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38results about How to "Suitable for purification" patented technology
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Preparation method and application of Cu-SSZ-13 catalyst
InactiveCN107115888AHigh catalytic activityExcellent resistance to high airspeedGas treatmentMolecular sieve catalystsIon exchangeCopper nitrate
The invention provides a preparation method and application of a Cu-SSZ-13 catalyst. The preparation method comprises the following steps: 1) putting raw materials including a silicon source, an aluminum source, a template agent and seed crystals into a mortar, and grinding to form a uniform mixture; 2) feeding the mixture into a reaction kettle and crystallizing; after cooling, washing and drying, roasting to obtain an Na-SSZ-13 molecular sieve carrier; 3) preparing an ammonium nitrate solution, and adding into the Na-SSZ-13 molecular sieve carrier; after carrying out ion exchange, filtering, washing and drying to obtain an NH4-SSZ-13 molecular sieve; 4) preparing a copper nitrate solution and adding into the NH4-SSZ-13 molecular sieve; after carrying out ion exchange, filtering, drying and roasting to obtain the Cu-SSZ-13 catalyst. The Cu-SSZ-13 catalyst prepared by the preparation method has excellent NH3-SCR (Selective Catalytic Reduction) catalytic activity, N2 selectivity, hydrothermal stability, and H2O and SO2 positioning resisting properties, and is applicable to purification of tail gas of diesel vehicles.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Monolithic catalyst for simultaneously removing formaldehyde, carbon monoxide and ozone at room temperature
InactiveCN101797475AStrong moisture resistanceGood stabilityDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsChemistryOxidation state
The invention discloses a monolithic catalyst for simultaneously removing formaldehyde, carbon monoxide and ozone at room temperature, and relates to the fields of catalysis and environmental protection. The monolithic catalyst is characterized in that: honeycomb ceramics or porous foam metal is taken as a carrier; doped alpha-MnO2 which is supported first is taken as a first active ingredient; and platinum-gold with coexistence of an oxidation state and a metallic state, which is supported later, is taken as a second active ingredient. The doped alpha-MnO2 is characterized in that: silver in a metallic state and an oxidation state simultaneously exists in pores of which the size is about 0.46*0.46nm<2>, and titanium ions (Ti4+) replace partial lattices of the alpha-MnO2; and the Ag and Ti respectively account for 0 to 20 weight percent and 0 to 50 weight percent of the alpha-MnO2. The weight ratio of a platinum-gold alloy to the doped alpha-MnO2 is 0 to 10 percent, wherein the platinum accounts for 0 to 100 weight percent of the platinum-gold alloy. The monolithic catalyst can efficiently and stably remove the formaldehyde, carbon monoxide and ozone pollutants in air simultaneously in actual environment at normal temperature and normal pressure.
Owner:李溪 +2
Method and device for efficiently removing organic matters in sewage by using periphyton
InactiveCN104944681AWays to improve immobilizationImprove removal efficiencyMultistage water/sewage treatmentFiltrationSoil organic matter
The invention relates to a method and device for efficiently removing organic matters in sewage by using periphyton. The method comprises the following steps: (1) design of spiral periphyton reactor; (2) spiral pipe pretreatment; (3) fixation process of periphyton; (4) design of periphyton treatment system; (5) design of integrated spiral periphyton reaction system; and (6) control of key environmental conditions. The device used by the method is an integrated spiral periphyton reaction system. The adsorption, absorption, biodegradation and other mechanisms of the periphyton are utilized and combined with the traditional precipitation and filtration processes to form the integrated spiral periphyton reactor. The device has the characteristics of high efficiency, small occupied area and high economic and environmental efficiency when being used for purifying organic pollutants in sewage or low-concentration low-C / N-ratio sewage.
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI
Method for preparing anionic polyacrylamide
InactiveCN103980406AImprove processing efficiencyStable structureWater/sewage treatment by flocculation/precipitationSewageSewage treatment
The invention discloses a method for preparing anionic polyacrylamide. The method comprises the following steps: coating silane-modified ferroferric oxide in the anionic polyacrylamide polymerization process, and obtaining the anionic polyacrylamide with magnetism. In the using process, the anionic polyacrylamide in early state can be flocculated with suspended solids in water to form alumen ustum, but in the later separation process, because magnetic ferroferric oxide nanoparticles are coated in the anionic polyacrylamide, the formed alumen ustum has a certain magnetism during sewage treatment; and in the separation process, the flocculate is rapidly separated from the water by utilizing acting force of an external magnetic field. Moreover, the whole process can be continuously operated and the sewage treatment efficiency is greatly improved.
