67results about How to "Eliminate white pollution" patented technology

A submerged water quality improving device of combined ecological floating floor belongs to the technical field of ecological environment engineering, comprising a floating plate, a convex floating block, a planting basket, planting basket filler, floating floor plant, artificial float grass, and the like; the convex floating block is fixed above the floating plate; the planting basket is arranged in the planting basket hole of the floating plate; the planting basket filler is arranged in the planting basket; the floating floor plant is cultivated in the planting basket filler; and the artificial float grass is hung under the floating plate. The floating plate is internally provided with a reinforcing rib; and the convex floating block is made into biomimetic shape. After the floating plate and the convex floating block are submerged, the total buoyancy is more than the sum of the total weight of the floating plate, the planting basket, the planting basket filler, the artificial float grass and the float convex floating block, and 1.5 times of weight of the floating floor plant; and the convex floating block emerges from the water. The carrier is simple, convenient and economic, and has high intensity, good durability and reliable planting; the floating plate is submerged so as to achieve the effect of natural water ecological landscape and engineered effect of water quality improvement.

The invention provides a method for preparing a cushion packing material by using agricultural wastes. The method comprises the following steps: S1, grinding the agricultural wastes, putting into a high-pressure kettle, heating to the temperature between 110 and 140 DEG C, stewing and sterilizing under 2 to 3 times atmospheric pressure for 60 to 120 minutes, cooling, and adding whitewash to adjust pH to 6-8; S2, adding 60 to 97 mass parts of agricultural wastes into 3 to 40 mass parts of fungus-containing nutrient solution, and uniformly stirring; S3, fill the mixture obtained in the step 2 into a cushion packing material mold, placing in a dark room at the temperature between 23 and 28 DEG C, standing hypha of fungus for 5 to 7 days; S4, heating the dark room to the temperature of 4 to 5 DEG C, and sterilizing the mixture-containing mold by using ultraviolet light for 30 to 60 minutes, thus obtaining the cushion packing material; and S5, demolding the cushion packing material.

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.

The invention discloses a master batch capable of fully and biologically degrading a plastic film and a preparation method thereof, and belongs to the field of high molecular films. The formula of the master batch comprises the following materials in parts by weight: 100 parts of starch, 2-9 parts of coupling agent, 8-18 parts of dispersing agent, 8-25 parts of polycyclolactone, 1-50 parts of polylactic acid, 8-15 parts of poly (hydroxybutyrate-hydroxyvalerate) (PHBV), 10-25 parts of plasticizer, 0.15-1.0 part of anti-tackiness agent, 0.15-1.2 parts of pro-oxidant and 1-15 parts of chemical precipitation promoter. The preparation method of the master batch comprises the three steps of: thinning the starch; mixing; and forming. The product provided by the invention has the advantages of high starch content, being a fast-growing and renewable resource, rich resource, low unit cost, high substitutability, obvious economic benefit and ecological benefit and capabilities of reducing the content of polycyclolactone, increasing polylactic acid and poly (hydroxybutyrate-hydroxyvalerate) (PHBV), improving product performance and meanwhile reducing cost.

The invention relates to a modified asphalt-based filling and sealing agent using waste foam and a preparation method thereof. The filling and sealing agent contains heavy traffic paving asphalt, a polystyrene resin particle, a surfactant, a plasticizer, a modifier, an antifoaming agent, a filling material and water, wherein the polystyrene resin particle is prepared from waste polystyrene foam products. The filling and sealing agent is a uniform grey black liquid, has a pH value of 9 to 10, solid content of 75 to 85%, a residue softening point of no less than 78 DEG C, residue penetration of 39 to 80 dmm, a flow value of 3 to 8 mm after surface drying, an elastic recovery rate of 46 to 66%, bonding strength of no less than 0.4 MPa and no water seepage at a pressure of 0.3 MPa; and a sample does not fracture in 3 weeks when drawn by 50% at a low temperature of -10 DEG C to -20 DEG C; cold filling and sealing or hot filling and sealing in an on-site heating manner can be adopted for the filling and sealing agent, and storage stability of the filling and sealing agent lasts for 12 months. The preparation method has the advantages of low cost, simple preparation technology and easily available raw materials.

