1347 results about "Ozone" patented technology

The invention provides a particulate matter and ozone source monitoring method and system based on a distributed sensor, and relates to the technical field of pollution treatment. According to the invention, sensor nodes with geographic perception capability are deployed in a monitoring area in a high-density manner, pollutant concentration and meteorological parameters are collected in real time, and data are uploaded to a cloud platform for preprocessing and dynamic calibration; a machine learning model is constructed based on the combined features of the pollutants and the meteorological factors, a driving relation is mined, and pollutant influence factors are extracted; further performing joint modeling on the influence factors and regional emission source data, identifying the coupling strength between pollutants and emission sources by adopting a classification or clustering method, and judging the categories of main sources; backward trajectory simulation, source fingerprint analysis and multi-source regression decomposition are combined to realize pollution path inversion and source contribution rate quantification; and finally, constructing a geographic information visualization platform, displaying a pollution thermodynamic diagram, a contribution change diagram and an evolution path diagram, and providing support for multi-source pollution traceability and scientific management and control.

The invention relates to the field of pollution source analysis, and discloses a formaldehyde pollution source analysis and ozone influence quantification method and system for coupling a receptor model and a box-type model, and the method comprises the steps: collecting the concentration of formaldehyde and other pollutants in urban atmosphere in real time through online monitoring equipment, and carrying out abnormal value marking and data standardization processing; performing source analysis on the processed data based on a positive definite factor matrix method to generate a pollution source contribution matrix; converting the source contribution matrix into a molecular concentration input file which can be recognized by the box-type model; embedding a free radical circulation mechanism into the box-type model, and executing photochemical simulation under different pollution source scenes; and generating a pollution source contribution heat map based on a simulation result, and outputting management and control suggestions through a deep learning model. The method has the following effects: by coupling the receptor model and the box type model, not only can different pollution sources of formaldehyde be determined, but also the influence of each pollution source on ozone generation through photochemical reaction can be analyzed.

The invention relates to the technical field of ozone precursor traceability, in particular to an ozone precursor collaborative traceability method and system based on a knowledge graph, and the method comprises the following steps: obtaining precursor concentration change, recognizing an abnormal path, extracting path characteristics, carrying out standardized scoring, adjusting graph connection strength, and analyzing sequence offset to obtain collaborative nodes. And screening origin nodes in combination with time sequence meteorology to generate an origin node list. According to the method, pollution response channels are identified through precursor node concentration changes and path connection relations, focusing of key paths is enhanced, paths are scored based on multi-dimensional indexes, connection attributes are dynamically adjusted in combination with monitoring period ozone response intensity, map structure updating is achieved, and concentration response sequence offset is analyzed; according to the method, nodes with co-evolution characteristics are screened, the stable relation identification capability is improved, the path reasonability is evaluated by combining a release time sequence and meteorological conditions, the initial source positioning accuracy is improved, and the response speed and the identification precision of precursor tracing are integrally enhanced.

The invention discloses an anti-aging water-stop belt and a preparation method and application thereof, and relates to the technical field of water-stop belts. The invention relates to an anti-aging water-stop belt which is prepared from the following raw materials in parts by mass: 40-60 parts of chloroprene rubber, 10-20 parts of natural rubber, 10-20 parts of ethylene propylene diene monomer, 15-30 parts of carbon black, 5-15 parts of white carbon black, 5-15 parts of a plasticizer, 0.5-2 parts of sulfur, 0.5-1.5 parts of an accelerant, 1-2 parts of an anti-aging ultraviolet light absorber, 5-15 parts of aluminum hydroxide, 1-3 parts of stearic acid and 3-8 parts of zinc oxide. The obtained water-stop belt has excellent ultraviolet aging resistance, ozone resistance and chemical corrosion resistance while keeping high elasticity, the mechanical stability of the water-stop belt is remarkably improved compared with that of a traditional product, the water-stop belt is suitable for joint sealing in harsh environments such as bridges, tunnels and water conservancy projects, and the waterproof service life of engineering structures can be effectively prolonged.

