1191results about "Ultrafiltration" patented technology

A method of preparing a polyamide membrane with multi-level pore structure mediated by protein fiber network includes the steps of: preparing protein fiber; quenching and carrying out dialysis; loading protein fiber network on ultrafiltration membrane; preparing aqueous and organic phase solutions; and carrying out interfacial polymerization, which can solve the problems of the integrity and separation performance of the polyamide layer being affected by low porosity of the base membrane and uneven distribution of amine monomers. The polyamide membrane prepared by the method of the present invention greatly improves the water flux while ensuring a high salt rejection rate. At the same time, the introduction of the protein fiber network also enhances the mechanical strength and anti-pollution ability of the membrane.

The application discloses a preparation method of a hydrophilic oil-water separation anti-pollution membrane and the anti-pollution membrane and application thereof, and prepares MNRs material; the MNRs material is dispersed in dimethylacetamide, is uniformly stirred, polyvinylpyrrolidone is added, and stirring is continued, and a first mixture is obtained through ultrasonic treatment; the first mixture is mixed with polyvinylidene fluoride to obtain a second mixture, and the second mixture is stirred; the treated second mixture is dip-coated on a carrier, the dip-coated carrier is treated in deionized water to obtain an ultrafiltration membrane; the ultrafiltration membrane is soaked in a tea polyphenol solution with a Tris-HCl buffer solution, and is shaken to obtain the hydrophilic oil-water separation anti-pollution membrane. The hydrophilic oil-water separation anti-pollution membrane has excellent separation efficiency and flux recovery rate for four different oil-water mixtures of kerosene, gasoline, edible oil and n-hexane. The preparation process of the oil-water separation membrane is simple, the cost is low, and the reaction condition is mild; when the oil-water separation membrane is applied to organic wastewater separation, the oil-water separation membrane has the advantages of high efficiency, good removal performance and good recycling performance.

The invention relates to a water treatment and membrane separation technology, and provides an integrated catalytic separation membrane, a preparation method thereof, and a water treatment method and system. According to the membrane, polyvinylidene fluoride is used as a continuous phase to form a porous matrix, and cerium dioxide is embedded and fixed in a mode of uniform dispersion in a membrane body in a phase inversion membrane forming process; in the presence of illumination and peroxysulfate, active species are generated through in-situ activation on a membrane-water interface, and membrane separation is completed synchronously. The water treatment method comprises the following steps: adding peroxymonosulfate or peroxydisulfate into a water body to be treated, and filtering through the membrane under illumination; the photothermal effect generated by organic matter degradation intermediates in operation inhibits membrane pollution and maintains flux. According to the invention, short-range coupling of active sites and mass transfer channels is realized, the medicament and energy utilization rate is improved, the coating stripping and metal dissolution risk is reduced, and the method is suitable for drinking water pretreatment, reclaimed water deep treatment and treatment of water containing natural organic matters / humic acid.

The invention provides a dye / ion separation membrane with pore diameter and charge coordinated regulation and control as well as a preparation method and application thereof, and belongs to the field of preparation of a double-layer ionic covalent organic framework (COFs) composite membrane. An aromatic polyamide ultrafiltration membrane is used as a base membrane, and a double-layer COFs membrane is constructed on the surface of the aromatic polyamide ultrafiltration membrane through a multi-time interfacial polymerization method. The first layer is a positive charge COFs layer formed by reacting a guanidyl monomer with 1, 3, 5-triformyl phloroglucinol (Tp); and the second layer is a negative charge COFs layer formed by reacting ionic aromatic diamine with Tp. By adjusting the type and concentration of the monomers, the pore diameter and charge distribution of the film layer can be synergistically regulated and controlled, and the double-layer composite film which is stable in structure and orderly stacked is constructed. The obtained membrane has molecular sieve separation and electrostatic regulation functions, can efficiently intercept organic dye molecules in high-salt printing and dyeing wastewater, and has high flux, high selectivity and good chemical stability.

