55results about How to "Improve void structure" patented technology

The invention relates to a manganese residue compound fertilizer and a preparation method thereof. Manganese ore leached residue is used as the main raw material, a carbonate-containing fertilizer is added to convert calcium sulfate in the manganese residue into calcium carbonate, and the manganese residue compound fertilizer is prepared from the manganese residue containing the calcium carbonate, the lignin-containing additive, and one or more of nitrogen fertilizer, phosphate fertilizer and potash fertilizer. The carbonate-containing fertilizer and the lignin-containing additive can effectively prevent soil from packing together, keep the acid-base balance in soil, and enhance the fertilizer efficiency. The invention can effectively utilize abundant manganese residue generated in electrolytic manganese industry, and provides an effective way for recycling manganese residue.

The invention discloses a method for preparation of a nitrogen doped porous nano carbon material with biomass as the carbon source by gel process and application thereof. The method includes: selecting soybean residue or soybean as the carbon source, using a transition metal salt as the coagulant, and making soaked, grinded and boiled soybean milk solidify to form tofu gel; and conducting vacuum freeze drying, and performing high temperature carbonization and activation under an inert atmosphere, thus obtaining the transition metal embedded nitrogen doped porous carbon nano material. The preparation method provided by the invention has the advantages of simple process operation, low cost and easy realization of large-scale commercial production. The nitrogen doped porous nano carbon material prepared by the method has a high degree of graphitization, large mechanical strength and high conductivity, is embedded with metal nanoparticles, and can be applied to supercapacitors, lithium-ion batteries, catalysis, adsorption and other fields.

The invention discloses a method for pyrolyzing municipal sludge and preparing biological oil and active carbon simultaneously, which can obtain high-quality biological oil and active carbon simultaneously and solves the problem that the conventional sludge pyrolysis method only can obtain a single recycled product. In the method, sludge (A) enters a pyrolysis reactor (1) through a vane feeder (1-1); fluidized wind (B) enters the pyrolysis reactor (1) through a wind chamber (1-2) and a wind distribution plate (1-3); a cyclone separator (2) catches and collects fallen pyrolytic carbon (C) and returns the pyrolytic carbon (C) to the pyrolysis reactor (1) for circulation through a blank pipe (3), a material feedback device (4) and a material returning pipe (5); the pyrolytic carbon (C) becomes active carbon (D) after repeated circulation; and then, the active carbon (D), together with pyrolytic gas (E), enters a ceramic filter (8) and is caught and collected by the ceramic filter (8); the pyrolytic gas (E) discharged by the ceramic filter (8) enters a condenser (9); and the lower part of the condenser recovers biologic oil (H) and discharges noncondensing gas (I).

Provided is a tuble vegetable function fertilizer. The tuble vegetable function fertilizer is prepared from, by weight, 25-35 parts of urea, 1-5 parts of ammonium sulfate, 20-35 parts of monoammonium phosphate, 35-45 parts of potassium sulfate, 1-5 parts of organic carbon, 1-5 parts of potassum fulvic acid, 0.5-1 part of calcium superphosphate, 0.1-0.5 part of borax, 0.5-1 part of magnesium sulfate, 1-5 parts of mixed fungicide, 0.1-0.5 part of synergist and 1-5 parts of other additives. A preparation method comprises the steps that the pH value is adjusted for a fermentation waste solution, microelement is added after heating for a complexation reaction, and organic carbon is obtained; the urea, ammonium sulfate, monoammonium phosphate, potassium sulfate, calcium superphosphate, borax, magnesium sulfate, synergist and other additives are prepared into particles; organic carbon and potassum fulvic acid wrap the outer layers of the particles, and finally the tuble vegetable function fertilizer can be obtained by adding the mixed fungicide. According to the tuble vegetable function fertilizer, comprehensiveness of tuble vegetable growth nutrients is effectively guaranteed, soil insect damage is reduced, malformation of tuble crops can be prevented, and the yield is increased.

The invention provides an ecological method for restoring polycyclic aromatic hydrocarbon polluted farmland soil, which comprises the following steps: selecting plants such as corns, soybean, castor-oil plants and alfalfa with the restoring function of the polycyclic aromatic hydrocarbon polluted soil for seeding according to a plant conventional mode, wherein the plant growth period is one growth season and is between 100 and 150 days; 2, applying efficient biological microbial agents to farmland at 5 to 10 days before the plant seeding with the application amount between 40 to 50 kg/mu, and carrying out ploughed fallow on the farmland in 24 hours after the application; 3, applying sludge fermentation fertilizer into the farmland at 2 to 3 days before the plant seeding with the application amount of 100 to 200 kg/mu, and carrying out ploughed fallow and ridge preparation on the land in 24 hours after the application; and 4, installing a water discharge pump used for water discharge in a rain reason in the restoring field every 4 to 5 ridges of the land, and carrying out ploughed fallow for 2 to 3 times in each month of the three months before the plant growth. The invention has the characteristics of low cost, strong operability, no secondary pollution and high restoring efficiency.

