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

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 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 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 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 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 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 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.