The invention discloses a modified microfiltration membrane for enriching biological particles and a preparation method and application thereof, and belongs to the technical field of biological separation.The preparation method of the modified microfiltration membrane comprises the following steps that a mixed cellulose ester microfiltration membrane is provided and subjected to alkali liquor activating treatment; placing the activated membrane in a weakly alkaline buffer solution for balancing; the preparation method comprises the following steps: in a weakly alkaline buffer solution, firstly contacting the surface of the membrane with a tannic acid solution to carry out a first reaction, and then directly adding a polyethyleneimine solution to carry out a second reaction under the condition of not replacing a system, so as to form a phenol-amine cross-linked network on the surface of the membrane in situ; sodium cyanoborohydride is continuously added for reduction stabilization treatment, and the modified microporous filter membrane is obtained. The modified microporous filter membrane prepared by modifying the microporous filter membrane with tannic acid and polyethyleneimine can realize one-step synchronous enrichment of all negatively charged targets, and the problems of target loss, efficiency loss and the like caused by a multi-step process are avoided from the source.

A water treatment system includes a main container defining an interior and having an upper edge, a reservoir removably insertable into the interior and located upon the upper edge, the reservoir defining a cartridge seat including a plurality of holes in communication with a helical thread, and an annular landing vertically depending from the thread, a filter cartridge including a cap associated with a sump body and having a filter media in the sump body, the cap having a plurality of radially outwardly projecting pins constructed and arranged for engaging the holes and the helical thread, an annular seal disposed externally on the sump body and spaced below the cap. The filter cartridge and the cartridge seat are configured so that upon the cap pins engaging the helical thread, upon reaching a fully engaged position of the cap in the thread, the seal is compressed against the annular landing.

To provide a method for separating and purifying extracellular vesicles.SOLUTION: Wherein the hollow fiber membrane has an inner diameter of 0.2 mm to 1.4 mm and a molecular weight cut-off of 100,000 to 1,000,000, and the filtration method comprises a first filtration step of pressurizing and filtering a culture supernatant of mesenchymal stem cells through a first opening on one end side of the hollow fiber membrane to separate the culture supernatant into a permeated liquid and a first concentrated liquid, and a second filtration step of pressurizing and filtering the first concentrated liquid through a second opening on the other end side of the hollow fiber membrane; A method for separating and purifying extracellular vesicles, the method comprising a second filtration step of separating the extracellular vesicles into a permeate and a second concentrate, wherein a concentrate having an increased concentration of the extracellular vesicles is obtained by alternate tangential flow filtration in which the first filtration step and the second filtration step are alternately performed a plurality of times, and a membrane surface speed in the first filtration step and the second filtration step is 0.3 to 2m / sec.SELECTED DRAWING: None

A water treatment plant or system for the production of permeate includes a reverse osmosis stage and a permeate stage. The reverse osmosis stage can include a piping system having a supply line for process input water, a reverse osmosis pump, and a reverse osmosis tank. The reverse osmosis tank has an inlet for process input water coming from the reverse osmosis pump, a membrane, and an outlet for permeate. The permeate stage, which can have a line system forming a circuit, can include a permeate tank, a permeate pump, and a tapping point for connecting at least one consumer or user of permeate. The reverse osmosis stage and the permeate stage can be connected to one another via a connecting line in such a way that the reverse osmosis stage feeds the permeate stage with permeate. The circuit of the permeate stage can include a sterile filter.

The invention relates to the technical field, and discloses a product dehydration optimization method based on an inclined box dense grader and an HNS ultrafilter, which comprises the following steps: introducing slurry into a vibration inclined box dense grader through a feed distribution system, and dynamically adjusting the vibration frequency, amplitude and period by combining an intermittent vibration system and a slurry concentration detection control system, the concentration self-adaptive control is realized; overflowing slurry is conveyed into an HNS ultrafilter through a slurry conveying system, and efficient separation is achieved through a centrifugal force field and cross flow filtration; the filtrate is shunted by a clear water self-circulation system and is used for process recycling and equipment cleaning; and the concentrated discharged slurry of the HNS ultrafilter and the underflow of the thickener are mixed and output or return to the previous process. The general drawing arrangement is optimized, the slurry dehydration efficiency is improved, and valuable metal is recycled to the maximum extent.

The application discloses a high-precision intelligent control and adjustment method for stachydrine fermentation and purification, and relates to the field of biological fermentation process control. The method comprises the following steps: obtaining a stachydrine mixed solution in a first sugar content interval; inoculating Eurotium cristatum at a first preset temperature after sterilization to start fermentation and obtain an initial fermentation liquor; monitoring the content ratio change of stachydrine and non-target sugars in real time through HPLC to obtain sugar content monitoring data; introducing a membrane separation device for selective dialysis to obtain membrane permeation rate monitoring data; performing dynamic evaluation on stachydrine enrichment according to the sugar content monitoring data and the membrane permeation rate monitoring data, generating a dynamic adjustment strategy for fermentation conditions based on the evaluation results; and performing fermentation process adjustment control. The method solves the technical problem that the existing stachydrine fermentation and purification cannot realize real-time and accurate monitoring and dynamic adjustment of fermentation conditions, resulting in low fermentation efficiency and low purity, and achieves the technical effect of improving the fermentation efficiency and purity of stachydrine through intelligent control of the fermentation process.

