339 results about "Microfiltration" patented technology

The invention discloses a purification device for aquaculture wastewater, and relates to the technical field of wastewater purification. Comprising a box body as well as a physical filter tank and a biochemical bacterium culture tank which are arranged in the box body, and further comprises a microfiltration assembly arranged in the physical filter tank, the microfiltration assembly comprises a filter cartridge rotationally connected to the interior of the physical filter tank, a backwashing pipe is fixedly connected to the interior of the physical filter tank, and a sewage collecting tank is arranged in the filter cartridge; a cleaning assembly matched with backwashing to improve the cleaning effect of the filter cartridge is arranged in the filter cartridge, the cleaning assembly comprises a floating plate arranged in the filter cartridge, a connecting rod slidably penetrates through the floating plate, and the upper end of the connecting rod penetrates through the dirt collecting tank and is fixedly connected with a first cleaning brush; stubborn attachments such as mycoderm and caustic soda attached to the inner wall of the filter cartridge can be brushed off by utilizing the first cleaning brush, and the cleaning effect on the filter cartridge can be improved by matching with backwashing, so that the attachments on the inner wall of the filter cartridge can be massively washed off, the backwashing period is shortened, and the blockage probability of the filter cartridge is reduced.

The invention discloses a siraitia grosvenorii low-temperature continuous countercurrent extraction process and a siraitia grosvenorii extract, and belongs to the technical field of siraitia grosvenorii extraction.The siraitia grosvenorii low-temperature continuous countercurrent extraction process comprises the following steps that S1, fresh siraitia grosvenorii fruits are extracted through a four-stage squeezing and continuous countercurrent extraction combined method, s2, carrying out solid-liquid separation on the first liquid phase through ceramic membrane microfiltration, and collecting a microfiltrate; and S3, carrying out post-treatment on the micro-filtrate to obtain the extract. The siraitia grosvenorii low-temperature continuous countercurrent extraction process is high in extraction efficiency and low in solvent consumption, and the prepared extract has both high sweetness and oxidation resistance.

The invention discloses a preparation method of a raspberry-derived exosome loaded with neroli essential oil. The preparation method comprises the following steps: preparing raspberry fruits into homogenate; centrifuging, collecting supernate, adjusting the pH value to 4.07.5, standing, and centrifuging again; taking supernate, adjusting the pH value to 7.2-7.4, adding polyethylene glycol, standing, centrifuging, collecting precipitate, and carrying out resuspension dispersion; performing microfiltration to obtain supernate, and combining electrophoresis dialysis and ultrafiltration concentration to obtain the high-purity raspberry exosome. And diluting the exosome, adding the diluted exosome into a dimethyl sulfoxide solution containing neroli essential oil, carrying out water bath stirring, carrying out ultrafiltration centrifugation, and taking a clear liquid to obtain the exosome loaded with the neroli essential oil. Efficient separation and purification of the raspberry exosome are achieved by applying an isoelectric precipitation technology, then the neroli essential oil is wrapped in the exosome, the stability of the essential oil is improved, the action time is prolonged, meanwhile, the neroli essential oil and active ingredients of the exosome generate a synergistic effect, and the antioxidant activity is jointly enhanced.

The invention relates to the technical field of biological medicine, in particular to a lactobacillus-sourced extracellular vesicle and application of the lactobacillus-sourced extracellular vesicle in prevention and treatment of necrotizing enterocolitis, the extracellular vesicle is prepared from lactobacillus, the lactobacillus is Lactobacillus rhamnosus GG, the strain is purchased in the American Center for Type Culture Collection, and the preservation number is ATCC 53103. The preparation method of the extracellular vesicles comprises the following steps: carrying out ultracentrifugation on a lactobacillus culture solution, removing thalli, then collecting supernate, carrying out primary microfiltration, taking micro-filtrate, carrying out differential centrifugation, resuspending precipitates by using PBS, then carrying out secondary microfiltration, collecting the micro-filtrate, carrying out density gradient centrifugation, and collecting a 30-45% interface vesicle layer. The invention discloses a synergistic effect mode between intestinal symbiotic flora and intestinal epithelial cell metabolic molecules for the first time, and the discovery is expected to construct a brand-new mechanism normal form for regulating the host intestinal barrier function by flora.

