491 results about "Filtration technique" patented technology

The invention belongs to the field of network resource management, relates to the cooperative filtration technique of network resources and discloses a network resource personalized recommended method based on an ultrafast neural network. The network resource personalized recommended method based on ultrafast neural network comprises the following steps: firstly, data preprocessing, reading information from the journal files of a system user and generating a global user interested matrix, exchanging the global user interested matrix into a single user interested matrix of a current user, and then transforming and reducing dimensionality to mark out a training set A1 and a predicting set A2, secondly, model training, building an interest predicting model with single hidden layer neural network SLFN s structure for a target user, adopting ultrafast learning machine technique to carry out training on the training set A1 and getting various connection power values and hidden layer threshold values of the neural network model with single hidden layer, thirdly, prediction recommending, utilizing the obtained predicting model to calculate the scoring values of every resource in the predicting set A2 given by the target user and then recommending the first several resources with highest predicting scores to the target user.

The present invention relates to method of treating soybean processing waste water by using membrane filtration technique, the soybean processing waste water is pretreated through pH value regulation, centrifuge, prefiltration, microfiltration, and temp regulation etc; then the pretreated soybean processing waste water is passed through ultrafiltration membrane system under pressure to extract soybean lactoalbumin; then the filtrate from ultrafiltration membrane is passed through nm filtration membrane system under pressure to extract soybean oligosaccharide which is further decolorized; the filtrate from nm filtration membrane system is post treated to obtain water suitable for use in production or water conformed with state discharge standard. Advantages: low cost, high purity of soybean lactoalbumin and oligosaccharide.

Assay devices, kits, and methods for detection of one or more analytes in a sample are provided. The assay device features the controlled release of reagents and hence is particularly suitable for binding assays such as immunoassays. The assay device achieves greater sensitivity than conventional rapid test assays, leading to stronger and/or more stable visual signals than those produced by conventional devices, easier interpretation of results, and reduced occurrence of indeterminate results. The device can be used for detecting analyte in a variety of biological samples without the need for conventional sample filtration techniques, and thus is suitable for use by untrained personnel without specialized equipment. In addition, the device can be used to simultaneously analyze a number of analytes using a single sample.

Air cooling passages for a gas turbine engine component, and in particular, a blade outer air seal, are provided with a filtering technique to filter impurities before they can reach a metering location. The air filtering techniques include the provision of a plurality of openings which each have a small cross-sectional area when compared to the cross-sectional area of the metering location. These small openings will filter out impurities before they reach the metering location. The metering location has a cross-sectional area that is greater than the cross-sectional area of any one of the openings, however, the total cross-sectional area of the plurality of openings exceeds the cross-sectional area of the metering location such that adequate air is supplied even if several of the openings are clogged.

This invention relates to the purification of monoclonal antibodies from mammalian cell culture fluid utilizing sequential, orthogonal chromatography and filtration techniques resulting in material of high purity and quality that is suitable for human administration. The method involves capturing an IgG product using immobilized protein A affinity chromatography, followed by at least one ion exchange technique prior to adsorbing the IgG to hydroxyapatite and selectively eluting the product in a single isocratic step to achieve purification from impurities and simultaneously reducing multiple types of impurities including but not limited to IgG aggregates, residual protein A, non-IgG proteins, host cell proteins, viral particles, and DNA

A method and apparatus is provided for the purification of water, in particular to the removal of surfactants and optionally organic, inorganic and/or biological contaminants from water using adsorption filtration techniques.

The present invention relates to carbon nanotubes-metal nano composite by chemical route and the corresponding development of strong and flexible, light weight, self-supporting anode through simple vacuum filtration technique, which is favored by the high aspect ratio of the Multi-walled carbon nanotubes. The self-supported anode has an added advantage that it can be used as electrodes without binder and electrical conductor (unlike other carbonaceous powder materials) that helps us to elucidate the precise electrochemical properties. The metals used can be Sn, Si, Al, etc. The developed high capacity, free-standing anode can be used in rechargeable Li-ion batteries and is demonstrated successfully in powering solar lantern.

