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287 results about "Biosorption" patented technology
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Biosorption is a physiochemical process that occurs naturally in certain biomass which allows it to passively concentrate and bind contaminants onto its cellular structure. Biosorption can be defined as the ability of biological materials to accumulate heavy metals from wastewater through metabolically mediated or physico-chemical pathways of uptake. Though using biomass in environmental cleanup has been in practice for a while, scientists and engineers are hoping this phenomenon will provide an economical alternative for removing toxic heavy metals from industrial wastewater and aid in environmental remediation.
Continuous flow urban sewage partial nitrification and anaerobic ammonia oxidation denitrification method
ActiveCN103086568AHigh recovery rateImprove realized recovery rateMultistage water/sewage treatmentActivated sludgeNitrate nitrogen
The invention discloses a continuous flow urban sewage partial nitrification and anaerobic ammonia oxidation denitrification method and belongs to the field of sewage. The method comprises the following steps of: allowing urban sewage to enter a biological adsorption reactor, adsorbing organic matters in water to activated sludge through the adsorption action of the activated sludge, and carrying out denitrification and anaerobic ammonia oxidation in an anoxic area of a partial nitrification anaerobic ammonia oxidation reactor to remove residual organic matters in water and nitrate nitrogen in return sludge; carrying out the partial nitrification in an aerobic area, and carrying out the anaerobic ammonia oxidation action in the anoxic area; repeating the actions in the aerobic area and the anoxic area; and finally, fulfilling the aim of removing nitrogen from the sludge.
Owner:上海立源生态工程有限公司
Method for carrying out advanced treatment on papermaking sewage
InactiveCN101050044AReduce chromaLow chroma valueMultistage water/sewage treatmentSustainable biological treatmentIron saltsChlorine dioxide
This invention provides a method for deeply treating papermaking wastewater. The method comprises: treating wastewater in a biochemical secondary precipitation pool, performing chemical flocculation, precipitating, filtering with composite filtration materials, adsorbing with biological adsorbent or oxidizing with oxidant, storing in a clear water tank, and recycling. The water purifier of chemical flocculation is composed of aluminum salt and / or iron salt, and nonionic, anionic or cationic polyacrylamide. The aluminum salt is one or more of aluminum chloride, aluminum sulfate and potassium aluminum sulfate. The iron salt is one or more of ferrous sulfate, ferric sulfate, poly (ferric sulfate) and ferric chloride. The biological adsorbent is adsorbent containing active sludge. The oxidant is ozone, ClO2 or Cl2. After deeply treated with this method, wastewater can satisfy strict discharge standards.
Owner:SHANDONG SWAN WATER ENG
Ecological fish farming method in rice field and ecological rice produced by rice plants
InactiveCN103355071AIncrease the effective use areaTake advantage ofClimate change adaptationPisciculture and aquariaCalcium in biologyVitamin C
The invention discloses an ecological fish farming method in a rice field, which comprises the following steps of rice field preparation, rice field transformation, fish farming facility preparation, rice seedling transplantation, biosorption, rice field disinfection, irrigation, fertilization, stocking fish seed selection, stocking fish fry disinfection, stocking and feeding management, wherein annular field fish ditches dug through the rice field transformation are V-shaped ditches arranged on the inner sides of ridges around the rice field; the biosorption utilizes a biosorption agent to adsorb heavy metal in rice field soil and irrigation water; and stocking fish seeds are selected from eight-beard catfishes. The invention further discloses rice produced by rice plants planted in the rice field using the ecological fish farming method. According to the method and the rice, an effective usable area of the rice field is increased significantly; pollution of the heavy metal such as lead and cadmium is reduced; integral benefits of fish farming in the rice field are improved; the ecological rice contains rich protein, more microelements such as iron, magnesium and calcium, and vitamin C, has no chemical pesticide residual, and is green and environment-friendly; and the content of the heavy metal such as lead and cadmium is very low.
