666 results about "Polymeric adsorbent" patented technology

The invention discloses a method for deeply removing readily oxidizable substances in high-purity electronic-grade phosphoric acid, which deeply removes the readily oxidizable substances in the high-purity electronic-grade phosphoric acid in a mode of combining ozone oxidation and resin adsorption to obtain a high-purity electronic-grade phosphoric acid finished product with extremely low readily oxidizable substance concentration. The specific process mainly comprises the following three steps: S1, introducing ozone gas at a certain temperature to oxidize readily oxidizable substances such as phosphorous acid and hypophosphorous acid in phosphoric acid into phosphoric acid so as to reduce the concentration of the readily oxidizable substances; s2, feeding the phosphoric acid subjected to ozone oxidation into an adsorption reactor to be in contact with an adsorbent, and further removing residual readily oxidizable substances in the phosphoric acid; and S3, filtering the phosphoric acid subjected to adsorption treatment through a filter element for separation, and removing residual small particles and impurities to obtain the electronic-grade phosphoric acid with readily oxidizable substances removed. The method is simple in process, controllable in condition, convenient to operate, safe and environment-friendly, does not need to add an additional solvent, avoids introduction of new impurities, reduces secondary pollution, and is suitable for preparing high-purity electronic-grade phosphoric acid.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a method for separating metal molybdenum and rhenium from a nickel-based superalloy electrochemical dissolving solution, which comprises the following steps: providing the nickel-based superalloy electrochemical dissolving solution, and adjusting the pH value to 0-1.5; the modified MTS9570 resin is used for adsorbing the nickel-based superalloy electrochemical dissolving solution to obtain a molybdenum-absorbed solution, then a sulfuric acid solution is used for leaching, then an ammonia water solution is used for desorption, and a molybdenum desorption solution is obtained; adjusting the pH value of the molybdenum-absorbed solution to 0.5-1.5, adsorbing with modified MTA1721 resin, leaching with a sulfuric acid solution, desorbing with an ammonium sulfate and ammonia water mixed solution, and desorbing with an ammonia water solution to obtain a second-stage rhenium desorption solution; and the molybdenum desorption solution and the second-stage rhenium desorption solution are subjected to evaporation concentration, crystallization, recrystallization and high-temperature hydrogen reduction respectively, and metal molybdenum and rhenium are obtained. According to the method for separating rhenium and molybdenum from the nickel-based high-temperature alloy electrochemical dissolving solution, the rhenium and molybdenum recovery rate and rhenium purity are improved, and the process is simple, convenient and practical.

The invention discloses a polyester fabric printing and dyeing water-saving automatic treatment system based on digital monitoring. According to the system, a printing and dyeing execution device, a filtering regeneration device, a data acquisition device and a system control device are integrated through modular design, temperature, pressure, flow velocity and resin saturation data in the printing and dyeing process are obtained in real time through a sensor network, and a dynamic correlation function is constructed based on the system control device to generate an accurate regulation and control instruction. Uniformity control of wastewater circulation, stability optimization of resin adsorption efficiency and remarkable improvement of the water resource utilization rate are achieved, and the problems that in a traditional process, the manual dependence degree is high, and resource waste is serious are solved.

The invention discloses a preparation method of an ulinastatin crude product, which comprises the following steps: a, adsorbing urine of healthy adults by using macroporous adsorption resin, and then desorbing by using a salt solution to obtain an eluent; b, carrying out ultrafiltration concentration on the obtained eluent to obtain a first concentrated solution; c, purifying and eluting the concentrated solution obtained in the step b by using a lectin affinity chromatography column, and collecting a liquid phase; d, performing ultrafiltration concentration on the obtained liquid phase to obtain a second concentrated solution; and e, salting out the second concentrated solution, and filtering to obtain the ulinastatin crude product. The ulinastatin prepared by the preparation method disclosed by the invention is high in specific activity and long in shelf life.

