26results about How to "Improve oxidation capacity" patented technology

The invention belongs to the technical field of photocatalysts, and particularly discloses a CoMo6 / Fe3O4 (at) ZnO composite material and a preparation method and application thereof.The photocatalytic mechanism of the prepared CoMo6 / Fe3O4 (at) ZnO composite material is as follows: after the composite material CoMo6 / Fe3O4 (at) CeO2 is excited by light, photo-induced electrons on CoMo6 are transferred to the surface of Fe3O4 (at) ZnO, meanwhile, photo-induced holes absorb an electron donor H2O on the surface of POM polyanions to react to generate. OH, and the CoMo6 / Fe3O4 (at) ZnO composite material is obtained. The. OH free radical with strong oxidation capability oxidizes eosin B to generate oxidation products such as CO2 and the like. In the experiment, a small amount of electrons absorb an electron acceptor O2 and reduce the electron acceptor O2 to generate. O2 <->, and the two free radicals act at the same time to promote the photocatalytic reaction. When a magnetic field is added outside, the oxidation capacity and rate of. OH are also accelerated, so that the degradation rate of eosin B is improved; the highest degradation rate on an eosin B dye can reach 92.21%; after an external magnetic field is applied, the degradation rate is obviously accelerated, and the reaction is almost complete 40 minutes after illumination is started.

The application discloses a nuclide synthesis hot chamber convenient to clean and a cleaning method thereof, which comprises a synthesis chamber, an exhaust mechanism arranged on the top of the synthesis chamber, and a cleaning mechanism arranged on the inner side of the synthesis chamber. The synthesis chamber comprises a synthesis cavity, a partition plate arranged in the synthesis cavity, and an ultrasonic cleaner arranged at the bottom of the partition plate. The ultrasonic cleaner is arranged in a plurality of pieces and is fixedly connected to the bottom of the partition plate uniformly. A laser three-dimensional scanner is fixedly connected to the top of the synthesis cavity. The exhaust mechanism comprises a gas storage cavity, a main pipeline arranged on one side of the gas storage cavity, and a gas conveying assembly arranged in the gas storage cavity. The main pipeline is used for conveying the gas in the gas storage cavity to the synthesis chamber and exhausting the residual gas in the synthesis chamber. The cleaning mechanism is mainly used for conveying cleaning liquid to the synthesis chamber to clean the synthesis chamber. The combination of nitrogen and ultrasonic waves improves the cleaning degree of the synthesis chamber and reduces the residual toxic gas.

The application relates to a method for controlling edge grain defect of oriented silicon steel, characterized in that the method comprises the following steps: coating a set amount of grain defect control slurry in a set range of the inner ring and / or the outer ring of the upper end face and / or the lower end face of an oriented silicon steel coil to reduce the edge grain defect occurrence rate of the oriented silicon steel; and covering the whole end face of the upper end of the steel coil with a metal cover plate on the upper end cover of the steel coil. The method coats the grain defect control slurry in a certain area of the upper and / or lower end face of the steel coil, so that the grain defect control slurry can increase the local interlayer oxidation of the strip steel at high temperature, and then increase the bottom layer reaction, so as to control the width and length of the edge grain defect.

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 application discloses a kind of hollow plate carbon membrane water treatment device and water treatment method thereof.Hollow plate carbon membrane is parallelly assembled in the order of anode and cathode, and membrane assembly is immersed in water tank when operating.Anode carbon membrane is connected with water pump through permeate pipe, and cathode carbon membrane is connected with aeration device through aeration pipeline.Water treatment method is as follows: wastewater to be treated is added into reaction tank through water inlet, power supply is started, and aeration device is opened to carry out cathode carbon membrane aeration.Cathode generates electrofenton reaction, generates ·OH to degrade organic pollutants in water.Then water pump is started, and wastewater is permeated from anode carbon membrane surface to channel, and further oxidizes and degrades pollutants under the action of anode electrocatalytic oxidation.Processed water reaches water outlet through filtration from anode carbon membrane channel.The water treatment device is suitable for advanced treatment of organic wastewater, and has the characteristics of easy assembly, easy cleaning and easy scale use.

