115results about How to "Improve oxidation efficiency" patented technology

The invention provides a system and a method for treating coexisting new pollutants in drinking water, and the system and the method are characterized in that firstly, ozone microbubble water with small volume and large specific surface area and magnetized superfine activated carbon are used for carrying out oxidation treatment on the coexisting new pollutants and adsorbing pollutants with small molecular weight and relatively high activity; the purpose of removing part of new pollutants is achieved; then, under the irradiation of an ultraviolet lamp tube, the reducing agent catalyzes sulfite to generate reducing free radicals such as hydration electrons [eaq-],. H and SO3., and under the substitution action of iodide ions, reductive dehalogenation and iodine substitution reaction of the halogenated organic matter difficult to degrade are achieved, and reduction removal of new pollutants difficult to degrade is achieved. The system is simple and compact in structure, is a treatment device integrating filtration, oxidation, adsorption and reduction, reduces the occupied area, can realize effective removal of coexisting new pollutants with different molecular characteristics and different reaction activities through multiple actions of physical interception, oxidation, adsorption, reduction and the like, and has a wide application prospect.

The invention belongs to the field of synthesis of organic matters, and particularly relates to a synthesis method of 4-oxo-beta-ionone, which comprises the following steps: S1, dissolving beta-ionone in a good solvent, and introducing sulfur dioxide; s2, adding water and a catalyst into the solvent, and then adding an oxidizing agent; s3, removing a water phase, and adding an alkaline solution; s4, separating a water phase, recovering the solvent, and distilling to obtain 4-oxo-beta-ionone; according to the method, the beta-ionone is oxidized into the 4-oxo-beta-ionone by using the oxidizing agent, and the sulfur dioxide is introduced to protect conjugated double bonds on a six-membered ring in the beta-ionone before the oxidizing agent is added, so that the oxidation selectivity of the oxidizing agent is improved, and the oxidation efficiency is high.

The invention discloses a step-by-step removal method for thallium and arsenic in lead-zinc smelting waste acid, which comprises the following steps: adding a calcium-containing precipitant into the lead-zinc smelting waste acid for neutralization and precipitation to obtain a neutralization and precipitation filtrate and a neutralization and precipitation filter residue; adding a calcium remover into the neutralized and precipitated filtrate to carry out calcium removal reaction to obtain calcium-removed filtrate and calcium-removed slag; adding an oxidizing agent I and a catalyst into the calcium-removed filtrate, controlling the pH value of the oxidation process to be 9.0-11.5 by using alkali liquor, carrying out selective oxidation thallium removal, and filtering to obtain thallium-removed filtrate and thallium-removed slag; and adding iron salt into the thallium-removed filtrate for deep arsenic removal to obtain effluent and arsenic-removed slag. According to the method, thallium and arsenic in the contaminated acid can be removed step by step, so that the concentration of arsenic and thallium in effluent stably reaches the standard for a long time while thallium slag and arsenic slag are separated.

The invention belongs to the technical field of environment-friendly treatment of high-concentration organic wastewater, and particularly relates to a wet catalytic oxidation treatment process for high-concentration organic wastewater. Wastewater in the wet catalytic oxidation treatment process for the high-concentration organic wastewater is formed by combining a plurality of streams of wastewater. In order to ensure the safety of the wet oxidation process, the combined wastewater is firstly subjected to steam stripping pretreatment to remove light component organic matters therein, then is pressurized and heated, enters a wet oxidation reaction section to remove most of COD therein, is cooled and depressurized after the reaction is finished, and is fed into the existing multi-effect evaporation section; the multi-effect evaporation concentrated solution is returned to the wet oxidation section to continuously remove organic matters, and condensate water enters a subsequent biochemical treatment section. The wet catalytic oxidation treatment process for the high-concentration organic wastewater is wide in application range, high in treatment efficiency, high in oxidation speed and low in secondary pollution.

The invention belongs to the field of catalyst material preparation, and particularly relates to a manganese-based catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dispersing a manganese-based carrier and an acidic solution in water, then transferring the solution into a reaction kettle for hydrothermal reaction, cooling and separating after the reaction is finished, and drying to obtain an acid-modified manganese-based carrier; under the stirring condition, transition metal salt is dissolved in water, the acid-modified manganese-based carrier is added, and a solid is obtained after filtering and drying; and finally, calcining the obtained solid to obtain the manganese-based catalyst. In a humid environment, the manganese-based catalyst shows higher chlorobenzene conversion rate, ozone conversion rate and COx selectivity than traditional catalysts, and has good long-term stability.