The invention relates to the technical field of industrial waste treatment and silver nitrate preparation, in particular to a method for preparing high-purity silver nitrate from silver-containing waste. The method comprises the following steps: reducing the silver-containing waste by adopting a liquid phase reduction method, pickling to remove impurities, putting the silver-containing waste into a medium-frequency induction furnace, performing high-temperature smelting and ingot casting, performing electrolytic purification to obtain crude silver powder, and performing smelting and ingot casting on the crude silver powder to obtain a raw material national standard No.1 silver ingot for preparing silver nitrate; the method comprises the following steps: putting a national standard No.1 silver ingot and a nitric acid solution into a reaction kettle according to a certain proportion for dissolving silver, carrying out adsorption and impurity removal on a dissolved solution through ion exchange resin, carrying out adsorption and impurity removal on a primary filtrate through chelating type adsorption resin, and carrying out centrifugation, evaporative crystallization, drying and other processes on a secondary filtrate to obtain the high-purity silver nitrate. The method is easy to implement, the recovery rate of the silver-containing waste materials is high, the high-purity silver nitrate product can reach the premium-grade pure standard, and the technological process is environmentally friendly.

The invention relates to the technical field of heavy metal recovery, in particular to a method for recovering heavy metal from metal waste. Comprising the following steps: preparing silicon-tungsten composite acid salt; preparing heteropolyacid powder; preparing a resin heteropolyacid composite material; heavy metals are recovered from metal wastes by a resin adsorption method. The silicon-tungsten composite acid salt is prepared under mild conditions through reaction of sodium metasilicate, sodium tungstate and potassium chloride, the operation is simple, the conditions are easy to control, the silicon-tungsten composite acid salt has rich active sites and a large specific surface area, the surface of the silicon-tungsten composite acid salt carries negative charges, and the surface of the silicon-tungsten composite acid salt is not prone to damage. Compared with a traditional chemical precipitation method, the method for extracting the heavy metal by using the silicon-tungsten composite acid salt does not need to add a large number of chemical reagents, and secondary pollution is reduced.

The present application relates to wastewater treatment technical field, specifically to a kind of ammonia nitrogen wastewater treatment method, the composite modified zeolite material in the present application has excellent physical adsorption capacity to ammonia nitrogen by virtue of its unique pore structure and surface properties, ammonia nitrogen molecules in wastewater can be quickly captured, then through the synergistic effect of composite photocatalyst under light and ultrasonic, strong oxidizing free radicals are generated, ammonia nitrogen molecules not completely adsorbed by zeolite material are deeply degraded, through the synergistic effect of adsorption and photocatalysis, the removal efficiency of ammonia nitrogen is significantly improved;After adsorption and photocatalytic treatment, the ammonia nitrogen concentration in wastewater has been greatly reduced, and resin adsorption treatment is used as a subsequent step, which can selectively adsorb residual trace amounts of ammonia nitrogen and other impurities, thereby realizing deep purification of wastewater and ensuring that the effluent quality meets or exceeds relevant discharge standards.

The invention discloses a method for recovering valuable metals from a waste hydrogenation catalyst, and relates to the technical field of waste catalyst recovery, and the method comprises the following steps: carrying out oxidizing roasting and oxygen pressure alkaline leaching on the waste hydrogenation catalyst to obtain an alkaline leaching solution and alkaline leaching residues; aluminum, vanadium and molybdenum are recycled from the alkaline leaching solution, wherein carbon dioxide is introduced into the alkaline leaching solution for aluminum precipitation; ammonium sulfate and magnesium sulfate are added into the filtrate subjected to aluminum precipitation to remove phosphorus, silicon and arsenic, molybdenum and vanadium are adsorbed through resin, and vanadium precipitation and molybdenum precipitation are carried out; and aluminum and nickel are recycled from alkaline leaching residues, specifically, aluminum is precipitated through oxygen pressure acid leaching, then alkali is added into filtrate to further recycle aluminum, and then sodium carbonate is added for nickel precipitation. By means of the method, molybdenum, vanadium, nickel, aluminum and other elements in the waste catalyst can be effectively recycled, the recycling rate is high, the molybdenum recycling rate can reach 97%, the vanadium recycling rate can reach 95%, the nickel recycling rate can reach 92%, comprehensive utilization of the waste catalyst is achieved, and good social value and economic value are achieved.

