218 results about "Microfiltration" patented technology

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 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 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 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.

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 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 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%.

The invention belongs to the field of water treatment, particularly relates to a drainage cooperative treatment system for two desalted water production lines, and provides a drainage cooperative recycling system and a recycling method for the working condition that an ion exchange process desalted water production line and a reverse osmosis membrane process desalted water production line run in parallel. Most of positive and negative washing drainage water in the two production lines is subjected to microfiltration treatment and then is used as raw water of the reverse osmosis membrane process desalted water production line, so that high-efficiency reuse of the sewage water is realized, the consumption of the raw water, namely fresh water, of the two desalted water production lines is greatly reduced, the sewage yield is also reduced, and the yield of the desalted water is improved.

The utility model relates to the technical field of ultrapure water machines, and discloses a laboratory ultrapure water machine with a function of preparing different water qualities, which comprises a water purifier body and a sterile water tank, and a PP cotton filter, an activated carbon filter, a composite filter and an ultrafiltration membrane filter are arranged at the rear position in the water purifier body. The bottom end of the PP cotton filter is connected with a water outlet valve pipe of the sterile water tank through a water conveying pipe; the interior of the water purifier body is divided into a plurality of treatment cavities; through the ultra-purification treatment system, the microfiltration sterilization module, the ultra-purification treatment system, the reverse osmosis drainage pump, the circulating pump and the circulating pipe, water can be treated in sequence according to needs, so that water with different water qualities can be taken, and water flow in the water storage pipeline can be pumped and retreated; the water flow which does not pass the detection can be circulated to the water inlet for secondary or multiple times of treatment, and can be discharged until the water quality reaches the standard, so that the water treatment effect is ensured.

The present invention is an improved system and method of crossflow microfiltration and ultrafiltration with a membrane that is subject to fouling during the filtration process. The system includes a permeate removal conduit for transferring permeate. The permeate removal conduit includes a flexible orifice arranged by flexing and contracting to regulate permeate flow through each membrane module and thereby regulating membrane flux through each membrane in the system. The system also includes a backpulse check valve to enhance delivery of backpulse and membrane cleaning fluids.

The invention discloses a shale gas produced water desalination system regulated and controlled by a dynamic electric field, which comprises an electrochemical hardness removal unit (11), a microfiltration interception unit (13), a reverse osmosis desalination unit (12) and a controller (10), the electrochemical hardness removal unit (11), the microfiltration interception unit (13) and the reverse osmosis desalination unit (12) are sequentially arranged along the inflow direction, the electrochemical hardness removal unit (11) is used for removing hardness components in water through a dynamic electric field, the microfiltration interception unit (13) is used for intercepting precipitates and suspended particles, and the reverse osmosis desalination unit (12) is used for reducing salt; and the controller (10) is respectively connected with the electrochemical hardness removal unit (11) and the reverse osmosis desalination unit (12) and is used for dynamically adjusting the polarity of an electrode so as to relieve membrane pollution in an electric field transformation mode. The invention solves the problems of low efficiency and serious membrane pollution caused by hardness removal and desalination separation in the traditional shale gas produced water treatment process.

The invention belongs to the technical field of traditional Chinese medicine separation and purification, and discloses a method for separating caulis sinomenii alkaloid by a microfiltration-ultrafiltration-nanofiltration-electrodialysis integrated membrane technology. An ultrafiltration membrane electrodialysis device is adopted, the ultrafiltration membrane electrodialysis device comprises an anode plate, a cathode plate and a membrane stack arranged between the anode plate and the cathode plate, and the membrane stack is formed by connecting n groups of electrodialysis units in series, the device sequentially comprises an anode, an anode chamber, [a cation exchange membrane, an acid chamber, an anion exchange membrane, a feeding chamber, an ultrafiltration membrane and a product chamber] n, a cation exchange membrane, a cathode chamber and a cathode from the anode to the cathode. According to the method, the maximum recovery rate of sinomenine hydrochloride can reach 84.1%, the recovery rate of magnoflorine can reach 68.2%, the method is a simple and efficient multi-membrane integrated separation method with low energy consumption and small pollution, and a new thought is provided for separation and purification in the field of traditional Chinese medicine alkaloids.

