73 results about "Lake water" patented technology

The application discloses a lake expansion contribution decomposition calculation method, extracts lake area and reverses water quantity change through remote sensing image and digital elevation model, discriminates precipitation phase state by using a temperature threshold method, estimates ice and snow ablation amount by combining a degree-day factor method, and calculates total glacier runoff; a single-layer evaporation model is constructed, net radiation, sensible heat, latent heat and water body heat storage and other fluxes are calculated based on a lake surface energy balance equation, and daily lake surface evaporation is obtained; quantile mapping and Bayesian fusion are combined to correct lake surface precipitation; non-glacier runoff is calculated according to a lake water balance equation; the stable period and the expansion period are divided according to the lake area trend, the stable period hydrological mean value is taken as a benchmark to calculate the expansion period abnormal value, and finally, the expansion contribution of each hydrological factor is determined according to the proportion of the abnormal value in the total water quantity increment. Through the method, the contribution intensity of different driving factors is clear, scientific support is provided for simulating lake change and predicting evolution, and ecological protection and management strategies are more targeted.

The application discloses a method for identifying lake flow evolution characteristics and attribution, comprising the following steps: obtaining a lake flow observation flow rate, a river-lake water level difference and an external driving factor sequence; constructing a river-lake hydraulic response model with a flow direction symbol function, separating an immediate response flow rate component generated by the water level difference instantaneous driving from the lake flow observation flow rate by using the model, and obtaining a lake flow residual sequence representing the change of the lake system itself; and constructing a multi-factor attribution model for the lake flow residual sequence based on the external driving factor, and quantitatively determining the contribution rate of each factor to the lake flow evolution. The application realizes the dynamic separation of the river-lake backwater effect and the evolution trajectory of the response coefficient by constructing a time-varying state space model, solves the problem that the traditional method confuses passive response and active evolution and cannot identify the drift of the river channel physical characteristics, and realizes the quantitative attribution of the lake flow evolution under complex hydraulic conditions.

The present application relates to the technical field of water environment monitoring, and more particularly to a lake water environment monitoring method and system based on sensitive functional unit monitoring, which divides lake functional units with water depth, water dynamic connectivity and functional partitioning as constraints, forms unit-time data sets by fusing multi-source monitoring data, constructs a sensitivity index for identifying sensitive functional units through the coefficient of variation and the pressure index; determines the index weight and establishes a health baseline by using entropy weight-sensitivity coupling at the sensitive unit scale; calculates the health index and its changes by using a multi-time scale sliding window, realizes dynamic diagnosis of sudden deterioration and slow degradation; and identifies high-risk paths and key control units by calculating the health risk transmission intensity in combination with the water dynamic connectivity matrix. The present application realizes the fine characterization of the health status of the lake, the dynamic tracking of the time sequence evolution process, and the identification of the key risk transmission path, and provides reliable technical support for fine management and scheduling decisions of the lake.

The present application relates to the technical field of hydrological remote sensing and water resource information monitoring, and particularly relates to a lake water storage capacity inversion method and device based on a city shallow lake area and a computer device, water surface elevation field construction is performed based on water surface elevation pixel data and remote sensing image data of each time phase, water level change characteristics are extracted according to the constructed water surface elevation field data, lake bottom topography inversion is performed by using multi-time phase water level change characteristics and external lake bottom topography elevation data, the deficiencies of single optical water depth inversion or static topography assumption in the city shallow lake are effectively made up, the physical rationality and spatial continuity of the lake bottom topography inversion are improved, lake water storage capacity calculation is performed, and the accuracy and reliability of the lake water storage capacity calculation are improved.

The application discloses a high-precision and high-efficiency dammed lake flood outburst simulation and risk prediction method and system, breaks through the limitations of traditional methods in the balance of calculation accuracy and calculation cost, establishes a dammed lake flood outburst disaster chain coupling calculation model considering an erodible bed surface, and is used for simulating the whole process of a disaster chain from dammed lake water level rising-dammed body overtopping erosion outburst-flood outburst evolution-downstream engineering; the method is based on shallow water-erosion-riverbed morphology coupling dynamics theory, considers the collapse mechanism in the dammed body outburst process, can be applied to the simulation of the dammed body outburst process under the erosion action and the whole dynamics process of the outburst flood spreading to the downstream engineering and further affecting the engineering buildings, can calculate in advance the flood risk factors such as the time, maximum water level and maximum flow rate of the outburst flood spreading to the downstream engineering and the auxiliary buildings, and can provide decision support for the outburst flood risk warning and defense.

