1688 results about "Separation process" patented technology

The invention provides a chemical sewage advanced treatment system and method based on multistage membrane separation, and relates to the technical field of chemical sewage treatment.The method comprises the steps that pollution load data under preset membrane flux is collected, and the cascade reflux amount in the current membrane separation process is determined through the pollution load data and a real-time pressure index during membrane separation filtration; according to the separation interference deviation, the steady-state filtering period of the membrane separation filtering grade in the constant flux change is predicted, the steady-state filtering period is synchronously screened, and the full-flow separation limit of the multistage membrane separation unit in different pollution loads is obtained; and generating a separation regulation and control index when the equivalent flux generates peak offset according to the cascade reflux quantity and the full-flow separation limit, and performing starting point triggering on the treatment flow of the multistage membrane separation sewage and dirt. Under the dynamic working condition of operation of the multistage membrane separation system, balance adjustment can be carried out on the advanced treatment process trigger of the chemical sewage, so that the standard-reaching rate of membrane separation chemical sewage advanced treatment is increased.

The invention discloses a preparation method and application of a pH-responsive controllable oil-water separation material, polyurethane sponge is used as a substrate, polypyrrole is attached to the sponge substrate through an in-situ polymerization method, a pH-responsive polymer is introduced into the sponge substrate through a soaking method, and finally the pH-responsive controllable oil-water separation material is obtained. The controllability of the material in the oil-water separation process is reflected as follows: due to the introduction of the pH responsive polymer, the surface of the material has pH responsiveness, the surface of the material has different wettability by adjusting the pH value, different types of oil-water mixtures can be controllably separated in a targeted manner, and the adsorption and desorption of oil products can be realized. Due to the introduction of polypyrrole, the material has good photo-thermal conversion capacity, the viscosity of crude oil can be effectively reduced, and the absorption rate of the crude oil can be improved. The material with pH responsiveness has wide application prospects in the fields of oil-water separation, oil product adsorption and desorption and crude oil absorption.

The invention relates to the technical field of nano magnetic bead preparation, and discloses a magnetic bead continuous separation device. The magnetic bead continuous separation device comprises a magnetic bead separator, a magnetic field generating device and a driving device, the driving device is used for driving the magnetic field generating device to be close to or away from the side wall of the magnetic bead separator, the magnetic bead separator is hollow, one end of the magnetic bead separator is provided with a first liquid inlet and a second liquid inlet, and the other end of the magnetic bead separator is provided with a first liquid outlet and a second liquid outlet. According to the invention, a plurality of separation processes can be integrated in the same structure, so that the system configuration is simplified, and the requirements of automation and large-scale continuous treatment in the magnetic bead purification process are effectively met.

The utility model belongs to the technical field of recovery of coking chemical products in the metallurgical coking industry, and particularly relates to a crude benzene oil-water separation integrated device which is characterized by comprising an oil-water separation area, an oil phase collection area and a water phase collection area, and a partition plate is annular and defines the oil-water separation area in the middle and the oil phase collection area surrounding the oil-water separation area; a crude benzene diversion weir is arranged between the periphery of the top of the partition plate and the oil phase collecting region; a flow guide expansion head and a flow guide baffle are arranged at the bottom of the inlet liquid guide pipe, and a dispersion flow channel in the transverse circumferential direction is formed between the flow guide expansion head and the flow guide baffle; a drainage pipe at the bottom of the oil-water separation area is provided with a diversion collector for transversely draining and collecting separated water from the periphery. The crude benzene oil-water separation device has the beneficial effects that the existing crude benzene oil-water separation process is improved, oil-water separation and reflux are integrated, and the equipment integration device saves the occupied area, simplifies the process flow and is convenient to operate and maintain.

The invention relates to an air pre-impurity-removal control method and system for enrichment and separation of Kr, and relates to the technical field of gas separation and purification, and the air pre-impurity-removal control method comprises the following steps: removing impurity components in air through an impurity removal device to obtain air subjected to impurity removal treatment; carrying out multi-stage enrichment and separation treatment on the air subjected to impurity removal treatment to obtain enriched Kr gas; and introducing the enriched Kr gas into a chromatographic separation device, and separating krypton from other inert gases to obtain a target krypton component. The problems that in the traditional Kr enrichment and separation process, due to the fact that air impurities are prone to icing, the device is blocked, the multi-stage separation parameter adaptability is poor, and the enrichment efficiency is low are solved, and through pre-impurity removal of intelligent parameter configuration and multi-stage enrichment of gradient temperature control, the Kr separation stability, the enrichment efficiency and the target component purity are improved.

