191 results about "Groundwater pollution" patented technology

The invention provides an underground water pollutant concentration prediction method and system based on machine learning, and relates to the technical field of underground water pollutant concentration prediction.The method comprises the steps that historical data, hydrogeological parameters, meteorological data, human activity data and geochemical parameters of underground water pollutant concentration of a target area are preprocessed; dividing a training set, a verification set and a test set; constructing a preset resolution feature set based on a geochemical mechanism; selecting an adaptive machine learning model according to data characteristics and coupling a physical mechanism; performing hyper-parameter tuning by adopting Bayesian optimization, and supplementing small sample data in combination with transfer learning to complete model training; predicting the underground water pollutant concentration of the target area by using the trained model, and outputting a pollutant concentration prediction result with an uncertainty interval; the invention provides a technical scheme for predicting the concentration of underground water pollutants, which is efficient, accurate and high in adaptability.

The invention discloses a soil and groundwater pollution diffusion prediction method and system based on a time-space diagram neural network, and relates to the crossing field of environmental information modeling and artificial intelligence, and the prediction method comprises the following steps: S1, obtaining multi-source soil and groundwater monitoring data and external driving data; s2, generating a static hydraulic communication matrix and a dynamic convection dominant matrix, and constructing a multi-relation dynamic graph structure; s3, performing parallel processing on graph convolution operation of the static hydraulic connection matrix and the dynamic convection dominant adjacency matrix, capturing time dynamic characteristics, and obtaining a pollutant concentration prediction result; and S4, outputting structured prediction data and a visual product. By constructing a multi-relation dynamic graph structure fusing a hydrogeological physical mechanism and a dynamic flow field response, distortion of a pollution plume leading edge deduction trajectory caused by misjudgment of a spatial dependency relation can be avoided, so that the prediction precision of a non-uniform anisotropic pollution diffusion path is improved.

The invention discloses an early warning grade evaluation method based on an urban pollution industrial site, relates to the technical field of industrial site early warning evaluation, and solves the technical problems of incomplete overall evaluation and lack of systematic analysis process and data processing correction caused by analysis of a single evaluation index. According to the method, pollution factor indexes are integrated in a three-dimensional mode through the pollutant standard exceeding multiple mean value, the specific pollutant toxicity coefficient and the pollution plume diffusion area proportion, the pollution intensity is reflected, toxicity hazards and spatial diffusion risks are considered, the soil pollution area is calculated through the Kriging interpolation method, the groundwater pollution plume area is predicted through the MODFLOW model, and the groundwater pollution plume area is predicted through the MODFLOW model. The overlapping area is processed through a maximum area method, repeated statistics is avoided, the accuracy of pollution range data is improved, different threshold values are set, standardized matching of comprehensive indexes and early warning levels is achieved, corresponding management and control measures are defined for all the early warning levels, abstract comprehensive indexes are converted into specific practical operation guidance, and hierarchical management and control can be conveniently carried out.

The invention discloses an underground water pollution dynamic monitoring and risk early warning system, and relates to the technical field of underground water pollution monitoring and early warning. Comprising a data monitoring module used for collecting pollution index data of underground water in real time and sending the collected data to a data transmission module; the data transmission module is used for transmitting the received data to the data processing module; the data processing module is used for preprocessing and analyzing the received data and sending the processed data to the risk assessment module; the risk assessment module is used for carrying out pollution risk assessment based on the processed data and sending an assessment result to the early warning module; and the early warning module is used for sending out corresponding early warning information according to the evaluation result. According to the invention, the dynamic and real-time monitoring of groundwater pollution is realized, the accuracy of data processing is improved, the timeliness of early warning is ensured, and the loss caused by groundwater pollution is reduced.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention relates to the technical field of soil and groundwater pollution remediation, in particular to a polluted groundwater source controlling and breaking system suitable for limited space of an industrial accumulation area, which comprises a main well, a gas stripping circulating unit and a groundwater circulating unit. A blocking device composed of a packing rubber structure and a driving device is arranged in the main well, the packing rubber structure is driven by the driving device to move and intermittently inject air to expand, and an air flow channel which is dynamically opened and closed is formed between the inner wall of the main well and the unsaturated area. The vacuum pump device builds negative pressure on the upper portion of the main well, so that purified clean gas enters an unsaturated area in an intermittent pulse mode through the peripheral injection well, and soil gas is induced to flow in an oscillating mode under cooperation of the dynamic gas flow channel. Groundwater extracted by the centrifugal pump is purified by the gas stripping area and the underground activated carbon filtering device and then is discharged into the top of the unsaturated area through the drainage device in an intermittent wave mode, the system is suitable for pollution treatment in the limited space of the industrial accumulation area, and targeted source control and long-acting reduction are achieved.