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 provides an atmospheric fine particulate matter and ozone optimization control method, and relates to the technical field of environmental control, and the method comprises the steps: collecting the mass concentration of PM2.5 and O3 of a target city, an emission reduction policy and precursor emission data of each pollution source; dividing the target city into a VOCs control area and a VOCs and NOx cooperative control area according to the ozone sensitivity; based on an EKMA curve, obtaining an optimal emission reduction proportion of a precursor of each control region; calculating the control potential of different pollution sources VOCs and NOx of the target city, and establishing an O3 concentration optimization control constraint equation set; calculating PM2.5 sensitivities of different areas of the target city to the receptor points, dividing the target city into a plurality of grade sensitive areas, and establishing a PM2.5 optimization control constraint equation set; and solving the equation set to obtain an O3 and PM2.5 optimization emission reduction scheme. According to the invention, a refined PM2.5 and O3 pollution emission reduction scheme is provided from the city scale.

To provide a method and a device for producing a hydrocarbon that use microbubbles capable of more efficiently reducing carbon dioxide to synthesize the hydrocarbon. Provided is a method for producing a hydrocarbon by dissolving carbon dioxide as microbubbles and dissolving a gas that generates active oxygen as microbubbles in water, generating active oxygen by irradiating the water containing microbubbles of the gas that generates active oxygen with ultraviolet rays in the presence of a photocatalyst, and bringing the microbubbles of the carbon dioxide into contact in the presence of the active oxygen to reduce the carbon dioxide. The microbubbles of the gas that generates active oxygen are dissolved in the water at 10 to the power of 8 / mL or more, the microbubbles of carbon dioxide are dissolved in the water at 10 to the power of 8 / mL or more, and the gas that generates active oxygen contains ozone.

An ozone generating cell includes a corona discharge chamber with a curved side wall. The cell includes a high-voltage electrode, a ground electrode, and a dielectric material positioned between the high-voltage electrode and the ground electrode. The cell includes a gas channel formed between the dielectric material and the ground electrode. The channel has a first end in fluid communication with a gas opening in the dielectric material, which is in fluid communication with a gas port. The channel has a second end in fluid communication with another gas port. The channel further includes multiple concentric segments between the first and second ends of the channel.

The invention relates to the field of air conditioning and purification, in particular to a low-radiation plasma air purification generator and a control system thereof.According to the low-radiation plasma air purification generator and the control system thereof, through the structural design that the intensity of a three-level gradient electric field is gradually enhanced in the gas flowing direction, and in combination with an extended contact path of an S-shaped purification air duct, the air purification efficiency is improved; the reaction time and action intensity of plasma and pollutants are effectively improved, operation information is collected in real time, quantitative analysis is carried out, and operation of the air purification generator is subjected to standardized control, so that operation of the air purification generator can be automatically adjusted; the operation effect of the air purification generator is improved, ionizing radiation and ozone generation are restrained, and the air purification generator is prevented from damaging surrounding electronic equipment and the body health of people.

The invention is suitable for the technical field of pollutant monitoring, and provides an ozone generation rate monitoring system and method, the system comprises a zero gas generation module, a gas distribution module, a multi-mode combination switching valve, a free radical generation source, a chemical amplification cavity and a detection module; the gas distribution module is used for inputting standard reactant gas with different components and sample gas sample; the input end of the multi-mode combined switching valve is connected with the zero gas generation module and the gas distribution module; a first output end of the multi-mode combined switching valve is connected with a gas inlet of the free radical generation source, a second output end is connected with a gas inlet of the chemical amplification cavity, and a third output end is connected with a gas outlet of the chemical amplification cavity; an exhaust port of the free radical generation source is connected with an air inlet of the chemical amplification cavity; and the exhaust port of the chemical amplification cavity is also connected with the detection module. According to the method, the ozone photochemical generation rate is directly obtained by accurately measuring data such as the total peroxy free radical concentration, the detection precision is higher, and the speed is higher.

