19results about "Electric regeneration" patented technology

The invention discloses a hydrogen conductivity electric regeneration ion exchange system, and relates to the field of hydrogen conductivity. The hydrogen conductivity electric regeneration ion exchange system comprises an EDI module main body, a sample injection valve, a filter, a measuring cell and a flow meter. According to the hydrogen conductivity electro-regeneration ion exchange system, a detected water sample enters the EDI module main body, cations are exchanged into hydrogen ions under the exchange action of cation exchange resin, the anode is subjected to an oxygen evolution reaction to generate the hydrogen ions, and the generated hydrogen ions move towards the cathode under the action of an electric field; in the operation process, the system continuously carries out cation adsorption-regeneration, the advanced electrodeionization technology is adopted, the cations in water vapor are efficiently removed, automatic regeneration of the EDI resin is achieved, dynamic balance is maintained, and manual regeneration of the resin is not needed.

The utility model provides a sample water control system for a hydrogen conductivity measuring system, which comprises a main electric regeneration ion exchanger and a standby electric regeneration ion exchanger which are arranged in parallel, the main electric regeneration ion exchanger and the standby electric regeneration ion exchanger are respectively connected with a chemical sampling water pipeline, an electromagnetic valve is arranged between the electric regeneration ion exchanger and the chemical sampling water pipeline, and the rear side of the electric regeneration ion exchanger is sequentially connected with a flow transmitter, a pressure transmitter and a first electric control valve; and the first electric control valve is connected with the hydrogen conductivity meter. According to the utility model, the two electric regeneration ion exchangers are used for replacing traditional cation exchange resin, and when a control system judges that the measured value of the hydrogen conductivity instrument exceeds the standard or the change speed of the measured value exceeds the limit, the standby electric regeneration ion exchanger is automatically switched to operate; and judging whether the ion exchanger fails or the water quality exceeds the standard according to the actual situation.

The present invention provides a method for resource utilization of circulating cooling water wastewater from thermal power plants, belonging to the field of environmental protection technology. The method first involves softening the circulating cooling water with lime-soda to remove temporary calcium and magnesium ions, and then transferring the resulting softened sludge to a desulfurization system for use as a desulfurizer. The effluent from the lime-soda softening process is then passed through an ultrafiltration system to further remove suspended solids, producing ultrafiltration product water. The ultrafiltration concentrate and backwash effluent are then recycled to the front end of the lime-soda softening process for solid-liquid separation. The ultrafiltration product water is then passed through a sulfate adsorption device. The adsorption filtrate is then concentrated through reverse osmosis, and the reverse osmosis product water is recycled to the circulating cooling water system. The reverse osmosis concentrate is then passed through a bipolar membrane system to produce hydrochloric acid and sodium hydroxide solution. After the sulfate adsorption device is saturated, a portion of the reverse osmosis concentrate is introduced into the sulfate adsorption device, and the desorbed liquid is recycled to the desulfurization system. The sulfate ions in the desorbed liquid combine with the calcium ions in the desulfurizer to form gypsum. This method minimizes acid and alkali consumption and waste salt production in thermal power plants.

The invention discloses an electric regeneration polishing mixed bed for preparing ultrapure water, the electric regeneration polishing mixed bed comprises a polishing mixed bed body, an electric regeneration unit and a monitoring system are integrated in the polishing mixed bed body, the electric regeneration unit comprises an electrode and an ion exchange membrane, and an adsorption-regeneration closed loop system is formed; a multi-parameter on-line sensor is integrated in the monitoring system, so that the quality of effluent is monitored in real time, and the resin adsorption saturation is dynamically judged. Compared with the prior art, the electro-regeneration polishing mixed bed for preparing the ultrapure water has the advantages that various impurities, ions and the like in water can be effectively removed, high-quality ultrapure water is provided for related industries, and the water use requirement in the production, research and development process of the ultrapure water is met.

A process for battery chemical production, where a sodium sulfate stream is treated with an ion exchange process to provide potassium sulfate and sodium chloride. The sodium chloride may be treated with a chlor-alkali to produce sodium hydroxide for use upstream in the battery chemical production process.