The invention belongs to the field of soil environment pollution simulation and prediction, and provides a prediction method based on a two-point chemical unbalanced model, which is used for quantitatively evaluating the effect of regulating and controlling the migration behavior of p-nitrophenol in acid red soil by straw stalk biochar. According to the method, a biochar-red soil composite medium system is constructed, a soil column leaching experiment is carried out to obtain penetration curve data, a two-point chemical unbalance model in CXTFIT software is utilized to carry out parameter inversion, and key parameters such as a retardation factor, a two-region distribution coefficient, a mass transfer coefficient and a liquid phase degradation coefficient are accurately identified. Model verification shows that the goodness of fit is high, and a parameter change rule reveals the inherent mechanism of enhancing the pollutant retention capacity, changing the proportion of fast and slow adsorption sites and influencing mass transfer kinetics by the biochar. Based on the verified model, the long-term migration behavior and pollution risk of p-nitrophenol under different environmental conditions can be simulated, and a scientific basis is provided for groundwater pollution control and remediation strategy optimization.

The invention relates to the technical field of underground water monitoring, in particular to a high-precision underground water pollution plume migration prediction and source identification method, which comprises the steps of constructing a graph structure, simulating an underground water convection-dispersion process by using a space-time graph neural network, introducing a physical equation residual error constraint to train a prediction model, and converting source identification into an optimization problem. A multi-task strategy is adopted to synchronously identify a sparse source position and reconstruct a release history of the sparse source position, a model is finely adjusted and updated according to gradient descent cooperative solution, and uncertainty is quantified. According to the high-precision groundwater pollution plume migration prediction and source identification method, source position identification and release history reconstruction are synchronously realized through a multi-task strategy; organizing data by using a graph structure, constructing static and dynamic feature vectors, and comprehensively describing pollution migration space-time characteristics; a multi-stage curriculum learning, a splitting algorithm and a Bayesian optimization initialization strategy are adopted, gradient is calculated in combination with automatic differential, and a multi-source uncertainty decomposition framework is constructed to quantify uncertainty.

The invention discloses an oil and gas site leakage pollution prediction method based on an HGS, and relates to the field of oil and gas site pollution prediction, and the method comprises the following steps: constructing an integrated three-dimensional geological grid comprising a surface water body, an aeration zone and a water-bearing layer through an HGS platform; on the basis of an integrated three-dimensional geological grid, pollution migration of pollutants in the shaft leakage process is simulated through a three-dimensional underground water flow model, leakage pollution plume changes of the pollutants in underground water are depicted through a solute migration function, and spatial and temporal distribution data of pollution plume migration are output; and obtaining a pollution prediction result based on the spatial and temporal distribution data of pollution plume migration. According to the method, the spatio-temporal evolution law of underground water pollution of the oil and gas field can be accurately displayed, and the problem that in the prior art, only simplified simulation can be conducted on solute transport in an underground water system, oil and gas field leakage pollution scenes under multiple working conditions cannot be accurately simulated, and consequently the oil and gas field leakage pollution prediction accuracy is low is solved.

