37results about How to "Solve the adsorption problem" patented technology

The semiconductor pressure reducing valve comprises a valve body, a rear cover, a lock nut and a handle, the tail end of an inlet channel of the valve body is arranged to be of a reducing opening structure, a valve body is arranged in the inlet channel, the upper portion of the valve body is connected with a valve body valve rod, and the upper end of the valve body valve rod is fixedly connected with the bottom of a membrane head connecting block; a spring pressing block, a buffer spring, a diaphragm head, a diaphragm pressing block and a diaphragm are sequentially arranged in the rear cover from top to bottom, the outer periphery of the diaphragm is fixed between the diaphragm pressing block and the upper end of the valve body, the inner periphery of the diaphragm is fixedly connected with the lower portion of a diaphragm head connecting block, and the upper portion of the diaphragm head connecting block is fixedly connected with the bottom of the diaphragm head. By improving the structure of the valve body, a spring on the lower portion of the valve body is omitted, and it is guaranteed that a medium channel is closed in a non-working state by means of fixed connection of the membrane head connecting block and the valve rod of the valve body; opening of the medium channel is guaranteed by rotating the handle and pressing down the valve rod of the door body, the dead volume in the medium channel is greatly reduced, the problems of gas residue and adsorption are solved, and favorable conditions are provided for meeting the requirement for gas cleanliness.

The utility model relates to the technical field of zeolite molecular sieves, and discloses a device for testing the adsorption performance of a zeolite molecular sieve, which comprises a support frame, the left part of the upper end of the support frame is fixedly connected with two support seats, and the upper ends of the two support seats are jointly and fixedly connected with a three-stage filter box in a penetrating manner; a waste gas inlet pipe is fixedly connected to the middle of the left end of the third-stage filter box in a penetrating mode, a waste gas conveying pipe is fixedly connected to the middle of the right end of the third-stage filter box in a penetrating mode, and a zeolite adsorption box is fixedly connected to the end, away from the third-stage filter box, of the waste gas conveying pipe in a penetrating mode; a high-pressure blower is fixedly connected to the middle of the lower end of the zeolite adsorption box in a penetrating manner, and a waste gas outlet pipe is fixedly connected to one end, away from the zeolite adsorption box, of the high-pressure blower in a penetrating manner. The device for testing the adsorption performance of the zeolite molecular sieve can solve the problem of the adsorption performance of the zeolite molecular sieve in adsorption of different VOCS gases, so that the ratio of raw materials of the zeolite molecular sieve is optimized, and the device is suitable for being widely used.

The utility model discloses a vacuum ceramic suction cup surface treatment structure which comprises a shell and a motor, the motor is fixedly connected to the right side of the top of the shell, a groove is formed in the bottom of the shell, a cleaning groove is formed in the left side of the top of the shell, and a cleaning device is arranged in an inner cavity of the cleaning groove. A transmission device used in cooperation with the cleaning device is arranged in an inner cavity of the groove. The cleaning groove, the cleaning device and the transmission device are used in cooperation, the motor is started, the output end of the motor drives the second transmission shaft to rotate, the second transmission shaft drives the first transmission shaft to rotate through the transmission belt, and the first transmission shaft drives the cleaning rotating plate to rotate through the connecting shaft. And dust or particulate matters are adhered to the surface of the vacuum chuck, so that the adsorbability of the vacuum chuck in use is influenced.

This invention discloses a deep defluorination agent and its application method, specifically relating to the field of defluorination agents (GMS-FS series products). It includes a valence-state switching active phase, a reaction interface building component, a dynamic electronic regulation component, and a structure adjustment and protection component. The valence-state switching active phase provides a reversible valence-state transition reaction center, achieving specific capture of fluoride ions through an electron trapping effect when interacting with them. The reaction interface building component forms a polar gradient interface layer on the surface of the defluorination agent, guiding fluoride ions to migrate towards the active center and locally enrich them, thereby improving defluorination efficiency. By constructing a rare metal valence-state switching active phase with La2O3 and UO2 as its core, combined with a polar gradient interface guiding layer and a dynamic electronic regulation mechanism, preferential migration and specific capture of fluoride ions are induced in a multi-ion coexistence environment, achieving stable deep defluorination under high salinity and highly competitive ion conditions.

