26 results about "Sediment pollution" patented technology

The invention relates to an intelligent management and control system for bottom mud elution operation. Comprising the steps that a polluted sediment depth feature semantic construction and evolvable model is adopted; a comprehensive sensor collects multi-dimensional information, and GNN is used for constructing a semantic map of bottom mud pollution factors; understanding the bottom mud as an evolvable pollution body to establish a response model; the bottom mud / pollution response expression model is used for follow-up control prediction; adopting elution path self-adaptive planning; taking the pollution semantic model as input, and identifying an excitation point block sensitive to disturbance of the polluted bottom mud; constructing a path diagram by using a dynamic programming algorithm; updating the response model of the polluted bottom mud, and performing path reconstruction and compression to form a workflow; a working environment perception and pollution migration prediction technology is adopted; a dynamic water body sensing system is deployed, and flow velocity, water temperature and water level changes are collected in real time; constructing a pollution migration and propagation prediction model to visualize the evolution of the pollution thermodynamic diagram along with time as a control system feedforward factor; and a multi-stage cooperative control mechanism of interference and response linkage is adopted.

The invention relates to the technical field of river and lake health evaluation, in particular to a river and lake health evaluation index intelligent calculation system and method based on multi-module collaboration, and the system comprises a river bank stability analysis module which is used for obtaining a bank slope inclination angle, a vegetation coverage degree, a bank slope height, a matrix type and river bank scouring condition data, determining an assignment value corresponding to each piece of data, and analyzing the assignment value of each piece of data; obtaining the comprehensive score of the river-lake bank slope stability; the water quality analysis module is used for acquiring river and lake information including the water quality degree, the lake nutrition state, the sediment pollution condition and the water body self-purification capacity, and obtaining a water quality analysis comprehensive score; and the district river comprehensive analysis module is used for acquiring river information in the district range and obtaining a comprehensive health score of each evaluation river in the district. According to the invention, three core modules of river bank stability, water quality analysis and district river comprehensive analysis are constructed, layered evaluation is carried out for physical habitat, water quality conditions and basin overall health, and key elements of a river and lake ecosystem are comprehensively covered.

This invention provides an in-situ stratified rapid sampling device and method for river and lake sediment pollution, relating to the field of river and lake sediment pollution monitoring technology. The device includes: a main control system, a main sampling system, a mounting frame, a depth sounding module, a working vessel hull, and a crane. The depth sounding module is installed below the stern of the working vessel hull. The main control system and the crane are both mounted on the working vessel hull. The main sampling system is connected to the crane and fixed within the mounting frame. The depth sounding module is used to detect and determine water depth and the thickness of floating mud, flowing mud, and silt. The main control system is used to control the sampling process of the main sampling system and to read the water depth, sediment thickness, and determine whether the main sampling system has completely inserted into the sediment in real time. The main sampling system is used to insert into the sediment to perform stratified sampling of the sediment pore solution. This invention solves the problems of low sampling rate, inability to perform stratified sampling, deviation between stratified sediment samples and actual conditions, low efficiency, and large errors in detection results in existing technologies.

The utility model discloses river and lake sediment pollution dynamic monitoring and sampling equipment, which comprises a moving assembly, a dynamic monitoring assembly, a sampling assembly and a connecting rod, the dynamic monitoring assembly is arranged on the left side of the connecting rod, the moving assembly is arranged on the right side of the connecting rod, the sampling assembly is arranged on the front side of the moving assembly, and the moving assembly is arranged on the right side of the connecting rod. The moving assembly comprises a positioning rod, a first sliding groove, a first threaded rod, a first sliding block and a first motor, the dynamic monitoring assembly comprises a sludge concentration meter body, a transmission antenna and a PLC, and the sampling assembly comprises a containing base, a second motor, a second sliding groove, a second sliding block, a moving rod, a second threaded rod and a blocking plate. The river and lake sediment pollution dynamic monitoring and sampling equipment provided by the utility model has the advantages of convenience in dynamic monitoring and sampling, and solves the problem that a sludge concentration meter in the prior art can only monitor dynamic data of the sludge concentration meter and cannot collect samples of the sludge concentration meter.