The invention discloses a nano silver polyester biodegradable preservative film, which is prepared by steps of chain extension and modification of dihydric alcohol copolyester of diacid and fatty group by introducing aromatic group and fatty group, the nano silver polyester biodegradable preservative film has strong antibiosis, anticorrosion and fresh-keeping functions, greatly increases the storage and fresh-keeping period of the food, and has modified atmosphere function; in addition, the nano silver polyester biodegradable preservative film has the advantages of excellent performance, high molecular weight, high branching degree, high crystallization degree, less impurity, no toxicity, and biodegradable performance by burying in soil after discharging.

The invention discloses a method for preparing a regenerated cellulose composite membrane by crop straws. The method comprises the following steps of: 1) extracting and refining crop straw cellulose, thus obtaining high-purity straw cellulose slurry; 2) dissolving and regenerating the straw cellulose, namely dispersing the slurry into 5-20 wt percent of NaOH aqueous solution, fully and uniformly stirring the slurry and the solution under the condition of-5-10 DEG C, then adding 5-30 wt percent of urea solution into the mixture, continuously stirring the mixture at the temperature of (-5)-10 DEG C to obtain a homogeneous cellulose solution; and 3) preparing a mixed solution by the cellulose solution and polyvinyl alcohol, and preparing the regenerated cellulose composite membrane by the mixed solution by a tape casting method. According to the method, the crop straws are used as raw materials, and the sodium hydroxide / urea solution is used as a solvent, so that the cost is low, the operation is simple and convenient, the technology is pollution-free, and waste liquid can be used for production fertilizers. The regenerated cellulose composite membrane prepared by the method is high in mechanical property and biodegradability.

The invention discloses a fully-fabricated building system with a grid steel structure. The system comprises wall plates, a floor plate and load bearing combination columns, wherein each wall plate comprises a grid steel frame and gelatine powder granular layers pressed on the two side faces of the grid steel frame in a casting way; both ends of the wall plate are provided with a bulged clamping head; a door opening is formed on the wall plate on one side; each load bearing combination column comprises a connecting column and a gelatine powder granular layer; the gelatine powder granular layer is arranged adjacent to the outer side at the periphery of the connecting column through press casting to make the cross section of the load bearing combination column rectangular; slots matched with clamping heads at the two ends of the wall plate are formed on two, three or four side faces of the load bearing combination column; the wall plates are clamped together through the load bearing combination columns to form a building; and the floor plate is arranged on the top surfaces of the wall plates. The fully-fabricated building system with the grid steel structure has an environment-friendly building structure which has light weight and is heat-preserving, sound-proof, fire-resistant, rust-proof, load-bearing and quake-proof, has high construction efficiency, saves labor hours, has small construction floor area, does not have dust in a site environment and contributes to civilized construction.

The invention discloses a controllable light / biodegradation plastic material, made of a polymer compound. The polymer compound comprises the following components and by weight part: 20 to 40 parts of polyvinyl alcohol, 5 to 25 parts of polyol, 0 to 10 parts of borax, 20 to 40 parts of ethylene acrylic acid copolymer, 5 to 15 parts of organic aldehyde compound and 0.05 to 0.5 part of photosensitizer. The invention fulfills the double functions of biodegradation and light degradation, mainly applies photocatalysis degradation to the ethylene acrylic acid copolymer which is difficult to carry out the biodegradation, and mainly carries out microbial degradation on the polyvinyl alcohol.