The invention relates to the technical field of water treatment, and discloses a water treatment recycling system which comprises a pretreatment unit, a membrane treatment unit, a deep treatment unit and a recycling unit. The pretreatment unit is used for removing large-particle impurities through a grating, a grit chamber and a coagulative precipitation tank; the membrane treatment unit comprises an ultrafiltration and reverse osmosis membrane assembly and a matched membrane cleaning system; the advanced treatment unit purifies water by means of ozone-ultraviolet combined oxidation and mixed ion exchange resin; and the recycling unit is provided with a monitoring and flow control device. In addition, the system is provided with an intelligent control system, real-time monitoring can be achieved, parameters can be automatically adjusted according to the water quality, and efficient and stable water treatment and recycling are achieved. The system has the advantages that the structure and function of each treatment unit are optimized, the water treatment efficiency and quality are improved, the operation cost is reduced, efficient recycling of water resources is realized, and meanwhile, the problems of membrane pollution and difficulty in removal of refractory organic matters in the prior art are solved.

Disclosed herein is a drone docking station for deposit of items / goods delivered by a drone to a secured receptacle. Items are delivered to a receptacle at a curb, mailbox, post, porch, mobile units, and windows for a multi-parcel receptacle with a set of drawers with hot and cold sections in the station that has a specific residential / commercial address with various optional features. Features include communication systems between the station and drone; security; hot and cold temperature control and preservation of the goods before and after delivery; battery charging and exchange station; a collector to identify explosive materials, anthrax, etc.; ultraviolet system to eradicate disease, virus and harmful materials; an ozone applicator to eradicate disease, virus and harmful materials; weather monitoring; tag and track of vehicles and packages; facial recognition camera and software for pets and humans; and local two-way speakers; LED lights that strobe flash, and a flood light.

The invention discloses a high-precision cold stamping printing one-piece flow process. The process comprises the following steps that S1, surface cleaning is conducted on a printing stock; s2, the surface of the printing stock is coated with UV glue in an ink-jet printing mode; s3, after coating is completed, low-energy UV is adopted for pre-curing, and the energy density is lt; the thickness is 50mJ / cm, and forming a semi-cured adhesive layer; s4, the cold stamping film is attached to the UV glue through an air cushion type pressing roller, then UV full curing is conducted, the cold stamping film is peeled off after curing, and the pattern is reserved on the printing stock; s5, performing color ink overprinting on the hot-stamped pattern to obtain a printed product; and S6, on-line detection and slitting are conducted on the printed matter. According to the high-precision cold-stamping printing one-piece flow process, the whole process is completed in an on-line mode, step-by-step operation is not needed, the production efficiency can be remarkably improved, micron-order pattern control can be achieved through ink-jet coating glue, complex patterns are supported, the glue utilization rate is higher, cold-stamping films are only locally transferred, the waste film rate is reduced, ozone is not generated through LED-UV curing, and the production cost is reduced. And the device is more environment-friendly and lower in energy consumption.

The ozone membrane and ozone ultraviolet combined catalytic oxidation device comprises a base, the two sides of the upper portion of the base are connected with the two sides of the lower portion of a lower shell in a fastened mode through matching of fastening bolts and nuts, and the upper portion of the lower shell is integrally connected with an upper shell. The two sides of the upper portion of the upper shell are in fastened connection with the two sides of the end cover through cooperation of fastening bolts and nuts, a center pipe is longitudinally arranged in the center of the interior of the lower shell and the upper shell after the lower shell and the upper shell are integrally connected, a PTFE hollow fiber membrane is arranged on the outer portion of the center pipe in the circumferential direction, and casting areas are arranged at the upper end and the lower end of the PTFE hollow fiber membrane correspondingly. An ozone channel is arranged between every two adjacent PTFE hollow fiber membranes, a membrane oxidation gas-water mixing outlet is formed in the corresponding position of the central pipe below the PTFE hollow fiber membranes, an ultraviolet generator is arranged above the central position in the central pipe, and the top end of the ultraviolet generator penetrates through an end cover and is fixed on the end cover through a fastening bolt; and the top of the ultraviolet generator is connected with an ultraviolet generator power supply.

