296results about How to "Good benefit" patented technology

The invention relates to the technical field of valve internal leakage identification, aims to solve the problem of low leakage rate prediction precision in valve internal leakage acoustic emission detection, and discloses a nuclear power valve internal leakage detection method based on acoustic emission signal time-frequency characteristics. Extracting the characteristics of the time domain, the frequency domain and the time-frequency domain of the leakage signal, analyzing the linear relation between the characteristics and the leakage rate of the valve, and predicting the leakage rate and the leakage grade. According to the invention, remote online detection can be carried out on the internal leakage state of the valve, meanwhile, the internal leakage rate of the valve is predicted, the safety of maintenance personnel is guaranteed, the scheme feasibility is high, the measurement is accurate, the applicability is high, the improvement of automation and intelligence levels is facilitated, and good practicability and safety benefits are achieved.

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

The remediation method for the moderately and severely cadmium-polluted rice field aims at strictly controlled cadmium-polluted rice fields, and is divided into two stages of strict control and safe utilization for remediation. In the strict management and control stage, an activating agent is applied to the soil in spring, then microalgae are inoculated, cadmium-enriched plants are planted, the plants are collected after being full of the microalgae, the plants are harvested when the plants grow to the enrichment extreme value, stubbles are reserved for growth, and the steps are repeated till winter; applying an activating agent in winter, planting green manure, and harvesting in spring in the next year; the process is cyclically carried out until the cadmium content of the soil is reduced to a safe utilization level. Entering a safe utilization stage, applying an activating agent in spring, inoculating nitrogen-fixing cyanobacteria, collecting the cyanobacteria after the cyanobacteria overgrow, and repeating the steps until the rice seedlings are transplanted; applying nitrogen-fixing blue-green algae, and planting rice; applying an activating agent after rice harvesting, planting winter green manure, and harvesting in next spring; the process is cyclically carried out until the cadmium content of the soil is reduced to a preferential protection level. The method is low in cost, high in remediation efficiency and good in effect, and a new way is provided for cadmium-polluted rice field remediation.

The invention discloses abrasion-resistant concrete based on industrial waste residues and a preparation method of the abrasion-resistant concrete. The abrasion-resistant concrete is prepared from 1050 to 1200 parts by weight of coarse aggregate, 480 to 550 parts by weight of coarse sand, 135 to 210 parts by weight of tungsten slag, 300 to 360 parts by weight of Portland cement, 75 to 90 parts by weight of superfine tungsten slag powder, 1 to 1.5 parts by weight of high-performance water reducing agent and 140 to 160 parts by weight of water, the tungsten slag is obtained by drying industrial waste tungsten slag generated by producing ammonium paratungstate at 80 DEG C to constant weight, the superfine tungsten slag powder is obtained by grinding the tungsten slag, and the fineness of the superfine tungsten slag powder is 1%-5% of screen residue of a 45-micron screen; the coarse aggregate is formed by mixing small stones with the particle size of 5-20 mm and medium stones with the particle size of 20-40 mm. Through the combined action of the tungsten slag, the superfine tungsten slag powder and the Portland cement, the overall abrasion resistance of the concrete is improved, the problem of cyclic utilization of the tungsten slag industrial waste residues is solved, and meanwhile it is guaranteed that the workability of the concrete is not reduced.

The utility model relates to the technical field of foundation treatment construction, in particular to an automatic pounder hooking recognition and compaction settlement measurement device for a dynamic compaction machine. Comprising a stay wire type altimeter, an automatic unhooking mechanism and a hook head mechanism, and the hook head mechanism comprises a hook head drag hook, a pressure sensor connected to the outer side of a hook head rotating shaft and a hook head pressure spring connected to the outer side of the upper end of the hook head drag hook; the automatic unhooking mechanism comprises an automatic unhooking starting device connected to the upper portion of the hook head protrusion, and the stay wire type altimeter is connected to the upper end of the automatic unhooking starting device. The device is simple in structure, reasonable in design and convenient to use, not only can realize automatic unhooking, but also can realize state monitoring, can accurately measure the compaction settlement, saves the labor intensity, improves the working efficiency, and creates better economic value and economic benefit.

