1059 results about "Ceramic membrane" patented technology

The invention discloses an anti-fouling piezoelectric ceramic membrane which comprises a support body, a coil and a piezoelectric ceramic separation layer, the support body is made of porous ceramic with a through hole in the middle; the coil is a closed loop composed of a lead coil and a crystal oscillator; the piezoelectric separation layer is coated on the inner wall of the through hole of the support body; and the coil is arranged between the support body and the piezoelectric ceramic separation layer. When a medium containing electrolyte passes through a membrane hole, the coil generates induction direct current, the direct current is converted into positive wave pulse current through the oscillator, the wound and overlapped piezoelectric ceramic membrane separation layer is excited, ultrasonic vibration is generated, and therefore the membrane dirt blocking condition is reduced, the use efficiency of the ceramic membrane is improved, and the maintenance and use cost is reduced.

The invention belongs to the technical field of sewage treatment and membrane separation, and provides an in-situ nondestructive membrane pollution detection system and method based on an ultrasonic transmission signal, and the system comprises an ultrasonic excitation module which is used for generating a sine wave excitation signal which penetrates through a membrane body to excite the ultrasonic transmission signal for pollution detection; the signal processing module is used for continuously collecting and preprocessing ultrasonic transmission signals of the clean membrane body and the membrane bodies with different pollution degrees, extracting ultrasonic transmission signal characteristics under different pollution degrees, and establishing a pollution thickness-signal characteristic mapping model; wherein the ultrasonic transmission signal features comprise a time-frequency domain energy gravity center feature and a frequency attenuation spectrum slope feature; and the pollution detection module is used for judging the pollution stage of the membrane body to be detected based on the pollution thickness-signal feature mapping model, and completing in-situ nondestructive membrane pollution detection. According to the technical scheme, the sludge pollution state in the ceramic membrane and flat membrane filtering process can be monitored in real time, and early warning and pollution dynamic tracking are achieved.

The embodiment of the invention provides a ceramic diaphragm automatic positioning system based on high-precision visual feedback and closed-loop control, and the system comprises a parameter reference setting module which is used for setting a theoretical reference point and a visual detection parameter; the real-time visual detection module is used for collecting an image of the to-be-stacked film and outputting an image coordinate of the mark point; the core operation module is used for converting the image coordinates of the mark points into actual coordinates based on the visual detection parameters, reading a theoretical reference point of the current to-be-stacked diaphragm and calculating a position error vector between the actual coordinates and the theoretical reference point, and the position error vector comprises a translation compensation amount and a rotation compensation amount; and the motion control and closed loop feedback module is used for receiving the position error vector and generating a control instruction to drive the workbench to move. According to the system, through parameterized reference setting, real-time visual detection, intelligent error calculation and real-time motion compensation, the technical limitation is effectively overcome, and the lamination alignment precision and efficiency are remarkably improved.

The invention relates to the technical field of membrane cleaning, in particular to a ceramic membrane backwashing method, electronic equipment and a storage medium. The invention provides a backwashing method of a ceramic membrane. The backwashing method comprises the following steps: firstly, acquiring process parameters of the ceramic membrane during operation in real time; then analyzing a pollution mechanism based on the process parameters, and calculating a comprehensive pollution degree and a dominant pollution type; then, according to the comprehensive pollution degree and the dominant pollution type, a multi-stage backwashing flow state sequence is matched and generated from a predefined multi-stage flow state strategy library; and finally, aiming at each target flow state in the multi-stage backwashing flow state sequence, respectively generating a corresponding gas pulse control parameter and a corresponding water pulse control parameter, and sequentially executing the gas pulse control parameter and the water pulse control parameter. According to the present invention, the multi-stage flow state control dynamically adapting to the pollution characteristics is adopted to replace the traditional fixed flow state mode, such that the problems of insufficient pertinence and poor backwashing effect caused by the fixed flow state are solved, and the backwashing efficiency of the ceramic membrane is improved.