The invention relates to the technical field of oil-water separation, and discloses oil-water separation equipment which comprises a pool body, an annular discharging groove and a water outlet are formed in the inner side wall of the pool body, a separation baffle is installed on the inner wall of the annular discharging groove through an extending frame, and an oil collecting channel is further installed on the inner wall of the separation baffle. The lower end of the oil collecting channel is communicated with an oil outlet pipe; the tank body is provided with a feeding cylinder and a sludge discharging pipe, a pushing scraping plate is mounted on the outer side wall of the feeding cylinder through a rotating frame, the lower end of the feeding cylinder is communicated with a feeding pipe, and a feeding port is formed in the outer side wall of the feeding cylinder; the invention further discloses an oil-water separation process which comprises the following steps: S1, sewage introduction and pretreatment; s2, primary separation; s3, fine separation; s4, collecting and discharging oil liquid; and S5, water discharging: a multi-stage separation structure is adopted, the separation efficiency is greatly improved through multi-stage cooperation, a good separation effect on oil drops with small particle sizes is achieved, and the environment-friendly discharge requirement is met.

The invention provides a metal material recycling device and a method for leaching fluorine beryllium thallium and lithium rubidium cesium in lithium slag. Relates to the field of metal material recycling, and comprises a leaching tank placed on the ground through four supporting frames, the top of the leaching tank is fixedly provided with a top cover, and the bottom of the leaching tank is fixedly provided with a bottom cover. According to the metal material recycling device and the leaching method for fluorine beryllium thallium and lithium rubidium cesium in the lithium slag, the ultrasonic generator is arranged to supply energy to the first ultrasonic transducer and the second ultrasonic transducer to generate ultrasonic waves, the ultrasonic waves generate microjet flow to impact the surface of minerals, acid liquor permeation and ion diffusion are accelerated, the leaching time is shortened, and the efficiency is improved; the surface of the lithium slag is not prone to passivation, the leaching rate of target metal ions is increased, the leaching liquid is pumped out through the water suction pump, manual contact with the leaching liquid in the next solid-liquid separation procedure is facilitated, dilute sulfuric acid is supplemented through the acid supplementing pipe, then the lithium slag is placed through the funnel, and the consistency and controllability of starting of the leaching reaction are guaranteed.

The invention provides a catalyst recovery control system and method based on multi-stage centrifugal separation, and relates to the technical field of catalyst separation, the system comprises: a device building module for building a multi-stage centrifugal separation device; the separation and analysis module is used for determining M catalyst centrifugal process parameters; the separation treatment module is used for performing preliminary separation treatment on the target mixture and acquiring M catalyst state parameters at the same time; and the recovery control module is used for carrying out separation effect calculation and multi-stage dynamic adjustment on the M catalyst centrifugal process parameters according to the catalyst state parameters, determining multi-stage centrifugal separation strategy parameters and carrying out catalyst recovery control on the target mixture. The technical problem that the catalyst recovery efficiency is low due to the fact that the catalyst separation efficiency is insufficient and the catalyst is wasted in the prior art can be solved, the optimization of the catalyst state in the whole separation process is ensured through multi-stage centrifugal separation, and the catalyst recovery efficiency is improved.

The invention relates to a coal gangue all-component resource utilization method based on a grading and grading process, and belongs to the technical field of solid waste resource utilization. Aiming at the technical bottlenecks of high component mixing degree, low resource utilization rate, low product added value and the like in the traditional coal gangue treatment process, the method innovatively constructs an integrated process system of three-stage crushing and screening coordinated multi-path resource conversion. The specific implementation process comprises the steps that firstly, size grading is conducted on coal gangue through a combined crushing system of a jaw crusher, a hammer crusher and an impact crusher, and accurate separation of coarse coal, stone and soil is achieved through a three-stage vibration screening system according to the selective crushing characteristics of different minerals in the aspects of density, hardness and mechanical properties. Wherein the materials with the size fraction larger than 25 mm are subjected to impact type crushing to strengthen quartz component decomposition and separation, the materials with the size fraction ranging from 25 mm to 6 mm are subjected to multi-section hammer type crushing to promote kaolin enrichment, and finally coarse coal, stone and soil products are formed.

