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Energy-saving consumption-reducing technique for preparing haydite by co-disposing polluted soil and desilting sediment
ActiveCN102173850APromote healthy developmentLow running costCeramicwareExpanded clay aggregateWater content
The invention relates to an energy-saving consumption-reducing environment-friendly method for preparing haydite by co-disposing municipal massive solid wastes, which comprises the following steps: directly mixing polluted soil and polluted desilting sediment (without energy-consuming drying), adding a conditioner, granulating, and firing at 900-1200 DEG C for 15-40 minutes. The test indicates that the prepared haydite product has the following properties: the bulk density is 500-900 kg / m<3>, the cylindrical compressive strength is 5.0-10.0 Mpa, and the water absorptivity is 4.8-9.2%; and the leaching toxicities of typical heavy metals are as follows: Cu<0.26 mg / L, As<0.03 mg / L, Cd<0.0002 mg / L, and Hg<0.0001 mg / L. The method provided by the invention fully utilizes the water-content complementarity of the polluted soil and sewage reservoir sediment as well as the characteristic of mutual catalytic degradation of heavy metal pollutants and organic pollutants, implements energy saving and consumption reduction in the technical field of traditional techniques for preparing haydite from solid wastes, lowers the cost and secondary pollution in solid waste disposal industry, enhances the properties of the solid waste haydite, and widens the application field of the solid waste haydite.
Owner:TIANJIN YIMING ENVIRONMENTAL TECH CO LTD
Artificial wetland system taking oyster shell-waste brick-zeolite as composite filler
InactiveCN103304033AIncrease concentrationEasy loadingSustainable biological treatmentBiological water/sewage treatmentConstructed wetlandBrick
The invention discloses an artificial wetland system taking oyster shell-waste brick-zeolite as composite filler. The invention relates to a sewage treatment device, and discloses an artificial wetland ecological treatment device applicable to the treatment of various sewages such as domestic wastewater, livestock and poultry breeding wastewater and landfill leachate. The system disclosed by the invention comprises a vertical undercurrent artificial wetland device and wetland filler, wherein the wetland filler is implemented in a large particle size grading difference 'obverse and reverse particle size mixing' filling mode and taking oyster shell, waste bricks and zeolite which are large in specific surface area, good in nitrogen and phosphorus adsorption capacity and high in volume of organism holding, so that the sustainable, efficient and stable operation of an artificial wetland ecosystem is ensured. The artificial wetland system disclosed by the invention has the advantages of low cost, low energy consumption, high nitrogen and phosphorus removal efficiency, small land-occupied area, simple structure, convenient operation management and the like, is not easy to jam, and can be combined with ecological construction and urban greening functions.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
Amendment for inhibiting brackish water irrigated soil polysalt
InactiveCN101096598AMitigate or reduce the immediate hazardImprove adsorption capacityAgriculture tools and machinesOrganic fertilisersSlagOrganic base
The invention discloses a making method of amendment to inhibit brackish water irrigation soil polysalt, which comprises the following steps: (1)blending vinegar slag and grass peat or weathered lignite evenly to ferment; making the turf typed organic base or weathered lignite typed organic base; (2)mixing alta-mud and phosphogypsum to make the alta-mud typed mineral base or blending zeolite or phosphogypsum evenly to make zeolite typed mineral base; (3)blending ferric nitrate, potassium silicate, manganese sulfate and aluminium sulfate evenly to make particle forming base; (4)mixing the turf typed organic base or weathered lignite typed organic base and alta-mud typed mineral base or zeolite typed mineral base evenly; adding the particle forming base gradually to mix evenly; accelerating the salt ion of hazarded plant or broken soil structure to be drained out of soil body along irrigation water; fitting for soil adsorption and fixation; improving the salt ion of soil structure.