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

The invention discloses a preparation method for simultaneously and efficiently extracting crocodile polypeptide and crocodile oil, and relates to the technical field of biological extraction, crocodile meat is used as a raw material, and heating micro-pressure treatment is sequentially performed to promote component dissolution; a multi-stage enzymolysis process is adopted, alkaline protease, neutral protease and lipase are sequentially used, and a calcium phosphate system is used for assisting filtration and a natural antioxidant is added in a gradient manner in the enzymolysis process; performing plate frame filtration and standing layering subsequently to realize crude separation of the oil peptide; finally, the crocodile polypeptide liquid is subjected to multi-stage membrane filtration and spray drying, the crocodile crude oil is subjected to ultrasonic-assisted fishy smell removal, ceramic membrane fine filtration and gradient cooling phase change refining, and after enzymolysis treatment and before filtration, a composite additive is added into enzymatic hydrolysate and stirred. No organic solvent exists in the whole process, and the product yield, purity and oxidation stability are remarkably improved.

The invention discloses a self-cleaning composite piezoelectric ceramic membrane as well as a preparation method and application thereof, and belongs to the field of composite ceramic membranes. The technical problem that an existing ceramic membrane separation technology is poor in biomembrane pollution resisting effect is solved. According to the preparation method, the barium titanate ceramic membrane is firstly prepared to serve as the base membrane, then the copper oxide one-dimensional nanostructure is loaded on the piezoelectric ceramic substrate, and the base membrane has a large membrane surface area and can be combined with more catalysts, so that more active sites are provided for catalytic reaction; according to the composite membrane, the hydrophilicity, the anti-pollution performance and the piezoelectric catalysis self-cleaning performance of the membrane are remarkably improved, and pollutants in water can be quickly and effectively separated, so that the flux and the anti-pollution performance of the membrane are improved.

The invention relates to the technical field of nitrate production, in particular to a potassium nitrate purification device which comprises a dissolving tank, a filtering device, a crystallization kettle, a centrifugal machine and a drying machine with a steam jacket which are sequentially connected in series through pipelines. The dissolving tank first jacket is connected with a heat source through a circulating pipeline; a liquid outlet of the centrifugal machine is sequentially connected with the cyclone separator, the ceramic membrane filter, the cationic resin column, the first temporary storage tank and the heat source, and the first heat exchanger and the second heat exchanger are sequentially installed between the first temporary storage tank and a heating medium inlet of the heat source. A steam outlet pipeline of the steam jacket is connected with a heat medium inlet of the first heat exchanger, the first heat exchanger is connected with the second temporary storage tank through a pipeline, and the second temporary storage tank is connected with the heat source through a pipeline. A pipeline of the second vacuum unit is connected with a thermal medium inlet of a second heat exchanger, and the second heat exchanger is connected with a second temporary storage tank. According to the method, the potassium nitrate purification efficiency, the product purity, the resource utilization rate and the energy economy are synergistically improved.

The invention belongs to the technical field of nanofiltration, and provides a preparation method of a recrystallized silicon carbide-silicon carbonitride ceramic membrane. The preparation method comprises the following steps: applying a polysilazane solution to a porous substrate for the first time, and then performing first pyrolysis to obtain a pyrolysis material; and applying a polysilazane solution on the pyrolysis material for the second time, and then carrying out second pyrolysis to obtain the recrystallized silicon carbide-silicon carbonitride ceramic membrane. According to the invention, a solution containing propargyl polysilazane or organic polysilazane Durazane 1500 quick-drying resin is used as a precursor to prepare the ceramic membrane, and the ceramic membrane has the advantages of high ceramic yield, excellent high-temperature stability, high retention rate and controllable microstructure, and is suitable for separation and protection application in extreme environments.

The utility model discloses an immersed rotary ceramic membrane aeration device which comprises a base, a waterproof rotary motor, a rotary ceramic membrane component and a rotary joint, an internal air channel of the rotary ceramic membrane comprises an inner ring air collection cavity, a plurality of air flow channels with the same size and structure and an outer ring aeration cavity, the inner ring air collection cavity is communicated with air outlet holes corresponding to the rotary ceramic membrane where the inner ring air collection cavity is located and is communicated with the outer ring aeration cavity through the air flow channels, and different air flow channels distribute air independently. The inner ring gas collection cavity carries out secondary distribution on inlet gas, so that gas distribution is more uniform, the gas subjected to secondary distribution passes through the gas flow channels to be uniformly aerated, and meanwhile, the outer ring aeration cavity at the tail ends of the gas flow channels communicates all the gas flow channels, so that the aeration uniformity in each gas flow channel is further ensured. The whole device can be submerged into water for use, and is relatively flexible, simple and convenient to install, maintain and apply.