Owner:SUZHOU UNIV
Nano-catalyst for efficiently removing carbon monoxide
InactiveCN102247846AStrong moisture resistanceGood stabilityDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsNano catalystChemistry
The invention discloses a monolithic catalyst for removing carbon monoxide at room temperature, and relates to the field of catalysis and environmental protection. The monolithic catalyst is characterized in that: honeycomb ceramic or a porous foam metal is taken as a carrier, doped cryptomelane MnO2 which is loaded first is taken as a first active ingredient, and platinum-gold with coexisting oxidation state and metallic state which is loaded later is taken as a second active ingredient. The doped cryptomelane MnO2 is characterized in that: metallic state silver and oxidation state silver coexist in ducts with the dimensions of about 0.46*0.46nm<2>, and titanium ions (Ti<4+>) substitute partial lattice sites of the cryptomelane MnO2; and Ag and Ti account for 0 to 20 weight percent and 0 to 50 weight percent of alpha-MnO2 respectively. A platinum-gold alloy accounts for 0 to 10 weight percent of the doped cryptomelane MnO2, wherein platinum accounts for 0 to 100 weight percent of the platinum-gold alloy. The monolithic catalyst can efficiently and steadily remove carbon monoxide pollutants in the air in the normal-temperature normal-pressure real environment.
Owner:SHANGHAI NIUYI NEW ENERGY TECH
A method for preparing high-purity glycyrrhizic acid
The invention relates to a method for preparing high-purity glycyrrhizic acid, comprising the following steps: (1) preparation of monoammonium glycyrrhizic acid, (2) preparation of crude glycyrrhizic acid, (3) polyamide column chromatography to remove key impurities 1 , (4) recrystallization to remove key impurity 2, (5) polyamide purification of glycyrrhizic acid. The characteristics of the present invention are: the present invention prepares high-purity glycyrrhizic acid, the column chromatography is efficient and convenient, and the separation capacity is large, which is suitable for complex sample separation and purification; polyamide and cation exchange resin can be regenerated and reused by simple methods, reducing costs, The equipment used is simple and suitable for industrial production; high-purity glycyrrhizic acid can be obtained through polyamide adsorption column purification. It has the following advantages: high product purity, the content of glycyrrhizic acid reaches more than 99.5 percent; the cation exchange resin and polyamide can be reused, and the cost is low; the operation is simple; the equipment investment is small, the environment is friendly, and it is suitable for industrial production.
Owner:XIAN RUILIAN NEW MATERIAL CO LTD
Hydrogen-sulfide-removed modified active carbon and preparation method thereof
InactiveCN103566876ABig gapImprove adsorption capacityOther chemical processesDispersed particle separationCopper oxideSilicon dioxide
The invention relates to hydrogen-sulfide-removed modified active carbon, which is prepared from the following raw materials in parts by weight: 110 to 120 parts of active carbon, 15 to 20 parts of copper sulfate, 8 to 10 parts of zeolite, 8 to 10 parts of diatomite, 5 to 7 parts of active aluminum oxide, 20 to 25 parts of orange peel, 2 to 4 parts of nanometer silicon dioxide, 3 to 5 parts of copper oxide superfine powder, 4 to 5 parts of modified diatomite and an appropriate amount of water. The copper sulfate is used for modifying the active carbon, so that hydrogen sulfide can be rapidly removed; due to use of zeolite, modified diatomite, active aluminum dioxide, copper oxide superfine powder and the like, the effects of rapidly desulphurizing, absorbing bacteria and deodorizing can be realized; and since the orange peel is used as a material of the active carbon, the produced active carbon has a large pore size, high adsorption capability and reduced cost, is suitable for the livestock farm and can be used for purifying automobile exhaust.