This invention provides a method for complexing and leaching beryllium from lepidolite leaching residue. The lepidolite leaching residue is mixed with a sulfuric acid solution containing DTPA, and the pH is adjusted to 0.1-1.5, the DTPA concentration to 0.03-0.1 mol / L, and the solid-liquid ratio to 1g:8-15mL. The resulting slurry is ball-milled, and the exposed beryllium is in situ complexed by DTPA through mechanochemical processes to disrupt the mineral phase lock-in. After solid-liquid separation, a beryllium-containing filtrate and purified residue are obtained. This invention achieves a beryllium leaching rate of over 60%, effectively solving the problems of deep beryllium lock-in and deactivation of chelating agents under strong acid conditions. The process operates at room temperature and low energy consumption, showing promising prospects for industrial application.

The application relates to the technical field of magnetic yoke punching sheet stacking, and particularly discloses a grabbing and stacking device for magnetic yoke punching sheets, which comprises a base frame, a storage module, a stacking module and a grabbing module driven by a gantry robot, the grabbing module comprises a visual positioning assembly for collecting visible light and near-infrared data, a solving unit for solving adsorption point coordinates based on a mask matrix, multi-modal fusion and a thermal deformation coefficient, a plurality of vacuum suction cups with a moving module, and an adsorption state detection assembly for detecting flatness and real-time pressure, and an adsorption force control unit for performing graded initial adsorption based on the flatness data and dynamic compensation based on the real-time pressure and a double safety threshold, the stacking module comprises a center positioning column and a stacking alignment unit with a radial synchronous telescopic mechanism, and the alignment rod of the stacking alignment unit is provided with auxiliary wheels, a flexible polishing belt and a pressure sensor; the application realizes high-precision positioning, self-adaptive adsorption and high-coaxiality stacking.

The present invention belongs to the technical field of waste gas treatment, and specifically discloses a waste gas treatment device for a reactor, including a filter box, wherein the four corners of the upper side of the filter box are respectively vertically connected with a first air inlet pipe, a second air inlet pipe, a first air outlet pipe and a second air outlet pipe, the first air inlet pipe and the second air inlet pipe are horizontally connected with an air inlet main pipe, the first air outlet pipe and the second air outlet pipe are horizontally connected with an air outlet main pipe, activated carbon is placed in the filter box, a fixing ring is fixedly provided in the middle of the first air inlet pipe, the second air inlet pipe, the first air outlet pipe and the second air outlet pipe, a cam-type two-way switching filter mechanism is provided on the lower side of the fixing ring, and a vortex dust separation and temperature control mechanism is provided at one end of the air inlet main pipe. The present invention adopts a two-way ventilation design, so that the waste gas alternately enters from both sides of the activated carbon bed layer, effectively avoiding the problem of uneven saturation of activated carbon adsorption, and adopts a vortex dust separation and temperature control mechanism to achieve waste gas cooling and particle separation, simplifying the pretreatment process.

The invention discloses a preparation method of a formaldehyde adsorption antibacterial material taking activated carbon as a carrier, activated carbon fibers are soaked in a potassium permanganate solution to generate manganese dioxide, then the manganese dioxide is soaked in an amine quinone network substance solution and a silver solution in sequence, and the high specific surface area and the porous structure of the manganese dioxide provide a large number of adsorption sites; the amine-quinone network and silver ions can improve the overall antibacterial ability of the material, and amino and quinonyl on the amine-quinone network can enhance the particle adsorbability of activated carbon through hydrogen bonds, Van der Waals force and the like, so that the defects of poor small particle adsorption ability and poor antibacterial effect of an activated carbon adsorption material in the prior art are overcome; the amine-containing compound is polyethyleneimine, the quinone-containing compound is 5-hydroxy-1, 4-naphthoquinone, the mixing mass ratio of the amine-containing compound to the quinone-containing compound is 1: 1, the amine-quinone network substance has a network structure, and the network structure can provide additional adsorption sites and enhance the adsorption capacity to small particles.