The invention discloses an acid recovery process based on nanofiltration-reverse osmosis, and belongs to the technical field of wastewater treatment, the acid recovery process comprises the following steps: step 1, adsorbing aluminum ions in chemical polishing waste liquid through extraction resin, evaporating and concentrating effluent, and using the effluent as recycled chemical polishing tank acid liquid; step 2, desorbing the adsorbed extraction resin by using distilled water, separating aluminum ions from the obtained desorption liquid through diffusion dialysis, and separating the recovered acid liquid through nanofiltration; step 3, concentrating the nanofiltration thin liquid through reverse osmosis to obtain concentrated acid liquid which is used as recycled sulfuric acid desorption liquid; and 4, adding alkali into the diffusion dialysis residual liquid, the nanofiltration concentrated liquid and the reverse osmosis thin liquid for neutralization to prepare the aluminum-containing flocculating agent. According to the method, adsorption, diffusion dialysis, nanofiltration and reverse osmosis processes are combined, and an amino-containing imidazolium salt modified polyamide nanofiltration membrane and a phosphonic acid-sulfonic acid bifunctional group-containing reverse osmosis membrane are adopted, so that efficient separation and recovery of acid and aluminum ions in the chemical waste liquid are realized, and economic benefits are increased while the cost is reduced.

The utility model provides a deep defluorination device for aluminum resin, which is characterized by comprising a first-stage defluorination device, a second-stage defluorination device, a third-stage defluorination device and a solution callback device, the primary defluorination device comprises a first dosing tank, a first regulating tank, a first flocculation tank and a first sedimentation tank; the secondary defluorination device comprises a second dosing tank, a second regulating tank, a second flocculation tank and a second sedimentation tank; the three-stage defluorination device comprises a resin adsorption column; and the solution callback device comprises a third regulating tank, a third flocculation tank and a third sedimentation tank. According to the utility model, the fluorine content in the wastewater is stably and deeply removed, the increasingly strict discharge standard is met, the resource utilization efficiency is obviously improved, the overall cost of wastewater treatment is reduced, and an efficient, economical and environment-friendly new scheme is provided for the field of industrial wastewater treatment.

The invention relates to the technical field of wastewater treatment, in particular to an ammonia-nitrogen wastewater treatment method.A composite modified zeolite material has excellent physical adsorption capacity on ammonia nitrogen by means of the unique pore structure and surface property of the composite modified zeolite material, ammonia nitrogen molecules in wastewater can be rapidly captured, and the ammonia nitrogen wastewater treatment effect is improved. Then, under the synergistic effect of illumination and ultrasonic waves, free radicals with strong oxidizing property are generated through the composite photocatalyst, ammonia nitrogen molecules which are not completely adsorbed by the zeolite material are deeply degraded, and the removal efficiency of ammonia nitrogen is remarkably improved through the synergistic effect of adsorption and photocatalysis; after adsorption and photocatalysis treatment, the concentration of ammonia nitrogen in the wastewater is greatly reduced, then resin adsorption treatment is adopted as a subsequent step, and residual trace ammonia nitrogen and other impurities can be selectively adsorbed, so that deep purification of the wastewater is realized, and the effluent quality is ensured to reach or be superior to related emission standards.

The invention discloses a multiphase extraction and tail gas and wastewater treatment integrated device and a control method thereof. Comprising at least one set of small multiphase extraction unit connected with an extraction well, an agent box storing a solubilizing agent and an oxidizing agent, a resin adsorption tower, an oil-water separator, a photocatalytic reactor, an oil storage tank, a heating system used for heating the agent box and the oil-water separator and providing high-temperature steam for the resin adsorption tower, and a controller, wherein the medicament box is respectively connected with the extraction well and the photocatalytic reactor, the multiphase extraction unit comprises a gas-liquid separator, a water ring vacuum pump and a jet pump, the extracted gas-liquid mixture is subjected to gas-liquid separation through the gas-liquid separator, waste gas is conveyed to the resin adsorption tower through the water ring vacuum pump, and the resin adsorption tower is used for adsorbing the waste gas. Waste liquid and the extracted oil-water mixture are conveyed to the oil-water separator through the jet pump, waste water is conveyed to the photocatalytic reactor, and waste oil is conveyed to the oil storage tank. According to the invention, miniaturization is realized, and meanwhile, the stability and high efficiency of removal efficiency are effectively guaranteed.

According to the organic wastewater energy-saving treatment system provided by the invention, organic matters in organic wastewater can be greatly reduced through oil separation treatment of the reservoir and filtration and coalescence separation treatment of the filtration coalescence device, so that the purpose of recovering the organic matters is achieved; through multi-effect evaporation of the I-effect falling film evaporator, the II-effect falling film evaporator and the forced circulation evaporator, generated steam is recycled through the MVR compressor, cyclic utilization of secondary steam energy is achieved, and energy consumption is reduced; and the wastewater can be recycled through a multi-effect evaporation and resin adsorption treatment mode, and the recovery rate reaches 96%. The steam consumption for wastewater treatment can be reduced by 0.90 t / m < 3 >.