Owner:TIANJIN INST OF AGRI RESOURCES & ENVIRONMENTAL
Thiolated bentonite for remedying heavy metal polluted soils and preparation method thereof
ActiveCN107011918ALow costGood value for moneyAgriculture tools and machinesOrganic fertilisersThiolSodium Bentonite
The invention relates to the technical field of heavy metal polluted soil controlling and remedying, and in particular relates to thiolated bentonite for remedying heavy metal polluted soils and a preparation method thereof. The preparation method comprises the steps of mixing bentonite, ethanol solution of 3-mercaptopropyl trimethoxy silane, sodium silicate with water, stirring, reacting, washing, filtering and drying to obtain the thiolated bentonite. The obtained thiolated bentonite is low in price, high in adsorption rate, low in desorption rate and large in adsorption capacity. The preparation method has the advantages that the using amount of thiol modifier is reduced by a large margin, so that the cost is reduced; and the modification is carried out on original bentonite, so that the modifying process is simplified.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY +1
Laser half-cutting machine for crystal silicon solar battery cell
ActiveCN106312337ACause damageEasy to useSemiconductor/solid-state device manufacturingMetal working apparatusLaser scanningEngineering
The invention provides a laser half-cutting machine for a crystal silicon solar battery cell. The laser half-cutting machine for the crystal silicon solar battery cell comprises a case, a laser scanning system, two machining tables and two rotation conveying devices. A working table plate is arranged on the top part of the case; the laser scanning system is arranged on the working table plate; the two machining tables are arranged in parallel and are arranged on the working table plate at an interval; the two rotation conveying devices are arranged on the working table plate; each rotation conveying device comprises a rotation driving device and two mechanical arms; each rotation driving device is fixed to one side of the corresponding machining table; one ends of the two mechanical arms are fixedly connected with driving ends; a taking-out sucking disc is fixed to the other end of one mechanical arm; a fission sucking disc module is fixed to the other end of the other mechanical arm; each rotation driving device drives the two mechanical arms to rotate, so that each taking-out sucking disc and each fission sucking disc module move to positions above the corresponding machining table. The laser half-cutting machine for the crystal silicon solar battery cell has the advantages of convenience in use, high machining efficiency due to continuous machining, and capability of avoiding damage on an anti-reflection film on the front face of the battery cell during a cell breaking process.
Owner:WUHAN DR LASER TECH CORP LTD
Aluminum alloy metal part grinding and polishing device
ActiveCN112775777AEffectively fixedEasy to polishGrinding carriagesGrinding drivesStructural engineeringMechanical engineering
The invention belongs to the technical field of aluminum alloy machining equipment, and discloses an aluminum alloy metal part grinding and polishing device which comprises a grinding table and an aluminum alloy plate. Two symmetrically-distributed fixing assemblies are arranged at the top of the grinding table. Each fixing assembly comprises a first hydraulic rod, wherein the mounting end of the first hydraulic rod is arranged at the top of the grinding table, a fixing plate is arranged at the output end of the first hydraulic rod, a first electric telescopic rod is arranged on one side of the fixing plate, a first moving plate is arranged at the output end of the first electric telescopic rod, second electric telescopic rods are arranged on the end face of the periphery of the first moving plate, second moving plates are arranged at the other ends of the second electric telescopic rods, first air guide pipes are arranged at one ends of the second moving plates, and suckers are arranged at the other ends of the first air guide pipes. According to the aluminum alloy plate polishing device, through the arrangement of a polishing assembly, the fixing assemblies and a containing plate, the two side faces of an aluminum alloy plate can be ground at a time, the aluminum alloy plate can be ground and pre-cleaned, and the grinding precision is controlled.
Owner:JIANGXI DONGYANG ALUMINUM CO LTD
Water purifying agent of self-forming block carbon carrier immobilized microorganisms and preparation method thereof
ActiveCN107473404AGood compatibilityImprove contact effectWater treatment compoundsWater contaminantsCompression moldingMicroorganism
The invention belongs to the technical field of biological activated carbon and biological water purifying agents, and particularly relates to a water purifying agent of self-forming block carbon carrier immobilized microorganisms and a preparation method thereof. Self-forming block porous carbon is placed in a culture medium, compound bacterial strains are inoculated into the culture medium at the same time, and after oscillating co-culture and drying, the microbial water purifying agent is prepared; because porous blocks are formed in the synthesis process of carbon carriers, the compression molding process of the carbon carriers is not involved in the preparation of the microbial water purifying agent, the procedures are simplified, and the cost is saved; meanwhile, the self-forming block carbon has hydrophilicity, and the effect of adsorbing and fixing the microorganisms is improved in the co-culturing process of the carbon and the microorganisms; the water purifying agent has the advantages of achieving a double purification functions of adsorption and degradation and being stable in effect, easy to precipitate and treat and the like, and is very suitable for the large-scale treatment of anaerobic wastewater for culture.