The invention relates to the technical field of air flotation oil removal, and discloses a rotational flow air flotation oil removal device and an oil-water separation process. The rotational flow air flotation oil removal device comprises a tank body; the cyclone assembly is arranged in the tank body and comprises a cylinder body fixedly mounted in the tank body; the gas distribution assembly is coaxially arranged at the bottom of the mixing cavity; the gas distribution assembly comprises a gas distribution disc rotationally arranged at the bottom of the mixing cavity, a gas inlet pipe connected with the center of the bottom of the gas distribution disc in a penetrating mode, a plurality of sets of cylindrical gas holes formed in the radial direction of the gas distribution disc in an array mode, a plurality of sets of spiral cover plates covering the gas distribution disc and conical gas holes formed in the spiral cover plates and corresponding to the cylindrical gas holes. According to the rotational flow air flotation oil removal device, the air distribution disc is driven to rotate intermittently, so that the cylindrical air holes correspond to the conical air holes of the spiral cover plate alternately, tiny bubbles and large bubbles matched with oil drops with different particle sizes are generated, and effective capture of tiny oil drops and rapid separation of medium and large oil drops are achieved.

The invention relates to a waste liquid treatment device for automatically separating radionuclides. The waste liquid treatment device comprises a first waste liquid collection passage and a second waste liquid collection passage, an upstream liquid supply channel shared by the two channels comprises an injection pump and a multi-way valve, and the injection pump inputs liquid into the multi-way valve. The first waste liquid collecting channel directly guides cleaning liquid, replacement liquid and the like which do not need to be reserved into a waste liquid barrel through a first output port of the multi-way valve. The second waste liquid collecting channel is sequentially connected with a plurality of resin columns, a waste liquid tank, a peristaltic pump and a waste liquid barrel through a second output port of the multi-way valve, waste liquid generated by the resin columns firstly enters the waste liquid tank for temporary storage, and when the liquid level of the waste liquid tank reaches a preset threshold value, the peristaltic pump automatically pumps and discharges the waste liquid into the waste liquid barrel for centralized collection. The device can distinguish reserved liquid from waste liquid according to steps, realizes automatic flow division, temporary storage and discharge of the waste liquid, avoids manual pouring of the waste liquid halfway, ensures continuous operation of a long-time and multi-channel separation process, and reduces the risk of personnel exposure in a radioactive waste liquid treatment process.

The invention provides a lignin extraction-sulfonic acid modification integrated preparation method based on eutecticevaporate solvent coupling microwaves, lignin sulfonate and application, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: mixing choline chloride, epichlorohydrin and 4-hydroxybenzenesulfonic acid, heating and stirring to obtain a deep eutectic solvent ternary system; the method comprises the following steps: adding biomass powder into a deep eutectic solvent ternary system, and reacting under a microwave condition; after the reaction is completed, filtering, and adjusting the pH value of the obtained filtrate to be neutral to obtain a mixed solution; and then adding an organic solvent into the obtained mixed solution for precipitation, filtering, washing and drying to complete lignin extraction-sulfonic acid modification. According to the method, in-situ grafting of sulfonic acid functional groups is realized in the lignin separation process through the ternary eutectic solvent in combination with microwave-assisted extraction, so that sulfonation modification of lignin is completed. After sulfonation modification, the obtained sulfonated lignin is applied to the drilling fluid, and the viscosity reduction effect can be achieved.

The invention relates to the technical field of biological separation materials, and discloses an amine-functionalized magnetic nano composite material and application thereof in protein separation and purification. The material has a core-shell structure and comprises a magnetic ferroferric oxide nano core, an ordered mesoporous silicon dioxide intermediate layer and a covalent grafted polyethyleneimine functional layer. By controlling the matching relationship between the pore diameter of mesopores and the molecular size of the polymer and adopting a crosslinking strategy, the material has high magnetic responsiveness, rapid mass transfer performance and high-density surface amino groups. The material shows high adsorption capacity, rapid adsorption kinetics and good cycle stability in the protein separation process, and is suitable for enrichment purification and metal chelating affinity separation of protein in a biological sample. According to the invention, the technical problems of low protein adsorption capacity, slow dynamics and poor cycling stability caused by compact shell layer, non-uniform amino distribution and limited mass transfer of the existing amine functionalized magnetic material are solved.