The invention provides a percolation device and a preparation method of a phyllanthus emblica extract. The percolation device comprises a percolation tank, a pressing device and a plurality of separation structures, the preparation method of the emblic leafflower fruit extract comprises the following steps: firstly, coarsely crushing and soaking an emblic leafflower fruit medicinal material, then percolating the emblic leafflower fruit medicinal material in a percolating device, and collecting percolate; the preparation method comprises the following steps: extracting a percolate, adsorbing the percolate through macroporous resin, eluting with water and ethanol in sequence, combining an obtained lower column liquid and a water washing liquid, separating through a ceramic membrane and an ultrafiltration membrane in sequence to obtain a micromolecular functional sugar part, decolorizing with activated carbon, eluting with an ethanol solution, concentrating and drying to obtain a polyphenol part, and proportioning to obtain a target product. According to the technical scheme provided by the invention, active micromolecular functional sugar and polyphenol components in the phyllanthus emblica can be extracted and enriched at one time. The extract is light in color and good in solubility, so that the problems of single extracted component and inconvenience in application due to poor color and solubility in the traditional process are effectively solved.

This invention discloses an electrically controlled enrichment catalytic membrane, its preparation method, and its application in water treatment, belonging to the field of environmental organic pollution remediation technology. The electrically controlled enrichment catalytic membrane comprises a substrate layer and a copolymer coating layer with reversible electro-oxidation-reduction properties. The substrate layer is a titanium suboxide conductive ceramic membrane with a pore size of less than 1 micrometer, and the copolymer coating layer is an organic blend polymer TMA containing nitro radical functional groups. x -co-TMPMA (1‑x) Where x% represents the degree of oxidation. This invention also provides an application of the above-mentioned electrically controlled enrichment catalytic membrane in water treatment for the removal of organic pollutants. The electrically controlled enrichment catalytic membrane is used as a filter membrane in an electrochemical water treatment device. Two filter membranes are connected to the two poles of an AC power system, with the positive and negative poles reversing during a cycle. The polluted solution is controlled to flow sequentially through the two filter membranes. By adjusting the positive and negative bias parameters on the filter membranes, hydrophobic organic pollutants in the polluted solution are adsorbed and oxidized for removal. This method is energy-saving, environmentally friendly, and easy to operate.

This invention belongs to the field of membrane material preparation and modification technology, and relates to a method for pre-wetting the surface of a hydrophobic ceramic membrane. The ceramic membrane is immersed in a cyclohexane solution of perfluorooctyltrimethoxysilane for 3-4 hours. After immersion, the ceramic membrane is dried in an oven. An ethanol solution is forced to circulate through the ceramic membrane to pre-wet the separation layer. The pre-wetting process proposed in this invention is simple, highly controllable, and easily scaled up to pre-wet multi-channel hydrophobic ceramic membranes. This invention achieves coarse adjustment of the wetting degree by controlling the concentration of the ethanol-water solution, and further fine adjustment by combining the circulation time of the ethanol-water solution, thus achieving more precise control of the wetting degree and optimal improvement of the uniformity of the hydrophilic coating.

A pressure sensor and a pressure interface are disclosed. The pressure sensor comprises: a pressure interface, wherein the pressure interface comprises a cylindrical ceramic base and a ceramic diaphragm arranged at one end part of the ceramic base; the ceramic diaphragm is connected with the ceramic base, the strain gauge is connected with the ceramic diaphragm, and the ceramic base and the ceramic diaphragm are integrally manufactured. As the pressure sensor adopts the ceramic base and the ceramic diaphragm which are integrated, additional assembly and sealing are not needed, the risk of leakage is avoided, and the cost is low at the same time. Moreover, the pressure sensor is made of a ceramic material which is in contact with the pressure medium, so that the pressure sensor can be applied to corrosive pressure media and the like.