1. The name of the design product: water quality online monitoring cabinet (multi-channel heavy metal ion). 2. The use of the design product: used for collecting, processing and transmitting monitoring data in river and lake water quality monitoring. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The bottom of the design product is not easy to see or not visible during use, omit the top view.

The application relates to the technical field of water quality measurement sampling, and discloses a mobile water quality detection sampling instrument and a use method thereof, which comprises a floating body, a control unit and a sink-and-float frame. The sink-and-float frame is internally provided with a sampling mechanism, at least one group of the sampling mechanism is arranged, and the sampling mechanism is used for extracting a water sample. The gas pump is externally provided with a gas guide ring connected with the sampling mechanism. When the gas guide ring and the sampling mechanism are communicated by starting the gas pump, the gas pump can draw air in the inner tube through the gas guide ring, the inner tube internal air pressure is reduced, the speed of lake water flowing into the inner tube is increased through negative pressure, and the use of the gas valve assembly facilitates the switching of the inner tube movement and the inner tube air extraction work, which is convenient for controlling the inner tube to move to a specified depth and convenient for controlling the inner tube to generate negative pressure, fast water sampling is realized, the overall structure is simple, bidirectional control is realized through the gas pump, the control flexibility of the gas pump is effectively improved, the regulation and control cost is reduced, and the practicability of the sampling instrument is improved.

The application provides a lake dissolved organic matter quantitative tracing method based on molecular fingerprint and application thereof, and relates to the technical field of environmental analysis and water ecological management. The method comprises the following steps: collecting end member samples such as lake water and sediments, surface soil, plant litter, chemical fertilizer, livestock and poultry manure, tail water of a sewage treatment plant, tail water of aquaculture, etc., and enriching DOM through solid phase extraction; then obtaining molecular formula data through mass spectrometry; screening stubborn inert molecules that satisfy H / C < 1.5, conversion times of 0 and exist only in a single end member, and verifying the ecological conservation thereof through -2 < betaNTI < 2 and -0.95 < RCBray < 0.95; adopting SHAP algorithm to optimize a high-contribution molecular feature subset, and inputting the high-contribution molecular feature subset into a MixSIAR model to output the contribution proportion of each end member and the 95% confidence interval. The method guarantees the reliability of the tracer from the mechanism, breaks through the bottleneck of spectral overlap, and realizes accurate and reliable quantitative disassembly of endogenous and exogenous DOM.

The utility model discloses a kind of for lake water level regulation and control device, relate to water level regulation and control technical field.The for lake water level regulation and control device, including frame, regulation and control mechanism and filter device, filter device is set to the front side of frame, filter device includes metal frame, filter screen and collection frame, the front side outer surface of frame is fixedly installed with metal frame, metal frame is opened with installation port in front and back side penetration, filter screen is fixedly installed in installation port, the inside bottom of metal frame is placed with collection frame.The for lake water level regulation and control device, by filter device, when lake water level is adjusted by device, when water flow passes through device, suspended impurities in water flow can be intercepted and collected, improve the environmental protection of device, solve the problem that the function of existing part gate structure is relatively single, suspended impurities in water flow, such as garbage, fallen leaves, directly through gate with water flow, prone to downstream equipment blockage and water pollution and other problems, improve the practicality of device.