This invention discloses a dosing and mixing device for treating sediment pollution based on intelligent control. It includes a supporting base, a supporting frame, a dosing cartridge, and a mixing assembly that operates under intelligent control. A supporting ring located in the center of the supporting base is fixed inside by multiple supporting rods. An anti-sway mechanism is installed inside the supporting ring, and multiple shock-absorbing components are installed within the supporting ring to dampen vibrations and prevent the dosing cartridge from shaking. The anti-sway mechanism includes a supporting block with an annular groove inside. This invention relates to the technical field of dosing and mixing devices. This intelligent control-based dosing and mixing device for treating sediment pollution clamps and fixes the dosing cartridge through the anti-sway mechanism on the supporting base, preventing the cartridge from shaking due to centrifugal force generated during dosing and mixing.

The application discloses a covering layer for in-situ remediation of bottom sediment pollution, which comprises a covering layer laid on the surface of the bottom sediment and formed by composite particles containing treatment components, for blocking and treating the pollutants in the bottom sediment; an aquatic plant layer located on the covering layer, and the plant root system of the aquatic plant layer extends into the bottom sediment through the covering layer; bacteria dispersed in the covering layer for treating the pollution components and promoting the growth of the plants; and benthic animals which are active in the bottom sediment and form an ecological cycle with the plants of the plant layer for promoting the mixing of the treatment components in the composite particles with the bottom sediment. The covering layer provided by the application has a better remediation effect without destroying the ecological environment of the bottom sediment.

The invention provides river and lake bottom mud pollution online monitoring and sensing equipment and method. The equipment comprises a data acquisition and control device, a water quality sensor, a liquid level sensor, a high-frequency eccentric vibration module, a mud-water interface positioning module, an overlying water isolation module and a bottom mud pore solution filtering module, the water quality sensor and the liquid level sensor are integrated with a multi-parameter sensing module and are arranged in the bottom mud pore solution filtering module; the high-frequency eccentric vibration module is located at the top end of the device, and the mud-water interface positioning module is arranged in the bottom end of the high-frequency eccentric vibration module. The data acquisition and control device is connected with the water quality sensor, the liquid level sensor, the high-frequency eccentric vibration module and the mud-water interface positioning module; the mud-water interface positioning module is communicated with the bottom mud pore solution filtering module through an exhaust water guide pipe. The problems of tedious operation process, large workload, long period, high cost and the like of the existing monitoring technology are solved.

Provided are a rapid in-situ stratified collection device and method for sediment pollution in rivers and lakes. The device includes a main control system, a main collection system, a fixing frame, a bathymetric module, a working hull, and a crane. The bathymetric module is installed below the working hull, the main control system and the crane are both installed on the working hull, the main collection system is fixed in the fixing frame and connected to the crane. The bathymetric module is used to detect and determine a water depth, and thicknesses of sediment. The main control system is used to control a collection process of the main collection system, read the water depth and a thickness of the sediment in real time, and determine whether the main collection system is completely inserted into the sediment. The main collection system is used for stratified collection of sediment pore solution.

The application discloses a kind of flexible semi-submersible closed cycle water aquaculture equipment, it is related to aquaculture equipment field, including manual operation platform, waterproof oilcloth, frame and water quality filtration system;The waterproof oilcloth is around frame;The frame and waterproof oilcloth constitute the closed breeding cabin of top opening;The water quality filtration system transports sewage and introduces external water, and processes sewage and external water.The device can realize closed feeding, greatly reduce the risk of external virus and parasitic invasion, can retain original ecological balance and environmental stability, while, the negative influence to external water area is lower, will not cause the eutrophication of surrounding water area, sediment pollution and other hazards.

