88results about "Ion exchange regulation/control" patented technology

The invention particularly relates to an intelligent monitoring method and system for the service life of an ion exchange resin mixed bed, and belongs to the technical field of ion exchange resin water treatment. The method comprises the following steps: collecting real-time flow and real-time conductivity of mixed bed inlet water; executing a mixed bed service life intelligent evaluation algorithm, and dynamically estimating a mixed bed exchange capacity consumption rate and a mixed bed residual operation duration; displaying the exchange capacity consumption rate of the mixed bed and the residual running time of the mixed bed in real time in the form of numbers, progress bars or trend curves; and when the exchange capacity consumption rate of the mixed bed and the residual operation duration of the mixed bed are lower than a preset threshold value, triggering an early warning prompt. The system implements the steps of the method. The invention provides the universal, convenient and economic intelligent monitoring method and system for the service life of the ion exchange resin mixed bed, and the real-time dynamic monitoring of the residual exchange capacity of the ion exchange resin mixed bed and the accurate prediction of the residual operation service life are realized.

The utility model provides a special resin bed for amine liquid purification, the resin bed is arranged in a purification tank, the purification tank comprises a tank body and an end cover arranged on the tank body, a water distributor is arranged in the purification tank, the water distributor comprises a filter layer, an ion exchange resin layer, a resin regeneration layer and a spraying layer which are sequentially arranged from top to bottom, according to the amine liquid purification grease bed, efficient physical filtration and adsorption purification operation can be carried out on amine liquid to be purified through the water distributor arranged in the purifier, and the problem that a traditional amine liquid purification grease bed only depends on an ion exchange resin layer to carry out simple adsorption purification is solved; the problems that the purification effect of the amine liquid is poor and the service life of an amine liquid purification grease bed is short due to the fact that impurities in the amine liquid are not physically filtered in advance in the prior art are solved, the purification efficiency and effect of the amine liquid are greatly improved, and the service life of the water distributor is prolonged.

The utility model provides a resin column purification device for mirabilitum praeparatum toothpaste production. The resin column purification device comprises an extracting solution storage tank, a tubular centrifuge and a chromatographic separation device which are connected in sequence, and water eluent and alcohol eluent output by the chromatographic separation device are respectively introduced into a theanine purification section and a tea polyphenol purification section to obtain purified theanine and tea polyphenol; the theanine purification section comprises a first mixing tank, a cation exchange resin column and a first concentrator which are connected in sequence, output liquid of the acid liquor storage tank is connected into the first mixing tank, and output liquid of the alkali liquor storage tank is connected into the cation exchange resin column; the tea polyphenol purification section comprises a desorption solution storage tank and a second concentrator which are connected in sequence. The resin column purification device for mirabilitum praeparatum toothpaste production provided by the utility model can effectively separate and purify amino acid and tea polyphenol in a tea extract, and improves the treatment capacity of a tea extracting solution.

The utility model discloses a phosgenation product byproduct hydrochloric acid filtering device, and aims to solve the problems of high cost, high pollution risk, non-ideal treatment effect and the like in the traditional treatment method. The device comprises a first resin column and a second resin column, a specific resin combination technology is adopted, sulfate radicals, ferric ions and organic pollutants in the byproduct hydrochloric acid are synergistically removed through the physical adsorption effect of resin, and the chromaticity and purity of the hydrochloric acid are remarkably improved. A PLC automatic control system is adopted in the device, starting and stopping of a valve and a pump are automatically adjusted according to the liquid level and hydrochloric acid transparency, and the stability and high efficiency of the purification process are guaranteed. Besides, through COD (Chemical Oxygen Demand) on-line monitoring of backwashing water, environmental protection and high efficiency of the backwashing process are ensured, the backwashing water can be recycled after being treated, and zero discharge of wastewater is realized. The device is simple in structure, convenient to operate and high in energy efficiency, and is an effective solution for treating the byproduct hydrochloric acid in the phosgenation reaction process.