Owner:JIANGYAN QINGRONG RICE CULTIVATION SPECIALTY COOP
Preparation method for novel nano magnetic cyclodextrin/graphene biological adsorption material
InactiveCN102716730AGood dispersionImprove mechanical propertiesOther chemical processesWater/sewage treatment by sorptionDesorptionCyclodextrin
The invention discloses a preparation method for a novel nano magnetic cyclodextrin / graphene biological adsorption material and particularly relates to modifying the surface of graphene with magnetic cyclodextrin through a surface modification technology. The novel method is characterized in that a nano magnetic particle is adopted as a carrier; coating modification is conduced on the nano magnetic particle to obtain the magnetic cyclodextrin with a core-shell structure; and then the functional graphene is modified with the magnetic cyclodextrin to prepare the novel magnetic nano biological adsorption material with super-strong adsorbability, easiness in separation and zero contamination. Through the adoption of the preparation method, the defect of high possibility of agglomeration of the graphene is overcome, the specific surface area of the adsorption material is greatly enlarged, the enveloping sites of cyclodextrin molecules are increased, and the range of adsorption objects is expanded. The adsorption material prepared by the invention has the advantages of strong controllability of a surface structure, reliable mechanical stability, strong recognition capability, high adsorptive capacity, easiness in desorption, reusability and the like; and simple and feasible ways and means are provided for treatment of environmental pollutants and recycling of waste.
Owner:UNIV OF JINAN
Anaerobic ammonia oxidation-based low-carbon nitrogen ratio urban sewage denitrification system and treatment process
ActiveCN104058555AImprove resource utilizationReduce outputWater contaminantsWaste based fuelOperating energyTotal nitrogen
The invention provide an anaerobic ammonia oxidation-based low-carbon nitrogen ratio urban sewage denitrification system and treatment process. The system comprises a biological adsorption unit, an anaerobic ammonia oxidation unit, a nitrosation unit, a membrane technology unit and an anaerobic digestion unit, wherein the biological adsorption unit comprises an aeration tank and a settling pond; the aeration tank is connected with the settling pond; the settling pond is connected with an anaerobic ammonia oxidation tank; the anaerobic ammonia oxidation tank is connected with a nitrosation tank provided with a membrane component; the anaerobic digestion unit is an independent sludge treatment unit. The system is short in process flow, short in system startup time, stable and high-efficiency in denitrification performance, standard reach of effluent total nitrogen, low in operating energy consumption and material consumption and low in residual sludge yield. Organic matters in the urban sewage are subjected to biological adsorption removal by utilizing biological adsorption, sludge which is discharged through biological adsorption and is enriched in organic matters is subjected to medium-temperature anaerobic digestion treatment to produce biogas to be used for heating and heat preservation of the medium-temperature anaerobic digestion tank and the low-temperature anaerobic ammonia oxidation tank, the organic matters in the urban sewage can be recycled, and the operating energy consumption of the process is further reduced.
Owner:NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
Low-energy-consumption municipal sewage nitrogen removal method based on enhanced carbon capture and anaerobic ammonia oxidation
ActiveCN106830573AEnhanced biosorption efficiencyReduce the degree of carbon oxidationTreatment with aerobic and anaerobic processesMultistage water/sewage treatmentEnergy recoveryNitrogen gas
The invention discloses a low-energy-consumption municipal sewage nitrogen removal method based on enhanced carbon capture and anaerobic ammonia oxidation. A raw water tank is a closed tank and is provided with an overflow pipe and a blow-down pipe; a bio-stabilization reactor and a biological adsorption reactor are respectively in a high DO environment and a low DO environment; the municipal sewage carbon capture is enhanced by improving the ability of adsorbing organic matters through microbes; a biological nitrogen removal reactor is sequentially divided into a low DO aerobic zone, an anoxic zone, an aerobic zone and a settling zone; a shortcut nitrification-anaerobic ammonia oxidation reaction is carried out in the low DO aerobic zone, and ammonia nitrogen is converted into nitrogen and partial nitrate nitrogen; organic matters in partial raw water serve as a carbon source, and advanced nitrogen removal is realized through the shortcut nitrification-anaerobic ammonia oxidation reaction. In order to avoid the ammonia nitrogen existing in the effluent, the aerobic zone is increased at the rear end of the anoxic zone, and the residual ammonia nitrogen in the sewage is oxidized into nitrate; and finally, the sewage is discharged through the settling zone. According to the method, the municipal sewage energy recovery efficiency can be improved, and the advanced nitrogen removal is realized.
