447 results about "Ultrafiltration" patented technology

The utility model relates to water purification technical field discloses a big flow ultrafiltration membrane water purifier with self -cleaning and backwash function, including prefilter and two or more than two parallel connection's ultrafiltration membrane water purifier, water purifier purifying water export is equipped with the three ways, and the three ways are connected with the loose joint and become two water purifier's purifying water cavity intercommunication, and the water inlet and sewage water mouth of water purifier are equipped with control valve and three ways, and the three ways are connected with the loose joint and become water inlet channel and sewage water channel respectively, through closing or opening corresponding water inlet control valve and sewage water control valve, the purifying water of water purifier automatic backwash is carried out to the filter core of another water purifier, and backwash is crossed and is carried out between two or more than two water purifiers, and sewage water pipeline communication is often used water's wash vegetables pool, mop pool, such as toilet equipment, and the function of backwash and sewage water at any time is superimposed, makes filter core more clean, if maintaining properly, the service life of water purifier filter core reaches at least ten years or more.

The application discloses a Dendrobium nobile Lindl polysaccharide component group, a preparation method thereof and application of the Dendrobium nobile Lindl polysaccharide component group in immunoregulation. Four polysaccharide components with definite structures, namely DNP-0-1 (>100 kDa), DNP-0-2 (30-100 kDa), DNP-0-3 (<30 kDa) and DNP-1-1 (<50 kDa), are synchronously separated from Dendrobium nobile Lindl by combining ultrasonic extraction process optimized by a response surface method with DEAE-cellulose column chromatography and ultrafiltration membrane series grading technology. After structure characterization and in-vitro immunological activity evaluation, the four components all have immunoregulatory activity, and the activity of DNP-0-1 is optimal. Pearson correlation analysis shows that the content of galactose and the molecular weight are extremely significantly positively correlated with the immunological activity, and the content of glucose and mannose is significantly negatively correlated with the activity. The application establishes an integrated research system of 'preparation by grading-structure characterization-activity screening-structure-activity analysis', and provides a material basis and evaluation basis for the development of immunoregulatory drugs or functional foods.

This application relates to the field of pharmaceutical technology, specifically to a water-for-injection generating device and a purified water distribution system. The main pipeline has an inlet end connected to the water supply pipeline of the purified water distribution system, and an outlet end connected to the return pipeline of the purified water distribution system. The branch pipeline assembly includes branch pipelines, and terminal ultrafiltration membrane modules and water-for-injection production valves, both installed on the branch pipelines. The terminal ultrafiltration membrane modules are located upstream of the water-for-injection production valve. The inlet and outlet ends of the branch pipelines are both connected to the main pipeline. The inlet end of the branch pipeline is located upstream of a first flow regulating valve, and the outlet end of the branch pipeline is located downstream of the first flow regulating valve. The purpose of this application is to address at least one technical problem mentioned in the background art by providing a water-for-injection generating device and a purified water distribution system.

The utility model discloses a kind of silica-containing wastewater recycling system, including the first sedimentation tank, primary CTUF silicon removal pool, primary RO water treatment system, secondary RO water treatment system, second sedimentation tank, secondary CTUF silicon removal pool, tertiary RO water treatment system, MVR system connected in sequence;Primary RO water treatment system is equipped with brackish water film, secondary RO water treatment system is equipped with seawater desalination film, and STRO film is equipped in tertiary RO water treatment system;Primary CTUF silicon removal pool, secondary CTUF silicon removal pool are equipped with roll type ultrafiltration membrane in both;The MVR system is used to evaporate concentration to the concentrated water discharged by tertiary RO water treatment system, and primary RO water treatment system, secondary RO water treatment system, tertiary RO water treatment system, MVR system are also connected with recycling water tank.The utility model is treated to wastewater by multistage precipitation, CTUF silicon removal pool, RO system, effectively removes higher concentration of silicon in wastewater, realizes wastewater recycling.

