2247results about How to "Cause secondary pollution" patented technology

The invention relates to a high-strength hydrogel and a preparation method thereof. The preparation method comprises the steps of directly mixing a polymer, a monomer, an initiator, a cross-linking agent and water once, dissolving all the substances to form a homogeneous solution under a certain simulation condition, and then initiating and polymerizing by using heat or light to obtain the high-strength hydrogel, wherein the polymer is needed for preparation of the hydrogel and used for forming a first double network of a dual-network hydrogel; the monomer is used for polymerizing and forming a second double network of the dual-network hydrogel; the initiator is used for initiating the monomer to be polymerized; the cross-linking agent is used for performing cross-linking reaction in a monomer polymerizing process so as to form the second double network. According to the preparation method, a one-pot method is used for preparing the high-strength hydrogel, so that the method is simple and practicable; the prepared high-strength hydrogel has the characteristics of high strength and high toughness; a tensile strength of the gel is 0.6-1.2MPa, a tensile modulus is 100-200 KPa and a tensile strain reaches 1000-2680%; the prepared high-strength hydrogel can be widely applied to the fields of tissue repair, artificial organ, drug sustained release, sensors and the like.

The invention provides a method for preparing aluminum oxide and other products from aluminiferous materials such as bauxite, high iron bauxite, alunite, kaoline, alumina, fly ash, coal gangue, aluminum ash, nepheline, clay and the like. The method comprises the following steps: (1) crushing, grinding and mixing the aluminiferous materials with ammonium sulfate and then roasting; (2) dissolving the roasted product (clinker aggregate) in water, and filtering to obtain aluminum ammonium sulfate solution and filter residues; (3) carrying out deferrization, aluminum deposition or recrystallization on the aluminium ammonum sulfate solution with ammonia to prepare aluminum oxide, and meanwhile, recycling the ammonium sulfate; (4) preparing silicon dioxide from the filter residues, and taking the remaining residues containing ferrum as the raw material for ironmaking. The method is suitable for treating various aluminiferous materials, has the advantages of simple technical process, simple equipment, no emission of solid, liquid and gas wastes, and no secondary pollution, and realizes the high-added-value green complex utilization of the aluminiferous materials such as bauxite, high ironbauxite, alunite, kaoline, alumina, fly ash, coal gangue, aluminum ash, nepheline, clay and the like.

The invention discloses a method for resource recovery and classification utilization of urban domestic wastes, which at least comprises the following steps of: a magnetic separation step, a waste cutting step, a elutriation flotation step, a waste extrusion dehydration step, an anaerobic treatment step and a sludge deposition concentration step; scrap iron is separated by the magnetic separationstep for the recovery and utilization of the scrap iron; anaerobic organic matter is crushed by the waste cutting step; pasty organic matter and block non-anaerobic wastes are thoroughly separated bythe elutriation flotation step so as to allow the pasty anaerobic organic matter to enter a biogas generation pool or tank for an anaerobic reaction and to allow the clean non-anaerobic wastes to be extruded, dehydrated and dried for individual treatment, and the waste decrement is above 90%; after elutriation, the left 10% non-anaerobic wastes are prepared into fuel oil by a cracking reaction; or are recycled through screening with no screening difficulty being caused by dust and organic matter containing in the wastes; or are delivered into a gasifier for fuel gas production, which preventsthe energy consumption of water-containing organic matter during waste incineration treatment, and greatly increases the thermal efficiency of waste treatment.

The invention discloses a synthesizing method of cationic polyacrylamide 'water-in-water' emulsion, which is characterized by the following: adopting inorganic solution as dielectric with specific viscosity number is 30-90ml/g low-molecular cationic polymer solution as stabilizer; copolymerizing free radical of cationic monomer with double bond and non-ion monomer to form the product with grain size less than 1um; fitting for disposing urban effluent, oil-field effluent and paper-making domain.

The procedure of the recycling method is to cut the used lithium ion battery and take out the positive plate, process the positive plate with heating process to remove the bond between the aluminum foil and the positive pole material, by means of the mechanical or ultrasound shaking, the aluminum foil and the positive pole material are separated, process the positive pole material with the high-temperature handling, the content of the element in the positive pole material is analyzed. Mixing the lithium compound based on the supplement of the cobalt manganese or the nickel. After high-temperature and grinding processing, the positive pole material with excellent performance is recycled.