The invention discloses a fractured stratum groundwater pollution source positioning method based on deep learning enhanced inversion, and relates to the field of pollution source positioning, and the method comprises the steps: constructing a space-time concentration response data set containing complex physical field characteristics based on hydrogeology and pollution source parameters, and training a deep learning substitution model according to the space-time concentration response data set; the complex groundwater solute transport process is efficiently approximated, so that the problem that traditional numerical simulation consumes too long time is solved. On the basis, an integrated inversion framework is constructed, time sequence concentration data observed on site is combined with a substitution model, and global optimization is carried out by utilizing a genetic algorithm. Not only can a nonlinear high-dimensional parameter space be processed, but also a space-time evolution rule in observation data can be fully excavated, finally, synchronous accurate inversion of pollution source three-dimensional coordinates, dynamic release history and key hydrogeological parameters is achieved, and the defects that a traditional method is low in recognition rate and poor in timeliness under complex geological conditions are effectively overcome.

The application discloses a method for repairing chlorinated groundwater pollution based on carbon dioxide nanobubbles, and the method is characterized in that nZVI, H2O2 and EDDS reagents are injected in a time sequence at different stages, and CO2 nanobubbles are used as a multifunctional medium throughout the process. The CO2 nanobubbles not only continuously remove the passivation layer through in-situ acidification, thereby fundamentally promoting the reduction effect of nZVI on chlorinated organic matter, but also couple a subsequent Fenton oxidation process, thereby greatly promoting the complete oxidation effect of toxic intermediates, effectively inhibiting the conversion of the final reaction product Fe 2+ Into secondary minerals, and controlling the risk of blockage from the source. Through the design of in-situ generation of catalyst Fe 2+ And the final removal of iron ions, the application maximizes the dosage of exogenous chemicals and the final residual, overcomes the environmental risks that may be introduced by traditional technologies or cause permanent physical damage, and realizes efficient, complete and sustainable repair of chlorinated organic pollutants in groundwater. 3+ ​

The invention discloses a device for repairing underground water pollution of an in-production enterprise by combining bioelectricity-Fenton with a circulating well. The device comprises an extraction well which is vertically arranged underground and is communicated with underground water, and a suspended matter separation mechanism, an electrode display mechanism and a strong oxidation mechanism which are sequentially connected with the extraction well, the suspended matter separation mechanism comprises a separation containing tank communicated with the extraction well and provided with an upward opening, a separation tank top cover with a downward opening is arranged at the top of the separation containing tank, a plurality of separation input pipes communicated with the interior of the separation containing tank are arranged at the bottom of the separation containing tank, and a plurality of suspended matter output pipes communicated with the interior of the separation containing tank are arranged on the side wall of the separation containing tank. The top cover of the separation tank is connected with a separation output pipe which vertically extends in a sliding manner; the device integrates four core technologies of physical separation, electrochemical reaction, Fenton strong oxidation and biodegradation, internal circulation of an underground water body is formed through the circulating well, and underground water discharge or secondary pollution in the remediation process is avoided.

The invention belongs to the technical field of underground water pollution remediation functional catalytic materials and water treatment, and particularly relates to a modified iron heterojunction biomass slow-release material, a preparation method thereof and application of a coupled electric field in underground water organic pollutant remediation. The mushroom biochar is used as a carrier to load the modified zero-valent iron, so that the problem of iron agglomeration is effectively relieved; and the modified zero-valent iron grows in the three-dimensional pore channel of the charcoal in situ, so that the slow release of the iron active component can be realized, and the utilization efficiency of the oxidizing agent is improved. An electric field is built in the iron-carbon structure reinforcing material, so that the problem of slow mass transfer in an underground water medium is solved, and the surface accessibility of an oxidizing agent and pollutants is improved. The material not only can reduce the invalid consumption of an oxidizing agent caused by overhigh local Fe < 2 + > concentration, but also can drive directional electron migration through an electric field, realizes space-time matching and dynamic regulation and control of an electron transfer rate and an iron supply rate, forms an in-situ regeneration closed-loop system, and has a good application prospect in groundwater remediation.

