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61results about How to "Strong decolorization ability" patented technology
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Water purification active carbon prepared from vegetal castoff and preparation method thereof
ActiveCN101121514ASuitable for removalStrong decolorization abilityOther chemical processesWater/sewage treatment by sorptionAdditive ingredientChemistry
A purified water activated carbon produced from the plant castoff includes the material ingredients of following weight percentage: The percentage of highly processed plant waste residue is between 80 percent and 84 percent. The percentage of non highly processed plant waste residue or a soft coal is between 15 percent and 19 percent. The percentage of a chemical additive is between 1 percent and 5 percent. The present invention makes the best of a lignin, a fibrin and a rudimental sugar in the plant waste residue and takes the ingredients as a backbone. A little chemical substance is used to adjust the hole distribution and the surface functional groups. The produced purified water activated carbon has the following advantages. (1). Strong decoloration capability. The present invention is applicable to the color substance with giant molecule group. (2). Strong deodorization capability. The present invention is especially applicable to the alga and alga poison. (3). Strong capability of removing the harmful and organic residuum (MCA / DCA / THC / MTBE and others). The present invention has also a low cost and a good effect.
Owner:邹炎
Preparation method for jute-based active carbon
InactiveCN102633259AIncrease profitIncrease added valueCarbon compoundsActivated carbonO-Phosphoric Acid
The invention discloses a preparation method for jute-based active carbon, and the method comprises the following steps of: weighing jute fibres or crushed jute stem materials, cleaning and drying, soaking in a beaker filled with a 3-5mol / L phosphoric acid solution, boiling for 3-10 hours in a water bath, adequately penetrating an activating agent into the fibres, then taking out and drying; placing in a vacuum tubular high-temperature sintering furnace, activating to 400-500 DEG C in a nitrogen atmosphere, insulating for 1-3 hours, or placing in a columnar quartz tube, placing in a microwave device, and performing a microwave irradiation reaction with a microwave irradiation power of 100-700 W and an irradiation time of 5-30 minutes in the presence of nitrogen used as protective gas; and cooling to a room temperature, then taking out, acid-washing and repeatedly water-washing until the pH is 6-7, and then drying to obtain the jute-based active carbon. The jute-based active carbon prepared by the method has the advantage of being high in methylene blue adsorption value and activation yield.
Owner:JIANGSU REDBUD DYEING TECH CO LTD
Method for preparing low-cost modified flocculant for waste water treatment
InactiveCN104311743AGood flocculation effectStrong flocculationWater/sewage treatment by flocculation/precipitationWater bathsReaction temperature
The invention discloses a method for preparing a low-cost modified flocculant for waste water treatment. The method comprises the following steps: preparing hydroxymethyl starch; uniformly mixing and stirring the prepared hydroxymethyl starch and deionized water under the environment of constant temperature water bath; adding ceric ammonium nitrate with proper concentration of 1*10<-3> mol / L to the obtained mixture to be used as an initiator; adding acrylamide, the weight of which is 1.5-3 times of that of the hydroxymethyl starch to the mixture; controlling the reaction temperature to be 40-60 DEG C and reaction time to be 1-3 hours under the reaction environment of nitrogen protection so as to obtain a graft copolymer; uniformly mixing and stirring the graft copolymer and the deionized water; adding formaldehyde and a dimethylamine solution to the obtained mixture; controlling the reaction temperature to be 40-60 DEG C and the reaction time to be 1-3 hours; after the reaction is finished, cooling the reaction liquid to room temperature and leading the reaction liquid into an acetone solution for precipitation; washing the precipitate for multiple times to obtain the modified flocculant. The method for preparing the low-cost modified flocculant for waste water treatment, disclosed by the invention, has the advantages of wide production raw material source, low cost, wide pH value application range, excellent flocculating performance and so on.
