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182results about How to "Favorable for attachment growth" patented technology

Combined type ecological floating bed water purifying device

The invention relates to a combined type ecological floating bed water purifying device used for in-situ purification treatment of polluted water in rivers and lakes. A floating body frame of a floating bed is provided with a grid-like bamboo charcoal floating bed main board made of bamboo charcoal pieces which are processed intensely by a compound enzyme biological promoter before being used, and when the bamboo charcoal pieces are used, the bamboo charcoal pieces can quite well adsorb nitrogen and phosphorus in the water and effectively promote the attached growth of indigenous microorganisms in the water; grid holes on the bamboo charcoal floating bed main board are used as planting holes of plants, and various aquatic plants or economic plants with water purification function can be mixedly planted; and biological fillers are arranged on the lower part of the floating bed, and biomass-based materials which are natural vegetable fibers are used by biofilm formation of microorganisms. The device can greatly improve the capability of removing nitrogen, phosphorus and organic matters from the eutrophication water of the ecological floating bed device and has the characteristics of simple structure, convenient mounting and control, high water flow impact resistance and the like, so that the device is quite suitable to be used for the in-situ purification treatment of water in natural rives, lakes and reservoirs and scenic water.
Owner:TONGJI UNIV

Impact-resistant multiplication combined type coking waste water treatment process

An anti-impact multiplying combination coking wastewater treatment technique relates to a treatment method of coking wastewater. The coking wastewater is first qualified by a physical-chemical pretreatment to improve biodegradable property of wastewater; the composite technology of a biological carrier of active sludge is adopted to do anaerobic / hypoxia / aerobic decarbonization / aerobic nitrification biochemical combination treatment; suspended or floating folding ball-shaped fillings are arranged in biochemical reactors and when micro organism traits are abnormal or a great amount of foams existing in the reactor, micro organism active incentive agents are added to the reactor in interval to improve active sludge traits and organism film quantity; finally the water is treated by a physical-chemical advanced treatment to reach a top grade standard. The invention not only strengthens the removal of COD, ammonia-nitrogen, volatile phenol and other pollutants in the coking wastewater by biochemical treatment but also resists serious water quality impact and has the advantages of quick system startup, less foams in an aeration tank, small occupying space, low operation cost and stable and effective treatment to coking wastewater.
Owner:TONGJI UNIV +1

Method for preparing bio-carrier by porous foam polymer modification

InactiveCN102786710AAdapt to fixityAdaptive performanceChemical industryDispersed particle separationCross-linkPolymer modified
The invention discloses a method for preparing a bio-carrier by porous foam polymer modification. The method is used for coating bonding modification of porous foam polymers. The method comprises the following steps of adding one or more cationized porous high-adsorptivity functional materials and one or more cationized polyhydric hydrophilic functional materials into coating modification slurry, mixing the coating modification slurry and a cationic acrylic acid emulsion, carrying out coating bonding of the mixture on one or more porous foam polymers, and carrying out cross-linking curing to obtain the modified bio-carrier having strong adsorbability, hydrophily, surface active functional group diversity, positive surface charges and strong biocompatibility. The method provided by the invention is not limited by structures, shapes, aperture sizes and physical properties of foam polymers and can be widely used for external coating modification of multiple carrier materials. The method provided by the invention has the advantages of convenient and simple operation, low investment and making cost, excellent carrier performances and long service life. The bio-carrier obtained by the method can be widely used in fields of fixed attachment of various microorganisms, and enhanced biological treatment.
Owner:纪群

Double-layer artificial wetland system for strengthening sewage denitrification and dephosphorization and operation method thereof