The invention discloses a textile color detection device, comprising a mobile buffer structure as a basis, wherein a placement detection structure is arranged on the mobile buffer structure, wherein the mobile buffer structure comprises a base plate with a first damping shock absorber and a locking universal wheel at the bottom, and a mounting block with an internal slide groove is arranged on the base plate, wherein the slide groove is installed with one end of a movable connecting member through a sliding block, and the other end of the movable connecting member is movable under a groove through a connecting pin, and a connecting spring is arranged between the groove through-hole members, the groove through-hole member passes through a sliding rod and is arranged under the mounting plate through a fixed block, and a second damping shock absorber installed with the base plate is arranged under the mounting plate, and the placement detection structure comprises a detection shading component installed with a rotation adjustment component, and the textile color detection device achieves a through-two-way connection effect through the arranged connecting spring.

The utility model relates to laser processing auxiliary equipment field especially, and more particularly to a kind of processing product cleaning device.The utility model provides a kind of processing product cleaning device, including four square boxes, air cylinder, cleaning brush, product, dust extraction nozzle, ion wind stick, ion wind nozzle and blow nozzle etc., four square boxes are located above product, air cylinder is installed in four square boxes front side, air cylinder telescopic end is connected with cleaning brush, cleaning brush is contacted with product, dust extraction nozzle is installed in four square boxes back side, ion wind nozzle is installed in four square boxes left lower side, ion wind stick is arranged in four square boxes left side, and blow nozzle is installed in four square boxes front side.The synergies of air cylinder, cleaning brush, dust extraction nozzle, ion wind stick, ion wind nozzle and blow nozzle, can carry out all-round, multi-level cleaning to tiny and electrostatic dust particles, effectively improve cleaning efficiency, ensure that product surface is no dust residue, significantly improve the processing quality and yield of product in multiple laser etching process.

The utility model relates to the technical field of crawl devices, and particularly provides a hollow magnetic suction chassis and a crawling robot, the hollow magnetic suction chassis comprises: a chassis, the chassis is provided with a penetrating part, and the penetrating part is used for loading different loads; the floating part is rotationally connected to the chassis; and the plurality of magnetic attraction parts are detachably arranged on the chassis and the floating part. And when different loads are loaded, the gravity center position can be kept relatively stable, and therefore the movement performance of the chassis is remarkably improved. The fitting degree between the chassis and the crawling surface is enhanced, so that the chassis can adapt to various crawling surfaces, close contact is kept, and the stability of the chassis and the adsorption reliability of the crawling surface are enhanced; through flexible arrangement of the magnetic attraction pieces, the fitting degree and the adsorption force between the base plate and the crawling face are further strengthened, the problem of iron scrap adsorption possibly caused by direct use of magnetic wheels or crawler belts is solved, and therefore the stability and durability of the magnetic attraction force of the hollow magnetic attraction base plate are greatly improved.

The invention belongs to the technical field of concrete testing, and particularly relates to a concrete impermeability test device for hydraulic engineering quality detection, the concrete impermeability test device comprises a rack, a plurality of groups of placing parts and a pressurizing part, test pieces are placed in the placing parts, the placing parts are detachably mounted on the rack, and the pressurizing part is detachably mounted on the rack; a plurality of supporting columns of the supporting assembly are evenly distributed on the rack, stable supporting is formed on the press-fitting assembly, and a horizontal plate is prevented from inclining and shaking in the press-fitting process. The position of the horizontal plate can be firmly limited through cooperation of the lead screw and the lead screw nut, part displacement during press fitting is prevented, the structural stability in the test operation process is guaranteed, and potential safety hazards are reduced.

