3653 results about "Polluted environment" patented technology

The invention relates to a method for preparing xylose by using squeezed waste alkali in the viscose fiber production process. According to the method, xylose finished products are obtained through work procedures of hemicellulose solution preparation, hemicellulose extraction, hemicellulose hydrolysis, neutralization and deacidification, preconcentration, decoloration, ion exchange, ordinary concentration, crystallization, separation and drying. When the technical scheme provided by the invention is adopted, harmful environment-pollution substances such as waste alkali and waste water generated in the viscose production process can be thoroughly eliminated, the standard of full-flow-process clean production can be reached, viscose production enterprises can also produce xylose in the viscose production process, the goal of environment protection is reached, and meanwhile, the waste reutilization is also realized.

The invention relates to a phosphorus-free metal cleaning agent comprising the components of, by weight, 2-20% of a cleaning aid, 1-20% of a surfactant, 1-10% of a chelating agent, 1-20% of an emulsifier, 1-10% of an antirust agent, 0.2-4% of a copper alloy corrosion inhibitor, 1-10% of a penetration agent, 1-6% of a solubilizing agent, 0.1-0.6% of a defoaming agent, and balance of water. The cleaning agent provided by the invention has excellent cleaning capacity, long rust proof period, low foam, long service life, and the like. The cleaning agent is suitable for ferrous metal and non-ferrous metal processing industries. The agent has the advantages of no volatilization, no irritation, no toxic or harmful substance such as nitrite, no damage to health, and no environment pollution.

The present invention relates to environmental protection engineering technology, and is especially sludge drying and incinerating treatment process. The present invention has effective utilization of heat energy, no exhaust of harmful gas and bad smell, no exhaust of dangerous clinker, simple structure and high burning efficiency of the sludge incinerating system, no need of auxiliary fuel and other advantages.

The invention discloses an ultra-thin fireproof coating for a steel structure and a preparation method thereof. The coating has the characteristics of high gloss, good water resistance, strong adhesion force and so on of a solvent based ultra-thin fireproof coating, also has the advantages of water-based coatings by taking water as a medium, and satisfies the direction of developing low-pollution and environment-friendly coatings of the coating industry. The technical proposal comprises that the ultra-thin fireproof coating for the steel structure is prepared from the following components by weight portion: 10 to 35 portions of acrylic hybrid emulsion, 10 to 25 portions of dehydration and carbon-forming catalyst, 10 to 25 portions of carbon forming agent, 5 to 20 portions of foaming agent, 5 to 20 portions of flame retardant, 5 to 25 portions of pigment and filler, 3 to 10 portions of reinforcing agent, 5 to 10 portions of latent solvent, 1 to 5 portions of dispersant, 0.1 to 1 portion of foam killer, 0.2 to 2 portions of flatting agent, 0.2 to 2 portions of thickening agent, 1 to 5 portions of film forming additive, and the balance being water.

A method for constructing pipe piles while drilling for building or bridge foundations. The construction steps are to cover high-strength prestressed concrete pipes or steel pipes with drill pipes on the ground first, and install impactors and reaming retractable drill bits at the front ends of the drill pipes. , Follow the pipe while drilling, follow the pipe retaining wall, drill to the design elevation, stop drilling, withdraw from the reaming to shrink the drill bit, use the mud pump to clean the mud and sediment, pour concrete into the pipe, and simultaneously inject pressure grout to the outside of the pipe wall , stop when concrete and grout reach the ground; the object of the invention is to propose a construction method with fast construction speed, reliable quality, less material consumption, high bearing capacity of piles, mechanized operation, and environmental protection. In the construction method of bored cast-in-place piles, the use of mud retaining walls pollutes the environment, the hole is easy to collapse during the drilling process, the quality of concrete pouring is unstable, and the prestressed pipe piles are easy to cause the soil to rise. The strength of the pile body constructed by the invention is high. , There is no sediment at the bottom of the pile, and the pile end is completely rock-socketed, which can reach more than 2 times the bearing capacity of the same diameter bored pile.

The invention relates to the field of dust fall agents, in particular to an environment-friendly dust fall agent for a coal mine. The environment-friendly dust fall agent enables water mist on the surfaces of dust particles to quickly wet and permeate the insides of the dust particles, dust particle coagulation is quickened, dust particle sedimentation is quickened, and the dust fall agent is biodegradable. The environment-friendly dust fall agent for the coal mine comprises the following raw materials, by mass ratio, 60-100 parts of surface active agents, 5-30 parts of biodegradable high-molecular polymers, 20-60 parts of solvents, 6-20 parts of antifreezing agents and 0.5-4 parts of metal corrosion inhibitors. The dust fall agent is a concentrated solution, the ratio can reach 1: 1000 to 1: 5000, quick dust fall can be achieved, chloride salt is not contained, the agent is biodegradable after being sprayed, and therefore secondary environment pollution is avoided.