The invention belongs to the field of environmental protection and environmental catalysis and particularly relates to a flat-plate type high-temperature SCR (Selective Catalytic Reduction) denitration catalyst and a preparation method thereof. The preparation method comprises the following steps of: by adopting a nano composite oxide CeO2-TiO2 or CeO2-ZrO2 as a carrier, and adopting WO3 as an active component, carrying out stepped mixing, rolling coating, pleating, shearing, drying and roasting to obtain the flat-plate type high-temperature SCR denitration catalyst on the basis of adopting CeO2-TiO2 or CeO2-ZrO2 composite oxide as the carrier. The product has excellent high-temperature denitration performance, and is applicable to flue-gas denitration under the temperature of 500-700 DEG C; and the product has excellent mechanical performance, sulfur-dioxide poisoning resistance and sintering resistance.

The invention belongs to the technical field of a medical apparatus, and discloses an antibacterial alginate hydrocolloid dressing and a preparation method thereof. The antibacterial alginate hydrocolloid dressing comprises, by weight, 10-30 parts of gelatin, 5-15 parts of modified sodium alginate, 10-20 parts of polyethylene glycol, 20-40 parts of polyvinyl alcohol and 0.05-0.1 part of antibacterial peptide D2A21. The preparation method includes preparation of a gelatin-modified alginate composite material, preparation of a polyvinyl alcohol and antibacterial peptide D2A21 fibrous membrane, and preparation of a hydrocolloid dressing. The method is simple and is low in cost. The prepared hydrocolloid dressing is great in water absorption and excellent in performance, and has good compatibility and antibacterial effect.

The invention discloses a method for preparing cow dung charcoal for inhibiting nitrogenous fertilizer leaching loss, and relates to a charcoal preparation method. The method comprises the following steps of pretreating cow dung, namely, collecting and drying cow dung so as to reduce the water content of cow dung to be 10-20%; preparing the charcoal, namely, preheating to keep the water content of cow dung to be about 5-8%; splitting the charcoal, namely, performing pyrolysis for 2-3 hours under anoxic condition; finally turning off a power supply control switch of a muffle furnace; cooling to be less than 80 DEG C under the condition that the door of the muffle furnace is closed; taking out a crucible utensil from the muffle furnace; putting into a drier for being cooled for later use; crushing the charcoal, namely, putting the cow dung charcoal prepared from splitting into a crushing machine for crushing, screening, and taking the cow dung charcoal of 20-40 meshes. Due to adoption of the method of applying the cow dung charcoal soil improver, the resource utilization ways of cow dung are widened, the utilization efficiency of a nitrogenous fertilizer is improved, and the environment pollution caused by nitrogenous fertilizer leaching loss is reduced.

The invention discloses a composite wastewater treatment medicament and a preparation method thereof, and belongs to the technical field of recycled water treatment. The water treatment medicament prepared through the invention modifies an activated carbon system through a carbon-nano tube, the specific area of the medicament is increased, a porosity structure is intensified, and adsorption, electrostatic and other effects are enhanced, so that quick enrichment of pollutants is realized; the loaded persulfate plays a catalytic action through the Co and Fe ions combined by polyoxometalate (POM), the production of the sulfate free radical and hydroxy free radical is further promoted by combining the use of the hydrogen peroxide, and an advanced oxidation effect for activating the persulfateis formed, and the enriched pollutants are efficiently oxidized and degraded. The water treatment medicament prepared through the invention has oxidation and adsorption functions, and can effectivelyremove phosphorous, color and COD.

The invention provides a method for preparing iron-based magnetic activated carbon from by catalytic activation of radix puerariae waste residue with compound enzyme, and belongs to the technical field of activated carbon. The method comprises the steps of by taking the radix puerariae waste residue as the raw material, carrying out raw material pretreatment, preparing a radix puerariae activated substrate through catalytic activation with compound enzymes (cellulase, ligninase and pectinase), and preparing the magnetic activated carbon by doping iron, thereby obtaining the product. The method provided by the invention has the characteristics of wide raw material source, low waste material utilization cost, few production steps and low process energy consumption and no secondary pollution, and is beneficial to environment protection; the activated carbon product are excellent in adsorptive property and the magnetic properties and wide in application, and secondary pollution caused by difficult activated carbon recovery is not generated, etc. The method can be widely applied to preparation of the magnetic activated carbon by using the radix puerariae residue solid wastes as raw materials and doping iron; the activated carbon prepared by the method can be widely applied to the fields of waste water treatment, oil fume desorption and odor adsorption in food preservation and the like.