Owner:刘四
Acinetobacter baumannii, and screening method and application thereof in degradation of azo dye Congo red
ActiveCN103756925AIncrease vitalityStrong decolorization abilityTreatment using aerobic processesBacteriaBiotechnologyMicroorganism
The invention discloses acinetobacter baumannii, and a screening method and an application thereof in degradation of an azo dye Congo red. The stain is named as acinetobacter baumannii YNWH226, is preserved in China general microbiological culture collection center, and has the preservation number of CGMCC No.7922. The invention provides the new acinetobacter baumannii and the application thereof in degradation of the dye. Especially, the acinetobacter baumannii can effectively degrade the azo dye Congo red, has quite good decoloration and mineralization effects on Congo red wastewater, can completely mineralize the Congo red under a simple aerobic condition, and has great significance on governance of dye pollution and study on aerobic degradation of the azo dye.
Owner:广州市泓绿环保科技有限公司
Process for preparing composite floculating agent of aluminium sulfate and slaked lime
InactiveCN1821114AImprove adsorption capacityStrong decolorization abilityWater/sewage treatment by flocculation/precipitationAluminium sulfateWater quality
The present invention discloses the preparation process of composite flocculant of aluminum sulfate and slaked lime, and belongs to the field of water treating technology in environment protection. The composite flocculant is prepared with aluminum sulfate, slaked lime polyacrylamide and vanadium oxide and through mixing, and may have active carbon added for eliminate high chroma in sewage. The composite flocculant can deposit various kinds of pollutant for separation, and test shows that the composite flocculant has CODcr and BOD5 eliminating rate over 60úÑ, and suspended matter and chroma eliminating rate over 90úÑ.
Owner:LVYE ENVIRONMENT PROTECTION SCI & TECH DEV NANPING CITY
Device and method for treating difficultly degraded organic waste water by plasma technology
InactiveCN102351282APromote migrationFast responseWater/sewage treatment by magnetic/electric fieldsWaste water treatment from textile industryDecompositionPlasma technology
The invention discloses a device and a method for treating difficultly degraded organic waste water by a plasma technology. The device is characterized in that the device comprises a low-temperature plasma tank; a side of the low-temperature plasma tank is provided with a water distribution tank; the water distribution tank is communicated with the low-temperature plasma tank by water distribution pipes; the water distribution pipes comprises a main water distribution pipe and multiple perforated water distribution branch pipes; the perforated water distribution branch pipes penetrate transversely the low-temperature plasma tank and are hung with a metal wire mesh; a water collecting tank is arranged in the low-temperature plasma tank and is located below the metal wire mesh; a high voltage pole is arranged in the low-temperature plasma tank; the high voltage pole and the metal wire mesh are arranged at an interval; and the high voltage pole is connected with an external power supply.The method comprises the following steps of assembling all the parts of the device, enabling organic waste water to form a uniform liquid film on the metal wire mesh and to flow down, and carrying out destroy and decomposition of pollutants by active substances produced by high voltage pole discharging. The device has a small floor space, is suitable for large-scale treatment, has a high active free radical yield and can improve treatment effects of difficultly degraded organic waste water.
Owner:NINGBO UNIV
Ecological floating bed for oil-polluted water remediation
ActiveCN105293709AImprove water purification effectImprove adsorption capacityWater contaminantsBiological water/sewage treatmentPlant rootsNonwoven fabric
The invention discloses an ecological floating bed for oil-polluted water remediation. The main frame of the ecological floating bed comprises multiple assembled casing supports. Joints of the casing supports of the main frame are connected to matched PVC casing pipe joints and the joint openings are sealed by silica gel. A modified TiO2 photocatalytic material is carried by waste polyurethane foamed plastic recovered and recycled by an alcoholysis method so that the casing supports are prepared. The bottom of the main frame is wrapped by a non-woven fabric. Wrapped parts of the non-woven fabric and the main frame are tightened by a nylon rope. In each unit, a certain amount of a bottom filler layer and an upper filler layer are uniformly laid. Crops are planted in the upper filler layer. The paddy rice sprout on a floating bed can fully absorb redundant nitrogen and phosphor in water so that plant growth is promoted, the plant roots can promote floating bed bottom microbe growth so that floating bed water purification effects are improved, and the modified fly ash and the non-woven fabric have strong adsorptivity. The floating bed has three technology advantages and improves oil pollutant adsorption degradability and cleaning effects.