The invention relates to a waterborne acrylic acid modified epoxy ester emulsion, the synthetic formula of which consists of the following components (by weight percentage): 12%-17% of epoxy resin; 14%-19% of unsaturated fatty acid; 4%-6% of a (methyl) acrylic ester or vinyl monomer; 2%-4% of methacrylic acid; 0.1%-0.5% of an initiator; 4%-6% of a cosolvent; 1.5%-2.5% of a neutralizing agent; and 45%-55% of deionized water. The waterborne epoxy ester amino baking varnish based on the waterborne acrylic acid modified epoxy ester emulsion involved in the invention adopts water as the diluent, takes the pigment and filler that both are free of harmful lead or chromium compound, has no risk of combustion, explosion, poisoning and environmental pollution, and is safe and environment friendly. The amino baking varnish can employ brush coating, spray coating, dip coating and other construction methods.

The invention relates to heavy metal resistance plant growth-promoting bacteria and a preparation applying method thereof, which belongs to the bioremediation field of heavy metal polluted environment. A bacteria strain D54 with a preservation number of CGMCC No. 3223 belongs to the Burkholderia sp. and has higher resistance to a plurality of heavy metals, wherein the resistances to Pb <2+>, Cd <2+>, Cu <2+>, Zn <2+> respectively reach 800 mg/L, 1500 mg/L, 150 mg/L and 2500 mg/L. In addition, the bacteria strain D54 has the plant growth-promoting functions of producing plant growth hormone (IAA), producing 1-amino-1-carboxyl cyclopropane (ACC) deaminase, secreting siderophore, dissolving inorganic phosphate, fixing nitrogen and the like, has the biological prevention functions of antagonizing plant pathogenic bacteria inbreak and the like, and can obviously improve the biomass of the plants applied the invention and improve the resistance to diseases and stresses. The number of the effective viable bacteria in liquid preparation reaches 1-2 billion/ml and the number of the effective viable bacteria in solid preparation reaches 1 billion/g. Soaking seeds for 1-2 hours in the liquidpreparation which is diluted 100 times and irrigating the diluted liquid preparation 1-2 times (10ml/kg) after 2-3 weeks of the sprouting of the seeds can effectively improve plant viable bacteria infection probability.

The invention relates to a method and a device for preparing biomass fuel from biomass materials. The method comprises the following steps: loading biomass materials in a gas generating chamber, and carrying out pyrolysis to generate mixed gas; cracking the tar to generate a combustible gas; filtering off fly-ash and residual tar in the combustible gas; carrying out gas-water separation to separate water; and deodorizing to obtain the biomass fuel. The device comprises the gas generating chamber (2) fixed on a pedestal (1), a material storage chamber (3) fixed on the upper side of the gas generating chamber (2), a cracking catalyst absorber (4) fixed on the upper side of the material storage chamber (3), a gas-water separator (5) communicated with the cracking catalyst absorber (4), and a deodorizing and gas storage box (6) communicated with the gas-water separator (5). The device and the method have the advantages that the device and the method can effectively remove tar, fly-ash, vapor, odor, etc. in the biomass fuel without contaminating the environment and can ensure the combustion heat efficiency of the biomass fuel, etc.

The invention provides black phosphorus nanosheet and a preparation method and application thereof. The method comprises the following steps: placing black phosphorus powder into anaerobic water to form a dispersion of black phosphorus powder, and selectively controlling pH of the dispersion to alkaline level; carrying out ultrasonic treatment on the dispersion of black phosphorus powder in an inert environment; and after the ultrasonic treatment, centrifuging and collecting a supernatant so as to obtain the black phosphorus nanosheet. The invention also provides the black phosphorus nanosheet prepared by the method and application of the black phosphorus nanosheet. As no organic solvent is used by the method, the prepared black phosphorus nanosheet has no organic solvent residue, will not pollute the environment and can be applied in the field of biomedicine.

The invention relates to a polypropylene foaming material for opening aperture and a preparation method thereof, which pertains to the polymeric material field and aims at solving the disadvantages of the existing foaming material for opening aperture of high technological cost, difficulty in recovery, environmental pollution and complicated operation. The foaming material of the invention consists essentially of polypropylene resin composition, and the composition consists of polypropylene A with a melt flow velocity of 0.01 to 10g/10min, polyethylene B with an Mw of 600,000 to 5,000,000, a compatilizer C and a normal additive; the additive accounts for no more than 10 weight percent, and B accounts for 1 to 40 weight percent while C accounts for 0 to 5 weight percent in the mixture of A, B and C. The composition is heated over the molten temperature thereof in the invention, a physical foaming agent with 1 to 20 percent of the melt in weight is injected under the pressure larger than the pressure of the melt, then the mixture is exposed under the environment with a pressure lower than the pressure of the composition melt, thus the polypropylene foaming material for opening aperture is prepared. The invention has the advantages of low cost, simple operation, no pollution, uniform and unblocked foam pores, and the opening percentage of at least 50 percent.

