39 results about "Electrochemical adsorption" patented technology

The invention relates to an electrochemical gas separation cell (10, 10') for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture, said separation cell having an adsorption electrode (20, 20') comprising at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, a counter electrode (30, 30'), and a separator (40, 40') between the adsorption electrode (20, 20') and the counter electrode (30, 30'). In order to provide a new type of gas separation cell (10, 10') for separating a gaseous Lewis acid, in particular one which can be used for an electrochemical (potential) swing adsorption process or an electro(chemical) swing adsorption (ESA) process, a membrane (60, 60') is placed between the adsorption electrode (20, 20') and a feed chamber (50) for feeding the fluid mixture. The invention also relates to such a gas separation system and to a method for operating same.

The invention discloses an aerogel GCP composite electrode material, a preparation method thereof and application of the aerogel GCP composite electrode material in electro-adsorption recovery of rhenium. The composite electrode material is an aerogel GCP composite electrode material formed by compounding ginger carboxymethyl cellulose GCNF and polyaniline PANI. According to the preparation method, the natural structure of ginger cellulose and the conductivity and doping property of polyaniline are fully utilized, supramolecular compounding is carried out through hydrogen-bond interaction, then freeze drying is carried out, the graded porous conductive aerogel (GCP) with excellent electrochemical properties and adsorption performance is prepared, and the graded porous conductive aerogel has high adsorption capacity and higher adsorption rate on rhenium ions. And by combining an electrochemical technology, the performance of electric enhancement Re (VII) capture is researched, and the adsorption mechanism and basic theoretical research of electrochemical Re (VII) adsorption are enriched.

The invention relates to an electrochemical adsorption material and device for capturing carbon dioxide, the adsorption material is composed of an integrated cathode adsorption material, an integrated anode charge balance material and a gel electrolyte, the integrated cathode adsorption material is a polynaphthoquinone-carbon cloth composite material, and the integrated anode charge balance material is a polynaphthoquinone-carbon cloth composite material. The integrated anode charge balance material is a ferrocene-carbon cloth composite material, and the gel electrolyte is a polyion liquid-silicon dioxide gel electrolyte. The method has the advantages that the electrochemical adsorption material has the advantages of high activity (good adsorption performance), high stability (the performance is not reduced after long-term use) and the like, a matched device is modularized, easy to maintain and compact in size, auxiliary equipment is not needed, the capacity is not influenced by the feeding concentration, the purity of released CO2 can be close to 100%, efficient trapping of a wide-concentration CO2 gas source (0.6%-10%) is achieved, and the method is suitable for industrial production. Capturing efficiency and energy consumption control are both considered, and multi-scene application requirements are met.

This invention discloses a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms, its preparation method, and its application, belonging to the field of seawater uranium extraction technology. Ti3AlC2 powder is etched in an HCl-LiF mixed solution and then ultrasonically exfoliated to obtain Ti3C2T. x Nanosheet suspension; simultaneously, hexachlorocyclotriphosphazene, 4,4'-dihydroxydiphenyl sulfone, and cobalt salt were dissolved in a solvent, and triethylamine was added. A condensation reaction was then carried out under ultrasonication to obtain Co-PZS; then Ti3C2T x After the nanosheet suspension is uniformly mixed with Co-PZS and carbon fiber fabric, it is transferred to a hydrothermal reactor for hydrothermal reaction. The resulting hydrothermal reaction product is then dried and calcined to obtain a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms. This electrode is used for the electrochemical adsorption of uranyl ions in the solution system and exhibits excellent comprehensive uranium extraction performance, with advantages such as high capacity, fast rate, strong selectivity, and good stability, meeting the application requirements of seawater uranium extraction.

The invention relates to an electrochemical gas separation cell (10) for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture. In order to provide a new type of gas separation cell (10) for separating a gaseous Lewis acid, in particular one which can be used for an electrochemical (potential) swing adsorption process or an electro(chemical) swing adsorption (ESA) process, such process being in particular quasi-continuous, the cell (10) comprises a first (20) and a second (20') adsorption electrode each having at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, and a separator (30) between the first (20) and second (20') adsorption electrodes, and a first membrane (60) is placed between the first adsorption electrode (20) and a first feed chamber (50) for feeding the fluid mixture. The invention also relates to such a gas separation system and to a method for operating same.