The invention provides a biodegradable raw material of a toothbrush handle and a preparation method thereof. The preparation method comprises the following steps: in a twin-screw extruder, adding a mixture of PLA (polylactic acid), EVA (ethylene vinyl acetate), a nucleating agent modified by a compounded surface finishing agent and a stabilizer which are evenly mixed in advance; and then extruding and pelleting at a certain temperature and rotation speed, so as to prepare the biodegradable raw material, which has biodegradability and good toughness and is easy to form, of the toothbrush handle. In the invention, the compounded surface finishing agent with reaction function is adopted, the interface status among PLA, EVA and the inorganic nucleating agent is improved by utilizing in situ reaction so that the toughness of the prepared raw material is greatly improved, and the prepared raw material is easy to shape and can be used for the raw material of the toothbrush handle, thereby retarding the use of petrifaction raw materials and eliminating white pollution. Thus, the raw material of the biodegradable toothbrush handle has wide industrial prospect.

The invention discloses a polyester biodegradable shopping bag, which is used for supermarket shopping and is prepared by chain extension and modification of diacid and dihydric alcohol copolyester of diacid fatty group of introduced aromatic group, and the polyester biodegradable shopping bag has the advantages of excellent performance, high molecular weight, high branching degree, high crystallization degree, less and nontoxic impurity content, and biodegradable performance.

The invention relates to a method for preparing a heat and salinity tolerance filtrate reducer from waste polystyrene foam. According to the method, used raw materials include 20-35 percent of waste polystyrene foam, 50-70 percent of solvent and 5-25 percent of sulfonating agent. The method comprises the following steps: crushing and dissolving the waste polystyrene foam in a solvent, carrying out sulfonating, neutralizing and solvent removal by evaporation on the waste polystyrene foam by using SO3 or concentrated sulfuric sulfonating agent, and drying to obtain the heat and salinity tolerance filtrate reducer. The heat and salinity tolerance filtrate reducer prepared by the method disclosed by the invention has the heat and salinity tolerance filtrate reduction property superior to that of widely used sulfonated phenolic resin; meanwhile, the method is a beneficial method capable of eliminating white pollution.

The invention relates to an improved biodegradable shopping bag which comprises polylactic acid serving as a main component, one or more of PBAT (poly-butyleneadipate-co-terephthalate) or PBS (poly-butylene succinate) or polyhydroxyalkanoate serving as another main component, and a modified inorganic filler serving as a secondary component. The shopping bag prepared by the method provided by the invention eliminates white pollution and improves urban ecological environment.

The invention provides a complete biodegradable plastic masterbatch and method for making same, wherein the plastic masterbatch comprises starch, coupling agent, dispersing agent, poly cyclic lactone, plasticity agent, and oxidation agent, while the preparation process comprises the steps of, (1) fining of starch, dewatering, (2) mixed melting, (3) extrusion forming.

The invention discloses an antibacterial, deodorizing polyester biodegradable food rolling bag. The packaging for cooked food and fresh meat is prepared by carrying out chain extension and modification on copolyester prepared from an aromatic dicarboxylic acid as well as an aliphatic dicarboxylic acid and a dibastic alcohol, has the advantages of antibacterial and deodorizing effects, excellent performance, high molecular weight, high degree of branching, high crystallinity and low content of impurities and is non-toxic and can be biodegradable after the packaging is abandoned.

The invention relates to a formula of edible tableware. The formula includes sorghum flour, buckwheat meal, corn meal, low gluten flour, flour, rice flour and solvents. The technical problem that human injuries are caused by the conventional tableware is solved.

The invention relates to a bio-based environment-friendly degradable material, a film prepared from the bio-based environment-friendly degradable material and a preparation method of the film. The material is prepared from the following raw materials: starch, polylactic acid, glycidyl methacrylate, magnesium stearate, epoxy soybean oil, glycerol, diphenylmethane diisocyanate, 2-phenyl-2-oxazoline,sodium dodecyl benzene sulfonate, 1,3-dimethyl-6-aminouracil, N,N'-bis(2,6-diisopropylphenyl)carbodiimide, dioctadecyl pentaerythritol diphosphite, cerium stearate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide and potassium chloride. The material can be applied to preparation of the film. The prepared film has high mechanical properties, and can be degraded rapidly in a short time, thus eliminating the 'white pollution' truly.