Owner:BENGBU HUAFANG FILTER
Biologic filtering method for simultaneously desorbing NOX (Nitric Oxide), SO2 and PM2.5 in aerobic environment
ActiveCN103721561ASimple process equipmentReduce energy consumptionCombination devicesAir quality improvementProcess equipmentEngineering
The invention discloses a biologic filtering method for simultaneously desorbing NOX (Nitric Oxide), SO2 and PM2.5 in an aerobic environment. A water distribution tank of a circulation nutrient liquid is arranged at the bottom of a bio-trickling filter; the nutrient liquid and fume which is subjected to wetcleaning by using a washing tank are delivered to the top of the bio-trickling filter; the fume carries oxygen; subsequently, the nutrient liquid and the fume pass through a filler layer to which a biologic film is adhered in the bio-trickling filter; fillers are polypropylene multi-surface hollow spheres; NOx and SO2 in the fume are absorbed by liquid phases when passing through the filler layer, and are subsequently absorbed and utilized by microorganisms in the aerobic environment; the PM2.5 in the fume is intercepted by the nutrient liquid and the biologic film; the treated gas is discharged from the bottom of the bio-trickling filter. According to the biologic filtering method, a composite microorganism system is adopted, so that the NOx, SO2 and MP2.5 in the fume can be simultaneously desorbed, and moreover, the problem of inhibiting of the oxygen in the environment is solved, and the biologic filtering method has the advantages of simple process equipment, low energy consumption, low operation cost, small secondary pollution, and the like.
Owner:SOUTH CHINA UNIV OF TECH
Closed air purifying and washing device
ActiveCN102764575ALengthGood processing effectDispersed particle separationContinuous operationTreatment effect
The present invention provides a closed air purifying and washing device. The washing device comprises an air collecting system, a washing system, a settlement discharge system, a clean air delivery system and an automation control system. The washing system comprises a washing tank, a stirring shaft, a stirring paddle, an inner wall guide plate, a liquid level height equilibrium reflux tank, an air cap, a main motor, a reducer and a liquid turbidity window. The main motor, the reducer and the mixing shaft are coaxial; the air collecting system and the sediment discharge system are respectively connected to the bottom and the lower side wall of the washing system; a detergent rationing supply system is arranged on the top of the washing system; the clean air delivery system is connected to the top of the washing system; and a washing wastewater circulatory system is located on the inner upper part of the washing tank of the washing system. The detergent is supplied to the washing system through the detergent rationing supply system; and the washing wastewater circulatory system maintains stable and continuous operation of the washing system. The device has advantages of good treatment effect on polluted air, small amount of water consumption, simple structure and low cost.
Owner:天融环科(北京)科技有限公司 +2
Light filament induced micro-nano bubble generation device
The invention relates to a light filament induced micro-nano bubble generation device. A laser light source device comprises a light source part and a laser focusing part. That laser light emitted bythe light source part is focused by the laser focusing part and then a plasma light filament is formed in a laser light filament part through a beam control device. The laser light filament part adopts that nanometer metal particles are uniformly doped in that solution, after the laser produces light filaments in the solution, a supercontinuous spectrum is generated in that solution, the nano metal particle surface plasmas are subjected to resonance excitation by supercontinuous spectrum, a liquid solution is instantaneously gasified at a rapid rise in temperature, so that a large number of cluster-like micro-nano bubbles are formed, a scanning and detecting device in the bubble imaging section is connected to an imaging display device by a computer, a feedback control unit sets the laserpower parameter by the control software, and feeds back the bubble size data detected by the analysis scanning detection device to the beam control device, and adjusts the power of the laser by the beam control device to change the bubble size, density, and generation rate.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Method for extracting ammonium sulfate from synthetic mother liquor containing phenol
InactiveCN102060311AImprove qualitySuitable for purificationAmmonium sulfatesWastewaterP-hydroxyphenylglycine
The invention belongs to the technical field of waste water treatment, in particular to a method for extracting ammonium sulfate from mixed mother liquor containing the ammonium sulfate, phenol and p-hydroxyphenylglycine. The method comprises the following steps: 1, adding the synthetic mother liquor containing the phenol to a heating kettle, and concentrating the mother liquor with steam under normal pressure; 2, transferring the concentrated mother liquor for the first time obtained in step 1 to a cooling kettle for cooling, adding methanol, stirring and filtering, soaking and washing the obtained filter cake with the methanol, and then drying to obtain the ammonium sulfate; and 3, placing the primary filtrate obtained in step 2 in the heating kettle, depressurizing and concentrating the filtrate with steam until the methanol is distilled out until no liquid flows, and reusing the methanol in step 2. The method provided by the invention is simple in operation, and the obtained ammonium sulfate has high quality, thus the method is very applicable to purifying the ammonium sulfate in the mixed mother liquor containing the phenol and the ammonium sulfate.