The invention provides a photoelectric auxiliary chemical mechanical polishing device which comprises a polishing disc, a grinding pad, a polishing head and a chemical liquid spray head, the polishing disc is electrically connected with a cathode of a power supply, the polishing head is electrically connected with an anode of the power supply and is used for adsorbing a wafer, and a lamp tube is embedded in the top surface of the polishing disc. The grinding pad is arranged above the polishing disc, abrasive particles and vertically-through liquid passing holes are formed in the grinding pad, and the chemical liquid spray head is arranged above the grinding pad and used for spraying chemical liquid to the grinding pad. According to the photoelectric auxiliary chemical mechanical polishing device provided by the invention, the surface of silicon carbide is subjected to electrochemical reaction under the action of an electric field, so that the oxidation efficiency of the surface of a wafer is improved, and the silicon carbide is removed through mechanical polishing; under the action of the light field, the light with the energy higher than the absorption threshold value of the silicon carbide material is irradiated to the to-be-polished surface of the wafer, the to-be-polished surface of the wafer is oxidized through a series of chemical reactions to form an oxide layer, the polishing efficiency of the wafer is improved, and the polishing quality of the wafer is guaranteed.

The invention provides a manganese-containing sewage treatment system and method, the treatment system comprises an ozone oxidation unit, a water quality monitoring unit, a water quality adjusting unit and a control unit, the water quality monitoring unit and the water quality adjusting unit are both connected with the ozone oxidation unit and the control unit; the ozone oxidation unit is configured to perform ozone oxidation treatment on the manganese-containing sewage; the water quality monitoring unit is configured to monitor the ORP value of the manganese-containing sewage in the ozone oxidation unit in real time; and the control unit is configured to control the water quality adjusting unit to adjust the ORP value of the manganese-containing sewage to be within a first preset target range according to the ORP value of the manganese-containing sewage monitored by the water quality monitoring unit. According to the manganese-containing sewage treatment system and method provided by the invention, COD (Chemical Oxygen Demand) up-to-standard discharge of the manganese-containing sewage is realized, and meanwhile, a water body can be prevented from being reddish brown or blood red, so that the attractiveness of the water body and the balance of an ecological system can be maintained.

The invention discloses a method for restoring arsenic and halogenated hydrocarbon combined contaminated soil through oxidation enhanced leaching and a leaching agent. The leaching agent is composed of a first-stage leaching solution and a second-stage leaching solution. The first-stage leacheate eluting agent is composed of persulfate and strong base; the second-stage leacheate eluting agent is composed of organic acid and alcohol. According to the method, a two-stage leaching mode is adopted for the arsenic and halogenated hydrocarbon combined contaminated soil, synchronous removal of arsenic and halogenated hydrocarbon in the contaminated soil can be achieved through the oxidation strengthening synergistic interaction effect of the leaching agent, the toxicity of arsenic can be reduced, potential safety hazards in the subsequent waste liquid treatment process can be reduced, and the method is mild in condition and easy to implement. The method has the advantages of high removal rate, low cost and the like.

The invention discloses a deep treatment method and system for fracturing flow-back fluid of an oil and gas field, and the method comprises the following steps: firstly, carrying out coagulation pretreatment on the fracturing flow-back fluid; adjusting the pH value of the fracturing flow-back fluid, wherein the pH value is less than 9; then, potassium ferrate or H2O2 and the potassium ferrate are adopted to conduct oxidation treatment on the fracturing flow-back fluid, and the molar mass ratio of the H2O2 to the potassium ferrate is 1: (1-3.5); treating the fracturing flow-back fluid subjected to oxidation treatment by adopting a sequencing batch bio-membrane reactor, and removing organic matters in the fracturing flow-back fluid; and finally, carrying out membrane filtration on the fracturing flow-back fluid by adopting a microfiltration membrane and a nanofiltration membrane in sequence. Based on an oxidation technology, a biological treatment technology and a membrane filtration technology in sequence, an efficient and economical fracturing flow-back fluid treatment scheme is constructed, and the oil content, the median particle size and the SS of treated effluent all meet the II-level water quality standard in Technical Requirements and Analysis Methods for Injection Water Quality Index of Clastic Rock Oil Reservoir (SY / T 5329-2022). Meanwhile, the first-grade standard of Integrated Wastewater Discharge Standard (GB 8978-1996) is met, meanwhile, the potential of treating and discharging the fracturing flowback fluid is achieved, and good practicability is achieved.