Owner:INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
Method for immobilizing effective microorganisms (EM) during solid fermentation
InactiveCN103146672ASolve the problem of easy falling offAvoid cumbersome workmanshipOn/in organic carrierBiological water/sewage treatmentFiberEffective microorganism
The invention discloses a method for immobilizing effective microorganisms (EM) during solid fermentation. The method is used for preparing immobilized EM through four steps including (1) preparation of a carrier, (2) preparation of fermented materials, (3) preparation of EM microbial inoculum through fermentation, and (4) preparation of immobilized solid EM microbial inoculum. Compared with the prior art, the method has the advantages that 1 operation time is shortened, work efficiency is improved, production cost is saved, effects are better than those of the mode that single adsorption immobilization is used in the prior art, and a problem that adsorption immobilization bacteria are easy to drop in the prior art is solved; and 2 EM preparation prepared by combining the adsorption of the carrier and bonding of a culture medium enables the bacteria to be tightly fixed on carrier fibers, and partial population superiority can be formed in a water body, so that action time of water quality is long, and effects are obvious.
Owner:GUANGXI INST OF FISHERIES
Coal denitration agent
InactiveCN106345269AStable and strong adsorptionImprove denitrification effectGas treatmentDispersed particle separationZinc Acetate DihydratePollution
The invention discloses a coal denitration agent, which belongs to the technical field of coal processing and is specifically made of the following materials: activated carbon, graphene, urea, slaked lime, barium succinate, zinc palmitate soap, alginate, methyl cellulose, Modified attapulgite, calcium carbonate, titanium dioxide, calcium stearate, magnesium acetate, zinc acetate. The denitrification agent prepared by the invention has a denitrification removal rate as high as 95%, has obvious effects, does not produce secondary pollution, has a long effective use time, and has good popularization value.
Owner:马鞍山科宇环保设备股份有限公司
Glass substrate grinding method and grinding device
InactiveCN102267087AAvoid pollutionEasy to absorb and fixLapping machinesGrinding work supportsEngineeringBuffer solution
PURPOSE: A glass substrate polishing method and a polishing device thereof are provided to prevent the pollution of a rim portion of a non polishing surface due to the polishing solution. CONSTITUTION: A glass substrate(G) polishing method comprises the following steps. The dry preventive solution is sprayed to the table section(12) in which the entire area of a non polishing surface is sucked and fixed from a first nozzle to a table. The buffer solution is sprayed about the table in the section in which the rim portion of the non polishing surface is absorbed from a second nozzle. The entire section of the non polishing surface is absorbed and fixed through the dry preventive solution in the table. The rim part of the non polishing surface is absorbed and fixed through the buffer solution in the table. The polishing liquid is provided to the polishing surface. The polishing surface is polished with a polishing jig.
Owner:ASAHI GLASS CO LTD
Adsorption plate for cadmium in soil and application of adsorption plate
ActiveCN104056850ACreate pollutionMaterials are readily availableContaminated soil reclamationSoil heavy metalsCadmium Cation
The invention provides an adsorption plate for cadmium in soil, and a preparation method and application of the adsorption plate. Sodium alginate-corncob mixing gel solutions with different concentrations are configured by using sodium alginate and modified corncob, and are respectively added into an inner-layer circular inner cavity, an intermediate-layer annular inner cavity and an outer-layer annular inner cavity in an annular cylindrical mold according to the descending sequence of the concentration of the corncob; a plurality of pillars parallel to a center shaft are uniformly arranged in the direction, perpendicular to the bottom plane of the mold, of the inner surfaces of the bottom surfaces of the three inner cavities or the inner surface of a top cover of the mold; after the mold is filled, the top cover of the mold covers the mold, and the mold is cooled and sized, and then is released to obtain a sodium alginate-corncob annular porous adsorption plate. The invention further provides the application of the adsorption plate prepared by using the method to adsorption of cadmium in soil. The method is quickly effective, easy and convenient to operate, low in treatment cost and free from secondary pollution; the adsorption plate has an obvious adsorption fixing effect on cadmium of different concentration in soil; a novel technical method is provided for remediation of the soil polluted by cadmium.
