969results about How to "High removal rate" patented technology

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.

The invention relates to the technical field of sewage discharge treatment, and discloses a sewage low-carbon treatment system based on electrochemistry and biochar, which comprises a deep treatment filter tank, an electrochemical nitrogen and phosphorus removal device, a biochar adsorption and filtration module, an intelligent control and operation and maintenance system, a slow-release agent regulation and control module and a low-carbon and resource recycling system, the advanced treatment filter tank is used for filtering sewage impurities and particles, adsorbing and removing organic matters, reducing the content of nitrogen and phosphorus nutrient substances and adapting to the change of water quality and water quantity; the electrochemical nitrogen and phosphorus removal device is used for carrying out electrochemical reaction to remove nitrate, phosphate and fluorine ions. According to the invention, the electrochemical active reaction is combined with charcoal adsorption filtration, so that the technology greatly improves the sewage treatment efficiency, especially shows a higher removal rate when treating complex pollutants, can meet higher water quality standard requirements, and effectively overcomes the difficulty that the traditional treatment technology is difficult to remove multi-element pollutants.

The invention discloses an intelligent numerical control machining method and system for mold manufacturing, and the method comprises the steps: obtaining a to-be-cut pattern of a mold, planning a milling cutter feeding route, dividing the to-be-cut pattern into a plurality of milling cutter feeding sub-routes, determining milling cutter control tracks composed of spline curves, carrying out the clustering of the milling cutter control tracks, and obtaining a plurality of track sets; and in the milling process, a real-time machining track is collected, a curvature deviation value is calculated, if the curvature deviation value exceeds a preset value, a milling cutter control track is corrected, the milling cutter priority is ranked according to the size of the working radius, and proper track sets are screened out in sequence for milling till all the track sets are machined. Through intelligent path planning and real-time deviation correction, the use efficiency and machining precision of the milling cutter are remarkably improved, and high quality and high stability of mold manufacturing are ensured.

The invention discloses a CoFeCuMn LDH nanosheet, a confinement catalytic membrane and a preparation method of the CoFeCuMn LDH nanosheet. The preparation method of the CoFeCuMn LDH nanosheet comprises the steps that A1, cobalt salt, ferric salt, copper salt and manganese salt are dissolved in pure water according to a preset proportion to prepare a first solution, sodium hydroxide is dissolved in pure water to prepare a second solution, and sodium carbonate is dissolved in pure water to prepare a third solution; a2, adding the first solution and the second solution into the third solution, and stirring to obtain a mixed solution; a3, carrying out hydrothermal reaction on the mixed solution; a4, centrifugally washing the product obtained in the step A3 to obtain a precipitate; and A5, the sediment is dried, and the CoFeCuMn LDH nanosheet is obtained. According to the CoFeCuMn LDH nanosheet, the confinement catalytic membrane and the preparation methods of the CoFeCuMn LDH nanosheet and the confinement catalytic membrane, the degradation efficiency and the degradation rate of new pollutants are remarkably improved.

The invention discloses a treatment process for acid mine wastewater and a combined reactor thereof, and relates to the technical field of water treatment. The method specifically comprises the following steps: oxidizing the mine acid wastewater through an aerobic reactor; adjusting the pH value to 2.8 by using KOH in a first neutralization reactor, and further adjusting the pH value to 4.5 by using KOH in a second neutralization reactor; the wastewater enters a pretreatment reactor, H2S is introduced for treatment, and the treated wastewater continuously enters two anaerobic reactors for reaction. According to the method, an aerobic-anaerobic combined reactor containing iron oxidizing bacteria and sulfate reducing bacteria is adopted for treating the mine acid wastewater, on one hand, AMD can be effectively treated, on the other hand, heavy metal can be selectively precipitated, and Schwertmannite and metal sulfide with utilization value are obtained. The method not only realizes the economic value of effectively utilizing the wastewater, but also realizes the target of environmental treatment, and has better economic value.