The invention discloses a riverway bottom mud pollution diagnosis and intelligent restoration system based on AI image recognition, and belongs to the field of riverway governance, the riverway bottom mud pollution diagnosis and intelligent restoration system comprises a base, the top of the base is fixedly connected with a feeding assembly used for restoring riverway bottom mud, a floating assembly is arranged outside the bottom end of the base, and a pollution diagnosis assembly is arranged inside the base; the pollution diagnosis assembly and the telecommunication connection between the pollution diagnosis assembly and the external AI image processing terminal are arranged, so that the traditional lagging mode depending on manual sampling and laboratory analysis is thoroughly changed; underwater images are collected in real time through the camera, image data are uploaded to the AI terminal through the wireless module for intelligent recognition and analysis, the pollution type and the pollution level of bottom mud can be rapidly judged, the diagnosis efficiency is greatly improved, rapid general survey of a large-range river channel is achieved, and the diagnosis accuracy is improved. And an instant and reliable decision basis is provided for subsequent accurate repair.

The application discloses a kind of based on multi-source data fusion's bottom mud pollution analysis dynamic distribution optimization method and system, comprising: constructing pollution diffusion space-time coupling model, generates pollution heat map and uncertainty field;Through the multi-objective optimization of improved NSGA-III algorithm, dynamically adjust sampling point density;Combining reinforcement learning framework generates dynamic sampling sequence, constructs action space, reward function, and through bayesian decision tree real-time updates the optimal scheme of sampling point arrangement;Real-time planning sampling path, according to the feedback of field sampling data update pollution diffusion space-time coupling model and re-plan sampling path.The application realizes the high-precision prediction of pollution space-time distribution, improves the pollution hotspot identification rate, reduces redundant sampling, and adapts to complex environment.

The invention discloses a device and a method for determining sediment pollution biotoxicity by using mollusks, and relates to the technical field of environmental protection. The measuring device comprises a test box, an anti-avoiding plate, an aeration system and a dissolved oxygen measuring system, the distance between the sediment surface layer in the test box and the anti-avoiding plate is adjusted through an adjustable screw, and a gauze and a handle are arranged on the anti-avoiding plate; the aeration system comprises an air pump, an air delivery pipe and air stones; and the dissolved oxygen measuring system comprises a dissolved oxygen probe and a digital display. The device can be used for testing the comprehensive toxicity of sediment pollution, is suitable for sediments with different volumes and mollusks with different individual sizes, can avoid the avoidance behavior of the mollusks on pollutants, can truly reflect the comprehensive toxicity of the sediments according to the measurement result, and is simple in structure, easy to manufacture and process, low in cost, far away from physical disturbance and high in accuracy. And dust and smoke are less.

The invention discloses a phosphorus-locking mud-fixing type bottom mud stabilizer and a preparation method thereof.The preparation method of the stabilizer comprises the step that a polymer is loaded on a phosphorus-fixing agent, and the specific method comprises the steps that the phosphorus-fixing agent and a polymer solution are mixed, stirred, aged, dried and ground, and the phosphorus-locking mud-fixing type bottom mud stabilizer is obtained; according to the stabilizer, through a phosphorus fixing agent-polymer composite system, bottom mud phosphorus pollution control cooperating with bottom mud stability improvement is achieved; the stabilizer can significantly improve the stability of the bottom mud, significantly reduce the concentration of active phosphorus in the bottom mud, significantly reduce the overlying water turbidity of the bottom mud, and significantly reduce the erosion effect of the bottom mud; according to the method, the remediation efficiency of river and lake sediment pollution is greatly improved, and technical support is provided for lake eutrophication treatment.