This invention discloses a method and application for extracting soluble collagen from bones unearthed from archaeological sites, belonging to the field of archaeological sample processing technology. Specifically: 1) After pretreatment, the blocky ancient bone sample is dried at low temperature and ground into bone powder; the bone powder is added to an acidic solution for ultrasonic treatment, centrifuged, and the supernatant is filtered to obtain the sample to be loaded onto a column; 2) The sample to be loaded onto the column is subjected to chromatographic separation, using a gradient elution with equilibration buffer and elution buffer, and a UV detector is used to monitor protein peaks, collecting the target protein solution that elutes within 20-30 minutes; 3) Finally, the target protein solution is concentrated and purified using an ultrafiltration tube to obtain soluble collagen. This invention can obtain a sufficient amount of collagen from ancient deteriorated bone samples, significantly improving sample utilization and providing reliable technical support for bioarchaeological research.

The application provides a photoresist waste liquid recycling device and process, by adding hydrochloric acid to the photoresist waste liquid in the acidification precipitation tank in the pretreatment module to adjust the pH value, the linear phenolic resin precipitation rate reaches more than 95%, and the linear phenolic resin can be used again to the production stage of the photoresist after centrifugal separation, a compound coagulant containing sulfide and polyaluminum chloride is added to the heavy metal capture tank in the pretreatment module, and the removal rate of heavy metal ions reaches 99.5%; then the photoresist fragments are separated by using an ultrafiltration device, and the diatomite modified by NaOH and polyetherimide is used for adsorption and decolorization, then two-stage vacuum distillation process is used to realize the recovery of high-purity solvents in the photoresist waste liquid, finally, the remaining residue is polymerized and cured by ultraviolet radiation, and the solid fuel with high heat value can also be prepared, so that the 'zero emission' and resource full recovery of the photoresist waste liquid are realized, and the treatment cost and environmental risk are significantly reduced.

The utility model provides a kind of water purification device, it includes: reverse osmosis water waterway, it includes front filter element, reverse osmosis filter element and reverse osmosis water waterway component;Ultrafiltration water waterway, it includes ultrafiltration filter element and ultrafiltration water waterway component;Wherein, the water purification device further includes post filter element, the water outlet of the reverse osmosis water waterway with the water outlet of the ultrafiltration water waterway communication back with the post filter element communication;Wherein, the water purification device includes at least including three kinds of mode: first mode, the ultrafiltration water waterway does not water, the reverse osmosis direct drinking water way water;Second mode, the reverse osmosis water waterway does not water, the ultrafiltration water waterway water;Third mode, the reverse osmosis direct drinking water way and the ultrafiltration direct drinking water way water respectively.By the present application can provide a variety of different purification degree direct drinking water, while saving cost meets the various water demand of customer.

This utility model provides a wastewater treatment ultrafiltration device, including a frame, in which multiple ultrafiltration membranes are installed. The multiple ultrafiltration membranes are connected through channels formed by pipes and valves. A detachable base box is installed at the bottom of the frame. The upper end of the base box is open. The pipes and valves connecting the ultrafiltration membranes are located directly above the base box. A drawer opening is opened at the upper part of one side of the base box. A drawer box extending into the base box is inserted into the drawer opening. Multiple through holes are evenly opened at the bottom of the drawer box. Paper sheets are lined inside the drawer box. The area of ​​the paper sheets is equal to the area of ​​the bottom of the drawer box. This utility model has the following beneficial effects: it facilitates the inspection of minor leaks at pipe interfaces, valve interfaces, and ultrafiltration membrane interfaces.

This utility model relates to the field of ultrafiltration membrane equipment technology, and discloses an ultrafiltration membrane device for milk production, including a frame with crossbars fixedly connected to both the upper and lower ends of the frame. This ultrafiltration membrane device for milk production, through a shock-absorbing mechanism, involves first installing a shock-absorbing filter frame through the filter tube onto the inside of the crossbars when the device is to be used. A rubber shock-absorbing ring is installed in the middle of the shock-absorbing frame, which is initially fixed to the outside of the filter tube. Then, a shock-absorbing spring is installed outside the rubber shock-absorbing ring. To ensure shock absorption while protecting the filter tube, foam cotton is filled outside the shock-absorbing spring and inside the shock-absorbing frame for shock absorption protection. This effectively reduces vibration and shaking outside the filter tube, preventing the connection between the filter tube and other parts of the equipment from gradually loosening due to vibration, which could lead to milk leakage, waste of raw materials, contamination, interference with the normal operation of the ultrafiltration process, and reduced production efficiency.