The invention discloses a preparation method of dedicated cucumber functional fertilizer containing organic carbon. The dedicated cucumber functional fertilizer is prepared from the organic carbon, potassium fulvate and calcium perphosphate, wherein the weight ratio of the organic carbon, the potassium fulvate and the calcium perphosphate is (1 to 6) to (1 to 5) to (0.5 to 1); the organic carbon contains zinc elements which occupies 0.5 to 2 percent of the organic carbon in weight percentage, manganese elements which occupies 0.5 to 1 percent of the organic carbon in weight percentage and iron elements which occupies 0.1 to 1 percent of the organic carbon in weight percentage. Through a water-soluble micromolecules-active organic carbon synergist added in the dedicated cucumber functional fertilizer, organic nutrient can be directly supplied to plants by skipping the step of photosynthesis, so that accumulation of carbohydrate and nutrient absorption of the plants in cloudy and rainy weather are ensured; the nutrient still can be absorbed in the cloudy and rainy weather, healthy growth is kept, and plant wither is effectively prevented from happening; in addition, the effect of dedicated cucumber functional fertilizer can be quickly obtained; cucumber growth is vigorous, the characteristics of beautiful, smooth and straight are obtained, the color is invisible green and glossy, the appearance is good, and compared with the usage of contrast fertilizer, the yield is increased by 20 percent or above.

A railway traffic sound-absorption and -insulation fireproof light-weight water-permeable material and a preparation method thereof. The invention belongs to the environment-protective technical field of fireproofing, sound absorption and insulation, and noise reduction in railway traffic. The material is prepared with calcined shale ceramic granules as an aggregate and Portland cement and quick-hardening sulphoaluminate cement as cementing materials with various additives. The aggregate in equal granular size, the Portland cement and quick-hardening sulphoaluminate cement as the cementing materials, rubber powder, polypropylene fiber, silicon dioxide micro-powder and a polycarboxylate water reducing agent are mixed to prepare a material, wherein the material includes, by weight, 50-80 parts of the ceramic granule in equal granular size, 13-40 parts of the Portland cement, 1-15 parts of the quick-hardening sulphoaluminate cement, 0-8 parts of the rubber powder, 0-5 parts of the polypropylene fiber, 0-8 parts of the silicon dioxide micro-powder, 0.1-0.5 parts of the polycarboxylate water reducing agent and 4-10 parts of water. When being used, the material just needs to be stirred uniformly with tap water for carrying out die casting or pave casting.

The invention relates to the field of kiln furniture materials, in particular to a cordierite-mullite kiln furniture composite material and a manufacturing method thereof. The solid substance of the composite material is composed of waste cordierite-mullite grogs, saw powder, andalusite, washed ball clay, calcined alumina, raw talc, magnesium powder, sodium carboxymethylcellulose and calcium lignosulphonate. The utilization rate of waste cordierite-mullite grogs reaches 25-40%. Through overall adjustment of the raw materials and the manufacturing method, the composite material is small in volume density and weight, the apparent porosity of an internally formed gap structure is increased, so that environment-friendly, economical and low-energy purposes are realized, and the composite material has the same or even higher quality as kiln furniture available in the market currently.

The invention discloses a high-activity tea carbon fiber for a shoe material and a preparation method of the high-activity tea carbon fiber. The high-activity tea carbon fiber is characterized in that agricultural and forestry waste tea leaves, tea residues and tea stems are used as raw materials, a low-temperature calcination activation modification technology is adopted to prepare tea carbon with high tea polyphenol content, and an active crushing process is adopted to prepare high-activity functional tea carbon; then the high-activity tea carbon fiber for the shoe material is prepared by a melt extrusion method; the polyphenol content in the obtained product is 10-500 ppm, the bacteriostasis rate of the obtained product to staphylococcus aureus is larger than 95%, the bacteriostasis rate of the obtained product to escherichia coli is larger than 90%, the bacteriostasis rate of the obtained product to streptococcus albus is larger than 85%, the deodorization performance is so good that an acetic acid elimination rate is more than 99%, an oxalic acid elimination rate is more than 97% and an ethylenediamine elimination rate is more than 97%; the far-infrared emission rate is greater than 0.9, and the far-infrared radiation temperature rise is greater than 1.5. When being applied to shoe material fabric fibers, the high-activity tea carbon fibers have excellent antibacterial and deodorant performance, and ensures that the shoe material has no peculiar smell; and trace tea polyphenol has excellent oxidation resistance, and plays a very important role in improving the microbiological balance of the microenvironment of a shoe material, especially the interiors of shoes.