The invention relates to an electrochemical gas separation cell (10, 10') for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture, said separation cell having an adsorption electrode (20, 20') comprising at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, a counter electrode (30, 30'), and a separator (40, 40') between the adsorption electrode (20, 20') and the counter electrode (30, 30'). In order to provide a new type of gas separation cell (10, 10') for separating a gaseous Lewis acid, in particular one which can be used for an electrochemical (potential) swing adsorption process or an electro(chemical) swing adsorption (ESA) process, a membrane (60, 60') is placed between the adsorption electrode (20, 20') and a feed chamber (50) for feeding the fluid mixture. The invention also relates to such a gas separation system and to a method for operating same.

The invention discloses a device and a method for treating heavy metal wastewater through electrochemical adsorption. The method comprises a working electrode, a counter electrode, an insulation isolation part, a fixed frame and a direct-current power supply, the working electrode is formed by coating a graphite paper substrate with a composite electrode material containing titanium dioxide (TiO2), ferroferric oxide (Fe3O4), conductive carbon black and polyvinylidene fluoride (PVDF); the counter electrode is made of pure graphite paper and is parallel to the working electrode; the insulating isolation part is arranged between the working electrode and the counter electrode; the fixed frame is used for fixing the working electrode, the counter electrode and the insulated isolation component; the direct-current power supply is connected with the working electrode and the counter electrode. The device is formed by arranging a composite electrode and a graphite paper counter electrode in parallel, isolating by a polytetrafluoroethylene gasket, fixing by an acrylic plate and externally connecting a direct-current power supply. The electrode adsorbs Cd < + > in electrolyte-containing wastewater. By combining the high adsorbability of TiO2, the magnetic recovery characteristic of Fe3O4 and a conductive network, the method has the advantages of high efficiency, stability and easiness in recovery.

The present invention relates to an electrochemical gas separation cell (10) for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture, in particular a gas mixture, containing the Lewis acid.To provide a new type of gas separation cell (10) for the separation of a gaseous Lewis acid, in particular one that can be used for, especially quasi-continuous, electrochemical (potential) swing adsorption (ESA), the cell (10) comprises a first (20) and a second (20') adsorption electrode, each with at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, and a separator (30) arranged between the first (20) and second (20') adsorption electrodes, wherein a first membrane (60) is arranged between the first adsorption electrode (20) and a first feed chamber (50) for supplying the fluid mixture. Furthermore, the invention relates to such a gas separation system and an operating method for it.

The present invention relates to a method of recovering lithium. More particularly, the present invention relates to a method of recovering lithium, including a step of obtaining a leachate, in which a lithium component is dissolved, from cathode material powder, and a step of purifying a lithium component by introducing the leachate into a flow capacitive deionization apparatus. According to the method of the present invention, by easily removing impurities from a leachate, in which a lithium component is dissolved from cathode material powder, through an electrochemical adsorption and desorption process, high-purity lithium may be recovered, and an eco-friendly benefit may be obtained by reducing an amount of wastewater generated. In addition, by simultaneously performing the purification and filtration of lithium, the process may be simpler than a conventional process, a continuous process is possible, and processing cost and energy may be reduced.

The present invention relates to an electrochemical gas deposition cell (10) for deposition of a gaseous Lewis acid, in particular carbon dioxide, which comprises an adsorption electrode (20) with at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid and a counterelectrode (30) with at least one electrochemically active material for charge equalization of the adsorption electrode (20). The at least one electrochemically active material of the adsorption electrode (20) and / or the at least one electrochemically active material of the counterelectrode (30) is applied to a carbon material.In order to provide electrochemical gas deposition cells (10) and their adsorption electrodes (20) and / or counter electrodes (30) with a high durability in a simple, cost-effective and series-production manner, in particular which can be used for electrochemical (potential) swing adsorption or electro(chemical) swing adsorption (ESA), the carbon material of the adsorption electrode (20) and / or the counter electrode (30) comprises graphite with a surface area of ​​< 80 m. 2 / g and / or soot with a surface area of ​​≥ 80 m 2 / g. Furthermore, the invention relates to corresponding manufacturing processes as well as electrode materials and electrodes (20,30).

The application discloses a preparation method of a functional carbon membrane and application of the functional carbon membrane in cesium ion separation, and belongs to the technical field of water treatment. The functional carbon membrane material is prepared by taking porous carbon membrane with good conductivity as a base film, loading iron-based oxide on the carbon membrane by using an electrochemical deposition method, and then growing Prussian blue particles in situ. The method can effectively control the loading amount of the Prussian blue particles on the carbon membrane and improve the combination stability between the Prussian blue particles and the carbon membrane. The functional carbon membrane is used for deep treatment of wastewater containing Cs + , and can realize integrated coupling of membrane adsorption and electrochemical adsorption functions. On one hand, the adsorption rate of cesium ions is improved, and the desorption regeneration process of the carbon membrane is simplified. On the other hand, real-time separation of the purified water body can be realized, and the functional carbon membrane has a wide application prospect.