The invention discloses a double-layer artificial wetland system for strengthening sewage denitrification and dephosphorization and an operation method thereof. The system comprises an upper layer of wetland, a lower layer of wetland, a water inlet and distribution system and an effluent collection system, wherein the upper layer of the wetland is filled with mineral filler, and the lower layer of the wetland is filled with biologic filler which is favorable for microorganisms to adhere to grow; the water inlet and distribution system is divided into to two branches, wherein one branch is distributed above the upper layer of the wetland, and the other branch is distributed on the interface of the upper layer of the wetland and the lower layer of the wetland; and the effluent collection system is distributed on the bottom of the lower layer of the wetland. The method comprises: waterfall aeration is carried out on sewage by one branch of the distribution system, then the sewage falls into the upper layer of the wetland to remove organic matters, ammonia nitrogen, phosphorus and the like to vertically seep into the lower layer of the wetland; in order to supplement a carbon source, a small strand of sewage is introduced into the lower layer of the wetland by the other branch of the distribution system to be mixed with the sewage seeped from the upper layer of the wetland for denitrification; and water is discharged from the effluent collection device after being processed. The invention occupies small area, has small possibility of being blocked and has favorable denitrification and dephosphorization effects and low investment operation cost.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

Carbon source carrier filler for repairing nitrate pollution of underground water

The invention provides a carbon source carrier filler for repairing nitrate pollution of underground water. The carbon source carrier filler is formed by cladding biological ceramsite surface with an organic carbon source coating. The coating of the carbon source carrier filler comprises the following main components of: by weight, 10-50% of a natural carbon source material powder, 10-20% of a solvent, 1-5% of trace element, 10% of animal glue, 0-5% of a deoxidant, 0-5% of a pH conditioning agent and 0-2% of a surfactant. The carbon source carrier filler prepared in the invention has good mechanical properties and biological endophilicity, can achieve the aim of long-acting sustained release of carbon source, is suitable for underground water in-situ and ex-situ remediation technologies, and can be used to effectively avoid the secondary pollution problem of additional carbon sources.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Preparation method of floating embedding bacterium agents for in-situ remediation of oil polluted water

The invention relates to a preparation method of floating embedding bacterium agents for in-situ remediation of oil polluted water, specifically relating to a technology for fixing oil degradation bacteria by using expanded graphite, sodium alginate and calcium chloride, absorbing and degrading to purify the petroleum polluted water. The preparation method of the floating embedding bacterium agents comprises the following steps: adding petroleum degrading bacteria liquid into sodium alginate sol containing the expanded graphite, mixing uniformly, dropping into calcium chloride solution and cross-linking overnight at 4 degrees centigrade to obtain the floating embedding bacterium agents fixing hydrocarbon degradation bacteria. The floating embedding bacterium agents prepared by the preparation method has the advantages of high mechanical strength, good floatability and mass transfer performance and high degradation efficiency; the floating embedding bacterium agents can be directly put onto the surface of the petroleum polluted water; the embedding bacterium agents can float on an oil-water interface for long term so as to ensure effective contact between the bacterium agent and the petroleum; the embedding technology increases the concentration of microorganisms, prevents the bacteria influencing by the water using environment, effectively improves the degradation efficiency, recovers and recycles conveniently and has no secondary pollution risk.
Owner:TONGJI UNIV

3D printing-based bionic artificial tooth and manufacturing method thereof

The invention discloses a 3D printing-based bionic artificial tooth and a manufacturing method thereof. The 3D printing-based bionic artificial tooth comprises a bionic dentin main body, a bionic enamel layer coating the upper end surface of the bionic dentin main body and a bionic cementum layer coating the bionic dentin main body, the bionic enamel layer is connected to the bionic cementum layer through a transition region, the outer surface of the bionic cementum layer is covered with a microstructure layer, and the microstructure layer comprises porous structures and barb structures staggered or irregularly distributed on the bionic cementum layer. According to bionic characteristics, solids with different gradient strength are molded in different implantation material areas so that stress interference between an implantation material and an alveolar bone is reduced. Through combination with a high freedom degree molding capability of the 3D printing technology, a completely personalized bionic dental implant is directly molded so that wearing comfort is improved. The barb structures and the porous structures are conducive to cell adhesion, growth and fixation, improve a bonding capacity of an implant and an alveolar bone and reduce adverse effects such as a dental implant falling risk after an operation.
Owner:SOUTH CHINA UNIV OF TECH