The invention relates to environmental pollution plant restoration, specifically to a screening method for heavy metal enriching /accumulating plant. 1)choosing experimental field 2) determining the screening object 3) determining the polluted object 4) potted plant screening experiment for heavy metal The invention chooses weeds as screening object, potted plant experiment , wild sampling and analysis, plot experiment as main means, screen plant for plant restoration. The invention is economic, highly effective, high ecological safety, wide adaptability,

A kitchen garbage disposal method is characterized by including steps of 1, sterilizing, deodorizing, and adding hydrolyzing protease into kitchen waste; 2, screening and crushing the kitchen garbage, sorting wastes such as glass and ceramics which cannot be disposed from deodorized garbage automatically, crushing the residual waste by a crusher; 3, performing solid and liquid separation, separating suspended matters with thickness of 2mm at least and solids and squeezing to dewater to form a tailing product, and discharging oil water into an oil and water separator; 4, performing oil and water separation to separate heavy oil, light oil, sewage and sludge and the like in waste water of the kitchen garbage, feeding the separated oil, sewage and sludge into an oil storage barrel, a sewage treatment device and a sludge collection barrel respectively; 5, purifying sewage by details of feeding the separated sewage into a sewage purifying system which is provided with air flotation and reverse osmosis devices; and 6, treating the tailing solid products by details of hydrolyzing the tailing solid subcritically, subjecting dynamic fermentation to the tailing solid products for two to three days after subcritical hydrolysis treatment, and finally obtaining an organism modifier for soil.

The invention relates to flame-retardant synthetic paper. The flame-retardant synthetic paper comprises polypropylene resin, polyethylene resin, an inorganic filler, a coupling agent, an antistatic agent, a lubricant and a coloring agent. The flame-retardant synthetic paper is characterized in that the flame-retardant synthetic paper further comprises a flame retardant. Raw materials and the partsby weight thereof are as follows: 100PHR of polypropylene resin, 20-90PHR of polyethylene resin, 50-300PHR of inorganic filler, 1-8PHR of coupling agent, 1-5PHR of antistatic agent, 0.5-5PHR of lubricant, 5-20PHR of coloring agent and 5-35PHR of flame retardant. Blending, mixing, rubberizing, molding by a calendar, leading out by a leading roller, embossing, cooling, corona treatment and windingare carried out on all the raw materials of the flame-retardant synthetic paper for preparing a product. The flame-retardant synthetic paper has the flame-retardant function and is difficult to burn.Even the flame-retardant synthetic paper is incinerated in a high-temperature incinerator, the flame-retardant synthetic paper can not produce harmful gas, not cause secondary pollution to society andhuman beings and be in line with the requirements of environmental protection.

The invention provides a robot for cleaning vertical props, which is composed of a climbing part and a cleaning part. The climbing part comprises two pairs of mechanical arms (3) which are used to clamp tightly rod bodies in turn, a crank and connecting rod mechanism which is used to produce expanding movements and contracting movements, a cam linking mechanism which is used to adjust the expanding movements and the contracting movements, and a motor which is used to provide power for the expanding movements and the contracting movements above, wherein the two pairs of mechanical arms, the crank and connecting rod mechanism, the cam linking mechanism and the motor are evenly installed on a guiding bar (1) which is used to substitute a human body framework, and thereby the robot which imitates climbing movements is formed. The cleaning part comprises two pairs of cleaning brushes (5) which are installed on the guiding bar and always embayed around the cleaning vertical props, injectors (4) which are arranged respectively on upper cleaning brushes, wherein the cleanings of the vertical props can be realized under the effects of water currents which are injected by the injectors and scrubs of the cleaning brushes, and sewage water after being cleaned is flowed into a sewage water collecting ring (15) which is on the bottom of the vertical props along the vertical props. The invention has the advantages of compact structure, convenient use, low energy consumption, high efficiency and non-environmental contamination, and the invention saves labor and material resources. The invention can be used for cleaning operations of the vertical props or tilting bars.

The invention provides a novel sludge curing treatment agent. The curing treatment agent comprises a curing agent A and a curing conditioner B, wherein the curing agent A comprises the following components in percentage by weight: 40-60% of MgO, 5-20% of magnesium chloride salt, 10-20% of SiO2, 10-30% of CaO, 0.1-4% of dehydrating agent and 0-20% of fly ash; the curing conditioner B comprises the following components in percentage by weight: 20-40% of H3PO4, 30-50% of NH4H2PO4 and 20-40% of oxalic acid; the curing agent A accounts for 0.5-10% of the total amount of sludge in treatment by mass; and the curing conditioner B accounts for 0-5% of the total amount of sludge in treatment by mass. By adopting the sludge curing treatment agent provided by the invention to treat the sludge with relatively high water content and particularly water content over 80%, the sludge can be cured generally in 1-2 days, the curing time is short, and the water content is reduced to about 30% 7 days later; after the curing, the water content of the sludge is low; and the sludge after the curing treatment can be subjected to landfill on site or applied to roadbed, greening, earthing, ecological restoration and the like, thereby avoiding secondary pollution to environment.