Owner:BEIJING UNIV OF TECH
Air purifying material of microorganism absorption degradation, preparation method and applications thereof
InactiveCN101554485AGood purification effectHigh viability of immobilized cellsMicroorganism based processesDeodrantsAir cleaningPollutant
The invention discloses an air purifying material of microorganism absorption degradation, a preparation method and applications thereof. The air purifying material of microorganism absorption degradation is obtained by embedding biological grains with 2 to 4mm grain diameter of pseudomonades or acinetobacter which are cultured and acclimatized in a crosswise way in calcium alginate gel. The air purifying material of microorganism absorption degradation can be used in the long time purification of formaldehyde and benzene series pollution in rooms with obvious effect. The product has the advantages of high activity of immobilized cells, good stability, effectively reducing the content of chemical pollution of formaldehyde and benzene series pollution in rooms, being beneficial for realizing the recycling, regenerating and reusing of biocatalysts, and seriously avoiding the pollution to room environment by microorganisms. The raw material has low cost, the preparation process is simple, easy and convenient in operation, and product can be applied in different reactors.
Owner:TIANJIN UNIV
Preparation method of alga biological adsorbent
InactiveCN105561922AGood effect in treating heavy metal wastewaterFast adsorptionOther chemical processesAlkali metal oxides/hydroxidesActivated sludgeChemical treatment
The invention discloses a preparation method of an alga biological adsorbent, belonging to the field of adsorbents. The preparation method comprises the steps of: firstly carrying out physical processing of drying and pulverizing on algae, then carrying out chemical treatment to remove impurities adsorbed to the algae, deactivating the algae under high temperature and strong acid conditions, mixing with modified activated sludge, and carrying out carbonization coating to obtain the biological adsorbent, which can be used for treating heavy metal wastewater, on the surfaces of particles. According to the preparation method, dead algae have more broken cell walls, and more internal functional groups are exposed to be combined with metal ions, so that the effect for treating the heavy metal wastewater is better; the adsorbent can be recycled; in addition, the activated sludge is added, so that the adsorption capacity is increased and the adsorption speed to heavy metals can be increased.
Owner:雷春生
Process for preparing bean skin biosorption
InactiveCN1907558AImprove adsorption capacityHigh strengthOther chemical processesOrganic acidSorbent
The invention relates to a method for preparing beam biological absorber, which can remove and recycle heave metal ion, wherein it directly uses beam as water processing agent, with low mechanical strength and easy broken, and the adsorption capacity can reach 30mg / g; and the invention comprises: breaking the beam, selecting the ones whose diameter is lower than 5mm; adding alkali liquor at 10-80Deg. C to be pretrated for 0.5-24 hours; the amount of alkali liquor and bema are 2-30ml / g; the density of alkali liquor is 0.01-1M; washing it with water to neutral; adding organic acid solution to be modified; the density of organic acid density is 0.05-1M, at 30-130Deg. C; the amount ratio between organic acid and beam is 2-30ml / g, to be modified for 0.5-12 hours; washing it to neutral and drying at 20-80Deg. C. The inventive absorber can be deabosrbed via diluted acid at 0.02-1M; then regenerated via 0.005-1M diluted acid to be used again. The invention has low cost, while the adsorption capacity can reach 60-200mg / g, without secondary pollution.
Owner:BEIJING UNIV OF CHEM TECH
Comprehensive treatment and utilization method of livestock and poultry breeding wastewater
InactiveCN108101314ARealize deep phosphorus removalGood water saving effectWater/sewage treatment by irradiationWater contaminantsPig farmsExternal energy
The invention discloses a comprehensive treatment and utilization technology of livestock and poultry breeding wastewater. The technology concretely comprises the following steps: solid liquid separation, biological adsorption and condensation, UASB, two-stage A / O, efficient MBR, chemical phosphorus removal and ultraviolet catalytic ozonation. Compared with the prior art, the technology has the following benefits: the technology ensures that treated wastewater can meet the requirements of intensive pig farm pollutant discharge limitation in discharge standard of pollutants for livestock and poultry breeding (GB18596-2001) and water quality standard for farm irrigation) (GB 5084-2005) through the process combination; nutrient substance, such as organic matter, nitrogen and phosphorus, in breeding wastewater is recycled through the effect of biological adsorption and condensation on the basis that the technology reaches a standard, so that composting production is performed, and the problem that resource recovery cannot be performed through the existing single pollution treatment technology is solved; the ozonation efficiency is improved through ultraviolet catalysis, and the problems that the existing ozonation technology cannot be stable and reach a standard and the energy consumption is high are solved; external energy input for the whole technology is greatly reduced throughrecycling of marsh gas for generating power.