The utility model discloses a modularized ultrafiltration device which comprises a main machine module, more than two membrane frame modules and an online medicine washing module, wherein the main machine module, the membrane frame modules and the online medicine washing module are modularized and are respectively packaged in a main machine module box body, more than two membrane frame module box bodies and an online medicine washing module box body; the main machine module box body, all the membrane frame module box bodies and the online medicine washing module box bodies are sequentially arranged along a straight line, and a backwashing communicating pipe, a water inlet communicating pipe, a water outlet communicating pipe and a water drainage communicating pipe which are arranged along a unified pipe position are arranged on the side surfaces of the main machine module box body; the internal corresponding host module, each corresponding membrane frame module and the corresponding online medicine washing module are connected with a corresponding backwashing communicating pipe, a corresponding water inlet communicating pipe, a corresponding water outlet communicating pipe or a corresponding water drainage communicating pipe for communicating operation; the water filtering method comprises an inlet water filtering and backwashing alternate circulation mode and a regular online medicine washing mode. According to the utility model, the running reliability and flexibility of the ultrafiltration system are improved, and the water supply stability of the ultrafiltration device is fully ensured.

The present invention provides methods for the manufacture of amides from their corresponding nitriles using a biocatalyst and purification of the manufactured amides using membrane filtration. The invention also relates to methods of using membrane filtration for isolating and reusing biocatalysts. More specifically, the inventive method produces a crude aqueous acrylamide (AMD) by feeding acrylonitrile (AN), water, and a biocatalyst with nitrile hydratase activity into a reactor. After complete conversion of AN to AMD, the crude reaction is directly purified by membrane filtration to produce a purified AMD monomer (without nitrile hydratase activity) and a recovered biocatalyst with nitrile hydratase activity. Purified monomer (e.g., AMD without enzyme activity) in the permeate may be stored, transported, and used for polymerization. Biocatalyst in the retentate retains enzymatic activity and may be reused.

The filtration element (1) includes a filtration membrane (3) enclosed within a housing (2). The element has openings for removing filtrate and concentrate. A filter (11) is disposed within the element (1) at an opening (6) in the housing (2) for introducing feed into the interior volume (20) of the filtration element (11). Alternatively, the filter (11) may be positioned within an end cap (7) associated with such opening. Pre-filtration is thus performed within the filtration element 1 itself, rather than as a separate upstream operation. The presence of the filter (11) does not significantly increase the pressure drop across the filtration module. Flocculated particles and other debris that accumulate on the membrane can be easily removed by backwashing, despite the presence of the filter (11).

Provided is a production method in which a useful organic compound is continuously concentrated, separated, and recovered with low energy. Also provided are a production method and a production device for concentrating, separating, and recovering a useful organic compound after membrane extraction of the organic compound from a solvent. This production method: includes a concentration step for using a reverse osmosis membrane to concentrate, by osmotically assisted reverse osmosis (OARO), an organic compound extracted into an organic solvent that does not contain water; and includes, as a pre-step before the concentration step, an extraction step for using a separation membrane to extract, into the organic solvent, an organic compound that has dissolved in a solvent A. This production device is provided with: a solvent A in which an organic compound has been dissolved; an organic solvent; a hollow fiber membrane; a configuration A in which the solvent A circulates outside the hollow fiber membrane; a configuration B in which the organic solvent circulates inside the hollow fiber membrane; a reverse osmosis membrane; and a configuration C in which the organic solvent, after having passed through the inside of the hollow fiber membrane, flows on the high-pressure side of the reverse osmosis membrane and branches into a concentrated solution and a reflux solution, and the reflux solution flows on the low-pressure side of the reverse osmosis membrane and circulates as a diluted solution.