The invention discloses a non-carbonized lead metallurgical device and method, and belongs to the field of non-carbonized lead metallurgy. The non-carbonized lead metallurgical device comprises a metallurgical equipment shell, a low-temperature heating chamber is formed in the metallurgical equipment shell, an exhaust chamber is further formed in the metallurgical equipment shell, and a material fishing rod is further arranged in the low-temperature heating chamber; the material fishing rod can fish flying materials in the low-temperature heating chamber into the high-temperature reduction chamber, and a turning-up assembly for turning over the materials at the bottom of the low-temperature heating chamber is arranged in the low-temperature heating chamber. According to the device, the turning-up assembly is arranged, the turning-up assembly can push up lead sulfide particles to enable the lead sulfide particles to fly in the low-temperature heating chamber, the heating uniformity of the lead sulfide particles can be improved in the process, part of the lead sulfide particles which cannot be in complete contact with oxygen can fully react with the oxygen, and therefore within the same oxidation time, the lead sulfide particles can be fully oxidized. More lead sulfide particles can be oxidized, the oxidation rate is effectively increased, and the oxidation efficiency of lead sulfide can be effectively improved in this way.

The invention discloses a method and a device for treating supersaturated wastewater containing chlorobenzene organic matters, and belongs to the technical field of high-concentration organic wastewater treatment. According to the technical scheme, the method for treating the supersaturated wastewater containing the chlorobenzene organic matters comprises the following steps: 1) separating and dissolving undissolved chlorobenzene; 2) oxidizing chlorobenzene and regenerating filler; 3) thoroughly oxidizing chlorobenzene and intermediate products thereof; (4) flocculating settling; the device comprises a first-stage reaction tower, a second-stage reaction kettle and a flocculation sedimentation tank which are sequentially connected through pipelines, the first-stage reaction tower is provided with a wastewater inlet pipeline and a first-stage reaction tower water outlet pipeline, and the first-stage reaction tower water outlet pipeline is provided with an acid liquor feeding pipeline, an oxidizing agent I or catalyst feeding pipeline and a first-stage UV reactor; and a second-stage UV reactor is arranged on a pipeline between the first-stage reaction tower and the second-stage reaction kettle. The method is suitable for treatment processes of high-concentration / supersaturated chlorobenzene-containing organic matter wastewater and high-concentration / supersaturated chlorobenzene-containing organic matter wastewater.

The invention relates to a photoelectrochemical urea degradation photoanode based on a bismuth vanadate semiconductor film and an electrode system thereof. The photoanode comprises a BiVO4 light absorption layer arranged on a transparent conductive substrate, a hole transport layer arranged on the BiVO4 light absorption layer and a Co-Ci cocatalyst layer arranged on the hole transport layer, the BiVO4 light absorption layer is excited by light to generate electron hole pairs, holes enter electrolyte under the combined action of extraction of the NiOBix hole transport layer and external bias voltage to carry out urea degradation half reaction, and meanwhile, the Co-Ci cocatalyst plays a role in improving surface reaction kinetics and reducing overpotential of urea oxidation reaction, so that the degradation efficiency of urea is improved. The photoanode has stronger carrier separation and migration capability and higher working stability, and the efficiency and stability of urea degradation are improved.

The invention discloses an oxygen vacancy-enriched WO3-W18O49 composite catalytic material as well as a preparation method and application thereof. According to the technical scheme, ultrapure water is used as a solvent, a tungsten source, sodium chloride and hydrochloric acid are added, and a WO3 nanorod is prepared through a hydrothermal method; and synthesizing an oxygen vacancy-enriched WO3-W18O49 composite photo-thermal catalytic material by using WO3 as a substrate, ethanol as a solvent and tungsten hexachloride as a raw material through an in-situ deposition method. WO3 and W18O49 are combined to form a binary oxygen-rich vacancy heterojunction, the binary oxygen-rich vacancy heterojunction follows a z-type charge transport mechanism, charge separation is facilitated, electrons are kept in a conduction band region of WO3, WO3 nanorods only absorb in ultraviolet and partial visible light regions, the W18O49 exactly complements spectral absorption, the light absorption capacity of the material is improved, and the photoelectric conversion efficiency of the material is improved. Meanwhile, the photo-thermal catalytic performance of the WO3-W18O49 composite material on cyclohexane oxidation is also improved, and the WO3-W18O49 composite material belongs to the technical field of catalysis.