The application relates to an on-line monitoring device for degassing hydrogen conductivity of an electrodeionization system, which comprises a flow monitoring system, an electrodeionization system (4), a degassing heat exchange system (8), an on-line conductivity monitoring system (10) and a waste water and waste gas collecting system (9). The flow monitoring system is used for collecting sample water flow signals, realizing power supply and heating control of the electrodeionization system and the degassing heat exchange system. The electrodeionization system is used for replacing a traditional ion exchange column to remove cations in sample water and realizing continuous electric regeneration of resin. The degassing heat exchange system is used for degassing, heat exchange and cooling of sample water. The on-line conductivity monitoring system comprises a specific conductivity measuring module, a hydrogen conductivity measuring module, a degassing hydrogen conductivity measuring module, a control module, a memory and a display. The specific conductivity measuring module, the hydrogen conductivity measuring module and the degassing hydrogen conductivity measuring module are respectively used for specific conductivity measurement, hydrogen conductivity measurement and degassing hydrogen conductivity measurement. The control module is used for controlling the degassing temperature. The memory and the display are respectively used for data storage and display. The waste water and waste gas collecting system is used for collecting cooled waste water and waste gas and centrally performing waste water and waste gas treatment. The application further discloses a monitoring method.

To provide a water softening device that enables efficient regeneration of ion exchange resins. [Solution] The water softening device comprises a water softening chamber 209 that generates softened water, a neutralization chamber 210 that neutralizes the softened water, an inner circumferential diaphragm 215, a water intake section 203 that introduces raw water, a water supply section 204 that supplies the neutralized softened water to the outside, a first electrode 201, and a second electrode 202. Furthermore, the water softening chamber 209, the inner circumferential diaphragm 215, the neutralization chamber 210, and the water supply section 204 are arranged in the order of the water intake section 203 having a central axis perpendicular to the bottom surface of the water softening chamber 209, and outward in the direction of the outer circumference of a circle centered on the central axis. The weakly acidic cation exchange resin 213 includes a first weakly acidic cation exchange resin 213a and a second weakly acidic cation exchange resin 213b that has a higher acidity dissociation constant than the first weakly acidic cation exchange resin 213a. The first weakly acidic cation exchange resin 213a is located closer to the first electrode 201 than the second weakly acidic cation exchange resin 213b.

To provide a water softener capable of suppressing wastewater discharge during regeneration and efficiently regenerating resin.SOLUTION: A water softener includes a water softening chamber 209, a neutralization chamber 210, a diaphragm, a first electrode 201 surrounded with a weakly acidic cation exchange resin 213 in the water softening chamber 209, a second electrode 202 surrounded with a weakly basic anion exchange resin 214 in the neutralization chamber 210, and a control unit 110. The control unit 110 executes a water softening process in which water to be treated is made to pass through a lower part of the water softening chamber 209, the water softening chamber 209, and the neutralization chamber 210 in this order to obtain soft water, a regeneration process in which ion exchange resin is regenerated, a cleaning process to remove cations and anions released by the regeneration process from the water softening chamber 209 and the neutralization chamber 210, and an electrode cleaning process for dissolving solids that have adhered to a surface of the second electrode 202 in the regeneration process during or after the regeneration process.SELECTED DRAWING: Figure 1

A water softening device (100) comprises: a water softening chamber (201) that has a weakly acidic cation exchange resin (101) and generates soft water from raw water containing a hardness component; a neutralization chamber (202) that has a weakly basic anion exchange resin (102) and neutralizes soft water; a diaphragm that separates between the water softening chamber (201) and the neutralization chamber (202) so that soft water can flow therethrough; a first electrode (103) that acts as an anode during regeneration of the weakly acidic cation exchange resin (101); and a second electrode (104) that acts as a cathode during regeneration of the weakly basic anion exchange resin (102). The first electrode (103) is provided so as to be surrounded by the weakly acidic cation exchange resin (101) in the water softening chamber (201), and the second electrode (104) is provided so as to be surrounded by the weakly basic anion exchange resin (102) in the neutralization chamber (202).