The utility model relates to an ultrafiltration membrane filtration system. The filtration system comprises a water supply pump, a pre-filter, a circulating cross-flow pump and a plurality of ultrafiltration membrane filtration units, the water supply pump is connected with the pre-filter through a pipeline; a water outlet of the pre-filter is connected with a water inlet of the circulating cross-flow pump through a water supply pipeline; a water outlet of the circulating cross-flow pump is communicated with the circulating water inlet pipeline; a water inlet of the ultrafiltration membrane filtering unit is communicated with a circulating water inlet pipeline through a circulating water inlet branch; a water inlet valve is arranged on the circulating water inlet branch; a concentrated water port of the ultrafiltration membrane filtration unit is communicated with a circulation loop pipeline through a circulation recovery branch, and the circulation loop pipeline is further communicated with a water supply pipeline; a circulating valve is arranged on the circulating recovery branch; a water producing port of the ultrafiltration membrane filtering unit is communicated with a water producing pipeline through a water producing branch; the circulating water inlet branch is also communicated with a water drainage pipeline; and a backwashing valve is arranged on the water drainage pipeline. According to the scheme provided by the utility model, the performance of water production and backwashing can be improved, and the flushing structure of ultrafiltration membrane filtration is simplified.

The application provides a membrane concentration device and a milk source concentration system, and belongs to the technical field of membrane filtration. The membrane concentration device comprises an ultrafiltration membrane assembly body, a detection tube, a visual assembly and a processor. The inlet end of the detection tube is in communication with the filtrate outlet of the ultrafiltration membrane assembly body. The side wall of the detection tube is provided with a transparent window, the visual assembly is located outside the detection tube and is arranged towards the transparent window, and is used for acquiring image data of the filtrate in the detection tube. The processor stores standard data. The processor is used for comparing the image data detected by the visual assembly with the standard data to determine whether there is a broken wire in the ultrafiltration membrane assembly body. The integrity of the core membrane element can be continuously monitored, the broken wire condition can be found in time, the detection sensitivity for a small amount of broken wire is high, the dependence on manual detection is reduced, the operation cost is effectively reduced, and the missed detection rate is reduced.

The invention discloses a preparation method and application of a high-flux, high-interception and structure-controllable asymmetric ultrafiltration membrane, and belongs to the technical field of ultrafiltration membranes. The preparation method of the asymmetric ultrafiltration membrane comprises the following steps: mixing 20-30 parts by weight of an ethylene-vinyl acetate copolymer, 40-70 parts by weight of a good solvent, 4-20 parts by weight of a pore-foaming agent, 10-25 parts by weight of a cosolvent and 0-10 parts by weight of a plasticizer, heating and stirring, standing and defoaming to obtain a homogeneous membrane casting solution; coating a substrate with the membrane casting solution and then carrying out pre-evaporation treatment; and immersing the pre-evaporated material into a coagulating bath to carry out phase separation and solvent exchange for curing, and washing to obtain the ultrafiltration membrane. Effective preparation of the asymmetric ultrafiltration membrane with high flux, high interception and controllable structure is realized, and the preparation method is simple to operate, clear in process, high in practicability and beneficial to product industrialization.

A plant extract production method comprising: an extraction step for obtaining an extract by extraction from a plant dispersion containing a plant; a filtration step for obtaining a filtrate by filtering the extract by means of cross-flow filtration; and a dialysis step for dialyzing the filtrate by means of electrodyalysis.

The application discloses a kind of electronic grade di-tert-butyl amino-silane manufacturing method, which is sequentially provided with raw material reaction system, centrifugal double-layer membrane separation device, triple nitrogen gas protection rectifying kettle assembly and three-waste recovery treatment device from feeding to discharging in the manufacturing device used in the manufacturing method;Solid-liquid separation device and reactant detection device are arranged between the raw material reaction system and the centrifugal double-layer membrane separation device;Microporous filter membrane with filter pore size 1 μm and nanofiltration membrane with pore size 0.001 μm-0.002 μm are sequentially arranged from inside to outside in the centrifugal double-layer membrane separation device;The intermediate layer of the centrifugal double-layer membrane separation device is communicated with the triple nitrogen gas protection rectifying kettle assembly, and the intermediate layer and the triple nitrogen gas protection rectifying kettle assembly are provided with pre-purified product detection device;The gas and solid discharged from the triple nitrogen gas protection rectifying kettle assembly are all introduced into the three-waste recovery treatment device.The production process of the application is environmentally friendly, the types of raw materials are simple, the emissions are less, and the product purity is high.