The invention relates to an aerated concrete block, which consists of paper-making waste, combustion residue, quicklime, cement and gypsum. The weight percentage of the compositions is as follows: 5 to 30 percent of the paper-making waste, namely white mud and green mud; 30 to 70 percent of the combustion residue, namely fly ash and furnace slag; 10 to 25 percent of the quicklime; 3 to 20 percent of the cement; and 1 to 5 percent of the gypsum. The aerated concrete block fully utilizes the paper-making waste and the combustion residue, reduces consumption of raw materials such as the cement, and not only solves the problem of environmental pollution due to direct discard of the paper-making waste but also greatly saves the raw materials such as the cement. Simultaneously, the invention also provides a method for manufacturing the aerated concrete block.

The present invention disclose a composite gelate material and method of producing the same, including portland cement, fly ash, steel scoria powder, granulated blast furnace slag, admixture of pozzuolana, silicon gray, sulphates excitant, alkaline excitant, additive etc, through technics of mix grinding, agitating to get the needed powder; possessing advantages of high high-early strength, perfect workability, perfect antifreezing and impervious ability, high dose of waste, no environment polluting etc, simultaneity being able to improve concrete stability with a low cost and simple technics, which can be used as cementing materials of high-performance concrete.

The invention discloses a baking-free and steaming-free brick, a baking-free and steaming-free building block and a preparation method thereof. The brick and the building block comprise the following components in percentage by weight: 5 to 40 percent of calcined magnesia, 1 to 25 percent of industrial waste slag, 4 to 35 percent of conditioner solution, 0 to 30 percent of reinforcing and thickening agent, 5 to 85 percent of aggregate, 0.01 to 8 percent of waterproof admixture and 0 to 0.5 percent of water reducing agent. The brick and the building block have the advantages of normal-temperature curing reaction, quick condensation and hardening, high strength, heat insulation, sound insulation, flame resistance and freezing resistance; the water resistance is improved, the service life of the product is prolonged, and meanwhile, the defects of moisture absorption, halogenation and scumming of the product are overcome; recycle and comprehensive utilization of solid wastes are promoted, and environmental pollution can be reduced; and the volume weight of the product can be lightened, the transportation energy consumption can be reduced, the thermal resistance can be improved, and the heat insulation performance can be improved. The brick and the building block have no toxicity, no smell, no radioactivity, no harm to human body and no environmental pollution, and have the characteristics of cleanliness and environmental friendliness; and clay is not adopted so that the tilled land resources can be effectively protected.

The invention relates to an immobilized microbial inoculant for restoring petroleum-hydrocarbon-polluted alkaline-saline soil and a preparation method thereof. A salt/alkali-tolerant petroleum hydrocarbon degradation bacterium variant corynebacterium B05: (Corynebacterium variabile) HRJ4 (the collection number is CGMCC No.10134) is screened from alkaline-saline petroleum-polluted soil, and sodium alginate is added into a carrier biochar to prepare immobilized bacterium pellets which are stored and used for treating petroleum-hydrocarbon-polluted soil. The immobilized bacterium pellets are prepared by mixing the bacterium suspension, biochar and sodium alginate in a v/w/w ratio of 100:5:2. The invention provides a preparation method of the immobilized bacterium pellets. The immobilized microbial inoculant has the advantages of simple technique, obvious advantages of the degradation bacterium, and high stability, is beneficial to the petroleum hydrocarbon degradation bacterium to adapt to the new polluted environment, enhances and improves the microecological environment quality of the soil, does not cause secondary pollution to the environment, and can obviously enhance the degradation efficiency of petroleum hydrocarbons in the alkaline-saline soil.

The invention relates to a protective coating for the surface of a steel workpiece, which comprises the following components: graphite, sodium silicate and a surface penetrant, wherein the volume ratio of the graphite to the sodium silicate is 1: 3-7; and the surface penetrant accounts for 0.05 to 0.15 percent of the total volume in the components. The coating has the advantages that the coating not only avoids disadvantages caused by usual methods such as adding alloy, performing surface high-frequency quenching, forming carburizing atmosphere and the like, prevents the surface of the steel workpiece from high-temperature oxidation decarbonization, but also improves the hardness of the surface of the steel workpiece (matrix) to realize the improvement of the wear resistance thereof, and solves the existing problems of high production cost, low production efficiency, long production period, large energy consumption and environmental pollution.