Owner:HANGZHOU NORMAL UNIVERSITY
Method for installing adsorbable rolling ball demonstration device
InactiveCN102254472AEasy to absorb and fixIncrease motivationEducational modelsWhiteboardEngineering
The invention relates to a method for installing an adsorbable rolling ball demonstration device, and in particular relates to a method for installing an adsorbable rolling ball demonstration device which can be used for children education. The method for installing the adsorbable rolling ball demonstration device comprises the following steps of: installing rail connectors on a support body; connecting the installed rail connectors to form a continuous channel; and continuously arranging the continuous channel so that a rolling ball can continuously roll from the head end of the rail to the tail end of the rail under the action of gravity, wherein the rail connectors have magnetic substances, so that the rail connectors are in magnetic connection with the support body. The adsorbable rolling ball demonstration device is used for adsorbing and fixing the rails in different shapes on a white board; various types of rails are matched through connection, splicing and assembly, and therefore, the rolling ball can fall from a height along the rail. The device disclosed in the invention is a novel educational tool for children, which can be spliced and assembled, on the basis of the traditional adsorbable device. With the device, interactive games with children in a plurality of scenes can be carried out, and the games can be integrated in stationary education activities.
Owner:BEIJING HONGEN EDUCATION TECH
Filter screen for industrial circulating water
InactiveCN108635934AQuick disassembly and replacementQuick clean upSpecific water treatment objectivesTreatment involving filtrationPulp and paper industryMagnet
The invention provides a filter screen for industrial circulating water. The filter screen comprises an annular baffle, a framework, protective cloth, a magnet strip, a support plate, sliding bars, afilter net I, a filter net II, opening grooves and connecting rods, wherein the framework is fixed at the lower end of the annular baffle, the opening grooves are machined in the left, right, front and rear sides in the annular baffle, the connecting rods are arranged at the front parts in the opening grooves, the protective cloth is connected to the front ends of the connecting rods, the magnet strip is assembled at the lower end of the protective cloth, the support plate is mounted at the lower end of the magnet strip and fixed below the front side of the framework, the filter net I and thefilter net II are arranged in the framework, and the sliding bars are assembled on the left and right sides of the filter net I and the filter net II. By means of the design, the double-layer filtering function is realized. The filter screen is convenient to use and operate, realizes the double-layer filtering function and is convenient to dismount, replace and clear.
Owner:解晓莉
Method for preparing water-retaining agent for selectively fixing heavy metal in soil
InactiveCN103725290AImprove timelinessAvoid interferenceAgriculture tools and machinesContaminated soil reclamationFreeze-dryingOxygen
The invention relates to a method for preparing a water-retaining agent for selectively fixing heavy metal in soil. The method comprises steps of adding 1.0g of common water-retaining agent into water solution containing 0.5-10.0mmol of ferric salt, shaking so that iron ions are absorbed into the common water-retaining agent, then adding strong reducing agent to reduce the ferric salt into nano iron, vacuum stoving or freeze drying to obtain the water-retaining agent. According to the method, by utilizing the protective action of the common water-retaining agent, zero valent nano iron easy to be oxidized by air is wrapped so as to be prevented from oxidizing, after the common water-retaining agent absorbs water, the oxygen in air and nano iron react so as to generate high-activity ferric oxide or hydrogen oxide easy to adsorb heavy metal ions. The water-retaining agent capable of fixing heavy metal is especially applicable to heavy metal polluted soil, can prevent nano material from being interfered by humic acid and clay in soil, improves the effect in adsorbing and fixing heavy metal ions, has good water retention effect, and has important value in remediation of heavy metal polluted soil and agriculture application.