The present invention relates to a lithium recovery method and, more specifically, to a lithium recovery method comprising the steps of: obtaining a leachate in which a lithium component is dissolved from positive electrode material powder; and purifying the lithium component by introducing the leachate into a flow-capacitive deionization device. According to the present invention, it is possible to provide a lithium recovery method that is eco-friendly by enabling high-purity lithium to be recovered and wastewater generation to be reduced by easily removing impurities through electrochemical adsorption and desorption processes from the leachate in which the lithium component is dissolved from the positive electrode material powder. In addition, since the purification and filtration of lithium are simultaneously performed, the process is simpler compared to the prior art and a continuous process is possible, thereby providing the method with reduced process costs and energy.

The invention discloses a preparation method for electrodepositing a phosphoric acid doped polypyrrole (PPy) / porous carbon (PC) material through a constant voltage method and an application of the phosphoric acid doped polypyrrole (PPy) / porous carbon (PC) material in electrochemical adsorption and recovery of indium in an acid leaching solution of a liquid crystal display (LCD). According to the phosphoric acid doped PPy / PC material, porous carbon coated on the surface of a graphite plate is used as an inorganic matrix, an inorganic-organic composite material mPPy / nH3PO4-PC is obtained through electro-deposition in a solution containing a pyrrole monomer and phosphoric acid with a constant voltage method, and due to the fact that the dosages of pyrrole and phosphoric acid are different during material preparation, the material shows different electro-adsorption effects; the electro-adsorption device adopts a two-electrode system, the material is used as an adsorption electrode, a carbon rod is used as a counter electrode, and an external voltage is applied through a constant-voltage power supply to electrically adsorb In (III) in a solution. The material disclosed by the invention has the characteristics of simplicity in preparation, high adsorption capacity, high adsorption speed, simplicity in operation and the like, thereby having very high application value.

The invention provides a method for recovering boron and lithium in wastewater through electrochemical-membrane concentration coupling, which comprises the following steps: S1, adjusting the pH value of wastewater containing boron and lithium to be alkaline to obtain lithium-boron wastewater after the pH value is adjusted; s2, performing primary reverse osmosis treatment on the lithium-boron wastewater after the pH value is adjusted to obtain primary RO concentrated water and primary RO fresh water; s3, carrying out secondary reverse osmosis treatment on the primary RO fresh water to obtain secondary RO concentrated water and secondary RO fresh water, returning the secondary RO concentrated water to S2, mixing the secondary RO concentrated water with the lithium-boron wastewater subjected to pH value regulation, and carrying out primary reverse osmosis treatment; s4, adjusting the pH value of the primary RO concentrated water to be acidic; and S5, carrying out boron and lithium separation on the primary RO concentrated water after the pH value is adjusted by adopting an electrochemical adsorption-separation technology to obtain a lithium-rich solution and a boron-containing solution. According to the method, efficient separation and recovery of lithium and boron can be achieved, and comprehensive recovery of lithium, boron and fresh water resources is achieved.

This invention discloses an electrochemical carbon membrane reactor and its operating process for removing cesium ions from water, relating to the field of cesium ion separation. The device mainly includes a functional carbon membrane anode, a functional carbon membrane cathode, a regulated power supply, a water pump, sensors, and a casing. During operation, the cesium-containing solution to be treated is pumped from the raw water tank to port A, entering the anode chamber. It then sequentially penetrates the carbon membrane anode and cathode, reaching the cathode chamber and finally flowing into the product water tank from port B, yielding treated water. This invention utilizes both the electrostatic repulsion of the carbon membrane anode and the electrochemical adsorption of the carbon membrane cathode as core processes to remove cesium ions from water. Furthermore, the device's performance can be restored and regenerated through periodic removal of the concentrate and electrode reversal. This process has the advantages of simple equipment, simple operation steps, low production cost, and high cesium ion removal rate, and can be applied to the effective separation and removal of cesium ions in industrial wastewater, salt lake water, nuclear wastewater, seawater, and other water bodies.