The invention discloses a water quality purification and circulation device in a rutile separation process, and relates to the technical field of water quality purification and circulation. Comprising a main body, a fixing frame is fixed to the bottom end of a lifting assembly, a stirring assembly is arranged at the bottom of the fixing frame, a plurality of stirring plates are arranged at the bottom of the fixing frame, the whole stirring plates are in a broken line shape, a discharging assembly is arranged in a storage barrel, and a moving assembly is arranged on one side of a discharging pipe. A bidirectional screw rod rotates to drive two sliding blocks to move bidirectionally, then a connecting plate drives a lifting plate to move in a reciprocating manner, so that a stirring plate and a filter plate stir wastewater and a coagulant, a second bevel gear rotates to drive a first bevel gear to rotate, the first bevel gear drives a cam to rotate, and then a moving plate moves in a reciprocating manner; when the moving plate moves, the stirring plate is driven to integrally contract or expand towards the first connecting rod fixedly connected with the fixed plate, so that the wastewater and the coagulant are fully mixed through the moving stirring plate.

The invention provides domestic sewage integrated continuous treatment equipment and a using method thereof.The continuous treatment equipment comprises a tank body, a motor, a self-cleaning assembly and a filtering assembly, a flow dividing channel is formed in the top of the tank body, and one end of the flow dividing channel is connected with an injection pipeline; the injection pipeline is used for guiding collected sewage into the flow dividing channel, and the opening area of the bottom of the flow dividing channel is in a linear shape. According to the sewage treatment device, two times of filtration treatment are provided, the separation process of solid waste is achieved, the separated solid waste is washed through the sewage body, and the collection purpose is achieved; according to the sewage treatment device disclosed by the invention, the sewage used for washing is further guided and filtered, a filtering and separating structure does not need to be frequently cleaned or replaced, the equipment cost is also reduced, the impact load resistance is high, the AI pre-aeration and multi-stage grid interception effects of the regulating tank are realized, and the problems of high energy consumption, low value and difficulty in supervision in the traditional sewage treatment are solved.

The furfural gas-residue separation device comprises a condensation box, an air separator and a spraying separator, a cyclone separator is connected with the spraying separator through a first air pipe, the spraying separator is connected with the condensation box through a second air pipe, the cyclone separator comprises a cyclone separation cylinder, and the cyclone separation cylinder is connected with the spraying separator through a second air pipe. A first air return pipe is arranged in the center of the upper end in the cyclone separation cylinder; the spraying separator comprises a spraying separation cylinder, an inner rotating cylinder is arranged in the spraying separation cylinder, a plurality of suspension wires are arranged at the upper end in the spraying separation cylinder and the lower end of the inner rotating cylinder, a plurality of suspension beads are arranged on each suspension wire, a second air return pipe is arranged in the center in the inner rotating cylinder, and a spraying pipe is arranged on one side of the second air return pipe; the furfural gas residues are subjected to multi-stage separation in various forms of centrifugal gravity, centrifugal spraying and shaking filtering, and layer-by-layer pushing is performed, so that the separation effect of the furfural gas residues is improved, and the purity of furfural gas is improved; in addition, in the spraying separation process, furfural gas residues can be pre-cooled at the same time, and the condensation efficiency is improved.

The invention provides a method for separating beta-casein from a dairy product, a method for separating kappa-casein and a casein mixture. The method for separating the beta-casein from the dairy product comprises the following steps: separating whey and casein in skimmed milk to obtain a casein concentrated solution; carrying out low-temperature microfiltration-percolation treatment on the casein concentrated solution at the temperature of 10 DEG C or below to obtain beta-casein permeate and a by-product of which at least part of beta-casein is removed; and heating the beta-casein permeate to realize self-association of the beta-casein permeate, and then carrying out ultrafiltration-percolation to obtain the beta-casein. The influence on the structure and performance of the beta-casein in the separation process is reduced, and the purity of the separated beta-casein product is improved.