The invention discloses a wastewater recycling method for paper making industry, and combines membrane technique with industrial water treatment technique. The invention comprises the steps of micro-filtration technique stage, an ultra-filtration technique stage and a reverse osmosis membrane technique stage. The micro-filtration technique stage can pretreat the discharged wastewater of paper making treated by a biochemical system, and remove the impurities of raw water. The ultra-filtration technique stage is used for the treatment of pretreated permeation liquid with ultra-filtration membrane, to further eliminate suspensions and macromolecular particulates. The reserve osmosis membrane technique stage is used for further pressurizing the permeation liquid and desalting through the reserve osmosis membrane and getting rid of COD, thus obtaining ultrapure water for a boiler used in production or permeation liquid used in paper making technique. The invention can thoroughly recycle water resource, and the indexes of the permeation liquid can reach the drinking standard of China, which can absolutely be applied to ultrapure water for the boiler used in production or paper making technique. The invention is applied to advanced recycling of discharged wastewater after wastewater treatment in paper making industry, and is also suitable for advanced recycling of discharged wastewater after wastewater treatment in such industries as printing and dyeing, iron and steel and chemical engineering, etc.

A method for producing food level condensed soybean phospholipids belongs to the field of soybean phospholipids. The invention comprises: taking feedstuff level soybean phospholipids as raw material, dissolving with nonpolar solvent such as N-hexane or ligarine, decolorizing with food level H2O2, removing ethylether insoluble substance influencing the product transparence with inorganic membrane filtration technique (including inorganic ceramic membrane and stainless steel membrane), and evaporating to obtain the light-colored final product with good transparence and low ethylether insoluble substance content (less than 0.2%, while 0.3% as the abroad product index). The invention establish a complete technology for producing food level condensed soybean phospholipids with high quality with feedstuff level soybean phospholipids as raw material through discolorations, filtration and de-dissolve.

The invention discloses a method for preparing cannabidiol-containing hemp extract. The method comprises the following steps: taking mature industrial hemp seeds, drying the hemp seeds, removing impurities, and crushing the hemp seeds for later use; carrying out extraction on the crushed hemp seeds with ethanol with the concentration being 95-100% (V/V) according to a solid-liquid ratio of 1:5 to1:20; filtering the obtained extract, and carrying out reduced pressure concentration to obtain industrial hemp seed extract; dissolving the obtained hemp seed extract in ethanol, and carrying out low-temperature winterization; centrifuging the obtained winterized suspension by using a centrifuge or a filtration technique; decolorizing a supernatant obtained after the centrifugation by using activated carbon, and filtering the supernatant; and carrying out rotary evaporation on a filtrate obtained after the filtration to obtain the cannabidiol-containing hemp extract. The product obtained in the invention has the advantages of high CBD content, good color and good physiological characteristics. The method has the advantages of simple process, easiness in industrial application, and promotion of the development and utilization of high added value products of hemp.

A millipore ceramic filter is composed of a casing with inlet and blow-off outlet, and a combined filter core consisting of a fluid collecting pipe, multiple millipore ceramic plates with two filtering surfaces and installed to said fluid collecting pipe, and a washing unit consisting washing devices (one for each ceramic plate). Its advantages are high throughput, large filtering area, long service life and low resistance to fluid.

The invention provides equipment for preparing white carbon black by a gas phase method and a method for preparing the white carbon black by using the equipment. The equipment successively comprises a raw material preheater, a raw material mixer, an injecting device and a high temperature hydrolysis furnace, and is characterized in that the part between the injecting device and the high temperature hydrolysis furnace are connected and sealed by a seal connecting piece, and the injecting device is arranged between the raw material mixer and the high temperature hydrolysis furnace.In the high temperature hydrolysis furnace of the invention, the seal combustion technology, the water cooling jacket type cooling technology, the unique deacidification technology and the advanced filtering technology are utilized, so that the obtained white carbon black has small fluctuation on the special surface area, the production efficiency is improved and the energy is saved greatly.

The invention discloses an instant green tea and a production process. The process comprises the following steps: extracting, primary separating, centrifuging or ultrafiltering, nanofiltering, RO (reverse osmosis) concentrating, VO concentrating, UHT (ultra heat treating) and sterilely filling to produce tea juice or atomizing drying to produce tea powder. By adopting the a combined film filtering technology of ultrafiltering, nanofiltering and reverse osmosis, the bitter taste of the green tea extract prepared without an organic solvent to extract is reduced, the cold dissolubility of the green tea extract is improved, the traditional processing method is improved, the bitter of the green tea is greatly reduced, and the product aroma is more unique.