The utility model relates to the technical field of production forming equipment, and discloses ceramic membrane production forming equipment which comprises a tank body, a main stirring frame and two auxiliary stirring frames are arranged in the tank body, a PLC (programmable logic controller) is fixedly mounted on the outer circular wall surface of the tank body, and the ceramic membrane production forming equipment further comprises a scraping component arranged on the top surface of the tank body, the scraping assembly is used for scraping substances sinking to the bottom and comprises a plurality of limiting holes, the limiting holes are all formed in the top face of the tank body, moving frames are movably connected into the limiting holes in a sleeved mode, and the tank body, the auxiliary stirring frame, the fluted disc, the gear and the limiting holes are used in cooperation. The effect of scraping and stirring slurry sinking to the bottom of the tank body can be achieved, the slurry can be shoveled up when the slurry reaches the bottommost part by moving the auxiliary stirring frames and the main stirring frame up and down while rotating, and the two auxiliary stirring frames rotate oppositely, so that the stirring effect on the slurry is guaranteed, and the slurry can be fully stirred.

The utility model discloses a spraying device for flat plate ceramic membrane production, and particularly relates to the technical field of ceramic membrane spraying, the spraying device comprises an angle adjusting mechanism, an air pump is fixedly installed in the angle adjusting mechanism, the angle adjusting mechanism comprises a fixing shell, a driving motor is fixedly installed in the fixing shell, and the driving motor is connected with the air pump. And the top end of an output shaft of the driving motor is fixedly connected with a main gear, and one side of the main gear is meshed with a linkage gear. According to the spraying device for flat plate ceramic membrane production, after a ceramic membrane body is adsorbed and fixed through a suction cup, a driving motor drives a main gear and a linkage gear to rotate, so that a movable block drives the suction cup to rotate through a clamping gear and a toothed belt, and the suction cup drives the ceramic membrane body to adjust the angle; and then the ceramic membrane body is obliquely sprayed, so that the situation that excessive paint is accumulated in partial areas due to gravity during vertical spraying is avoided, and the uniform spraying effect of the spraying device for flat plate ceramic membrane production is improved.

The invention discloses a method for preparing a piezoelectric catalytic ceramic membrane at low temperature based on nano-particle modified rod-like barium titanate powder, which comprises the following steps: preparing nano-particle modified rod-like BaTiO3 powder from Bi4Ti3O12, BaCl. 8H2O, sodium oleate, deionized water and a NaOH solution, granulating, pressing and calcining to obtain a ceramic membrane product, and further carrying out electric polarization to obtain the piezoelectric catalytic ceramic membrane. The rod-like BaTiO3 powder of the nanoparticles with high surface activity not only ensures the mechanical strength of the ceramic membrane, but also effectively reduces the firing temperature. Meanwhile, the surface of the prepared ceramic membrane is of a wormlike curved surface structure, the pore size distribution is uniform, the stable separation performance is achieved, and the catalytic degradation function is achieved after electric polarization. The method is green and energy-saving, and the product can be applied to the fields of solid / gas and liquid separation, water environment restoration and the like, and has good application value.

The invention discloses a circulating water blow-off water reuse treatment system, and relates to the field of circulating cooling water treatment, the system comprises: an induced crystallization unit, which is used for carrying out primary treatment on circulating water blow-off water through an induced crystallization fluidized bed reactor to remove hardness ions in water; the ceramic membrane filtering unit is used for carrying out secondary treatment on the primarily treated water by utilizing a ceramic membrane device and removing residual hardness ions, organic matters and suspended matters in the water; and the nanofiltration membrane unit is used for performing tertiary treatment on the water by utilizing a nanofiltration membrane according to the secondary treatment result to remove salt and organic matters in the water. According to the method, induced crystallization, ceramic membrane and nanofiltration membrane technologies are combined to cooperatively treat the circulating water and the blow-down water, so that the operation mode of simplifying the process, reducing the energy consumption and prolonging the backwashing period is realized, the dosage of chemicals and the generation of sludge are reduced, and the water recovery rate is also improved, so that the hardness is removed, and the calcium resource recovery is realized.

The invention provides a ceramic membrane filter, an electroplating liquid filtering and purifying system and a purifying method thereof, and belongs to the technical field of filtering devices. The ceramic membrane filter comprises a filter shell internally provided with a plurality of ceramic membrane pipes, a connector, a water inlet pipe and a water collecting pipe. The purification system comprises a plating tank, a carbon liquid mixer and the ceramic membrane filter. The ceramic membrane filter, the purification system and the in-situ backwashing system are adopted to replace a traditional wire-wound filter element, the problems that the traditional filter element is low in precision, non-reusable, much in solid waste and high in cost are solved through high-precision filtration and membrane in-situ regeneration, manual operation is reduced to the maximum extent, the labor cost is reduced, solid waste and secondary pollution are avoided, and the method is suitable for industrial production. The advantages of high efficiency, stability, low maintenance and environmental protection are realized.