The invention provides a method for separating beta-casein from a dairy product, a method for separating kappa-casein and a casein mixture. The method for separating the beta-casein from the dairy product comprises the following steps: separating whey and casein in skimmed milk to obtain a casein concentrated solution; carrying out low-temperature microfiltration-percolation treatment on the casein concentrated solution at the temperature of 10 DEG C or below to obtain beta-casein permeate and a by-product of which at least part of beta-casein is removed; and heating the beta-casein permeate to realize self-association of the beta-casein permeate, and then carrying out ultrafiltration-percolation to obtain the beta-casein. The influence on the structure and performance of the beta-casein in the separation process is reduced, and the purity of the separated beta-casein product is improved.

The invention relates to the technical field of fermentation industrial wastewater treatment, and particularly discloses a white spirit production wastewater treatment process and system. The system comprises a pretreatment unit, an anaerobic treatment unit, a denitrification unit, a multi-stage biochemical treatment unit, an advanced treatment unit, a sludge treatment unit and a backwashing water recovery unit which are connected through a corrosion-resistant pipeline, a variable frequency pump body and a control valve group. The method comprises the following steps: homogenizing water quality and water quantity through an adjusting tank, adjusting the pH value through a neutralizing tank, pretreating through a microfilter and an air flotation device, sequentially feeding into a hydrolysis acidification tank and a two-stage UASB reactor to degrade organic matters, reducing nitrogen concentration through a denitrification unit, deeply degrading pollutants through a multi-stage biochemical system, and finally realizing up-to-standard discharge through magnetic coagulation phosphorus removal and decoloration treatment. The sludge is subjected to resource utilization after being concentrated and dehydrated, and backwashing water and filtrate are recycled and retreated. The system is high in treatment efficiency, low in operation cost, high in resource recovery rate, stable in effluent and suitable for wastewater treatment of various white spirit production enterprises.

Provided is a method for large-scale preparation of a purified preparation of a recombinant lentiviral vector at the GMP grade. The method comprises: (a) providing raw material feed liquid to be purified that comprises recombinant viral vectors; (b) carrying out a microfiltration treatment on the feed liquid to obtain a microfiltered filtrate comprising the recombinant viral vectors; (c) optionally concentrating the filtrate to obtain a concentrated filtrate; (d) purifying the filtrate obtained in the previous step by means of chromatography to obtain a crude pure product comprising the recombinant viral vectors; and (e) subjecting the crude pure product obtained in the previous step to liquid exchange and elaborate purification to obtain the purified recombinant viral vectors.

The invention discloses a nicotinic acid immobilized enzyme conversion method, which comprises the following steps: taking wet thalli containing nitrilase, preparing a flocculation clear liquid, passing the flocculation clear liquid through an ultrafiltration membrane, carrying out embedding immobilization to obtain embedded particles not greater than 2mM, and after the embedded particles are hardened, separating and purifying the obtained conversion liquid by adopting a membrane separation method to obtain the nicotinic acid immobilized enzyme. Sequentially carrying out microfiltration, activated carbon decoloration, ultrafiltration, nanofiltration decoloration, acidification crystallization and centrifugation to finally obtain a nicotinic acid finished product. The immobilized enzyme prepared by the method disclosed by the invention can stably exist in nitrile substances, can be repeatedly used for many times, and is high in stability and low in enzyme activity loss rate, and a separated and purified product is free of impurities and high in yield.

The application discloses a kind of intelligent switching water sample pretreatment system and method, system includes: combined sand filter sample barrel, for collecting water sample to be pretreated, initial water sample turbidity value acquisition is carried out, while water sample preliminary pre-filtering treatment is carried out;Positioning floating sampling device, for fixing to take supernatant after water sample settlement;Microfiltration module, for the microfiltration of ultrahigh turbidity water sample;Sample water transfer pump, for transmitting supernatant in combined sand filter sample barrel to microfiltration module;Sample collection barrel, for collecting and detecting water sample quantity after processing, for instrument or laboratory personnel to sample analysis;Valve assembly, by valve opening and closing, water sample is switched different pretreatment mode;Cleaning assembly, including rotary high-pressure spray head and self-heating ultrasonic cleaning device, for cleaning system after pretreatment internal residual adherend.