The present invention relates to a flyash water-proof heat-insulating material, which characterized by that it is made up by using flyash and waste old foamed plastics as main raw material, and its composition comprises (wt%) 60%-70% of flyash, 2%-5% of foamed plastics, in which the coarse aggregate (1mm-2mm) is 65%-75% and the fine aggregate (0.5mm-1mm) is 15%-30%, AN microexpanding agent addition quantity is 0.5%-1%, water-reducing agent is 0.5-1%, water repellent is 0.5%-1% and cement addition quantity is 15-30%. Under the flyash water-proof heat-insulating material with large addition quantity of flyash are laid three-layers of high-quality ageing-resisting plastic film (ARPE) as flexible pre-water-proofing layer, so that it not only has the water-proofing function, but also can resist the irradiation of 100% UV ray.

The apparatus for converting waste plastic and rubber into combustible gas includes one gasifying furnace and one cooling liquid trap possessing both cooling and gas-liquid separating functions. The gasifying furnace is one vertical furnace with top material inlet, lower slag outlet, furnace grill over the slag outlet, one top air nozzle connected through one air regulating valve and air pipeline to one air blower, and one gas outlet pipe set in the middle part and connected to the cooling liquid trap. The apparatus can convert waste plastic and rubber into combustible gas capable of being applied as fuel and chemical material while obtaining ash capable of being used as trace element fertilizer and liquid capable of being reused. It has high conversion rate, no secondary pollution and other advantages, and makes it possible to eliminate white pollution radically.

The invention relates to a preparation method for a biomass biodegradable seedling-raising tray. The preparation method comprises the following steps: mixing biomass with urea in a mass ratio being 50:1, mixing the mixture with water in a mass ratio being 10:1, sealing for 30 days at the temperature of 25-45 DEG C after stacking; then, adding a polyvinyl alcohol aqueous solution with concentration being 0.1-5%, grinding and crushing the biomass (straws or stalks) into straw slurry with size being 50-100 meshes; preparing the slurry into a seedling-raising tray wet green body; and finally, feeding the seedling-raising tray wet green body to a drying line ( with the temperature being 80-120 DEG C) to dry, thereby obtaining the biodegradable seedling-raising tray. According to the preparation method, the needed material source is wide, obvious advantages on cost and environmental pollution are achieved, the process is simple, and the operation is convenient.

A water-proof, heat-insulating, dedusting and warming ecologic roof is made up of the plastic water boxes closely arranged on concrete roof. The plastic water box contains water and soil in which plants grow. It has the functions of water-proofing, thermal insualtion, absorbing dust, warming, oxygen generation and natural evaporation.

The invention discloses a method for preparing an antibacterial composite packaging film and belongs to the technical field of packaging materials. The method comprises the following steps: dissolving titanium tetraisopropoxide into anhydrous ethanol in accordance with that the mass ratio of the titanium tetraisopropoxide to the anhydrous ethanol is 1: 10, and adding hydrochloric acid, of which the mass percent is 80%, into the mixed solution in accordance with that the mass ratio of the hydrochloric acid to the titanium tetraisopropoxide is 2: 10; stirring the solution for 1 hour at the temperature of 30 DEG C to 50 DEG C, and standing the solution for 5 hours so as to precipitate out TiO2 anatase microcrystals; slowly adding zein into a TiO2 nanohydrolyzate in accordance with that the mass ratio of the zein to the titanium tetraisopropoxide is 1: 2 so as to form a mixed solution, adding glycerine, of which the mass is 25% to 40% that of the entire system, into the mixed solution, heating the mixed solution to the temperature of 50 DEG C to 70 DEG C, carrying out continuous stirring for 10 minutes, and carrying out heat preservation for 10 minutes; and pouring the mixed solution on a plastic sheet, and carrying out drying for 20 to 40 minutes at the temperature of 45 DEG C, thereby preparing the film. The antibacterial composite packaging film prepared by the method is natural and pollution-free, has high water resistance, is high in strength and is not prone to damage.