The invention discloses a method for deeply removing readily oxidizable substances in high-purity electronic-grade phosphoric acid, which deeply removes the readily oxidizable substances in the high-purity electronic-grade phosphoric acid in a mode of combining ozone oxidation and resin adsorption to obtain a high-purity electronic-grade phosphoric acid finished product with extremely low readily oxidizable substance concentration. The specific process mainly comprises the following three steps: S1, introducing ozone gas at a certain temperature to oxidize readily oxidizable substances such as phosphorous acid and hypophosphorous acid in phosphoric acid into phosphoric acid so as to reduce the concentration of the readily oxidizable substances; s2, feeding the phosphoric acid subjected to ozone oxidation into an adsorption reactor to be in contact with an adsorbent, and further removing residual readily oxidizable substances in the phosphoric acid; and S3, filtering the phosphoric acid subjected to adsorption treatment through a filter element for separation, and removing residual small particles and impurities to obtain the electronic-grade phosphoric acid with readily oxidizable substances removed. The method is simple in process, controllable in condition, convenient to operate, safe and environment-friendly, does not need to add an additional solvent, avoids introduction of new impurities, reduces secondary pollution, and is suitable for preparing high-purity electronic-grade phosphoric acid.

The invention discloses an anti-fouling high-voltage electrocatalytic activity polyvinylidene fluoride uranium adsorption material and a preparation method thereof, and belongs to the field of uranium adsorption materials.According to the adsorption material, dimethyl sulfoxide serves as a solvent, polyvinylidene fluoride serves as a substrate material, amidoximation polyacrylonitrile serves as a modified molecule, and B i4T i3O12 / SnO2 serves as filler, and after physical blending, the adsorption material is prepared into the high-voltage electrocatalytic activity polyvinylidene fluoride uranium adsorption material. The composition is prepared by a freezing phase inversion method. The adsorbing material disclosed by the invention has an excellent removal rate on uranyl ions and has an excellent antibacterial property.

The utility model discloses a device for removing impurities in trichlorosilane, relates to the technical field of polycrystalline silicon production, and mainly aims to improve the removal efficiency of the impurities in the trichlorosilane on the basis of not increasing the cost. According to the main technical scheme, the device for removing the impurities in the trichlorosilane is characterized in that an inlet of a first mixer is connected to one end of a first feeding pipe and a second feeding pipe, a plurality of baffle plates are arranged in a reaction tank in a staggered mode and used for forming a baffle channel in the reaction tank, and one end of the baffle channel is connected to an outlet of the first mixer; the other end of the baffling channel, the filter and an inlet of the separating tower are sequentially connected, the inlet of the separating tower is further connected to a siloxane conveying pipe, a tower kettle of the separating tower is connected to the other end of the first feeding pipe and used for guiding siloxane to the first mixer, and a top collecting pipe of the separating tower is connected to the rectifying unit; wherein the second feeding pipe is used for guiding a trichlorosilane and dichlorosilane mixture containing impurities to the first mixer.

The invention provides a preparation method of a Fenton-like catalytic material for selectively removing phenolic pollutants, the Fenton-like catalytic material and application of the Fenton-like catalytic material, and belongs to the technical field of water treatment.The preparation method comprises the steps that light MgO is added into a copper nitrate solution to be stirred for a reaction, obtained precipitates are filtered, washed and dried, and copper hydroxide nanoparticles are obtained; dispersing the copper hydroxide nanoparticles in a cerium nitrate solution for hydrothermal reaction, and filtering, washing and drying the obtained precipitate to obtain a Ce (at) Cu (OH) 2-IE intermediate; and calcining the Ce (at) Cu (OH) 2-IE intermediate to obtain the Fenton-like catalytic material CC-IE. The prepared catalytic material can efficiently activate PMS to generate singlet oxygen, utilizes an oxidative polymerization mechanism to stably remove organic phenol pollutants in water, and has the advantages of high electron utilization rate, selective oxidation, non-free radical path degradation and high TOC removal rate.

The invention discloses a metallurgical waste gas purification and recovery method based on a particle swarm optimization algorithm, and the method comprises the following steps: S1, carrying out the pretreatment of metallurgical waste gas, monitoring the temperature, pressure, flow velocity and chemical components in real time, and inputting the temperature, pressure, flow velocity and chemical components into an optimization module; s2, key parameters in the purification and recovery process are analyzed through a recursive morphological coupling algorithm, a problem is decomposed into sub-problems, and operation parameters are determined; s3, performing global search through a morphological recombination particle swarm optimization algorithm to generate an optimization parameter set; s4, performing dynamic recombination on the potential optimal solution by applying an evolutionary form recombination algorithm, and improving a local solution; s5, the optimized parameter set is applied to the purification device, dynamic adjustment is conducted through a recursive morphological coupling algorithm, and recognition and recovery of rare components are achieved; s6, performing multi-stage detection on the purified and recycled waste gas, and feeding back to an optimization module for parameter adjustment; and S7, according to waste gas components and process requirements, operation parameters are adjusted in a self-adaptive mode.