Owner:福建省致青生态环保有限公司
Composite material with formaldehyde purification function and production method thereof
ActiveCN102633482APlay the role of adsorption and purificationStrong oxidative decomposition abilityFiberFilling materials
The invention provides a composite material with formaldehyde purification function, which is prepared by dissolving 45-73 parts by weight of powder with formaldehyde purification function, and one or both of 0.15-1.2 parts by weight of reinforcing fiber and 15-20 parts by weight of filling material in 20-40 parts of compound solution. The powder with formaldehyde purification function is prepared by mixing 38-55 parts by weight of calcic inorganic base, 6-16 parts by weight of algae and 3-6 parts by weight of modifier; and the compound solution is compounded from 100 parts by weight of clear water, 1.5-2.0 parts by weight of crystal modifier, 0.4-0.5 part by weight of waterproofing agent and 0.4-0.5 part by weight of defoaming agent. The formaldehyde adsorption rate of the composite material is 95%, the formaldehyde purifying effect durability is up to 90%, the methylbenzene adsorption rate is 68.5%, and the methylbenzene purifying effect durability is up to 50.4%. Compared with the chemical process, biosorption process and adsorption process adopted by the traditional formaldehyde purification material, the invention has the advantages of natural and environment-friendly raw materials, obvious purifying effect, wide product derivation performance and low cost.
Owner:湖北格林森绿色环保材料股份有限公司
Process for the removal of metals by biosorption from mining or industrial effluents
InactiveUS7326344B2Increase capacityWaste water treatment from quariesTreatment using aerobic processesSolventTreated water
A method and a plant to remove metals by biosorption from mining or industrial effluents comprising: (a) subject the effluent to at least one first stage of pre-treatment, selecting among: precipitation by pH rising, solvent extraction or solvent extraction on emulsified membranes in order to reduce its load of metals to a concentration level that allows it to be treated by the next stage of biosorption, and (b) subject the liquid that has been previously in the stage of pre-treatment to a second stage of continuous metals removal by biosorption. To perform the continuous metals removal by biosorption is supplied a group of reactors, constituted for at least one, or at least two or at least three fixed bed bioreactors, which packing material has been colonized with a biofilm formed by a bacterial culture or a mixture of microorganisms with the capacity of binding metals by biosorption; pre-treated water is led to the group of bioreactors, the treated effluent comes from this last one and is led to the discharge of the plant.
Owner:UNIVERSITY OF CHILE +1
Bacterial strain for a metal biosorption process
This invention is referred to a new bacterial strain of Bacillus sp., to be applied in a metal biosorption process, which was deposited in the Agricultural Research Culture Collection (NRRL) International Depositary Authority, 1815 N. University Street, Peoria Ill. 61604, USA, having an accession number NRRL-B-30881. It is described, also, a sporulated and non-sporulated industrial inoculant of said bacterium, a method to produce said inoculant, and a process to remove metals by said bacterium.
Owner:BIOTECNOLOGIAS DEL AGUA +1
Cadmium solidified bacterial organism adsorbents and preparation method thereof
The invention relates to a fixed bacteria biosorption of Cd and preparing method thereof, also relates to a biosorption made from a special bacteria processed by chemical agent embedding and preparing method thereof, the bacteria is bacillus cereus, the chemical agent is 2.5% of sodium alginate solution, suiting for processing waste water containing heavy metal Cd, which absorption efficiency of Cd is more than 50%.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Method for removing lead in heavy metal polluted soil by utilizing nanometer zero-valent iron and citric acid for combined elution
InactiveCN103599923AEasy to operateGood rinse effectContaminated soil reclamationFiltrationPrecipitation
The invention discloses a method for removing lead in heavy metal polluted soil by utilizing nanometer zero-valent iron and citric acid for combined elution. The method comprises: adding nanometer zero-valent iron into a citric acid solution to prepare a nanometer zero-valent iron and critic acid composite solution, adding the composite solution into lead polluted soil, performing oscillation, elution and centrifuging at room temperature, then performing membrane filtration and collecting filtrate. The eluent is simple to prepare, strong in operationality and substantial in elution effect, and has the elution rate on lead of 83.08%; the lead content of eluted soil accords with soil environmental quality standards; lead in eluate can be recovered by chemical precipitation, biological adsorption and the like, and the eluate reaches discharging standards and does not cause secondary pollution to environment.