This disclosure provides a method for lithium extraction from brine by electrochemical adsorption and its application. The method includes: placing an electrode containing a low-lithium lithium ion carrier as the cathode electrode in the middle of the brine; adding a lithium ion adsorbent to the brine to enrich the lithium ions in the brine; centrifugally stirring the brine and energizing the electrode to obtain an electrode containing a lithium-rich lithium ion carrier. This disclosure utilizes a lithium ion adsorbent to enrich lithium ions in the brine pool, cleverly employing external force to move the lithium ion adsorbent material, transporting the lithium ion adsorbent to the vicinity of the electrode to form a lithium-rich region. This significantly shortens the distance from the lithium ions to the electrode, thereby improving lithium extraction efficiency and greatly saving extraction time.

The present invention relates to an electrochemical gas separation cell (10,10') for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture, in particular a gas mixture, containing the Lewis acid, which comprises an adsorption electrode (20,20') with at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, a counter electrode (30,30') and a separator (40,40') arranged between the adsorption electrode (20,20') and the counter electrode (30,30'). In order to provide a new type of gas separation cell (10,10') for the separation of a gaseous Lewis acid, in particular which can be used for electrochemical (potential) swing adsorption or electro-swing adsorption (ESA), a membrane (60,60') is arranged between the adsorption electrode (20,20') and a feed chamber (50) for supplying the fluid mixture.Furthermore, the invention relates to such a gas separation system and an operating method for it.

An electrochemical device for the reversible adsorption of gases, comprising an electrochemical stack (1) with an electrochemical cell (2), wherein the cell (2) includes an adsorption electrode (3) with an electrochemically active material for the reversible electrochemical adsorption of a gas, a counter electrode (4), and a separator (5) arranged between the adsorption electrode (3) and the counter electrode (4). The stack (1) has an inlet (15) for introducing a gas mixture and an outlet (16) for discharging the adsorbed gas or the processed gas mixture. A reference electrode (6) is arranged between the adsorption electrode (3) and the counter electrode (4). A voltage monitoring unit (12) is connected to the adsorption electrode (3), the counter electrode (4), and the reference electrode (6), wherein the voltage monitoring unit (12) maintains a first voltage (U). a) between the reference electrode (6) and the adsorption electrode (3) and a second voltage (U g ) measures between the reference electrode (6) and the counter electrode (4). The first voltage (U) differs. a ) and the second voltage (U g If the voltages deviate from each other beyond a predetermined level, the voltage monitoring unit (12) will issue an error message.

The invention relates to an electrochemical gas separation cell (10) for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture. In order to provide a new type of gas separation cell (10) for separating a gaseous Lewis acid, in particular one which can be used for an electrochemical (potential) swing adsorption process or an electro(chemical) swing adsorption (ESA) process, such process being in particular quasi-continuous, the cell (10) comprises a first (20) and a second (20') adsorption electrode each having at least one electrochemically active material for the reversible electrochemical adsorption of the Lewis acid, and a separator (30) between the first (20) and second (20') adsorption electrodes, and a first membrane (60) is placed between the first adsorption electrode (20) and a first feed chamber (50) for feeding the fluid mixture. The invention also relates to such a gas separation system and to a method for operating same.

The invention relates to an electrochemical gas separation cell (10) for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture, said separation cell having an adsorption electrode (20) comprising at least one electrochemically active material (21) for the reversible electrochemical adsorption of the Lewis acid, a counter electrode (30), and a separator (40) between the adsorption electrode (20) and the counter electrode (30). The aim of the invention is to provide a novel type of gas separation cell, in particular one which can be used for an electrochemical (potential)-swing adsorption process or an electro-swing adsorption (ESA) process. This is achieved in that the cell (10) has a proton-based charge equalization (H+) between the adsorption electrode (20) and the counter electrode (30). The invention also relates to such a gas separation system and to a method for operating same.

The utility model provides an oil fume filtering device and a range hood. The oil fume filtering device comprises a filtering pipeline, and an activated carbon block, a spray purification structure and an ionization purification structure which are arranged in the filtering pipeline. The activated carbon block and the spray purification structure are used for adsorbing and filtering oil fume entering the filtering flue based on a physical adsorption mode, and the ionization purification structure is used for adsorbing and filtering oil fume entering the filtering pipeline based on an electrochemical adsorption mode. In the scheme, the activated carbon block, the spray purification structure and the ionization purification structure are used for adsorbing oil fume based on a physical adsorption mode and an electrochemical adsorption mode respectively, so that the defects of large wind resistance and the like in a mode of adsorbing by purely adopting a plurality of activated carbon blocks in the prior art can be avoided; the oil smoke adsorption efficiency can be improved, and good circulation of airflow is guaranteed.