This invention discloses a method and system for precise source tracing of sediment pollution in pumped storage power station reservoirs. The method includes: acquiring multi-dimensional detection data of sediment and potential pollution source samples from the reservoir area to construct a pollution source fingerprint database; calculating the matching degree using a fingerprint matching algorithm, and calibrating the matching degree using a dual-coupling calibration mechanism based on regional background value subtraction and dynamic correction of pollutant degradation coefficients based on water temperature, dissolved oxygen, and water level fluctuations; employing a multi-parameter dynamic weight correction hybrid linear model, using the calibrated fingerprint matching degree as the core weight, and dynamically quantifying the contribution of each pollution source by combining emission intensity, migration distance, pollutant stability, and water level fluctuation influence coefficients; and classifying dredged materials based on the quantification results. This invention can effectively overcome the impact of periodic water level fluctuations on source tracing, achieve high-precision pollution source tracing, and support precise classification and resource-based disposal decisions for dredged materials.

The invention discloses a method for repairing a low-transparency water area by utilizing dredging bottom mud. Comprising the following steps: step 1, preliminarily evaluating the sediment pollution condition under the habitat, and providing corresponding data support for research and development of an improved substrate in step 2, so as to determine the type and dosage of an added modifier; a plant growth substrate different from common bottom mud is provided through the improved substrate in the step 2, and harm of the eutrophic bottom mud to plants is reduced; the method comprises the following steps: providing a novel matrix by combining with the integrated construction of the improved matrix and the submerged plants in the step 3, and combining ecological transplanting after the improved matrix and the submerged plants are transplanted, so that the survival rate of the transplanted submerged plants is improved, the workload after separation of matrix laying and submerged plant planting is reduced, and the ecological restoration efficiency of the low-transparency water area is improved. The biological diversity of the low-transparency water area ecological system is fully improved, and then the ecological restoration speed is increased.

The present invention belongs to the technical field of pollution source detection. The present invention discloses a pollution source detection method and system for water environment management; comprising: collecting acoustic disturbance data through underwater acoustic sensors, and performing real-time edge preprocessing, synchronously collecting water environment data at different depths, calculating water environment gradient data, and then realizing data synchronization through a unified timestamp. Fourier transform is used to extract the frequency domain characteristics of the acoustic disturbance signal, calculate the main frequency, energy difference and spectrum skewness, and generate disturbance sound wave indicators accordingly. Combining the disturbance sound wave indicators with the water environment gradient data, a sliding window is used to construct a time series sample set, and a recurrent neural network model for predicting future pollution release risks is trained. Differentiated pollution release thresholds are set according to different water body types. When the model output exceeds the threshold, a corresponding level of sediment pollution warning instruction is automatically generated to achieve efficient and graded intelligent identification and response of pollution events.

This utility model discloses a river and lake bottom sediment pollution source collection device, relating to the field of bottom sediment collection technology. It includes a pipe body with a fixed outer plate fixedly fitted at one end. A stirring mechanism is mounted on the fixed outer plate. A mesh cover is mounted at the bottom of the fixed outer plate, and an opening is provided at the top of the mesh cover. An installation sleeve is located at the opening of the mesh cover. The installation sleeve and the fixed outer plate are fixedly connected by bolts. The end of the pipe body away from the fixed outer plate is fixedly connected to the inlet of a sand pump. The outlet of the sand pump is fixedly connected to a housing via a conduit. This river and lake bottom sediment pollution source collection device, by using a mesh cover, forms a protective shield around the pipe opening and the stirring mechanism, preventing large solid objects from clogging the pipe opening and avoiding interference with the normal operation of the stirring mechanism. This improves the service life of the river and lake bottom sediment pollution source collection device.