Owner:SICHUAN AGRI UNIV +1
Method for adsorbing lead in wastewater by using composite magnetic biological adsorbent
InactiveCN102616912AEnhanced internal transport adsorption mechanismHigh mechanical strengthMultistage water/sewage treatmentWater/sewage treatment by neutralisationIndustrial waste waterSorbent
The invention discloses a method for adsorbing lead in wastewater by using a composite magnetic biological adsorbent. The method comprises the following steps of: adding 15-60 g / L of the composite magnetic biological adsorbent by wet weight into lead-contained industrial waste water with a pH value ranging from 2 to 6.5 and a concentration being 10-500 mg / L; oscillating and adsorbing the mixture at a temperature of 30-35 DEG C for more than 8 hours; then separating the adsorbent from the wastewater; and adjusting the wastewater to be neutral to discharge. The composite magnetic biological adsorbent uses white-rot fungus living mycelium as a carrier; the mycelium is wound into a pellet; Fe3O4 nanometer particles and calcium alginate are embedded inside the pellet; and the calcium alginate serving as an immobilization medium is used for tightly connecting the mycelium with the Fe3O4 nanometer particles. The method provided by the invention has the advantages of large adsorption amount, high adsorption efficiency, simpleness and convenience for operation, low cost, high recycle rate, cleanliness, no pollution and the like.
Owner:HUNAN UNIV
Method for separating heavy metals lead and cadmium by using biological adsorbent packed column
ActiveCN102849817AEasy to prepareEasy to operateOther chemical processesWater/sewage treatment by sorptionPeristaltic pumpSorbent
The invention relates to a method for separating heavy metals lead and cadmium by using a biological adsorbent packed column. The method comprises the following steps: filling hydroxyl surface modified straws into a chromatographic column by a wet packing method; refluxing wastewater containing heavy metals lead and cadmium by a peristaltic pump to the packed column for dynamic adsorption, and recycling an effluent; eluting the packed column with 0.2mol / L EDTA eluant; recycling the eluant; and separating the lead and cadmium by monitoring concentration of lead ion and cadmium ion in the effluent and eluant. The eluted packed column can be used repeatedly. The invention has the following beneficial effects: (1) hydroxyl surface modified straw packed column has large adsorption capacity to heavy metals lead and cadmium, and can effectively separate the lead and cadmium; (2) the biological adsorbent has extensive sources, and is cheap and easily available; (3) the packed column can be simply manufactured and conveniently operated; and (4) the saturated packed column can be comprehensively utilized to reduce the cost of wastewater treatment.
Owner:湖北威辰环境科技有限公司
Heavy metal biological absorbent, preparation method thereof and application in treating cadmium-containing wastewater
InactiveCN102151551AChange surface structureGood adsorption functionOther chemical processesAlkali metal oxides/hydroxidesInorganic saltsPenicillium simplicissimum
The invention discloses a heavy metal biological absorbent, a preparation method of the absorbent and an application in treating cadmium-containing wastewater. The heavy metal biological absorbent mainly consists of penicillium simplicissimum bacteria powder after being modified by rhamnolipid. The method for preparing the biological absorbent comprises the following main steps: culturing penicillium simplicissimum in a liquid culture medium, then continuously enlarging and culturing the cultured penicillium simplicissimum, adding the rhamnolipid taken as biosurfactants during the process, collecting fungus balls after the culture, cleaning the fungus balls with inorganic salt solution, freezing and drying the fungus balls to the constant weight and grinding the fungus balls into powder to obtain the heavy metal biological absorbent. In the application in treating the cadmium-containing wastewater, the heavy metal biological absorbent is mainly utilized to remove the cadmium in the wastewater, and the method mainly comprises the following steps: adding the heavy metal biological absorbent into the cadmium-containing wastewater, carrying out oscillatory reaction and completely removing after the filtration. The heavy metal biological absorbent has good absorption effect when being used for treating the cadmium-containing wastewater. The method for removing the cadmium contained in the wastewater has the advantages of simple operation conditions, low cost and high efficiency and is easy to implement.