The invention discloses efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing and a preparation method thereof. The packing is prepared from the following raw materials in parts by weight: 45-65 parts of pure iron powder, 10-25 parts of cast iron powder, 2-8 parts of graphite powder, 5-15 parts of active carbon powder, 2-10 parts of copper powder, 2-10 parts of manganese powder, 2-10 parts of aluminum powder, 2-10 parts of fine wood bits, 1-6 parts of sodium silicate, 1-6 parts of sodium borate, 2-6 parts of pyrite dust and 5-15 parts of an adhesive. The efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing disclosed by the invention is prepared by taking heterogeneous metal alloy with high potential difference as a catalyst and using a high-temperature micropore roasting technology and has the characteristics of heterogeneous metal and ferric-carbon integration, micropore framework type alloy structure, large specific surface area, low density, strong activity, high current density and the like; organic wastewater is treated so that COD, ammonia nitrogen and total phosphorus can be efficiently removed, the chroma can be reduced, the biodegradability can be improved, the treatment effect is extremely stable, and the phenomena of packing passivating, hardening and the like caused in the operation process can be avoided.

The invention relates to a detection technology of copper ions, and in particular relates to a preparation method of a reduced carbon quantum dot containing calcium alginate gel for detecting copper ions. The preparation method of the carbon quantum dot containing calcium alginate gel for detecting the copper ions comprises the following steps of: preparing fluorescent carbon quantum dots; neutralizing the fluorescent carbon quantum dots, adding sodium borohydride into the neutralized fluorescent carbon quantum dots to perform reduction; mixing deionized water with the neutralized fluorescent carbon quantum dots at equal volume, and adding sodium alginate into the mixture to obtain a sodium alginate sol; and spraying a calcium ion solution to the surface of the sol or soaking the sol into the calcium ion solution to perform crosslinking, and drying to obtain the calcium alginate gel. By using the characteristics that the carbon quantum dots have fluorescent characteristics, the fluorescence of the carbon quantum dots is enhanced after reduction, and the calcium alginate can enhance the fluorescent characteristics of the carbon quantum dots, when the copper ions are detected, the cost of an adopted fluorospectro photometer is low, the sample preparation and treatment steps are simple and easy to operate, and the detection sensitivity is high, so that the calcium alginate gel can be widely used for detecting the copper ions.

The invention discloses a preparation method for magnetic biological carbon by one-step synthesis. The preparation method comprises the following steps: air-drying a biomass raw material under a natural condition and then storing for later use, and adding a dried and crushed biomass raw material into a ferric salt solution; slowly stirring a mixed solution, then, regulating a pH (potential of hydrogen) value with an NaOH solution, then, continuously stirring, then, standing until the biomass raw material absorbs the ferric salt solution to reach a saturation state, performing suction filtration to remove free water in the biomass raw material, pyrolyzing a suction filtration-treated biomass raw material in a pyrolyzing furnace to make carbon, and introducing an inert shielding gas into the pyrolyzing furnace to obtain the magnetic biological carbon. According to the preparation method disclosed by the invention, carbonization and magnetization are combined together to synthetize the magnetic biological carbon by one-step pyrolysis; meanwhile, different magnetic biological carbon materials can be obtained by changing the shielding gas (nitrogen or carbon dioxide); an effect of removing typical heavy metal pollutants in a water body is obvious, and moreover, the typical heavy metal pollutants can be separated and recovered from the water body as well so as to protect the environment from secondary pollution.

The invention provides a method for treating organic waste gas by combining photocatalysis and microorganisms. Simultaneously, the invention also discloses a device of the method for treating the organic waste gas by combining the photocatalysis and the microorganisms and application thereof. The method for treating the organic waste gas by combining the photocatalysis and the microorganisms comprises the steps of physical dust removal, photocatalyst catalytic oxidation, microorganism purification, and the like, and can effectively eliminate total suspended particulate matters in the organic waste gas and volatile organic compounds in waste gas. The device of the method for treating the organic waste gas by combining the photocatalysis and the microorganisms is applied to treating industrial organic waste gas, and is particularly applicable to treating the organic waste gas in various industrial organic waste gas emission workshops.

The invention discloses a multifunctional environment-friendly digital terminal. The multifunctional environment-friendly digital terminal comprises a dustbin body, wherein the dustbin body comprises an environment-friendly solar power generating and supplying device, a self-sealing device, a garbage compressing device, an automatic sterilizing/smell-removal/disinfection device, an advertisement rolling device, a citizen assistance seeking and alarming device and a convenient taxi hailing device, wherein an optical energy and solar energy combined board is arranged at the upper part of the dustbin body; a garbage throwing opening is formed in one side surface of the dustbin body, and a dustbin door is arranged on the other side surface of the dustbin body; an assistance seeking button and a taxi hailing button are arranged at the upper part of the garbage throwing opening; a liquid leakage hole is formed in the lower surface of the dustbin body; a liquid collecting tank is arranged at the lower part of the liquid leakage hole; a liquid drainage pipe is arranged on one side of the liquid collecting tank; a base is arranged at the lower part of the dustbin body. The multifunctional environment-friendly digital terminal has the advantages of being simple in structure, convenient to use, and capable of avoiding secondary pollution, reducing odor diffusion, increasing the utilization rate of the dustbin, automatically and periodically spraying to sterilize, automatically carrying out early warning, having a dynamic advertising effect, providing assistance seeking, alarming and intelligent taxi hailing for the citizens.