The invention discloses a production process of earthworm protein powder, and aims to solve the problems of poor product quality and activity loss caused by no standard raw materials, non-standard hydrolysis parameters, more separated and filtered impurities, improper drying control and no storage control in the existing process. The process comprises the following steps: selecting fresh red frozen eisenia fetida; adding 2-3 times of reverse osmosis purified water, homogenizing and crushing for more than or equal to 1 hour until the yogurt is formed, and self-melting at 37 DEG C for more than or equal to 10 hours; taking supernate and using a tubular separator (controlling the flow rate and cleaning a rotary drum every 30 minutes); 2-3 times of purified water is added into the centrifugate, a membrane is washed regularly through microfiltration, the temperature is controlled through ultrafiltration, and residues are washed away through the purified water after alkali washing; drying at the temperature less than or equal to 50 DEG C (pre-cooling at-22 DEG C, raising 5 DEG C every 3 hours, and recording the temperature regularly); and airing the powder, performing ultraviolet sterilization for more than or equal to 2 hours, screening by 80-120 meshes, packaging, and storing in a finished product warehouse with controlled temperature and humidity (5-25 DEG C, 40-60%) and sterilization for 1 hour every day. The process improves the protein extraction rate, purity and activity retention rate, ensures the product safety and stability, and is suitable for industrial production.

The utility model discloses a pressure tank type microfiltration system which comprises a waste residue collecting cover, a spraying cover, a pressure tank main body and a microfiltration cylinder, the microfiltration cylinder is arranged in the middle of the pressure tank main body, the spraying cover is arranged on the inner side wall of the pressure tank main body, and the waste residue collecting cover and a shunting blocking cover are arranged at the two ends of the pressure tank main body respectively. A plurality of supporting bases are arranged at the bottom of the pressure tank body. The spraying cover is arranged on the inner side wall of the pressure tank main body, the plurality of spraying heads are arranged at the bottom of the spraying cover, and sewage can be continuously sprayed onto the micro-filtration cylinder through the plurality of spraying heads, so that sewage mixing can be avoided, secondary pollution can be reduced, and the filtering effect can be improved; a flow guide hole pipe is arranged in the middle of the microfiltration cylinder, a scraping plate is arranged on the outer side of the flow guide hole pipe, filtered water can be conveniently guided out through the flow guide hole pipe, a waste residue collecting cover is arranged at the end of the spraying cover, and a waste residue collecting opening is formed in the inner side of the waste residue collecting cover.

The application discloses a process method for zero discharge of ethylene alkali residue wastewater, which comprises a wet oxidation section, a biochemical section and a salt treatment section; the wet oxidation section comprises a heat exchange unit, a wet oxidation reactor, a cooler and an adjusting tank; the biochemical section comprises an electrodialysis I, aerobic biochemical treatment, ozone catalytic oxidation, anaerobic biochemical treatment, secondary biochemical treatment, a recycled water pool and a methane purification unit; the salt treatment section comprises a tubular microfiltration, an electrodialysis II, a decarbonizer, a salt separation system, a biological reactor and a reverse osmosis; wherein the modified anion exchange membrane used in the electrodialysis has the characteristics of strong anti-pollution ability and high ion exchange rate, can effectively realize the separation of salt and organic matters in the wet oxidation effluent of the ethylene alkali residue, solves the problem of difficult treatment of the organic matters in the wet oxidation effluent of the ethylene alkali residue, and finally realizes zero discharge.