The present application relates to the technical field of groundwater pollution remediation, and particularly relates to a method and device for in-situ remediation of hexavalent chromium contaminated groundwater, wherein the device comprises a multifunctional well group, a medicament supply system, an aeration system, a monitoring system and a control system; the multifunctional well group comprises a plurality of multifunctional wells; the medicament supply system is used for pretreating medicaments, modified composite reducing agents and composite functional bacteria liquid respectively; the control system is used for receiving monitoring data; the control system is also used for displaying monitoring data and equipment operating states, and setting operating parameters by a user; the control system is also used for automatically adjusting medicament dosing amount, aeration flow and aeration pressure according to monitoring data and operating parameters set by the user. Through the design of the multifunctional well group, the medicament supply system and the aeration system, the hexavalent chromium contaminated groundwater can be simultaneously subjected to chemical reduction, biological reinforcement and adsorption fixation, so that the three processes are coordinated to realize rapid, efficient and long-acting remediation of the hexavalent chromium contaminated groundwater.

The invention provides a liquid crystal pollutant underground water detection system based on fluorescence tracing, and relates to the technical field of underground water environment monitoring and pollution prevention and control. According to the system, three types of core structures BAs, CBAs and FBAs of the LCMs serve as targets, a specific fluorescent probe is designed, a water sample is accurately obtained through an underground water in-situ sampling module, and after fluorescence signal amplification and anti-interference processing are conducted, LCMs type recognition and concentration quantification are achieved in combination with a machine learning algorithm. The core innovation lies in the structural adaptive design of the targeted fluorescent probe, the underground water quality anti-interference technology, engineering in-situ detection integration and multi-component synchronous analysis. Practice verification shows that the detection limit of the system to BAs, CBAs and FBAs LCMs is as low as 0.01-0.05 ng / L, the response time is less than or equal to 30 min, the turbidity resistance and ion interference resistance are high, the system is adaptive to engineering scenes such as in-well monitoring and leachate tracing, rapid screening and dynamic tracking of underground water LCMs pollution can be realized, and engineering technical support is provided for underground water pollution prevention, control and restoration.

The utility model discloses an in-situ regulation and control device for underground water pollutant conversion conditions, and belongs to the technical field of underground water in-situ remediation. The in-situ regulation and control device comprises a case, a top plate, a stirring rib, a suspension rope and an aeration system, a submersible motor is arranged in the case, and an output shaft of the submersible motor penetrates through the top surface of the case; the top plate is fixed to the top face of the machine box through a supporting rod and is parallel to the top face of the machine box. One end of the stirring rib is connected with an output shaft of the submersible motor, and the other end is rotationally connected with the top plate; the suspension rope is connected with the top plate; the aeration system comprises an air stone, an aeration pipe and a regulation and control air source, and the air stone is arranged on the top surface of the case and is communicated with the regulation and control air source through the aeration pipe. The stirring ribs are driven by the submersible motor to rotate, so that more regulation and control gas blown out of the bubble stone diffuses in the radial direction of the well casing, the diffusivity of the regulation and control gas to underground water is improved, and the in-situ regulation and control effect of underground water pollutant conversion conditions is enhanced.