The utility model discloses a food additive sterilization processing machine, which relates to the technical field of food processing and comprises a support frame, the top of the support frame is fixedly connected with a sterilization bin mechanism, the top of the sterilization bin mechanism is fixedly connected with a turning mechanism, and the top of the support frame is fixedly connected with an ozone sterilization mechanism. Through the arrangement of the ozone sterilization mechanism, when a food additive is sterilized, bacteria in the food additive are killed under the action of strong oxidation of ozone, so that the food additive is prevented from being melted due to conventional high-temperature sterilization, and the food additive is more convenient to use; the food additives at the bottom of the inner cavity of the bin body are continuously conveyed upwards, the food additives falling along the material falling disc are scattered under the action of the stirring rod and the scattering rod, the food additives are turned over more evenly, sterilization is more comprehensive, meanwhile, the ultraviolet sterilization lamp is arranged, auxiliary sterilization can be conducted on the food additives, and the sterilization effect is further improved.

The utility model discloses a miniature ozone electrode module structure, relates to the technical field of miniature ozone generation, and is used for solving the problems of complex structure, large volume and low ozone generation efficiency of an ozone generator at the present stage. According to the utility model, the polar plates directly act in an aqueous solution through the ozone electrode module with a direct insertion shell structure, generated ozone does not directly act in the shell, the overall service life is prolonged, and meanwhile, a two-cathode and one-anode clamping type polar plate structure is adopted, so that the distance between the polar plates is controlled, and bubbles generated between the polar plates are effectively separated; meanwhile, the reaction spacing can be reduced as much as possible, the ohmic resistance of the reaction is reduced, reactants can be provided for the electrode reaction in time, the electrolytic mass transfer efficiency is also improved, the electric field distribution around the anode is more uniform, and meanwhile, the equipment is miniaturized and integrated, so that the production efficiency is improved. The method is suitable for application scenes with high requirements for space and cost.

The invention provides a preparation method of a perovskite solar cell, and belongs to the field of perovskite solar cells, and the preparation method comprises the following steps: S1, pretreating a transparent conductive substrate; s2, spin-coating the surface of the transparent conductive substrate with a nanoparticle dispersion liquid, and carrying out annealing treatment to obtain a flattened transparent conductive substrate; soaking the leveled transparent conductive substrate in a hydrogen peroxide solution with the concentration of 1-3%, washing and drying, and then carrying out ultraviolet ozone treatment to obtain a hydroxyl modified leveled transparent conductive substrate; s3, spin-coating a hole transport layer on the surface of the hydroxyl modified and flattened transparent conductive substrate; s4, spin-coating a perovskite light absorption layer on the surface of the hole transport layer; s5, spin-coating an electron transport layer on the surface of the perovskite light absorption layer; and S6, evaporating an electrode layer on the surface of the electron transport layer. According to the invention, the photoelectric conversion efficiency of the perovskite solar cell is significantly improved through leveling and hydroxylation treatment of the substrate.

The invention relates to the technical field of functional paper production, in particular to a pressing and flat pasting composite process of skin-touch surface polymer coated paper, which comprises the following steps: pretreating a base material through low-temperature plasma to form a nano groove; the preparation method comprises the following steps: preparing a bottom coating solution containing sulfydryl modified polyurethane and other components, a middle coating layer containing a carbon nanotube forest and a surface coating solution containing a fluorosilicone block copolymer, and sequentially coating, drying and curing; the coated paper and the base material treated by the silicon dioxide transition layer are compounded after being subjected to vacuum hot pressing and steam treatment, and then are subjected to ultraviolet ozone treatment, so that the comprehensive performance is improved. According to the process, by innovating a coating formula and a compounding technology, the wear resistance, pollution resistance and touch performance of the coated paper are remarkably improved, and the functions of antibiosis, temperature sensing adjustment and the like are achieved; the gloss is adjustable, the adhesive force is high, the VOCs emission is low, the environmental protection property is good, and the multi-element requirements of the high-end market are met.