The invention provides a pitaya wine processing technology. The pitaya wine processing technology is optimized aiming at the problems that pigments are easy to degrade, the fermentation efficiency is low, and the flavor is single in a traditional technology. According to the raw material pretreatment, ultrasonic cleaning (0.05% sodium hexametaphosphate solution) is combined with metal ion control (Fe2 / Cu2 is less than or equal to 0.1 mg / L), and the juice yield is increased through composite enzymolysis (pectinase and cellulase). In the low-temperature fermentation stage, the period is shortened to 10 hours by utilizing fed-batch strain activation, and the retention rate of characteristic aroma is remarkably improved by combining pulse ultrasound and nitrogen protection (the oxygen content is less than or equal to 0.5 ppm); and through infrared monitoring and gradient cooling, accurate control of the alcoholic strength being 12% vol and the residual sugar being less than or equal to 4g / L is realized. In the aging stage, nitrogen is adopted to isolate oxygen (high-purity nitrogen is greater than or equal to 99.99%) and a KPA stabilizer, so that the degradation rate of betacyanin is less than or equal to 10%. Finally, the stability is improved through ceramic membrane filtration, cold stabilization and pasteurization, and the product is purplish red in color and luster and complex in flavor and has industrial application potential.

The invention discloses a waste sulfuric acid treatment method and device, the device comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank and a membrane separator which are connected in sequence, and the fine filtration coalescer adopts a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube as a filter material; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material; and the membrane separation system adopts one or a combined membrane of more than two of an ultrafiltration membrane, a reverse osmosis membrane and an electrodialysis membrane. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; according to the method, a physical separation means is adopted, organic polymeric oil, dissolved organic matters, dissolved salts and other impurities in the alkylated waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The invention provides a method and device for reducing coating defects of a disc-type ceramic membrane, and the method comprises the following steps: positively mounting a clamp on a spraying station, enabling the ceramic membrane to dynamically rotate, and cleaning and activating the front surface of the ceramic membrane by adopting a low-temperature plasma technology; carrying out negative pressure suction on the ceramic membrane while the ceramic membrane is dynamically rotated, and spraying a membrane preparation liquid on the front surface of the ceramic membrane by adopting ultrasonic atomization; and dynamically rotating the ceramic membrane, and performing negative pressure suction on the ceramic membrane, so that the circular arc part of the ceramic membrane is dynamically dip-coated in the membrane preparation liquid. According to the method, dynamic rotation of the ceramic membrane, negative pressure and ultrasonic spraying are cooperated, ultrasonic atomized liquid drops are sucked into a micropore structure or surface gaps when making contact with the surface of the ceramic membrane, pinholes or defects of the membrane layer are avoided, and the uniform, dense and defect-free membrane layer is formed; and non-contact with the ceramic membrane can be realized, and the coating defect caused by improper contact before the membrane layer is dried is effectively prevented.

The invention provides a method for separating and extracting bio-based succinic acid from fermentation liquor, which comprises the following steps: (1) enabling the fermentation liquor to sequentially pass through a ceramic membrane and a nanofiltration membrane, and decoloring to obtain bio-based succinic acid decolored liquor; (2) sequentially carrying out ion exchange impurity removal and concentration treatment on the bio-based succinic acid decoloring solution to obtain a bio-based succinic acid concentrated solution; and (3) carrying out multi-stage cooling crystallization on the bio-based succinic acid concentrated solution to obtain the bio-based succinic acid, the multi-stage cooling crystallization comprises first-stage crystallization, second-stage crystallization and third-stage crystallization which are carried out in sequence. Through the steps of integrated membrane filtration, decoloration, ion exchange, concentration, multi-stage crystallization and the like, thalli, proteins, pigments, inorganic ions and other impurities in fermentation liquor can be efficiently removed, so that a high-purity bio-based succinic acid product is obtained, meanwhile, the product yield is increased, and energy consumption and waste discharge are reduced.