The invention belongs to the technical field of wastewater treatment, and discloses an efficient evaporative crystallization treatment process for zinc-containing wastewater, which comprises the following steps: 1) adding a hydrogen peroxide solution into the zinc-containing wastewater, and applying ultrasonic waves to carry out ultrasonic enhanced oxidation; 2) stopping ultrasonic treatment, introducing sulfate radicals into the zinc-containing wastewater, adjusting the pH value, precipitating, separating the precipitate, adding a chelating agent and an anti-scaling agent into the zinc-containing wastewater, stirring for reaction, separating the precipitate, and then performing microfiltration to obtain pretreated zinc-containing wastewater; 3) feeding the pretreated zinc-containing wastewater into a multi-stage flash evaporation system to obtain a zinc-containing concentrated solution; 4, the zinc-containing concentrated solution is fed into a crystallizer, microbubbles are introduced, meanwhile, ultrasonic waves are applied to enhance gas-liquid interface disturbance to promote crystallization, crystals are separated from crystallization liquid and then dried, and the zinc salt is obtained.The technology achieves the multiple purposes of low scaling rate, low energy consumption, high recovery rate and high zinc salt purity, and has excellent industrial implementability and popularization value.

The invention discloses a system and a method for extracting and filtering sweet-scented osmanthus liquid for sweet-scented osmanthus tea, and relates to the technical field of biological extraction. Comprising a stock solution tank, a filtering device and a storage tank which are sequentially communicated, and the filtering device is connected with an external nitrogen supply device and internally provided with a pre-separation unit, a microfiltration unit and an oil-water separation unit. In the pre-separation unit, a spiral feeding cavity is connected with a rotational flow cavity through a tangential channel, a screw rod and the rotational flow cavity form an annular rotational flow chamber, and an ultrasonic generator, a slag collecting chamber and a spiral slag discharging device are arranged; the microfiltration unit comprises a microfiltration cavity, and the stock solution in the rotational flow cavity is led to the bottom of the microfiltration cavity through a liquid distribution pipe and is filtered to a liquid collection chamber through a ceramic membrane pipe; a liquid inlet pipe of the oil-water separation unit is connected with a liquid collection chamber, and an upper component liquid outlet and a lower clear liquid outlet of an oil-water separation cavity are respectively connected with a storage tank to realize extraction and filtration of sweet-scented osmanthus component liquid. According to the invention, high-efficiency solid-liquid pre-separation, microfiltration and oil-water separation integrated purification of the sweet-scented osmanthus liquid and sesame oil recovery can be realized under nitrogen-sealed positive pressure conditions, membrane pollution is reduced, and aroma activity is maintained.

The invention belongs to the technical field of electrolyte materials, and discloses a high-purity lithium bis (fluorosulfonyl) imide solution as well as a preparation method and application thereof. The preparation method of the high-purity lithium bis (fluorosulfonyl) imide solution comprises the following steps: 1) mixing inert chloralkane and lithium carbonate to form a suspension, dropwise adding bis (fluorosulfonyl) imide into the suspension at reaction temperature and pressure for reaction, after the reaction is finished, performing filter pressing, washing, and performing filter pressing again to obtain a filter cake; and 2) crushing the filter cake, feeding the crushed filter cake into a closed-loop circulating fluidized bed, sequentially drying in a low-temperature area and a medium-temperature area, instantaneously contacting and dissolving the obtained hot powder with an atomized and sprayed carbonate solvent to form a solution, and performing microfiltration to obtain the high-purity lithium bis (fluorosulfonyl) imide solution. The lithium bis (fluorosulfonyl) imide solution has ultra-high purity and ultra-low moisture, the content of other impurities such as chloride ions, free acids and metal ions is extremely low, additional steps of dehydration, purification or acidity adjustment and the like are not needed, and the lithium bis (fluorosulfonyl) imide solution can be directly used for preparing a high-performance lithium ion battery electrolyte.

The invention belongs to the technical field of plant active ingredient extraction, and relates to a segmented enzymolysis-cascade membrane separation extraction method of cyclocarya paliurus combined-state selenium polysaccharide and the combined-state selenium polysaccharide prepared by the method. The method comprises the following steps: firstly, constructing a first extraction system for a cyclocarya paliurus leaf raw material, carrying out first-stage enzymolysis, inactivation and solid-liquid separation, separating a first liquid phase through a nanofiltration membrane to form a low-molecular selenium-containing component flow, and excluding the low-molecular selenium-containing component flow in a subsequent alcohol precipitation and recovery step; and constructing a second extraction system from the first solid phase, carrying out second-stage enzymolysis, inactivation and solid-liquid separation, sequentially carrying out microfiltration, first ultrafiltration, second ultrafiltration and nanofiltration washing on the second liquid phase, and carrying out ethanol precipitation to obtain the combined-state selenium polysaccharide. The proportion of target molecular weight interval components in the obtained product is increased, the mass fraction of polysaccharide is increased, and the proportion of inorganic selenium, the mass fraction of protein and the ash content are reduced.