Owner:HENAN NEWLAND PHARMA
Nitrogen-phosphorus co-doped porous carbon material and preparation and application methods thereof
ActiveCN113428856AImprove adsorption capacityEnhanced electrosorption performanceCarbon compoundsWater contaminantsPorous carbonPhytic acid
The invention provides a preparation method of a nitrogen-phosphorus co-doped porous carbon material for electrically adsorbing chloride ions, which comprises the following steps: S1, adding an aqueous solution of persulfate and a phytic acid solution into an aqueous solution of m-phenylenediamine to carry out polymerization reaction, and then sequentially separating, cleaning and drying a product obtained by the polymerization reaction to obtain a nitrogen-phosphorus co-doped porous carbon material, thus preparing the poly(m-phenylenediamine)@phytic acid particles; s2, carrying out activation treatment on the poly(m-phenylenediamine)@phytic acid particles twice at the temperature of 600-1000 DEG C in an N2 atmosphere in a manner of after the first activation treatment, cleaning and drying the product of the first activation treatment, performing second activation treatment on the dried substance, and then cleaning and drying the product of the second activation treatment to obtain the nitrogen and phosphorus co-doped porous carbon material, wherein in the first activation treatment and the second activation treatment, the material is activated by adopting potassium bicarbonate and ammonium dihydrogen phosphate respectively. The nitrogen and phosphorus co-doped porous carbon material prepared by the preparation method disclosed by the invention can be used for improving the electric adsorption performance on chloride ions.
Owner:CENT SOUTH UNIV
Desulfurization and denitrification system and technology thereof
InactiveCN109107347ASuitable for purificationLess investmentCombination devicesGas treatmentLiquid wastePhysical chemistry
The invention relates to the technical field of chemical engineering, in particular to a desulfurization and denitrification method. The desulfurization and denitrification method comprises the following steps: (1) preprocessing boiler smoke through smoke preprocessing equipment; (2) sending preprocessed smoke into a sprinkling tower by an induced draft fan, wherein absorption liquid is the mixedliquid of sodium chlorite and sodium hypochlorite; (3) discharging after the smoke is subjected to sprinkling, washing, foam absorption and filtering in the sprinkling tower; (4) pumping out the absorption liquid in a circulating pool, regularly sending to waste liquid processing equipment to be subjected to recovery processing. The desulfurization and denitrification method has the beneficial effects that wet-method desulfurization, denitrification and dust removal are integrated, the desulfurization and denitrification method is suitable for lower-temperature smoke purification, and investment is reduced; the sprinkling tower adopts four-level purification, including sprinkling, washing, foam absorption and filtering, desulfurization and denitrification efficiency is high, the dust removal efficiency of the desulfurization and denitrification method can be 96% or above, desulfurization efficiency can be 99% or above, and a purification effect is good; the sprinkling tower adopts spiral sprinkling purification, a liquid and gas mixing degree is high, reaction is sufficient, a liquid-gas ratio is low, L / Q is about 3, and purification efficiency is high.