The application provides a mung bean protein salty taste enhancing peptide, a screening and preparation method and application. The method comprises the following steps: step 1, carrying out step-by-step enzymolysis on mung bean protein by using alkaline protease and flavor protease, carrying out ultrafiltration grading, and screening an initial extract of the salty taste enhancing peptide by using an electronic tongue; step 2, further identifying polypeptide sequences by using LC-MS / MS; and step 3, screening polypeptides with strong interaction capability with salty taste receptors TMC4 and ENaC by combining biological activity prediction, target active fragment screening, safety and physicochemical property evaluation and molecular docking analysis. The salty taste enhancing peptide of the mung bean protein obtained by screening comprises polypeptides represented by RPFF, APDLRGY, WDDIGGL, FDGF and AEFF, and contains RP, RG, DD, DGF and FF characteristic peptide segments, respectively. The polypeptides are synthesized by using a solid phase, and the salty taste enhancing effect of the polypeptides is verified by using an electronic tongue. When 0.03% of the above synthesized polypeptides are added to a 0.4% NaCl solution, the salty taste enhancing rates are 90%, 62%, 34%, 52% and 42%, respectively. The polypeptides can significantly enhance salty taste perception of a solution under low-salt conditions, and achieve the effect of salt reduction without taste reduction.

The application provides a kind of hierarchical extraction and analysis method of unrecoverable pollution in contaminated micro / ultrafiltration membrane, belongs to the field of membrane pollution analysis. Including the following steps: (1) pre-cleaning of contaminated micro / ultrafiltration membrane;(2) after the contaminated membrane is dried after pre-cleaning, immerse in the first solvent extraction liquid, make the membrane and the extraction liquid fully contact, after treatment, solid-liquid separation obtains first extraction liquid;(3) the second solvent extraction liquid is added to the membrane sample treated in step (2), the membrane sample is completely dissolved, and the second extraction liquid is obtained;(4) purification and analysis of extraction liquid: add the first extraction liquid or the second extraction liquid drop by drop to 5-10 times volume of pure water, centrifugal filtration solid after phase inversion to obtain purified extraction liquid, and analyze the physicochemical properties of the extraction liquid. The application extracts the unrecoverable pollution in the membrane under different temperature conditions and solvent concentration gradients by introducing polar organic solvent.

The utility model discloses a kind of capsaicin derivative ultrafiltration membrane module, it is related to separation membrane preparation technical field.The utility model includes external shell, the top and bottom of external shell are provided with connector, the side of two groups of connector is respectively penetrated and fixedly connected with water inlet pipe and water outlet pipe, the end of the two groups of connector is close to and is fixedly connected with sealing washer, the inside of external shell is provided with inner layer filter membrane, middle filter membrane and outer layer filter membrane, the utility model is by membrane silk using enhanced inner support, and capsaicin derivative copolymer modification is carried out to membrane silk, constructs stable antibacterial function layer on hollow fiber membrane, and gives membrane high anti-pollution, simultaneously further improves the mechanical property of membrane, increases roughness in membrane shell and membrane silk contact surface, increases membrane shell depth, uses modified epoxy resin to package, so that membrane silk and membrane shell package has no leakage point, not easy to fall off, water turbidity is stable and relatively low.

This invention relates to the field of polymer materials technology and provides a high-performance PVDF ultrafiltration membrane and its preparation method, comprising the following steps: dissolving PVDF in a solvent, adding ethyl 2-bromoisobutyrate, CuBr / tris-(2-dimethylaminoethyl)amine and N-isopropylacrylamide for reaction; subsequently adding polyethylene glycol methacrylate, heating and reacting, followed by precipitation and drying to obtain a triblock copolymer; mixing the triblock copolymer with PVDF, adding it to a mixed solvent containing ionic liquid, dissolving and degassing to obtain a casting solution; casting the casting solution onto a substrate, coating it using a temperature-controlled doctor blade, then immersing the substrate in a coagulation bath, and after coagulation, washing and drying to obtain the PVDF ultrafiltration membrane. The ultrafiltration membrane has high flux and good retention rate, and also exhibits good temperature-sensitive response performance.