The invention relates to the technical field of automobile exhaust purification and discloses a catalytic oxidation catalyst as well as a preparation method and application thereof. The invention relates to a catalytic oxidation catalyst, which comprises a carrier, a first coating and a second coating, the carrier is a regular structure carrier; the first coating comprises first cerium-zirconium composite oxide and / or first modified aluminum oxide and first precious metal, and the first precious metal is Pd and / or Pt; the second coating comprises at least one of a transition metal oxide, a second cerium-zirconium composite oxide and a second modified alumina, and a second noble metal, the second noble metal is Pd or Pt, the total amount of the first noble metal and the second noble metal is not higher than 20g / cft by element on the basis of the total amount of the catalyst, and the catalyst does not contain a molecular sieve. According to the catalyst, coating distribution is optimized based on reaction chemical characteristics in the tail gas treatment process, the effect of reducing the total content of precious metal is achieved, and wide application prospects are achieved.

This invention discloses a method for improving the bioleaching efficiency of heavy metal contaminated soil using a carbon rod electrode system modified with graphene oxide (GO). The invention involves preparing a carbon nanomaterial, GN-GO, from traditional graphene rod electrodes using a GO suspension through a multiple soaking and drying process. The GN-GO material is then used as the anode, and the unmodified graphene rod electrode as the cathode. The anode and cathode, connected to an external power source via wires, are placed in a container containing a culture medium and a heavy metal contaminated soil sample. An acclimatized bacterial strain is then introduced, and leaching is performed at 25–30°C and 120–150 r / min. This invention improves the conductivity and specific surface area of ​​the electrode by altering the electrode surface structure of the bioelectrochemical system, while simultaneously optimizing the biocompatibility of the electrode material. The method combines electrochemical and biological approaches, resulting in high remediation efficiency and good remediation effects for heavy metal contaminated soil.

The application discloses a kind of adjustable defect sub-nanometer gold load nickel iron composite photoanode catalyst, preparation method and application, deionized water is introduced into nitrogen and is deoxidized, multi-walled carbon nanotube treated by strong acid is placed in deionized water after deoxidation, after ultrasonic dispersion is uniform, together with FeCl2, NiCl2, HMT and ammonium fluoride is added into reaction kettle, reaction is carried out at 120 DEG C for 6 hours, after cooling, it is taken out, using deionized water is filtered, washed after, HAuCl4 is quickly added, sealed and is stirred in dark room, after reaction is finished, it is filtered, washed, nitrogen is dried at room temperature and is preserved in oxygen-free atmosphere.The application is synthesized Au / NiFe (hydroxyl) oxide / CNT composite catalyst by in-situ oxidation technology one step.The method can be simultaneously controlled on the basis of heterojunction Defects, the synergistic effect of both makes the catalyst performance be further optimized.Synthesis method is simple and direct, and catalytic effect is obviously improved.

The invention relates to the field of waste gas purification, and discloses a composite metal oxide catalyst, a preparation method and application thereof, and a method for synergistically purifying carbon monoxide and volatile organic compounds. The invention relates to a composite metal oxide catalyst, the catalyst comprises manganese oxide and M metal oxide, the M metal is selected from at least one of Fe, Co, Ni, Cu, Zn, Ag, Zr and Mo; wherein in the catalyst, the defect oxygen accounts for not less than 15% of the oxygen species in the catalyst. The composite metal oxide catalyst provided by the invention is applied to synergistic purification of carbon monoxide and volatile organic compounds, and has the advantage of good removal effect of carbon monoxide and volatile organic compounds.

The invention discloses an integrated device and method for removing hardness and COD (Chemical Oxygen Demand) of high-salt-content wastewater, and solves the problems of high construction cost, large occupied area, multiple control points and poor water quality fluctuation adaptability in the existing high-salt-content wastewater softening treatment process. The upper end of the outer bin body is open, and the two first water pumps are arranged outside the outer bin body; two parallel vertical partition plates are arranged in the outer bin body and divide the interior of the outer bin body into three parallel areas, namely a first area located in the middle and two second areas located on the two sides of the first area respectively. A biochemical component is arranged in the first area and is used for removing COD (Chemical Oxygen Demand), ammonia nitrogen, total phosphorus and suspended matters in the to-be-treated high-salinity wastewater; a softening assembly and an oxidizing assembly are arranged in the second area; the softening assembly is used for removing the hardness of calcium and magnesium in the to-be-treated high-salt-content wastewater; and the oxidation assembly is used for removing COD in the to-be-treated high-salt wastewater again.

The utility model provides a horizontal conveying device between the conductive groove and oxidation groove for roll stock anodic oxidation, including groove body device, and groove body device includes conductive groove and oxidation groove, be provided with first passageway in one side of conductive groove, be provided with second passageway in one side of oxidation groove, be provided with first water press roller mechanism outside first passageway, and first water press roller mechanism includes first water press roller group, and first water press roller group includes two first water press rollers, and there is first conveying passageway between two first water press rollers, be provided with second water press roller mechanism outside second passageway, and second water press roller mechanism includes second water press roller group, and second water press roller group includes two second water press rollers, and there is second conveying passageway between two second water press rollers, and first conveying passageway and second conveying passageway horizontal setting, utilize the structure of the utility model, when the roll stock being unwound is horizontally conveyed through conductive groove and oxidation groove, can effectively avoid the liquid mutual stringing between conductive groove and oxidation groove, improves oxidation effect.