The utility model discloses equipment for preparing hypochlorous acid based on an ion exchange method, which relates to the technical field of hypochlorous acid preparation equipment and comprises a water inlet part, and the liquid inlet end of the water inlet part is connected with an external water supply pipeline; the liquid inlet end of the liquid injection part is connected with the water inlet part; the liquid inlet end of the ion exchange part is connected with the liquid injection part, and the liquid outlet end of the ion exchange part is connected with the hypochlorous acid using terminal through an external liquid conveying pipeline; the pipe diameter of the use terminal is greater than or equal to that of the liquid injection part; the controller is electrically connected with electrical elements in the water inlet part and the liquid injection part; according to the device, high-concentration hypochlorous acid can be prepared, the liquid outlet amount is large, and the weakly acidic cation exchange inner core has a good pH buffering function, so that the potential safety hazard of chlorine overflow does not exist.

The utility model discloses a novel ion exchange column which comprises a column body, an exchange liquid inlet, a resin outlet and at least one air inlet are arranged at the bottom of the column body, a filtering device is arranged in the column body, and an emptying port, an exchange liquid outlet, an observation port, a first liquid inlet and a second liquid inlet are arranged at the top of the column body. According to the novel ion exchange column, a liquid inlet mode, a bottom structure and a top structure are improved, and a multi-point blowback system is designed for a column body; and the volume of the exchange column is enlarged, so that the filling amount of single-column resin is increased. Through the improvement, the wall effect and siphonage are effectively avoided, and a resin bed layer is prevented from being tightly pressed and compacted; and the multi-point back-blowing device enables the resin to be washed and regenerated more thoroughly, so that the labor intensity is reduced.

The utility model discloses a kind of online detection devices for resin exchange, belong to water quality supervision field, a kind of online detection devices for resin exchange, including reaction mechanism, the rear end side of the reaction mechanism is fixedly connected with preparation mechanism, the inner end inboard of the preparation mechanism is fixedly installed with detection mechanism, the detection mechanism includes motor box, the upper end middle part of the motor box is movably installed with pivot, the upper end middle part of the pivot is fixedly connected with stirring rod, the upper end of the motor box is fixedly connected with stirring box, the upper end middle part of the stirring box is fixedly installed with reagent port, the front end middle part of the stirring box is provided with liquid inlet, the outer end side of the stirring box is fixedly connected with pipette, the tail end of the pipette is fixedly connected with liquid suction pump;The online detection device for resin exchange is provided with stirring rod, and the reagent and exchange liquid are stirred to make them mix quickly, improve the reaction efficiency, and improve the accuracy of detection when the device is used.

The utility model discloses an unattended monitoring device for mixed bed resin, which comprises a visual sensor, a micro sensor, a wireless signal transceiving processing module and a monitoring center, and the mixed bed comprises a first high-speed mixed bed and a second high-speed mixed bed, visual sensors are arranged on observation windows of the first high-speed mixed bed and the second high-speed mixed bed, wireless signal transceiving processing modules are arranged on the side walls, micro sensors are arranged on the bottom walls, and the visual sensors and the micro sensors are connected to the wireless signal transceiving processing modules through connecting wires. The wireless signal transceiving processing module comprises a wireless module and a signal processing module, and data collected by the visual sensor and the micro sensor are processed by the signal processing module and then transmitted to the monitoring center server through the wireless module. According to the utility model, a manual monitoring peephole is optimized into a visual and intelligent monitoring system, manual judgment on whether the resin bed fails and is put into operation is optimized into full-automatic intelligent identification judgment, and manual regeneration of failed resin is optimized into full-automatic intelligent regeneration.

The invention relates to a continuous ion exchange device and method for separating lithium and sodium in high-sodium lithium-containing wastewater, and the continuous ion exchange device comprises a resin column group which comprises three resin columns which are connected in series and in parallel and are filled with lithium-sodium separation resin, and the resin columns are sequentially connected in series to form a main series pipeline; the resin columns located at the head and the tail are connected to form a closed loop backflow pipeline, the resin column group forms an adsorption resin column group and a regeneration resin column group which move in sequence and operate circularly along the main series connection pipeline and the closed loop backflow pipeline, the adsorption resin column group comprises two resin columns, and the regeneration resin column group comprises one resin column. When a resin column of the adsorption resin group reaches a penetration point, the adsorption resin group is switched into a regeneration resin column group; the feeding pipeline is connected with one end of the resin group; and the discharging pipeline is connected with the other end of the resin group. Compared with the prior art, the lithium-sodium separation efficiency and the resin utilization rate are remarkably improved.