According to the cationic UV-LED and moisture dual-curing three-proofing adhesive provided by the invention, on the basis of original UV-LED curing, moisture curing is introduced as a synergistic curing mechanism, a UV-LED moisture dual-curing three-proofing adhesive system is jointly formed by combining modified dual-curing resin, an epoxy active diluent, a cationic photoinitiator, an auxiliary agent and the like, an oxygen inhibition effect does not exist, and the moisture dual-curing three-proofing adhesive has the advantages that the moisture dual-curing three-proofing adhesive has a good curing effect; under the adhesive film thickness of 50-200 microns, the cured surface is dry and comfortable and does not adhere to dust or other impurities, the defect that the surface of a traditional mercury lamp curing type UV three-proofing adhesive adheres to hands when an LED lamp is cured is overcome, the curing process is low in energy consumption, electricity is saved, the three-proofing adhesive can be used instantly after being opened, damage to heat-sensitive devices is effectively avoided, no ozone is generated in the whole process, and the three-proofing adhesive is environmentally friendly and safe.

The invention discloses an electric flame stove capable of eliminating ozone. The electric flame stove comprises a stove body, a magnetic energy box mounted at the upper end of the stove body and a burner mounted in the stove body, and a magnetron is arranged at the microwave emission port in the magnetic energy box. The high-frequency electromagnetic wave is adopted to excite the initial plasma, so that the temperature and efficiency of the electric flame are improved, and the high-temperature cooking requirements such as stir-frying in a kitchen are met; the reaction between active particles (oxygen ions O or oxygen atoms O) in plasma and ozone is accelerated by adopting high-frequency electromagnetic waves, and finally ozone molecules are decomposed and reduced, so that ozone overflow is inhibited; in a non-pot state, the density of the plasma in the double hearths is small, the microwave switch is switched off, the magnetron stops working, and microwave leakage is completely eradicated from the source; the cooling tank is annularly distributed on the side wall of the second hearth to form a continuous gas barrier surrounding the second hearth, so that the magnetron and the side wall of the second hearth are prevented from being influenced by ultrahigh temperature.

The invention relates to the technical field of composite heat wave ozone event evaluation, in particular to a composite heat wave ozone event refined identification method, which comprises the following steps: acquiring two types of preprocessed observation daily scale data sequences; performing percentile conversion on the preprocessed observation daily scale data sequence to obtain a percentile sequence; calculating the rising rate of the observation data in the development stage according to the percentile sequence; determining a pollution event of the to-be-identified area and a plurality of characteristic values of the pollution event through the rising rate; and if the pollution event is a non-independent composite heat wave ozone event, combining the non-independent composite heat wave ozone event by adopting an IC method to obtain a new combined composite heat wave ozone event. According to the invention, the accuracy of composite heat wave ozone event identification is improved by determining the rising rate and combining the non-independent composite heat wave ozone event.

The invention discloses a production process of an energy-saving and environment-friendly food packaging bag. The production process is realized through the following steps: S1, pretreatment of raw materials: carrying out physical activation treatment on a bio-based composite material; s2, multi-layer co-extrusion film blowing: precisely controlling the extrusion temperature in stages by adopting a gradient temperature control film blowing technology; s3, water-based ink printing, wherein water-based UV ink is used for flexographic printing; s4, ozone-ultraviolet synergetic sterilization: after the packaging bag is formed, the packaging bag enters a closed sterilization cabin to be sterilized; s5, slitting and forming: slitting the film into a customized size by adopting a laser slitting machine in a layered cutting mode, enhancing the interface bonding force through a bio-based composite material pre-activation technology, and reducing the use of an adhesive; the temperature of the three-layer structure is accurately regulated and controlled by adopting a gradient temperature control film blowing process, so that uniform compounding is realized; ozone permeation and ultraviolet photolysis are combined to realize synergistic sterilization, so that secondary pollution is avoided; and a biological enzymolysis recovery system is established to convert the waste into a PLA raw material, so that closed-loop production is formed.