The invention belongs to the technical field of waste acid recovery and utilization, and provides a waste sulfuric acid recovery process based on isopropyl bromide recovery, the recovery process comprises the following specific steps: step 1, mixing sulfuric acid waste liquid, activated carbon and hydrogen peroxide, heating and stirring to obtain pretreated sulfuric acid waste liquid; step 2, adding an organic solvent into the pretreated sulfuric acid waste liquid for extraction; and step 3, carrying out resin adsorption on the extracted sulfuric acid waste liquid, and then carrying out reduced pressure distillation and concentration to obtain concentrated sulfuric acid. According to the sulfuric acid waste liquid recovery process provided by the invention, the sulfuric acid waste liquid can be well recovered, the environmental pollution is further reduced, and the resource utilization rate is improved.

The present invention relates to the technical field of antibiotic production, and in particular to a dalbavancin intermediate A40926 and a separation and purification method thereof, comprising the following steps: S1, filtering a fermentation broth containing the dalbavancin intermediate A40926 to obtain a collected liquid; S2, adsorbing the collected liquid through a macroporous adsorption resin, eluting with ethanol, and collecting an eluate a having an A40926 unit greater than 100 mg / L; S3, ultrafiltrating and concentrating the eluate a to obtain a concentrated liquid having an A40926 unit of 15,000 to 16,000 mg / L; S4, subjecting the concentrated liquid to a chromatography exchange resin, top-washing with pure water, and gradient eluting with an ammonium acetate-ethanol solution, to collect an eluate b having an A40926 purity greater than 95%; S5, adjusting the pH of the eluate b to 8.0±0.2, adding acetone, adjusting the feed liquid temperature to 2 to 8°C, stirring for 6 to 7 hours, performing crystallization, and filtering and drying to obtain the dalbavancin intermediate A40926.

The utility model relates to the field of hydrometallurgy, in particular to a nickel sulfate solution deoiling device. Comprising a standing tank connected with a production process outlet end, one end of an oil removal device is connected with the standing tank, the other end of the oil removal device is connected with a resin adsorption column, the resin adsorption column is connected with a regeneration tank, and the regeneration tank is connected with a solution storage tank. According to the oil removal device arranged in the device, oil can be treated step by step according to different existing forms and physical properties of oil in nickel sulfate through internal fiber cotton filtration, resin adsorption and filter screen filtration, and compared with the prior art, the oil removal effect is better; the device is provided with the oil-water separator and the bag filter, so that the oil removal effect can be further improved, and impurities in the nickel sulfate solution can be separated.

The invention discloses a method for extracting ginsenoside based on a supercritical extraction method, and relates to the technical field of traditional Chinese medicine extraction. The ginsenoside is extracted through a supercritical extraction method, the extraction process is convenient and efficient, the purity of the ginsenoside is high, organic solvent residues are avoided, the method is green and environmentally friendly, carbon dioxide can be recycled, and the operation cost is low; through degreasing pretreatment, fat-soluble components in ginseng powder are removed, the extraction purity of saponin is increased, the solid loading capacity of supercritical extraction is reduced, the mass transfer resistance is reduced, and the extraction efficiency is improved; the ginsenoside is purified in a post-treatment mode of resin adsorption and elution, polar impurities can be further removed, glutamine is adopted for surface functionalization of the resin, acylamino and carboxyl are introduced to the surface of the resin and can form hydrogen bonds with phenolic hydroxyl groups in the ginsenoside, functional adsorption is achieved, meanwhile, impurities are removed, and the content of the ginsenoside is increased. Reaction conditions are simple and mild, and adsorption efficiency is high.

