2005 results about "Active carbon" patented technology

The present invention pertains to the technical field of phase-change temperature-reducing materials, and in particular, relates to a phase-change temperature-reducing polyurethane composite material, and a preparation method and application thereof, comprising the following parts by mass of raw materials: 50-80 parts of polyurethane material A+polyurethane material B, 1-3 parts of flake graphite powder with a particle size of 850-1200 meshes, 0.8-1.8 parts of vermicular graphite with a particle size of 10-40 meshes, 10-30 parts of phase-change paraffin, 1-3 parts of activated carbon, 0.5-2 parts of catalyst, and 0.2-1 parts of co-catalyst. The polyurethane composite material made in the present invention is rapid in phase-change temperature reduction, high in heat absorption and dispersion, and free of problems of phase-change paraffin leakage, crystallization, and frosting on the surface thereof. At the same time, it also has softness and high elasticity, and can be widely applied to objects in contact with human bodies. A temperature difference is formed by reducing the temperature of the surface in contact with skin, which can bring a comfortable sense of coolness and a temperature-reducing effect to consumers.

The invention provides a low-cost metal modified electrode material, a preparation method and application, solves the problems that a carbon nitride material is difficult to recover and poor in sustainability, and improves the photoelectrocatalysis capability of an active carbon material. Further constructing a packed bed cathode coupled microbial fuel cell system; the treated industrial wastewater is high-salt coking wastewater from Anshan steel, a PEC-MFC system filled with electrogenesis microorganisms is used for realizing wastewater recycling and harmlessness, and energy-saving, high-efficiency and one-step treatment of the industrial wastewater is completed.

A supercapacitor including a gel electrolyte and two electrodes having a substrate, date stone activated carbon, a conductive carbon compound different from the date stone activated carbon, and a binding compound. A mixture of the date stone activated carbon, the conductive carbon compound, and the binding compound partially coats a surface of the substrate. The two electrodes are assembled in a symmetrical layered configuration with the surfaces coated with the mixture facing each other. The gel electrolyte is present between the surfaces coated with the mixture to form the supercapacitor. The gel electrolyte is a mixture of H2SO4, polyvinyl alcohol, and anthraquinone. Particles of the date stone activated carbon have a nanosheet morphology, and the nanosheets are stacked on top of each other to form a hierarchical structure.

The invention relates to the technical field of activated carbon materials, and discloses an activated carbon material for adsorbing organic gas and a preparation method thereof.The preparation method includes the steps that activated carbon powder, epoxidized cardanol, graphene oxide modified quaternized chitosan, bentonite and nanometer titania are added into grinding equipment to be ground, and a primary material A is obtained; and then continuously adding a water-borne epoxy resin adhesive and water, stirring and drying to obtain the active carbon material for adsorbing the organic gas. Chitosan in the silane modified chitosan structurally contains amino, hydroxyl and other polar groups, so that organic gas can be adsorbed; the graphene also has a relatively good adsorption effect on organic gas, and meanwhile, the agglomeration effect of the graphene is reduced; and siloxane and quaternary ammonium salt groups contained in the adsorbent also have a relatively good adsorption effect on organic gases. Cardanol in epoxidized cardanol contains functional groups such as benzene rings, phenolic hydroxyl groups and long-chain alkanes, and the functional groups endow the cardanol with various reaction activities and can absorb organic gas.

The invention relates to a functional microorganism-containing organic-inorganic compound fertilizer and a production method thereof, and relates to the technical field of fertilizers, the functional microorganism-containing organic-inorganic compound fertilizer comprises an inorganic core layer, an organic coating layer and a functional microorganism outer layer, the functional microorganism outer layer comprises the following components in parts by mass: 10-15 parts of compound functional microorganisms, 5-10 parts of synergistic growth-promoting microorganisms, 2-3 parts of trehalose, 1-2 parts of mannitol, 10-15 parts of sodium alginate, 8-10 parts of chitosan, 2-4 parts of a yeast extract and 30-40 parts of a modified activated carbon carrier. The production method comprises the following steps: preparing an inorganic core layer, preheating the inorganic core layer, and spraying and coating an organic coating layer material to obtain a primary product with an organic coating layer; and coating the surface of the organic coating layer of the primary product with a functional microorganism outer layer material, drying at low temperature, and screening to obtain the organic-inorganic compound fertilizer containing the functional microorganisms. The fertilizer has the effect of improving the slow release effect of the fertilizer and the survival rate of microorganisms.