The invention discloses a hydraulic steam recycling device which is characterized in that the invention comprises a pressurizer (1) and the pressurizer (1) is connected with a hydraulic cylinder (3) through a heat insulated shaft joint (2). The hydraulic cylinder (3) is connected with a hydraulic station (5). The hydraulic station (5) is provided with an electrical control gear (4). The invention has the advantages of small size, beauty, simple and flexible mounting as well as stable and reliable operation. Simultaneously the invention is simple, convenient and east to control the devices. The reciprocating speed of the hydraulic cylinder can be adjusted at any time according to the size of a boiler output and the amount of the steam with water in a closed loop to lead the devices to be in a reasonable operation state at any time; thereby greatly improving the stability and reliability of the whole set of the devices.

A method of photocatalytic synthesis of a jackfruit filament polysaccharide antibacterial membrane is disclosed. The method includes S1) mixing and extracting jackfruit filament degreased powder with water for 2-4 h, then performing concentration, adding ethanol into the product of concentration, allowing the mixture to stand, and centrifuging and separating the mixture to obtain a precipitate A; S2) preparing the precipitate A into a polysaccharide solution having a concentration of 40-60%, fully mixing the polysaccharide solution with glycerin in a mass ratio of 1:0.016, and then heating the mixture with a water bath to obtain a solution B; S3) adding titanium dioxide particles into water and performing ultrasonic dissolution to obtain a solution C; and S4) adding the solution C into the solution B slowly, performing photocatalytic treatment, then evenly pouring the mixture to a culture dish and finally performing vacuum drying to obtain the antibacterial membrane. The antibacterial membrane has good mechanical performance, water vapor barrier performance and optical characteristics, and also has surface antibacterial activity, thus meeting food package strength requirements and mechanical processing requirements, overcoming the food safety problem caused by microbial breeding on surfaces during a food storage process and expanding deep development and utilization of jackfruit leftovers.

The invention relates to a method for preparing an adhesive from waste polystyrene foam plastic, belonging to the field of waste reutilization methods. The method comprises the following steps: descaling the waste polystyrene foam plastic, pulverizing, putting in a container, adding a commercially available petroleum cracking coproduct mixture at normal temperature, sufficiently dissolving and stirring uniformly; meanwhile, heating ethyl acetate in a water bath to 40 DEG C or so, slowly adding SBS (styrene-butadiene-styrene), quickly stirring until all the SBS is dissolved, and cooling to room temperature; and mixing the waste polystyrene foam plastic solution and SBS solution, sufficiently stirring uniformly, adding rosin, sufficiently stirring until the rosin is completely dissolved, and proportionally and sequentially adding an emulsifier and a plasticizer to obtain the adhesive. The adhesive has the advantages of favorable properties, energy saving, low investment and low cost, eliminates white pollution, fully utilizes the resources, and achieves the goals of optimizing the resource utilization and minimizing the environmental pollution.

The invention belongs to the technical field of wood plastic composite material, and more specifically relates to a polyethylene / eucalyptus wood powder composite material, and a preparation method thereof. The polyethylene / eucalyptus wood powder composite material is composed of, by weight, 60 to 70% of dried eucalyptus wood powder, 13 to 33% of recycled polyethylene, 5 to 15% of LDPE-g-MAH modifying agent, 0.1 to 1.0% of paraffin, 0.1 to 1.0% of high molecular wax, 0.1 to 1.0% of calcium stearate, and 0.1 to 1.0% of lead stearate. The raw materials are cheap and widely available; the using amount of the LDPE-g-MAH modifying agent is low; wood powder filling amount is high; the mechanical properties are excellent; the polyethylene / eucalyptus wood powder composite material can be widely used in the fields such as household products, common section bars, vehicles and ships, and public transportation to take the place of timber and plastic.

The composite heat insulating polystyrene brick is made from polystyrene foam as main raw material and through mixing with magnesia, unsaturated resin, sodium fluorosilicate, tortoise shell, water glass and triethanolamine, mixing with water, molding and heating. Using the waste foamed polystyrene is favorable to environment protection. The composite polystyrene brick has light weight and high heat insulating performance and may be used in wall, roof heat insulating layer and green house.

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.