The invention relates to an electrochemical device for reversible adsorption of gases, comprising an electrochemical stack (1) having an electrochemical cell (2), wherein the cell (2) comprises an adsorption electrode (3) having an electrochemically active material for reversible electrochemical adsorption of a gas, a counterelectrode (4) and a separator (5) between the adsorption electrode (3) and the counterelectrode (4). The stack (1) has an inlet (15) for admitting a gas mixture and an outlet (16) for discharging the adsorbed gas or the processed gas mixture. There is a reference electrode (6) between the adsorption electrode (3) and the counterelectrode (4). A voltage monitoring unit (12) is connected to the adsorption electrode (3), the counterelectrode (4) and the reference electrode (6), wherein the voltage monitoring unit (12) measures a first voltage (Ua) between the reference electrode (6) and the adsorption electrode (3) and a second voltage (Ug) between the reference electrode (6) and the counterelectrode (4). If the first voltage (Ua) and the second voltage (Ug) are at variance beyond a defined extent, an error message is issued by the voltage monitoring unit (12).

The invention provides a carbon monoxide modified platinum catalyst, a preparation method and application, and particularly relates to a simple electrochemical adsorption method, carbon monoxide forms strong adsorption on the surface of platinum, the electronic structure and electrochemical properties of the surface of platinum are changed, and the carbon monoxide modified platinum catalyst is used as an oxygen reduction catalyst for improving the performance of electrocatalytic oxygen reduction to generate hydrogen peroxide. The method is green, efficient, simple in preparation process and suitable for any platinum catalyst, the prepared carbon monoxide modified platinum catalyst can remarkably improve the activity and selectivity of hydrogen peroxide generated through two-electron oxygen reduction, the hydrogen peroxide yield and Faraday efficiency are obviously improved, and the carbon monoxide modified platinum catalyst has good application prospects.

The present application relates to a kind of preparation method of chlorine removal electrode, electrochemical chlorine removal device and method, belong to water treatment technical field.Chlorine removal electrode is used for electrochemical adsorption removal of chlorine ion in water, its preparation method includes: preparation of chlorine removal nanomaterial, chlorine removal nanomaterial is the variable valence metal hydroxide or variable valence metal oxide of layered structure;Chlorine removal nanomaterial is mixed with conductive agent, adhesive, to obtain electrode material;Electrode material is coated on conductive substrate, to obtain chlorine removal electrode;Wherein, chlorine removal nanomaterial can make the chlorine ion in water electrochemical adsorption in chlorine removal electrode under the action of electric field, to remove the chlorine ion in water.Layered structure variable valence metal hydroxide or variable valence metal oxide is used as electrode material of chlorine removal electrode, not only low in cost, and the adsorption amount of chlorine ion is large, can effectively remove the chlorine ion in water.Chlorine ion is embedded and saturated after adsorption in chlorine removal electrode, can be regenerated, to realize recycling.

The utility model discloses an embodiment provides a kind of vibration descaling type cathode plate structure with insulating area and electrochemical adsorption vibration module, it is related to the technical field of electro-adsorption descaling technology.The cathode plate structure includes: cathode plate body, the cathode plate body is equipped with several insulating areas and non-insulating areas, the insulating area and the non-insulating area are sequentially alternately arranged along first direction and / or second direction, the insulating area is coated with insulating coating;Scale body adsorbed on cathode plate body falls off from the cathode plate body under the external vibration effect.Through the utility model, it solves the problem of low adsorption descaling efficiency, and then reaches the effect of improving adsorption descaling efficiency.

The invention discloses a method for separating potassium, rubidium and cesium in lithium precipitation mother liquor through extraction-electrochemistry combination, which comprises the following steps of: firstly, pretreating the lithium precipitation mother liquor, adjusting the pH value of the lithium precipitation mother liquor to be alkaline, and adding a potassium stabilizer to be complexed with potassium ions in the lithium precipitation mother liquor to obtain a solution A; performing cesium extraction on the solution A to obtain a cesium-extracted organic phase and raffinate containing potassium and rubidium; performing electrochemical adsorption by taking the raffinate containing potassium and rubidium as an electrolyte and taking a rubidium ion selective electrode active material as a working electrode to obtain a rubidium-containing adsorption sample and a potassium-containing complex after-adsorption solution; finally, the rubidium-containing adsorption sample is desorbed, and the cesium-extracted organic phase is subjected to reverse extraction, so that effective separation of the rubidium-containing adsorption sample, the cesium-extracted organic phase and the cesium The separation method disclosed by the invention can effectively improve the separation efficiency of K < + >, Rb < + > and Cs < + > aiming at a specific lithium precipitation mother liquor system with high potassium ion concentration and low-content rubidium ions and cesium ions, and can effectively avoid the loss of Rb < + > and Cs < + > and improve the purity of Rb < + > and Cs < + > in the separation process; in addition, the separation method can greatly reduce the use amount of the extraction agent and the acid-base.