The invention discloses a novel mercaptan removal catalyst as well as a preparation method and application thereof, the catalyst takes potassium-containing solution modified activated carbon as a carrier and one or a combination of more of CH3COOCs, CH3COOK, Cs2CO3 and Rb2CO3 as an active component, and the mass ratio of the active component substance to the modified activated carbon is 3-5%. The preparation method comprises the following steps: (1) modifying activated carbon by using a potassium-containing solution with the concentration of 15-20%, soaking the activated carbon for 2-4 hours by using the potassium-containing solution, then cleaning the activated carbon by using deionized water until the pH value is weakly alkaline, and drying the activated carbon for later use; (2) carrying out vacuum drying on the modified activated carbon at a certain temperature, and dipping a certain amount of active component-containing solution at 20-60 DEG C for 4-12 hours; and (3) carrying out vacuum drying on the active carbon impregnated with the active component, and roasting under the protection of N2 to obtain the mercaptan removal catalyst. The preparation method is simple, the prepared mercaptan removal catalyst has the characteristics of large specific surface and pore volume and the like, and compared with existing patents, the mercaptan removal catalyst is more favorable for maintaining the active center of the catalyst, maintaining the activity stability of the catalyst and improving the mercaptan removal rate.

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention belongs to the technical field of high-purity gas preparation and catalysis, and discloses a copper-iron double-component composite catalyst for removing trace acetylene and ethylene in petrochemical byproduct hydrogen chloride gas to prepare electronic grade hydrogen chloride gas, and a preparation method of the copper-iron double-component composite catalyst comprises the following steps: immersing activated carbon in hydrochloric acid; washing the activated carbon carrier with deionized water until the pH is neutral, and drying to obtain the pretreated activated carbon carrier; and impregnating the active component on the pretreated active carbon carrier, carrying out ultrasonic-assisted impregnation, standing, and drying, thereby obtaining the product, the active components are Fe metal salt and Cu metal salt. According to the method, trace acetylene and ethylene in the petrochemical byproduct hydrogen chloride gas are catalyzed to react with the hydrogen chloride gas at the same time, so that acetylene and ethylene are removed at the same time, and the acetylene and ethylene removal step in the existing hydrogen chloride purification process is simplified. Compared with a traditional method, the reaction efficiency of preparing the electronic-grade hydrogen chloride gas is remarkably improved.

The invention discloses a preparation method of a graphene reinforced copper composite material, and belongs to the technical field of composite material preparation. According to the preparation method, high-activity carbon quantum dots are adopted and are dissolved in a solution, subjected to ultrasonic treatment and activated, iodine and copper powder are added at the same time, uniform stirring and freeze drying are conducted, a carbon source and nucleation sites are uniformly adsorbed to the surface of the copper powder of a complex microstructure, then the carbon source and the nucleation sites are catalyzed by iodine, and graphene grows in situ at low temperature; graphene / copper composite powder which is good in coating, uniform in structure and tight in combination is prepared, then the graphene reinforced copper composite material which is continuous in structure and strong in interface combination is prepared through sintering forming, the carrier and load transmission capacity of the composite material is improved by means of evenly-coated graphene with the large specific surface area, electricity, heat and force transmission is facilitated, and the composite material has the good application prospect. The conductivity of the composite material reaches up to 90-100.8% IACS, the tensile strength reaches 207-263 MPa, the thermal diffusion coefficient reaches 101.8-120.8 mm < 2 > / s, the comprehensive performance is superior to that of pure copper, and the method is simple in process and easy to produce.