Glycerophosphoinositol (GPI) is used in preventing and treating COVID-19 infections. An environmentally sustainable method is for obtaining glycerophosphoinositol. In particular, a process for preparing glycerophosphoinositol from crude or partially purified phospholipid mixtures, includes in sequence: a) hydrolysis of a crude or partially purified phospholipid mixture by treatment with PLA1 and PLA2 enzymes; b) microfiltration of the mixture from step a) and subsequent ultrafiltration and nanofiltration of the microfiltrate to give a concentrated aqueous fraction of reaction products; c) electrodialysis of the aqueous fraction of step b) for separating ionic compounds from neutral compounds; d) ion exchange chromatography. Moreover, glycerophosphoinositol is used in preventing and treating a COVID-19 syndrome.

The invention discloses an efficient purification process of a bispecific antibody and a special chromatography system thereof. The efficient purification process of the bispecific antibody comprises the following steps: pretreatment: performing 0.22 mu m microfiltration on a cell culture supernatant to remove cell debris, and performing deep filtration to reduce turbidity to be less than or equal to 1NTU so as to reduce subsequent chromatography medium pollution; carrying out improved Protein A affinity chromatography, namely carrying out affinity chromatography by adopting an agarose medium modified by a recombinant Protein A ligand, taking 20mM Tris-HCl as a loading buffer solution, and taking the pH value of the loading buffer solution as 7.4, taking 100mM citric acid as an elution buffer solution, and taking the pH value of the elution buffer solution as 3.2-3.5; performing mixed mode chromatography: adopting a composite mode medium containing a benzamidine functional group, taking 50mM sodium phosphate as a buffer solution, adjusting the pH value to 6.0-6.5, adjusting the NaCl concentration to 0.1-0.3 M, and specifically removing a double-antibody polymer and a mismatched isomer by utilizing a hydrophobic effect and an ion exchange synergistic effect; and performing nanoscale filtration and terminal treatment: removing viruses by adopting a virus filtration membrane with the aperture of 30nm, and performing 0.22 mu m sterile filtration to obtain a final product. According to the process, the purification efficiency, the yield and the product purity are remarkably improved, and the process is suitable for efficient purification of the bispecific antibody.

This invention relates to the field of skincare technology, and in particular to a method for extracting active components from silkworm pupae and a moisturizing facial mask composition. The extraction method includes: freezing, grinding, and sieving silkworm pupae to obtain silkworm pupae powder; defatting the silkworm pupae powder in an ethanol solution and filtering to obtain defatted silkworm pupae powder; mixing the defatted silkworm pupae powder, water, and neutral protease, adjusting the pH to 6.2-7.0, and sequentially performing enzymatic hydrolysis, enzyme inactivation, centrifugation, and filtration to obtain an enzymatic hydrolysate; centrifuging, microfiltration, and fine filtration of the enzymatic hydrolysate to obtain the active components of silkworm pupae. This invention, through the synergistic effect of freezing and enzymatic hydrolysis, releases small molecule peptides, amino acids, and nucleoside active substances from silkworm pupae under mild conditions, reducing the risk of protein denaturation and inactivation; through a step-by-step physical impurity removal chain of centrifugation, microfiltration, and fine filtration, large molecule sensitizing proteins are removed without introducing organic solvents, making it more suitable for skincare products.