This invention discloses a long-term phosphorus removal method for wetlands that couples anti-pollution and rhizosphere activation; belonging to the field of constructed wetland water treatment technology, the method includes the following steps: constructing a vertical flow constructed wetland reactor and filling it with lanthanum-chitosan-modified zeolite packing material; initially introducing slightly polluted river or lake water, using the packing material to release alkaline substances to maintain a pH of 11.0–12.0, and rapidly fixing phosphorus through chemical precipitation; after the effluent pH drops to the normal range, emergent plants are planted, using low phosphorus stress to induce the roots to secrete organic acids, neutralizing residual alkalinity and dissolving insoluble phosphorus on the packing material surface, thus regenerating active sites; simultaneously, utilizing the positively charged microenvironment of chitosan quaternary ammonium salt on the packing material surface and the synergistic antibacterial mechanism of the lanthanum-loaded nanostructure, microbial attachment and extracellular polymer secretion are inhibited, preventing bioclogging. This invention achieves efficient and long-term phosphorus removal from slightly polluted river or lake water through the synergistic effect of high-alkalinity start-up, rhizosphere activation, and anti-biofouling, extending the system's operating cycle.

The present application belongs to the field of river and lake hydrodynamic water environment simulation and water resources regulation, and relates to a water dynamic water quality rapid simulation and emergency regulation method and device integrating artificial intelligence, the method comprising the steps of: constructing a training data set based on historical hydrological sequences; constructing a shallow lake hydrodynamic proxy model based on a physical information neural network; implementing grid scale mass conservation constraints and flow flux correction; performing multi-parameter synchronous rapid prediction of the hydrodynamic field; performing rapid solution of typical water quality element transport and overall model performance evaluation; and implementing differentiated emergency regulation for sudden pollution events during water diversion and non-water diversion periods. The present application takes into account physical reliability and prediction timeliness, realizes a magnitude leap in calculation efficiency, has differentiated emergency regulation capability, can deduce the spatio-temporal evolution characteristics of pollution groups under different working conditions, and provides scientific support and efficient tools for daily management of river and lake water environment and emergency regulation and decision-making for sudden water pollution events.

The present application relates to the technical field of water pollution treatment, and discloses a river and lake water treatment microbial carrier delivery device and a use method, which comprises a delivery ship body, a delivery storage box and a delivery mechanism, and the delivery mechanism is composed of three components, i.e., a quantitative delivery component, a depth delivery component and a regulation and control delivery component. The delivery depth is adjusted through an extension pipe, the multi-pipe differential angle regulation and control is realized through a crankshaft and a regulation and control frame structure, and the closed-loop quantitative delivery is realized through a piston structure and a one-way valve. The present application solves the technical problem that the existing microbial delivery device can only be used for surface spraying, the vertical microbial distribution in the water body is uneven, and the treatment blind area is prone to occur. The present application can dynamically adjust the delivery parameters, realize the full-water-depth and multi-point three-dimensional uniform delivery of the river and lake water body, greatly improve the treatment effect and the utilization rate of the microbial agent, adapt to different river and lake scenes, and is stable and reliable in operation, and is suitable for river and lake sewage treatment and ecological restoration engineering.

This invention relates to a method and system for real-time monitoring of lake water quality based on a sensor array. The method includes: deploying a sensor array in a target lake and setting data acquisition frequency parameters; acquiring the operating parameters of the sensor array in real time, analyzing the operating parameters to determine the sensor health status, and adaptively adjusting the sensors based on the sensor health status; acquiring water quality monitoring data in real time based on the adjusted sensor array, preprocessing the water quality monitoring data and performing quality control verification to construct a qualified monitoring dataset; comparing each water quality indicator in the qualified monitoring dataset with preset environmental standard limits, marking events that exceed the limits and issuing early warnings, thus completing the real-time monitoring of the target lake water quality. This invention realizes intelligent real-time monitoring, anomaly identification, data quality control, and early warning response for lake water quality, providing comprehensive technical support for water environment management.

The application discloses a lake water quality change forecasting and early warning method based on a complex relationship between lake flow and water quality. The method obtains multi-source monitoring data of a lake area, calculates a lake flow comprehensive characteristic index containing flow velocity, vorticity and hydraulic retention time, constructs a conventional early warning path, identifies the optimal time lag of the lake flow and the water quality, adopts a physical constraint kernel regression with transport and retention constraints to construct a response model, and determines a dynamic early warning threshold that changes with the lake flow condition. A mutation early warning path is constructed, a critical slowing down index of the water quality sequence is calculated, a spatial propagation weight is constructed based on the flow direction of the flow field, and an early warning index with enhanced early warning is synthesized by superimposing the upstream signal on the downstream. The early warning levels of the two paths are fused and decided. The application solves the problems of data model violation of physical laws and single-point early warning lag, and realizes early warning of gradual and sudden water quality risks.

