Abstract: A pollution emission determination method and apparatus based on a digital watershed space-time model is provided. In the method, a to-be-detected river watershed includes a plurality of sections, each section is provided with a monitoring station, a water quality sensor is mounted on each monitoring station, and the water quality sensor is used for acquiring water quality data. The method includes: acquiring currently monitored water quality data of a current monitoring station; acquiring actual water quality data of a previous monitoring station, calculating the actual water quality data through a calculated one-dimensional steady-state river model, and acquiring theoretical water quality data of the current monitoring station; and determining whether pollution emission occurs between the current monitoring station and the previous monitoring station according to a comparison result of the currently monitored water quality data and the theoretical water quality data.

Abstract: An enterprise screening method and apparatus, an electronic device and a storage medium are provided. The method includes: acquiring original enterprise data belonging to a preset industry category, and extracting enterprise business behavior information corresponding to each enterprise from a business scope of each enterprise in the original enterprise data; extracting first target business behavior information from the business scope of the confirmed target enterprise data belonging to the preset industry category, the enterprise business behavior information and the first target business behavior information both including business mode information and business object information; and matching the enterprise business behavior information corresponding to each enterprise with the first target business behavior information respectively, and when the matching is successful, determining that the enterprise is a first target enterprise. An accuracy of enterprise screening can be improved.

Abstract: An enterprise activation degree determining method and apparatus, an electronic device and a storage medium are provided. The method includes: acquiring original activation degree index data in P dimensions corresponding to N enterprises respectively, and performing dimensionless processing on the original activation degree index data to obtain target activation degree index data in P dimensions; calculating a correlation coefficient of target activation degree index data in every two dimensions to obtain a correlation coefficient matrix, and determining feature values and feature vectors of the correlation coefficient matrix; determining M principal components and accumulated contribution rates respectively corresponding to the M principal components based on the feature values and the feature vectors; calculating weights respectively corresponding to the target activation degree index data in the P dimensions; and determining the activation degree of each enterprise.

Abstract: A water-pollution environmental-protection verification method based on power grid and tax data fusion includes: acquiring power data and tax data corresponding to a plurality of enterprise identities in a target region; acquiring a pollutant output and a sewage purification consumable consumption corresponding to each enterprise identity based on the tax data; determining a first candidate enterprise identity set based on the pollutant output; determining a second candidate enterprise identity set based on the sewage purification consumable consumption and a sewage purification consumable consumption of an actual unit yield of each enterprise identity; acquiring production information of the plurality of enterprise identities based on the power data, and determining a third candidate enterprise identity set; and processing based on the first candidate enterprise identity set, the second candidate enterprise identity set and the third candidate enterprise identity set to determine a target enterprise identity

Abstract: A method and apparatus for screening enterprises in Yangtze River Basin, an electronic device and a storage medium are provided. The method includes: acquiring original enterprise data belonging to a preset industry category, and comparing the original enterprise data with screened local enterprise data to obtain common enterprise data of the original enterprise data and the local enterprise data; extracting a first text feature from a business scope of the common enterprise data, and extracting a second text feature from a business scope of each enterprise in the original enterprise data; and performing feature matching on the second text feature corresponding to each enterprise and the first text feature respectively, and when a matching result meets a preset condition, determining that the enterprise is a first target enterprise. An accuracy of enterprise screening can be improved.

Abstract: The present disclosure relates to water environment governance technology, and particularly discloses an urban river/lake water environment multi-interface governance and restoration method. The method is a multi-interface coordinated governance and restoration method based on “control for bottom, regulation for middle and governance for top”, including: “control for bottom”—controlling the emission of sediment nutritive salts and the dormancy and recovery of algae; “regulation for middle”—regulating primary productivity in a water body to inhibit the recovery of the algae; and “governance for top”—reducing nitrogen and phosphorus nutrients of an air-water interface to control the reproduction and growth of the algae. In the present disclosure, the water body governance and restoration technology based on interface coordination can effectively inhibit the outbreak of cyanobacteria and avoid extreme conditions in the ecosystem.

Abstract: The present application relates to the technical field of water environment governance, and particularly discloses a method for accurate positioning and in-situ treatment of pollutants at a sediment-water interface. In the method, high-throughput sequencing technology and pollutant source apportionment technology are firstly used to perform accurate positioning on the sediment to be controlled, and then electrodialysis-vacuum negative pressure dewatering technology is used to perform in-situ dewatering treatment on the sediment to be controlled, thereby realizing accurate governance with the minimum desilting amount. In the present application, in further cooperation with the application of microbial reagents, the microbial flora environment of the sediment-water interface is regulated, thereby increasing the dewatering speed of the sediment.

Abstract: The present disclosure relates to water environment governance technology, and particularly discloses an urban river/lake water environment multi-interface governance and restoration method. The method is a multi-interface coordinated governance and restoration method based on “control for bottom, regulation for middle and governance for top”, including: “control for bottom”—controlling the emission of sediment nutritive salts and the dormancy and recovery of algae; “regulation for middle”—regulating primary productivity in a water body to inhibit the recovery of the algae; and “governance for top”—reducing nitrogen and phosphorus nutrients of an air-water interface to control the reproduction and growth of the algae. In the present disclosure, the water body governance and restoration technology based on interface coordination can effectively inhibit the outbreak of cyanobacteria and avoid extreme conditions in the ecosystem.