Scale production process of nitrobacteria in liquid of high activity and high stability

The invention discloses a scale production process of nitrobacteria in liquid of high activity and high stability wherein the process comprises, arranging flexible fiber in aerobiosis fermentation apparatus, employing culture medium containing low molecular organic carbon to accelerate the attached growth of the nitrifying bacteria, supplementing low molecular organic carbon source and nitrogen source in time, carrying out timely elution to the nitrifying bacteria on the soft fiber, conserving the collection liquid with the condition of low resolving oxygen, low pH and sealing strip, detecting and loading into packaging appliance.
Owner:韩舞鹰

Method for processing agricultural running water pollution by utilizing bank and compound system for processing running water pollution

The invention discloses a method for processing agricultural running water pollution by utilizing bank and a compound system for processing running water pollution. A multi-level infiltration bed is constructed at the lower end of an agricultural running water converging channel along the bank from top to bottom, and consists of aquatic plants at the upper part and fillers at the lower part, a sand settling-buffering tank is arranged in front of each level of infiltration bed for settling sand, after the sand settling process, running water enters the infiltration bed for infiltration process, and the running water processed by a multi-level sand settling-infiltrating system is finally discharged into soil or water body by a water outlet area at the tail part of the system. In the invention, the bank is fully utilized for buffering water flow impact, water inlet quality is homogenized, and the purifying effect of running water pollutant is improved. Besides the traditional advantages of simple construction, convenience in operation and management, low cost and the like, the invention also has the advantages of no energy consumption, difficult blockage, small investment, convenience in operation and management, and strong anti-impact and anti-load capability.
Owner:CHONGQING UNIV

A method for repairing micro-polluted water body and subsurface flow constructed wetland system

The invention discloses a method for remedying the micro-polluted water body. The method comprises the following steps: 1) the micro-polluted water body firstly enters a first-stage water treatment area to perform sand settling and uniform water distribution; 2) the water body secondly enters a second-stage water treatment area-wetland bed, wherein the wetland bed is mainly composed of filler anda water plant, the water plant is giant reed, the filler is composed of upper filler and lower filler, the upper filler is gravel and the particle size is 5-10mm; the lower filler is the shale brick,the particle size of the shale brick is 10-60mm and the root system of the water plant grows in the filler; and 3) the water body finally enters a third-stage water treatment area to homogenize the effluent quality, and the water body can be discharged and enter the outer water body. The system has the following advantages: (1) no energy is consumed, the system is difficult to block; (2) the investment is low, the system is convenient to operate and manage; (3) the shock resistance is strong; and (4) the nitrogen-phosphorus removal rate is high and the system has a certain economic benefit.
Owner:CHONGQING UNIV

Filter material for biological aerated filter and preparation method thereof

The invention relates to a filter material for a biological aerated filter, which comprises the following raw materials by mass part: 10-40 parts of sludge from a waterworks, 25-80 parts of sludge from a sewage treatment works, 3-15 parts of pore-forming agent, and 7-20 parts of binder. Since the sludge from the sewage treatment works has higher carbon content, and the particle surface forms a porous state by adding right amount of pore-forming agent, the filer material has better adsorption and removal effects for pollutants in wastewater. The prepared filter material has huge specific surface area, is favorable for the attached growth of microorganisms, and is a novel efficient filter material for the biological aerated filter.
Owner:HOHAI UNIV

Method of treating high-concentration metaformaldehyde waste water into reuse water

The invention discloses a method of treating high-concentration metaformaldehyde waste water into reuse water, relating to a treatment technology of high-concentration metaformaldehyde waste water. The pH of metaformaldehyde waste water of which the formaldehyde content is 4000mg / L into 3.0-4.0, then metaformaldehyde waste water is sent into an anaerobic hydrolysis composite reactor combining activated sludge with biomembrane and an aerobic composite reactor; at last, a double-membrane method is adopted to treat to ensure that effluent reaches the standard of urban wastewater recycling industrial water quality, thus serving as recirculated cooling water. The invention strengthens removal of high-concentration formaldehyde, COD, trioxymethylene, divinylene oxide and other pollutants in high-concentration metaformaldehyde waste water by biological treatment, can effectively resist impact from violent water yield and water quality, and has the advantages of high system starting speed, small foam of the aerobic composite reactor, low operation cost, stable and effective treatment and zero discharge of waste water.
Owner:上海中耀环保实业有限公司