The utility model discloses a filter element structure of a microfiltration device, which comprises a box body, and an extension part is arranged at the top of the box body; the box cover is detachably connected with the extending part, a water pump is installed on the top of the box cover, a water inlet pipe and a water outlet pipe are connected to the water pump, and the water outlet pipe extends into the box body; the filter element body is detachably arranged at the bottom of the water outlet pipe; the fastening assembly comprises a first fastening ring arranged on the outer wall of the water outlet pipe, an insertion rod arranged at the bottom of the first fastening ring, a limiting groove formed in the side surface of the insertion rod, a second fastening ring arranged on the outer wall of the filter element body, an insertion opening formed in the second fastening ring and used for allowing the insertion rod to penetrate through, and a vertical rod mounted at the bottom of the second fastening ring; the through hole is formed in the vertical rod; the micro-filtration device has the beneficial effects that through the designed fastening assembly, the filter element body and the water outlet pipe can be quickly disassembled and assembled, the smooth filtration is ensured, and the comprehensive performance and the practical application value of the micro-filtration device are improved.

This invention discloses a method for producing high-quality sodium caseinate, belonging to the field of food engineering technology. The method includes enzymatic modification, low-temperature alkali conversion, ceramic membrane microfiltration, ultrafiltration desalting and concentration, homogenized spray drying, and fluidized bed agglomeration granulation. Enzymatic modification uses a complex enzyme of endopeptide and phosphatase to hydrolyze bitter peptides and phytic acid at 45–55℃; low-temperature alkali conversion involves gradient alkali addition at 15–25℃ to avoid thermal damage and Maillard reactions; ultrafiltration employs equal-volume dialysis, with water added until the conductivity is ≤500 μS / cm, desalting and removing small-molecule bitterness; finally, agglomeration granulation is achieved by fluidized bed spraying with 0.1%–0.5% lecithin. This invention completely abandons the acid precipitation-alkali dissolution process, coupling enzymatic modification with all-physical membrane separation and purification to produce sodium caseinate that is white in color, pure in flavor, dissolves rapidly in cold water in ≤30 seconds, has an ash content ≤3.5%, reduces wastewater discharge by more than 90%, is environmentally friendly, and suitable for large-scale production.

This invention discloses a method for preparing a heat-clearing and detoxifying oral liquid. Honeysuckle and Scutellaria baicalensis are pulverized and sieved, then enzymatically hydrolyzed with water, ultrasonically extracted, and filtered to obtain extract A. Scrophularia ningpoensis, Rehmannia glutinosa, Forsythia suspensa, Gardenia jasminoides, Viola yedoensis, Gentiana scabra, Isatis indigotica, Anemarrhena asphodeloides, and Ophiopogon japonicus are warm-soaked in water and flash-extracted, then filtered to obtain extract B. Gypsum is crushed, decocted with water, and filtered to obtain extract C. The extracts are combined, concentrated, and sequentially clarified using a flocculant, followed by inorganic ceramic membrane microfiltration and organic ultrafiltration. The clarified liquid is then concentrated, flavoring agents and preservatives are added, the pH is adjusted, the volume is adjusted, filtered, filled, and sterilized to obtain the finished product. This invention utilizes a composite clarification process—low-temperature ultrasonic-enzymatic extraction of honeysuckle and Scutellaria baicalensis, clarification using a flocculant, inorganic ceramic membrane microfiltration, and organic ultrafiltration—to improve the extraction rate of effective components, effectively remove large molecular impurities such as tannins, proteins, and pectin, and significantly improve the clarity and stability of the product.

The invention relates to the technical field of sintered pipe production, in particular to a production device and process for a microfiltration PE sintered pipe of an asymmetric structure, and the production device comprises a mold which is used for filling ultra-high molecular weight polyethylene powder with different particle sizes and putting the ultra-high molecular weight polyethylene powder into a sintering furnace for sintering molding to obtain the PE sintered pipe; the vibration assembly is connected with one end or two ends of the axis of the mold, and the vibration assembly is used for layering the ultra-high molecular weight polyethylene powder in the mold according to the particle size through high-frequency vibration; wherein the large-particle ultra-high molecular weight polyethylene powder moves in the axis direction to form an inner layer, the small-particle ultra-high molecular weight polyethylene powder moves away from the axis to form an outer layer, and after vibration is completed, the PE sintered pipe is obtained through sintering forming in a sintering furnace. According to the invention, the design limitation of uniform pore diameter of a traditional sintering tube is broken through, continuous distribution of gradient pore diameter is realized through vibration layering and precise sintering control, and the contradiction that a traditional product is low in flux if being high in filtering precision and insufficient in precision if being high in flux is structurally solved; an additional binder is not needed, only the PE particles are melted and bonded, the situation that the filter effect is affected by binder residues is avoided, and meanwhile the material compatibility and the structural stability are improved.