The application relates to an organic-inorganic compound fertilizer containing functional microorganisms and a production method thereof, and relates to the technical field of fertilizers. The fertilizer comprises an inorganic core layer, an organic coating layer and a functional microorganism outer layer. The functional microorganism outer layer comprises the following components in mass fractions: 10-15 parts of compound functional microorganisms, 5-10 parts of synergistic growth-promoting microorganisms, 2-3 parts of trehalose, 1-2 parts of mannitol, 10-15 parts of sodium alginate, 8-10 parts of chitosan, 2-4 parts of yeast extract and 30-40 parts of modified active carbon carriers. The production method comprises the following steps: preparing the inorganic core layer, preheating the inorganic core layer, spraying the organic coating layer material to coat the surface, and obtaining a preliminary product with the organic coating layer; coating the functional microorganism outer layer material on the surface of the organic coating layer of the preliminary product, low-temperature drying and screening, and obtaining the organic-inorganic compound fertilizer containing the functional microorganisms. The application has the effects of improving the slow-release effect of the fertilizer and the survival rate of the microorganisms.

A composition for reducing the concentration of cyanuric acid and other contaminants in treated recreational water, including swimming pools and other recreational bathing structures, said composition comprising at least one ion exchange resin and at least one surface-modified activated carbon, a pouch comprising the composition, and a method reducing the concentration of cyanuric acid and other contaminants in treated recreational water, said method comprising adding the composition to or putting the composition in contact with treated recreational water.

The invention discloses an environment-friendly flue gas treatment device for waste incineration, and relates to the technical field of flue gas treatment.The environment-friendly flue gas treatment device comprises a treatment tank, an air draft device is installed on the surface of the treatment tank in a communicating mode, an incinerator is fixedly installed at the end, away from the treatment tank, of the air draft device, and a water suction pump is arranged on the right side of the treatment tank; a spraying device is fixedly installed at the top of the water suction pump, a nozzle is arranged at the bottom of the spraying device, a drainage pipe is installed on the surface of the treatment tank in a communicating mode, a smoke exhaust pipe is fixedly installed at the top of the treatment tank, and an activated carbon plate is arranged on the inner wall of the treatment tank. The spraying device is arranged in the spraying device, the spraying device comprises a supporting frame, a smoke exhaust fan, a reciprocating lead screw, a threaded block, a connecting plate, a fixing rod, a long plate, an annular plate, a spiral rod, a threaded ring, a rotating plate, a sliding plate and a circular plate, the spraying range of a nozzle can be adjusted through vertical movement of the circular plate, and the overall spraying effect is improved; the treatment on the flue gas is improved.

The invention provides a sulfur-tolerant shift pre-transformation protective agent as well as a preparation method and application thereof, and relates to the technical field of sulfur-tolerant shift. The magnesium aluminate spinel, the nickel aluminate spinel and the activated carbon are used as composite carriers, the cobalt is used as a main conversion active component, the detoxification carriers have good adsorption and removal effects on arsenic compounds and small-particle impurities, the arsenic capacity is large and is not influenced by the content of hydrogen sulfide, the conversion activity of the protective agent is moderate, the temperature rise of a bed layer is controllable, and the conditions of large temperature rise and overtemperature are avoided; the influence of a water-carrying working condition on the catalyst is greatly avoided, and the catalyst is suitable for a pre-shift furnace and a detoxification tank in a sulfur-tolerant shift process.

The utility model discloses a quick-release activated carbon adsorption box which comprises a box body, an activated carbon filter screen and a dismounting part for quickly dismounting the activated carbon filter screen, the dismounting part comprises an insertion opening formed in one side of the box body, a fixing plate fixedly connected with one side of the activated carbon filter screen, an extension plate fixedly connected with the top of the fixing plate, a first groove formed in one side of the box body, an inclined plate fixedly connected with one side of the extension plate, a positioning opening formed in the inclined plate and a positioning rod connected with the positioning opening; through the arrangement of the box body, the activated carbon filter screen and the dismantling part, the problems that an activated carbon filter element is usually installed in an existing activated carbon adsorption box, injection molding waste gas can be filtered and purified through the activated carbon filter element, but the activated carbon filter element cannot be detached when installed, and the injection molding waste gas cannot be purified are solved. The activated carbon filter element can be detached from the activated carbon adsorption box only through multi-step operation, the disassembly and assembly are relatively tedious, and the practicability of the activated carbon adsorption box is influenced.