The application provides a motor assembling device and method of an electric composite turbocharger, and belongs to the field of ship power turbochargers. The assembling problem of an integrated motor of an electric composite turbocharger is solved. The motor rotor of the device is fixed on a compression impeller, a guide block is installed on the motor rotor shaft, a motor stator is fixed outside the motor rotor, the motor stator is installed on a motor support frame, a centering flange and a tension and compression flange are sequentially installed behind the motor stator, a locking flange is installed at the center of the centering flange, a tension and compression screw rod passes through the locking flange and the tension and compression flange, one end of a motor guide rod is axially fixed with the motor support frame, and the other end is fixedly positioned with the locking flange. The application has the advantages of ingenious design, convenient installation, efficient assembling and the like.

A kind of glass curtain wall cleaning robot of flexible cable drive peristalsis cleaning, including cleaning main body (10), front foot pair (20), peristalsis cleaning (30) and adsorption mechanism (60), the cleaning main body (10) is coupled to flexible cable pair (11) connection;The front foot pair (20) is respectively drivenly connected to the flexible cable pair (11);The peristalsis cleaning (30) includes cleaning mechanism (40) and peristalsis foot pair (50), the peristalsis foot pair (50) is respectively drivenly connected the flexible cable pair (11), and the peristalsis foot pair (50) is simultaneously coupled to front foot pair (20) and cleaning main body (10), along the flexible cable pair (11) drive cleaning main body (10) reciprocating peristalsis between stretch position (31) and hump position (32), while, cleaning mechanism (40) carries out different cleaning procedure to glass curtain wall along up-down direction.The glass curtain wall cleaning robot of flexible cable drive peristalsis cleaning, cleaning efficiency is high.

The utility model relates to power maintenance equipment technical field, concretely is a grounding rod, including cylindrical body and adjusting mechanism, the bottom end of body is tapered, the inside of body is equipped with vertical cylindrical cavity, three vertical and cavity intercommunication limit grooves are equidistantly seted up on the outer wall of body along its circumference direction, the horizontal sliding connection of limit groove has the anchor plate, adjusting mechanism is established at the top of body and is connected with three anchor plates transmission for driving three anchor plates synchronous reverse movement. The utility model discloses through adjusting mechanism drive three anchor plates synchronous extension, and multiple anchor teeth on the anchor plate embed the surrounding soil, form the composite fixed structure of " surface contact and point and hold fast", increase the contact area and friction force with the soil. Compared with the traditional single columnar structure, can effectively resist the inclination, loose tendency, especially applicable to the complex soil environment of soft or many sandstone.

The utility model discloses a kind of waste gas treatment devices for plastic product production, including first processing box, for realizing to waste gas preliminary spray purification treatment spray mechanism, and spray mechanism is arranged inside the first processing box, second processing box, install at the top of first processing box, for realizing to waste gas adsorption purification treatment adsorption mechanism, and adsorption mechanism is arranged inside the second processing box, the utility model is set by spray mechanism and adsorption mechanism, the spray mechanism in first processing box can waste gas preliminary spray purification treatment, can effectively remove particulate matter, water-soluble harmful component etc. in waste gas, reduce the concentration of pollutant in waste gas, reduce burden for subsequent adsorption treatment, cooperate with the adsorption mechanism in second processing box then waste gas after spray treatment can be further adsorbed and purified, remove volatile organic compounds, odor gas and other hardly soluble harmful components in water, both synergic cooperation, can ensure that waste gas is discharged up to standard.