The invention discloses a mountainous region photovoltaic panel strong-wind-resistant swing suppression device which comprises a fixed base provided with a plurality of mounting holes, a stand column assembly with one end rotatably connected with the fixed base, a photovoltaic panel mounting frame comprising a plurality of transverse supporting beams and longitudinal supporting beams, and a windproof inhaul cable assembly comprising at least three inhaul cables. And the wind direction sensor is mounted at the top of the photovoltaic panel mounting frame. Comprising the following steps of site preparation, fixed base installation, stand column assembly installation, photovoltaic panel installation frame assembling and installation, windproof inhaul cable assembly installation, sensor and controller installation and debugging and detection. The height and the angle of the stand column assembly can be flexibly adjusted according to the actual terrain and installation requirements, and it can be ensured that the device achieves the expected strong-wind-resistant swing restraining effect through debugging and detection steps after installation.

The present invention relates to the technical field of information system integration, and in particular to an ERP system launch method. The method comprises the following steps: obtaining ERP demand data; performing ERP related function module analysis according to the ERP demand data to generate ERP related function modules; performing ERP system architecture analysis based on the ERP related function modules to establish the ERP system architecture; obtaining historical enterprise source data; performing historical enterprise decision feature analysis based on the historical enterprise source data to generate historical enterprise decision feature data; performing intelligent business practice engine design based on the historical enterprise decision feature data to generate an intelligent business practice engine; performing intelligent business practice function configuration processing of the system architecture on the ERP system architecture based on the intelligent business practice engine to generate an ERP system, and transmitting the ERP system to a cloud server to execute the ERP system launch operation. The present invention realizes intelligent business management of the ERP system.

The present invention belongs to the technical field of plate processing, and discloses a coating device for producing rock wool boards; it includes a pair of conveyor belts installed on the inner wall of a conveyor frame, and the top of the conveyor belt is respectively provided with a coating roller and a plurality of conveying rollers, and the conveying rollers are used for conveying, heating and film pressing, and both ends of the coating roller are rotated with a first connecting frame, and a pair of the first connecting frames are fixedly connected to the top of the conveyor frame, and the coating device also includes: a scraper, and the scraper is arranged on the outside of the coating roller. This device realizes the operation of the reciprocating mechanism driven by the sprocket drive through the structural design of the reciprocating mechanism, the scraper and the glue collecting box, so that the scraper moves back and forth to scrape off the glue accumulated on the edge of the coating roller, thereby avoiding glue waste, and realizing the operation of scraping glue evenly, improving the uniformity of glue coating, and the glue collecting box effectively collects the scraped glue, thereby avoiding glue contamination of the conveyor belt, reducing maintenance costs, extending the service life of the conveyor belt, and improving production efficiency.

The invention discloses a three-cable photovoltaic flexible support system, belongs to the technical field of photovoltaic supports, and can solve the problems that a traditional fixed photovoltaic support cannot be used and installed under complex mountain conditions, the land use efficiency is reduced, and the overall photovoltaic power generation capacity is affected. The system comprises two end fixing units which are symmetrically arranged at the two ends of an erection area; the middle supporting units are distributed between the two end fixing units in a row; one ends of the first main cable and the second main cable are connected with one end fixing unit, and the other ends of the first main cable and the second main cable sequentially penetrate through the two ends of the tops of the middle supporting units and are connected with the other end fixing unit; two ends of the bottom edges of the inverted tripods are respectively fixed on the first main rope and the second main rope; one end of the auxiliary cable is connected with one end fixing unit, and the other end of the auxiliary cable sequentially penetrates through the vertexes of the inverted triangular supports and the middles of the tops of the middle supporting units to be connected with the other end fixing unit. The invention is used for supporting the photovoltaic module.