Treatment system for wastewater without sewage sludge

The invention relates to a wastewater and sludge treatment technique, which particularly provides a sludge and wastewater free treatment system. The system comprises grilles, an aerated grit chamber, a hydrolysis acidification pond, an oxidation pond and a secondary sedimentation pond which are orderly connected, and the system also comprises a disinfection pond, a slag pond, a slag concentration tower and a sludge dewatering machine. When the system is operated, the wastewater passes through wide and narrow grilles to remove large impurities and enters the aerated grit chamber for sedimentation treatment, the discharged water enters the hydrolysis acidification pond; by a sludge bed in the hydrolysis acidification pond, the wastewater and reflux slag sludge are captured and the slag sludge is decomposed; the wastewater after the sedimentation treatment passes through a fixed type biological bed in the oxidation pond for biological treatment, the discharged water enters the secondary sedimentation pond for slag sedimentation, the discharged water after the slag sedimentation enters the disinfection pond for disinfection treatment, the water after the disinfection treatment can be discharged or reutilized, and the sedimentation slag is sent to the slag pond, and is concentrated by the slag concentration tower and is sent to the sludge dewatering machine for dewatering treatment. The sludge and wastewater free treatment system has the advantages of low equipment investment, low operating cost and good effect of wastewater treatment.
Owner:李波

Horizontal type three-phase biological fluidized bed and sewage treatment method thereof

The invention provides a horizontal type three-phase biological fluidized bed and a sewage treatment method thereof. According to the horizontal type three-phase biological fluidized bed, a water inlet and water distribution anaerobic zone, a high-load facultative biological treatment zone, a baffling zone, a low-load aerobic biological treatment zone and a settling pond are horizontally arranged from a water inlet end to a water outlet end, and moreover suspended biological stuffing layers are arranged inside other zones except the baffling zone. Sewage is fed into the water inlet and water distribution anaerobic zone, in an anaerobic environment, BOD organic maters in the wastewater are converted into a fermentation product by facultative fermentation bacteria, polymerized phosphate stored in the cells is decomposed by phosphorus-accumulating bacteria, and then the sewage is fed into the high-load facultative biological treatment zone to remove COD and nitrogen, is further fed into the low-load aerobic biological treatment zone to reduce phosphorus in the effluent, and is finally settled, clarified and filtered by the settling pond so as to obtain clean water. As all process steps are accomplished in one same horizontal pond, the land is saved, the phenomenon that equipment such as a pump and a valve is blocked when dispersed type stuffing is adopted to treat sewage is avoided, and a carrier is prevented from loss, piling or hardening.
Owner:WUHAN HUIZHONG DACHUAN AUTOMATIC CONTROL EQUIP CO LTD

Ceramic matrix degradable artificial bone biomaterial for 3D printing

The invention discloses a ceramic matrix degradable artificial bone biomaterial for 3D printing. The biomaterial is formed by compounding a bone morphogenetic protein, tricalcium phosphate, biological ceramic and polylactic acid in percentage by weight, wherein for different age groups, the weight percentages are different. According to the preparation method, the non-wire printing is adopted, the biological ceramic and tricalcium phosphate powder are mixed uniformly, furthermore, the polylactic acid and the bone morphogenetic protein are canned in a liquid state, mixed powder enters a printer by being absorbed through a vacuum guiding pipe of the printer, the polylactic acid (PLA) and the bone morphogenetic protein (BMP) which are canned in the liquid state are fully mixed with the mixed powder to form a polymer, and then a complex artificial bone biomaterial model is printed through a printer head.
Owner:金马丁明