The invention relates to a river, lake and reservoir muddy water cross-medium pollution assessment and ecological management method which comprises the following steps: establishing a reference system for river, lake and reservoir pollution multi-dimensional assessment, including a background value, a screening value, a control value and a set value; judging the current state of a target body according to the reference system, wherein the target body comprises an overlying water body, a mud-water interface and bottom mud; comprehensively evaluating the multi-dimensional cross-medium pollution of the target body, and judging the pollution type and pollution grade of the overlying water body, the pollution grade of nutritive salt and heavy metal in the bottom mud, and the cross-medium potential release risk and pollution contribution of the bottom mud to the overlying water body; based on multi-dimensional cross-medium pollution comprehensive evaluation, an ecological management measure system is formed, and a corresponding ecological management scheme is provided. The method effectively solves the problem that the engineering cost is high due to the fact that the sediment habitat structure is damaged or the desilting amount is large when lake and reservoir desilting treatment is carried out only from the single perspective of sediment pollution evaluation in the past, and has high application and popularization value.

The invention discloses a landscape water body bottom mud repairing agent as well as a preparation method and application thereof. The specific method comprises the following steps: heating and drying dewatered sludge discharged from a sewage plant, then mixing with pig bone powder, grinding, sieving, compacting, sealing and wrapping with tinfoil, and heating and calcining to obtain a sludge biochar primary body; the obtained sludge biochar primary body is subjected to acid pickling and drying, and a sludge biochar finished product is prepared; the obtained sludge biochar finished product and ferrate are subjected to ball milling and mixing, and the bottom mud repairing agent with the multifunctional conditioning effect is prepared. The prepared remediation agent has adsorbability, oxidability and structure conditioning capacity, and can be used for improving the physicochemical properties of the landscape water body sediment, promoting the degradation of organic pollutants, reducing the anaerobic property of the sediment and the release of greenhouse gases, and realizing the synergistic effect of sediment pollution control and water body ecological remediation.

The application discloses a sampling device for water body sediment pollution detection, which comprises sampling tubes, a device platform, a detection bin, storage tubes, a sample unloading mechanism and a cleaning mechanism. The device platform is provided with lifting openings for lifting the sampling tubes. The detection bin is movably arranged on the device platform and is connected with a sample inlet tube. The storage tubes are arranged in two groups, each group comprises a plurality of storage tubes, and the plurality of storage tubes are sequentially transferred to a storage position. The storage tubes are movably arranged on the device platform. The sample unloading mechanism is used for discharging the excess gas in the sampling tubes during sampling and simultaneously used for transferring the samples in the sampling tubes to the sample inlet tube and the storage tubes. The cleaning mechanism is used for cleaning the interiors of the sampling tubes and the detection bin through the sample unloading mechanism. The application is used to solve the problem of low efficiency caused by the time occupied by the unloading, storage and cleaning of the samples after sampling in the prior art.

This invention provides an indicator and assessment method for the pollution level of seagrass bed sediments. Utilizing CCA and RDA technologies, Kazachstania bacteria are used as an indicator of seagrass bed sediment pollution levels. This is a more detailed and sensitive assessment method. Furthermore, the selection of Kazachstania bacteria as the indicator organism may be related to its sensitivity to specific pollutants, providing a new perspective and method for the monitoring and protection of seagrass bed ecosystems. This invention has broad application prospects, applicable to marine ecological environment monitoring, pollutant emission control, and seagrass bed ecosystem protection, contributing to improving the health and sustainable development of marine ecosystems.

This invention discloses a modular device and its application method for in-situ suppression of sediment disturbance in rivers and lakes, relating to the field of aquatic ecological environment. The device includes a grid structure module and a flexible connection mechanism: the grid structure module consists of primary / secondary keel grid strips connected by interlocking slots, with outer edge sealing strips; the flexible connection mechanism engages with a spherical fixing element via a fixing slot with a hooked arc-shaped elastic body and an internal spring, allowing the module to deflect horizontally by ±5° and move vertically by ±3cm; the bottom of the module is equipped with a retractable support to adapt to different sediment thicknesses; the application method includes surveying and mapping, module calculation, assembly and deployment, and maintenance. This invention suppresses sediment resuspension by physically fixing sediments and mitigating water flow disturbance, offering advantages such as low cost, simple construction, and eco-friendliness, making it suitable for river and lake sediment pollution control and ecological restoration.