The utility model belongs to industrial wastewater treatment technical field discloses a kind of Fenton oxidation pond packing shelf and Fenton reaction pond device, including packing shelf body and at least two hanging material layers, and packing shelf body includes upper shelf body and lower shelf body, and both are detachably connected along vertical direction, and upper shelf body top is provided with lifting connection structure;At least two hanging material layers are respectively arranged on upper shelf body and lower shelf body, and each layer hanging material layer includes multiple hanging material cross beams that are arranged in parallel along horizontal interval, and multiple filter bags are detachably and interval hung along the length direction of each hanging material cross beam, and filter bag interior is filled with zero-valent iron reagent, and raw water in oxidation pond can contact reaction with zero-valent iron reagent in its interior through the small hole of filter bag.The utility model effectively improves the contact efficiency of reaction reagent, reduces ferrous sulfate consumption, makes reaction process more sufficient, accelerates reaction rate, improves treatment effect;Meanwhile, it is convenient to quickly replace and supplement reaction reagent on packing shelf, and operation is simple.

The invention relates to the technical field of oil and gas fracturing flow-back fluid treatment, and particularly discloses a boron-doped diamond electrode electrooxidation system and method for treating fracturing flow-back fluid. According to the method for treating the fracturing flow-back fluid, before the fracturing flow-back fluid enters an electrooxidation unit, sulfide is efficiently removed, poison and competitive oxidation of the fracturing flow-back fluid to an electrode are eliminated, a BDD electrode is protected, a foaming agent is synchronously removed through aeration enrichment, the problem of foam interference in the flow-back fluid treatment process is fundamentally solved, and continuous and stable operation of a system is guaranteed; after the electro-oxidation unit, active chlorine (pypocholoride / chlorine) is effectively removed and recycled, so that waste is treated by waste, the oxidation efficiency is improved, and the dosage of chemicals is reduced. Through the collaborative design, the interference and foam problems of sulfide with high chloride ion content and strong reducibility are collaboratively optimized, and the treatment efficiency, economical efficiency and stability of the system are integrally improved.

The utility model provides a kind of micro-nano ozone oxidation wastewater treatment device, it is related to wastewater treatment technical field, including cabinet, the two sides inner wall of cabinet are uniformly connected with two trapezoidal long plate, the top inner wall of cabinet and the bottom of trapezoidal long plate are equally spaced and installed with ultraviolet lamp, the two side walls of cabinet and located above trapezoidal long plate are all equipped with square hole, the side wall of cabinet and located at square hole are all fixedly connected with ring plate.The utility model in the present application, liquid pump drives wastewater circulation, reciprocating flow in cabinet by liquid suction pipe and liquid outlet pipe, cooperate trapezoidal long plate guide, wastewater spreads on the plate and flows, ultraviolet lamp irradiates from top, plate bottom multidimensional, covers deep layer wastewater, oxidation of refractory substance is more thorough, reflector enhances ultraviolet reflection, driving motor, fan blade accelerates gas-liquid exchange, ozone and wastewater are fully integrated, micro-nano bubble expands reaction interface, improves oxidation efficiency, and COD / TOC removal rate is significantly improved.

The invention relates to an oxidation reaction extraction device for producing hydrogen peroxide, the oxidation reaction extraction device comprises an oxidation extraction tower, an oxidation liquid separator, an extraction tower, a coalescer and a dehydrator, the top of the oxidation extraction tower is provided with a hydrogenation liquid inlet for introducing a hydrogenation liquid to be oxidized from the tower top, and the lower part of the oxidation extraction tower is provided with an oxygen-containing gas inlet for introducing an oxygen-containing gas from the tower bottom; a dilute hydrogen peroxide inlet is formed in the middle-lower part of the tower body and positioned above the oxygen-containing gas inlet, and is used for introducing a dilute hydrogen peroxide for extraction from the middle-lower part of the tower body, so that an oxidation extraction process of whole-tower countercurrent oxidation and tower-bottom parallel flow extraction is formed; according to the scheme, high oxidation efficiency, high extraction efficiency and low extraction reverse mixing can be guaranteed at the same time.