Water-softening device (1) of the present disclosure includes water-softening tank (4) that performs a water-softening treatment on raw water containing a hardness component with weakly acidic cation exchange resin (9) to generate acidic soft water, neutralization tank (5) that neutralizes a pH of the acidic soft water generated by passing through water-softening tank (4) with weakly basic anion exchange resin (10) to generate neutralized soft water, soft water detector (6) that detects an electrical conductivity of the neutralized soft water generated by passing through neutralization tank (5), acquisition unit (17) that acquires a first electrical conductivity corresponding to an ion other than the hardness component in the raw water, correction unit (18) that corrects the electrical conductivity of the neutralized soft water based on the first electrical conductivity acquired by acquisition unit (17) to output a second electrical conductivity, and calculator (19) that calculates hardness component information based on the second electrical conductivity.

The invention relates to the technical field of agriculture, in particular to an agricultural waste micro-aerobic fermentation liquid lactic acid separation system. Comprising a fermentation liquor supply tank, a resin column and a magnetic field generator, an outlet of the fermentation liquor supply tank is connected with an inlet of the resin column, and the fermentation liquor supply tank is configured to convey agricultural waste micro-aerobic fermentation liquor in the fermentation liquor supply tank to the resin column; the magnetic field generator is wound on the resin column and is configured to generate a pulsed magnetic field in the resin column so as to carry out oriented polarization on lactic acid in the agricultural waste micro-aerobic fermentation liquid in the resin column. The technical problem that in the prior art, the mass transfer resistance of lactate ions entering resin pore channels in agricultural waste micro-aerobic fermentation liquor is large is solved.

Methods of stabilizing virgin ion exchange resin material are provided. The methods include cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent. The methods include cleansing the virgin ion exchange resin material with a preparation comprising an alcohol solvent. The methods include rinsing virgin ion exchange resin material with deoxygenated water. the methods include introducing the cleansed / rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. The methods include introducing an oxygen scavenging material into the gas impermeable vessel, and hermetically sealing the vessel. A method of facilitating water treatment in a site in need thereof by providing a cleansed virgin ion exchange resin material in deoxygenated water is also disclosed.

There is disclosed a method and apparatus for improving lithium yield of lithium lithium- selective media in one or more packed-bed columns in a direct lithium extraction process. The method comprises the steps of a) passing the lithium-selective media and a stream of process fluid through a screening zone; and b) collecting a portion of lithium-selective media having a required particle-size distribution and / or free of contaminants.

The application relates to the technical field of ion exchange equipment and specifically discloses a device and method for removing air bubbles in an ion exchange column, which comprises a shell, multiple groups of ion exchange components and multiple gas-liquid separation pieces, the multiple groups of ion exchange components are arranged in the shell and are spaced apart along the axial direction of the shell, the gas-liquid separation pieces correspond to the ion exchange components one by one, each gas-liquid separation piece is arranged on the side of the ion exchange component close to a discharge port, the gas-liquid separation piece is umbrella-shaped, a separation cavity is formed between the gas-liquid separation piece and the ion exchange component, the top of the gas-liquid separation piece is connected with an exhaust pipe, the exhaust pipe extends to the outside of the shell, the gas-liquid separation piece comprises a body and a flow blocking part, the body is connected with the flow blocking part, a flow hole is formed in the body and is used for passing fluid, the normal projection of the flow blocking part on the body covers the flow hole, so that the gas phase can rise along the flow blocking part to the exhaust pipe and be discharged. The application can efficiently remove the air bubbles generated in the ion exchange process.

Water softener includes a soft water tank, a neutralization tank, bypass flow path that sends, as untreated water, raw water to a downstream side of the neutralization tank without passing the raw water through the soft water tank and the neutralization tank, mixer that mixes the untreated water sent from bypass flow path and the neutralized soft water sent from the neutralization tank to generate mixed water, flow rate adjustment unit that adjusts a supply amount of at least one of the untreated water and the neutralized soft water to mixer, and controller that controls a mixing ratio between the untreated water and the neutralized soft water by flow rate adjustment unit. Controller includes mixing ratio determination unit that determines the mixing ratio between the untreated water and the neutralized soft water based on instruction information related to at least one of a regeneration time during which a regeneration process can be performed and a water softening degree of the mixed water, and flow rate controller that adjusts the supply amount to be adjusted by flow rate adjustment unit such that the mixing ratio determined by mixing ratio determination unit is obtained.