This invention discloses a water purification device, including a filtration unit and a reverse osmosis filter. The filtration unit includes a housing and an ultrafiltration membrane filter element and an adsorption filter element installed inside the housing. The housing is provided with a raw water inlet, an adsorption outlet, and an ultrafiltration outlet. Water filtered by the ultrafiltration membrane filter element is configured to flow out through the ultrafiltration outlet and also configured to flow out through the adsorption outlet after being filtered by the adsorption filter element. The reverse osmosis filter includes a raw water inlet, a pure water inlet, and a wastewater inlet. The adsorption outlet is connected to a water tap via a domestic water pipe. The ultrafiltration outlet is directly or indirectly connected to the raw water inlet. The pure water inlet is directly or indirectly connected to a drinking water pipe, which is connected to the water tap. An eighth control valve is provided on the domestic water pipe, configured to regulate the water flow and on / off state in the domestic water pipe. This invention can avoid clogging of the ultrafiltration membrane filter element, realize the mixing of domestic water and pure water, and adjust the TDS of the mixed water.

The present invention refers to a method for manufacturing a phosphorylated lignin which is soluble in water at a pH range of 2 to 14. Said method comprises the efficient phosphorylation of lignin preventing the formation of undesired species, which leads to an outstanding water solubility at neutral and acidic conditions, and, preferably, the separation of the water-soluble phosphorylated lignin from the reaction medium, wherein said separation comprises acid precipitation and / or ultrafiltration and drying under specific conditions. The invention also refers to a phosphorylated lignin that is water- soluble at a pH of 2 to 14, preferably obtained by the method of the invention.

The application discloses a preparation method and application of a polyacid tannic acid modified ultrafiltration membrane, and the preparation method comprises the following steps: preparing a casting solution containing a high molecular film forming material and a solvent; adding a polyoxometalate into the casting solution, uniformly mixing, and obtaining a polyacid modified casting solution; scraping and coating the polyacid modified casting solution to form a liquid membrane, pre-evaporating, immersing into a coagulation bath containing tannic acid to perform phase inversion and film forming, and obtaining the polyacid tannic acid modified ultrafiltration membrane. Through the synergistic effect of the polyacid blending regulation of the membrane pore structure and the in-situ coordination modification of the tannic acid phase separation, the simultaneous improvement of the permeation flux and the retention rate is realized, the pure water flux of the obtained ultrafiltration membrane reaches 221.37 LMH, the bovine serum albumin retention rate reaches 96.17%, and the preparation process is simple, efficient, and has a good large-scale application prospect.

This invention relates to the field of biomedical technology, specifically to a heart-spleen synergistic regulatory composition based on Chinese yam complex peptides, its preparation method, and its application in improving heart-spleen dysfunction. The method involves first gelatinizing Chinese yam, then sequentially performing primary endopeptidation with papain and secondary fine exopeptidation with flavor protease, followed by separation via a 1000 Da ultrafiltration membrane to directionally prepare a Chinese yam complex peptide with a peptide fraction of at least 90% having a molecular weight less than 1000 Da. This complex peptide is then combined with extracts of ginseng, lotus seed, longan pulp, and tangerine peel in a specific ratio. The yam peptides obtained by this invention can self-assemble with macromolecular hydrophobic components such as ginsenosides in the system to form microscopic peptide-saponin complexes, acting as biological delivery carriers and significantly improving the transmembrane absorption rate of macromolecular active ingredients in individuals with weak spleen and stomach. Simultaneously, the two-step enzymatic hydrolysis process achieves the simultaneous retention of highly active small molecules and precise debittering.