This invention discloses a circulating aeration device for lake water pollution treatment, belonging to the technical field of aeration devices. It includes a float, which is a frustum-shaped structure wider at the top and narrower at the bottom. An inner cylinder runs through the float, dividing the interior into an annular cavity. A fixed column is rotatably connected to the inner cylinder. An aeration assembly runs axially through the fixed column. A tilt sensor is fixed to one side of the fixed column. A first and second fixing ring are sleeved and fixed to the outer wall of the fixed column. Two electric rollers are mirror-fixed to the side wall of the first fixing ring. The entire device uses a frustum-shaped float to provide buoyancy. The fixed column and the axially connected aeration assembly achieve continuous aeration and oxygenation of the water. The tilt sensor on the fixed column collects real-time tilt data. The electric rollers on the first fixing ring can roll along the top surface of the float, driving the fixed column and balancing mechanism to rotate 360°.

This utility model relates to a bird control device for herbivorous birds in river and lake ecological restoration areas, comprising a boundary bird-proof cover net and a bird-proof vertical net. The boundary bird-proof cover net is continuously laid along the boundary of the ecological restoration area, with a width of 10-50m. The net surface curves upward from one end near the boundary of the ecological restoration area towards the center of the ecological restoration area, forming an angle of 30±5° with the water surface. The net surface has a diamond-shaped mesh of 3cm-10cm and a light transmittance of ≥85%. The lowest point of the boundary bird-proof cover net is 10-20cm above the water surface. The bird-proof vertical net is set within the area enclosed by the boundary bird-proof cover net, and includes several net bodies with their surfaces perpendicular to the water surface. The upper end of the net body is 0.5-1.5m above the water surface, and the lower end of the net body is 0-30cm above the water surface. The total length of the bird-proof vertical net extending parallel to the water surface is 150-300m / hm. 2 This invention effectively controls the grazing of herbivorous birds while maintaining the water's light transmittance and ecological connectivity. It does not actively harm birds, is more in line with environmental protection and animal welfare principles, does not affect the growth of aquatic plants in shallow water areas, and meets the needs of long-term management.

The utility model relates to water level monitoring technical field, proposes a kind of river and lake water level monitoring device, including measuring plate, still including measuring frame, connecting plate, auxiliary mechanism, connecting piece, transmission rod, transmission roller, protective box, fixed bracket, cleaning roller, first bevel gear and second bevel gear, measuring frame is slidably connected in measuring plate side, four groups of connecting plate are installed in measuring frame outer side, and connecting plate side is provided with auxiliary mechanism, connecting piece is installed in four groups of connecting plate inner side, and connecting piece inside rotationally connected has transmission rod, transmission rod outer surface is installed with transmission roller, connecting piece outer side is installed with protective box, and transmission rod outer surface is penetrated in protective box, and fixed bracket is installed in protective box side. By the above technical scheme, to solve the problem that operator is difficult to clean measuring plate after adhering dirt in the prior art, leads to long time use and is prone to difficult reading condition.

This invention relates to the field of water resource treatment equipment technology, specifically a filtration device for recycling river and lake water resources in arid areas. The storage tank has symmetrically arranged annular grooves on its upper inner wall, with sliders slidably connected within each groove. A filter tube is fixedly connected to the sliders on the side away from the annular groove. A hollow groove is formed on the upper side wall of the filter tube, and a coarse filter plate, a medium filter plate, and a fine filter plate are sequentially fixedly connected to its upper inner wall. The beneficial effects of this invention are the adoption of a four-stage filtration structure (coarse, medium, and fine filtration + grooved filter plates), combined with a rotating filter tube design, which efficiently separates sediment and suspended impurities of different particle sizes, balancing filtration accuracy and treatment efficiency, and solving the problem of poor filtration effect with a single filter plate. The feed pipe has a built-in water volume sensor, which, together with an adjustable arc-shaped baffle and an electric telescopic rod drive mechanism, can dynamically adapt to the water volume in the storage tank to adjust the water inlet rate, avoiding overflow waste or insufficient water supply, and improving water resource utilization.