The invention provides a preparation method and application of a modified chitosan derivative and nanoparticles thereof. The modified chitosan derivative is prepared by modifying chitosan with nitrogen-containing heterocyclic ring small molecules; the modified chitosan derivative nano-particles are prepared by electrostatic compounding of a modified chitosan derivative on an electronegative substance. The modified chitosan derivative and the nano-particles thereof have relatively strong immune activation capability on immune cells, and also can enhance the immunogenicity of tumor cells and effectively regulate the immune microenvironment of solid tumors. When the modified chitosan derivative and the nano-particles thereof are used in combination with radiotherapy, the modified chitosan derivative and the nano-particles thereof have relatively high tumor treatment efficiency.

The invention discloses a recommendation optimization method based on multi-modal feature clustering, and aims to improve diversity and user experience of a recommendation system. According to the method, firstly, features are extracted from a commodity title and a cover picture through a text and visual feature extraction model, and text and visual feature representation is obtained; then, the features are subjected to feature alignment and standardization processing to ensure the consistency of different modal features, and then the features are fused into a multi-modal embedded vector to serve as unified feature representation of commodities. And then, clustering is carried out on the fused multi-modal embedded vectors by using a K-Means clustering algorithm, so that clustering identifiers of the commodities can be formed. In the recommendation process, the system monitors the clustering identifiers of the displayed commodities, adjusts the recommendation strategy according to the identifiers, and preferentially recommends the commodities of different clusters from the displayed commodities, so that excessive distribution of similar contents is avoided, and the diversity of the recommended contents is ensured. According to the method, by integrating multi-modal information, the performance of a recommendation system is optimized, and the problem of excessive distribution is effectively solved.

The invention belongs to the technical field of solid waste recycling, and particularly relates to an all-solid waste alkali-activated cementing material and a preparation method thereof. The all-solid waste alkali-activated cementing material disclosed by the invention is prepared from the following components in parts by weight: 60 to 140 parts of fly ash, 200 to 360 parts of slag, 5 to 45 parts of carbide slag, 45 to 180 parts of regenerated micro powder, 30 to 70 parts of alkali activator, 45 to 225 parts of organic monomer and 120 to 260 parts of water, the adhesive further comprises a cross-linking agent and an initiator. According to the all-solid waste alkali-activated cementing material, the utilization rate of solid waste resources such as construction waste can be increased, carbon emission in industrial production can be reduced, the strength and toughness of the material are improved while the dosage of the alkali activator is reduced, and the all-solid waste alkali-activated cementing material is wide in application range.

The utility model provides an electric anastomat with a manual reset structure, which relates to the technical field of surgical medical instruments and comprises a shell, a nail box component, a transmission component and a reset driving part. The nail box assembly is arranged in the shell; the transmission assembly is arranged on the support and comprises a first transmission part and a second transmission part, the second transmission part is connected with the nail box assembly, and the first transmission part drives the nail box assembly through the second transmission part; the reset driving part is movably arranged on the support, the reset driving part is provided with a working position, and when the reset driving part moves to the working position, the reset driving part is in transmission connection with the second transmission part and pushes the first transmission part to be separated from the second transmission part. According to the anastomat, the manual reset structure is simplified, the manufacturing and production assembly cost of the manual reset structure is reduced, and the anastomat has good industrial value and economic benefits.

The invention discloses a biomass porous carbon electrode material, a preparation method thereof and application of the biomass porous carbon electrode material in a room-temperature sodium-sulfur battery, and belongs to the technical field of preparation of a room-temperature sodium-sulfur battery positive electrode material.The biomass waste is pretreated and then pre-carbonized, then a pore-forming agent is added for mixing, ball milling and activation, a hydrochloric acid solution is added, heating and stirring are conducted, and cleaning and suction filtration are conducted to obtain the biomass porous carbon electrode material. And mixing the biomass porous carbon material with sulfur powder, and carrying out heat treatment so as to obtain the biomass porous carbon electrode material. The positive electrode is activated by a chemical reagent, has a multi-stage pore structure and inhibits the volume expansion of the positive electrode in a physical mode. According to the present invention, the large pores are beneficial to the passing of electrolyte ions, the mesopores can ensure the high sulfur loading amount, and the small pores can provide the extremely high specific surface area and the large adsorption volume, such that the shuttle effect caused by the conversion of the polysulfide in the room temperature sodium-sulfur battery can be effectively solved, and the actual specific capacity and the rate capability of the room temperature sodium-sulfur battery can be improved;