Owner:HOHAI UNIV
Method for treating wastewater during production of gallic acid
ActiveCN104086049ALow running costReduce lossTreatment using aerobic processesTreatment with anaerobic digestion processesGallic acid esterEmission standard
The invention discloses a method for treating wastewater during production of gallic acid so as to reach national-level emission standard. The method comprises the following steps: (1) treating wastewater during production of gallic acid through a catalytic microelectrolysis tower device and a flocculent settling technology; (2) treating flocculent-settled effluent water through (acclimated) anaerobic organism technology filled with efficient composite strain; (3) conducting aerobic microorganism technology treatment to the effluent water subjected to anaerobic treatment; and (4) conducting deep oxidization and flocculent settling to the effluent water subjected to aerobic technology and then emitting the effluent water reaching the national-level emission standard. The method solves the difficulty of wastewater treatment during the production of gallic acid, and is small in investment, low in running cost and good in treatment effect.
Owner:先微康新材料科技有限公司
Method of decolouring glucose saccharifying liquid by ion exchange resin
InactiveCN1920056AHighly selective adsorptionPigment dissociation is easyGlucose productionLiquid glucoseActivated carbon
The invention discloses the method for decolouring dextroglucose liquid with ion exchange resin. The method comprises the following steps: confirming the temperature, concentration and flow velocity, putting the 35-45% liquid glucose into ion-exchange device at 40-50Deg.C and 2.5-4.0BV / h; or using activated charcoal to decolour liquid glucose, and then putting it into ion-exchange device. The light transmittance ratio of the decolour liquid is up to 100%, and the conductance is reduced to below 10 mus / cm.
Owner:SHANDONG XIWANG SUGAR
Acid-producing klebsiella oxytoca MOW-02-05, selection method and application of acid-producing klebsiella oxytoca MOW-02-05
InactiveCN103045499AStrong decolorization abilityEfficient decolorization abilityBacteriaWater contaminantsMicroorganismHydrogen
The invention discloses an acid-producing klebsiella oxytoca MOW-02-05, a selection method and an application of the acid-producing Klebsiella oxytoca MOW-02-05, wherein the acid-producing klebsiella oxytoca MOW-02-05 is isolated from an intermittent anaerobic sludge reactor and can efficiently degrade dyes and organisms to produce hydrogen; and the klebsiella oxytoca MOW-02-05 is used for decolorizing azo dyes and biologically produce the hydrogen from organic carbon resources. The strain is identified as klebsiella oxytoca MOW-02-05 and is preserved in China General Microbiological Culture Collection Center, and the preservation number is CGMCC No. 5237. The strain obtained by the invention can solve a problem caused by acidifying the reactor when a conventional anaerobic reactor treats azo dye wastewater, and is suitable for biological treatment of printing and dyeing dye wastewater.
Owner:SUZHOU INST FOR ADVANCED STUDY USTC
Bacterial laccase gene and expression and application thereof
ActiveCN101955952AImprove stabilityStrong decolorization abilityFungiBacteriaBacteroidesMicroorganism
The invention discloses a bacterial laccase gene and expression and application thereof. The bacterial laccase gene has a gene code sequence shown as SEQ ID No:1 and is polypeptide with an amino acid sequence shown as SEQ ID No:2. The invention also discloses an expression strain with the bacterial laccase. The bacterial laccase is taken from uncultured marine microorganisms and has the advantages of high stability in the pH range of 6 to 8, half-life period of 73 minutes at the temperature of 45 DEG C, high decoloration for an azo dye, and capacity of decolorizing industrial dyes.