The application discloses a desalination method for 1,3-propanediol fermentation liquor, and comprises the following steps: sequentially performing bacteria removal and concentration on the 1,3-propanediol fermentation liquor to obtain a primary concentrated solution; and performing specific chromatographic separation and desalination on the primary concentrated solution by using a chromatographic separation system to obtain a desalination solution; by the specific chromatographic separation and desalination process, the PDO fermentation liquor can be directly subjected to chromatographic separation and desalination after being filtered by ultrafiltration, the nanofiltration membrane filtration process is reduced, and the PDO extraction process is simplified; in addition, the product yield of PDO in the desalination process of the PDO fermentation liquor can reach more than 98%, the chromatographic separation and desalination rate is increased to more than 90%, the residual amount of the distillation kettle is significantly reduced, the product yield of PDO in the distillation process is increased, and the product quality is significantly improved.

The present invention provides a method for reducing the amount of iodine in a marine plant preparation; the method comprising: a) providing an aqueous composition comprising the marine plant preparation; and b) processing the aqueous composition by ultrafiltration across a membrane with a pore size of about 50 kDa or less to provide a processed marine plant preparation with a reduced amount of iodine compared to the amount of iodine in the marine plant preparation in the aqueous composition.

The application provides a utilization method of desalted water of a galvanizing line and a galvanized sheet production equipment. The utilization method comprises the following steps: introducing the desalted water into a finishing machine, collecting generated finishing waste water, introducing the finishing waste water into a first sedimentation and ultrafiltration mechanism for treatment, and obtaining first treated desalted water; introducing the first treated desalted water into a tension leveler, collecting generated tension leveler waste water, introducing the tension leveler waste water into a second sedimentation and ultrafiltration mechanism for treatment, and obtaining second treated desalted water; introducing the second treated desalted water into a water quenching tank and a desalted water circulation tank for circulation, collecting part of generated water quenching waste water, introducing the water quenching waste water into a third sedimentation and ultrafiltration mechanism for treatment, and obtaining third treated desalted water; and introducing the third treated desalted water into a cleaning section for use. The desalted water is utilized in series, the use amount of the desalted water is saved, waste water discharge is reduced, the treatment load, treatment scale and treatment cost of oil-containing waste water are reduced, and the water production and water supply pressure of the desalted water are relieved.

The application relates to the field of triple-negative breast cancer treatment and relates to synthesis of an acid-responsive amphiphilic liposome and application of the acid-responsive amphiphilic liposome in tumor treatment. A chemotherapeutic drug, a phospholipid, cholesterol and a polyethylene glycolized lipid are dissolved in an organic solvent chloroform, vacuum rotary evaporation is carried out under certain temperature and rotation rate, a water phase is added for hydration, a polypeptide nanogold cluster solution is added for ultrasonic treatment, then crushing, molecular sieve screening, dialysis and ultrafiltration are carried out to obtain a pH-sensitive liposome; in the preparation process, the phospholipid spontaneously forms a kind of biological membrane-like phospholipid bilayer membrane vesicle in water, and the chemotherapeutic drug and the nanogold cluster are wrapped in the vesicle. The pH-sensitive liposome can target the triple-negative breast cancer tumor site through pH response, can improve the solubility of the chemotherapeutic drug, can realize high-efficiency treatment effect of the drug at a low dose, can obviously reduce the toxic side effect of the chemotherapeutic drug, and can realize effective treatment of the triple-negative breast cancer.

The present application relates to the field of functional tea preparation technology, in particular to a health-preserving black tea rich in dendrobium polysaccharide and a preparation method thereof, comprising the following steps: pre-treating tea fresh leaves by spreading in the dark, subjecting fresh dendrobium strips to successively ultra-low temperature wall breaking, ultrasonic-assisted enzymatic hydrolysis and ultrafiltration purification to obtain a high-activity dendrobium polysaccharide enrichment liquid; subjecting the tea fresh leaves to primary withering by hot air, secondary withering under low oxygen after vacuum pulse spraying of the polysaccharide liquid; pulse gradient rolling of the tea leaves under a low-temperature environment, ultrasonic atomization supplementary spraying of the polysaccharide liquid in the heavy rolling stage; inoculation of the rolled and twisted leaves with a compound microbial inoculum, and fermentation under segmented temperature and oxygen control; and gradient drying by infrared, hot air and microwave. The present application solves the problems of polysaccharide loss and flavor fragmentation of existing dendrobium black tea, can efficiently enrich and stably retain dendrobium polysaccharide, realize deep and uniform loading of the polysaccharide, greatly improve the health-preserving value of the product, optimize the sensory quality of the black tea, coordinate the aroma and taste, and has strong controllability, is suitable for large-scale production, and takes into account the efficacy and drinking taste.