The invention discloses a titanium white waste acid treatment process, and relates to the technical field of industrial waste regeneration. The titanium white waste acid is subjected to microfiltration and membrane electrolysis treatment, sulfuric acid is separated and recycled under the control of constant pressure and constant current, and residual liquid is subjected to electrodialysis treatment to oxidize ferrous ions into ferric hydroxide precipitates and calcined into ferric oxide; carrying out reduction leaching on the titanium-containing material, hydrolyzing to generate metatitanic acid, and calcining to obtain titanium dioxide; oxidizing the hydrolysate to precipitate vanadate, and calcining to obtain vanadium pentoxide; adjusting the pH value of the filtrate, selectively adsorbing scandium through a biological adsorption column, precipitating and calcining the eluent to obtain scandium oxide, and regenerating and recycling the adsorbent through acid pickling. According to the process, through multi-stage treatment and biological adsorption, resource recycling of sulfuric acid, iron, titanium, vanadium and scandium components in the waste acid is achieved, the process is clean and efficient, secondary pollution of a traditional process is avoided, and a green low-carbon solution is provided for waste acid treatment in the titanium dioxide industry.

This invention relates to the field of wastewater treatment technology, and in particular to a microfiltration wastewater treatment device for industrial wastewater turbidity removal. The device includes a treatment cylinder and an L-shaped wastewater pipe installed at the top of the treatment cylinder. A swinging filter assembly is installed at the top inner part of the treatment cylinder. The swinging filter assembly shakes and filters the wastewater. The swinging filter cartridge within the swinging filter assembly swings and moves the filtered impurities. During the swinging process, the swinging filter assembly throws out the wastewater while simultaneously causing the filtered impurities to flow. This invention achieves dynamic separation through swinging filtration, combined with real-time self-cleaning via rotating scraping. The filter cartridge is automatically cleaned by a torsional brush assembly. A fixed filter cartridge with a blocking filter assembly effectively blocks filtration and also possesses a self-cleaning function. This allows for the simultaneous and continuous execution of filtration and cleaning processes, significantly improving wastewater turbidity removal efficiency and the stability and durability of the equipment operation.

The present invention relates to a zero-discharge treatment system and method for regenerated wastewater from a soft water station. The system includes a regulating tank, a vortex-type hydraulic cavitation accelerated coagulation nucleation unit, an electroflocculation-microfiltration unit, and an electrodialysis-electrolysis unit. The vortex-type hydraulic cavitation accelerated coagulation nucleation unit is composed of a vortex-type hydraulic cavitation device and a scale separation device, and the scale separation device includes a magnesium scale and separation device and a calcium scale and separation device. The electroflocculation-microfiltration unit is composed of an electroflocculation tank and a microfiltration tank, and the electrodialysis-electrolysis unit is an electrodialysis-electrolysis tank. The regenerated wastewater first passes through the vortex-type hydraulic cavitation accelerated coagulation nucleation unit to degrade organic matter and remove hardness. The residual flocculants, colloids, and hardness are then deeply treated by the electroflocculation-microfiltration unit. Finally, the wastewater is concentrated by the electrodialysis-electrolysis unit. While achieving zero discharge in the process, it can also generate certain economic value. The system occupies a small area and has low investment and operation and maintenance costs.