The invention relates to the technical field of machine tool intelligent machining, and discloses a machining method based on deep learning and multi-sensor fusion, which comprises the following steps: collecting data in the machining process of a numerical control machine tool, and preprocessing the data in the machining process of the numerical control machine tool to obtain a data set; inputting the obtained data set corresponding to the data acquired by the plurality of sensors into a Kalman filtering algorithm for Kalman recursive filtering processing to obtain fused actual observation data acquired by the sensors; inputting a data set corresponding to the fused actual observation data acquired by the sensor and the data acquired by the numerical control system into a depth Q network algorithm, and predicting to obtain an optimal tool path; a magnetic field is applied to the machined workpiece through the excitation module; and machining a machined workpiece model along the optimal tool path by adopting an ultrasonic tool high-frequency machining method. According to the invention, the surface quality of the to-be-processed workpiece can be obviously improved.

The invention belongs to the field of environmental protection and pollutant treatment, and relates to a method for enriching and detecting microplastics in a surface water body. The lignin is grafted with amido and carboxyl through two-step reaction, firstly, carbon quantum dot active site powder with positive charges on the surface is prepared, the carbon quantum dot active site powder is cross-linked with the modified montmorillonite, and the carbon quantum dot active site microporous adsorbent is prepared, so that the prepared adsorbent has multiple surface functional groups and multiple and uniform active sites, and the adsorption efficiency is improved. The adsorption speed of the micro-plastics in the water body can be increased, the adsorption capacity of the micro-plastics in the water body is improved, and rapid enrichment and separation of the micro-plastics in the water body are realized. Based on the enrichment and separation method, the invention further provides a method for measuring the microplastics in the water environment. According to the invention, rapid filtration, enrichment and detection of micro-plastics in water are realized, the operation is simple and convenient, and the accuracy is high.

The invention relates to the technical field of mine water treatment, and discloses a treatment method of high-calcium-hardness mine water. The method comprises the following steps: (1) adjusting water chemical components of the mine water, so that the pH value of the mine water is 8-10, the mass ratio of sodium ions to calcium ions is 1: (4-8), the TDS is 7500-8000 mg / L, and the concentration of bicarbonate ions meets the following conditions: the required concentration of the carbonate ions is calculated according to the solubility product of calcium carbonate; the concentration of the bicarbonate ions is 90% twice the calculated concentration of the bicarbonate ions; and (2) adding gypsum into the mine water obtained in the step (1) to carry out first induced crystallization so as to remove calcium ions in the mine water. The method provided by the invention is used for treating the high-calcium-hardness mine water, can adapt to different inflow water qualities, and further improves the removal rate of calcium ions. The method provided by the invention can effectively ensure that the Ca < 2 + > content of the effluent quality of the mine water reaches the standard, can also reduce the secondary environmental pollution problem, and is low in energy consumption.

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 invention provides a method for measuring the object positions of gold ores above the medium fraction in heavy sand and application of the method, and belongs to the field of mineral processing.The method for measuring the object positions of the gold ores above the medium fraction in the heavy sand comprises the following steps that gold ores above the medium fraction in a heavy sand sample to be measured are selected, and the length, width and thickness of each gold ore are measured; calculating the observation volume of each gold mineral; a volume correction coefficient and color are introduced to calculate the mass of each gold mineral; and calculating the grade of the gold minerals above the medium grade. According to the method, the observed volume of the gold mineral is corrected by introducing the volume correction coefficient, so that the real volume closer to the reality is obtained, the density of the gold mineral is corrected through color formation, so that the real density closer to the reality is obtained, and the mass of the gold mineral obtained through volume and density calculation is more accurate; therefore, the calculated grade is more accurate.

The invention relates to the technical field of microorganisms, in particular to a seawater efficient heterotrophic nitrification and aerobic denitrification strain and application thereof. The strain is Marinobacter sp. TF26-2, and is preserved in the China General Microbiological Culture Collection Center (CGMCC) on May 27, 2024, the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No.30778. The invention further discloses a preparation method of the strain. The marinobacter TF26-2 provided by the invention has the functions of heterotrophic nitrification and aerobic denitrification at the same time, and can be used in the field of sewage treatment. The strain shows a good denitrification effect under different environmental conditions, is safe to aquatic organisms, and is especially suitable for being used as probiotics or an environmental modifier in the fields of mariculture and the like.