This invention discloses a method for preparing protein powder through low-temperature separation, comprising the following steps: S1: raw material pretreatment; S2: low-temperature defatting; S3: multi-stage low-temperature membrane separation; S4: low-temperature concentration; S5: freeze-drying; S6: post-treatment. This invention uses animal-derived whey as raw material, sequentially performing raw material pretreatment, low-temperature defatting, multi-stage low-temperature membrane separation, low-temperature concentration, freeze-drying, and post-treatment. The temperature is controlled within the range of 0–10°C throughout the process. By optimizing the pretreatment process to remove impurities and heat-sensitive interfering substances, and employing a combination of gradient-pore-size ceramic membranes and ultrafiltration membranes, efficient separation and purification of proteins are achieved. Combined with vacuum low-temperature concentration and freeze-drying technology, the active components of whey protein are preserved to the maximum extent. This invention solves the problems of large protein activity loss, low purity, high energy consumption, and easy introduction of chemical contaminants in existing preparation methods.

The application belongs to the field of food processing and biomedical technology, and discloses a preparation method of a salty taste enhancing peptide-naringenin compound and application of the compound in improving cognitive decline. The compound is prepared by compounding salty taste enhancing peptides from soft-shelled turtle eggs and naringenin at a ratio of 20-150:1 (w:w). The preparation process comprises the following steps: soft-shelled turtle egg enzymolysis, ultrafiltration, freeze-drying to obtain salty taste enhancing peptides, mixing the salty taste enhancing peptides with a naringenin solution, concentration, and freeze-drying. The compound has good stability, salty taste enhancing and antioxidant activities, can reduce the use of salt and maintain salty taste. The compound can improve cognitive decline and anxiety caused by aging and diabetes, improve autonomous activity, memory and social skills, strengthen physical fitness, protect nerve cells and skeletal muscles, maintain brain tissue health, and can be applied to the preparation of related preparations for improving cognitive decline.

The application provides a high-activity iPSC exosome and a preparation method and application thereof, relates to the technical field of biological medicine, and the preparation method comprises the following steps: obtaining induced pluripotent stem cells; performing flow cytometry sorting to obtain an iPSC subpopulation; performing suspension expansion culture on the iPSC subpopulation to collect a cell culture solution; sequentially performing clarification filtration, ultrafiltration concentration and CD9 antibody affinity chromatography purification, and then eluting and collecting an eluent containing exosomes. The induced pluripotent stem cells overcome donor dependence and batch difference. The specific screening of a cell subpopulation that is positive for CD105, CD73 and CD90 and maintains pluripotency eliminates heterogeneity and guarantees the high activity and uniform efficacy of the exosomes. The use of microcarriers for serum-free suspension culture breaks through the yield bottleneck and realizes large-scale production. Finally, the high-purity and high-activity exosomes are efficiently extracted through ultrafiltration and CD9 antibody affinity chromatography purification.

The application provides a preparation method of a polyamide reverse osmosis membrane, comprising the following steps: (1) immersing a non-woven fabric supported ultrafiltration membrane into an aqueous phase solution, and removing the excess aqueous phase solution on the surface of the ultrafiltration membrane after taking out; (2) immersing the ultrafiltration membrane obtained in the step (1) into an oil phase solution to perform interfacial polymerization, and then removing the excess oil phase solution on the surface of the ultrafiltration membrane; (3) coating an alcohol solution containing dansyl on the surface of the membrane obtained in the step (2), performing heat treatment, cleaning with hot water after the reaction is completed, and obtaining the reverse osmosis membrane. The amino group in dansyl reacts with acyl chloride and is grafted in the polyamide network. The tertiary amine in dansyl accepts protons in an acidic solution and shows hydrophilicity, which improves the hydration water content of the polyamide and the stability of the polyamide structure. The naphthalene group in dansyl occurs hydrophobic aggregation in an alkaline solution, which reduces the size and polarity of the polyamide hole, so that the polyamide reverse osmosis membrane with acid and alkali resistance and high boron removal is prepared.