Owner:ANHUI UNIVERSITY
A method of treating dye wastewater by using modified straw
InactiveCN104310559BImprove cohesionStrong decolorization abilityWaste water treatment from textile industryWater/sewage treatment by flocculation/precipitationDyeing wastewaterPre treatment
Owner:SICHUAN AGRI UNIV
Multi-effect water treatment agent, preparation method thereof and water treatment method
ActiveCN105036269AMulti-effect purification abilityLarge specific surface areaWater contaminantsTreatment involving filtrationSodium bicarbonateWater quality
The invention relates to a multi-effect water treatment agent, a preparation method thereof and a water treatment method. The multi-effect water treatment agent is prepared from acrylamide oligomer grafting graphene oxide, polyacrylamide, polysilicate aluminum ferrite, poly(diallyl dimethyl ammonium chloride) and sodium bicarbonate, wherein the acrylamide oligomer grafting graphene oxide is prepared by two steps of graphene oxide carboxylation and grafting reaction. The multiple-effect water treatment agent can adapt to multiple complex water qualities, and particularly can effectively remove benzene compounds and heavy metal ions. The water treatment method comprises stages of mixing, preliminary flocculation, secondary flocculation and filtering; the efficient utilization of the water treatment agent is realized by using a lower water backflow step, and the production cost is lowered.
Owner:ANHUI HUANGHE WATER RESOURCE POLYTRON TECH INC
Intensified cane juice clarification method
InactiveCN101805806ALow residual sulfurQuality improvementPurification by oxidation/reductionPurification using alkaline earth metal compoundsJuice clarificationSulfur
The invention relates to an intensified cane juice clarification method which comprises pre-liming, primary heating, CO2 full filling, sulphitation and neutralization, secondary heating and settlement; the CO2 full filling procedure is as follows: pre-limed and primarily heated mixed juice is fed with CO2 and Ca(OH)2, the mixed juice is fed into an eddy reactor to have CO2 full filling reaction, and then the cane juice from the eddy reactor has sulphitation and neutralization reactions or is added with some the mixed juice which does not have CO2 full filling reaction to carry out the sulphitation and neutralization reactions; the amount of the Ca(OH2) which is fed into the mixed juice in the CO2 full filling procedure is about 0.05 percent of the weight of the cane juice, and the molar ratio of the amount of CO2 to the amount of Ca(OH)2 is 1:1, and the amount of SO2 and the Ca(OH)2 added in the sulphitation and neutralization reactions is 55 to 95 percent of the amount required in the traditional sulphitation and neutralization reactions. The method can improve the cane juice neutralization reaction speed and the reaction degree as well as the decolorization effect, and reduce the residual sulfur.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY
Biological multienzyme cleaning agent and preparation method thereof
InactiveCN105154253AKeep aliveExtension of timeInorganic/elemental detergent compounding agentsNon-ionic surface-active compoundsAmylaseDecomposition
The invention discloses a biological multienzyme cleaning agent which is characterized by comprising the following raw materials in parts by weight: 15.5-94 parts of deionized water, 1-10 parts of citric acid, 1-20 parts of propylene glycol, 1-10 parts of sodium hydroxide, 1-10 parts of protease, 0.1-6 parts of amylase, 0.1-4 parts of lipase and 0.1-4 parts of cellulase. According to the biological multienzyme cleaning agent, the problem of the conventional multienzyme cleaning agent that enzymes have high possibility of inactivation and hydrolysis is solved; a stable environment is provided, so that the multiple enzymes can coexist in the environment in long term; the validity period of the biological multienzyme cleaning agent can be kept; meanwhile, the decomposition rate of the multiple enzymes cannot be reduced.
