7results about How to "Achieve pollution" patented technology

The application discloses a surface water abnormal sampling triggering method and system based on multi-source information fusion, and relates to the technical field of data processing.The method comprises the following steps: collecting surface water online monitoring, environmental working conditions, historical water quality and external early warning data, and constructing a multi-source associated data set; obtaining a standard data set after preprocessing; identifying data association abnormalities to generate a first abnormality mark, and combining with space-time comparison to identify implicit abnormalities to generate a second abnormality mark; constructing a digital twin model of a river basin water environment, and generating a third abnormality mark through residual analysis of real-time monitoring data and a dynamic water quality baseline; using a graph neural network to aggregate and analyze the three kinds of marks, identifying abnormal propagation paths and tracing directions, and outputting tracing results and comprehensive abnormal confidence; and generating a targeted sampling instruction to automatically trigger associated point abnormal sampling.The application fuses multi-source data and digital twinning, accurately identifies water quality abnormalities and targets tracing sampling, and improves monitoring efficiency.

This utility model discloses a comprehensive treatment system for zinc-containing waste generated in viscose fiber production, belonging to the field of waste treatment in viscose fiber production. The system includes a reaction tank, filter press, pretreatment device, filter, ion exchange resin column, and acid bath preparation tank, ensuring a comprehensive treatment pathway for zinc-containing waste. This facilitates the mixing of highly acidic, high-salt zinc-containing wastewater with zinc-containing sludge. The strong acidity of the wastewater allows for the acid leaching of zinc sulfide and zinc hydroxide in the sludge, simultaneously obtaining a zinc sulfate solution and recovering sulfate to prepare sodium sulfate and sulfuric acid. This reduces the salinity of the wastewater, thereby decreasing the amount of reagents used in treating zinc-containing wastewater, mitigating scaling risks, and reducing the load on subsequent biochemical systems.

This invention discloses a cleaning method, cleaning system, and application for precision filters. The cleaning method includes the following steps: coarsely washing the emptied precision filter with an organic solvent; washing the coarsely washed precision filter with water to remove the organic solvent; after washing, draining the wash water from the precision filter to fill it with water, then heating to perform deep hydrolysis treatment on the gel impurities adhering to the precision filter; after the deep hydrolysis treatment is completed, draining the decomposition liquid from the precision filter; washing with water, and drying to complete the cleaning of the precision filter. This invention's cleaning method uses water for deep decomposition treatment to replace the existing alkaline washing process, achieving efficient decomposition of GPAN, with good cleaning effect, low solid waste generation, and low corrosivity. This invention further improves the water-based deep decomposition treatment process, proposing a reflux self-circulation deep decomposition treatment process and a forced circulation deep decomposition treatment process to further improve the cleaning effect.

The invention relates to the technical field of educational information processing, in particular to a question bank knowledge point screening method and system based on text analysis. The method comprises the following steps: extracting a plurality of candidate nodes corresponding to old nodes mounted on test questions to be processed in a new outline map, and obtaining test question text vectors of the test questions; generating a unique feature vector according to the unique vocabulary, different from other candidate nodes, of each candidate node; determining text similarity according to the test question text vector and each unique feature vector; determining a topological matching degree according to a matching relationship between a historical associated node set constructed based on historical test paper records and a topological neighborhood set of each candidate node; generating a mutual exclusion identifier according to whether each candidate node belongs to a historical associated node set; the text similarity, the topological matching degree and the mutual exclusion identification are fused, and a comprehensive cost value is determined; and comparing the minimum comprehensive cost value with a preset cost threshold value, and determining to execute node updating or isolation operation on the test questions according to a comparison result, so that accurate screening of the stock test questions is realized.

The application relates to the technical field of energy storage, and discloses a thermal-chemical storage coupling oxygen-enriched combustion utilization system and method for waste heat of a thermal power plant, wherein a heat energy output end of high-temperature flue gas or steam bypass of the thermal power plant is connected to a heat energy input end of a thermal-chemical energy storage and release reaction unit, necessary heat energy is provided for an energy storage reactor, heat carried by flue gas of the thermal power plant and heat carried by steam which is easily wasted during low-load operation are fully utilized, the utilization efficiency of heat energy of the thermal power plant is improved, energy waste is reduced or avoided, the thermal-chemical energy storage and release reaction unit and an energy storage reaction material storage container are sequentially and circularly connected to form a loop, a thermal-chemical reaction product can be simply regenerated through an oxidation reaction, heat is released and recycled, and the waste heat of the thermal power plant is effectively stored and utilized, energy consumption is reduced, and energy is saved.

This invention discloses a spray gun and a cold spraying device incorporating the spray gun. The spray gun includes a spray gun body, a nozzle, a powder channel, a filter assembly, an air purifier, and a cooling structure. The nozzle is connected to one end of the spray gun body. The powder channel is disposed within the spray gun body, with one end connected to the nozzle and the other end having a powder inlet. The filter assembly is installed at the powder inlet. The air purifier is located at one end of the spray gun body and is sealed and connected to the powder channel. The cooling structure is integrated inside the spray gun body and fits snugly against the powder channel. The spray gun and cold spraying device of this invention effectively remove impurities from powder and air through the dual purification effects of the spray gun filter assembly and the air purifier. Simultaneously, the circulating cooling function of the cooling structure precisely controls the operating temperature of the spray gun, significantly extending the service life of the spray gun and equipment and ensuring long-term stable operation of the equipment.

The invention discloses an AGV path planning method in a complex industrial environment, relates to the technical field of industrial automation, and solves the problem that the overall navigation function is paralyzed when a single sensor fails due to the lack of an effective modal cooperation and degradation processing mechanism in the prior art. According to the method, cross-modal gradient conflicts are isolated through layered feature extraction, fusion weights are dynamically generated through the signal-to-noise ratio and the historical contribution degree, and interference modes are inhibited in real time; calculating a dynamic clipping threshold value based on the gradient fluctuation, the historical benchmark and the cross-modal reference value, and replacing a fixed threshold value to retain an effective updating direction; an Actor-Critic decision network and a secure rollback mechanism are coupled, and a conservative strategy is quickly switched when a single mode fails or a gradient conflict occurs. According to the scheme, the environmental adaptability and decision reliability in a strong-interference and multi-obstacle scene are remarkably enhanced, and technical support is provided for high-robustness autonomous navigation of industrial intelligent equipment.