The utility model discloses a domestic sewage circulation treatment device based on biological treatment, which comprises a treatment pond, a feeding box is arranged above the treatment pond, and a discharging mechanism for feeding materials at a constant speed is arranged in the feeding box; four mounting plates are fixedly mounted at the upper end of the treatment pond, and a reciprocating mechanism for reciprocating motion of the feeding box is arranged between the two mounting plates; and an aeration mechanism for rolling sewage is arranged on the side wall of the feeding box. According to the utility model, the reciprocating mechanism, the discharging mechanism and the aeration mechanism are combined, so that the feeding box can change the position periodically, materials can uniformly cover different areas of the treatment pond, and meanwhile, the treatment pond can be subjected to comprehensive aeration treatment. By means of the design, the processing efficiency is improved, and the situation of local excessive processing or insufficient processing is avoided.

A device and method for deep treatment of organic matter in reverse osmosis membrane filtration concentrate from coal chemical industry are disclosed. This invention relates to a device and method for treating membrane filtration concentrate, aiming to solve the technical problems of easy scaling, high energy consumption, and long treatment time in existing membrane filtration concentrate treatment methods. The device of this invention includes a heat exchanger, an advanced oxidation tank, an electrocoagulation coupled electro-oxidation tank, and a sedimentation tank connected in sequence. A persulfate dosing system is connected to the advanced oxidation tank. Simultaneously, the electrocoagulation coupled electro-oxidation tank and the sedimentation tank are connected to the advanced oxidation tank via reflux pipes. Through the combination of advanced oxidation and electrocoagulation coupled electro-oxidation, thermal activation and Fe... 2+ Ion activation generates sulfate free radicals, which react with existing chloride ions to produce active chlorine. This oxidizes and degrades recalcitrant organic matter in the reverse osmosis concentrate, reducing scaling problems in subsequent evaporation and crystallization systems and completely separating organic matter from the crystalline salt. This invention can be used in the field of wastewater treatment.

The invention belongs to the technical field of sound-sensitive agents, and particularly relates to a calcium-titanium inorganic sound-sensitive agent as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving calcium salt in an acetic acid solution, adding C16H36O4Ti, mixing, and reacting at 150-170 DEG C to obtain Ca < 2 + >-TiO2 nanoparticles; the preparation method comprises the following steps: adding Ca < 2 + >-TiO2 nanoparticles into an aqueous solution containing a cationic surfactant to obtain slurry, mixing a graphene suspension with the slurry, carrying out ultrasonic treatment, and purifying and drying to obtain a Ca < 2 + >-TiO2 / graphene compound; and adding the Ca < 2 + >-TiO2 / graphene compound into a lysine aqueous solution to obtain Lys-Ca < 2 + >-TiO2 / graphene powder, namely the calcium-titanium inorganic sound-sensitive agent. The calcium-titanium inorganic sound-sensitive agent has excellent specific surface area and electron-hole separation efficiency, the free radical generation rate is remarkably increased, and the oxidation effect is enhanced; the prepared floating type calcium-titanium inorganic sound-sensitive agent can be naturally distributed on the water surface and is convenient to recycle.

The present disclosure provides an etching solution, a GaN material etching method and a gallium nitride transistor manufacturing method, and belongs to the technical field of semiconductors. The etching solution comprises a tetramethylammonium hydroxide solution and an oxidizing agent, the concentration of the tetramethylammonium hydroxide solution is 0.1-2.0 mol / L, and the concentration of the oxidizing agent is 0.01-0.5 mol / L. The present disclosure can improve the etching effect of GaN materials.

The invention discloses a method for removing metal pollutants by advanced oxidation enhanced filtration, which comprises the following steps: mixing raw water to be treated containing manganese pollutants with peroxymonosulfate, carrying out ultraviolet radiation, and carrying out oxidation reaction to obtain an oxidized water body; the oxidized water body is filtered through quartz sand, manganese pollutants are removed through reaction, and the purified water body is obtained. By adopting a method of coupling peroxymonosulfate, ultraviolet radiation and quartz sand filtration, the originally mild peroxymonosulfate can be converted into a relatively active oxidation system, the efficient oxidation of the manganese pollutants is realized, the required treatment time is short, and the treatment cost is low. The deep removal of manganese pollutants in low-concentration raw water can be realized under the conditions that a complexing agent is not added, an expensive special adsorbent is not used and a complex filter material is not used.

