires and the good response of nitrogen-doped multi-walled carbon nanotubes to the glucose, the electrode with high sensitivity to glucose is obtained. Compared with other methods, the method is relatively high in sensitivity and reproducibility for the determination of the glucose, low in test cost and freeof secondary environmental pollution, and can be widely used for analysis and determination.

The invention relates to a recycling and treating method of p-toluic acid and ortho-aminophenol in wastewater of a process for synthesizing 2-(4-methyl phenyl)-benzoxazole by taking the p-toluic acid and the ortho-aminophenol as raw materials. The method is characterized by comprising the steps that p-toluic acid precipitates are firstly precipitated out through acidification, and the p-toluic acid is recycled through filtration; filtrate is treated with a reducing agent, the pH value of the filtrate is regulated to be alkali, adsorption is performed with adsorbent resin, elution and analysis are performed, the pH of eluant is regulated to 8.5-9, concentrating and temperature lowering are performed to precipitate phenol out, and filtration is performed to obtain the ortho-aminophenol. According to the method, the p-toluic acid and the ortho-aminophenol in the process wastewater can be economically and effectively recycled, the purity of the p-toluic acid and the purity of the ortho-aminophenol can reach 94.5% or above and 95.8% or above respectively, and the p-toluic acid and the ortho-aminophenol can directly serve as the raw materials to be put and used over and over again in a condensation reaction; organic solvent is not related and used in the treatment process, secondary environmental pollution is not generated, cleanliness and environmental protection are achieved.

The invention relates to a method and a device for preparing a road snow-melting agent by using waste incineration fly ash. The method comprises the following steps: mixing the waste incineration fly ash with semicoke, then adding the mixture into molten sodium chloride for reaction, and introducing chlorine gas into the molten sodium chloride during reaction; discharging fly ash fused salt generated during reaction from the molten sodium chloride, and precipitating the fly ash fused salt at the bottom of the molten sodium chloride to obtain fly ash fused salt slag, and collecting the fly ash fused salt at the bottom to obtain the road snow-melting agent; condensing and collecting volatile gas generated during reaction, and then recycling the chlorine gas. The device comprises a device for implementing the method. According to the treatment method, the process is simple, the volume of the fly ash is reduced by 50 percent, the weight of the fused salt slag is reduced by 50 percent, and a volume reduction rate and a weight reduction rate are obvious.

The invention relates to a power plant desulfurized gypsum granulation process, particularly relating to a power plant desulfurized gypsum dry granulation process. The specific steps are: coal-fired power plant flue gas is desulfurized to obtain desulfurized gypsum with a water content between 0% and 15%, and the desulfurized gypsum is then sent to degassing densification machine to eliminate air and increase the processing of desulfurized gypsum bulk intensity. The processed desulfurized gypsum is then sent to a dry high pressure granulating machine for granulation. The invention has short production cycle, simple and quick process, convenient operation, great pressive strength of the granulation product, uniform and even particles, large output and low energy consumption, without secondary environment pollution.

The invention discloses a functional ceramic fiber air filter element and a preparation method thereof. The functional ceramic fiber air filter element has a drum-shaped or plate-shaped shape. The preparation method comprises the following steps: a, preparing a slurry: adding a high-silica molecular sieve adsorbent and a functional additive into an inorganic glue solution, and performing stirringfor uniform dispersion in order to obtain a viscous slurry; b, coating with the slurry: immersing a ceramic fiber paper in the viscous slurry, performing dip-coating knifing, and then performing heating drying curing to obtain a ceramic fiber paper coated with the high-silica molecular sieve adsorbent and the functional additive; c, folding and shaping: folding the ceramic fiber paper to form a paper pile, and gluing and cutting the paper pile to form a filter element main body; and d, assembling the finished product: bonding and sealing the filter element main body and a filter element end cap to prepare the functional ceramic fiber air filter element. The functional ceramic fiber air filter element has the advantages of high filtering precision, low replacement frequency, no secondary pollution, excellent hydrophobicity, excellent antibacterial property and excellent air purifying function; the product can be recycled; and the inorganic glue solution is helpful for shaping the ceramic fiber, and ensures that the ceramic fiber filter element main body have a good stiffness.