This invention discloses a method for the simultaneous preparation of micronized and stabilized zero-valent iron (ZVFe) based on ball milling with terephthalic acid, belonging to the field of groundwater pollution remediation materials. The method includes the following steps: 1) incorporating terephthalic acid into micron-sized ZVFe powder and mechanically ball milling it; 2) cleaning the material with a solvent and drying it to obtain micronized and stabilized ZVFe reducing material. This invention simultaneously achieves the micronization and stabilization of ZVFe. This method enhances the reducing activity, internal surface hydrophobicity, and electron selectivity of ZVFe materials, improves their reducing performance and electron selectivity for pollutants such as halogenated hydrocarbons and heavy metals, effectively inhibits the oxidative deactivation of ZVFe materials in the aquatic environment and the hydrogen evolution side reaction with water, enabling ZVFe materials to maintain high reducing activity stably in water for a long period. This invention solves the technical problems of poor stability and difficult storage of micronized ZVFe materials in water, which is beneficial for reducing material replacement frequency and resource consumption.

The application discloses a kind of remediation devices for groundwater pollution treatment, it is related to the technical field of groundwater pollution treatment, it includes support pedestal, the upper surface of support pedestal is fixedly installed with support column, support column is equipped with the repair treatment pool for repairing groundwater, first water pump is equipped on repair treatment pool, the output of first water pump is connected with water outlet pipe, the water outlet of water outlet pipe extends to the inside of repair treatment pool, the input of first water pump is connected with water inlet pipe, the water inlet of water inlet pipe extends to groundwater and is connected with water collector;Water collector includes balance disc, sealing sleeve is equipped on the bottom center position of balance disc, connecting sleeve is equipped in sealing sleeve, the water inlet of water inlet pipe penetrates balance disc, and is connected with connecting sleeve and is communicated.This application has the effect of effectively gathering and guiding groundwater from different directions, thereby improving water collection efficiency.

The utility model discloses a mobile groundwater pollution control device which comprises a base, two universal wheels are installed on the left portion and the right portion of the lower end of the base respectively, a storage device is installed on the front portion of the upper end of the base, a water storage tank is installed on the left portion of the upper end of the base, and a first water pump is installed on the right portion of the upper end of the water storage tank. The mixing kettle is installed on the right portion of the upper end of the base, the connecting pipe is jointly installed at the upper ends of the mixing kettle and the first water pump, the stirring device is installed in the middle of the upper end of the mixing kettle, the heating device is installed on the lower portion of the right end of the mixing kettle, and the adding opening is formed in the right portion of the upper end of the mixing kettle. According to the movable underground water pollution prevention and control device, the servo motor drives the connecting column, the connecting column further drives the stirring column and the stirring shaft to rotate along with the connecting column, potassium permanganate is stirred, and the heater is matched to drive the heating pipe to heat water in the kettle body. Therefore, the mixing efficiency of potassium permanganate is improved.

The system comprises a data acquisition and input module, a data preprocessing module, a three-dimensional geological construction module, a solute transport module and a visualization and interaction module, the data acquisition and input module is used for multi-source data acquisition, the data preprocessing module is used for data cleaning and sorting, and the three-dimensional geological construction module is used for three-dimensional geological construction. The three-dimensional geological construction module is used for constructing a three-dimensional geological model, the solute transport module is used for simulating the transport of pollutants under the action of underground water flow, and the visualization and interaction module is used for displaying simulation results and performing user interaction. According to the invention, an improved pollutant transport channel intelligent description and dynamic modeling algorithm is provided to construct a three-dimensional geologic structure model, and an improved pollutant transport high-precision feature-operator splitting algorithm is provided to simulate the transport of pollutants under the action of underground water flow. And a better scheme is provided for the underground water pollutant flow direction determination method and system based on multi-source data detection.