Owner:HUBEI MULAN TONGDA TECH
Refined sugar decolorization treatment device and decolorization, backwashing, regeneration and cleaning process
ActiveCN111254230ARestore decolorization abilityExtended service lifeIon-exchanger regenerationPurification using ion-exchange materialsIon exchangeProcess engineering
The invention discloses a refined sugar decolorization treatment device and a decolorization, backwashing, regeneration and cleaning process. An operation system comprises a syrup pump, a decolorization sugar liquid pump, an ion exchange bed group, a dilute sugar liquid tank, a concentrated sugar liquid tank and a decolorized sugar liquid tank. A regeneration system and a reverse regeneration system are communicated with a first pipeline and a second pipeline through pneumatic ball valves and are used for regenerating the ion exchange bed group. The regeneration system comprises a heat exchanger, a heat preservation water tank, a regeneration water pump, a salt dissolving tank, a salt liquid pump, a bag type filter, a desalted water tank, an alkali discharging pump, an alkali storage tank,an alkali metering tank and an alkali metering pump. The reverse regeneration system comprises an ejector, an acid metering box, an acid storage tank and an acid discharging pump which are sequentially communicated. The device has the advantages of small occupied area, no need of external cleaning equipment, good treatment effect, stable removal rate and the like.
Owner:德兰梅勒(北京)分离技术有限公司
Method for extracting adenosine
InactiveCN102731601AStrong decolorization abilityFast flocculationSugar derivativesSugar derivatives preparationAdenosineFiltration
The invention discloses a method for extracting adenosine, comprising the following steps of: A, adjusting pH value of an adenosine fermentation broth to 7-8 by the use of aqueous alkali, heating, stirring, adding a flocculating agent, adjusting the rotating speed to 60+ / -10 r / m after 60+ / -10 minutes, stirring for 5-7 minutes, standing for 10-15 minutes, followed by press filtration; B, condensing the filtrate obtained from the step A in a rotary film evaporator to obtain a concentrate while the condensation temperature is controlled within 70+ / -10 DEG C and degree of vacuum is -0.095+ / -0.01 Mpa; C, placing the concentrate obtained form the step B at room temperature, naturally cooling for 2+ / -1 h, continuously cooling to below zero, followed by freezing crystallization to obtain a crystalline liquid; and D, carrying out pumping filtration on the frozen crystalline liquid obtained from the step C to obtain a wet product, putting the wet product into a baking oven, and drying for 10+ / -1 h so as to obtain a dry adenosine crude product. By the adoption of the method for extracting adenosine from the fermentation broth, the obtained adenosine crude product contains little content of impurities, the loss of the product adenosine is little, and the adenosine yield of a subsequent purification technology and a refining technology is obviously raised. In addition, the whole extraction method is economical and effective.
Owner:STAR LAKE BIOSCI CO INC ZHAOQING GUANGDONG
Method for extracting polysaccharide from hericium erinaceus spore powder
ActiveCN114478813AIncrease squeezeIncrease in sizeOther chemical processesAlkali metal oxides/hydroxidesSporeAqueous solution
The invention relates to a method for extracting polysaccharide from hericium erinaceus spore powder, which comprises the following steps: (1) soaking the hericium erinaceus spore powder in a sodium chloride aqueous solution to ensure that sodium chloride fully enters the spore powder to obtain pretreated spore powder; and (2) immersing the pretreated spore powder into deionized water to obtain the swelled spore powder. And (3) freeze-drying the swelled spore powder, and crushing to obtain the wall-broken spore powder. And (4) heating the wall-broken spore powder in water, carrying out ultrasonic extraction, carrying out solid-liquid separation after the extraction is completed, and respectively collecting a to-be-extracted solution and solid residues. And (5) adding a modified adsorbent into the to-be-extracted solution to perform decoloration treatment, then performing solid-liquid separation after decoloration treatment is completed, and sequentially performing alcohol precipitation separation and drying treatment on the obtained decoloration solution to obtain a hericium erinaceus spore powder polysaccharide product. According to the method disclosed by the invention, the wall breaking effect on the hericium erinaceus spore powder is effectively improved by adopting the characteristics of the freeze-drying technology, the decoloration treatment is also realized, and the purity and quality of the extracted polysaccharide substance are improved.