The utility model relates to a kind of for water environment real-time monitoring buoy, including the bucket body with top being open, water storage bucket and water pump;According to water depth, water flow condition and target monitoring horizon, inject appropriate water into water storage bucket, adjust bucket body draught depth, make bucket body open slightly lower than water surface, ensure lake water continuously flow into bucket body, lake water enters the inside of bucket body by open, form relatively stable water body environment.Three water storage buckets are provided with circumferential supporting force by support, effectively resist the tilting moment caused by wind wave or water flow, prevent bucket body overturning or water inlet position deviation, guarantee sampling stability.Water inlet section of water pump is fixed in barrel bottom in bucket body, continuously extract water sample in bucket body.Further water sample is detected, wherein the heat generated when water pump motor operates is directly transferred to the flowing water body in bucket body.

To provide an underwater resource recovery device that does not have any impact on the surrounding environment. [Solution] A water resource recovery device is provided that collects or extracts biological resources, plant resources, organic resources, or inorganic resources from the sea, lakes, or rivers into the bottom sealed member through the resource recovery opening 2b of the bottom sealed member, or collects or extracts biological resources, plant resources, organic resources, or inorganic resources near the seabed, lakebed, or riverbed into the bottom sealed member, captures the collected or extracted resources into the resource recovery pipe member 1 through the resource recovery opening 2b of the bottom sealed member, and only draws up seawater, lake water, or river water from the resource recovery pipe member 1, and since the collection or extraction takes place within the bottom sealed member 2 sealed by the resource recovery pipe member 1, it does not affect the surrounding environment in any way.

The present application relates to a kind of multi-level water ecological system with river-lake connectivity and its construction method, it relates to the technical field of ecological system, the ecological system is built on the river connected with lake, including multiple staggered equidistant distribution in river both sides and for water storage, water purification and improve surrounding ecology Ecological buffer zone, ecological buffer zone is connected with river;Ecological buffer zone includes the water storage pool of cylindrical type and the floating body platform located at the center of water storage pool, the side of water storage pool is respectively equipped with water inlet channel body and water outlet channel body connected with river, the water outlet of water inlet channel body is equipped with the drive mechanism based on water flow kinetic energy drives floating body platform rotation.This system constructs artificial ecological buffer zone, constructs multi-level plant community, constructs the ecological system that plant and animal are coordinated, and then overall constructs river-lake water system ecological system with nature as main, artificial moderate intervention, greatly improves the self-purification capacity of system water body.

The present application relates to a kind of river and lake ship optical remote sensing identification method for different water color type, comprising: obtaining the remote sensing surface reflectivity data of river and lake water area;To the remote sensing surface reflectivity data: extract brightness component TCB by the mink coat transformation;Calculate the reflectivity ratio NIR / SWIR of near-infrared band and mid-infrared band;The sliding window is set to river and lake water area near-infrared band image, and the standard deviation of the center pixel of each sliding window is calculated;After Z-Score standardization processing is carried out to the TCB, NIR / SWIR, standard deviation of each pixel, the sum is calculated as pixel ship index;In deep color, shallow color water body area in river and lake water area, pixel ship index is used to extract ship pixel in combination with threshold segmentation method respectively;The ship pixel of deep color, shallow color water body area is fused, and the ship pixel of river and lake water area is obtained.The present application method can be suitable for inland river and lake ship remote sensing identification under different water color and optical environment conditions.

The present application relates to the technical field of water environment monitoring, and more particularly to a lake water environment monitoring method and system based on sensitive functional unit monitoring, which divides lake functional units with water depth, hydrodynamic connectivity and functional partitioning as constraints, forms unit-time data sets by fusing multi-source monitoring data, constructs a sensitivity index for identifying sensitive functional units through the coefficient of variation and the pressure index; determines the index weight and establishes a health baseline by using entropy weight-sensitivity coupling at the sensitive unit scale; calculates the health index and its changes by using a multi-time scale sliding window, realizes dynamic diagnosis of sudden deterioration and slow degradation; and identifies high-risk paths and key control units by calculating the health risk transmission intensity in combination with the hydrodynamic connectivity matrix. The present application realizes the fine characterization of the health status of the lake, the dynamic tracking of the time sequence evolution process, and the identification of the key risk transmission path, and provides reliable technical support for fine management and scheduling decisions of the lake.