The invention provides a method for preparing a vanadium electrolyte by using aluminum oxide seed precipitation mother liquor crystallization vanadium slag, which comprises the following steps: carrying out reduction acid leaching on Bayer process seed precipitation mother liquor crystallization vanadium slag, converting V (V) and As (V) into V (IV) and As (III), adding an arsenic removal precipitator for arsenic removal, and further hydrolyzing to obtain VO (OH) 2; vO (OH) 2 is converted into a pentavalent vanadate solution through oxidation alkaline leaching, impurity ions such as arsenic, phosphorus, aluminum and silicon are further removed through multiple times of crystallization, and high-purity vanadate is obtained; and finally, high-purity vanadate is converted into a V (IV) solution through reduction acid leaching, an arsenic removal precipitator is added again, deep arsenic removal is achieved, VO (OH) 2 is obtained through hydrolysis, and VOSO4 electrolyte is prepared through sulfuric acid dissolution.

The invention discloses a method for carrying out synchronous biological nitrogen and phosphorus removal by adopting an MABR, which comprises the following steps: respectively introducing two parts of wastewater and raw water into a nitrogen removal area and a phosphorus removal area in a sewage treatment system, and enabling the amount of wastewater entering the nitrogen removal area to be greater than the amount of wastewater entering the phosphorus removal area; the denitrification zone is provided with a plurality of MABR membrane assemblies, the dissolved oxygen concentration of the denitrification zone is monitored and kept at 0.1 mg / L-0. 3mg / L, and effluent of the denitrification zone enters the dephosphorization zone; monitoring the dissolved oxygen concentration of the dephosphorization area, and keeping the dissolved oxygen concentration of the dephosphorization area at 2mg / L to 4mg / L; effluent of the phosphorus removal area enters the solid-liquid separation area, supernate of the solid-liquid separation area flows back to the nitrogen removal area, one part of sludge at the bottom of the solid-liquid separation area is discharged out of the system as residual sludge, and the other part of sludge flows back to the phosphorus removal area. According to the method for performing synchronous biological nitrogen and phosphorus removal by adopting the MABR, the sewage treatment efficiency can be improved.

The invention provides a biochar loaded sulfur modified zero-valent iron material and application thereof in groundwater remediation, and particularly relates to the technical field of inorganic materials. According to the biochar-loaded sulfur-modified zero-valent iron material, sulfur-modified zero-valent iron is loaded in a porous structure of biochar; the sulfur modified zero-valent iron has a core-shell structure; wherein the inner core of the core-shell structure is zero-valent iron, and the outer shell of the core-shell structure is iron sulfide. According to the biochar-loaded sulfur-modified zero-valent iron material provided by the invention, a sulfide layer is formed on the surface of zero-valent iron, so that a zero-valent iron core is prevented from being in direct contact with water or dissolved oxygen, and the durability of the zero-valent iron core is improved. Delocalized electrons in the sulfide layer promote the electron transfer process, and the catalytic performance of the material is enhanced. The biochar loaded sulfur modified zero-valent iron material provided by the invention is high in stability and wide in application range. Due to the multifunctionality of the material, the material has potential application value in a plurality of fields such as environmental restoration and pollutant degradation.

The invention relates to the technical field of water treatment, and provides gel type imidazolyl anion exchange resin as well as a preparation method and application thereof. According to the method, the gel type styrene-divinyl benzene copolymer is taken as a matrix, and the adsorption selectivity of the gel type imidazolyl anion exchange resin on rhenium / technetium is regulated and controlled by grafting imidazole with alkyl side chains with different lengths, so that the removal rate of rhenium / technetium is increased. The gel type imidazolyl anion exchange resin provided by the invention has relatively high adsorption capacity on ReO4 <-> and TcO4 <->, high selectivity, wide applicable pH value and temperature range, strong acid and alkali resistance and irradiation stability, and wide application prospect.

The invention discloses an industrial wastewater treatment process, and belongs to the technical field of wastewater treatment.The industrial wastewater treatment process comprises the following steps that firstly, the pH value of wastewater is adjusted to be smaller than 5, microelectrolysis filler is added, and pretreated wastewater is obtained through stirring, standing and filtering; 2, carrying out Fenton oxidation treatment on the pretreated wastewater; according to the method, an iron-carbon micro-electrolysis-Fenton oxidation combined mode is adopted for treating the wastewater, the COD removal rate is high, granular iron-carbon filler (micro-electrolysis filler) used in the iron-carbon micro-electrolysis process has stable physical and chemical properties, and the long-term and efficient treatment effect can be guaranteed; according to the micro-electrolysis filler, the boron-nitrogen-doped carbon material is used for replacing a conventional carbon material, so that the treatment efficiency of the granular iron-carbon filler is improved, the treatment process can be better linked with a Fenton oxidation treatment process, and industrial treatment is facilitated.