Owner:HUNAN UNIV
Biological adsorption and artificial wetland combined town sewage treatment system and method
InactiveCN1966424AEasy loadingShort mud ageTreatment using aerobic processesSustainable biological treatmentConstructed wetlandParticulates
The invention relates to the cities sewage system and treating method which combines biological adsorbing and artificial wet land, and it belongs to city-government and environmental-protection domain. The system includes coarse and fine racks, sedimentation basin, and aerator and depositing tank of a stage in AB technology, underflow gallet beds artificial wet land and pipes connecting all devices. The method includes the following steps: removing the floating substances and fine sands through the coarse and fine racks, sendiment basin; removing the suspended particulate and organics, nitrogen and phosphorous through aerator of A stage; precipitating the floccular active sludge and organic suspended particulate through the depositing tank of A stage; the water entering the underflow gallet beds artificial wet land; contacting sterilizing to discharge the water. The invention has combined the biological adsorption and artificial wet land which can remove some organics in advance to increase the possibility of bio-treating the water so that it has solved many problems in wet land treating technology such as large occupying area, easy to be blocked and poor treatment efficiency in winter.
Owner:BEIJING GUOHUAN TSINGHUA ENVIRONMENT ENG DESIGN & RES INST CO LTD BEIJING CHINA
Biological adsorbent capable of removing fluorine and heavy metals in wastewater, preparation method and application method thereof
ActiveCN104475039ASimple preparation processShort cycleOther chemical processesWater contaminantsSorbentPollution
The invention discloses a biological adsorbent capable of removing fluorine and heavy metals in wastewater, a preparation method and an application method. The preparation method of the biological adsorbent takes filamentous fungi as the raw material and comprises the following steps: preparing a liquid culture medium by using crops rich in sugar and starch, culturing at the constant temperature, simultaneously stirring and reacting the liquid culture medium with an aluminum sulfate liquid, filtering, washing and drying to prepare the biological adsorbent. The biological adsorbent is simple in preparation process, low in preparation cost, mild in experiment operating conditions and free of secondary pollution, is environment-friendly, is high in fluorine ion adsorption capacity being 98.2mg / g, and is capable of simultaneously, efficiently and quickly removing fluorine ions and heavy metal ions such as lead, zinc, copper, cadmium and the like in the wastewater.
Owner:CENT SOUTH UNIV
Preparation method and application of modified orange peel biological adsorbent
InactiveCN102728327AEfficient recyclingImprove adsorption capacityOther chemical processesWater/sewage treatment by sorptionAlcoholPtru catalyst
The invention relates to a preparation method and application of a modified orange peel biological adsorbent. The method comprises the steps that the orange peel waste material is cleaned, dried, ground, screened, and refluxed with epichlorohydrin in absolute ethyl alcohol and NaOH solution, so the epichlorohydrin cross-linking type orange peel is obtained; and the epichlorohydrin cross-linking type orange peel is added with a catalyst and a modifier to be continuously stirred, after the reaction is completed, and the treated orange peel is cleaned and dried, so the cysteine or diethylene triamine modified orange peel biological adsorbent can be obtained. The adsorbent can effectively adsorb the heavy metal ions of Cu<2+>, Pb<2+>, Ni<2+> and Zn<2+> in the wastewater, the treatment cost is low, the efficiency is high, and the treated water body can reach the national wastewater discharge standard, so the purpose of treatment of wastes with another waste is realized. Moreover, the heavy metal ions in the wastewater can also be recovered, and the adsorbent has the characteristics of low cost, reusability, simple preparation method and strong adsorption capability.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Reclaimed water recovery treatment method and device
InactiveCN101786764ASave money on wind energyHave affinityTreatment with aerobic and anaerobic processesEnergy based wastewater treatmentSludgeMedicine
Owner:SOUTH CHINA UNIV OF TECH +1
Laboratory waste water treatment method and device
InactiveCN101659504AReduce CODEasy to handleSludge treatment by de-watering/drying/thickeningTreatment with aerobic and anaerobic processesAeration systemSludge
The invention relates to laboratory waste water treatment, in particular to a laboratory waste water treatment method and a device. In the method, laboratory waste water is subject to internal electrolysis, micro electrolysis and biosorption in sequence; aeration is carried out along with treatment; sludge produced in waste water treatment is dried, and the drying treatment is characterized in that gas produced in the aeration process is used for drying the sludge. The device comprises an electric control system and a waste water treatment unit, wherein, the waste water treatment unit comprises an inner electrolytic cell, a micro electrolytic cell, a biosorption cell and a desilter which are sequentially connected from front to back; the inner electrolytic cell, the micro electrolytic celland the biosorption cell are all provided with an aeration system; in addition, the device of the invention is also provided with a sludge filtering cell for treating sludge. The method and the device of the invention can be widely applied in treating waste water in various organic chemical engineering laboratories.