Owner:HUNAN AGRICULTURAL UNIV
Biological sensor for detecting tetracycline on basis of aptamer specificity and preparation method of biological sensor
InactiveCN105223262AImprove conductivityHigh catalytic activityMaterial electrochemical variablesAptamerAntibiotic Y
A biological sensor for detecting tetracycline on the basis of aptamer specificity comprises a screen-printed electrode of a three-electrode system in an electrolyte. The screen-printed electrode specifically comprises a work electrode, a carbon electrode and an Ag / AgCl electrode. The surface of the work electrode is provided with ferriferrous oxide / reduced graphene oxide-sodium alginate compound layer and a tetracycline aptamer layer. The carbon electrode serves as a counter electrode. The Ag / AgCl electrode serves as a reference electrode. The electrolyte is an acetate buffer solution with thionine as an electrochemical probe. By means of the electro-chemistry signal amplification function of ferriferrous oxide / reduced graphene oxide and the specific binding function of an aptamer to a substrate, tetracycline can be sensitively, accurately and specifically detected. The prepared biological sensor of the aptamer has the advantages of being low in price, simple in preparation method, little in reagent dosage, good in reproducibility and stability and the like. Meanwhile, the method can also be used for detection of other antibiotics, is an electro-chemistry testing method with development potential, and is suitable for quick detection of tetracycline in food safety.
Owner:SHANGHAI JIAO TONG UNIV
Coating agent reinforcing agent and preparation method and application thereof
ActiveCN105165825AImprove hydrophilicityImprove adhesionPlant growth regulatorsBiocideAbscisic acidPolyvinyl alcohol
The invention relates to a coating agent reinforcing agent. The coating agent reinforcing agent is prepared from, compound particles of zeolite and attapulgite, chitosan, oligosaccharide, abscisic acid and polyvinyl alcohol, wherein the compound particles formed by the zeolite and the attapulgite are subjected to ammonia water treatment and high-energy electron beam irradiation. The coating agent reinforcing agent can improve the adhesion ability of a coating agent on crop seeds, reduce loss of effective components of the coating agent during storage or after sowing and improve the water retention performance of the crop seeds.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Animal hair-like polyester filament cosmetic brush hair and production process thereof
PendingCN112725926AHas antibacterial effectImprove connection strengthFibre typesBristlePolymer scienceAntibacterial agent
The invention relates to the technical field of make-up tools, and particularly discloses animal hair-like polyester filament cosmetic brush hair and a production process thereof. The animal hair-like polyester filament cosmetic brush hair is prepared from the following raw materials in parts by weight: 60-70 parts of polyester resin, 3-6 parts of nano pearl powder, 2-6 parts of titanium dioxide, 19-25 parts of an antibacterial agent and 1-2 parts of a lubricating agent; and the antibacterial agent is prepared from the following raw materials in parts by weight: 5-10 parts of polyester resin, 5-8 parts of a graphene oxide / silver compound, 2-3 parts of organic bentonite, 1-3 parts of chitosan oligosaccharide and 2-4 parts of nano bamboo charcoal powder. The preparation method comprises the steps of mixing, melt spinning, shredding, hair peak making and after-finishing. The antibacterial agent is added into the raw materials of the cosmetic brush hair, so that the antibacterial performance of the cosmetic brush hair is improved.
Owner:深圳市布兰卡化妆用具有限公司
Plate detaching tool used during integrated ceiling mounting
ActiveCN108643534AImprove adsorption capacityImprove stabilityBuilding constructionsSuction forceEngineering
The invention discloses a plate detaching tool used during integrated ceiling mounting. The plate detaching tool comprises a transfer box, two vacuum pumps located at the top of the transfer box and afixed handle located between the two vacuum pumps. Two vacuum suction cups are arranged at the bottom of the transfer box; a level ruler is mounted on one side of the transfer box, and a pressure-relief button is mounted on one side of the transfer box; air suction rods are arranged inside the vacuum pumps; and an air suction handle is arranged below the fixed handle and connected with the fixedhandle through return springs. The plate detaching tool has the beneficial effects that through the two manual vacuum pumps, the suction force of the vacuum suction cups can be improved by sucking airin the transfer box, and thus the stability of detaching of a ceiling plate is improved; and the ceiling plate is subjected to air suction through a springback structure so that air suction work canbe conveniently conducted, using is convenient, the air suction efficiency is improved, and suction fixing of the vacuum suction cups and the ceiling plate can be facilitated.