The invention discloses a preparation method of a piezoelectric response type hybrid ceramic membrane, which is characterized in that polyvinylidene fluoride powder is used as a base material of the membrane, propylene carbonate or ethylene carbonate is used as a diluent, negative-voltage-loaded piezoelectric ceramic modified nanoparticles are doped, and a proper amount of inorganic piezoelectric nanoparticles are doped, so that the electrical property of the pressed membrane is remarkably improved; a negative charge group introduced to the surface of the membrane through surface grafting is combined, so that the relative content of beta crystal forms of the polyvinylidene fluoride membrane is increased, and finally efficient interception and excellent anti-pollution effects on humic acid are achieved.

The invention relates to a preparation method of a perigord truffle extract, a composition containing the perigord truffle extract and application of the perigord truffle extract, and the preparation method comprises the steps that perigord truffle is subjected to steam explosion and then dried, and a perigord truffle dried product is obtained; and mixing the dried perigord truffle product with water, carrying out ultrasonic extraction, filtering through a ceramic membrane, and concentrating and drying the filtrate to obtain the perigord truffle extract. According to the extraction method disclosed by the invention, the wall-breaking extraction process can be completed within a relatively short time, and the yield of active matters and the production efficiency are improved. The solvent used in the extraction process is water, no organic solvent is involved, the safety of the product is improved, the pollution to the environment is reduced, and the method is not only suitable for the fields of food, functional food and health care products, but also can be applied to anti-saccharification, anti-inflammatory and anti-oxidation products.

The invention belongs to the technical field of sodium hypochlorite production, and particularly relates to a method for producing sodium hypochlorite. A method for producing sodium hypochlorite comprises the following steps: adding a compound additive into a sodium hydroxide aqueous solution, and uniformly stirring to obtain a compound alkali-containing raw material solution; respectively introducing the composite alkali-containing raw material solution and chlorine into the micro-channel reactor through a metering pump, and controlling reaction conditions to generate a reaction solution containing sodium hypochlorite; introducing the reaction liquid into a ceramic membrane separation device, separating and removing unreacted solid impurities and by-product salts, and collecting permeate; unreacted sodium hydroxide is recycled and reused; and detecting the permeate liquid to be qualified to obtain a sodium hypochlorite finished product. According to the invention, four key links of compound additive addition, microchannel reaction, ceramic membrane separation and resin recovery are organically linked to form a systematic solution. Aiming at the core pain points of insufficient reaction, more byproducts, raw material waste, equipment corrosion and the like in the traditional process, the product purity is improved through the synergistic effect of all links.

The present invention relates to the technical field of waste lubricating oil treatment, and discloses a non-distillation regeneration apparatus and system, the non-distillation regeneration apparatus comprises: a high pollution lubricating oil pretreatment unit for removing water and other large particle impurities in waste oil; the electro-adsorption unit is used for capturing pollutants such as polar oxides and colloids in oil by adopting a porous conductive framework under the action of a direct-current electric field; the molecular filtering unit is used for carrying out cross-flow filtering by utilizing a ceramic membrane assembly and removing macromolecular non-ideal components; the deep purification unit is filled with a composite adsorbent to further purify the base oil, and the final product quality is ensured. By means of the innovative electro-adsorption refining filter and the multi-stage collaborative purification process, efficient regeneration of the waste lubricating oil under the non-distillation condition is achieved, high-quality base oil can be stably produced, and the method has the remarkable advantages of being energy-saving, environmentally friendly and high in automation degree.

The present invention relates to the technical field of preparation of food and cosmetic raw materials. Disclosed are an antioxidant repair Ganoderma lucidum extract and a preparation method therefor. The preparation method comprises: mixing crushed fruit body of Ganoderma lucidum with pure water, and heating and dynamically extracting to obtain a crude extract; standing the obtained crude extract, naturally settling, filtering a supernatant by using a screen mesh, and collecting a crude filtrate; using a disc stack centrifuge to perform secondary impurity removal on the obtained crude filtrate so as to obtain a filtrate; performing fine filtration by using a ceramic membrane having a pore diameter of 400-1200 nm, and collecting a permeate; and finally, concentrating and drying to obtain an antioxidant repair Ganoderma lucidum extract. The preparation method of the present invention is simple to operate and low in cost, and has the advantage of large scale. The finished product is high in controllability and stability, and the Ganoderma lucidum extract which is wide in application and good in effect can be provided for the industries of food, health food, and cosmetics.