The invention discloses a multi-stage coordinated regulation and control method and system for a virtual power plant, and the method comprises the steps: carrying out the quantitative description of an adjustable space of various distributed devices in the virtual power plant through a unified modeling method, and building an evaluation model of real-time output and response capabilities; aiming at the problem of online coordinated scheduling between the virtual power plant and the power distribution network, a centralized-distributed hierarchical scheduling structure is adopted, and the scheduling efficiency of the system and the response capability of equipment are effectively improved through unified modeling and hierarchical optimization. According to the method, the total operation cost of the virtual power plant can be effectively reduced, the problem of comprehensive information sharing needed by traditional centralized scheduling is avoided through privacy protection design, efficient interaction and information safety between the virtual power plant and the power distribution network are achieved, the requirement for real-time economic scheduling in a complex scene can be met, and high expandability and adaptability are achieved. And meanwhile, the method accords with the development direction of optimal dispatching of the current power distribution network, and plays a crucial role in promoting energy structure transformation and accelerating renewable energy consumption.

A terminal block screw mounting station mechanism comprises a storage structure and a mounting structure which are arranged on the side face of a terminal block machining rail, and the mounting structure comprises a mounting support and a mounting first connecting block connected to the mounting support through a mounting horizontal rail. The installation horizontal driving device drives the installation first connecting block to move along the installation horizontal track, the installation second connecting block is connected to the installation first connecting block through the installation vertical track, and the installation vertical driving device drives the installation second connecting block to move along the installation vertical track. The placing structure is connected to the second connecting block and extends out of the wiring terminal processing track; the storage structure comprises a storage bracket and a storage base; a plurality of screw placing grooves are formed in the storage base, and screws move towards the wiring terminal processing track in the screw placing grooves; the placing structure takes out the screws from the storage structure and then loads the screws into the wiring terminal base. According to the utility model, the screw placement process of the wiring terminal is completed in a full-automatic manner.

The invention discloses a bipolar plate for a water electrolyser with an annular water inlet, and relates to the technical field of water electrolysis hydrogen production, the bipolar plate comprises a pole frame area and a pole plate reaction area, the pole frame area is internally provided with an electrolyte flow field, a diversion trench, a liquid inlet and a liquid outlet, and the electrolyte flow field is of an annular structure surrounding the center of the bipolar plate; the annular structure enables water flow to uniformly enter each area of the polar plate reaction area through the diversion trenches, an annular flow channel is arranged on the outer side of the liquid inlet and is divided into an inner flow channel and an outer flow channel, the outer flow channel is communicated with the liquid inlet, and the diversion trenches communicated with the inner flow channel are uniformly distributed in the inner flow channel. The water inlets are arranged around the bipolar plate, so that water flow is uniformly distributed, the cooling efficiency is improved, the phenomenon of local overheating or insufficient cooling is reduced, the electrolyte is uniformly distributed on active sites on the surface of the motor, the electrolytic efficiency of the electrolytic water tank is improved under the high current density, and the device is suitable for various electrolytic tank systems; and the universality and the adaptability are improved.