Abstract: The present disclosure relates to a water environment governance technology, and particularly discloses a method for regulating primary productivity in a eutrophic water body. Emerging plants are cultivated in a water area to be governed to improve anti-wind wave and anti-water flow capabilities of the water area to be governed and establish a relatively stable microenvironment; and a modified clay molecular sieve, phosphorus-accumulating bacteria, grass seeds of submerged plants and silty clay are used to prepare a modified clay molecular sieve ecological base, and the modified clay molecular sieve ecological base is uniformly added to the water body of the area to be governed to inhibit the emission of phosphorus in the deposit and reduce disturbance, so that the cyanobacteria in the deposit is fixed, thereby improving the oxygen-deficient microenvironment of a sediment-water interface and achieving the objective of inhibiting growth of cyanobacteria.

Abstract: The present application relates to the technical field of water environment governance, and particularly discloses a method for accurate positioning and in-situ treatment of pollutants at a sediment-water interface. In the method, high-throughput sequencing technology and pollutant source apportionment technology are firstly used to perform accurate positioning on the sediment to be controlled, and then electrodialysis-vacuum negative pressure dewatering technology is used to perform in-situ dewatering treatment on the sediment to be controlled, thereby realizing accurate governance with the minimum desilting amount. In the present application, in further cooperation with the application of microbial reagents, the microbial flora environment of the sediment-water interface is regulated, thereby increasing the dewatering speed of the sediment.

Abstract: The disclosure relates to the technical field of aquaculture, and more particularly to a fish breeding device provided with a magnetizer and a method for accelerating normal propagation and growth speeds of fishes. The fish breeding device includes a box body, a controllable partition plate, an extraction pump, and the magnetizer; the controllable partition plate is arranged in the box body and used for dividing the inner space of the box body into a feeding area and a non-feeding area; the extraction pump is arranged on the controllable partition plate and used for exchanging the water body in the feeding area with the water body in the non-feeding area; the magnetizer is arranged on the outer wall of the box body corresponding to the feeding area, and used for magnetizing the water body of the feeding area. In the disclosure, fish eggs are further hatched by the magnetized water.

Abstract: The present invention relates to the field of water environment treatment, and particularly discloses a system and method for restoring a river and lake water body by a floating type water purification plant.

Abstract: Embodiments of the present disclosure relate to a water body pollution intelligent investigation method and device based on unmanned ships. The method includes: determining a first pollutant concentration value of a monitored water area according to water quality data of the monitored water area; controlling an unmanned ship to cruise in the monitored water area according to a preset cruise trajectory and perform water quality collection to obtain a second pollutant concentration value of the monitored water area; determining, when there is an abnormal cruise coordinate point, a target cruise trajectory according to the second pollutant concentration value of the abnormal cruise coordinate point; and controlling the unmanned ship to cruise according to the target cruise trajectory to determine a pollution source of the monitored water area.

Abstract: Embodiments of the present application relate to methods, devices, apparatuses, and storage media for monitoring and analyzing air pollution. The methods includes acquiring air quality data of a monitored area, where the air quality data includes ground air quality data corresponding to the monitored area and N-component data collected by an air sensor in the monitored area; inputting the air quality data into a pollution analysis model, where the pollution analysis model is previously trained according to the ground air quality data and the N-component data; and determining whether the air quality data of the monitored area is abnormal according to an output result of the pollution analysis model. The methods may solve the technical problem of inaccurate monitoring results caused by the susceptibility of air quality monitoring in related technologies to human intervention.

Abstract: Embodiments of the present disclosure relate to a water area pollution intelligent monitoring and analysis method and system. The method includes: acquiring, by a receiving module of a water area pollution monitoring and analysis device, water quality data of a monitored water area; inputting, by a processing module in the water area pollution monitoring and analysis device, the water quality data into a water quality feature extraction model in the processing module to obtain water quality features of the monitored water area, where the water quality feature extraction model is previously trained; determining, by an encoding module in the water area pollution monitoring and analysis device, a state diagram of the monitored water area according to the water quality features; and sending, by a routing module in the water area pollution monitoring and analysis device, the state diagram to a preset server.

Abstract: The present invention relates to the field of water environment treatment, and particularly discloses a method for carrying out whole-process treatment on phytoplankton.

Abstract: The present invention relates to the field of water environment treatment, and particularly discloses a method for restoring an ecological environment by utilizing emergent aquatic plants.

Abstract: The disclosure relates to the field of water environment treatment, and more particularly to a system and a method for restoring a water environment by a constructed wetland.

Abstract: The present application provides a device for treating a black and odorous water body comprising a pre-treatment unit, a biomimetic intestine tubular purification system which imitates a digestion of small intestine, a microbial fuel cell which imitates a digestion of large intestine, and an inclined tube sedimentation tank which imitates human excretion.

Abstract: The present application provides a method for treating a black and odorous water body comprising the following steps: pre-treating the black and odorous water body; passing the pre-treated water body through a biomimetic intestine tubular purification system which imitates a digestion of small intestine; passing the tubular purification system-treated water body into a microbial fuel cell which imitates a digestion of large intestine to treat the water body; and pumping the microbial fuel cell-treated water body into an upward flow inclined tube sedimentation tank to treat the water body.