Owner:林婷
Sewage treatment use titanium dioxide/feather no-weaving composite needling filtration material and preparing method thereof
InactiveCN106731227AImprove thermal stabilityImprove tensile strengthMembrane filtersFiltration separationPolyesterPotassium persulfate
The invention discloses a sewage treatment use titanium dioxide / feather no-weaving composite needling filtration material. The material is prepared from, by weight, 50-70 parts of feather fiber, 20-30 parts of polyester fiber, 24-30 parts of metacrylic acid ester, 2-5 parts of potassium persulfate, 3-6 parts of sodium hydrogen sulfite, 3-7 parts of 2% of hydroquinone solution, a proper amount of deionized water, a proper amount of ethyl alcohol, a proper amount of acetic acid buffer solution, 3-5 parts of KH-570, 15-25 parts of hydroxyapatite powder, 0.5-1 part of N, N'-methylene bisacrylamide, 0.5-1 part of emulgator, 1-2 parts of photoinitiator TPO, 7-12 parts of butyl titanate, 2-5 parts of glacial acetic acid and 1-4 parts of concentrated nitric acid. According to the sewage treatment use titanium dioxide / feather no-weaving composite needling filtration material, metacrylic acid ester is applied to graft the modified feather fiber, heat stability and tensile property of the no-weaving material are improved, besides, ultraviolet light is utilized to graft and load hydroxyapatite on the feather fiber after modification treatment, and adsorption to heavy metal ions in sewage of the filtration material is improved.
Owner:怀宁县菲豹服饰有限公司
Preparation method of modified silica filler for ink absorbing layer coating of photographic paper
ActiveCN107674457AEasy to absorb and fixGood ink absorptionDuplicating/marking methodsPigment treatment with macromolecular organic compoundsPhotographic paperSilicon dioxide
The invention discloses a preparation method of a modified silica filler for an ink absorbing layer coating of a photographic paper. The preparation method comprises (1) preparing a nano-silica dispersion solution, (2) modifying the dispersion solution and (3) preparing a finished product. The nano-silica filler is modified through a special method so that the surface characteristics are improved,the filling effect is improved, adsorption and fixing effects on the ink adsorption layer coating and the photographic paper surface are effectively enhanced, a base coating is avoided, the whole inkadsorption and gloss of the coating are improved and a good use value is obtained.
Owner:安徽文峰新材料科技股份有限公司
Binary organic/inorganic nano-composite phase change energy storage material and preparation method thereof
InactiveCN104293305APhase transition temperature is suitableHigh energy storage densityHeat-exchange elementsHigh energyVolumetric Mass Density
The invention discloses a binary organic / inorganic nano-composite phase change energy storage material and a preparation method thereof. The material is prepared by mixing lauric acid / lauryl alcohol fusion mixture and modified montmorillonite, wherein the weight of the modified montmorillonite is 1-1.8 times that of the lauric acid / lauryl alcohol fusion mixture. The preparation method of the material comprises the following steps: fusing lauric acid and lauryl alcohol in anhydrous ethanol, and drying to obtain a fusing mixture; mixing the fusing mixture with a NaCl solution and triethanolamine modified montmorillonite in water; and mixing, distilling and drying to obtain the binary organic / inorganic nano-composite phase change energy storage material. The composite phase change energy storage material has the advantages of proper phase change temperature, high energy storage density, good stability, low manufacture cost and strong practicality, and can be applied to building energy conservation and other fields.