The invention discloses a cluster optimization regulation and control method and system for a low-voltage distributed photovoltaic access power distribution network, and the method can automatically remove dust and pollutants on a photovoltaic panel through employing an intelligently designed cleaning assembly, effectively maintains the clean state of the photovoltaic panel, reduces the light loss, improves the power generation efficiency, and improves the power generation efficiency. Meanwhile, the requirements for water and other clean resources are remarkably reduced, the environmental influence and the operation complexity are reduced, an intelligent sensor and a data collector are installed on each photovoltaic panel, the system can collect real-time data about the generating capacity, the environmental condition and the equipment operation state, the high accuracy of the data is ensured, and the real-time performance of the system is improved. Accurate evaluation of the influence of the data processing unit on each photovoltaic panel is supported by the accurate data, and future generating capacity and power distribution network requirements are predicted through a prediction engine, so that the cluster regulation and control system can automatically regulate output according to accurate prediction, and power grid load distribution and energy utilization efficiency are optimized.

The invention discloses a PVDF emulsion demulsification washing process, and relates to the technical field of polymer modified materials. The process aims at effectively removing the residual additive in the polyvinylidene fluoride emulsion so as to improve the purity and the performance of the final product. The process comprises the following steps: firstly, mixing PVDF emulsion with a pre-prepared nano demulsifier, and conveying the mixture to a condensation tower through a screw pump; in the condensation tower, demulsifying the mixed solution at a set temperature, and mechanically stirring by adopting a frame type stirrer to promote the emulsion to be demulsified and form snowflake-shaped particles; and then, the demulsified material is discharged from the bottom of the condensation tower and enters a washing tower, and the residual auxiliary agent is removed by using deionized water in a countercurrent washing manner. And finally, dehydrating and drying the washed material. The method has the advantages that the demulsification and washing processes are optimized, so that the production efficiency is improved, the resource consumption is reduced, and meanwhile, the high purity and excellent performance of the PVDF product are ensured.

The invention discloses a method for determining the nitrogen removal carbon source ratio of landfill leachate based on material balance, and relates to a method for determining the nitrogen removal carbon source ratio of the landfill leachate. The invention aims to solve the technical problems that the cost of supplementing a carbon source is high when the old landfill leachate is denitrified by adopting an MBR (Membrane Biological Reactor) mode at present, and the content of sulfate radicals and hardness can be increased when fresh landfill leachate is added as a carbon source, so that the pressure of subsequent deep treatment is increased. By analyzing the biodegradability of the supplemented carbon source and analyzing the effective carbon source to construct the material balance model, the problem of insufficient carbon sources in landfill leachate treatment is effectively solved, meanwhile, denitrification of the landfill leachate is realized to the greatest extent, the content of total ammonia nitrogen is greatly reduced, the carbon-nitrogen ratio is improved, and subsequent standard treatment is facilitated; and the optimal adding amount of the fresh landfill leachate is determined, so that the method has economical efficiency. The method provided by the invention has a good treatment effect on landfill leachate denitrification, and has a good guiding significance on the on-site landfill leachate treatment process.

The utility model relates to an ultrasonic integrated calcium and magnesium removal-saline water recovery device. The device comprises a calcium removal unit, a magnesium removal unit and a saline water recovery unit which are connected in sequence, wherein each unit comprises a stirring paddle type or ultrasonic mixer and a filter. The wastewater is pumped to a calcium removal unit by a booster pump and reacts with additional sodium carbonate to generate calcium carbonate precipitate, and calcium removal is completed after solid-liquid separation; the filtrate enters a magnesium removal unit and reacts with additional sodium hydroxide to generate magnesium hydroxide precipitate, and magnesium removal is completed after solid-liquid separation; the filtrate enters a saline water recovery unit to react with additional hydrochloric acid, redundant sodium carbonate and sodium hydroxide are consumed and converted into sodium chloride, and the sodium chloride enters a saline water collection tank for standby application after being filtered. The whole set of equipment provided by the utility model has a series of advantages of small occupied area, high automation degree, low equipment investment, low operation and maintenance cost and the like, is simple in process and good in effect when being used for treating wastewater, and can recycle water resources and save the purchase of industrial salt at the same time.