The invention discloses a system and a method for bypass treatment of internal cooling water by using an electrochemical method, and belongs to the technical field of internal cooling water treatment, the system comprises an electrochemical treatment device, a direct current power supply and a bypass circulation pipeline; the electrochemical treatment device comprises an anode chamber and a cathode chamber which are isolated from each other; the anode chamber is filled with anode filler as a working electrode, and the cathode chamber is filled with cathode filler as a counter electrode; the anode of the direct-current power supply is connected with the anode chamber, and the cathode of the direct-current power supply is connected with the cathode chamber; the bypass circulation pipeline enables the generator internal cooling water system and the electrochemical treatment device to form a circulation loop; the anode filler is a charcoal-based porous structure anode active material; the cathode filler is a charcoal-based cathode composite adsorption material; cO2 in the internal cooling water is electrochemically adsorbed and fixed in the anode chamber, and Cu < 2 + > in the internal cooling water is synchronously removed in the cathode chamber through electrodeposition and complexation. CO2 and Cu < 2 + > in the internal cooling water are directly removed through an electrochemical method, and copper corrosion of the internal cooling water is effectively inhibited.

The utility model relates to the technical field of aquaculture tail water treatment, in particular to a tail water treatment device which comprises a floating plate and a box body arranged at the top of the floating plate, one end of the box body is provided with a water inlet, the water inlet is provided with a water suction pump externally connected with a power supply, the other end of the box body is provided with a water outlet, and a first one-way guide plate is arranged in the box body. The first one-way flow guide plate and one end of the box body form an electrochemical adsorption area communicated with the water inlet, the first one-way flow guide plate and the other end of the box body form an algal-bacterial symbiotic area, the algal-bacterial symbiotic area is divided into a cation reaction area, a liquid storage area and an anion reaction area through two partition plates, and two liquid storage tanks are arranged in the liquid storage area between the two partition plates; the two liquid storage tanks are respectively communicated with the cation reaction area and the anion reaction area, and the cation reaction area and the anion reaction area are respectively communicated with the water outlet. According to the tail water treatment device, electrochemical adsorption and bacteria-algae adsorption are combined to treat tail water, so that the tail water treatment efficiency and treatment effect are improved.

The present invention relates to an electrochemical gas separation cell (10) for separating a gaseous Lewis acid, in particular carbon dioxide, from a fluid mixture containing the Lewis acid, in particular a gas mixture, which comprises an adsorption electrode (20) with at least one electrochemically active material (21) for the reversible electrochemical adsorption of the Lewis acid, a counter electrode (30), and a separator (40) arranged between the adsorption electrode (20) and the counter electrode (30). In order to provide a new type of gas separation cell, in particular one which can be used for electrochemical (potential) swing adsorption or electro(chemical) swing adsorption (ESA), the cell (10) has a proton-based charge equalization (H +) between the adsorption electrode (20) and the counter electrode (30). Furthermore, the invention relates to such a gas separation system and an operating method therefor.

The invention relates to a device for relieving reverse osmosis of forward osmosis salt and membrane pollution in situ by utilizing a capacitive deionization technology and a use method, and relates to the technical field of membrane filtration. Comprising a raw material liquid chamber, a draw liquid chamber, a forward osmosis membrane and a fluid circulation system, and the raw material liquid chamber and the draw liquid chamber are separated through the forward osmosis membrane; a capacitive deionization assembly is arranged in the draw solution chamber; and the fluid circulating system is respectively communicated with the raw material liquid chamber and the draw liquid chamber. In order to solve the inherent problems of salt reverse osmosis of the draw solution and membrane pollution in the forward osmosis technology, the invention proposes to carry out electrochemical adsorption on solutes in the draw solution in situ by utilizing a capacitive deionization (CDI) technology, and solves the problems of reduction of the efficiency of the draw solution caused by salt reverse osmosis and attenuation of water flux caused by membrane pollution in the existing forward osmosis technology. Salt reverse osmosis inhibition and membrane pollution alleviation are realized in situ.