The utility model provides full-automatic microstrainer cleaning equipment which comprises a box body, a water spraying pipe is arranged in the box body in a sliding mode, a plurality of water spraying heads are arranged on the water spraying pipe, a first connecting pipe is arranged on the front sides of the water spraying heads, a conversion head is arranged on the right side of the first connecting pipe, and a second connecting pipe is arranged at the bottom of the conversion head. A water pump is arranged at the bottom of the second connecting pipe, and a heating wire is arranged on the second connecting pipe. According to the full-automatic cleaning equipment for the microstrainer, the basic requirement for cleaning impurities can be met, the surface of the filter screen can be cleaned through cooperation of a cleaning agent and the moving mechanism, a worker is prevented from disassembling the equipment, time and labor are saved, and the use requirement of people is met.

This invention proposes a single-point multi-source water quality monitoring system for factory-scale aquaculture, comprising an aquaculture pond, a microfiltration pond, and a biofilter pond that are sequentially fluidly connected and form a water circulation system. The system further includes a first water pump, a second water pump, and a third water pump respectively installed in the aquaculture pond, the microfiltration pond, and the biofilter pond. The output ends of the first, second, and third water pumps are fluidly connected to a measuring water tank via pipes. The measuring water tank is equipped with a multi-functional sensor for monitoring water quality. The bottom of the measuring water tank is fluidly connected to the microfiltration pond via a drain solenoid valve. The first, second, and third water pumps, the multi-functional sensor, and the drain solenoid valve are signal-connected to a core control board. This invention solves the problem of water quality monitoring and data comparison across multiple aquaculture water units in a factory-scale aquaculture workshop, and has advantages such as good stability, high integration, and low cost.

The utility model provides an aquaculture container which comprises a container body, an aquaculture system and a circulating water treatment system. A culture area and a water treatment area are arranged in the box body, and the culture area and the water treatment area are arranged in the length direction of the box body. The culture system is arranged in the culture area and comprises an aquaculture pond, and the aquaculture pond is provided with a blow-off pipe. The circulating water treatment system is arranged in the water treatment area and comprises a horizontal pipe precipitation separation device, a biochemical reaction device, a microfiltration device and a sterilization device. According to the aquaculture container, the aquaculture system and the circulating water treatment system are integrated in the container body, and the aquaculture container is reasonable in arrangement, compact in structure, high in space utilization rate, capable of being installed and operated after being directly transported to a destination, low in construction cost and short in construction period.

This invention discloses a rotational molding microfiltration machine, including a housing and a rotating drum. The rotating drum includes a vertically vibrating and rotatable cylindrical frame. A vibration motor is provided at one end of the cylindrical frame, and an inlet is provided at the other end of the cylindrical frame. Wastewater enters the internal cavity of the cylindrical frame through the inlet and passes through a grid screen located around the perimeter of the cylindrical frame to filter out impurities in the wastewater. The impurities adhere to the inner surface of the grid screen. Guide plates are provided at equal angles on the inner surface of the grid screen, and a dirt collection area is formed between adjacent sets of guide plates. This invention utilizes the internal space of the cylinder by providing a flexible adhesive sheet that can swing and resembles a "cow's stomach" structure on the inner side of the filter screen, which greatly improves the efficiency of impurity adhesion. Moreover, with the rotation of the cylinder, the flexible adhesive sheet and the wastewater make surface contact, which easily increases the contact area between the wastewater and the flexible adhesive sheet, resulting in high filtration efficiency.

The invention relates to a method for rapidly detecting adenosine in artificial cordyceps sinensis mycelium powder and application, and belongs to the technical field of medicine component extraction and detection. The cordyceps sinensis mycelium powder is gliocladium roseum strain powder separated from cordyceps sinensis, and the rapid detection method for adenosine in the artificial cordyceps sinensis mycelium powder comprises the following steps: (a) taking about 0.25 g of a sample, and adding 50 ml of 20% ethanol; (b) heating and refluxing at 100 DEG C for 1 hour; (c) performing microfiltration to obtain a test solution; and (d) injecting 5 [mu] l of the test solution into high performance liquid chromatography, separating by using an octadecylsilane chemically bonded silica chromatographic column and 7% acetonitrile as a mobile phase, and inspecting under the wavelength of a 260nm ultraviolet lamp. The method can be used for rapidly detecting the adenosine content in the artificial cordyceps sinensis mycelium powder.