The invention relates to the technical field of nanofibers, in particular to quaternization modified GA-PVA / PEI-Cl nanofibers and a preparation method and application thereof.The preparation method specifically comprises the following steps that S1, PVA / PEI composite nanofibers are prepared, specifically, polyvinyl alcohol powder and water are stirred for 4 h in an oil bath pan at the temperature of 85 DEG C through a magnetic stirrer, and then a uniform and transparent spinning solution, namely, a solution A, is obtained; stirring polyethyleneimine and water at room temperature for 4 hours to obtain another uniform and transparent spinning solution, namely a solution B; mixing the solution A with the solution B to obtain a solution C, and spinning the solution C in an electrostatic spinning machine to obtain PVA / PEI composite nanofibers; s2, preparing a GA-PVA / PEI nano fiber; and S3, preparing the quaternized GA-PVA / PEI-Cl nano fiber. The selective adsorption of AuCl4 <-> is realized between the prepared quaternization modified GA-PVA / PEI-Cl nanofiber and the AuCl4 <-> through the interaction of electrostatic interaction, coordination, oxidation reduction and the like.

The present invention discloses a carboxyl-cyano bifunctional group-modified silica material with adjustable polarity, and its preparation and application. In order to solve the problem that the cyano solid phase extraction column has a poor enrichment effect on cationic targets during sample pretreatment, a carboxyl-cyano bifunctional group-modified silica material is prepared by acidifying the cyano-modified silica with a sulfuric acid solution. By changing the concentration of the sulfuric acid solution and the acidification temperature, the carboxyl bonding amount can be adjusted to control the surface polarity of the material, so that the material can achieve the enrichment of non-ionic polar targets and cationic targets in polar solutions.

The invention relates to the technical field of nanofibers, in particular to a quaternized modified PACE-Cl nanofiber and a preparation method and application thereof.The preparation method comprises the steps that S1, PAN electrostatic spinning nanofiber is prepared, specifically, polyacrylonitrile, polyvinylpyrrolidone, carboxylated multi-walled carbon nanotubes and N, N-dimethylformamide are stirred for 6-12 h at the normal temperature, and then a uniform and transparent spinning solution is obtained; the preparation method comprises the following steps: preparing a PAN / PVP / MWCNT-CCOH spinning solution, putting the obtained spinning solution into a 10mL injector, spinning in an electrostatic spinning machine to obtain PAN / PVP / MWCNT-CCOH nanofibers, and putting the obtained nanofibers into hot water at 60-100 DEG C to remove PVP to obtain PAN / MWCNT-COOH nanofibers; s2, preparing nitrogen-rich modified PACE nanofibers: putting the PAN / MWCNT-COOH nanofibers prepared in the step S1 and an aqueous solution of polyethyleneimine into a high-pressure reaction kettle, so as to obtain the modified PACE nanofibers; and S3, preparing the quaternized PACE-Cl nano fiber. According to the quaternized PACE-Cl nanofiber disclosed by the invention, the surface of the prepared nanofiber is rich in positive charges, so that the selective enrichment and adsorption of AuCl4 <-> which is represented as negative charges in an aqueous solution are realized.

The invention discloses a design and synthesis method of tumor dual-targeting polypeptide, the synthesis of the polypeptide adopts an Fmoc manual solid-phase synthesis technology, and the method specifically comprises the following steps: S1, amino acid protection; s2, swelling the resin; s3, removing an amino protecting group of the resin; s4, grafting a first amino acid; s5, removing an Fmoc protecting group of an amino group; s6, grafting other amino acids according to the designed polypeptide sequence; s7, performing disulfide bond cyclization; s8, shrinking; s9, cutting is conducted; and S10, product purification. The Fmoc manual solid-phase synthesis technology is adopted, operation is easy and convenient, synthesis efficiency is high, the method is suitable for large-scale production, and a new effective tool is provided for tumor targeted therapy and diagnosis.