Owner:湖南长清蓝节能环保科技有限公司
A composite waste gas treatment machine
ActiveCN106422621BAvoid enteringAvoid problems such as poor purification effectCombination devicesGas treatmentParticulatesUltraviolet lights
Owner:SUZHOU HAISILE WASTE GAS TREATMENT EQUIP
Method and equipment for efficiently removing organic matter in sewage by using Zhoucong biology
InactiveCN104944681BImprove removal efficiencySuitable for purificationMultistage water/sewage treatmentFiltrationSmall footprint
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI
Method for separating and purifying anti-allergic components in perilla leaves
ActiveCN110755476AReduce the impactReduce extraction timeImmunological disordersPlant ingredientsAllergic antiHyaluronidase
The invention discloses a method for separating and purifying anti-allergic components in perilla leaves. The method comprises the steps that first, fresh perilla leaves are subjected to normal temperature shade dryness, crushing and sieving, solvent soaking and enhanced mass transfer method for extraction to obtain crude perilla anti-allergy components; then thin layer chromatography is used fordetermining an elution solvent, silica gel column chromatography and dextran gel column chromatography are used for purifying perilla anti-allergic crude extract components to obtain a high anti-allergic activity perilla extract with the hyaluronidase inhibition rate being as high as 89.76%. The method for separating and purifying the anti-allergic components in perilla leaves has the advantages of simple operation, less use time, high yield, significant activity and good reproducibility of results, and is suitable for the separation and purification of most plant active substances.
Owner:ZHONGBEI UNIV
Haze collection unit based on corona discharge and haze-removal apparatus
ActiveCN107433229AEffective adhesionImprove collection efficiencyHuman health protectionElectrode constructionsDrive shaftCorona discharge
The invention discloses a haze collection unit based on corona discharge and a haze-removal apparatus. The haze collection unit comprises a main fixed frame, bias pole plates, collection pole plates, an annular coating layer, an upper driving shaft, a lower driving shaft, a transmission band, a driving mechanism, and an infiltrate mechanism; the haze particles with negative electricity is introduced into a space between the bias pole plate and the collection pole plate, the haze particles with the negative electricity move to the collection pole plate, and are absorbed to the pole plate coating layer coating the outer surface of the pole plate, the driving mechanism drives the upper driving shaft and the lower driving shaft to move the annular coating layer, so that the whole annular coating layer is in an infiltrate state, so that the haze particles with the negative electricity are attached. The method uses a wet-type dynamic dust collecting and water circulation cleaning scheme to increase the collection efficiency of the haze particles, and reduces the generation of secondary entrainment phenomenon and back corona phenomenon; the field intensity between the collection pole plate and the bias pole plate is increased by increasing the quantity of the collection pole plate and the bias pole plates, and the volume of the haze collection unit is reduced.
Owner:HUAZHONG UNIV OF SCI & TECH
A treatment device for exhaust gas purification
ActiveCN106268145BAvoid enteringAvoid problems such as poor purification effectCombination devicesSolidificationParticulatesExhaust fumes
Owner:SUZHOU HAISILE WASTE GAS TREATMENT EQUIP
Multi-effect spraying agent special for automobile air conditioner filter element and preparing method thereof
InactiveCN110117446AExtended replacement cycleQuick removalAntifouling/underwater paintsPaints with biocidesAutomobile air conditioningFilm-forming agent
The invention discloses a multi-effect spraying agent special for an automobile air conditioner filter element and a preparing method thereof. The spraying agent is prepared from an inorganic nanometer active material, a dispersing agent, an aldehyde eliminating factor, an odor removing agent, a film forming agent and the balance deionized water. A mist spraying mode is adopted to make the spraying agent act on the surface of the air conditioner filter element, and a thin film formed by the film forming agent can firmly adhere to the surface of the filter element material in the situation of not influencing air flow and can rapidly dry; the aldehyde eliminating factor contained in the spraying agent slowly releases and can rapidly remove formaldehyde in air, the odor removing agent can beadopted to rapidly remove odors in an automobile, and the organic nanometer active material can be adopted to inhibit growing bacteria, molds and the like in humid air. The multi-effect spraying agentintegrates multiple effects, can directly and firmly act on the air conditioner filter element, rapidly remove aldehyde and odors and prevent the bacteria and the molds, is particularly suitable forpurifying the air environment inside the automobile, and can also greatly prolong the replacing period of the air conditioner filter element.