The invention relates to a complex printing and dyeing wastewater quality-divided treating and reusing integrated technology. The technology comprises two parts of quality-divided treating and quality-divided reusing, the whole technical process is realized through an automatic detection and control mode. For the characteristics that wastewater in a textile printing and dyeing garden is large in water quality change, high in chromaticity, difficult to biologically decompose and high in inorganic salt content, an existing efficient ozonation technology, an ultrafiltration-reverse osmosis membrane technology, an economical biochemical treatment technology, a double-tower filtration technology and an cation and anion exchange technology are integrated and optimized, for meeting the water quality requirement of water used in all processes of the garden, and efficient and low-cost treatment of the printing and dyeing wastewater is achieved by means of quality-divided treating and quality-divided reusing. Compared with a traditional treatment technology, though the water is more complex, high in chromaticity and difficult to decompose, treatment cost is lower, and the reuse rate of reclaimed water is larger and can reach 70-80%.

The present invention relates to a sugar making process for refining cane mixed juice by use of a membrane separation technology. The process comprises: heating cane mixed juice; adding an alkaline substance into the heated cane mixed juice to regulate the pH value;separating suspended impurities such as bagasse and the like from the cane mixed juice; collecting a separated liquid phase; removing suspended impurities with small particle sizes, macromolecules, colloids and the like through filtration of a microfiltration membrane; putting the collected filtrate into an ultrafiltration membrane with the molecular weight cutoff greater than that of sucrose; removing pigments and non-sugar substances with molecular weight greater than that of sucrose; using a nanofiltration membrane with the molecular weight cutoff less than that of sucrose molecules to concentrate a decolorized clear liquid; and removing inorganic salts with molecular weight less than that of the sucrose, monosaccharide and the like by virtue of the nanofiltration membrane. Compared with the traditional process, the process provided by the present invention is capable of greatly reducing the chroma and turbidity of the sugar juice, greatly reducing the content of nonsugar macromolecular substance in the sugar juice, and increasing the purity and yield of sucrose, and is free of clarifying agents such as lime and the like in the main process.

The invention provides a sewage treatment device which comprises a shell, a support board, a compound filling material in the shell, a water inlet pipe, a water outlet pipe, a perforation aerator and an air supply device. The sewage treatment device is characterized in that the shell is internally provided with a center barrel in which a water distributor and a micro-electrolysis filling material are arranged, and the micro-electrolysis filling material and the bottom of the center barrel are located on the support board; the water inlet pipe is connected with the water distributor; a water colleting sump which is of a ring shape and is upwardly opened encircles the periphery of the upper part of the center barrel; one end of the water outlet pipe is connected with the water colleting sump, and the other end of the water outlet pipe penetrates through the shell to be led out; a center draft tube the upper and lower ends of which are opened is connected to the lower part of the support board; the center draft tube is internally provided with a doser, and a dosing tube connected with the doser upwardly penetrates through the center barrel and then is led out from the upper part of the shell; and the compound filling material in the shell encircles the periphery of the center barrel and is divided into upper and lower layers to be supported by the support board. The sewage treatment device has a reliable and compact structure; a micro-electrolysis technique and a biological treatment technique as well as a filtration technique are organically combined; and the effluent quality is good, and the efficiency is high.

The invention relates to an advanced water treatment technique for pollution removal through heterogeneous catalytic ozonation. Directed at the disadvantage that a conventional powdery catalyst is unfavorable for realizing separation and inactivation in a water phase, an assembly method for a novel manganese-cobalt complex oxide nanoparticle catalyst-loaded ceramic membrane is provided. The assembly method aims to combine heterogeneous ozonation with a ceramic membrane filtration technique, and utilizes a ceramic membrane structure and active components (MnO2 and Co3O4) on a catalytic layer to catalyze ozone so as to generate -OH with high oxidation capacity, wherein organic compounds can realize reinforced removal of pharmaceutical and personal care products (PPCPs) like 2-hydroxyl-4-methoxybenzophenone in water through direct reaction with molecular ozone or reaction with -OH generated by ozone decomposition; meanwhile, ozone can react with humic acid and natural organic matters (NOMs) in the water, so the formation of membrane pollution is effectively controlled. The manganese-cobalt complex oxide nanoparticles are loaded on the surface of the ceramic membrane, so separation of the catalyst from the water is realized, and a novel method for cleaning and repeated use of the catalyst is provided.

The invention discloses a wastewater recycling method of metal smelting plant based on film filtering technique, which comprises the following steps: providing a improved waste water processing craft of metal smelting plant; adding water disposal coagulator into waste water; forming alum flower; filtering the waste water; removing big particle foreign matter; filtering through fabric filtering element; removing suspended matter and small foreign matter; pumping into ultra filtration system; filtering; removing minute suspended matter, organic matter and bacteria and so on materials; getting ultra filtration dialysate and concentrated liquid; pumping dialysate into sodium filter (or hyperfiltration )system; filtering; removing heavy metal, calcium ion; getting sodium filter (or hyperfiltration) dialysate and concentrated liquid; merging concentrated liquid; storing in water tank; coagulating sedimentation; discharging.