High-efficiency slow-release carbon source modified corn cob, preparation method and application thereof

The invention belongs to the field of sewage treatment, and discloses a high-efficiency slow-release carbon source modified corn cob, a preparation method and application thereof, wherein a slow-release carbon source is prepared by modifying 8-10 parts by weight of corn cob with 80-90 parts by weight of alkaline hydrogen peroxide, and the preparation method is simple and quick, low in cost, and good in treatment effect. The prepared high-efficiency slow-release carbon source modified corn cob is loose in structure and increased in surface area, has a porous structure, and has a particle diameter of 8-12 mm and a density of 0.3-0.6 g / cm<3>; when the high-efficiency slow-release carbon source modified corn cob is applied to denitrification biofilters, the removal rate of nitrate nitrogen isas high as 90% or more than 90%.
Owner:JIANGSU LONG LEAPING ENG DESIGN

Excess sludge reduction bioreactor with variable aeration and worm attachment oblique plate

The invention discloses an excess sludge reduction bioreactor with variable aeration and a worm attachment oblique plate, which relates to a bioreactor for excess sludge reduction. The bioreactor solves the problems that that the conventional excess sludge reduction device has low oxygen utilization rate, poor aeration adjustment, easy worm drop, low growth density of worm colony, difficult discharge of inert substances and the like. An automatic gas flow adjustor which is well arranged can automatically adjust the air flow entering a plurality of variable micropore aeration pipes according to the dissolved oxygen concentration of sludge mixed solution in a container, thereby realizing variable aeration for the sludge mixed solution in the container; the dissolved oxygen concentration of the sludge mixed solution can be kept at the maximum dissolved oxygen concentration of the worm sludge reduction through the variable aeration; and a plurality of variable aperture vent holes are uniformly distributed on the variable micropore aeration pipes, and the variable range of the diameters of the vent holes is 0.2 to 0.8 millimeter. The excess sludge reduction bioreactor integrates the worm attachment oblique plate and the variable aeration so as to greatly improve the sludge reduction effect, and the sludge reduction reaches over 90 percent.
Owner:HARBIN INST OF TECH

Integrated ecological floating bed and riverway water body purification method

The invention discloses an integrated ecological floating bed and a riverway water body purification method. The ecological floating bed includes a floating framework, a floating plate mounted on the floating framework and provided with a plurality of planting holes filled with a plant cultivation matrix, a bamboo charcoal plate placed on the floating plate and provided with through holes in one-to-one correspondence with the planting holes, a plurality of elastic fillers hung below the floating plate, and an aeration system and a microbial tank which are arranged in the elastic fillers; the microbial tank internally contains faculative bacteria. The technical problems that a traditional ecological floating bed has plant growth limited by many limiting factors, the oxygen content in natural water bodies is insufficient, and the number of microorganisms in an ecological floating bed system is insufficient are solved.
Owner:ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE

Coking wastewater treatment method

A coking wastewater treatment method is as follows: coking wastewater pretreated by a gravity degreasing tank and an air flotation degreasing tank is treated by collaborative Fenton oxidation and coagulation precipitation by use of a sequencing batch membrane bioreactor, metallurgical slag with 1 / 8 to 1 / 6 of effective volume of the reactor are added into the sequencing batch membrane bioreactor, metallurgical slag accounted for 0.3%-0.8% of the metallurgical slag amount is supplemented into the sequencing batch membrane bioreactor every 10-15 days, iron mud precipitate produced by Fenton reaction is refluxed into the sequencing batch membrane bioreactor every 5-7 days, and the reflux amount is 6% to 8% of the reactor sludge amount; the sequencing batch membrane bioreactor is anoxically stirred for 7-8h in every cycle, aerobic aeration time is 15-17h, and the residence time is 70-73h. According to the method, by use of the flocculation effect of iron hydroxide floc, wastewater treatment effect is strengthened, alkalinity consumed in nitrification process can be mitigated, and the iron mud precipitate produced by the reaction can be recycled, meanwhile by taking advantage of adsorption precipitation performance of the metallurgical slag, purposes of improvement of wastewater treatment effect and reduction of wastewater treatment costs can be realized.
Owner:ANGANG STEEL CO LTD