The utility model relates to a desalting device for development of an epoxy diluent, which comprises a base, a mixing drum arranged at the upper end of the base, an end cover arranged at the top end of the mixing drum, a linkage sleeve rotationally arranged in the end cover, a rotating shaft arranged in the linkage sleeve, a fixed shaft arranged in the rotating shaft and rotationally connected with the linkage sleeve. The axis of the fixed shaft is perpendicular to the axis of the rotating shaft, a swing structure is arranged in the linkage sleeve, and a motor support is arranged at the top end of the end cover. The utility model relates to the technical field of epoxy diluent desalination. According to the desalting device for development of the epoxy diluent, a driving structure drives a rotating shaft to rotate, so that a storage barrel and stirring fan blades at the bottom end of the rotating shaft rotate in the storage barrel, and the epoxy diluent can enter the storage barrel through a through hole to be in contact with ion exchange resin; and separating out salt ions in the epoxy resin diluent through ion exchange resin.

The present invention relates to the technical field of xylose production, and particularly relates to a continuous decolorization system for xylose production and its usage method. Three decolorization resin columns are provided and connected in series through series columns pipelines. Metering pumps are installed on the feed main pipe, alkali inlet main pipe, acid inlet main pipe, and elution main pipe. Automatic control valves are installed on the feed pipelines, discharge pipelines, and series columns pipelines of each decolorization resin column. The metering pumps and the automatic control valves are connected to a PLC control system. By controlling the opening and closing time and sequence of each metering pump and the automatic control valve, a cycle process of primary decolorization, regeneration, and secondary decolorization of a single decolorization resin column can be realized, and an orderly series connection between multiple decolorization resin columns can be achieved, realizing a continuous and stable decolorization process of the xylose solution by the entire system. The present invention can completely replace activated carbon, improve the working environment, reduce solid waste pollution, relieve the environmental protection pressure, and achieve automated continuous operation, reduce the labor intensity of personnel, and reduce production costs.

The invention provides a method for removing residual metal in an acrylate polymer by a solid-liquid phase ion adsorption method. The method comprises the following steps: adding ion exchange resin into a chromatographic column, rinsing and compacting with a solvent, adding an acrylate polymer glue solution diluted with the solvent, collecting the chromatographic glue solution, repeating the chromatographic process for 1-3 times, concentrating and drying, thereby obtaining the product. The mass ratio of the ion exchange resin to the acrylate polymer glue solution is (0.1-10): 1; the mass ratio of the acrylate polymer glue solution to the solvent required for dilution is (0.25-4): 1. According to the method, the cation exchange resin is adopted to remove residual lithium and aluminum metal ions in the acrylate polymer, so that the operation difficulty is relatively low, and meanwhile, possible pollution sources are not additionally increased; the whole operation process is convenient and simple, the stability is high, the requirement for equipment is low, and residual lithium and aluminum metal ions in the block acrylate glue solution can be rapidly removed.

The application discloses a hypochlorous acid solution generating device based on automatic adjustment of displacement stroke of solution quantity, relates to the technical field of hypochlorous acid solution production, and is used for generating sodium hypochlorite solution into hypochlorous acid water. The hypochlorous acid solution generating device comprises a main body mechanism, a displacement mechanism, a pipeline adjusting mechanism and a liquid replacing mechanism. The main body mechanism and the displacement mechanism are connected. The main body mechanism and the pipeline adjusting mechanism are connected. The main body mechanism and the liquid replacing mechanism are connected. The displacement mechanism and the pipeline adjusting mechanism are connected. The displacement mechanism and the liquid replacing mechanism are connected. The main body mechanism comprises a workbench, an initial solution storage tank and a hypochlorous acid water storage tank. The initial solution storage tank is arranged on the workbench. The hypochlorous acid water storage tank is arranged on the workbench. The workbench is connected with the displacement mechanism. The workbench is connected with the pipeline adjusting mechanism.

The invention provides an ion exchange system and an ion exchange method. The ion exchange system comprises a feeding system, an ion exchange system and a separation system, the ion exchange method comprises the following steps: firstly, feeding through the feeding system, then carrying out ion exchange treatment on the molecular sieve by utilizing the ion exchange system, and completing multiple ion exchange operations under the cooperation of the separation system and the feeding system. The system can efficiently and quickly complete sodium type silicon aluminum molecular sieve ammonium ion exchange, and has the characteristics of wide application range of molecular sieve types, stable product quality, recoverable ammonium solution and the like.