An energy efficient and environmentally benign lithium recovery process is described. The process comprises extracting lithium from the brine source using a ion withdrawal process to form a lithium extract; providing electricity for the extracting using an energy source; and recovering thermal energy from the energy source for use in the extracting.

An electroreductive and regenerative system includes an electrochemical reduction reactor having a housing and a reactor inlet. A cathode and an anode are disposed at least partially within a fluid flow-path. A spent ion-exchange resin slurry delivery inlet is fluidly connected to the reactor inlet. The spent ion-exchange resin slurry delivery inlet is connected to a source of spent ion-exchange slurry. A method of concurrently electroreductively remediating poly- and perfluorinated alkyl substances (PFAS) and regenerating an ion-exchange resin material includes providing an electrolyte-containing spent ion-exchange resin slurry, the spent ion-exchange resin slurry comprising a plurality of PFAS molecules immobilized on a surface of an ion-exchange resin material in the electrolyte containing spent ion-exchange resin slurry, and directing the electrolyte-containing, spent ion-exchange resin slurry through an electrochemical reduction reactor to remediate PFAS and form regenerated ion-exchange resin material in a regenerated ion-exchange material slurry.

Aiming at the problems of high cost and tedious procedures of a method for reducing the content of metal impurities in perfluorinated sulfonic acid resin in the prior art, the invention provides a method for reducing the content of metal ions in perfluorinated sulfonic acid resin, which comprises the following steps: dissolving perfluorinated sulfonic acid resin in a solvent to obtain a mixed solution; filtering the mixed solution to obtain a perfluorinated sulfonic acid resin dispersion liquid, and diluting the perfluorinated sulfonic acid resin dispersion liquid; and electrolyzing the diluted perfluorinated sulfonic acid resin dispersion liquid, and then performing post-treatment to obtain a purified perfluorinated sulfonic acid resin solution.

Water softening system includes water softening tank, neutralization tank, electrolysis tank, and treatment tank. Water softening tank softens raw water containing a hardness component with weakly acidic cation exchange resin. Neutralization tank neutralizes a pH of soft water that has flowed through water softening tank with weakly basic anion exchange resin. Electrolysis tank generates acidic electrolyzed water for regenerating weakly acidic cation exchange resin of water softening tank and alkaline electrolyzed water for regenerating weakly basic anion exchange resin of neutralization tank. Treatment tank mixes the acidic electrolyzed water that has flowed through water softening tank and the alkaline electrolyzed water that has flowed through neutralization tank, and supplies the mixture of the acidic electrolyzed water and the alkaline electrolyzed water to electrolysis tank.

Some embodiments are directed to a system for extracting carbon dioxide from a fluid. The system can include a fluid source and a reactor. The reactor can include one or more chambers, and each chamber can include one or more monoliths for adsorbing carbon dioxide from the fluid. The chambers can be alternatively unsealed for a contacting mode and sealed for a regeneration mode. A power source can provide an electric current to the monoliths to release carbon dioxide adsorbed by the monoliths. Each chamber can include an array of monoliths. Each monolith can include a sorbent that adsorbs carbon dioxide from fluid. The system can include modular components such that the number of reactors can be increased or decreased.

To provide a water softener capable of suppressing waste water on regeneration and efficiently regenerating resin.SOLUTION: A water softener 100 includes a water softening chamber 201 that has a weakly acidic cation-exchange resin 101 and generates soft water from raw water containing a hardness component, a neutralization chamber 202 that has a weakly basic anion-exchange resin 102 and neutralizes soft water, a barrier membrane that partitions between the water softening chamber 201 and the neutralization chamber 202 in a manner enabling conduction of soft water, a first electrode 103 that acts as an anode on regeneration of the weakly acidic cation-exchange resin 101, and a second electrode 104 that acts as a cathode on regeneration of the weakly basic anion-exchange resin 102. The first electrode 103 is provided in the water softening chamber 201 and surrounded with the weakly acidic cation-exchange resin 101. The second electrode 104 is provided in the neutralization chamber 202 and surrounded with the weakly basic anion-exchange resin 102.SELECTED DRAWING: Figure 1