Owner:NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
Device for preparing fertilizer by using excess sludge and agricultural and forestry waste
InactiveCN107056552AShorten composting cycleThe organic matter is completely degradedBioloigcal waste fertilisersWaste based fuelFertilizerNutrient
The invention discloses a device for preparing a fertilizer by using excess sludge and agricultural and forestry waste. The device comprises a mixing system, a fermentation composting system, a screening system, a granulation and drying system, an exhaust gas treatment system, and a wastewater backflow system. Compared with the prior art, by using water, aerobiotic microorganisms and anoxic microorganisms in the excess sludge and cellulose in the agricultural and forestry waste, the device achieves organic matter degradation, pathogenic bacterium killing and heavy metal passivation of the excess sludge and the agricultural and forestry waste through the aerobiotic fermentation, anoxic fermentation and anaerobic fermentation of the excess sludge and the agricultural and forestry waste; the obtained product is thorough in degradation, good in air permeability, high in humus content, comprehensive and rich in nutrient and low in bacterium and virus content, and can serve as a farmland fertilizer or a soil conditioner. The device is simple in structure, stable and reliable in operation, high in production efficiency, and free of odor gas and secondary pollution.
Owner:SHAANXI UNIV OF TECH
Passivator for arsenic-cadmium composite contaminated soil as well as preparation method and application method thereof
ActiveCN110484262AAchieve adsorptionAchieve fixationOther chemical processesContaminated soil reclamationCarbon compositesPollution
The invention belongs to the field of soil pollution treatment, and discloses a passivation remediation agent for arsenic-cadmium composite contaminated soil, and a preparation method and applicationmethod thereof. Wormcast is utilized to enrich organic matters, adsorption and complexing immobilization of cadmium are realized, and iron (hydroxide) oxide formed by zero-valent iron in soil is utilized to generate adsorption precipitation with arsenic, so that synchronous passivation of arsenic and cadmium is realized. In addition, the wormcast can remarkably improve the soil quality, and comprehensive treatment and remediation can be conducted on the arsenic-cadmium composite contaminated soil. On one hand, zero-valent iron serving as a strong reducing agent is extremely easy to oxidize toform amorphous iron (hydroxide) oxide, and more adsorption sites are provided for arsenic and cadmium; on the other hand, the wormcast provides more organic matters for soil, increases cation exchangecapacity, increases the pH of the soil, and facilitates adsorption and immobilization of cadmium and activity reduction. Besides, the wormcast and iron are partially combined to form an iron oxide-organic carbon composite, so that soil carbon immobilization is facilitated, and the soil quality is improved.
Owner:ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
Dustproof device for building wall surface drilling
InactiveCN107803955AImprove sealingAvoid flyingWorking accessoriesStone-like material working toolsPunchingEngineering
The invention provides a dustproof device for building wall surface drilling and belongs to the building field. The dustproof device for building wall surface drilling comprises a circular truncated cone cover body; the circular truncated cone cover body is vertically thorough, and the upper end caliber of the circular truncated cone cover body is smaller than the lower end caliber; a drill bit isvertically placed in the middle of the circular truncated cone cover body in a penetrating manner; the left end and the right end of the outer side wall of the circular truncated cone cover body areeach horizontally and fixedly connected with a connection rod; and a threaded rod vertically penetrates the end head position of each connection rod, and is fixedly connected with the corresponding connection rod through an engaged thread. A lower end port of the circular truncated cone cover body of the dustproof device is attached to the punched wall surface position, then the drill bit is madeto be drilled into a wall surface to punch a hole, and the circular truncated cone cover body prevents powder generated during hole drilling from flying out; the circular truncated cone cover body isa transparent body, so that a user can clearly see the punching condition of the drill bit; and when the lower end port of the circular truncated cone cover body is attached to the wall surface, the threaded rods are rotated and moved towards the wall surface, a suction cup fixedly connected to the end head position of each threaded rod is made to be pressed and adsorbed on the wall surface, and therefore the circular truncated cone cover body is fixed, and hole drilling is convenient.