Fiber carrier and preparation method and application thereof

The invention provides a fiber carrier and also provides a preparation and application of the fiber carrier. The fiber carrier comprises polymer fiber and a collagen coating which covers the surface of the polymer fiber. The diameter of the polymer fiber is 15-30 microns, and the thickness of the collagen coating is 1.5-300 nm. The fiber carrier has large gap, high mechanical strength and good hydrophily. The fiber carrier is a fiber carrier with excellent properties and for cell culture. The preparation method of the fiber carrier has simple steps, has no high requirements on instruments and equipment, and is suitable for various scales of production.
Owner:ZHUJIANG HOSPITAL SOUTHERN MEDICAL UNIV

Carbon fiber microalgae cultivating system using wastewater resources

A carbon fiber microalgae cultivating system using wastewater resources comprises a wastewater resources conveying subsystem, an algae cultivating pond, a biomass collecting subsystem, a drying system, outward transportation, a carbon fiber water quality regulating reservoir, a CO2 charging system, an illuminating system, a water quality and water quantity monitoring system, a wastewater resource regulating and controlling subsystem and the like, wherein the regulating reservoir is used for reducing the concentrations of organic matters and nitrogen and phosphorus pollutants in the wastewater resources, removing suspended matters, heavy metals and toxic substances and increasing the transparency of a water body; and the cultivating pond is used for cultivating biomass for high-yield oil and high-protein attached algae and microalgae, and thus the nitrogen and phosphorus are further degraded and the CO2 is fixed by the high-yield oil and high-protein algae. The carbon fiber microalgae cultivating system disclosed by the invention is an integrated product and equipment system for realizing water quality purification, algae cultivation and reduction and emission of greenhouse gases by using the wastewater resources; the technical bottleneck of eutrophication water body control and CO2 reduction and emission is solved; the economic pressure of governing water containments and the greenhouse gases is retarded; and the maximization of environment benefit, economic benefit and social benefit is realized by fully utilizing the wastewater resources.
Owner:武汉环天禹生物环保科技有限公司

Rapid manual land infiltration treatment system and method for purifying river water by applying the same

The invention relates to a rapid manual land infiltration treatment system and a method for purifying river water by applying the same. The treatment system consists of a water inlet pump, a regulating tank, a flow meter, an infiltration tank, a water collecting tank, a water distribution pipe entering the infiltration tank, and a water collecting pipe flowing out of the infiltration tank. Natural sand and at least one of zeolite and lava are used as a filling of the infiltration tank. When in operation, the infiltration tank is biologically domesticated and cultured by means of natural biofilm culturing in advance, is alternatively water-flooded for 12 to 72 hours, and are dried for 12 to 72 hours in 20 to 80 days in total of domestication; river sewage enters the regulating tank after being pumped by the water inlet pump, and are settled for 0.5 to 5 hours in the regulating tank; the settled sewage is distributed by the water distribution pipe and freely flows into the infiltration tank; after the settled sewage is water-flooded for 12 to 72 hours and dried for 12 to 72 hours, the infiltration solution is collected by the water collecting pipe and is then discharged into a river.
Owner:北京市水利科学研究所

Artificial ecological coral reef and construction method for same

An artificial ecological coral reef is a hollow naked reef. The hollow naked reef is provided with a table-like housing; a plurality of supporting columns are fixedly connected to the bottom of the table-like housing; a plurality of communication holes with various sides are formed in the wall surface of the hollow naked reef; a plurality of embedded plate passing through the wall surface of the hollow naked reef are fixed on the wall surface of the hollow naked reef; the embedded plates extend certain length out of the interior of the hollow naked reef; and surface attached layers are fixed on the internal and external wall surfaces of the hollow naked reef. By the use of the artificial ecological coral reef, coral young bodies can easily attach and grow and coral transplantation can be facilitated; coral reef organism inhabiting, sheltering and growth and breeding can be facilitated, so an independent and comprehensive coral reef ecological chain with stability can be formed; and the artificial ecological coral reef can work as an independent reef and group reefs.
Owner:GUANGDONG OCEAN UNIVERSITY