The invention discloses a transformer substation site selection planning method based on II-type fuzzy credibility constraint planning, and the method comprises the steps: firstly employing an interval II-type fuzzy membership function to represent the output of renewable energy sources, and building an uncertainty model of the output of the renewable energy sources; and determining the number of transformer substations according to hardware conditions in the planning area. And then, taking the minimum load moment as an optimization target, and establishing a transformer substation site selection planning model based on II-type fuzzy credibility constraint planning. And finally, solving the substation site selection planning model by using an optimization algorithm, and outputting coordinates of the substation. According to the method, uncertainty brought by photovoltaic energy is processed by introducing II-type fuzziness, fuzzy credibility constraint programming is fused into a mixed integer linear programming framework, planning schemes under different confidence levels can be obtained, system stability and economic benefits can be balanced conveniently, and the method is suitable for large-scale popularization and application. Unnecessary economic cost caused by excessive refinement is avoided to a certain extent, and actual requirements of different power distribution networks are better met.

A canteen dining table storage box relates to the technical field of dining tables and comprises a dining table and a storage box, the side face of the dining table is fixedly connected with a plurality of seats through longitudinal beams, interval sections are arranged among the seats, and the storage box is detachably connected to the longitudinal beams among the interval sections through connecting devices. Preferably, the longitudinal beam is made of iron materials, the connecting device is provided with a clamping groove, and a strip-shaped magnet is clamped in the clamping groove. And the strip-shaped magnet is clamped in the clamping groove in a drawable manner. The dining table is simple and applicable in method, can be used by directly adding the storage box without any improvement on an existing dining table, and can meet the use requirement of temporary storage of diners in a centralized canteen; the utility model has the advantages of simple structure, wide application range, better practical effect and economic benefit.

The utility model discloses a planetary transmission dough kneading machine, which comprises a machine base, a machine body, a stirring power assembly and a dough kneading barrel assembly, the machine body is connected with the rear part of the machine base, the stirring power assembly is arranged at the front part of the machine body, and the dough kneading barrel assembly is placed at the front part of the machine base and is positioned below the stirring power assembly; the stirring power assembly comprises a stirring motor, a gear box body, a worm and worm wheel assembly, a main shaft assembly, a planetary motion assembly and a dough kneading hook, the stirring motor and the gear box body are both fixed on a bottom plate at the front part of the machine body, the worm and worm wheel assembly and the main shaft assembly are both located in the gear box body, and the worm and worm wheel assembly is connected with the stirring motor; the main shaft assembly is connected with the worm and worm wheel assembly, the planetary motion assembly is connected with the main shaft assembly, and the dough kneading hook is connected with the planetary motion assembly. According to the planetary transmission dough kneading machine, the large-capacity dough kneading barrel is fixed, and the planetary motion of the dough kneading hook is equivalent to the compound motion of a double-acting dough kneading machine, so that the transmission structure is simplified, and the dough kneading motion stability is improved.

The invention provides a graphene-loaded metal organic framework composite material as well as a preparation method and application thereof. The graphene-loaded metal organic framework composite material comprises a zirconium-organic framework material and a graphene active component, wherein an organic ligand of the zirconium-organic framework material is ellagic acid. The graphene-loaded metal organic framework composite material disclosed by the invention has an excellent adsorption effect on high-valence metal ions, so that the composite material has application potential in the aspect of adsorbing and removing radionuclides in the field of nuclear industry.

The invention discloses a nickel-calcium-based bifunctional material for a coupling quenching process as well as preparation and application of the nickel-calcium-based bifunctional material. Calcium oxide is used as a carrier, high-temperature calcium oxide is quenched in a mixed aqueous solution containing nickel nitrate, calcium nitrate and citric acid, the prepared nickel-calcium-based bifunctional material has excellent CO2 capture capacity and conversion capacity, a rich pore structure is created for the material through the quenching technology, the strong interaction between metal and the carrier is improved, and the CO2 capture capacity and conversion capacity of the material are improved. The active metal of the material is uniformly dispersed, the material has good CO2 conversion capability and carbon deposition resistance, and efficient integration of CO2 capture and synthesis gas preparation through in-situ methane dry reforming is realized.