The invention relates to the technical field of air purification, and discloses a space air particle differentiation system and a control method thereof.The space air particle differentiation system comprises an air particle separation module and a control module, the air particle separation module comprises an air inlet, a cyclone separation barrel and a detachable dust collection barrel, the cyclone separation barrel separates particles in air through centrifugal force classification, and the separated particles fall into the bottom dust collection barrel; the ultraviolet catalysis module comprises an ultraviolet reaction chamber, the inner wall of the ultraviolet reaction chamber is coated with a photocatalyst, and a UV-C light source is configured and used for decomposing organic pollutants and microorganisms; the electron-ozone reaction module comprises a mixed flow pipeline fan and an exhaust port, the mixed flow pipeline fan forms negative pressure airflow in the system, and purified air is exhausted through the exhaust port. Through cooperation of cyclone separation, ultraviolet catalysis and electron-ozone reaction, large particles are removed through cyclone separation, organic matter is decomposed through ultraviolet catalysis, microorganisms and superfine particles are oxidized and decomposed in a reaction chamber through electron flow and ozone, the maintenance period is prolonged, and efficient consumable-free purification is achieved.

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment process and device.The waste gas treatment device comprises a waste gas filter cartridge, an acid washing tower, an alkaline washing tower, an ultraviolet decomposition device and an adsorption tower, the ultraviolet decomposition device and the adsorption tower are arranged in parallel, waste gas is filtered through the waste gas filter cartridge, then absorbed through the acid washing tower and the alkaline washing tower and then subjected to ultraviolet photolysis oxidation, and redundant ozone is absorbed; the process is high in treatment efficiency, low in operation cost and free of secondary pollution to the environment, in addition, the waste gas filter cartridge cleans the filter plate through cooperation of the cleaning assembly and the knocking block, the filter plate is prevented from being blocked, the waste gas treatment efficiency is further improved, and the waste gas treatment cost is reduced. A plurality of partition plates are driven to rotate when a support frame in the ultraviolet decomposition device rotates, and the waste gas in the shell is further stirred, so that the waste gas is in full contact with ultraviolet light, and the ultraviolet photolysis efficiency of the waste gas is further improved.

The invention relates to the technical field of yoghourt fermentation, in particular to a control method of a yoghourt cabinet. Comprising the following steps: initial parameter configuration: setting target temperature, fermentation duration, heat preservation temperature and heat preservation duration of yoghourt fermentation through an electronic temperature control unit; performing composite disinfection treatment: performing staged sterilization operation through an ultraviolet generation unit, dynamically adjusting ozone generation amount by an ozone generation unit through a self-adaptive fuzzy PID composite algorithm, and performing sterilization treatment on the space in the yoghourt cabinet and the yoghourt products; temperature dynamic regulation and control: the temperature in the yogurt cabinet is monitored in real time, and the electrifying duty ratio is regulated through a heating unit by adopting a fuzzy PID algorithm. According to the invention, the electronic temperature control unit is combined with a dynamic duty ratio regulation mechanism, so that the temperature in the yogurt cabinet is stably maintained in an optimal fermentation interval, the problem of unstable fermentation environment caused by temperature fluctuation in a traditional control method is effectively improved, and a constant temperature condition is provided for yogurt fermentation.

An electrostatic separator or precipitator through which an air stream to be cleaned of particles flows in a longitudinal direction includes at least one electrospray ionization source, which is supplied with a positive potential and can be implemented, for example, by the tips of a graphite fiber bundle, and a collector unit arranged downstream for particle separation and having parallel collector and driver plates. The ion flow from the corona zone is additionally homogenized and spread by an upstream collector element, in particular a collector grid, upstream of the at least one electrospray ionization source, so that high particle separation rates can be achieved with minimal ozone emissions. Alternatively, or in addition, the ion flow from the corona zone can be homogenized downstream of the at least one spray ionization source by one or more border counter-electrodes.