A first unit (1) for treating a biological process liquid comprises a first side face (2), a second side face (3) and a front face (4) meeting the two side faces. The front face comprises: a plurality of valves (7) adapted to receive one or more legs (8) of the disposable flow path (6) and to act on the one or more legs (8) of the disposable flow path (6); optionally, one or more pumps (10) adapted to receive the one or more legs of the disposable flow path and to act on the one or more legs of the disposable flow path; optionally, one or more sensors (11) adapted to receive and measure one or more parameters in one or more legs of the disposable flow path; wherein the plurality of valves and optional pumps and sensors are vertically offset from each other to give a slope of at least 3.0 degrees from a horizontal plane (h) to one or more legs of the disposable flow path received by the valves and optional pumps and sensors.

The utility model discloses a kind of ultrafiltration membrane test platforms, including box, the one side of box is fixed with the guide material support shell of inclined distribution, the inside of guide material support shell is placed with ultrafiltration membrane, the upper end both sides of box are provided with automatic clamping liquid injection mechanism for ultrafiltration membrane clamping liquid injection detection, the automatic clamping liquid injection mechanism includes movable liquid injection assembly and fixed support component, the lower end of box is provided with automatic feeding mechanism for the ultrafiltration membrane lifting feeding, the utility model is realized from feeding, clamping, the automation of testing by integration system, not only eliminate physical load and high-pressure slip risk brought by artificial lifting, also greatly improve the security and stability of test operation, simultaneously, automated process significantly shortens single test cycle, can continuous batch operation, to effectively improve the detection efficiency and capacity of ultrafiltration membrane.

A two-stage membrane separation process for dealcoholizing a starting liquid (F) containing water and alcohol, in particular ethanol, as well as flavorings and / or nutrients, comprising a first process stage with a first membrane separation unit (1) having at least one separation membrane (12) and a second process stage downstream of the first process stage with a second membrane separation unit (2) having a pervaporation unit (20) with at least one pervaporation membrane (22), is characterized in that the starting liquid (F) is introduced under overpressure into a primary-side chamber (13) of the first membrane separation unit (1), in the secondary-side chamber (14) downstream of the at least one separation membrane (12) of which a lower pressure prevails than in the primary-side chamber (13).wherein water and alcohol as an alcoholic liquid permeate (P1) pass through the at least one separation membrane (12) into the secondary-side space (14) and wherein water or a water-containing liquid is added directly or indirectly as a diluent (V) to a retentate (R1) retained by the at least one separation membrane (12) in the primary-side space (13), the alcoholic liquid permeate (P1) is further treated in the pervaporation unit (20) of the second membrane separation unit (2), wherein the alcoholic liquid permeate (P1) is first introduced into the primary-side space (23) of the pervaporation unit (20), where the alcohol evaporates in at least one pervaporation membrane (22) and as an alcoholic gaseous permeate (P2) into a secondary-side space (26) of the pervaporation unit downstream of the at least one pervaporation membrane (22). (20) occurs,and wherein the water of the alcoholic liquid permeate (P1) is retained as retentate (R2) in the primary-side space (23) of the pervaporation unit (20) and retentate (R2) of the second membrane separation unit (2) is reused as dilution liquid (V) for the retentate (R1) of the first membrane separation unit (1) and is supplied to the retentate (R1) of the first membrane separation unit (1) directly or indirectly.

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.

This invention provides a self-polymerizing microporous polymer hollow fiber ultrafiltration membrane, its preparation method, and its application, belonging to the field of ultrafiltration membrane technology. This invention mixes a self-polymerizing microporous polymer (PIM), a plasticizer, and an organic solvent to obtain a spinning solution. The spinning solution is then used for wet spinning to obtain a hollow fiber ultrafiltration membrane in one step. In this invention, the self-polymerizing microporous polymer (PIM) is added during the spinning process. The PIM material cross-links internally through aromatic ether bonds (C-O-C) to form a network structure, while micropores are generated during the network weaving process, thus forming a continuous pore network structure, thereby improving the performance of the ultrafiltration membrane. The hollow fiber ultrafiltration membrane prepared by this invention using a self-polymerizing microporous polymer with a specific structure exhibits good hydrophilicity, with a permeability coefficient of over 100 μm. ‑2 h ‑1 The above features enable efficient filtration under low pressure, reducing energy consumption.