The utility model provides a portable one-way valve cow breathing gas collecting mask, which comprises an expansion mask, a telescopic nose clip, a gas conveying pipeline system and a gas collecting bag, the telescopic nose clip is arranged on the expansion mask, a transverse adjusting buckle and a zipper are arranged on the expansion mask, and the gas collecting bag is arranged on the gas conveying pipeline system. The gas collecting bag and the expansion mask are connected to the two ends of the gas conveying pipeline system respectively. Compared with the prior art, the cattle physiological health information acquisition device has the advantages of being convenient and easy to carry, simple to operate, antibacterial and durable, can accurately and quickly acquire the physiological health information of cattle, is beneficial to promoting the quality and benefit of beef production, has systematicness and practicability, and is suitable for popularization and application. Important influence is generated on the technical development of the animal husbandry field in the future.

The application discloses a rice nutrient precision monitoring and fertilization decision system based on multi-source data fusion, and particularly relates to the field of precision agriculture, and is used for solving the problems of nutrient monitoring deviation and inaccurate fertilization caused by spectral saturation during the rice vigorous growth period, and is achieved by the following steps: collecting red edge and near-infrared reflection from multiple angles, synchronously acquiring texture and structure images and fusing to generate an anti-saturation feature cube, outputting a vigorous growth period feature package by spatiotemporal segmentation at the phenological transition point, constructing a separable nitrogen trace spectrum by eliminating saturated response, outputting a prescription front graph by adjusting the balance coefficient under the calculation of energy concentration and water layer confluence indicators in a context constraint graph, and finally outputting an execution prescription graph by combining historical trajectories and micro-terrain to check the landing point, so that the vigorous growth period diagnosis precision is improved, over-fertilization or under-fertilization is avoided, and efficient nutrient management is realized.

The application relates to a water quality change trend rapid prediction method based on multi-source data fusion and physical constraints, and specifically comprises the following steps: step 1: synchronously collecting data such as spectrum information, DO, COD, temperature and pH at key monitoring sites, constructing a water dynamics-water quality coupling equation, and simulating the space-time dynamic distribution of water quality parameters; step 2: outputting a water quality sensitive area through a water dynamics-water quality model, screening sensor layout points by combining information entropy evaluation and spatial clustering, realizing low-cost water quality sensor network deployment through a multi-objective optimization algorithm, and calculating a water body global water quality distribution map by adopting a spatial interpolation method; step 3: analyzing main pollution sources according to the synchronous collection of spectrum information at key monitoring sites, and adopting principal component analysis and an attention mechanism neural network; step 4: based on real-time optical characteristic value-DO data, combining a spatial topological network, a water quality gradient and a cross-region covariance to capture the spatial correlation of water quality parameters between different points, and constructing an optical characteristic value-DO-COD dynamic prediction model; combining pollution tracing and spectrum characteristic correction to correct the COD prediction value, adopting ensemble Kalman filtering to assimilate multi-source data, and improving the model accuracy.

The utility model discloses an alkali metal recycling device which comprises an alkali metal reaction kettle and an alkali metal filter, a discharge port is arranged at the top of the alkali metal reaction kettle, a feed port is arranged at the bottom of the alkali metal filter, and the discharge port is connected with the feed port of the alkali metal filter through a straight pipeline. An extension pipe is arranged at a discharge port of the alkali metal reaction kettle in the kettle, a first switch valve is arranged at a feed port of the alkali metal filter, a filter baffle used for intercepting alkali metal is arranged in the alkali metal filter and comprises a regular hexagonal baffle framework, an elastic filter screen is arranged on the lower surface of the baffle framework, and a second switch valve is arranged on the lower surface of the elastic filter screen. By utilizing the device disclosed by the utility model, the problems of raw material waste, high wastewater treatment cost and high safety risk in the post-treatment process of excessive alkali metal are effectively solved.