The present application belongs to the field of environmental functional materials and water treatment technology, and aims to provide a preparation method of ceramic membrane based on endogenous pore forming and catalysis of sludge containing algae. The method comprises the following steps: taking dewatered sludge of water supply plant in algae outbreak period of water source, drying, ball milling and sieving to obtain sludge powder; soaking and washing after using organic acid with complexing ability as heavy metal removal agent, pre-carbonization treatment, dry pressing into embryo, sintering into membrane sheet; primary activation treatment in weak oxidizing strong acid, washing and heating treatment for secondary activation to obtain ultrafiltration ceramic membrane product. The method is simple in operation steps, easy to implement and green and environmental protection; the prepared ceramic membrane has good separation performance and high mechanical strength, can catalyze oxidizing agent commonly used in water treatment while filtering, and free radicals are generated by decomposition to degrade organic matter; or catalyze common cleaning agent sodium hypochlorite during membrane cleaning to generate free radicals to strengthen the cleaning effect.

This invention discloses an integrated pretreatment tube and its working method for detecting mycotoxins in camellia milk. The pretreatment tube includes an outer tube with an outer tube cap at its top, a middle tube inside the outer tube with its top protruding from the outer tube cap and a middle tube cap at its top, and an inner tube inside the middle tube with its top protruding from the middle tube cap and its top cap. An ultrafiltration tube is located inside the inner tube, with its outer sidewall conforming to the inner sidewall of the inner tube, and its bottom forming an ultrafiltration element. At least one set of micropores is provided on the sidewall of the middle tube, and a first microporous filter membrane covers these micropores. At least one set of micropores is also provided on the sidewall of the inner tube, and a second microporous filter membrane covers these micropores. Through holes are provided on the sidewall of the ultrafiltration tube, and these through holes are directly opposite the positions of the second microporous filter membrane. A QuEChERS reagent pack is located at the bottom of the middle tube, and a salt pack is located at the bottom of the outer tube.

This invention provides the application of adamantane-1,3-diamine in the preparation of reverse osmosis membranes with controllable desalination performance, the reverse osmosis membrane itself, its preparation method, and its application, relating to the field of reverse osmosis membrane preparation. The controllable desalination performance reverse osmosis membrane includes a polysulfone ultrafiltration membrane and a polyamide layer disposed on the surface of the polysulfone ultrafiltration membrane; wherein the polyamide layer is formed by interfacial polymerization of an aqueous amine solution and an organic acyl chloride solution followed by heat treatment and curing; and the aqueous amine solution contains adamantane-1,3-diamine. This invention, by adding adamantane-1,3-diamine, prepares a series of SWRO membranes with similar surface morphology and permeate flux, but different desalination performances. This allows for flexible fulfillment of diverse application requirements without altering existing permeate processes and membrane cleaning processes, improving the overall efficiency and economy of the system.

The application discloses a segmented ceramic ultrafiltration treatment device and method for mine water recycling, relates to the technical field of mine water treatment, and comprises a treatment assembly, a centrifugal pump, a ceramic ultrafiltration cartridge arranged on one side of the centrifugal pump, a transmission pipe fixed on the ceramic ultrafiltration cartridge, a liquid pumping pump communicated with one end of the transmission pipe, a distribution assembly arranged at the bottom of the ceramic ultrafiltration cartridge and a transmission cartridge fixed on the ceramic ultrafiltration cartridge. Through the arrangement of the adjusting assembly, the drainage assembly and the gas storage assembly, the liquid level height in the transmission cartridge can be adjusted in cooperation with the floating ball, the vertical rod is displaced up and down along with the fluctuation of the liquid level, the transmission space is dynamically adjusted according to the injection water flow rate, the liquid transmission pressure is further stabilized, and when the compressed gas is used for back-flushing and cleaning the ceramic ultrafiltration cartridge, the drainage operation is completed in cooperation with the support and the trigger, manual operation is not needed, the operation steps are simplified, and the overall working efficiency is improved.