The application discloses a kind of big data-based water conservancy project intelligent analysis system and method.This application belongs to the technical field of intelligent monitoring and early warning of water pollution prevention and control.The system includes: environmental analysis module, for obtaining the first influence data of environmental data on lake;Weather analysis module, for obtaining the second influence data of weather data on lake;Runoff analysis module, for obtaining the third influence data of runoff water replenishment data on lake;Model construction module, for constructing virtual lake model;Change analysis module, for generating lake change data from each influence data, to obtain model change data;Instruction generation module, for generating initial lake regulation instruction, and correcting to obtain lake regulation instruction, according to lake regulation instruction to carry out water resources regulation.This technical solution can improve the intelligent level of lake water resources management, while avoiding artificial decision bias, improving the accuracy of water level and water quality management.

The present application belongs to the field of lake water environment treatment, and specifically provides a method, system, electronic device and storage medium for quickly estimating the lake water purification treatment scale, comprising: constructing a quick estimation formula system: constructing calculation formulas of a comprehensive degradation coefficient, sewage inflow into a lake, and a non-uniformity coefficient; constructing a two-dimensional hydrodynamic water quality benchmark model for calculating outlet section water quality; solving a fitting equation of the non-uniformity coefficient; and estimating the sewage inflow into the target lake that can be purified and treated. Through the mixed correction mechanism of the two-dimensional hydrodynamic water quality model and the zero-dimensional water environment capacity formula, the non-uniformity coefficient in the zero-dimensional model is accurately calibrated, and the reliable estimation of the quick estimation of the lake water purification treatment scale is realized.

A water body algae toxin concentration estimation method and system based on remote sensing image belong to the technical field of inland water body eutrophication lake water environment evaluation, solve the technical problems that the existing technology has high precision requirement of detection instrument, expensive equipment material, complex and low efficiency of water sample pretreatment process, and the remote sensing indirect inversion method has poor accuracy and is difficult to realize accurate quantification of microcystin. Step 1, obtain the remote sensing image of the water body, and pretreat to obtain the remote sensing reflectivity data; step 2, calculate the spectral index based on the remote sensing reflectivity data; step 3, construct a water body microcystin concentration remote sensing estimation model, take the spectral index as the input of the water body microcystin concentration remote sensing estimation model, and obtain the water body microcystin concentration. The present application is used for realizing efficient and accurate water body algae toxin concentration estimation.

The application relates to the technical field of water treatment, in particular to a filter device for increasing the transparency of river and lake water, which comprises a base, a water inlet assembly, a layered filtering system, a dynamic cleaning mechanism and a photocatalysis module. River and lake water is introduced into the layered filtering system through a water flow guide mechanism, suspended particles are separated step by step by using a coarse filter screen, a fine filter screen and an adsorption layer, the dynamic cleaning mechanism cleans the filtering unit in real time to prevent blockage, and the photocatalysis module decomposes tiny particles and algae. The application can effectively improve the transparency of water bodies, adapt to complex water quality conditions, ensure long-term stable operation and significantly improve the water environment quality of rivers and lakes.

This utility model discloses a dosing aerator suitable for lake pollution control, including a support frame. The support frame is connected to a dosing aeration component, which includes a mixing component mounted on the support frame for mixing lake water with a chemical solution. The mixing component includes a first water pump and a tank fixedly connected to the support frame. A water pumping pipe is fixedly connected to the water pump's suction end, and a conduit is fixedly connected to the first water pump's discharge end and the tank. This utility model relates to the field of lake pollution control technology. This dosing aerator for lake pollution control, with a second water pump, an injection pipe, and a first three-way valve working together, injects clean water into the corresponding housing as needed. The two housings, a second motor, a second gear assembly, a rotating drum, a second stirring frame, and a dosing device work together to mix the chemical powder and clean water. The second three-way valve, two sets of branch pipes, and a solenoid valve work together to add the prepared chemical solution into the tank as needed.