Owner:周瑞兴
Phosphorus-accumulating bacteria immobilized small balls and application thereof
ActiveCN108359663AHigh activityLarge adsorption capacityWater contaminantsOn/in organic carrierSorbentBiocompatibility Testing
The invention discloses phosphorus-accumulating bacteria immobilized small balls prepared by the following steps: preparation of a bacterial suspension; adsorption with activated carbon; preparation of a gamma-polyglutamic acid / chitosan oligosaccharide hydrogel; preparation of a composite embedded carrier aqueous solution; and preparation of the phosphorus-accumulating bacteria immobilized small balls. The invention also discloses an application of the phosphorus-accumulating bacteria immobilized small balls in treatment of phosphorus-rich waste water. The prepared phosphorus-accumulating bacteria immobilized small balls have the advantages of high activity, large adsorption capacity and good mechanical strength. With activated carbon as an adsorbent, the biosorption capacity of the phosphorus-accumulating bacteria immobilized small balls is significantly increased, the skeleton supporting role can also be played, and the mechanical strength of the phosphorus-accumulating bacteria immobilized small balls is enhanced; the gamma-polyglutamic acid / chitosan oligosaccharide hydrogel has the advantages of good biocompatibility, high viscosity, no toxicity, and good environmental friendliness, and significantly promotes the activity and adsorption capacity of the phosphorus-accumulating bacteria immobilized small balls, can also improve the mechanical strength and water content of thesmall balls, and enlarges the pore size of scaffolds in the phosphorus-accumulating bacteria immobilized small balls.
Owner:QUFU NORMAL UNIV
Seaweed plants and preparation of crust amine combined biological adsorption material and applications thereof
InactiveCN101249421AEnsure structural stabilityNo pollution in the processOther chemical processesWater/sewage treatment by sorptionProtonationSwelling capacity
The invention discloses a preparation method and application of biosorption material prepared from seaweed plants and chitin amine. The preparation method includes pretreating seaweed plants with the hydrochloric acid solution to eliminte the swelling capacity of alginic acid in the seaweed plants after protonized; and pulverizing the seaweed plants to evenly dispers the seaweed plants in a chitin amine solution to obtain the dispersion. After the dispersion is dropped or extruded into an alkali solution, the chitin amine is precipitated, the seaweed plants dispersed in the solution is coated in the chitin amine, and alginic acid in the seaweed plants is also converted into the water-soluble sodium alginate. The biosorption material is used for treating heavy metal ions-containing waste water with a remarkable effect. The chitin amine can adsorb heavy metal ions by chelation, and sodium alginate in the seaweed plants can combine with heavy metal ions by forming water-insoluble salt. The adsorbed heavy metal ions can be conveniently separated from the waste water.