The utility model discloses an ammonium rhenate purification and potassium removal device which comprises an exchange column shell, cover plates are installed at the upper end and the lower end of the exchange column shell through bolts, multi-interface connecting mechanisms are arranged at the ends, away from each other, of the upper cover plate and the lower cover plate, and a plurality of columnar storage boxes are arranged in the exchange column shell; the utility model belongs to the technical field of ammonium rhenate purification, and aims to solve the problems that if a plurality of interfaces are arranged in the prior art, the unused interfaces need to be sealed by customizing a sealing cover or a sealing element, and the sealing cover or the sealing element is easy to lose during subsequent switching. The pipeline connector has the advantages that the pipeline connector can be fixedly connected with pipelines of various specifications, the connecting range is wide, practicability is high, meanwhile, different connectors do not need to be sealed through corresponding sealing covers or sealing pieces, when the pipeline of another specification is switched to be connected, the sealing cover or the sealing piece does not need to be found, and operation is convenient. And the accident that the sealing cover or the sealing element is lost and cannot be found is avoided.

The invention discloses a suspension type continuous ion exchange device and system, and belongs to the technical field of ion exchange. The device comprises a rack, a driving system, a rotary distribution valve, a resin column and a connecting hose, and is characterized in that the resin column is suspended at the upper part of the rack through a turntable, and the rotary distribution valve is fixed above the center of the turntable; the driving system adopts a distribution valve driving motor and a turntable driving motor, and real-time synchronous control of the double motors is realized through a PLC (Programmable Logic Controller) control system; the connecting hose is restrained by the guide ring to prevent winding, and the resin column is of a fast-assembly structure and optimizes an internal flow channel. The device greatly reduces the occupied area through the vertical suspension layout, shortens the pipeline, reduces the operation energy consumption, solves the problems of inconvenient maintenance and phase out-of-step, is suitable for the industries of salt lake lithium extraction, pharmacy and the like, and has the characteristics of compact structure, reliable operation and wide process adaptability.

The invention relates to the technical field of ion exchange equipment, and particularly discloses a device and a method for removing bubbles in an ion exchange column, the device comprises a shell, a plurality of groups of ion exchange assemblies and a plurality of gas-liquid separation pieces, the plurality of groups of ion exchange assemblies are arranged in the shell and are arranged at intervals along the axial direction of the shell, and the gas-liquid separation pieces are arranged in the shell. The gas-liquid separation parts are in one-to-one correspondence with the ion exchange assemblies, each gas-liquid separation part is arranged on the side, close to the discharge port, of the corresponding ion exchange assembly, each gas-liquid separation part is in an umbrella shape, a separation cavity is formed between each gas-liquid separation part and the corresponding ion exchange assembly, the top of each gas-liquid separation part is connected with an exhaust pipe, and the exhaust pipes extend out of the shell; the gas-liquid separation part comprises a body and a flow blocking part, the body is connected with the flow blocking part, a flowing hole is formed in the body and used for allowing fluid to pass through, and the orthographic projection of the flow blocking part on the body covers the flowing hole so that the gas phase can rise to the exhaust pipe along the flow blocking part to be exhausted. The air bubbles generated in the ion exchange process can be efficiently removed.

Provided is a method for operating an up-flow ion exchange tower in which deionized water is produced by introducing raw water into an ion exchange tower having a packed bed of an ion exchange resin between a water-permeable separator on the lower side and a water-permeable separator on the upper side in an up-flow manner by means of a water supply pump, the method for operating an up-flow ion exchange column comprises: a fixed bed formation step in which raw water is introduced into the ion exchange column at a high linear velocity at the beginning of water introduction, and a packed bed of an ion exchange resin in the ion exchange column is pushed upward to form a fixed bed in which the raw water is introduced into the ion exchange column at a high linear velocity; a water-permeable separator pushed to the upper side of the packed bed to form a fixed bed of an ion exchange resin; and a stable operation step in which, after the fixed bed formation step, the raw water is passed through at a linear velocity greater than the minimum linear velocity for maintaining the fixed bed, and the amount of the raw water passed through is controlled in accordance with the required amount of deionized water.