The invention relates to the technical field of radon concentration measurement, in particular to radon concentration detection equipment, a radon concentration detection method and a radon concentration detection device. The radon concentration detection equipment comprises a feeding rotary disc stock bin assembly, a mechanical arm grabbing assembly, a detection assembly, a control assembly and a power supply assembly. The control assembly is in communication connection with the feeding rotary disc stock bin assembly, the mechanical arm grabbing assembly and the detection assembly. The loading turntable stock bin assembly is used for placing an active carbon box to be tested; the control assembly is used for controlling the feeding rotary disc stock bin assembly to convey the activated carbon boxes to a target grabbing position, controlling the mechanical arm grabbing assembly to move to the target grabbing position to grab the activated carbon boxes in sequence and putting the activated carbon boxes into the detection assembly in sequence, and the detection assembly is used for obtaining the radon concentration in each activated carbon box. According to the technical scheme, the radon concentration of the activated carbon box can be automatically tested, then the radon concentration in a room such as a laboratory is determined, the detection experiment efficiency can be improved, and the cost can be reduced.

The invention provides a full-biodegradable film and a preparation method thereof. The film comprises the following raw materials: PLA, PBAT, calcium carbonate, an epoxy chain extender and zinc stearate. The preparation method of the film comprises the following steps: (1) modifying calcium carbonate with zinc stearate to obtain active calcium carbonate; (2) mixing activated calcium carbonate and PBAT, melting and granulating to obtain a one-step modified material; (3) carrying out melt blending on an epoxy chain extender and PLA to obtain a second-step modified material; (4) carrying out melt blending on the first-step modified material and the second-step modified material to obtain a PLA / PBAT / calcium carbonate composite material; and (5) adopting the PLA / PBAT / calcium carbonate composite material, and continuously blowing the PLA / PBAT / calcium carbonate composite material into a film through a single-screw extruder to obtain the full-biodegradable film. The thin film meets the use requirements of GB / T38082-2019, GB / T21661-2020 and GBT 35795-2017, and the production cost is low.

The invention discloses a preparation method and application of an activated carbon fiber electrode material modified through nitrogen plasma chemical vapor deposition and acidification, and the preparation method of the activated carbon fiber electrode material comprises the following steps: carrying out cleaning pretreatment on flaky activated carbon fiber; performing normal-temperature nitrogen plasma chemical vapor deposition on the pretreated active carbon fiber to obtain a first modified precursor active carbon fiber N-ACF, immersing the N-ACF in nitric acid, and performing heating acidification treatment to obtain a second modified active carbon fiber N-Acid-ACF, thereby completing the preparation. The electrode material disclosed by the invention is prepared by adopting a green and environment-friendly method, is simple and efficient, effectively improves the electrical generation efficiency of hydrogen peroxide, has ultrahigh degradation performance on phenol, and also has good stability. In addition, polar plates are not consumed in the process, equipment is simple, operation and management are convenient, and wide popularization space and use value are achieved.

The invention discloses dibutyl adipate as well as a preparation method and application thereof, preparation raw materials comprise adipic acid, n-butyl alcohol and a catalyst, and the molar ratio of the adipic acid to the n-butyl alcohol to the catalyst is 1: (3-8): (0.001-0.005). Excessive n-butyl alcohol obtained through distillation and kettle residues obtained after vacuum rectification can be directly applied to the next batch of reaction, continuous circular reaction can be achieved by supplementing a small amount of catalyst, maximum utilization of raw materials is achieved, and the production cost is reduced. Compared with the product obtained by the prior art, the content of the product obtained by simple rectification is higher, the content of dibutyl adipate in the product is 99.8% or above, the risk of trace activated carbon residue after activated carbon adsorption treatment is avoided, and the cosmetic grade product standard is met.