The utility model relates to the technical field of aeration devices, and provides an oxidation aeration device which comprises a box body and a stirring structure, a water inlet pipe is fixed on one side of the top end of the box body, a water outlet pipe is fixed on one side of the bottom of the box body, an aeration structure is arranged at the bottom end in the box body, and a stirring structure is fixed on the top end of the box body. The stirring structure is arranged, a motor is started to drive a rotating pipe to enable a connecting pipe to rotate so as to stir liquid in the box body, meanwhile, oxygen is conveyed into the rotating pipe and the connecting pipe through a second air conveying pipe, and then the oxygen is output outwards through an air outlet hole; furthermore, liquid and oxygen are fully mixed in the stirring process, bubbles are prevented from floating too fast, the gas retention time is further prolonged, and the oxidation efficiency is improved.

The invention discloses a desulfurization ash resource utilization process which comprises the following steps: performing magnetic separation on desulfurization ash, and mixing with water to obtain first desulfurization ash slurry; adding a mixed solution of sodium acetate and hydrochloric acid, reacting to obtain second desulfurized fly ash slurry with acidic pH, and collecting CO2 generated in the reaction process; introducing air to oxidize the second desulfurized fly ash slurry at the temperature of 60-80 DEG C, and stirring to react to obtain third desulfurized fly ash slurry; performing solid-liquid separation on the third desulfurized fly ash slurry to obtain solid calcium sulfate and a mixed solution of calcium acetate and sodium chloride; adding sodium carbonate into the mixed solution of calcium acetate and sodium chloride, and performing solid-liquid separation after reaction to obtain solid calcium carbonate and the mixed solution of calcium acetate and sodium chloride; a mixed solution of calcium acetate and sodium chloride is collected and circularly used for preparing the first desulfurized fly ash slurry. According to the method, the resource utilization process of the desulfurized fly ash is optimized, generation of harmful gases such as sulfur dioxide and ammonia gas is avoided, and valuable calcium sulfate and calcium carbonate products are obtained.

The utility model relates to a kind of multi-directional fixed oxidation hanger in the technical field of oxidation hanger, comprising: installation top plate, its top end is symmetrically provided with threaded mounting hole;Fixed through-hole, it is symmetrically provided in the top end edge of the installation top plate;Connecting installation top block, it is by bolt in the top end middle part of the installation top plate;Electric telescopic rod, it is fixed in the top end of the connecting installation top block;Connecting hanger mechanism, it is movably inserted in the inboard of the fixed through-hole;Fixed reinforcing mechanism, it is by bolt in the top of the installation top plate, by the mutual cooperation between the installation top plate, fixed through-hole and connecting hanger mechanism being provided, can be connected and assembled between installation top plate and connecting hanger mechanism in actual use process, can be connected between installation top plate in multidirection, can be mounted to multiple workpieces, improve the oxidation efficiency of overall, it is convenient and fast to operate.

The invention relates to the technical field of aluminum beam preparation, and discloses a high-strength long-span oxidized conductive aluminum beam and a preparation method thereof. The high-strength long-span oxidized conductive aluminum beam is prepared through the following steps of (1) extrusion to obtain an aluminum beam outer body, (2) extrusion to obtain an aluminum beam insertion core, (3) insertion, (4) stretching, (5) saw cutting and (6) end sealing, the aluminum beam outer body is made of 1-series or 6-series aluminum alloy, the aluminum beam insertion core is made of 7-series aluminum alloy, and after saw cutting, an aluminum plate made of the same material as the aluminum beam outer body is welded to the end of the aluminum beam in a full-circle mode to obtain the high-strength long-span oxidized conductive aluminum beam. Compared with the prior art, the strength and rigidity are remarkably improved, and the method has remarkable advantages in the aspects of material cost, electrochemical corrosion, oxidation efficiency and the like. The invention provides a new thought and method for the design and production of the long-span aluminum oxide beam, and has a wide application prospect.