This application discloses a thin-film mechanical oscillator with an anti-adsorption structure and its preparation method. The thin-film mechanical oscillator includes: a substrate; a first metallization layer grown on one side of the substrate; a first sacrificial layer grown on the first metallization layer and having a periodically arranged columnar structure; a second sacrificial layer grown on the first sacrificial layer and serving as a support structure located at the edge of the first sacrificial layer; a high-tensile stress thin film layer grown on the second sacrificial layer, the high-tensile stress thin film layer having a suspended thin film region and a non-suspended thin film region, and a cavity between the high-tensile stress thin film layer and the substrate that allows the suspended thin film region to be suspended; the periodically arranged columnar structure is located in the region of the cavity; the non-suspended thin film region is supported by the first and second sacrificial layers; and a second metallization layer grown on the high-tensile stress thin film layer and located at the center of the suspended thin film region and the non-suspended thin film region.

The utility model relates to the technical field of benzene series pollutants, and discloses an air catalyst device for solving indoor benzene series pollutants, which comprises a device main body and a catalyst plate, the catalyst plate is detachably arranged in the device main body, the side part of the device main body is provided with a first connecting hole, and the side part of the catalyst plate is provided with a second connecting hole. Rotating bolts are installed in the first connecting holes and the second connecting holes, clamping assemblies are arranged in the rotating bolts, through the arrangement of the rotating bolts, the catalyst plate is inserted into the device main body, then the rotating bolts are in threaded connection with the interior of the device main body, then rotating columns are inserted into the rotating bolts, the rotating columns extrude abutting blocks, the abutting blocks abut against the catalyst plate, and the catalyst plate is clamped into the device main body. According to the air catalyst device, the driving plate and the clamping groove are clamped, good connection between the driving plate and the clamping groove is guaranteed, through the design, firm connection between the catalyst plate and the device body can be guaranteed, loosening or falling off is avoided, and the problem that the efficiency of the air catalyst device is possibly reduced due to loosening of clamping connection is solved.

The utility model relates to polarizing plate material taking device technical field, concretely is a kind of polarizing plate separating material taking device, including pedestal, material taking frame and material taking table, the pedestal is provided with rotating table, the rotating table is provided with bin and first electrostatic generator, electrostatic generating stick is installed on the bin side wall, the first electrostatic generator is connected with electrostatic generating stick by wire, the material taking frame inner chamber is provided with rotating motor, the rotating motor output end is connected with rotating stand, the rotating stand top is provided with lifting motor, the lifting motor output end is installed with screw rod, by first electrostatic generator and electrostatic generating stick can be to the polarizing plate in bin exert electrostatic, again by the suction cup of lifting platform bottom setting to polarizing plate is grabbed, in the process of grabbing, second electrostatic generator cooperation electrostatic generating board will produce homopolar electrostatic, by the principle of homopolar repulsion, can solve the problem of adsorption between polarizing plate.

This invention discloses a core-shell material for the separation of fluorine-containing electronic specialty gases and its preparation method. Addressing the separation needs of fluorine-containing electronic specialty gases such as SF6 and CF4 commonly used in the semiconductor and photovoltaic industries, this invention uses monodisperse PSD microspheres as the core and in-situ grows HKUST-1 under controlled low-temperature synthesis conditions to prepare a core-shell MOF composite material. The adsorption selectivity, separation performance, and mechanism of this material for fluorine-containing gas / nitrogen mixtures were investigated. The prepared PSD@HKUST-1 core-shell material exhibits a tunable pore structure and abundant adsorption sites, demonstrating excellent separation performance for fluorine-containing electronic specialty gases, enabling efficient recovery and purification of these gases. This invention features a simple process and novel structural design, showing promising application prospects in the fields of electronic chemical purification and waste gas treatment.

The present application relates to a kind of preparation methods of absorbent gelling and atmospheric environment water collection device, including the top of the collection chamber is covered with condensation chamber collection chamber, and the top of collection chamber is horizontally provided with filter screen, and filter screen is laid with absorbent gel layer;The bottom of absorbent gel layer is disc-shaped, and the top surface of disc is provided with multiple convex strips, which are uniformly and spacedly arranged along the circumference of disc, and each convex strip is in parentheses and two ends are located on different circumferences of disc respectively.The absorbent gel uses porous gel as base to carry adsorbent, uses Al-Fum modified with lithium chloride as adsorbent, and the hygroscopic performance of the material doped with carboxylated carbon nanotube is improved, and it obtains good photo-thermal performance, so as to realize hygroscopicity and desorption under low humidity.The atmospheric environment water collection device provided by the present application can realize automatic water collection and desorption under low humidity, and solve the problem of leakage of hygroscopic salt in the process of adsorption and desorption.