A water softening device (100) is provided with: a water softening chamber (201) having a weakly acidic cation exchange resin (101) and generating soft water from raw water containing a hard component; a neutralization chamber (202) that has a weakly alkaline anion exchange resin (102) and neutralizes the soft water; a diaphragm that partitions between the water softening chamber (201) and the neutralization chamber (202) such that soft water can pass therethrough; a first electrode (103) that functions as an anode during regeneration of the weakly acidic cation exchange resin (101); and a second electrode (104) that functions as a cathode during regeneration of the weakly alkaline anion exchange resin (102). The first electrode (103) is provided in the water softening chamber (201) so as to be surrounded by a weakly acidic cation exchange resin (101), and the second electrode (104) is provided in the neutralization chamber (202) so as to be surrounded by a weakly alkaline anion exchange resin (102).

The application discloses a device and system for electrically regenerating exhausted ion exchange resin, which comprises a membrane stack, cathode and anode zone assemblies on both sides of the membrane stack, and a fastening mechanism for compactly fixing the membrane stack and the zone assemblies. The membrane stack is arranged in the order of anode membrane, resin frame plate, cathode membrane, and concentrated water partition plate from the end of the cathode zone assembly to the end of the anode zone assembly, and finally ends with anode membrane, resin frame plate, and cathode membrane; the middle area of the resin frame plate is provided with a plurality of cavities penetrating through the front and back surfaces and parallel to each other, and the cavities and the membranes on both sides form regeneration chambers, and the non-penetrating areas between adjacent regeneration chambers are used as support strips; resin inlet and outlet flow channels and fresh water inlet and outlet flow channels are independently arranged in each regeneration chamber of the resin frame plate, and the resin inlet and outlet flow channels and the fresh water inlet and outlet flow channels are independent of each other. The system comprises two or more than two devices and auxiliary facilities arranged in parallel. The device is convenient for large-scale production and does not need to be disassembled during the process of loading and discharging resin.

To provide a water softener enabling efficient regeneration of resin.SOLUTION: A water softener 100 includes: a water softening chamber 209; a neutralization chamber 210; an inner peripheral side diaphragm 215; a water conveyance part 203 located at the inner periphery of the water softening chamber 209 and supplying raw water to the water softening chamber 209; a water supply part 204 supplying neutralized soft water generated in the neutralization chamber 210 to the outside; and a control part 110. The control part 110 executes: a water softening process of making the raw water flow in from the water conveyance part 203 and conducting water to the water softening chamber 209 and the neutralization chamber 210 in this order to obtain the neutralized soft water; a regeneration process of regenerating a weakly acidic cation-exchange resin 213 using hydrogen ions; and a drainage process of discharging cation discharged from the weakly acidic cation-exchange resin 213 by the regeneration process from the water softening chamber 209, and discharging the anion emitted from a weakly basic anion-exchange resin 214 from the neutralization chamber 210. In the drainage process, the water containing the cation is drained from the water conveyance part 203.SELECTED DRAWING: Figure 2

The invention regards a deionization device for at least partially deionizing a feed liquid in which at least one electrolyte is dissolved, the device comprising: at least one process channel (12) having a feed inlet configured for receiving the feed liquid, and a feed outlet configured for discharging the deionized feed liquid, such that the process channel comprises a feed liquid flow (L), one or more collector channel(s) (14,140,141,142) configured for collecting the anions and cations separated from the feed liquid, an electrolyte outlet (15) configured for discharging the collected anions and cations, at least one channel electrode (131), at least one separating electrode (132), and at least one collector electrode (133), wherein the channel electrode and the separating electrode are placed at opposite sides of the process channel, and wherein the separating electrode and the collector electrode are placed at opposite sides of the collector channel(s), a field generator (13) for generating an electric and / or magneticfield between the channel electrode and separating electrode, and between the separating electrode and the collector electrode, wherein the field is variable and a ion flow is generated from the process channel to the collector channel(s) aand the ion flow direction is the same for anions and cations.