The invention discloses a method for measuring the oxidation rate of silver ore, and relates to the technical field of mineral processing and process mineralogy analysis. The determination method comprises the following steps: preparing and segmenting a sample; silver grade calibration and reselection enrichment are carried out, and products with different mineralogical characteristics are obtained; carrying out automatic mineralogical analysis to obtain the type, content and dissemination characteristics of silver minerals; chemical leaching correction coefficient determination, wherein phase state distribution of silver is obtained through stepped chemical leaching, and the correction coefficient is calculated; determining a gangue wrapping correction coefficient, analyzing the silver content of the residue and calculating the correction coefficient; and finally, calculating the silver ore oxidation rate based on the automatic mineralogy analysis data and the correction coefficient. According to the method, through multi-technology fusion and data correction, the accuracy and reliability of measurement of the oxidation rate of the silver ore with low silver mineral content and uneven distribution are remarkably improved, and accurate data support is provided for formulation of a mineral separation process.

The invention discloses a method for separating an egg white polypeptide chain by adopting a coupling membrane, and particularly relates to the field of egg white polypeptide chains, the method comprises the following steps: S1, mixing fresh egg white with a buffer solution, adjusting the initial acid-base environment and initial temperature of a system, and measuring key basic parameters after dispersion treatment; s3, introducing the pretreated egg white liquid into a first-stage membrane assembly, monitoring separation process parameters, obtaining interception efficiency, dynamically adjusting operation parameters, and enabling permeate liquid to enter a second-stage membrane assembly; s7, monitoring system environment parameters and polypeptide activity, obtaining an activity retention rate, dynamically adjusting supply parameters, and maintaining the polypeptide activity; s8, classifying and collecting products according to molecular weight intervals, evaluating comprehensive separation efficiency, completing separation and verifying product indexes; by constructing an ultrafiltration membrane-nanofiltration membrane-reverse osmosis membrane three-stage coupling separation system and combining a dynamic parameter adjustment mechanism based on interception efficiency, separation selectivity and refined purity, the purity and separation efficiency of a polypeptide product are remarkably improved.

The invention relates to the technical field of rare earth element separation methods, in particular to a method for separating ytterbium and lutetium by using a phosphate adsorbent, which comprises the following steps: loading a phosphate solution on a porous solid-phase carrier by using a vacuum impregnation method, and carrying out reduced pressure evaporation and drying to obtain a phosphate solid adsorbent; filling an exchange column with the solid adsorbent to obtain the exchange column filled with the solid adsorbent; enabling a nitric acid solution containing ytterbium and lutetium to flow through an exchange column filled with a solid adsorbent to complete a column adsorption process; and performing elution, performing desorption by using a desorption solution to obtain the regenerated exchange column filled with the solid adsorbent, respectively collecting the ytterbium solution and the lutetium solution, completing the separation process, and repeating the steps. By adopting the steps, the separation of ytterbium and lutetium is directly realized from the nitric acid solution containing ytterbium Yb and lutetium Lu through column adsorption separation, leaching and desorption processes, and high-purity ytterbium and lutetium products are prepared.

The invention discloses an asphalt content nondestructive testing method based on ultrasonic vibration and an ultrasonic cleaner, according to the method, an adhesion interface of asphalt and aggregate is destroyed by utilizing an ultrasonic cavitation effect and mechanical vibration, the asphalt is promoted to be stripped from a mixture, and the asphalt content is accurately evaluated after drying and weighing. The device does not damage the components of the asphalt, can perform rapid physical separation on the mixture, avoids unnecessary loss of the asphalt components, does not need to add chemical agents in the separation process, does not affect the detection result, can improve the separation efficiency of the asphalt, improves the measurement accuracy of the asphalt content, and has a good application prospect. High instrument energy consumption and environmental pollution of a traditional method are avoided, and meanwhile, the method has the advantages of environmental protection and energy conservation.

The invention discloses an ozone catalytic oxidation coupling membrane separation sewage and wastewater advanced treatment and catalyst recycling method, and belongs to the technical field of sewage and wastewater treatment. The invention aims to solve the problem that the existing ozone powder catalyst is difficult to recover and not easy to reuse. By developing a catalytic ozonation coupling membrane separation process, an integrated process structure and a split process structure and an operation mode are provided, and a backwashing method is utilized, so that recycling of a high-efficiency powder catalyst is realized, and deep treatment and purification of sewage and wastewater are coordinated. According to the method, the high efficiency of ozone oxidation is fully exerted, a large number of hydroxyl free radicals generated by fast catalytic ozonolysis efficiently oxidize and degrade organic matters, the influence of complex water quality can be dealt with, a regular membrane cleaning strategy is adopted, membrane pollution is effectively relieved, the service life of a membrane is prolonged, and the recovery rate and catalytic efficiency of a catalyst are ensured; the device has the advantages of easiness in operation, small occupied area, simple equipment structure, easiness in long-term operation and the like.