Owner:SHANXI KEQI TECH CO LTD
A kind of coordination polymer porous material maf-49 and its preparation method and application
ActiveCN105037403BGood thermal and chemical stabilityImprove purification efficiencyProductsGas treatmentNatural gasTrigonal crystal system
The invention provides a coordination polymer porous material MAF-49, a preparation method therefor and an application thereof. A chemical formula of MAF-49 is [Zn(batz)], wherein batz<2-> represents an anion obtained by deprotonation of a ligand H<2>batz with a formula of bis(5-amino-1H-1,2,4-triazol-3-yl)methane; the porous material MAF-49 is crystallized in a space group P3<1>21 in the trigonal crystal system, wherein a is equal to 9.6963 angstroms, and c is equal to 20.126 angstroms; and the MAF-49 is a three-dimensional framework structure with a one-dimensional channel, wherein the three-dimensional framework structure is formed by connecting the batz<2-> ligands and three four-coordination Zn<2+> ions. The porous material MAF-49 has the characteristics of good stability, high ethane adsorption capability and the like, can be used for collecting ethane in natural gas, purifying methane in landfill gas, and recycling ethylene in an ethylene epoxidation product, and also can be used for simply and conveniently separating an ethylene-ethane mixture with low energy consumption to obtain ethylene with a purity of 99.95%+. Therefore, the porous material MAF-49 has a very high industrial application value.
Owner:SUN YAT SEN UNIV
Monolithic catalyst for removing benzene series at low temperature, and preparation method thereof
InactiveCN110639551ASuitable for purificationReduce differential pressureGas treatmentDispersed particle separationAlkali metalMaterials science
The invention belongs to the technical field of environmental protection, and particularly relates to a monolithic catalyst for removing benzene series at a low temperature, and a preparation method thereof. The monolithic catalyst is formed by firstly loading doped hollandite type MnO2, used as a first active component, on a honeycomb ceramic used as a carrier, and then loading silver-palladium used as a second active component. In the doped hollandite type MnO2, copper ions (Cu<2+>) replace a part of lattice sites of MnO2, and an alkali metal (K<+> or Na<+>) exists in pore channels with thesize of about 0.46 * 0.46 nm<2>; and a weight ratio of the Cu to the MnO2 is 0.5-10%, a weight ratio of the alkali metal to the MnO2 is 0.5-10%, a weight ratio of the silver-palladium alloy to the doped MnO2 is 1-10%, and a weight ratio of the silver to the silver-palladium alloy is 0-100%. The monolithic catalyst can be used for efficiently, stably and simultaneously removing various volatile organic pollutants at the low temperature.
Owner:FUDAN UNIV
A kind of network polymer based on naphthalene tube and its application in drinking water purification
ActiveCN112062955BSuitable for purificationImprove adsorption capacityOther chemical processesWater contaminantsPolymer sciencePolymer adsorbent
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
A kind of airtight air purification washing device
InactiveCN102764575BEasy to handleImprove washing effectDispersed particle separationAir cleaningTurbidity
Owner:天融环科(北京)科技有限公司 +2
Distillation type sewage treatment device
InactiveCN101973594AImprove purityReduce volumeWater/sewage treatment by heatingElectric heatingElectricity
The invention provides a distillation type sewage treatment device, which comprises a water sucking structure, a sewage container, an evaporation container, an electric heating wire, a steam guide pipe, a pure water container and a cooling container, wherein the evaporation container is arranged above the sewage container and connected with the sewage container by the water sucking structure; the water sucking structure can guide the sewage in the sewage container to the electric heating wire arranged in the evaporation container; the steam guide pipe is led out of the evaporation container to the pure water container; the pure water container is arranged in the cooling container filled with cold water; and the evaporation container is sealed except the part provided with the water sucking structure and the steam guide pipe. The treatment device can finish primary filtration and secondary filtration of the sewage at the same time so that the treated sewage reaches high purity; and the treatment device has a small volume and a simple structure, and is suitable for small-scale sewage purification.