The invention provides pure milk with a super-long shelf life and a preparation method thereof. The preparation method at least comprises the following steps of standardization, pasteurization, cooling, storage, ultra-heat treatment, cooling and filling, wherein the standardization adopts a production process of a membrane filtration technology combining RO (reverse osmosis) and UF(ultra filtration) so as to adjust indexes, and the ultra-heat treatment adopts a post-homogenization process, and the first-degree homogenization pressure is 250-400bar and the second-degree homogenization pressureis 50-100bar. The pure milk with a super-long shelf life is prepared by the preparation method. The preparation method of the pure milk with a super-long shelf life provided by the invention mainly adopts RO membranes and UF membranes to carry out separation of milk components, adopts a process of recombining the components after the separation, and adopts the UHT post-homogenization process, so that the method not only can ensure that the fat of milk products do not severely float and cake during a long shelf life of 9 to 12 months, but also can ensure a strong mouth feel of the products at the same time.

This invention relates generally to the fields of separation and conversion technologies, and more particularly to materials for use in tangential-flow filtration techniques. The tangential-flow materials are useful in a wide range of separation and conversion processes, including those reliant on reverse osmosis, microfiltration, ultrafiltration, or nanofiltration semipermeable filtration membranes, and provide efficient methods for purifying or producing various target substances, including biopolymer particles for use in tangential-flow filtration.

The invention provides a combined device for gas cleaning with filled ball carrying nanometer titanium oxide. Sais device comprises shell, the side face of shell is equipped with air inlet, the middle part is provided with ultraviolet lamp, bottom is equipped with clean air outlet, and the place between shell and ultraviolet lamp is filled with glass bead coated with nanometer titanium oxide. The invention combines photocatalytic oxidation with absorption and filtering to clean room air, the device can be used in room air cleaner to increase clearance of pollutant in air. The device is mainly used for room air cleaning, especially clearing organic chemical matter caused by room finishing.

The invention relates to a synthesis method and a synthesis device for a gas phase white carbon black. The synthesis device for the gas phase white carbon black consists of a combustion furnace, a lithium bromide set and a freezing hydrochloric acid circulation system. The combustion furnace is connected with the lithium bromide set through a return pipe and a water pipe; the upper part of the other end of the lithium bromide set is connected with the freezing hydrochloric acid circulation system through a return pipe and a water pipe. The silicon halide, air and hydrogen after preheating is continuously input to the sealed combustion furnace for pyrohydrolysis, so gas and solid mixture of the white carbon black is obtained, and the generated heat is taken away by a water cooling jacket of the combustion furnace. Compared with the prior art, the invention provides a single set of 4,000T/a gas phase white carbon black synthesis technology, and adopts seal combustion technology, water cooling jacket cooling technology, deacidification technology and filtering technology to improve the production capacity. The production device can perform long-period production, the heat energy is fully used, and the consumption is reduced. The product quality is very stable, and the difference from overseas products is greatly shortened.

The invention relates to an integrated membrane treatment and recovery technology and apparatus for waste acid in production process of titanium dioxide, and specifically relates to recovery of metatitanic acid, ferrous sulphate, sulfuric acid and other valuable resources in waste acid generated in the production process of titanium dioxide by using the integrated membrane treatment technology, and belongs to the field of production of titanium dioxide. The technology and apparatus aim at sulfuric acid of high concentration with high ferric salt content, a plurality of separating technologies are used, and traditional technologies (crystallization and filtering technology) are integrated, so that the ferric salt in the waste sulfuric acid is removed, sulfuric acid is condensed to about 70%, usage efficiency of sulfuric acid is improved, and water of high quality is produced for reuse process.

The invention discloses a highly integrated hollow fiber column filter, which belongs to the technical field of filtration in water treatment, and mainly includes a water inlet, a shell, a hollow fiber column, a water outlet, an air inlet, a first partition, and a second partition. Several hollow fiber columns are distributed in a circle in the housing. During normal filtration, the water inlet and outlet are opened, and the air inlet is closed. The filtered water passes through the hollow fiber columns covered with filter cloth from outside to inside, and impurities in the water are retained when passing through the filter cloth. . When backwashing, the clean water flow is opposite to that of filtration, and the filter cloth is backwashed from the inside to the outside, and the air inlet is opened at the same time, the backwashing gas enters the air cavity from the air inlet, and is distributed through the air distribution pipe on the second partition to the The air in each hollow fiber column and the air distribution pipe strongly sweeps the fibers on the filter cloth, and the backwashing of the backwashing water flow and the strong sweeping of the air flow are carried out at the same time, resulting in a good backwashing effect. Compared with the prior art, the invention has many advantages such as good regeneration effect and good effluent quality.