The invention provides a method for recycling battery-grade manganese sulfate from manganese-containing feed liquid. The method comprises the following steps: (1) carrying out resin adsorption on a manganese-containing feed liquid to obtain a nickel-cobalt adsorbate and an adsorbed feed liquid; (2) sequentially carrying out extraction treatment and reverse extraction treatment on the adsorbed feed liquid to obtain a solution containing manganese sulfate and an organic phase after reverse extraction; (3) carrying out evaporative crystallization on the solution containing manganese sulfate to obtain battery-grade manganese sulfate; positive ions in the manganese-containing feed liquid comprise manganese ions, nickel ions, cobalt ions, calcium ions and magnesium ions, and negative ions in the manganese-containing feed liquid comprise sulfate ions; an extraction agent adopted in the extraction treatment process comprises an HBL116 extraction agent. According to the method disclosed by the invention, metal oxidation hydrolysis cannot be caused to generate a third phase, the extraction process is stable, enrichment of a high-concentration manganese sulfate solution is realized, high-purity manganese sulfate crystals with qualified impurities are obtained, and efficient recovery of manganese in a high-calcium-magnesium feed liquid system can be realized; and a complicated recovery process is not needed, so that the cost is lower.

The invention discloses a parameter differential separation process, and relates to the technical field of separation. The defects in the prior art are overcome. The method specifically comprises the following steps: carrying out a generalized separation process by using a parameter differential moving bed, and operating the generalized separation process to eliminate a displacement zone in chromatographic sequential operation; the method comprises the following steps: contacting a mobile-phase liquid feeding solution with solid-phase resin / adsorbent filler through a novel mass transfer equilibrium contact method, and starting to obtain a characteristic separation curve; the multiple components contained in the mobile phase liquid feed solution are separated by a new mass transfer equilibrium contact process such that at least one component contained in the mobile phase liquid feed solution can be adsorbed onto the resin / adsorbent. The method realizes final separation of a large-scale production separation system, improves the maximum mass transfer efficiency, can also be used for a binary separation system in the separation process of glucose and fructose, reduces the consumption of washing liquid, and reduces the final power consumption.

The invention discloses a resin adsorption waste gas treatment evaluation optimization method based on multi-source data fusion, and particularly relates to the field of waste gas treatment.The method comprises the steps of S1, collection area determination, S2, waste gas monitoring sensor deployment, S3, resin data collection, S4, resin data preprocessing, S5, resin treatment effect analysis, S6, numerical treatment effect judgment and S7, real-time optimization. In order to solve the problems that a traditional waste gas treatment monitoring mode is single, evaluation is not accurate, and dynamic optimization cannot be achieved, a first-level collection area and a second-level collection area are divided, multiple sensors are deployed in a targeted mode to collect multi-source data, the multi-source data are preprocessed, and the multi-source data are analyzed and analyzed. The preprocessed data are input into a mathematical model to evaluate the waste gas treatment effect, and when an evaluation index exceeds a threshold value, the system performs early warning and automatically adjusts operation parameters of the adsorption tower, so that multi-source data fusion monitoring, accurate evaluation and intelligent optimization are realized, the treatment cost is reduced, and the treatment effect is improved.

The invention discloses a preparation method of a peony seed shell flavone extract, which comprises the following steps: extracting peony seed shell flavone (ZKHT) by adopting enzymolysis-ultrasonic extraction, and separating and purifying by using a resin adsorption combined membrane separation technology, so that various flavonoid active compounds such as kaempferol, luteolin and apigenin with high content in peony seed shells can be effectively extracted at the same time; the method provided by the invention provides technical support for reutilization of the peony seed shell waste, and realizes efficient and comprehensive utilization of the peony seeds and by-products thereof.

The invention relates to a method for efficiently extracting high-specification battery-grade lithium carbonate, and belongs to the technical field of lithium carbonate preparation. The method comprises the following steps: pretreatment: mixing a lithium-containing solution raw material with liquid caustic soda; extraction: fully mixing the lithium-containing solution with a no-load extraction agent, and performing phase splitting; reverse extraction: conveying sulfuric acid with a certain concentration and a lithium-containing load oil phase through a centrifugal pump respectively, fully mixing in an extraction tank, and splitting phases; calcium and magnesium are removed from the strip liquor, specifically, the strip liquor is adsorbed through resin, calcium and magnesium in the strip liquor are adsorbed and removed, and the resin is recycled through acid-base regeneration and water washing after adsorption saturation; wastewater treatment: firstly recycling an organic extracting agent in a non-dissolved state from the water-phase raffinate in the extraction procedure through an oil separator, and then treating and regenerating through a macroporous resin adsorption tank; precipitating lithium: placing the prepared sodium carbonate solution in a beaker, stirring and heating, slowly dropwise adding the lithium sulfate solution, continuously reacting, and filtering; and washing and drying: filtering, and drying the lithium carbonate obtained after filtering.

