16 results about "Sediment pollution" patented technology

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.

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 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.

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 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.

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.