8 results about "Ground water quality" patented technology

The invention discloses an underground water multi-pollutant rapid prediction and diagnosis system, which comprises a multi-parameter sensing and data acquisition module used for acquiring underground water quality parameters in real time; the edge pretreatment unit is used for carrying out edge pretreatment on the underground water quality parameters; the off-line synthetic data engine is used for generating synthetic training data of transient extreme working conditions; the feature engineering processing unit is used for constructing interaction features based on a geochemical mechanism; the AutoML reasoning unit is used for deducing and outputting a pollutant concentration predicted value through a model; and the physical-data dual-drive fault diagnosis module is used for diagnosing the authenticity of pollution according to three-dimensional calculation results of the physical residual calculated by the physical residual calculation unit, the mean square error of the sensor data calculated by the data reconstruction error unit and the difference between the observed value and the predicted value calculated by the statistical test unit. And judging whether to give an alarm according to the diagnosis result. According to the scheme, the specific pollutants can be accurately identified, and the authenticity of pollution can be accurately identified.

This invention relates to the field of pollution monitoring technology, specifically to a multivariate dynamic monitoring platform for groundwater in mining areas. This platform includes a data acquisition module for acquiring sample environmental hydrological disturbance data sequences and sample hydrological and water quality data sequences; an evaluation value acquisition module for acquiring complex and sensitive evaluation values ​​of environmental hydrological disturbance responses corresponding to each hydrological and water quality type; and a gain compensation and decision tree model construction module for compensating the traditional information gain of the corresponding hydrological and water quality type based on the complex and sensitive evaluation values ​​of environmental hydrological disturbance responses, obtaining a target information gain, and using the target information gain as a node splitting criterion to conduct supervised learning training on the sample hydrological and water quality data combination to generate a binary classification decision tree model for groundwater pollution identification and monitoring in mining areas. Furthermore, this invention can improve the accuracy of the decision tree model for pollution identification and monitoring.

This utility model discloses a depth-adjustable groundwater sampling device for groundwater quality testing, belonging to the field of groundwater testing technology. It includes a U-shaped frame with a sleeve assembly on the inner side. A motor assembly is installed at the upper part of the U-shaped frame, above the sleeve assembly. This utility model incorporates a movable thawing device, allowing workers to move the device as needed using wheels, thus reducing the difficulty of moving the device and lessening the workload. Furthermore, when ground conditions permit, workers can fix the device in place using an electric lifting rod and a cone-shaped structure, reducing the possibility of the device deviating from its original position due to external collisions. Additionally, workers can use a fan and an electric heating rod to thaw the surface layer of frozen groundwater in winter, thereby improving the device's working capacity.

The utility model relates to the technical field of environmental monitoring, and discloses an underground water quality rapid sampling device which comprises a bottom plate, the top of the bottom plate is fixedly connected with two first fixing plates, the tops of the two first fixing plates are both fixedly connected with fixing discs, the front side of one fixing disc is fixedly connected with a protective shell, and the front side of the other fixing disc is fixedly connected with a second fixing plate. A rotating rod is rotatably connected to the rear side of the protective shell, a ratchet wheel is fixedly connected to the front side of the rotating rod, a fixed rod is fixedly connected to the inner wall of the rotating rod, a clockwork spring is arranged outside the fixed rod, a first moving rod is slidably connected to the top of the protective shell, and a moving block is fixedly connected to the bottom of the first moving rod. And the left side of the moving block is rotationally connected with a pawl. According to the utility model, the movable rod moves, so that the movable block moves, the pawl is separated from the control on the ratchet wheel, the clockwork spring on the fixed rod applies force, and the fixed rod rotates the rotating column, so that the sampling device is quickly recovered.

This invention relates to the field of groundwater detection technology and discloses an ecological environment groundwater monitoring and sampling device. The device includes a sampling assembly and a sample storage bottle mounted at the top of a fixed monitoring well, and a vertically positioned piston tube. The sampling assembly comprises multiple sampling tubes detachably connected end-to-end, with the top of each tube extending into the sample storage bottle. A sampling head is detachably connected to the lower end of each sampling tube. The diameter of the piston tube is larger than the diameter of the sampling tubes, and a sampling hole is provided at the bottom of the sampling head. This invention has the following advantages and effects: by combining multiple sampling tubes and piston tubes with the piston assembly, water samples can be continuously extracted from any depth. Utilizing the principle of repeated negative pressure, multiple samplings can be performed at a single point within a fixed monitoring well, enabling high-frequency groundwater sampling and facilitating timely monitoring of groundwater quality changes.

This invention relates to the field of data processing technology, specifically to a method and system for online monitoring and early warning of groundwater pollution. The method includes: real-time acquisition of groundwater quality parameters and hydrogeological parameters from upstream background wells and perimeter monitoring wells to form monitoring data for these wells, and preprocessing the monitoring data; extracting background feature parameters from the upstream background wells based on the preprocessed monitoring data and establishing a corresponding baseline reference system; and, based on the baseline reference system, introducing a leachate water quality index concentration vector and a covariance transfer matrix to analyze the deviation of the monitoring data from the perimeter monitoring wells. This invention, by introducing a leachate water quality index concentration vector and a covariance transfer matrix, achieves deep decoupling and statistical analysis of multi-source heterogeneous monitoring data, such as water quality and groundwater hydrogeological parameters acquired by online sensors, during data processing.

This invention discloses a groundwater pollution early warning and assessment method applicable to the produced water reinjection process in oil and gas fields, belonging to the field of groundwater environmental protection technology. It collects shallow groundwater quality indicators and deep microseismic monitoring data through shallow monitoring wells and microseismic monitoring stations deployed around the reinjection wells. A system is constructed comprising three categories of indicators: shallow conventional water analysis, microseismic monitoring, and hydrogeological data. An ARIMA model is used to dynamically set thresholds, and an improved AHP-LightGBM model is used to calculate the deep formation stability and wellbore integrity indices. A fuzzy comprehensive evaluation method is used to calculate the shallow pollution risk value. A comprehensive risk value is obtained through weighted fusion, and four early warning levels are established, along with differentiated response measures. This invention achieves collaborative monitoring of shallow water quality and deep structure, improves risk assessment accuracy through multi-algorithm fusion, provides technical support for the prevention and control of groundwater pollution in deep produced water reinjection, and is applicable to groundwater environmental safety assurance scenarios in produced water reinjection operations.