Owner:XUZHOU UNIV OF TECH +1
High-stability magnesium-ferrous composite flocculating agent and production technology thereof
InactiveCN102659228AHigh COD removal rateLarge specific surface areaWater/sewage treatment by flocculation/precipitationFerrous sulfate heptahydrateOxidation resistant
The invention provides a production technology of a high-stability magnesium-ferrous composite flocculating agent. The flocculating agent comprises 100 weight parts of brine, 5 to 20 weight parts of industrial grade ferrous sulfate heptahydrate, and 0.2 to 5 weight parts of hydrochloric acid. The production technology comprises the following steps of: putting the industrial grade ferrous sulfate heptahydrate into an anticorrosive tank, and adding the industrial hydrochloric acid which is diluted by 2 to 5 times through the brine for complexing and curing; slowly adding the brine into the cured solution with stirring; regulating the pH value of the solution to be between 1 and 3 by using a salt or a weakly alkaline substance; putting micro iron powder which attracts a magnet and is used as a stabilizer into the solution, performing reduction reaction, and quickly regulating the proportion of divalent iron to trivalent iron; and sealing and preserving the solution. The flocculating agent is high in stability, and can overcome the defects that the solution is foamed and overflows a reactor when the iron powder is added for oxidation resistance and the residue blocks a conveying pipeline in the prior art.
Owner:林益立
Method and device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment
InactiveCN110498547AGood dispersionEfficient removalWater/sewage treatment by irradiationWater contaminantsFiltrationDecomposition
The invention discloses a method and a device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment. The device comprises a pretreatment catalytic ozonationair floatation treatment system, a multi-effect filtration treatment system, a hydrogen peroxide contact oxidation system, a hydrogen peroxide / ultraviolet heterogeneous catalytic nano-bubble ozonation system, a heterogeneous filtration and catalytic digestion system and an effluent / backwashing system. Macromolecular organic matters which are difficult to treat in the coking wastewater are effectively removed through multistage and multi-effect catalytic advanced oxidation; the coordination effect of heterogeneous catalysis reduces the consumption of a single oxidant and reduces the unit price cost of system treatment; the application of a granular carbon catalytic ozonation technology under an alkaline condition achieves a very strong decomposition function and a very strong decolorizingeffect; and the application of the hydrogen peroxide / ultraviolet heterogeneous catalytic nano-bubble ozonation system makes the chroma of the effluent finally controlled within 20.
Owner:HUNAN PINGAN ENVIRONMENT PROTECTION
Acrylic decolorization resin and preparation method thereof
ActiveCN102020745BStrong decolorization abilityHigh content of functional groupsAnion exchangersCross-linkPolymer science
The invention relates to the field of polymer chemistry, in particular to a novel acrylic decolorization resin and a preparation method thereof. The preparation method comprises the following steps: by taking a polyvinyl monomer as a cross-linking agent, carrying out suspension polymerization on a vinylpyridine monomer and an aliphatic unsaturated ester monomer in the presence of a pore forming agent to obtain white balls; carrying out aminolysis reaction on the obtained white balls and polyethylene polyamine to introduce amine groups; and reacting the obtained amine balls with a monomer containing an alcoholic hydroxyl group under an alkaline condition to obtain the acrylic ion exchange decolorization resin. The resin has the properties of a strong-base resin and a weak-base resin containing pyridine groups at the same time; and compared with the commercially available common strong or weak-base ion exchange resin, the obtained target product in the invention has the advantages of high functional group content, strong decolorization capability, good contamination resistance, long service life, greater social benefit and economic benefit and the like during the decolorization process.