This invention belongs to the field of water pollution control, specifically involving an oxidation process for high-concentration, high-salinity chemical wastewater. The process involves pretreatment of the wastewater, adjusting the pH to 3-4, adding slow-release iron salts, then adding polyacrylamide to produce flocculation, followed by filtration; then adding hydrogen peroxide to react, adjusting the pH to 8-9, adding a coagulant, and filtration; finally, adding hydrogen peroxide again to react, adding a coagulant, and filtration. The coordination complex of ferric iron catalyzes the generation of ·OH from hydrogen peroxide, oxidizing and removing COD. The highly stable complex of ferric iron is utilized to achieve Fenton-like oxidation and complex breaking under alkaline conditions, realizing Fe... 3+ The three-stage utilization of salts weakens the quenching effect of high concentrations of chloride ions and other salts on free radicals, thereby improving the degradation efficiency of target organic matter and making this invention applicable to complex chemical wastewater. A specially formulated slow-release iron salt is used, which can slowly release Fe... 3+ This avoids the defect of excessively rapid initial consumption, thus allowing free radicals to be continuously generated and improving the oxidation effect.

This invention discloses a method for the synergistic treatment of hexavalent chromium and sulfadiazine complex wastewater. The method utilizes a bimetallic node coupled with a metal-organic framework derivative electrode for the synergistic treatment of hexavalent chromium and sulfadiazine complex wastewater. The electrode includes a conductive substrate coupled with ZrO2 and ZnO. In this invention, the bimetallic node coupled with a metal-organic framework derivative electrode is used as the working electrode. The resulting photoelectrocatalytic system has advantages such as strong light utilization, fast electron transfer efficiency, and strong conversion effect between complex free radical chemistry and different active substances. It can not only achieve the synergistic degradation of hexavalent chromium and sulfadiazine in wastewater, but also simultaneously and efficiently remove both hexavalent chromium and sulfadiazine from the wastewater. It has advantages such as good recyclability, high removal efficiency, good cycle performance, and strong practical application, making it a widely applicable photoelectrocatalytic method with high practical value and application prospects.

This invention discloses a method for remediating heavy metal contaminated soil using an iron-based nanocomposite modified electrode combined with a microbial electrochemical system. The method involves first preparing a suspension of Fe₃O₄ and GO, then uniformly coating the surface of a graphite rod with Fe₃O₄ and GO using a soaking-drying method to obtain an iron-based nanocomposite modified electrode. The modified electrode is then used as the anode, and the unmodified graphite rod electrode as the cathode. The anode and cathode are connected by wires and placed in a galvanic cell containing a culture medium and heavy metal contaminated soil. A domesticated microbial strain is then introduced for leaching. The modified electrode prepared using iron-based nanocomposite materials exhibits excellent electrochemical performance, high compatibility with microorganisms, and demonstrates good remediation performance for heavy metal contaminated soil through a combination of electrochemical and biological methods.

The utility model relates to sewage treatment technical field discloses a kind of efficient energy-saving ultrahigh concentration ozone catalytic oxidation reaction systems, including pry platform, PLC cabinet, recycling module and mixed reaction module, the PLC cabinet, recycling module and mixed reaction module are respectively fixed on pry platform upper end, the recycling module includes oxygen generator, oxygen outlet pipe, ozone generator, oxygen backflow pipe, two gas flowmeters, ozone outlet pipe, backflow control valve and gas-liquid separator, the oxygen generator is connected between oxygen outlet pipe, the ozone generator is connected between gas-liquid separator by ozone outlet pipe, the gas-liquid separator gas outlet end is provided with ozone output pipe, the oxygen backflow pipe both ends are respectively connected in oxygen output pipe upper end and gas-liquid separator gas inlet end. In the utility model, the efficiency and cost of high COD sewage treatment are improved, and the effect of removing pollutants in water is improved.

The present application relates to the technical field of metal material surface treatment, and particularly relates to a 780MPa-grade hot-dip galvanized dual-phase steel coating bonding force strengthening method, which comprises the following steps: soaking a base material in a plating solution to perform three-stage temperature rising continuous annealing, pre-oxidation, hydrogen reduction, two-stage temperature lowering, post-plating cooling, and obtaining the strengthened hot-dip galvanized dual-phase steel coating; the base material composition is as follows: C<=0.18%, Mn 1.75-2%, Si 0.35-0.45%, P 0.02-0.035%, Cr 0.35-0.45wt%, Nb 0.015-0.03%, Als 0.02-0.06%, Y 0.01-0.014%, and Nb / Y is 1.1-3, according to 100% mass percentage. The scheme solves the problems of uneven structure, poor interface bonding force, poor continuity of the inhibition layer, unstable corrosion resistance, and poor surface of the existing hot-dip galvanized DP780 steel coating.