The invention discloses a method for rapidly preparing host cell DNA (deoxyribonucleic acid), which comprises the following steps: S1, pretreatment: adding a sodium salt buffer solution and a precooled ethanol solution into affinity chromatography loading flow-through liquid, magnetically stirring, and standing and incubating at low temperature; s2, capturing by a microporous filter: filtering the pretreated liquid through a micron-aperture filter, and intercepting host cell DNA precipitate; s3, emptying treatment: emptying residual liquid of the micron-aperture filter, and removing residual ethanol through nitrogen purging; s4, circulating dissolution: enabling a dissolution buffer solution to circularly pass through a micron-aperture filter at a set flow rate, and dissolving the intercepted host cell DNA; s5, collection of a target product: collecting a dissolution buffer solution containing the host cell DNA to obtain the target product. The method is controllable in cost, the purity and concentration of the product meet the standard adding requirements of an impurity removal verification experiment in the field of biopharmacy, the experiment reliability and economical efficiency are remarkably improved, and a key technical support is provided for quality control of biological products.

The invention discloses a purification process of hexazinone production wastewater, and relates to the technical field of wastewater treatment. The process comprises the following steps: introducing wastewater of a hexazinone production process into an enamel microfiltration reactor for reaction, and filtering out pretreated wastewater; the pretreated wastewater is pumped into a graphite condensation type oxidation tower, a composite catalyst composed of a sodium methoxide methanol solution and methyl chloroformate is added for a reaction, and oxygenated wastewater is obtained; adjusting the pH value of the wastewater subjected to oxygen catalysis to 7.0-7.5, introducing the wastewater into a biological denitrification reaction tank, and adding a microbial agent compounded by nitrifying bacteria and denitrifying bacteria for reaction to obtain purified wastewater; refluxing 80% of the purified wastewater to a raw material preparation process for hexazinone production for reuse, and discharging the remaining 20% of the purified wastewater after being detected to be qualified; according to the invention, a grading process of pretreatment, catalytic oxidation, biological denitrification and reclaimed water reuse is designed, so that deep purification of high-ammonia-nitrogen COD wastewater is realized.

The invention discloses a method and a device for preparing high-purity white carbon black by resource utilization of high-purity quartz sand acid leaching wastewater in the technical field of white carbon black preparation. Comprising the following steps: S1, evaporating and concentrating the high-purity quartz sand acid leaching wastewater to obtain a concentrated solution; s2, adjusting the pH value of the concentrated solution in the step S1 by using ammonia water, and carrying out multi-stage counter-current extraction on the concentrated solution by using an organic phase solution; s3, firstly performing microfiltration pretreatment on the liquid extracted in S2, and then performing deep filtration treatment through a modified AFO structure membrane; s4, ammonia water is added into the liquid obtained after deep filtration treatment in S3, solid-liquid separation is carried out after sufficient precipitation, fluorine-containing waste liquid and a solid to be treated are obtained, the solid to be treated is washed and dried, and the high-purity white carbon black is obtained. And a reliable technical path with economical efficiency and environmental protection is provided for sustainable development of the white carbon black industry.

This invention proposes a dynamic control method for electrolytic microfiltration water softening based on deep reinforcement learning, belonging to the field of water treatment control technology based on reinforcement learning. It collects three types of data in real time: influent water quality status, process operation status, and effluent water quality compliance, which are then standardized and used as the data base for electrolytic microfiltration water softening. A Markov Decision Process (MDP) framework for electrolytic microfiltration water softening is constructed, defining the system state space, action space, and multi-objective weighted composite reward function to achieve quantitative constraints for multi-objective collaborative optimization. The MDP framework is deeply integrated with deep reinforcement learning algorithms to construct a deep neural network decision model, which is then pre-trained offline to obtain the electrolytic microfiltration control model. The pre-trained electrolytic microfiltration control model is deployed to the field process control system to achieve dynamic issuance of control commands. This invention achieves dynamic and precise control during the electrolytic microfiltration water softening process while saving energy.