Owner:AMICOGEN CHINA BIOPHARM CO LTD
Special decolorization resin for starch saccharification liquid
InactiveCN106674446AGood regeneration performanceStrong decolorization abilityCoatingsN-phenylmaleimideLinear low-density polyethylene
The invention discloses a special decolorization resin for starch saccharification liquid and relates to the technical field of processing of resin. The resin is prepared from the following raw materials in parts by weight: 70-80 parts of styrene, 40-50 parts of hydroxyethyl methylacrylate, 20-30 parts of divinyl benzene, 15-20 parts of pore-foaming agents, 6-11 parts of chlorinated polyethylene, 4-8 parts of linear low-density polyethylene, 4-8 parts of water-soluble chitosan, 3-6 parts of N,N-dimethylamino ethyl ester, 3-6 parts of sesbania gum, 3-6 parts of anionic polyacrylamide, 2-4 parts of N-phenylmaleimide, 2-4 parts of sodium tripolyphosphate, 1-2 parts of sodium polystyrenesulfonate, 1-2 parts of agar powder, 0.5-1 part of methyl hydroxybenzoate, 0.5-1 part of vitamin C magnesium phosphate, 20-30 parts of ethyl alcohol and 250-300 parts of water. The prepared resin is capable of effectively removing colored impurities in the starch saccharification liquid; the decolorization rate reaches over 98%; moreover, the decolorization time is short; the processing cycle of starch saccharification can be shortened.
Owner:DONGZHI OASIS ENVIRONMENTAL PROTECTION CHEM
Preparation method and applications of chitosan derivative absorbent
InactiveCN104826614AStable structureSimple structureOther chemical processesWaste water treatment from textile industrySorbentFreeze-drying
The invention discloses a preparation method and applications of a chitosan derivative absorbent. The VNA-CTS absorbent is prepared through the free radical graft polymerization between chitosan (CTS) and vinyl nonanoate (VNA) in a mixed system of acetic acid (2 vol%) and waterless ethanol according to a volume ratio of 19:1, and the reaction products are subjected to freeze-drying. The absorbent is light-yellow solid particles, the structure is stable, and thus the preservation and transportation become easier. The preparation method is simple, the energy consumption is low, and the pollution to the environment is little. The novel VNA-CTS absorbent can remove the color of wastewater strongly and rapidly, can be used in a pH range of 2 to 7, has a high slat tolerant performance, and can be regenerated easily.
Owner:JIANGNAN UNIV
Preparation method of coated nano zero-valent iron
InactiveCN107879459AUniform particle size distributionStrong decolorization abilityWater/sewage treatment by reductionMicrowaveNitrogen
The invention discloses a method for preparing coated nanometer zero-valent iron, which comprises the following steps: (1) adding FeCl3·6H2O into an ethanol solution, stirring and mixing, and then microwave treatment; Add ethyl silicate, blow nitrogen gas for 15-30min, stir at the same time, and cool down to room temperature naturally; (3) Heat up the system obtained in step (2) for 30min, then continue to heat up for reaction, cool down to room temperature naturally, and disperse by ultrasonic 15min; (4) Introduce nitrogen into the system of step (3), then dropwise add KBH4 solution, react for 15-30min after the dropwise addition, let stand for 60-90min, filter, and wash the obtained precipitate with ethanol and distilled water respectively 3 times, vacuum dry. The coated nanometer zero-valent iron provided by the invention has a uniform particle size distribution, good decolorization ability, high repetition times and high recycling rate.
Owner:SHAANXI SHENGMAI PETROLEUM
Tannin and aluminum salt modification decolorizing agent preparation method
ActiveCN110683623AHigh positive charge densityHigh molecular weightWater/sewage treatment by flocculation/precipitationEnvironmental engineeringTannin
The invention belongs to the technical field of water treatment agent production, and particularly relates to a tannin and aluminum salt modification decolorizing agent preparation method, which comprises: adding dicyandiamide, ammonium chloride, a first part of a formaldehyde aqueous solution and tannin into a reactor, heating to dissolve solids, starting stirring, adding a second part of the formaldehyde aqueous solution in a dropwise manner by controlling the temperature of the material system at 65-75 DEG C, and carrying out a heat insulation reaction for 2-3 h after the adding to obtain atannin-dicyandiamide-formaldehyde polycondensate; and adding an aluminum salt into the reaction system, and aging at 65-80 DEG C to obtain the modification decolorizing agent. According to the invention, the prepared modification decolorizing agent has advantages of high positive charge density, large molecular weight, strong decolorizing performance and the like, and is a novel environmentally-friendly water purifying agent integrating decolorization, turbidity removal and heavy metal ion removal.