The invention relates to the field of sewage treatment, in particular to a treatment method and system for a sludge hydrothermal carbonization solution. The treatment method provided by the invention comprises the following steps: adjusting the pH value of the sludge hydrothermal carbonization solution to 5-6 to obtain an initially adjusted carbonization solution; carrying out hydrolytic acidification reaction on the primarily adjusted carbonized solution to obtain a hydrolytic acidification carbonized solution; carrying out methanogenesis reaction on the hydrolytic acidification carbonization solution to obtain an anaerobic digestion carbonization solution; performing multi-stage anaerobic-aerobic denitrification treatment on the anaerobic digestion carbonization solution to obtain a denitrified carbonization solution; dephosphorizing the denitrified carbonized solution to obtain a dephosphorized carbonized solution; and carrying out resin adsorption on the dephosphorized carbonized liquid, and then discharging the dephosphorized carbonized liquid. The treatment method provided by the invention can effectively remove organic matters and nitrogen and phosphorus compounds contained in the sludge hydrothermal carbonization liquid. The concentrations of various pollutants in the discharged water meet the water quality standard of sewage discharged into urban sewers, and the problem of secondary pollution to the environment caused by wastewater generated by a sludge hydrothermal carbonization technology is solved.

The invention relates to the technical field of non-ferrous metal hydrometallurgy, in particular to a method for separating molybdenum and rhenium from molybdenum smelting waste acid by using resin, which comprises the following steps: adding a phosphorus source into the molybdenum smelting waste acid, and then adjusting the acidity to an acid environment in which the hydrogen ion concentration is greater than or equal to 1mol / L; molybdenum and rhenium in the molybdenum smelting waste acid with the acidity adjusted are separated through weak-base anion exchange resin, and a rhenium product with the lower molybdenum impurity content is obtained. According to the method, the phosphorus source is added into the molybdenum smelting waste acid, so that phosphate ions are hydrolyzed from the phosphorus source, molybdenum can be effectively prevented from being adsorbed by the alkalescent anion exchange resin, the selectivity of the anion exchange resin to rhenium is greatly improved, and the rhenium recovery rate and the molybdenum-rhenium separation effect are improved; the problems that in the prior art, ion exchange resin is difficult to adapt to molybdenum-rhenium separation under the high molybdenum concentration, the rhenium recovery rate is low, the rhenium-molybdenum separation effect is poor, and a high-molybdenum-concentration solution cannot be treated are solved.

The invention relates to a comprehensive treatment method for extracting scattered metal and degrading dioxin in cooperation with slag and waste incineration fly ash. The comprehensive treatment method comprises the following steps: mixing germanium-containing slag, iron-ore slag containing gallium and niobium and waste incineration fly ash to obtain a mixture, and adding a first reagent into the mixture to obtain a composite mixture; the first reagent is at least one of silicon dioxide, borax, calcium oxide, aluminum oxide and coke powder; reacting the composite mixture at a first temperature and a first vacuum degree for a first time to obtain a germanium-rich product, decomposing dioxin in the waste incineration fly ash, reacting at a second temperature and a second vacuum degree for a second time, and cooling to obtain an intermediate product of which the upper layer is residues and the lower layer is a gallium-rich ferroniobium eutectic melt; and the gallium-rich ferroniobium eutectic melt is dissolved in acid, then gallium and niobium are obtained through resin adsorption separation, and recovery of scattered metal is achieved. The problems that slag is wasted, dioxin in waste incineration fly ash is difficult to treat, and secondary pollution is easily caused are solved.

The invention provides a preparation method and application of deodorized beet red, and the preparation method comprises the following steps: peeling and crushing red beet, centrifugally separating, adding sugar, adding cultured bacterial liquid for fermentation to obtain fermented beet slurry, adsorbing the fermented beet slurry with macroporous adsorption resin to remove impurities, resolving with an ethanol solution, concentrating with a nanofiltration membrane, and sterilizing to obtain the deodorized beet red. The deodorized beet red concentrated solution is obtained. The preparation process of the deodorized beet red is simple, the beet red is high in stability, free of unpleasant odor and suitable for large-scale production, technical support is provided for industrial application of natural pigments, and the prepared deodorized beet red can be applied to the fields of food, medicine and cosmetics.