The invention relates to the technical field of denitration, and discloses a preheating and control method, device and equipment for activated carbon in an adsorption tower bin. The method comprises the following steps: calculating first heat of activated carbon in a stock bin, second heat brought by flue gas entering the stock bin, third heat released by denitration reaction in an adsorption tower, and fourth heat brought by original flue gas entering a denitration area of the adsorption tower; calculating a first temperature when the active carbon in the stock bin enters the adsorption tower and a second temperature of the active carbon in the denitration area according to the four heat quantities; and the first temperature and the second temperature are judged, and the flow of the smoke entering the stock bin is controlled according to the judgment result. The flue gas preheats the activated carbon in the stock bin through the bypass flue, the purified flue gas is reasonably utilized for preheating, the opening degree of the bypass valve is regulated and controlled according to the first temperature and the second temperature so as to regulate the flow of the flue gas entering the stock bin, the temperature of the activated carbon entering an adsorption area is stabilized in a proper temperature interval of denitration reaction, the denitration effect and efficiency are improved, and the energy consumption is reduced. Meanwhile, the safety of the denitration and desulfurization system is ensured.

The invention discloses a method for separating and purifying gamma-aminobutyric acid from whole cells or enzymatic conversion liquid. The method comprises the following steps: removing thalli and large-particle impurities, denaturating, decolorizing and removing impurities, crystallizing for the first time, washing for the first time, crystallizing for the second time, washing for the second time and drying. According to the present invention, the thermal denaturation of the protein, the active carbon decoloration and the flocculation impurity removal are integrated, such that the solid-liquid separation frequency is reduced, the problems of difficult filtration and easy leakage of the powdered active carbon are solved, and the purity and the yield of the gamma-aminobutyric acid are significantly improved. In the whole separation and purification process, the pH value is not adjusted, the cost is saved, impurities are reduced, and the ion removal process is omitted. And collecting the primary crystallization mother liquor and washing liquor for secondary crystallization, so that the yield of the final product is greatly improved. According to the separation and purification method, the purity of the obtained gamma-aminobutyric acid is greater than 99%, the yield is greater than 92%, and the crystal light transmittance is greater than 99%. The method provided by the invention is simple, efficient and low in cost, and has a wide application prospect.

The present invention provides a real-time carbon emission calculation system and method for a coal-fired power plant, which collects the operation data of each unit of the coal-fired power plant and the carbon emission calculation guide data; according to the carbon emission calculation method, the carbon emissions of different activities of each unit of the power plant and the carbon emission intensity are calculated in real time; according to the real-time carbon emissions of each unit of the power plant, the hourly, daily, monthly and annual carbon emissions and carbon emission intensity are accumulated based on time, and the total carbon emissions and carbon emission intensity of the entire power plant are accumulated based on the units, and displayed. The present invention develops a real-time carbon emissions and carbon emission intensity calculation system and method, which tracks and calculates the carbon emissions of enterprises in real time according to national standards, and uses this data to provide effective data support for the purchase of carbon emission quotas and the production and operation of enterprises.

The invention provides a nitrogen-doped carbon material and a preparation method and application thereof, and belongs to the technical field of supercapacitor materials. A hydrothermal method and an activating agent activation method are adopted, nitrogen atom doping modification is performed on the carbon material, the specific surface area of activated carbon is increased, the pore diameter structure of the activated carbon is improved, the three-dimensional graded porous nitrogen-doped carbon material is obtained, the nitrogen-doped carbon material is used in a supercapacitor, and under the condition of the same size, the specific surface area of the carbon material is increased. The capacity and the energy density of the super capacitor are both improved by at least 40%, the size of the super capacitor required by the high-power-consumption field can be effectively reduced, and the application scene of the super capacitor is greatly expanded.