The invention provides an experimental device and method for restoring groundwater pollution, and relates to the technical field of groundwater restoration. The experimental device comprises an experimental box body, a water supply pump and a sewage box body, a plurality of experiment cavities are formed in the experiment box body, each experiment cavity comprises a water inlet cavity, a repairing cavity and a collecting cavity, a bottom supporting plate is arranged in the repairing cavity, and the repairing filler is supported on the bottom supporting plate; a plurality of collecting cavities are formed in the outer wall of the experiment box body, a plurality of transverse partition plates are arranged in each collecting cavity, the transverse partition plates divide the collecting cavities into a plurality of water collecting cavities which are oppositely arranged up and down, each water collecting cavity is communicated with the repairing cavity through a communicating hole, a plurality of sampling pipes are further fixedly arranged on the outer wall of the experiment box body, and each sampling pipe is communicated with one water collecting cavity. The experimental device disclosed by the invention has the beneficial effects that by opening the sampling pipes with different heights, effluent water samples of different filler layer heights of the remediation cavity can be obtained, and the removal rate of pollutants in each filler layer can be accurately analyzed, so that the remediation performance difference of different filler layers at different depths can be accurately evaluated.

The utility model discloses an underground water pollution monitoring device which comprises a multi-parameter water quality detection instrument, the box body is assembled on the outer side of the multi-parameter water quality detection instrument, and a partition plate and a baffle plate which are symmetrically distributed are fixedly connected in the box body; the lifting assembly comprises a pull rod penetrating through the side face of the box body in a sliding mode, a handle fixedly connected with the end, penetrating out of the outer side of the box body, of the pull rod and a pressing column fixedly connected with the end, inserted into the box body, of the pull rod; the limiting assembly comprises a fixed column fixedly connected with the box body and a rotating plate rotationally connected with the fixed column; the design of the horizontal table top capable of placing test tubes, reagents and other detection tools is adopted, the opened detection box cover and the placing plate are in a horizontal state through the box body and the detection box cover which are of a flat open structure, the test tubes, the reagents and other detection tools stored in the box body can be placed on the detection box cover and the placing plate, and the test tubes, the reagents and other detection tools can be placed under the elastic action of the elastic band. The test tube can be quickly rotated to achieve the effect of mixing a mixed solution in the test tube.

The application provides a low-permeability stratum contaminated groundwater remediation device and method, which comprises an industrial computer, the industrial computer is used for controlling the working state of an extraction mechanism according to the information inside a pumping well, a first monitoring mechanism and a second monitoring mechanism monitor the concentration change of groundwater pollutants, and feed back the groundwater pollution condition to the industrial computer, the extraction mechanism extracts groundwater into the inside of a groundwater purifier for treatment, and a transmission mechanism changes the position of the extraction mechanism according to the distribution of the groundwater pollutants; the low-permeability stratum contaminated groundwater remediation device and method have the advantages of improving the groundwater extraction efficiency, effectively improving the extraction effect of the groundwater pollutants, and reducing the operation cost of the groundwater extraction.

The utility model relates to the technical field of groundwater pollution treatment, and discloses a multi-stage filtering device for groundwater pollution treatment, which comprises a filtering barrel, a connecting assembly is arranged at the top of the inner wall of the filtering barrel, and three hollow columns are arranged outside the connecting assembly. A filter plate I, a filter plate II and a filter plate III are fixedly connected to the outer parts of the three hollow columns respectively. Through cooperative use of the connecting assembly, the rotating assembly, the sliding assembly, the first semicircular mounting plate, the second semicircular mounting plate, the third semicircular mounting plate, the ejection column, the second ejection column, the third ejection column, the driving assembly and other structures, impurities in meshes of the first filter plate, the second filter plate and the third filter plate can be cleaned; the condition that underground water cannot quickly circulate due to the fact that the filter plate I, the filter plate II and the filter plate III are blocked by impurities is avoided, and the filtering efficiency and the filtering effect of the filtering device are improved.

The present application relates to the technical field of groundwater pollution remediation, and in particular to a distiller's grains-based slow-release material, a preparation method and application. The method uses distiller's grains material as a carbon source, chitosan and gelatin as carriers, and prepares the distiller's grains-based slow-release material through emulsification and cross-linking. The method uses natural biomass distiller's grains as a slow-release carbon source, chitosan and gelatin as carrier materials, and synthesizes a new slow-release material with environmental friendliness, low cost, adjustable morphology and slow-release performance through emulsification and cross-linking, to provide a carbon source and an electron donor required by functional microorganisms and enhance the activity of the functional microorganisms. The material has the advantages of low cost and good effect, can effectively implement in-situ remediation of groundwater pollution, and on the premise of realizing economic environmental protection, high efficiency, stability and no secondary pollution, can strengthen the in-situ functional microorganism remediation effect.