The present invention relates to the technical field of solution decision-making, and discloses a method, device and equipment for decision-making of river channel dredging solutions based on sediment elution. The method includes: collecting and performing standardized preprocessing on the river channel spatial distribution, cross-section morphology, hydrological parameters and sediment pollution characteristics of the river network system to obtain a river channel network feature data set; performing analysis on the migration and diffusion of sediment pollutants and calculating the pollution propagation relationship between nodes to obtain a river channel sediment pollution propagation network model; calculating the coupling degree of river channel sediment pollution to obtain river channel sediment elution risk distribution data; inputting the river channel sediment elution risk distribution data into a P-center problem network optimization model, and generating a river network dredging solution through analysis of minimizing pollution diffusion risk and maximizing the utilization efficiency of dredging resources. The present invention incorporates multiple factors of the river network system into the decision-making process, forms a systematic and standardized decision-making method for dredging solutions, and improves the scientificity and efficiency of river channel treatment.

This invention relates to the field of water pollution control technology and provides a method for analyzing the source-sink effect of total phosphorus in lake sediments. The invention calculates the total phosphorus inflow and outflow flux by acquiring hydrological observation data at the inlet and water quality monitoring data at the outlet; it acquires satellite remote sensing data and lake hydrological data to classify the lake sediments into multiple types; it tests the total phosphorus content and the content of multiple phosphorus forms; it conducts sediment phosphorus adsorption and release experiments to evaluate adsorption and release characteristics, tests the phosphorus content in interstitial water of sediments, and calculates the diffusion flux of sediment phosphorus; it establishes a release model of lake sediment phosphorus, compares and verifies it with the total phosphorus inflow and outflow fluxes, and analyzes the source-sink effect, providing strategies and roadmaps for controlling total phosphorus in lakes. This invention enables sampling, monitoring, analysis, and adsorption and release experiments on various types of sediments to explore sediment pollution and release risks and the contribution rate of total phosphorus pollution from various sources, providing a scientific basis for the precise treatment of endogenous total phosphorus pollution in lakes.

This invention discloses a method for controlling tungsten release from sediments using lanthanum-modified red clay, belonging to the field of sediment pollution control and water remediation technology. The invention uses natural red clay as raw material, reacting it with lanthanum chloride hexahydrate at room temperature to prepare lanthanum-modified red clay. This material is then uniformly applied to the surface of tungsten-contaminated sediments. Through the formation of stable lanthanum tungstate precipitates and inner spherical complexes between lanthanum ions and tungstate ions, the adsorption capacity and fixation efficiency for tungsten are significantly improved, effectively inhibiting the release of tungsten from sediments into overlying water. This invention features a simple preparation process, readily available raw materials, low cost, and environmental friendliness. The resulting stable product remains stable under reducing conditions, providing a long-lasting remediation effect. It can achieve a 56.1% fixation rate of dissolved tungsten in interstitial water of sediments, significantly reducing tungsten release flux and the content of unstable tungsten. This method is suitable for in-situ control and ecological remediation of tungsten-contaminated sediments in lakes, rivers, reservoirs, and other water bodies.

This invention provides a comprehensive evaluation method for sediment pollution levels, comprising the following steps: (1) determining monitoring sections and obtaining measured data of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in the sediments; (2) calculating and classifying the heavy metal pollution index based on the measured heavy metal data, and then calculating the comprehensive heavy metal pollution index; (3) evaluating and classifying PAH monomer compounds by combining the PAH sediment quality standard method and the measured PAH data, and then calculating the comprehensive PAH pollution index; (4) calculating the comprehensive sediment pollution index by combining the comprehensive heavy metal pollution index and the comprehensive PAH pollution index, thereby achieving a comprehensive evaluation of sediment pollution levels. The comprehensive evaluation method provided by this invention unifies the heavy metal and PAH indicators, clarifies the weights and standardized values ​​of each pollutant indicator, and ensures the accuracy of the sediment quality evaluation results.