A pre-filled syringe is disclosed, comprising a barrel and a plunger, the barrel having an outlet, the barrel containing a pharmaceutically acceptable solution having a non-physiological pH, wherein the syringe further comprises an ion exchange material. The ion exchange material is provided at a position to allow contact with the pharmaceutically acceptable solution upon ejection of the pharmaceutically acceptable solution from the barrel via the outlet. The ion exchange material is capable of adjusting the pH of the solution from a non-physiological pH, at which the pharmaceutically acceptable solution is stored in order to ensure acceptable shelf life, to a more physiological pH at which the discomfort and / or pain experienced during injection may be alleviated.

The invention relates to a method for purifying a target substance starting from a fluid to be treated which comprises at least one impurity. The method comprises treatment of a stream of the fluid to be treated using a chromatography step in a first separation unit, collection of a fraction enriched with the target substance in a first tank, and viral inactivation of the fraction enriched with the target substance. The viral inactivation comprises passing the fraction enriched with the target substance through a second separation unit, passing a viral inactivation solution through the second separation unit, mixing, and collecting the mixture in the second tank to obtain a fraction depleted of active virus. The method further comprises treatment of the fraction depleted of active virus using a chromatography step in the second separation unit and collection of a fraction more enriched with the target substance.

The invention discloses a soft water control valve and a control method thereof. A valve body shell of the soft water control valve is provided with a control valve water inlet, a control valve water outlet, a jet device water inlet, a jet device water outlet, a jet device water suction port, a salt suction port, a drain outlet, a resin barrel communicating port and a central pipe communicating port; the jet device is mounted outside a valve body through the jet device water inlet, the jet device water outlet and the jet device water suction port; a control cavity, a grid and a piston are arranged in the valve body shell, the control cavity comprises a water outlet grid area, a reverse flow salt suction grid area, a sewage discharge grid area, a forward flow salt suction grid area and a water inlet grid area, and a salt suction opening is communicated with a water suction opening of the jet device through a salt suction cavity. The salt suction pull rod moves in the salt suction cavity to control the connection and disconnection between the salt suction port and the water suction port of the jet device and the connection and disconnection between the salt suction port and the water inlet grid area; the working state of the soft water control valve comprises a countercurrent state and / or a downstream state. The soft water control valve is high in structural universality, and mode switching is easy and convenient; waterway layout is reasonable, and operation is stable and reliable.

The present invention relates to a method for producing high-purity arabinose crystals, which comprises sequential steps of dissolving, blending, ion exchange, decolorization filtration, microfiltration, evaporation concentration, crystallization, centrifugation, drying, etc. During the production of arabinose crystals, the pH of the material is controlled to 4.3-7.5 and the temperature to 70°C or lower, thereby avoiding a decrease in purity due to the promotion of conversion of arabinose to miscellaneous sugars at high temperatures, and improving the purity of the produced arabinose crystals.

Provided are an apparatus and a method for ion-exchange extraction of lithium from natural or technological brine by using a lithium-selective inorganic sorbent operating on a principle of an ion sieve. The apparatus contains a plurality of ion-exchange columns arranged and interconnected in sequence. Flows of the brine, flush water, acidic desorption solution, and outputs, of the processed products are controlled via switchable shut-off valves. The method can be carried out by operating the apparatus in a parallel or a serial mode of column operations. In the parallel mode, all columns work simultaneously in the same manner. In the serial mode of operation, the columns work individually with a shift of the sorption-flushing-desorption-flushing cycles sequentially and with a transfer of the processed brined sequentially from the first column to the last column and from the last column to the first one thus providing continuity of the lithium-extraction process.

The invention relates to the technical field of degraded sulfolane treatment, and discloses a degraded sulfolane dechlorination purification treatment method and a degraded sulfolane dechlorination purification treatment system.The method comprises the steps that the pH of degraded sulfolane is measured; when the pH value of the degraded sulfolane is less than or equal to 7, enabling the degraded sulfolane to sequentially flow through a first resin column and a second resin column; flowing the degraded sulfolane through a second resin column when the pH of the degraded sulfolane is greater than 7; wherein the first resin column is filled with weakly alkaline anion resin, and the second resin column is filled with strongly alkaline anion resin. According to the method, the degraded sulfolane selectively passes through the resin column filled with different anion exchange resins according to the pH value of the degraded sulfolane, the process route is flexible to regulate and control, the operation is simple, the regeneration period of the resin of the resin column can be obviously prolonged, and the wastewater discharge amount of resin regeneration is obviously reduced.