The application relates to the technical field of industrial automation, and discloses a feeding device for massage device production and processing, which comprises a belt conveyor, a mechanical arm and a vacuum chuck, and further comprises a vacuum-chuck suction-force self-adaptive adjustment system, the system comprising a static adsorption reference evaluation module, a dynamic disturbance quantification module, a posture-load coupling robustness evaluation module, a vacuum supply capacity evaluation module and a self-adaptive negative pressure decision and execution module. According to multi-source information such as product weight, motion acceleration, grabbing inclination angle and air source pressure, each module calculates a basic pressure coefficient, a dynamic load coefficient, a posture-load coupling robustness and a system efficiency coefficient; and the self-adaptive negative pressure decision and execution module dynamically adjusts the negative pressure value of the vacuum chuck according to the robustness and the efficiency coefficient. The application can self-adaptively adjust the adsorption force, improve the grabbing reliability and production efficiency, and reduce product damage.

The application discloses a kind of packing box's stacking robot, belongs to packing machinery technical field, and stacking robot includes operation terminal, the top of the operation terminal is equipped with six-axis robot arm, and the movable end of the six-axis robot arm is connected with clamping device by pressure sensing mechanism, the clamping device includes self-lifting clamping component, connecting plate, flexible suction cup component, centering component.The self-lifting clamping component, connecting plate, flexible suction cup component, centering component of the present application are set, two kinds of modes of integrated adsorption clamping and mechanical clamping, can be flexibly switched according to packing box type, without changing jig, simultaneously possess pressure response, self-adapting adsorption and centering function, effectively improve the degree of flexibility, reliability and precision of stacking operation.

The present invention discloses a method for adsorbing short-chain perfluoro compounds, comprising the following steps: preparing restricted water-modified activated carbon with different micropore distribution ratios by water vapor diffusion according to the concentration of dissolved organic matter DOC in the target water body, and using the restricted water-modified activated carbon to adsorb the short-chain perfluoro compounds in the target water body. The method constructs a restricted water structure in the activated carbon pores by a reagent-free, low-cost water vapor diffusion method, and drives the mass transfer process of short-chain perfluoro compounds in the activated carbon nanopores with a highly broken restricted water hydrogen bond network, thereby significantly improving the adsorption capacity of short-chain perfluoro compounds. The restricted water-modified activated carbon prepared by the method can upgrade the existing activated carbon adsorption process in situ, realize the efficient removal of short-chain perfluoro compounds in micro-polluted water bodies, drinking water and sewage, which is of great significance to ensuring water quality safety.

The utility model discloses a continuous ion exchange system based on multi-stage dynamic switching and intelligent feedback control, which is characterized in that a liquid inlet control device is arranged on a main liquid inlet pipe of each process position and is used for acquiring liquid inlet pressure and flow velocity in real time; an ultrasonic distance sensor is arranged at the upper end part of each resin column and is used for immediately detecting the height of resin in the resin column; a multi-dimensional data acquisition device is arranged on a liquid outlet pipe of each resin column and is used for acquiring the solid content, the ion concentration and the pH value of discharged liquid in real time; after the collected data is efficiently analyzed by the control system, the indexes of liquid inlet and liquid outlet of the ion exchange system can be monitored, and dynamic switching can be carried out in time. According to the scheme, the stability of the whole ion exchange system can be improved by monitoring the feed liquid in each stage in real time, manual intervention caused by sudden feed concentration change is reduced, the working efficiency is greatly improved, and meanwhile, the expenditure cost of a large amount of manpower and material resources is saved.