The invention belongs to the technical field of perfume preparation processes, and particularly relates to a preparation process of fragrance lasting type perfume ligustral, which comprises the following steps: a catalytic dehydration step: mixing isohexylene glycol and a composite catalyst according to a mass ratio of 100: (0.8-1.2), and carrying out a catalytic dehydration reaction under a gradient heating condition to generate a methyl pentadiene mixture; a Diels-Alder addition step: carrying out an addition reaction on acrolein and a methyl pentadiene mixture according to a mass ratio of 1: (1.05-1.15) under a sectional temperature control condition, controlling the reaction pressure to be 0.25-0.35 MPa, carrying out a heat preservation reaction for 2 hours, and cooling to obtain a ligustral crude product; and a three-tower series rectification step: separating and purifying the ligustral crude product after the addition reaction through a light component removal tower, a middle component removal tower and a refining tower in sequence to obtain a ligustral finished product. By optimizing a catalytic system, reaction conditions and a separation process, the purity and aroma durability of the product are improved.

The invention belongs to the technical field of metallurgy, and relates to a method for comprehensively recovering valuable elements from nonferrous smelting waste acid, which comprises the following steps: S1, mixing the waste acid with pyrrhotite, reacting in a sulfur dioxide atmosphere, and after the reaction, carrying out solid-liquid separation to obtain copper slag and copper removal liquid; and S2, H2S gas is introduced into the copper removal liquid obtained in the step S1, and after reaction, arsenic sulfide slag and arsenic removal liquid are obtained through solid-liquid separation. According to the method, FeS in the pyrrhotite selectively reacts with CuSO4 in the waste acid to generate indissolvable copper sulphide precipitates, meanwhile, under the protection of the sulfur dioxide atmosphere, the arsenic element in the waste acid is kept in a dissolved state and does not precipitate, the copper and arsenic elements in the waste acid can be effectively separated through the synergistic effect of the FeS and the CuSO4, and the separation steps are simple and efficient.

The invention relates to the technical field of waste gas separation, and discloses a low-energy-consumption recovery method and system for organic waste gas, and the method comprises the steps: analyzing the volatile solvent component concentration, concentration fluctuation data, solvent recovery energy consumption correlation factors and temperature and humidity data of the organic waste gas through multi-source coupling, and obtaining a characteristic coupling feature set; analyzing key process conditions of waste gas separation based on the feature set feed-forward situation to obtain optimal energy consumption operation parameters; the parameters and conditions of the waste gas separation process are optimized in combination with the parameters and feature set dynamic constraint, and a Pareto optimal scheme is obtained; selecting a scheme as an optimal control strategy according to separation efficiency dynamic characteristics and energy consumption stability key factors in the feature set; the digital twinning collaborative deduction control strategy and feature set is coded into a separation control instruction; based on recovery energy efficiency verification and product quality detection indexes after actual operation, performing feedback optimization to obtain a low-energy-consumption instruction generation strategy; the low-energy-consumption recovery efficiency of the organic waste gas can be improved.

The invention relates to the technical field of wastewater treatment, in particular to a metal processing cooling liquid wastewater regeneration treatment system which comprises a treatment box, a guide rod is vertically mounted at the bottom of the treatment box, an oil collecting hopper is connected to the upper portion of the inner side of the treatment box through a driving part, and exchange holes are evenly formed in the outer side of a pipe body; hydrophilic oleophobic films are arranged in the exchange holes, and a plurality of kapok fiber balls are further placed at the bottom of the pipe body; a plurality of groups of regulation and control structures are arranged at the top end of the guide rod in an annular array, and the hydrophilic oleophobic film is cleaned and water-oil separation in the pipe body is controlled through the plurality of groups of regulation and control structures. The intermittent lifting oil collecting hopper moves on the surface of wastewater, oil on the surface of the wastewater can be collected, meanwhile, an oil-water mixture entering the pipe body can be separated through the hydrophilic and oleophobic film, the surface of the hydrophilic and oleophobic film can be cleaned in the separation process, and the hydrophilic and oleophobic film is prevented from being blocked by particles.