The invention belongs to the ironmaking and steelmaking field, and provides a steelmaking regulator with settled dust as a main material and a method for preparing the same. The invention aims at solving the problem existing in prior art that discharged settled dust causes environmental pollution. The steelmaking regulator is prepared from the following materials in weight percentage: 67 to 73 percent of settled dust, 7 to 13 percent of silicon carbide material, 15 to 20 percent of magnesium material, and bonding agent which accounts for 5 to 10 percent of the total weight of the settled dust, the silicon carbide material and the magnesium material. The steelmaking regulator can completely replace the prior technique of adding modifier and furnace protecting material, has good slag regulating and slag thickening effect, has better slag splashing furnace protection effect compared with the prior product, reducing TFe in slag, obviously lowering production cost of steelmaking, thoroughly eliminating environmental pollution caused by the emission of steelmaking high calcium settled dust and realizing the recovery and the reutilization of resources.

This invention discloses a method for producing water-permeable cement concrete road surface material composition from steel slag. The components comprise: 3-8 mm steel slag (crush value is lower than 5%, and dissociated CaO content is less than 3%) 70-85%, C52.5 Portland cement 10-25%, reinforcing agent 0.5-1%, colorizing powder 0-1%, and water 3.5-5%. The road surface material composition has such advantages as high water permeability and high compressive strength. Besides, steel slag is utilized, which can save resources and reduce environmental pollution.

The invention discloses a full-automatic discharging method and full-automatic discharging equipment for a steel strand anchor cable and relates to steel strand anchor cables for mine roadway support. The technical problems that the conventional steel strand anchor cable production method is low in efficiency and the environment is polluted are solved. The discharging method comprises the following steps of: (1) feeding a steel strand; (2) locally heating the steel strand 1; (3) rapidly cutting the steel strand in a local heat state through a hydraulic shearing device; (4) discharging the steel strand anchor cable, and finishing a full-automatic discharging process; and (5) packing a steel strand anchor cable group, and finishing production of a group of steel strand anchor cables. Because the steel strand anchor cable is produced by employing a dual-disc rack, a steel strand vortex local heating and hydraulic shearing, the full-automatic discharging method is used for discharging the steel strand anchor cables for mine roadway support and has the advantages of high production efficiency, safety, reliability and no pollution.

The invention discloses bentonite/modified zeolite compound super absorbent cat litter which comprises components of raw materials in percentage as follows: 50%-60% of sodium bentonite, 15%-25% of modified zeolite, 5%-8% of carboxymethylcellulose, 2%-4% of nanocarbon, 10%-15% of bran and 3%-5% of polyacrylamide. According to the cat litter, the zeolite is modified, so that the water-absorbing property of the zeolite can be remarkably improved; and then the bentonite, the nanocarbon and the bran are compounded, so that the cat litter is obtained, and the water-absorbing property and the deodorization function of the zeolite can be improved. After urine is absorbed, the cat litter can be put into a closestool and is pumped away; and the cat litter is convenient to use without polluting the environment.

The invention discloses a waste PCB (printed circuit board) crushing and sorting system. The waste PCB crushing and sorting system comprises a disassembling unit, a crushing unit, a primary air classification unit, a deferrization unit, a grinding unit, a fine deferrization unit, an air classification separating unit, a high-voltage electrostatic separation unit, a dust and waste gas disposition unit and a central control unit, wherein a circuit board is disassembled and crushed, and then is subjected to procedures such as primary air classification, primary deferrization, grinding, secondary deferrization, air classification separating and high-voltage electrostatic separation, and a copper-containing metal concentration with the purity of 99.5% is obtained. The waste PCB crushing and sorting system provided by the invention is used for recovering available resources in a waste PCB plate treating process, treating the waste PCBs in scales, efficiently recovers resources, and avoids the environment pollution.

The invention discloses a method for preparing earthworm cultivation substratum. By mixing livestock dung and edible fungus residue without foreign matters to carry out anaerobic fermentation, the method obtains the substratum for cultivating and reproducing earthworms, the livestock dung is pig dung or cow dung or the mixture of pig dung and cow dung, and the edible fungus residue is residue which is left over in the growth of cultured saprophytic lignicolous fungi or coprophilous fungi. Since the method utilizes the livestock dung and the edible fungus residue as the cultivation substratum to raise the earthworms, the method not only solves the problem of dung accumulation and waste and prevents environment pollution, but also increases the cultivation scale and growth quality of the earthworms by adding the edible fungus residue, thus effectively increasing the output of the earthworms.