Owner:褚礼政
Device for removing NOx (Nitrogen Oxide), SO2 (Sulfur Dioxide) and PM2.5 (Particulate Matter 2.5) simultaneously
InactiveCN103111184BSimple process equipmentReduce energy consumptionUsing liquid separation agentAir quality improvementParticulatesProcess equipment
Owner:广州市新望谷环保科技有限公司
Purification and separation method of sucrose fatty acid ester
PendingCN113651862ASuitable for purificationReasonable production processEsterified saccharide compoundsSugar derivativesAlkaline earth metalSucrose
The invention discloses a purification and separation method of sucrose fatty acid ester, which comprises the following steps: dissolving a sucrose fatty acid ester crude product in a mixed solution of an organic solvent and water, and stirring the mixture at 60 DEG C to obtain a sucrose fatty acid ester crude product solution; adding a weak acid solution, adjusting the pH value to 7, stirring, and carrying out suction filtration to remove insoluble substances; transferring the sucrose fatty acid ester filtrate into a beaker, adding a sodium chloride aqueous solution with the mass fraction of 5%, stirring, adding alkaline earth metal salt, stirring the solution, performing standing treatment, carrying out suction filtration to remove the alkaline earth metal salt, and discharging a water layer; and standing the filtrate at 63 DEG C, washing the organic phase with distilled water twice, discharging the water layer, carrying out rotary evaporation on the obtained solution to remove the organic solvent, freeze-drying, and grinding the solution into powder to obtain the sucrose ester refined product. The method has the advantages that the process is simple and convenient, side reactions are few, the product content and recovery rate are high, sucrose in the sucrose ester crude product can be recycled, the amount of three wastes is small, and treatment is easy.
Owner:GUANGXI UNIV
Fiber-level high purity silicon tetrachloride continuous azeotropy lightness removing rectification method
ActiveCN101564600BBroad requirementsReduce energy consumptionHalogenated silanesFractional distillationFiberProcess engineering
Owner:TIANJIN UNIV
Ground chestnut rhizopus culture medium and preparation method thereof
InactiveCN105199970AGrowth inhibitionSuitable for growthFungiMicroorganism based processesInorganic saltsRhizopus
The invention discloses a ground chestnut rhizopus culture medium and a preparation method thereof and relates to a rhizopus culture medium and the preparation method thereof. The ground chestnut rhizopus culture medium comprises the following components in mass percent: 5 to 25 percent of ground chestnut, 0.1 to 0.2 percent of chloramphenicol, 1.7 to 2.7 percent of agar, 0.2 to 0.5 percent of NaNO3, 0.2 to 0.5 percent of K2HPO4, 0.1 to 0.2 percent of KCl, 0.1 to 0.2 percent of MgSO4.7H2O, 0.1 to 0.2 percent of FeSO4, 1.5 to 2.5 percent of glucose and 68 to 91 percent of water. The preparation method comprises the following preparation processes: heating chestnuts with boiling water, airing and grinding into ground chestnut for later use; performing high temperature sterilization and cooling for later use; adding the components into a container in sequence and dissolving; heating until boiling, and then adding the agar; measuring the PH value of solution in the container to be 6.2(positive and negative 0.2); cooling to be lower than or equal to 42 DEG C for use. According to the ground chestnut rhizopus culture medium disclosed by the invention, by utilizing the characteristic that the ground chestnut is easy to powder and is rich in nutrition and by matching various inorganic salts, not only can biomass growth be ensured but also the growth of infectious microbes can be restrained.
Owner:SHENYANG UNIV
Enclosed air purifying and washing device
InactiveCN102755812BEasy to handleImprove washing effectDispersed particle separationWastewaterAir cleaning
Owner:天融环科(北京)科技有限公司
A composite shallow superposition plant growth module and its application
ActiveCN104944591BSimple structureFlexible constructionClimate change adaptationSustainable biological treatmentGrowth plantSewage
The invention discloses a composite shallow-layer superimposed plant growth module used for sewage treatment artificial wetlands, which is divided into three layers on the vertical direction of the module by partition boards, which are respectively the first layer, the second layer and the third layer; the module The four sides are fixed with pillars, and the pillars are surrounded by nets. Wetland plants are planted on each layer of the module; self-floating plants are planted on the first layer; aquatic plants with stable roots and long stems are planted on the second layer, and the plants pass through the side nets The root system is fixed on the partition of the second layer; the third layer is planted with aquatic plants with developed root system and strong oxygen-secreting capacity, and the plants pass through the side net, and the root system is fixed on the partition of the third layer. The invention also discloses the application of the module in sewage treatment. The three-layer wetland plants in the module of the invention rationally utilize the physical characteristics and living habits of different plants, and greatly improve the sewage treatment effect of the plants in the module. The invention can greatly save land and is suitable for purifying large-flow surface water.
Owner:SOUTHEAST UNIV
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