The invention discloses a Fenton-like catalytic system and application thereof in degradation of acetaminophen, and belongs to the technical field of water treatment. The Fenton-like catalytic system is prepared from MXene and H2O2 (hydrogen peroxide). The MXene with nano-scale thickness and submicron or micron-scale transverse size is used as a catalyst, H2O2 is coupled to provide a Fenton-like catalytic system, a larger specific surface area and a larger reaction site are achieved, a Fenton-like catalytic reaction with highly oxyphilic single vacancy or vacancy cluster defects left in an etching reaction of H2O2 and MXene can be brought into full play, and the reaction efficiency is improved. The method has the advantages that the defect sites are accelerated to form oxidation clusters by hydrolyzing or extracting oxygen, the Fenton-like catalytic reaction of H2O2 is facilitated, the acetaminophen can be effectively degraded in the presence or absence of light, and the treatment requirement of the acetaminophen-containing sewage is met.

The invention discloses a method for extracting heavy metals from slurry reactor hydrogenated residual oil, which comprises the following steps: by taking residual oil as a raw material and biomass camellia oleifera shells as a filter material, removing the heavy metals in the slurry reactor residual oil by adopting a reduced pressure-hot suction filtration method; and then the filter residues are subjected to air roasting and alkali liquor leaching in sequence, and vanadium, molybdenum and nickel in the residual oil are separated and recycled. By investigating the removal effects of factors such as different solvents, proportions of different solvents and raw materials, different filter material dosages, different temperatures and the like on metal vanadium, molybdenum and nickel, the ignition loss of a filter cake containing 2% of biomass filter materials is 98.01% under the conditions that the roasting temperature is 550 DEG C and the roasting time is 6 h, the optimal metal recovery effect is achieved, the precipitation rate of molybdenum is 93.12%, the precipitation rate of vanadium is 81.25%, and the precipitation rate of nickel is 81.25%. And the precipitation rate of nickel is 85.56%.

The invention belongs to the technical field of environmental protection, and discloses a method for rapidly and efficiently removing and recycling polycyclic aromatic hydrocarbon in water and a carbon-based adsorbent, the method comprises the following steps: S1, preparing a modified carbon-based adsorbent; s2, treating the polycyclic aromatic hydrocarbon pollutant wastewater; and S3, recycling the polycyclic aromatic hydrocarbon. According to the preparation method, H3PO4 or ZnCl2 is taken as an activating agent, and an activated carbon base material and an activating process are controlled, so that nano-micron multi-scale modified carbon-based adsorbent particles which are mainly prepared from a large number of long-strip-shaped gap mesopores which are communicated with one another and are approximately distributed in parallel and are auxiliary from a small number of discrete irregular groove-shaped mesopores are obtained; the long and narrow long-strip-shaped gap mesopores of the particle are matched with the irregular groove-shaped mesoporous structure, so that large-size polycyclic aromatic hydrocarbon can be quickly adsorbed and desorbed, and the balance of adsorption and desorption efficiency can be realized; on one hand, the adsorption and desorption efficiency of pollutants is improved, and on the other hand, the dosage of the adsorbent is greatly reduced.

The invention belongs to the technical field of metal surface laser processing, and particularly relates to a metal surface microstructure precise preparation method and device based on nanosecond laser. Carrying out scanning processing on the metal sample with the surface covered with the flowing liquid film by adopting nanosecond laser processing equipment; wherein the flowing liquid film is a carbon nano tube suspension and is used for removing deposition residues generated in the processing process. According to the method, the microstructure with the needed shape and arrangement mode can be rapidly and efficiently created on the metal surface, the problems that the microstructure on the metal surface is staggered and disordered and poor in forming after nanosecond laser machining are solved, the machining efficiency and quality of the nanosecond laser microstructure can be remarkably improved, the microstructure is improved, and the surface performance is improved. Meanwhile, the process is simple, flexibility is high, and operation is simple and efficient.