The invention belongs to the technical field of electrochemical sensors, and particularly relates to a cobalt-based modified industrial solid waste vinegar residue derived carbon composite material and a preparation method and application thereof. The preparation method comprises the following steps: washing, drying, crushing and sieving industrial waste vinegar residues to obtain vinegar residue powder; carbonizing the vinegar residue powder in an inert atmosphere to obtain carbonized vinegar residues; the carbonized vinegar residues are mixed in a hot alkali solution for activating treatment, and then Co3O4 is derived through inorganic cobalt salt in-situ growth ZIF-67, so that the cobalt-based modified industrial solid waste vinegar residue derived carbon composite material is obtained. Porous activation is carried out on the surface of the carbonized vinegar residues through hot alkali, rich protruding wrinkles and pores are formed, the surface area is increased, rich nitrogen components and active carbon oxygen functional groups are reserved, and the catalytic reaction activity is improved. The material is used as a sensing material to prepare a high-performance electrochemical biosensor, and the constructed electrochemical sensor is used for detecting biomolecules such as hydrogen peroxide and the like to obtain a relatively wide detection range.

There is disclosed a method and system for utilizing carbon fibres for purification of rejected brine solution comprising thermally recycling carbon fibres and mechanically reducing the recycled carbon fibres, employing a chemical surface activation process for the reduced carbon fibres, resulting in chemically activated recycled carbon fibres; and exposing the activated recycled carbon fibres along with the brine solution to CO2 gas, resulting in the activated recycled carbon fibres selectively recovering contaminants from the brine solution, wherein adsorption of CO2 molecules is also performed by the activated recycled carbon fibres during the recovery. The thermal recycling of carbon fibres is done via pyrolysis and a G-S-L contact system assists in exposing the activated carbon fibres along with the brine solution to CO2 gas at varying flow rates and contact times for recovering contaminants from the brine solution.

The preparation method of the CO2 thickening-downmixing-tracing nano carbon needle comprises the following steps: step 1, modifying a nitrogen-doped activated carbon quantum dot by adopting a silane coupling agent to obtain a modified activated carbon quantum dot; 2, mixing methyl silicone oil, a silane coupling agent and a thickening functional monomer to obtain a mixture, and activating; adding a catalyst and fully reacting to obtain a fluorine-containing siloxane polymer; 3, mixing the activated carbon quantum dots obtained in the step 1 and the fluorine-containing silane polymer solution obtained in the step 2, and fully reacting to obtain the CO2 thickening-downmixing-tracing nano carbon needle; according to the nano carbon needle, the viscosity of supercritical carbon dioxide is increased, the miscible phase pressure is reduced, meanwhile, in-situ emulsification tackifying can be carried out in high-water-content and high-permeability pores, and CO2 pressure driving-tracing-burying integration of an oil and gas field can be achieved, so that a win-win mode of green low-carbon development and economic benefits is constructed.

The invention discloses a method for preparing a NaP molecular sieve / activated carbon composite material from coal gangue, belongs to the technical field of coal-series solid waste recycling, and aims to solve the technical problem that the alkali resistance and wear resistance of a coal gangue-based molecular sieve need to be further improved in the prior art. The method comprises the following steps: adding a crystallized molecular sieve into a vapor deposition device, carrying out vapor deposition to obtain a carbonized molecular sieve, and carrying out hot isostatic pressing to obtain the carbon-coated molecular sieve. And carrying out vapor deposition, hot isostatic pressing and oxidation liquid treatment, and finally cross-linking through a hydrophilic modifier to obtain the wear-resistant, alkali-resistant and hydrophilic composite molecular sieve.

The invention discloses a composite bio-based suspension purification system based on a near-natural water ecology concept, and belongs to the technical field of water ecology diversity restoration. The system is composed of an emergent aquatic plant ecological design module, a bio-based suspension core, a microorganism cultivation bed, an intelligent underwater oxygenation and aeration module, an artificial ecological fish reef and a submerged plant planting module. Wherein the bio-based suspension core is of a four-layer gradient composite structure and comprises a polyester fiber filler layer, an active carbon fiber sponge layer and a palm fiber bio-base layer, and synergistic purification of physical adsorption, chemical degradation and biological metabolism is achieved. The intelligent aeration module dynamically regulates and controls the aeration intensity through multi-parameter sensor linkage and a fuzzy PID algorithm, and the oxygen transfer efficiency is larger than or equal to 35%. According to the invention, through coupling design of aperture gradient distribution (80-92% porosity) of the four-layer gradient bio-based suspension core and a dynamic response threshold value of a fuzzy PID algorithm, collaborative optimization of carrier structure parameters and control system parameters is realized for the first time. The innovative technology not only improves the stability and diversity of an ecological system, but also strengthens the natural purification capacity of a water body, and provides a new thought for water environment protection.