The application discloses a treatment system for treating strongly complexed heavy metal wastewater in an electroplating industry, comprising an oxidation reaction tank, a Fenton-like reaction tank, a homogenizing adjusting tank, a chemical mixing tank, a No. I flocculation tank, a No. I sedimentation tank, a heavy metal adsorption tank, a No. II flocculation tank, a No. II sedimentation tank and a clean water tank which are connected in sequence; wherein, the bottom of the No. II sedimentation tank is provided with two sludge discharge ports, one of which is connected with the heavy metal adsorption tank through a sludge backflow pipeline, and the other is connected with a regeneration system. The application also discloses a method for treating strongly complexed heavy metal wastewater in the electroplating industry based on the treatment system. The method adopts the process of first oxidizing and breaking the complex, then adding alkali to precipitate, and finally modifying zeolite to adsorb, so that the electroplating strongly complexed heavy metal wastewater can be treated, the concentration of heavy metal ions in the effluent can be stably reduced to below 0.1 mg / L, and the discharge standard can be reached.

The invention relates to a preparation method of a gelidium amansii nano-cellulose-based antifouling coating, which comprises the following steps: S1, mixing a choline chloride-carboxylic acid eutectic solvent with gelidium amansii residues, and heating in an oil bath to obtain gelidium amansii cellulose; s2, the gelidium amansii cellulose is sequentially subjected to cellulase enzymolysis treatment and TEMPO oxidation method treatment, and gelidium amansii nanocellulose is obtained; s3, putting the gelidium nanocellulose and octadecylamine into an ethanol water solution according to a certain mass ratio, carrying out ultrasonic dissolution, adding a certain mass of dopamine hydrochloride, adjusting the pH value, and carrying out heating reaction polymerization at a certain temperature for a certain time by virtue of a one-pot method, so as to obtain the gelidium nanocellulose-based super-hydrophobic coating. And S4, finally, adding a certain mass of EGCG, and uniformly stirring to obtain the gelidium amansii nanocellulose-based antifouling paint. The invention not only provides an effective method for reutilization of the gelidium amansii residues, but also develops a novel bio-based antifouling coating through a green chemical technology, and makes a contribution to sustainable development of related industrial fields.

This invention provides an improved processing method for laterite nickel ore. The improved method includes: Step S1, acid leaching followed by filtration and washing of the laterite nickel ore to obtain a post-leaching solution and a first leaching residue; Step S2, where Step S2 is selected from any one of Steps S2-1, S2-2, and S2-3; Step S3, using a precipitant to perform a first-stage precipitation of nickel and cobalt in the solution after aluminum and scandium removal or iron and aluminum removal, followed by thick filtration to obtain a first-stage precipitated nickel and cobalt solution and nickel and cobalt hydroxide product; Step S4, using a nickel and cobalt neutralizing agent and an oxidizing agent to perform a second-stage precipitation of nickel and cobalt in the first-stage precipitated nickel and cobalt solution to obtain magnesium manganese sulfate solution and nickel-cobalt-manganese slurry. Traditional processes utilize compressed air to oxidize ferrous iron, resulting in energy waste. This application uses manganese-containing substances as an oxidizing agent to oxidize ferrous iron to ferric iron, which not only solves the problem of slow oxidation rate of ferrous iron at low pH and waste of compressed air, but also improves the scandium recovery rate.

The invention relates to the technical field of phosphorus chemical industry, in particular to a method for removing an organic solvent in raffinate acid, which comprises the following steps: mixing the heated raffinate acid with an oxidant, and carrying out oxidation reaction at 90-100 DEG C; the temperature of the heated raffinate acid is 60 to 120 DEG C. According to the method, the oxidizing agent is adopted to oxidize the residual organic solvent in the raffinate acid, the organic solvent in the raffinate acid is decomposed into CO2 and H2O, solvent volatilization is effectively eliminated, and no volatile solvent is generated on site in the pretreatment process; metal ions such as Fe < 2 + > in the raffinate acid are effectively utilized as an oxidation catalyst, the use amount of an oxidizing agent is reduced, the oxidation efficiency is improved, the removal rate of volatile organic solvents in the raffinate acid can reach 100%, and the total TOC removal rate can be greater than 90%.

The application belongs to the technical field of chemical foils, and particularly relates to a preparation method of a chemical foil for an aluminum electrolytic capacitor, comprising the following steps: S1, pretreatment: placing an etched aluminum foil in a hydrazine hydrate solution, and performing a pretreatment reaction under the action of ultrasonic waves to obtain a pretreated aluminum foil; and S2, performing multi-stage anodic oxidation and chemical formation and post-treatment on the pretreated etched aluminum foil to obtain a chemical foil. The preparation method can reduce the chemical formation energy consumption while improving the electrical performance of the chemical foil.