The invention discloses a combined multifunctional filtering device, belonging to the technical field of filtration. The key points of the technical scheme are as follows: a tank body of the combined multifunctional filtering device is internally separated into a sand stone medium filtering cavity, a wedge-shaped net-type filtering cavity and a clean water collecting cavity by an upper baffle and a lower baffle sequentially from top to bottom; the outer side of the tank body is provided with an upper pressure-difference switch, a lower pressure-difference switch and a control cabinet respectively; the bottom of the tank body is provided with a tank body support frame. The combined multifunctional filtering device is compact in structure, and meanwhile has advantages of the sand stone medium filter and a brush-type cleaning filter, the occupied area is small, the water flow is smooth, the head loss is low, and the automation degree is high, meanwhile, uniform fertilize uniformity and air entrapping backflushing can be realized, the device utilization ratio is increased, the number of auxiliary equipped devices is reduced, and the cost is saved.

The invention relates to a drinking water purifying device combining photocatalysis and inorganic membrane filtration technology, comprising an active carbon filtration assembly, an inorganic membrane filtration assembly and a photocatalysis membrane assembly. Water flows into the active carbon filtration assembly and then passes through the inorganic membrane filtration assembly, and finally, purified drinking water flows out of the photocatalysis membrane assembly. The inorganic membrane filtration assembly and the photocatalysis membrane assembly are both mounted vertically to prevent sediment from polluting membranes and avoiding dead flow areas; the active carbon can be soaked in edible alcohol for being utilized repeatedly; the inorganic membrane of the inorganic membrane filtration assembly has high mechanical strength and can resist corrosion; and all assemblies of the device have long service lives and have no needs of frequent cleaning and replacement. The invention adopts the photocatalysis membrane action for sterilization, has good effect, can purify water in depth, loads phtocatalyst on stainless steel or the inner wall of a glass tube and adopts an ultraviolet source to inspire the photocatalysis membrane to react so as to achieve the purpose of sterilization and trace organic matter degradation, have no problems of catalyst separation, and can not cause second water pollution.

The invention discloses a method for separating alpha-ketoglutaric acid from a conversion solution, which comprises the following steps: sequentially carrying out ceramic filtration, ultrafiltration and reverse osmosis on the conversion solution to obtain an alpha-ketoglutaric acid concentrated solution; reacting the obtained concentrated solution with calcium superchloride, and filtering to obtain alpha-ketoglutarate; adding the alpha-ketoglutarate and ethanol into a reaction kettle, slowly and dropwisely adding sulfuric acid, stopping adding the acid when the pH value of the ethanol solution is 1.3-1.5, stirring to react to generate a calcium sulfate precipitate, filtering, and collecting the filtrate which is a ketoglutaric acid ethanol solution; eluting the residual alpha-ketoglutaric acid from the calcium sulfate with ethanol, and collecting the eluting solution; and mixing the filtrate and eluting solution, and heating and concentrating under reduced pressure to precipitate the alpha-ketoglutaric acid crystal. The membrane filtration technique is adopted to avoid abundant water evaporation; and thus, the method has the advantages of energy saving, high production yield, favorable crystal form, light color of the crystal grain, and stable product quality, and can easily implement industrialized large-scale production.

In the continuous pressurized filtering one-stage separation process, the parathalic acid product is obtained through filtering in a pressurized filter, the first drying, washing, secondary drying to form filter cake, back blowing with inert gas to peel off filter cake, discharging via the valve, passing through the feeding screw and drying in the drying machine. The present invention has high product quality and simple separation process.

The invention relates to a method for deeply treating nonbiodegradable sewage which combines a membrane filtration technology and a catalytic ozonation technology. The method comprises the steps of coagulating, flocculating, membrane filtration and ozonation. Compared with the prior art, the method for deeply treating nonbiodegradable sewage is capable of improving the efficiency of removing pollutants, guaranteeing the effluent quality to reach the standard, fully saving medicament adding amount and reducing operation cost, has excellent economical efficiency, and is suitable for the situation of China and worthy of popularization.