The invention discloses a method for extracting ecdysterone from cyanotis arachnoidea by using a deep-eutectic solvent, and belongs to the technical field of ecdysterone extraction. The method comprises the following steps: mixing a deep-eutectic solvent which takes choline chloride and a hydrogen bond donor material as raw materials with water, extracting ecdysterone in roots and stems of Cyanotis arachnoidea to obtain an ecdysterone crude extract, precipitating the ecdysterone crude extract by adding water, filtering, and adsorbing ecdysterone by using macroporous resin. Adding water for elution to obtain a deep-eutectic solvent-water mixed solution, and recovering under reduced pressure to obtain an extraction solvent for cyclic utilization; and eluting by using alcohol with different concentrations to obtain an ecdysterone crude extract, and purifying the crude extract to obtain high-purity ecdysterone. Compared with a conventional extraction method, the process method adopted by the invention has the advantages that the process is simple, efficient, green and environment-friendly, the used eutectic solvent can be recycled, the loss caused by heating volatilization in the extraction process is avoided, the ecdysterone extracted by the method is pure white, the content of ecdysterone can reach 90% or above after simple purification, and the method is suitable for industrial production. After re-purification, the purity of ecdysterone detected by high performance liquid chromatography is up to 98% or above.

The invention discloses an electroplating wastewater recovery system and method, and belongs to the field of electroplating wastewater treatment.The electroplating wastewater recovery system comprises a resin adsorption device, a membrane concentration device, an electrolytic tank, a mixing tank, an immersed ultrafiltration membrane tank, electrodialysis equipment, reverse osmosis equipment and bipolar membrane electrodialysis equipment; a concentrated solution outlet of the membrane concentration device is communicated with the electrolytic tank, a dialysate outlet of the resin adsorption device, a permeate outlet of the membrane concentration device and a residual liquid outlet of the electrolytic tank are all communicated with the mixing tank, a water outlet of the mixing tank is communicated with the immersed ultrafiltration membrane tank, and a filtrate outlet of the immersed ultrafiltration membrane tank is communicated with the electrodialysis equipment. A desalted liquid outlet of the electrodialysis equipment is communicated with the reverse osmosis equipment, a concentrated liquid outlet of the electrodialysis equipment is communicated with the bipolar membrane electrodialysis equipment, and an alkali liquid outlet of the bipolar membrane electrodialysis equipment is communicated with the immersed ultrafiltration membrane pool. According to the method, not only are valuable metals obtained, but also acid liquor and alkali liquor are obtained.

The invention discloses a mulberry leaf extract for reducing body weight based on blood sugar regulation and a preparation method thereof, and belongs to the technical field of natural product extraction. The mulberry leaf extract is mulberry leaf DNJ, and the extraction and preparation steps of the mulberry leaf extract comprise pretreatment, composite enzymatic hydrolysis, ultrafiltration purification, resin adsorption and freeze-drying molding. By optimizing enzymolysis conditions and a separation and purification process, the extraction rate (gt; and therefore, a foundation is laid for industrial production. DNJ reduces blood sugar and body weight by promoting secretion of GLP-1, when DNJ is combined with GLP-1RA for use, a remarkable synergistic effect is shown, and the effects of reducing blood sugar and losing weight are further enhanced. The invention provides a natural and safe blood glucose reducing and weight losing active component and a preparation method thereof, provides a novel solution for treating diabetes and obesity, and has important social and economic values.

The invention belongs to the technical field of macroporous resin adsorption, and particularly relates to macroporous resin adsorption separation equipment which comprises a base, supporting frames, a thermal control type adsorption mechanism and a speed detection type communication detection mechanism, the supporting frames are symmetrically arranged on the upper wall of the base, and the thermal control type adsorption mechanism is arranged at the ends, away from the base, of the supporting frames; the speed detection type communication measuring mechanism is arranged on the outer side of the thermal control type adsorption mechanism, and the thermal control type adsorption mechanism comprises a gas transmission mechanism, a water cooling mechanism, a filtering mechanism and a temperature control mechanism. According to the separation equipment for macroporous resin adsorption, the adsorption operation environment temperature of macroporous resin can be regulated and controlled, and it is guaranteed that the macroporous resin is always at the optimal adsorption temperature.