Owner:山东聚杰环保科技有限公司
Bagasse activated carbon and preparation method thereof
InactiveCN112441584AIncrease surface areaEasy to manufactureCarbon compoundsActivated carbonRenewable biomass
The invention discloses bagasse activated carbon and a preparation method thereof. The preparation method comprises the following steps: pretreating, carbonizing, activating, pickling, drying and post-treating bagasse. According to the invention, activated carbon is prepared by adopting a secondary activation method; gas activation is firstly adopted, and then a reagent activation method is adopted, so the surface area of the activated carbon can be further increased; preparation process is simple, convenient and environmentally friendly; the prepared activated carbon has the advantages of being large in specific surface area, small in pore diameter and high in adsorption capacity; since the bagasse is used as a raw material to prepare the activated carbon, an effective approach is provided for recycling of the bagasse and the prevention of resource waste and environmental pollution; and the bagasse is a safe non-toxic renewable biomass material, so the active carbon prepared from thebagasse can be used for the processing of a part of food, the added value of the product is high, and good social and economic benefits can be generated; and the activated carbon is high in decolorization capacity, good in stability, high in strength, safe to use and free of toxicity.
Owner:GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
Method of discoloring glucose saccharifying liquid by ion exchange resin
InactiveCN100507008CHighly selective adsorptionPigment dissociation is easyGlucose productionActivated carbonTransmittance
Owner:SHANDONG XIWANG SUGAR
Enzymatic hydrolysate decolorization resin for natural pectin extraction
InactiveCN106854293AGood regeneration performanceStrong decolorization abilityCoatingsMethacrylateHydrolysate
Relating to the technical field of resin processing, the invention discloses an enzymatic hydrolysate decolorization resin for natural pectin extraction. The enzymatic hydrolysate decolorization resin is prepared from the following raw materials by weight: 60-65 parts of cyclohexyl methacrylate, 40-45 parts of ethylene glycol dimethacrylate, 30-40 parts of divinyl benzene, 20-30 parts of a pore-forming agent, 5-10 parts of caprylic capric triglyceride, 4-8 parts of sodium carboxymethyl starch, 4-8 parts of microcrystalline cellulose, 3-6 parts of Carbomer 934, 3-6 parts of di-octadecyl dimethyl ammonium chloride, 2-4 parts of magnesium aluminum silicate, 2-4 parts of triallyl cyanurate, 1-2 parts of isopropyl myristate, 1-2 parts of an initiator, 0.5-1 part of polyaspartic acid, 15-20 parts of ethanol, and 200-250 parts of water. The resin prepared according to the invention is specifically used for enzymatic hydrolysate decolorization in a natural pectin extraction process, can effectively remove colored impurities from the enzymatic hydrolysate and coal ash brought in during pomace drying, and can reach a decolorization rate up to more than 98%, thereby significantly improving the color value and purity of the obtained pectin.
Owner:DONGZHI OASIS ENVIRONMENTAL PROTECTION CHEM
Ecological floating bed for remediation of oil-polluted water bodies
ActiveCN105293709BImprove water purification effectImprove adsorption capacityWater contaminantsBiological water/sewage treatmentEnhanced degradationEngineering
Owner:HOHAI UNIV
Saccharomycete and its application
InactiveCN100344749CIncrease vitalityStrong decolorization abilityFungiBiological water/sewage treatmentWastewaterHigh activity
The present invention discloses one kind of saccharomycetes and its application, and provides one saccharomycete strain, Pseudozyma rugulosa Y-63 CGMCC No. 1247, with high dye decolorizing ability and its usage in decolorizing dye. The saccharomycete strain, Pseudozyma rugulosa Y-63 CGMCC No. 1247, has very high activity, very powerful dye decolorizing ability, simple culture process, fast growth speed and less mutation, and may be used as the template strain for the research of dye decolorizing mechanism. What is more important is that the saccharomycete strain may be used directly in decolorizing dye and has industrial application foreground in dye waste water treatment.
Owner:TSINGHUA UNIV
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