The utility model relates to cleaning equipment technical field discloses a kind of microporous filter plate cleaning devices, including the cylinder being arranged in ultrasonic cleaner, cover plate being installed in the top of cylinder and bottom plate being installed in the bottom of cylinder, bottom plate is equipped with cleaning liquid inlet, cover plate is equipped with cleaning liquid outlet, bottom plate upside is equipped with several groups of sealing washer and filter plate, sealing washer and filter plate are sequentially overlapped arrangement;Locking piece is arranged in triangle distribution on cover plate, and the lower end of locking piece is pressed on the upside of top layer filter plate.The utility model installs completion by TC chuck joint between cylinder and bottom plate, then sequentially overlapped installation in cylinder by sealing washer and filter plate, finally put cover plate and install completion by TC chuck joint, compact locking piece, the device of the application is convenient to install and dismount, cleaning liquid can only flow from lower layer filter plate to upper layer filter plate when ultrasonic cleaning, and constantly replace using flow cleaning liquid when ultrasonic cleaning, guarantee the cleaning effect of filter plate.

The present application relates to the technical field of natural product extraction, and provides mulberry root bark extract and a preparation method thereof.The extract contains 3-8 characteristic components among eight characteristic components of mulberry flavone C, morusin, cyclo-morusin, cyclo-moracen, mulberroside G, morusin M, mulberroside C and mulberry flavone H.Further, the content relationship of four key components, the proportion of 300-800 Da components, the proportion of >1000 Da components, the content of fat-soluble resin impurities and the proportion of chromatographic peak area are coupled and limited by stability index S and synergy index T.The preparation method comprises the following steps: acid buffer infiltration, ethanol ultrasonic reflux extraction, concentration and adjustment of polarity, sedimentation separation, supercritical carbon dioxide impurity removal, resin column narrow window chromatographic separation, microfiltration-ultrafiltration-nanofiltration separation and drying.The obtained extract can regulate the expression of inflammation-related factors and promote the recovery of intracellular signal molecule level, thereby showing good soothing and skin barrier repair effects at the cell level.

The invention relates to the technical field of bioengineering and food health care, in particular to anti-aging abalone peptide and a preparation method thereof. The method comprises the following steps: sequentially freezing, freeze-drying and crushing the abalone byproduct to obtain a raw material; mixing the raw materials with water, and boiling to obtain a boiled liquid; cooling the boiled liquid, adjusting the pH value, adding compound protease and an auxiliary agent, carrying out enzymolysis, and carrying out enzyme deactivation after the enzymolysis is finished, so as to obtain an enzymatic hydrolysate; sequentially carrying out rough filtration and microfiltration on the enzymatic hydrolysate to obtain filtrate; separating and purifying the filtrate through a gel filtration chromatography column to obtain a refined abalone peptide solution; and carrying out vacuum concentration and spray drying on the refined abalone peptide liquid to obtain the anti-aging abalone peptide. According to the method, the abalone byproducts are used as raw materials, and the abalone peptide with a definite molecular weight range and excellent free radical scavenging capacity is successfully prepared through systematic processes of boiling, enzymolysis, filtration, separation and purification, concentration and spray drying, so that high-valued utilization of the abalone byproducts is realized.

The invention belongs to the technical field of membrane separation, and particularly relates to a quercetin-doped reverse osmosis composite membrane, a preparation method thereof and a water purification method. The quercetin-doped reverse osmosis composite membrane comprises a polysulfone microfiltration base membrane and a quercetin-doped polyamide selection layer, the quercetin-doped polyamide selection layer is attached to the surface of at least one side of the polysulfone microfiltration base membrane; the quercetin-doped polyamide selection layer comprises quercetin and a polyamide skeleton, and the quercetin and the polyamide skeleton are connected through an ester bond and / or a hydrogen bond. The quercetin-doped reverse osmosis composite membrane at least meets one of the following conditions: the surface roughness is 121 nm to 199 nm; the water contact angle is 50-60 degrees; under the conditions of 20 bar and 25 DEG C + / -1 DEG C, the retention rate on a 2000 mg.L <-1 > NaCl solution is greater than or equal to 95%; the Zeta potential is-30mV to-60mV when the pH value is equal to 7; the sustained release rate of quercetin is 0.1 [mu] g.cm <-2 >. D <-1 >-10 [mu] g.cm <-2 >. D <-1 >; the killing rate of escherichia coli is greater than or equal to 90%; and the killing rate of staphylococcus aureus is greater than or equal to 90%.