The invention relates to the technical field of heavy metal wastewater treatment, in particular to an electrochemical device and an extraction method for extracting copper from copper-containing wastewater, an anode material of the electrochemical device is one of activated carbon, graphite, lead dioxide, BDD and CumX1-a-bYaZb, a cathode material of the electrochemical device is one of CunX1-c-dYcZd and a carbon-selenium compound, and after a cathode and an anode are connected with a power supply, the copper is extracted from the copper-containing wastewater. The device is used for treating copper-containing wastewater. Wherein 1 < m < = 2, 1 < = n < 2, and m > n; 0 < = a < = 1, 0 < = b < = 1, and 0 < = a + b < = 1; 0 < = c < = 1, 0 < = d < = 1, and 0 < = c + d < = 1; x, Y and Z are selected from one of S, Se and Te. The copper-based chalcogenide is used as an electrode material and forms an electrochemical device with other electrodes, the device is an electro-catalysis coupling deionization system with electrochemical oxidation complex breaking performance, and the selective removal effect on Cu < 2 + > in organic complex copper-containing wastewater, strong acid wastewater and wastewater interfered by high-concentration salt ions and heavy metal ions is good; by means of the device, the complexing breaking effect on an organic complexing pollutant Cu-EDTA can be effectively achieved, and then Cu < 2 + > extraction is completed.

The invention belongs to the technical field of fly ash treatment, and particularly relates to a treatment process for comprehensive recycling of fly ash, which specifically comprises the following steps: S1, collecting, accurately metering, washing and extracting fly ash, and respectively feeding generated mother liquor and filter residues into a concentration unit and a low-temperature thermal decomposition unit for treatment; s2, adding a pH regulator and a heavy supplement agent into the mother liquor in the concentration unit, and filtering to remove metal sludge to obtain calcium chloride mother liquor; evaporating the calcium chloride mother liquor to obtain a calcium chloride solution and sodium potassium waste salt; and S3, heating the filter residue to a pyrolysis desorption temperature for dechlorination decomposition, cooling the desorbed fly ash for resource recovery, carrying out cloth bag dust removal on the flue gas generated by desorption, carrying out secondary combustion decomposition, carrying out desulfurization, activated carbon adsorption and denitration treatment in sequence, and discharging the flue gas. The problems of low fly ash treatment efficiency and low resource utilization rate in the existing fly ash treatment process are solved, various products generated in the fly ash treatment process can be subjected to resource utilization, and the resource utilization rate of fly ash treatment is improved.

The invention relates to a spinel / layered composite phase modified lithium-rich manganese-based positive electrode material and a preparation method thereof. The preparation method comprises the following steps: adding lithium acetate, manganese acetate, cobalt acetate and nickel acetate into deionized water, and proportioning according to a general formula LiNixCoyMnzO2 * Li2MnO3 (x + y + z = 1, 0.5 < = xlt, 0.75, 0.2 < = ylt, 0.25, 0 < = z < = 0.3) to obtain a salt solution; precursor powder is prepared through a spray pyrolysis method; carrying out high-temperature calcination treatment on the precursor powder to obtain powder; adding conductive active carbon into the powder, and carrying out ball milling in absolute ethyl alcohol; and drying the ball-milled material in a blast drying oven, and standing to obtain spinel / layered composite phase modified lithium-rich manganese-based positive electrode material powder. The charge transport characteristic and the dynamic performance of the lithium-rich manganese-based positive electrode material are improved, so that the median voltage of the positive electrode material is greatly improved to 3.78 V, and meanwhile, the overall stability of the positive electrode material is greatly improved. The finally prepared button cell shows excellent cycling stability, and within the voltage of 2-4.8 V, the average median voltage decline of each cycle is 1.15 mV after 400 cycles of 1C current; and meanwhile, the synthesis steps are simple and convenient, and the lithium-rich manganese-based positive electrode material can be prepared by adopting conventional equipment.