Owner:青岛海伽生物科技有限公司
Natural rubber processing wastewater deep biological denitrogenation apparatus and method
ActiveCN109650540ARealize processingAchieve recyclingWater treatment compoundsSpecific water treatment objectivesSludgeNitration
The invention discloses a natural rubber processing wastewater deep biological denitrogenation apparatus and a method thereof. wastewater firstly enters an anaerobic methane production reactor, and lots of organic matter in the wastewater is converted into CH4 to be released; then, in the low-oxygen biosorption section of an organic matter removal reactor, remaining organic matter in the wastewater is adsorbed into sludge; after sludge-water separation through a No.1 sedimentation basin, the deposited sludge part flows back to a high-oxygen bioregeneration section, organic matter in the sludgeis fully subjected to aeration and degradation, a supernatant in the sedimentation basin enters an AOAO reactor to undergo denitrification, anaerobic ammoxidation and nitration so as to achieve deepbiological denitrogenation; wastewater enters a No.2 sedimentation basin to undergo water-sludge separation, the supernatant is discharged, and part of the supernatant flows back as a nitration solution; part of deposited sludge in the No.1 and No.2 sedimentation basins enter an acid production tank to be fermented so as to generate volatile organic acid (VFAs), and a fermentation broth containingVFAs can be used as a high-quality carbon source for denitrification of the AOAO reactor. The above apparatus can reinforce deep nitrogen removal and also reduce energy consumption of the system andachieve energy recovery.
Owner:HAINAN UNIVERSITY +1
Preparation method and use of white-rot fungus mycelium biological adsorbent
InactiveCN104645941AAvoid the pitfalls of dealing with dyes individuallyEasy to prepareOther chemical processesWater contaminantsBiotechnologyLiquid medium
Owner:BEIJING FORESTRY UNIVERSITY
Biosorption material, preparation method and purpose thereof
InactiveCN102350310AReduce adsorptionImprove adsorption capacityFatty/oily/floating substances removal devicesOther chemical processesPetroleum PollutionMethods of production
A biosorption material, a preparation method and purpose thereof. The preparation method is by charring corn straw cores at 200-300 DEG C for 1-3 h. According to the invention, corn straw cores are modified through a physical method to substantially reduce adsorption to water, increase adsorptivity to petroleum; the corn straw cores are controlled to absorb petroleum first and has a fast petroleum adsorption speed. The production method is simple and practical, utilize pollution-free material and has low operation temperature and low energy consumption. The invention fully utilizes a lot of excessive and cheap corn straw to changing waste into valuables. The biological petroleum adsorption material made of corn straw core has small proportion, is convenient for transportation and recovery and floats on water surface without deformation; and absorbed corn straw cores can be used as industrial raw material or substitution energy. The material can realize rapid removal of water surface petroleum pollution and avoid large diffusion and secondary pollution of oil stain, and has important social, economic and ecological significance for marine protection, river ecology and environment.
Owner:大连大成生物科技有限公司
Magnetic cyclodextrin-carbon nanofiber composite material and preparation method thereof
InactiveCN104785215AImprove adsorption capacityHigh specific surface areaOther chemical processesAlkali metal oxides/hydroxidesIonHeavy metals
The invention discloses a magnetic cyclodextrin-carbon nanofiber composite material and a preparation method thereof. Nano magnetic metal or a nano magnetic metallic oxide is taken as a carrier, cyclodextrin is firstly subjected to surface modification, magnetic cyclodextrin is obtained, the magnetic cyclodextrin is bonded to functional carbon nanofiber, and a novel nano magnetic biological adsorption material is obtained. By the aid of the preparation method, space orderliness of molecular arrangement is improved, the specific surface area of the polymer is greatly increased, the binding site of ions or molecules with cyclodextrin molecules is increased, and the internal mass transfer process is reduced. The prepared nano magnetic adsorption material has the advantages of controllability of a surface structure, good stability, high adsorbing capacity, fast adsorption balancing, high probability of separation, reusability and the like, can be used for directional recovery of precious metal and rare-earth metal as well as separation and enrichment of heavy metal in wastewater and has good application potential.
Owner:SHANDONG UNIV
Anaerobic biological treatments
InactiveUS20050247622A1Treatment with aerobic and anaerobic processesCarbonaceous biochemical oxygen demandBiological oxidation
The present invention relates to the application of the biological adsorption and biological oxidation ability of both conventional wastewater treatment biological selection technology and, if desired, chemically-enhanced wastewater treatment biological selection technology to remove pollutants from precipitation-generated flows collected by a combined sanitary sewer system, a separate sanitary sewer system, and / or a combination of both systems for: (1) the biological adsorption and oxidation of suspended and dissolved pollutants as measured by standard methods tests for carbonaceous biochemical oxygen demand, and / or (2) the biological adsorption of all other dissolved non-conservative and conservative pollutants as measured by all other standard methods tests for such pollutants.
Owner:LONG DENNIS J +1
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