The invention belongs to the technical field of oxidation furnaces, and particularly relates to an oxidation furnace device for preparing copper oxide from regenerated copper powder and an oxidation process thereof.The oxidation furnace assembly comprises a furnace body, a first driving mechanism and an air inlet pipe, the first driving mechanism is used for driving the furnace body to rotate, and a plurality of stirring blades are spirally arranged on the inner wall of the furnace body; a heater is arranged in the furnace body, a valve is arranged on the side wall of the furnace body, one end of the air inlet pipe is communicated into the furnace body, the crusher assembly comprises a crushing bin, a rotor and an impact part, the rotor is rotatably arranged in a crushing cavity, the impact part is arranged on the rotor and used for colliding with materials, and a collision plate is arranged on one side of the rotor and used for colliding with the materials. By adopting the oxidation furnace device and the oxidation process steps, the oxidation time is reduced from 8 hours to 4 hours, the treatment energy consumption is reduced from 800 kWh to 400 kWh, and the energy consumption is reduced by about 50%; and the method has the advantages of low energy consumption, high oxidation efficiency and high copper oxide purity.

The invention relates to a photoelectrochemical treatment method and device, and belongs to the technical field of petroleum and petrochemical sewage treatment and reuse, the treatment method comprises the following steps: carrying out flocculation pretreatment on sewage to obtain a supernatant; carrying out photoelectrochemical reaction on the supernate to obtain reacted sewage; and carrying out adsorption treatment on the reacted sewage to obtain discharged water. According to the treatment device disclosed by the invention, the gas-liquid filter screen is arranged, so that gas-liquid foam is prevented from overflowing and the influence on the reaction of an added medicament and sewage is avoided; the photoelectrochemical reactor adopts a tubular structure, so that the concentration of pollutants in the reactor can be kept uniform, and the reaction rate is stable without dead angles; the arrangement of the gas-liquid-foam extraction opening realizes the suction of gas-liquid foam, can timely dredge and discharge gases such as chlorine, oxygen and ammonia gas generated in oxidation reaction and foam generated by polymer reaction in sewage, keeps the pressure balance in the photoelectrochemical reactor, and avoids the influence of the gas-liquid foam on the full contact of the treatment liquid and the electrode plate at the same time.

The invention relates to the technical field of roasting devices, in particular to a gasification filter residue roasting device which comprises a roasting furnace body, a feeding pipe is fixedly inserted into the upper end of the roasting furnace body, a discharging seat is fixedly mounted at the lower end of an inner cavity of the roasting furnace body, and a discharging pipe is fixedly inserted into the bottom of the discharging seat. The lower end of the discharging pipe downwards penetrates through the bottom of the roasting furnace body and extends to the outside, a Z-shaped chain bucket conveyor is installed near the roasting furnace body, a feeding port of the Z-shaped chain bucket conveyor is connected with a discharging port of the stock bin, and the side face of the roasting furnace body is connected with a cyclone separator through a pipeline; the gasification furnace has the beneficial effects that the output shaft of the variable frequency motor firstly drives the center shaft to rotate clockwise or anticlockwise, and the center shaft drives the material spreading mechanism to rotate clockwise or anticlockwise along the upper end of the furnace hearth, so that a material spreading push plate in the material spreading mechanism can uniformly spread and turn over gasification filter residues, and the gasification filter residues can be uniformly heated; and the roasting and oxidizing efficiency and effect of the gasified filter residues are improved.

The utility model relates to the technical field of aeration devices, in particular to an aeration device for biological enzyme fermentation, which comprises a tank body, the top of the tank body is in threaded connection with a closing cover, a breather pipe is provided with a plurality of vent holes, the closing cover is provided with an opening and closing component above the breather pipe, and the bottom of the tank body is provided with a positive and negative motor. The output end of the forward and reverse motor penetrates into the tank body and is fixedly connected with a rotating rod, the rotating rod is provided with an external thread, the rotating rod is in threaded connection with a sleeve with an internal thread, the bottom of the sleeve is fixedly connected with a cross, the middle of the sleeve is rotatably connected with an annular block, the outer side of the annular block is fixedly connected with a plurality of fan blades, and the top of the sleeve is provided with an aeration pipe; by means of the mode, gas can be input into the tank body in order, materials and the gas are evenly fused, the reaction efficiency of the materials is improved, reaction precipitates on the inner wall of the tank body can be scraped, the interior of the tank body can be conveniently overhauled and maintained, and the use convenience of the device is improved.