Owner:湖北盛荣建设集团有限公司
Biochar for heavy metal adsorption and preparation method thereof
InactiveCN111530421AEasy to absorb and fixOther chemical processesWater contaminantsFerrous sulfate ironSulfate
The invention discloses biochar for heavy metal adsorption. The production raw materials of the biochar for heavy metal adsorption are corn straw, ferrous sulfate and potassium permanganate, and the preparation method comprises the following steps: step 1, weighing ferrous sulfate, potassium permanganate and biochar, putting into a crucible, adding 50ml of deionized water, putting into an ultrasonic device, and carrying out ultrasonic oscillation so as to facilitate full modification; step 2, putting the raw materials in the step 1 into a centrifuge, separating for 5 minutes under the condition of 4000r / min, and discarding the supernatant; step 3, putting the sample obtained in the step 2 in a muffle furnace at 400 DEG C for 4 hours; and step 4, after the pyrolysis is finished and the sample is cooled to the room temperature, taking out the solid product and grinding with a 40-mesh sieve and bagging for later use. The corn stalk carbon is used as a raw material, the biochar is modifiedby utilizing potassium permanganate and a ferrous sulfate modifier, the biochar is subjected to modification treatment through secondary orthogonal rotation design, and the heavy metal adsorption andthe fixation capacity of the biochar is to be improved.
Owner:INNER MONGOLIA UNIV FOR THE NATITIES
Preparation method of epoxy resin-based electromagnetic shielding material
Owner:FOSHAN WANHE NEW ENERGY TECH CO LTD
Automobile data recorder with good fixing effect
InactiveCN112356779AEasy to fixEasy to absorb and fixVehicle componentsStructural engineeringMechanical engineering
The invention relates to an automobile data recorder with a good fixing effect. The automobile data recorder comprises a main body, a connecting rod, a fixing rod and a fixing mechanism. The connecting rod is arranged on the main body, the fixing rod is connected with the main body through the connecting rod, the connecting rod is hinged to the fixing rod, and the fixing mechanism is arranged at the end, away from the connecting rod, of the fixing rod. According to the automobile data recorder with the good fixing effect, fixing of the device is achieved through the fixing mechanism, camera shooting and recording are achieved by operating the main body, and compared with an existing fixing mechanism, the fixing mechanism achieves pressing of a lip edge of a suction cup and pumping of air in the suction cup through linkage of a pressing assembly and an air pumping assembly so that double fixing of the suction cup is achieved; and a better adsorbing and fixing effect is achieved on the suction cup, the linkage adopts a pure mechanical structure so that the stability of the device is improved, and the service life of the device is prolonged.
Owner:南京蒙仕通讯科技有限公司
Heavy metal agricultural soil remediation method
InactiveCN110903829AEfficient repairSimple structureOther chemical processesOrganic fertilisersSoil scienceSoil remediation
The invention relates to the field of soil remediation, in particular to a heavy metal agricultural soil remediation method. The heavy metal agricultural soil remediation method disclosed by the invention is characterized by including: (1) preparing a soil remediation agent, which comprises the following components by weight: 35-50 parts of biochar; 8 to 20 parts of bentonite; and 5-10 parts of acuring agent; (2) mixing the soil remediation agent with heavy metal contaminated soil according to a weight ratio of 1:10-20 uniformly to obtain contaminated soil containing the soil remediation agent; and (3) spraying water mist to the contaminated soil containing the soil remediation agent to make the water content reach 30-50%, and then performing standing at room temperature for 5-7d to obtain improved soil. Directed at different heavy metals in soil, a method combining two curing agents is adopted for remediation, and the two curing agents supplement each other and act together, thus reaching an excellent soil remediation effect.
Owner:宁波丰科源农业科技有限公司
Method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism
InactiveCN105728454ASolve the impact of soil environmental constraintsEasy to absorb and fixContaminated soil reclamationMicroorganismBacterial strain
The invention provides a method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism. The method comprises the steps that the heavy metal contaminated soil is jointly restored by adding a passivator and functional bacteria into the heavy metal contaminated soil, and the functional bacteria are bacterial strains which are obtained by screening aboriginal bacteria of the heavy metal contaminated soil and have adsorption capacity and tolerance to heavy metal. The method of chemical passivation-microorganism joint restoring is simple, economical and safe, the heavy metal contaminated soil can be effectively restored, and the soil fertilizer efficiency can be improved while no new contaminator is introduced.
Owner:UNIVERSTAR SCI & TECH SHENZHEN
A kind of coating agent enhancer and its preparation method and application
ActiveCN105165825BImprove hydrophilicityImprove adhesionBiocidePlant growth regulatorsAbscisic acidPolyvinyl alcohol
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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