The invention relates to the field of intelligent control, and particularly discloses an organic waste gas purification treatment system and method.The organic waste gas purification treatment system is characterized in that waste gas is preliminarily filtered through a filter screen, then ozone is catalyzed through an ozone catalyst, volatile organic compounds (VOCs) in the filtered waste gas are preliminarily oxidized, and then the waste gas is purified through a water purification system. According to the method, the VOCs waste gas subjected to preliminary oxidation is further oxidized by adopting an ultraviolet radiation nano photocatalyst, the VOCs waste gas is converted into micromolecular organic matters which are easier to biodegrade, the concentration of the VOCs in the waste gas is monitored in real time, and the rotating speed of a fan is dynamically adjusted according to monitoring data, so that the purification efficiency and the optimal running state of the system are ensured.

The invention relates to an advanced oxidation printing and dyeing wastewater treatment process, and belongs to the technical field of sewage treatment. The method comprises the following steps: adding an aluminum oxide catalyst into to-be-treated printing and dyeing wastewater in a reactor, and stirring; adding an auxiliary agent, and mixing and stirring; adding an oxidizing agent potassium monopersulfate into the obtained mixed solution and stirring; under the irradiation of an ultraviolet light source, continuously introducing ozone prepared by an ozone generator into the reactor for stirring reaction. Pollutants such as refractory dyes and organic auxiliaries in the printing and dyeing wastewater are efficiently removed under mild conditions, the COD removal rate of effluent reaches 90% or above, the chroma removal rate reaches 90% or above, and the quality of the effluent meets the requirements of subsequent treatment or up-to-standard discharge.

The invention relates to the technical field of solar cells, in particular to a preparation method of a perovskite thin film, which comprises the following steps: sequentially carrying out ultrasonic cleaning on etched transparent conductive glass by using a preset solution, drying in a forced air drying oven, and carrying out ultraviolet ozone treatment to obtain a transparent conductive oxide substrate; placing the transparent conductive oxide substrate in a glove box in a nitrogen atmosphere to prepare a hole transport layer; adding the perovskite precursor material into a corresponding solvent in a preset proportion, and then stirring and oscillating to obtain a perovskite precursor solution; and spin-coating the perovskite precursor solution on the hole transport layer by using a spin coater, dropwise adding an anti-solvent during spin-coating, and placing the obtained perovskite light absorption film layer on a heating stage for annealing after spin-coating is finished, the insulation metal oxide nanoparticles and the self-assembly monomolecular material are doped in the anti-solvent, so that the absorption of incident light by the perovskite thin film is improved, and the defect of the perovskite thin film at the grain boundary is passivated.

The invention belongs to the technical field of photovoltaics, and particularly relates to a preparation method for improving UV attenuation of a TopCon battery. The invention relates to a preparation method for improving UV attenuation of a TopCon battery. The preparation method comprises the following steps: a previous step and an improved RCA process, wherein in the RCA process, ozone water is used for cleaning after two times of water washing and one time of acid washing, an oxide layer is formed, and a subsequent step is carried out. According to the invention, in the aspect of UV attenuation resistance, ultraviolet rays can be effectively blocked, the UV attenuation rate of a battery piece and a component is obviously reduced, the stability of the battery is greatly improved, the service life is prolonged, the battery piece is passivated, the newly added oxide layer can prevent excess hydrogen elements from entering the battery piece, unstable passivation bonds are prevented from being formed, the passivation effect is optimized, the electronic load is reduced, and the service life of the battery piece is prolonged. The process is good in compatibility, only a small number of procedures are adjusted, seamless connection with an existing production line can be achieved, cost is controllable, and wide application and popularization in the industry are easy.