This invention belongs to the field of air purification materials technology, specifically relating to a high-purity spherical zinc oxide-silica synergistic photocatalytic air purification material. By weight, it comprises 100 parts of silica-coated high-purity spherical zinc oxide, 1-3 parts of a silanized porphyrin trifluoromethyl functional polymer, 2400-2950 parts of ethanol, 101.5-204 parts of deionized water, and 0.006-0.06 parts of glacial acetic acid. The high-purity spherical zinc oxide-silica synergistic photocatalytic air purification material prepared by this invention exhibits improved interface stability, a broadened spectral response range, and pollutant degradation capabilities.

The utility model relates to the technical field of industrial environmental protection, in particular to a wet-type limestone / lime-gypsum method two-stage circulation desulfurization device which comprises a desulfurization tower and further comprises a liquid accumulation disc arranged in the desulfurization tower and used for dividing the desulfurization tower into a lower circulation desulfurization area and an upper circulation desulfurization area. The pH value in the lower circulating desulfurization area is 4.0-5.0, the pH value in the upper circulating desulfurization area is 5.5-6.0, and a lower slurry spraying layer is arranged in the lower circulating desulfurization area. According to the utility model, a relatively independent double-circulation desulfurization system is formed in one desulfurization tower, and the desulfurization of flue gas is jointly completed by the double-circulation desulfurization system. And a single-tower double-region desulfurization system solves the problems that the pH values of slurry required by absorption and oxidation are different, the pH value of slurry for absorbing acid gases such as SO2 is higher and is about 5.5, and the pH value of an oxidation crystallization region is required to be lower than 5.0, so that the effects of improving the desulfurization rate and improving the utilization rate of an absorbent are achieved by using the double-region method.

The application discloses a kind of hazardous waste chemical industrial wastewater zero discharge graded purification treatment equipment, including sequentially connected pretreatment mechanism, catalytic treatment mechanism, hierarchical precipitation separation mechanism, biological treatment mechanism and membrane separation mechanism;Pretreatment mechanism includes grid intercepting mechanism, grid intercepting mechanism includes grid intercepting containing shell, vertically extending grid support ring shell is fixed in grid intercepting containing shell, a plurality of inner and outer communication and vertically extending grid mounting slot are formed on the side wall of grid support ring shell, and filter grid is installed in grid mounting slot;The equipment can quickly and effectively remove solid particles, colloid and other suspended solids in hazardous waste chemical industrial wastewater, and the grid discharging mechanism can clean the filter grid in time, maintain the effective filtering capacity of the filter grid;Catalytic treatment mechanism can occur a series of oxidation reactions with organic pollutants in wastewater, and gradually decompose organic pollutants into carbon dioxide, water and other harmless inorganic substances.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a synthetic method of 4-methyl-5-thiazoleethanol. According to the invention, 2-mercapto-4-methyl-5-thiazoleethanol is used as a basic raw material and is effectively dissolved in ethyl acetate, and under the action of the catalyst and in a microbubble system, the reaction time is shortened, the oxidation effect is greatly improved, and the yield and quality of the product are enhanced.

The invention discloses a method for synthesizing methyl benzoate, monosubstituted methyl benzoate and dimethyl furan-2, 5-dicarboxylate through a photocatalytic oxidation esterification one-pot method. According to the method, cobalt phthalocyanine / B / P co-doped g-C3N4 Z-type heterojunction is taken as a visible light active photocatalyst, air is taken as a molecular oxygen source, a 300W xenon lamp is taken as a light source, and methyl benzoate, series monosubstituted methyl benzoate and 2, 5-dihydroxymethylfurfural are synthesized from benzyl alcohol or series monosubstituted benzyl alcohol or 5-hydroxymethylfurfural and methanol through a one-step photocatalytic oxidation esterification one-pot method under the conditions of room temperature and normal pressure. The invention discloses a novel green and low-carbon synthesis process of dimethyl furandicarboxylate. The synthesis method has the characteristics of atom economy of a synthesis route, cheap and wide sources of raw materials, direct use of air as an O2 source, high activity of a catalytic system, good selectivity, recyclability of the catalyst and the like.