Spherical haydite matrix for constructed wetland and its preparation method

The invention discloses a preparation method of spherical haydite matrix for constructed wetland, which comprises removing impurity and particles in coagulated sludge at the terminal of a water supply plant to give sludge paste; completely mixing kaolin with the treated sludge, regulating the water content of the sludge to 60-65%, and preparing spherical haydite with particle size of 15-18 mm and25-28 mm by using the sludge, wherein per 1 kg of dry sludge is mixed with 0.60-0.70 kg of kaolin; and preheating at 200 DEG C for 1h, and sintering at 600-700 DEG C for 120-150min to obtain the final product with particle size of 8-10mm and 15-18mm. It is proved by the experiment that the matrix prepared by the method can remove COD (chemical oxygen demand), ammonium nitrogen and total phosphorus in wastewater effectively without matrix plugging, and is suitable for treatment of domestic wastewater, industrial and agricultural wastewater and polluted surface water. The treated wastewater reaches the first-level A standard of discharge standard of wastewater for municipal wastewater treatment plant.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Preparation method of cobalt carbonate for battery

The invention discloses a preparation method of cobalt carbonate for a battery. The preparation method comprises the following steps of: firstly adding an ammonium bicarbonate solution as a base solution; then adding a cobalt liquid for the neutralization precipitation reaction again; adding the ammonium bicarbonate solution and the cobalt liquid at the same time to a reaction system by adopting a simultaneous feeding mode till the pH of the reaction system is 6-7; moreover, keeping the pH of the whole system to be stabled to be 6-8 in the feeding process; also monitoring the dimension of cobalt carbonate particles; stopping feeding when D50 in the average particle size distribution index of cobalt carbonate reaches the stipulated requirement, thus the whole neutralization precipitation reaction is finished; and filtering and drying discharged materials after the reaction products in a reaction tank is subjected to heat preservation and aging continuously, thereby obtaining the required cobalt carbonate. The preparation method provided by the invention is simple and has low cost, two stage matching of the neutralization precipitation reaction is reasonable, the appropriate matched parameters are optimized, thereby preparing and obtaining the similar-spherical cobalt carbonate with great apparent density and uniform and controllable particle size.
Owner:GUANGDONG JIANA ENERGY TECH CO LTD

Method of preparing Ti ceramic nano membrane on medical stainless steel

This invention relates to a method for manufacturing titanium ceramic nanofilm on medical stainless steel substrate. The method comprises (1) polishing the medical stainless steel substrate, and placing the substrate on a water-cooling rotatablr sample holder of IBAD equipment, (2) evacuumizing, and sputtering substrate for 15 min by 1 keV nitrogen ion beam, and (3) applying a high-energy ion bombardment (4-60 keV, 2-10 mA) for 10-20 min and a low-energy ion bombardment (50-350 keV, 10-30 mA) for 60-180 min as an assisting deposition while sputtering the titanium target by argon ion beam (3 keV, 80 mA). During the deposition the sample holder keeps rotating, the background vacuum is better than 0.001 Pa, and partial pressure of nitrogen is 0.008 Pa. The obtained TiN nanofilm has such advantages of high hardness, good abrasion resistance and cell compatibility, thus can be used as a substitute for hard tissue to be implanted into human bodies.
Owner:TIANJIN NORMAL UNIVERSITY