A production method of a cement-based foamed concrete insulation block is characterized by comprising the following steps: preparing cordierite powder and spinel type ferrite; preparing infrared radiating ceramic powder; performing surface treatment on hollow glass microbeads; pre-foaming polystyrene masterbatch; and with fly ash and cement as main raw materials and the infrared radiating ceramicpowder, the hollow glass microbeads and the foamed polystyrene masterbatch as auxiliary materials, preparing mortar; then filling into a mould, vibrating, autoclaving and drying to obtain the cement-based foamed concrete insulation block. The cement-based foamed concrete insulation block contains a large number of uniformly distributed micropores, shows high physical and mechanical properties, hasthe characteristics of light weight, good insulation, high specific strength and the like, and has a very high infrared radiation characteristic and very high adiabaticity.

The invention relates to a thermal-insulation energy-saving coating and a preparation method thereof; the thermal-insulation energy-saving coating comprises a first coating agent which is used for coating a wall body to form a thermal-insulation base layer, and a second coating agent which is used for coating the thermal-insulation base layer to form a thermal-insulation protective layer, wherein the first coating agent is prepared from an acrylic emulsion, deionized water, propylene glycol, a resin material, nano titanium dioxide, 3-glycidyl propoxy trimethoxy siloxane, Na-montmorillonite, phosphoric acid, nano aerogel, ferrocene boric acid, xonotlite whiskers and an auxiliary agent. The first coating agent is coated to form a heat-insulating base layer, and the second coating agent is coated to form a heat-insulating protective layer. The heat preservation base layer and the heat preservation protection layer are combined to form good heat preservation performance, and the heat preservation protection layer protects the heat preservation base layer. Therefore, the damage of the thermal insulation base layer after long-term use is reduced, and the stability of thermal insulation performance is ensured.

The invention provides a circulating utilization device and method for preparing charcoal-based organic fertilizer by fixed bed straw carbonizing. A straw forming device is connected with a fixed bedstraw carbonizing device; the upper part of the fixed bed straw carbonizing device is connected with an air heat exchanger, and the center of the fixed bed straw carbonizing device is connected with asteam heat exchanger through a pipeline; the bottom part of the fixed bed straw carbonizing device is connected with a mixing device; the back part of a biomass extracting liquid collecting device isconnected with a gas combustion chamber; the back part of the gas combustion chamber is sequentially connected with the steam heat exchanger and the air heat exchanger; the back part of the air heatexchanger is connected with a drying device. The circulating utilization device has the advantages that a small amount of high-temperature air is uniformly led into the fixed bed straw carbonizing device, so as to meet the requirement on energy required by the pyrolysis gasifying reaction of straw, and carbonize the straw into straw charcoal under a low-oxygen environment; the reaction temperatureis controlled by water steam, the gap structure of the straw charcoal is improved, the quality of the charcoal is improved, and the content of carbon in the straw charcoal can reach 45% or above.

The invention provides a green environment-friendly and energy-saving thermal insulation coating, which is prepared from the following components: water, acrylate emulsion, inorganic filler, a silanecoupling agent, an organic silicon leveling agent, polyethylene glycol, a dispersing agent, cellulose aerogel, ferrocene boric acid, nano titanium dioxide and xonotlite whiskers; wherein ferrocene boric acid and xonotlite whiskers are introduced into the cellulose aerogel, so that the gas heat-conducting property is reduced, and the activation energy is improved; therefore, the modified celluloseaerogel has better heat preservation and heat insulation effects; in addition, the inorganic filler and nano titanium dioxide are added to enhance the mechanical properties and corrosion resistance ofthe paint.

The invention discloses a method for producing light heat-insulation wall panels with air purification functions. The method is characterized by comprising steps of expanding kaolin at the high temperatures; hydrolyzing tetrabutyl titanate and carrying out intercalation modification on the kaolin expanded at the high temperatures; preparing foaming slurry from fly ash, cement, porous ceramsite andthe modified kaolin by the aid of mechanical foaming processes; carrying out form filling, vibration, static maintenance, steam-pressure maintenance and drying to obtain the light heat-insulation wall panels with the air purification functions. The fly ash, the cement and the porous ceramsite are used as main raw materials and are assisted by the modified kaolin. The method has the advantages that air refreshing, antibacterial and anti-mildew effects can be realized by the light heat-insulation wall panels with the air purification functions, the light heat-insulation wall panels are light and are low in cost, high in strength and convenient to construct and mount, and outstanding heat preservation, heat-insulation and sound-insulation effects can be realized by the light heat-insulationwall panels.