At present, researchers do the research of reasonable utilization of chrome-containing leather shavings all the time; however, the leather shavings of leather making enterprises are difficult to treat in batch. The invention provides an environment-friendly collagen fiber leather substrate which is characterized by comprising an intermediate-layer fiber web, a surface-layer fiber web tightly connected on the upper surface of the intermediate-layer fiber web, and a bottom-layer fiber web tightly connected on the lower surface of the intermediate-layer fiber web, wherein the surface-layer fiber web and the bottom-layer fiber web respectively comprise the components by mass percentage of: 90 to 97 percent of collagen fibers, 3 to 10 percent of polylactic acid bi-component fibers; the intermediate-layer fiber web is made of polylactic acid bi-component fibers; the weight of the surface-layer fiber web and the weight of the bottom-layer fiber web are both 30 to 150 grams per square meter; and the weight of the intermediate-layer fiber web is 10 to 30 grams per square meter. The non-woven synthetic leather substrate prepared by using collagen fiber extracted from leather leftovers has good simulation performance, avoids secondary pollution to the environment, and is beneficial to the follow-up coating of PU (polyurethane).

The invention provides a slow release fertilizer suitable for integration of water and fertilizer. The slow release fertilizer is a nanocapsule slow release fertilizer formed by using chemical fertilizers as core materials and using slowly soluble polymers as wall materials and can be dispersed in water to form a colloidal solution and achieve the aims of slow release and controlled release. The invention further provides a preparation method of the slow release fertilizer. Capsule wall materials of the slow release fertilizer, namely slowly soluble polymers with opposite charges, are mixed and then carry out polymerization reaction and coat the core materials, and the materials are solidified by a crosslinking agent and are filtered and dried, thus obtaining the nanocapsule slow release fertilizer. The slow release fertilizer can be dispersed in water to form the colloidal solution and can be used for irrigation together with water. The capsule wall materials are the slowly soluble polymers, can be slowly dissolved in soil to achieve the aim of controlled release and can not cause secondary pollution to the soil.

The invention discloses a preparation method of a magnetic core-shell alginate microsphere adsorbent. The preparation method comprises the following steps: preparing two parts of sodium alginate solution, wherein one part is shell layer solution, and dichloromethane and nanometer ferroferric oxide are added into the other part and uniformly mixed to obtain nuclear layer solution; and respectively injecting the shell layer solution and the nuclear layer solution into the outer layer and the inner layer of a stainless steel coaxial needle head, jetting the shell layer solution and the nuclear layer solution into a receiving device filled with calcium chloride solution under high-pressure electrostatic jetting conditions by utilizing high-pressure electrostatic spinning equipment, stirring, filtering, then, immersing the microsphere in metal salt solution, stirring, filtering, and drying to prepare the magnetic core-shell alginate microsphere adsorbent. The magnetic core-shell alginate microsphere adsorbent has the adsorptive property of an alginate gel microsphere adsorbent to a part of anion and also has magnetic property; therefore, an adsorbing material is more convenient and rapid to recycle; the use recovery cost is reduced; the application range is enlarged; and the preparation method can be widely applied to anion adsorption concentration, settling separation and waste water treatment.

The invention relates to a method for preparing magnesia, silicon dioxide and nickel oxide products from lateritic nickel ores. The method comprises the following steps: (1), crushing, grinding and roasting the lateritic nickel ores with ammonium sulfate; (2), dissolving and filtering roasted products; (3), evaporating, condensing and crystallizing filtrate to prepare magnesium sulfate; (4), dehydrating and calcining the magnesium sulfate to prepare magnesia; (5), reacting filter residue with an alkaline solution or molten caustic soda, leaching and filtering the product of reaction to obtain a sodium silicate solution; (6), carbonizing, decomposing, filtering, washing and drying the sodium silicate solution to prepare the silicon dioxide; (7), leaching and filtering the residual filter residue by an ammonium carbonate solution; and (8), distilling ammonia from the filtrate and calcining the filtrate to prepare the nickel oxide. The residual residue is ferric oxide containing a small amount of impurities and can be used as an iron-making raw material or deep processed into a product with a high added value. The method is suitable for processing various lateritic nickel ores, has simple technological process and simple and convenient equipment, does not emit solid, liquid and gas waste or cause secondary pollution and uses lower cost to realize the high added value comprehensive utilization of lateritic nickel ore resources.