Constructed wetland padding brick and preparation method thereof

The invention discloses a constructed wetland padding brick and a preparation method thereof and belongs to the field of sewage treatment. The brick is a hexagonal prism with side length of 8-12cm and height of 40-50cm. The preparation method includes proportionally adding and evenly stirring, by mass, 10-15% of limestone with particle sizes of 2-8mm, 30-40% of coal cinder with particle sizes of 3-10mm, 5-10% of coal ash with particle sizes smaller than 2mm, 15-20% of clay with particle sizes smaller than 2mm, 15-25% of volcanic rock with particle sizes of 3-8mm, 5-10% of modified infusorial earth with particle sizes of 2-8mm and 10-15% of water at normal temperatures, pouring slurries into a corresponding mold, performing compression molding under the pressure of 80-120Pa / mm<2>, and then performing demolding and natural air drying to obtain the constructed wetland padding brick. The brick is applicable to constructed wetlands, simple in structure, convenient to install and transport, unobstructed in water flow, stable in treating efficiency and capable of preventing blocking and facilitating apposition growth of microorganisms.
Owner:JIANGSU UNIV

Sand-fixing and wave-breaking hydraulic-filled island-reef revetment made of basalt fiber

InactiveCN106012973AAttenuation of incident wavesPlay a role in breaking the wavesCoastlines protectionEcological environmentOyster
The invention discloses a sand-fixing and wave-breaking hydraulic-filled island-reef revetment made of a basalt fiber. The revetment comprises fixing vertical columns, a solidification layer, porous wave-breaking pipes, a basalt tied rebar grid layer and crisscross water-blocking rods, wherein the porous wave-breaking pipes are vertical hollow pipes; symmetrical wave-breaking holes are formed in the pipe walls of the vertical hollow pipes; and the fixing vertical columns, the solidification layer, the porous wave-breaking pipes and the crisscross water-blocking rods are all formed by pouring cement onto basalt fiber tied rebars and then coating the cement-poured basalt fiber tied rebars with basalt impermeable geotextile. The revetment disclosed by the invention is environmentally friendly, modular in production, light in weight, resistant to corrosion, short in construction period, convenient to construct and strong in anti-wave capability; the revetment is made of a basalt fiber composite, and the basalt fiber is not only relatively high in mechanical property but also strong in corrosion resistance, relatively high in cost performance, long in service life and free of secondary pollution; and therefore, not only is the surrounding ecological environment protected from damage, but also the apposition growth of oysters, corals and other sea creatures is facilitated.
Owner:三沙蓝立方海洋科技发展有限公司

Honeycomb modified biological stuffing applied to water treatment and preparation method thereof

The invention discloses a honeycomb modified biological stuffing applied to water treatment and a preparation method thereof. The stuffing is prepared from a macro molecule base material, the cross section of the stuffing is of a honeycomb structure, and activated carbon particles are embedded in and distributed on the internal and external surfaces of honeycombs of the stuffing. Compared with common biological stuffing in the prior art, the modified honeycomb biological stuffing has the advantages that hydrophily is stronger, the mass transfer performance and the attached biomass are increased, the aeration impact resistance and the load impact resistance are improved, and the microorganisms are easily attached and grow, thereby shortening the biofilm formation period.
Owner:上海立源生态工程有限公司 +1

Method and equipment for treating antibiotic mycelium residues

The invention provides a method and equipment for treating antibiotic mycelium residues. According to the method, the antibiotic mycelium residues and water are prepared into a mycelium residue suspension which is subjected to anaerobic fermentation treatment. The invention also provides the equipment for treating the antibiotic mycelium residues, and the equipment comprises a residue water generating device, an anaerobic fermentation device, a gas-liquid separation device positioned above the anaerobic fermentation device, a biogas collection device positioned above the gas-liquid separation device and a riser pipe for communicating the gas-liquid separation device and the anaerobic fermentation device. By using the method and equipment for treating the antibiotic mycelium residues, the mycelium residue suspension obtained after the mixing of the antibiotic mycelium residues and the water is subjected to anaerobic fermentation treatment, so that the inhibition of harmful substances of anaerobic fermentation antibiotics and the like in the conventional antibiotic mycelium residues is overcome, the amount of preponderant bacteria is kept to the utmost extent, the efficiency of anaerobic fermentation is improved, and the method and the equipment have the advantages of small floor area, simple operation, low cost and the like.
Owner:ZHENGZHOU UNIV +1
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