The invention relates to the field of expressway service area wastewater treatment, in particular to an expressway service area wastewater treatment method based on anaerobic ammonia oxidation enhanced AOOA-MBBR. The method comprises the following steps: 1, preparing a reactor; 2, starting the reactor and inoculating bacteria, and in the step, gradually shortening the hydraulic retention time to 20 hours after the effluent stably runs for a preset time; step 3, anaerobic ammonium oxidation strengthening: after the effluent stably runs for a preset time, respectively replacing part of filler in each tank by using filler of biofilm-forming anaerobic ammonium oxidation bacteria; the concentration of dissolved oxygen in the first aerobic tank is 0.2 mg / L, and the concentration of dissolved oxygen in the second aerobic tank is 0.5-0.8 mg / L; manganese sulfate is added into part of the wastewater of the highway service area, and then the wastewater is directly pumped into the second anoxic tank; and 4, after the effluent is stable, entering a stable stage. When the hydraulic retention time is 20 hours, the total nitrogen and total phosphorus of the effluent can reach corresponding emission standards, so that the wastewater treatment efficiency of the highway service area is improved, and the problem of trouble in subsequent phosphorus removal is avoided.

The invention provides a method for preparing active copper oxide by recycling ammonia and carbon. The method comprises the following steps: step 1, preparing a copper dissolving reagent from ammonia water and carbon dioxide; 2, the copper raw material and a copper dissolving reagent are mixed, oxygen or air is introduced, heating and pressurizing are carried out for an ammonia leaching complexing reaction, and a copper ammonia complex is obtained; step 3, after the copper ammonia complex is filtered, rectifying to remove ammonia and carbon, producing ammonia gas and carbon dioxide at the tower top, and producing basic cupric carbonate slurry at the tower kettle; 4, centrifuging and drying the basic cupric carbonate slurry to obtain a basic cupric carbonate solid; and 5, calcining the basic cupric carbonate solid at high temperature to produce active copper oxide. According to the active copper oxide preparation method capable of recycling ammonia and carbon, the active copper oxide with high purity and uniform particle size can be directly prepared.

The invention discloses a preparation method of a nano zero-valent iron-based adsorbing material, which comprises the following steps: (1) adding 100 mL of deionized water into a 500 mL four-necked flask, then adding 1.0% of TA, purging for 15 minutes by using N2, then adding 2.78 g of FeSO4. 7H2O, and stirring for 10-60 minutes at the speed of 300 revolutions per minute; (2) dropwise adding 50 mL of a 0.5 M NaBH4 aqueous solution into the flask in the step (1) at a speed of 1 drop / second to obtain a black precipitate, and continuously stirring for 30 min after dropwise adding is finished; then carrying out magnetic attraction separation on the black precipitate, and respectively washing with deionized water and ethanol for three times; (3) adding 60mL of deionized water into a 250mL three-neck bottle, and then adding 60mg of amine substances into the three-neck bottle; the particles in the step (2) are then added to the solution, and the pH is adjusted to 8-9. And stirring at a speed of 300 revolutions per minute for 30 minutes, and then carrying out magnetic separation. And alternately washing with deionized water and ethanol for 3 times, and drying in a vacuum oven at 60 DEG C for 12 hours to obtain the composite particles.

The invention discloses a method and a system for efficiently removing a diaphragm of a non-liquid-injected roll core and accurately separating a positive pole piece and a negative pole piece. The method comprises the following steps: S1, carrying out primary slice dissociation; s2, primary winnowing and coarse removal; s3, secondary slicing and refined hydrolysis; s4, secondary winnowing and fine removal; s5, size grading; and S6, adaptive color selection. According to the method, traditional shredding is replaced by grading slicing, structural lamination of the materials in the treatment process is fundamentally avoided, the high removal rate of the diaphragms and high-precision sorting of pole piece materials in different forms are sequentially achieved, and the purity and process efficiency of overall recycled products are remarkably improved.

The invention is suitable for the technical field of semiconductor ultra-precision machining, and provides a semiconductor composite synergistic planarization device and method.The device comprises a polishing system and an electrical system; the polishing system comprises at least one ECMP polishing module, at least one CMP polishing module and a head rotating mechanism. Each ECMP polishing module and each CMP polishing module are correspondingly provided with a polishing disc; the head rotating mechanism comprises a plurality of polishing heads; the electrical system comprises a plurality of independent power supplies; positive electrodes of the independent power supplies are connected with the polishing heads in a one-to-one correspondence manner; each polishing disk is provided with a cathode end, and the cathode of each independent power supply is connected with the cathode end of each polishing disk. The problems of low polishing efficiency, high polishing pressure and poor surface type quality of SiC wafers and the like can be solved.