The invention provides a high-mixing-amount RAP recycled asphalt mixture design method based on a fine separation process, which is characterized in that based on the RAP fine separation process, an RAP material is treated through a grading stripping and high-frequency screening (frequency is greater than or equal to 25Hz) process, so that the grading variation coefficient is less than or equal to 6.59%, and the caking rate is less than or equal to 5.2%; the mass ratio of the coarse material to the fine material of the RAP is controlled to be 10: 2.5-10: 4.5, the reference value of the total mixing amount of the RAP is obtained through the equilibrium design (changing cross point) of an indoor performance test, and then the actual value of the total mixing amount of the RAP is determined through a correction formula. The invention further provides the high-mixing-amount RAP recycled asphalt mixture designed according to the design. According to the design method of the high-doping-amount RAP recycled asphalt mixture and the designed high-doping-amount RAP recycled asphalt mixture, the problem of collaborative optimization of the ratio of coarse and fine materials and the doping amount threshold value can be solved, and collaborative optimization of high doping amount and high performance can be achieved.

The invention provides a preparation method and application of a potassium adsorption material and a selective extraction method of potassium in mixed alkali metal salt. The method comprises the following steps: firstly, preparing adsorbent slurry, immersing a porous metal material into the slurry, and carrying out ultrasonic treatment, maintenance, drying and activation to obtain a potassium adsorption material which can selectively extract potassium ions in mixed alkali metal salt; the selective extraction method of potassium in mixed alkali metal salt comprises the following steps: adding a potassium adsorption material into alkali metal salt in a molten state to selectively fix potassium ions to the potassium adsorption material, then adding a first extraction agent, converting insoluble potassium fixed by the potassium adsorption material into soluble potassium ions, and filtering to obtain a first filtrate; adding a second extracting agent into the first filtrate, filtering to obtain a second filtrate, and performing evaporative crystallization on the second filtrate to obtain a potassium salt product; the problems that an existing industrial mixed salt separation process is tedious, high in cost, low in resource recovery efficiency, free of selectivity and pertinence and the like are solved.

The invention relates to the technical field of wastewater treatment equipment, in particular to an automatic separation process and device for heavy metal sediment in wastewater treatment.The device comprises a sediment separation pond used for containing wastewater, and a sediment collection barrel used for containing sediment in the wastewater is arranged in the sediment separation pond; an opening is formed in the upper portion of the sediment collecting barrel, a push plate is arranged above the opening, the sediment collecting barrel is provided with a barrel side wall and a barrel bottom plate which can be separated, and the barrel side wall and the push plate are connected with a separation driving mechanism. The separation driving mechanism can drive the barrel side wall and the push plate to get close to each other so as to push wastewater and sediments to be discharged along a gap between the barrel side wall and the barrel bottom plate, so that the sediments fall into different areas to be collected. As the shapes of parabolas generated by the sediments with different densities are different, the horizontal distances between the sediments with different densities and the sediment collecting barrel are different after the sediments with different densities fall into the bottom, so that different heavy metal sediments can be separated.

The invention discloses a method for improving hydrogen-based reduction-electric furnace melt separation efficiency of vanadium titano-magnetite, which comprises the following steps: (1) mixing the vanadium titano-magnetite with slaked lime, magnesite, bentonite and water to obtain a mixture, and pelletizing to obtain green pellets; the addition amount of the slaked lime and the magnesite is controlled to enable the binary alkalinity of the mixture to be 0.4-0.6 and the quaternary alkalinity to be 0.6-0.8; (2) the green pellets are dried and roasted, and oxidizing pellets are prepared; (3) the oxidizing pellets are subjected to hydrogen group reduction, and DRI containing vanadium and titanium is obtained; and (4) adding the DRI into an electric furnace, and then adding carbon for melt separation to obtain vanadium-containing molten iron and titanium-containing slag. According to the method, calcium and magnesium are added into the pellets, the ore phase structure of the vanadium-titanium ore pellets is changed, the reducibility of the vanadium-titanium magnetite pellets is improved, the vanadium-titanium DRI metallization ratio is increased, additional flux does not need to be added in the DRI melt separation process, the vanadium-titanium yield is larger than 92%, and the method has good application prospects.