A multi-stage filtration system for filtering a feed is described. The system comprises a plurality of filtration units and one or more concentrate lines. A first filtration unit is arranged to be connected to a feed line for feeding the feed to the filtration unit. The concentrate line is connected to the first filtration unit for collecting a concentrate filtered out of the feed by the first filtration unit. A second filtration unit is connected to the concentrate line for feeding the concentrate to the second filtration unit. The system is configured for selectively switching at least one further filtration unit between a first operation mode, in which the filtration unit is arranged to filter the feed or concentrate from one of the lines, and a second operation mode in which the filtration unit is arranged to filter the concentrate from another of the lines.

The utility model provides a novel plate-type liquid cooling secondary side water ultrafiltration mechanism, relates to the technical field of plate-type liquid cooling, and aims to solve the problems that the existing secondary side is a closed system, the temperature of circulating water is usually 40-45 DEG C, the temperature range is a higher point of a suitable temperature curve in a microorganism logarithmic multiplication period, and the circulating water cannot be subjected to ultrafiltration after one or two months of water replacement and load operation. The microorganisms exceed the standard and break through 1000 CFU / ml, so that the heat exchange efficiency is reduced, and meanwhile, a heat exchange pipeline in a server is easily blocked; according to the utility model, by arranging the ultrafiltration assembly, when heat dissipation operation is carried out, one group of circulating water pipeline is communicated with the water inlet pipe A and the water outlet pipe A to form a primary side, the other group of circulating water pipeline is communicated with the water inlet pipe B and the water outlet pipe B to form a secondary side, and then the ultrafiltration piece is arranged on the pipeline of the secondary side; and microorganisms in the heat dissipation carrier are filtered, so that the situation that the final heat dissipation performance of the whole device is affected due to pipeline blockage caused by the microorganisms is avoided.

The utility model discloses a laminated autorotation ultrafiltration membrane device which comprises a bracket, an ultrafiltration membrane assembly, a filter cartridge, a rotating assembly, a hose, a blow-off pipe and a flow guide assembly, the ultrafiltration membrane assembly comprises a vertical pipe connected with a support bearing, a backwashing pipe arranged on the outer side of the vertical pipe, a first valve arranged on the vertical pipe and a plurality of ultrafiltration membrane laminations arranged on the vertical pipe, the filter cartridge is fixed at the top end of the support through screws, the rotating assembly is arranged on the support, the hose is arranged on the backwashing pipe, and the ultrafiltration membrane laminations are arranged on the backwashing pipe. The blow-off pipe is arranged at the bottom of the support, a second valve is arranged on the blow-off pipe, and the flow guide assembly is arranged on the support. According to the utility model, by arranging the ultrafiltration membrane assembly, the filter cartridge, the rotating assembly, the hose and the blow-off pipe, under the condition that the use of the ultrafiltration membrane device is not influenced, the self-rotating effect is realized, so that filtration and impurity removal are facilitated, and meanwhile, by arranging the flow guide assembly, liquid drainage during self-rotating is facilitated.

A liquid purification system includes a raw liquid supply line with a sorbent dispenser connected to an inlet of a filtration cartridge with a precoated layer of sorbent formed and removable by flushing and a purified liquid line connected to a purified liquid output of the filtration cartridge. The system is configured to decant spent sorbent and return most of the flushing liquid to the raw liquid supply line. A flushing liquid and sorbent separation device is connected to a flushing liquid outlet of the filtration cartridge, and a clarified flushing liquid outlet of the flushing liquid and sorbent separation device is connected to the raw liquid supply line. The filtration cartridge is made as a hollow-fiber cartridge.

The invention relates to a green process for extracting natural components of pericarpium citri reticulatae with water and application of the natural components in a beverage. The process comprises the following steps: crushing and drying a dried orange peel raw material; extracting with water at 105-125 DEG C under 0.8-1.5 MPa under a low-oxygen condition to obtain a first extracting solution and first-stage residues; the residues are extracted at the temperature of 130-150 DEG C and the pressure of 1.5-2.2 MPa, and a second extracting solution is obtained; treating the second extracting solution at the temperature of 145-165 DEG C and the pressure of 1.8-2.5 MPa to obtain a low-ester pectin component containing bound flavone; mixing the first extracting solution with the low-methoxyl pectin component, and homogenizing, so that the volatile oil component is dispersed in the water phase containing the low-methoxyl pectin component; and concentrating and / or drying the obtained dispersion to obtain the pericarpium citri reticulatae extract. The extract can be used as a natural flavor additive for beverages.

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.