The application discloses low-cost sulfidized nano zero-valent iron synthesized by using pyrite as raw material and application thereof. The low-cost sulfidized nano zero-valent iron is obtained by using cheap pyrite powder as raw material, adding a small amount of anhydrous FeCl3, and through ball milling, drying and hydrogen reduction. The pyrite powder to which a small amount of anhydrous FeCl3 is added is ball milled by using zirconia ball milling beads which are easy to clean but not easy to be polluted, and then the sulfidized nano zero-valent iron is prepared after drying and reduction. By adjusting parameters such as ball powder ratio, FeCl3 addition amount, heating rate and holding time, the low-cost sulfidized nano zero-valent iron with a particle size of 200-300 nm, zero-valent iron content accounting for more than 90% of total iron content and preparation cost being 11% of that of a laboratory liquid-phase synthesis method is prepared. The material can effectively degrade trichloroethylene (TCE) and florfenicol (FF), has a small hydrogen production amount and a high electron efficiency. The preparation method is simple and easy to operate, has a low cost and has a large-scale production prospect, the degradation performance of pollutants is close to that of the laboratory-prepared sulfidized nano zero-valent iron, and far exceeds that of nano zero-valent iron, and therefore the material has a prospect of being applied to actual groundwater pollution remediation.

The invention discloses an underground water arsenic pollution multiphase flow reaction migration substitution simulation method based on cDC-GAN, and relates to the technical field of underground water pollution simulation. The technical scheme is characterized by comprising the following steps: constructing a numerical model for simulating underground water multiphase flow and pollutant reaction migration process; the numerical model can output pollutant concentration spatial distribution according to input permeability field parameters and well location layout parameters; after the combination of permeability field parameters and well location layout parameters is changed, the numerical model is operated to obtain a data set, and then a training data set is formed; wherein the data set comprises input data and output data, the input data are permeability field and well location layout parameters, and the output data are corresponding pollutant concentration spatial distribution; constructing a cDC-GAN substitution model, wherein the cDC-GAN substitution model comprises a generator and a discriminator; the method has the effect of expanding the application scene of groundwater pollution simulation.

This invention discloses an acid-resistant sealing grouting material suitable for the treatment of acidic mine water inrush, its preparation method, and its application. It belongs to the technical field of mine groundwater pollution prevention and control and mine water hazard management. The acid-resistant sealing grouting material, by weight, comprises: 8-12 parts nano-hydroxyapatite, 1.5-3 parts sodium alginate, 5-8 parts porous adsorbent material, 100 parts cement, 25-35 parts water glass, 3-5 parts quicklime, 0.5-1.0 parts retarder, and 50-65 parts water. The acid-resistant sealing grouting material of this invention can immobilize iron and manganese, exhibits strong acid resistance and good pressure resistance, and is suitable for grouting materials used in sealing goaf areas and fissures in closed mines.

The present application belongs to the technical field of numerical simulation of underground water in mine, and discloses a GMS cooperated with GIS health risk prediction method for backfilling underground water in open-pit mine. The present application combines with geological data around mining area, carries out fine 3D geological modeling through GCAD, EVS, Tin and Solid module in GMS, and on the basis of analyzing hydrogeological conditions of mining area, generalizes boundary conditions and aquifer, determines source and sink, hydrogeological parameters, establishes relatively accurate 3D underground water seepage model of open-pit mine by GMS, and identifies and verifies the model combining with underground water field monitoring data; determines each parameter of solute transport model through static leaching test, dynamic adsorption test and multi-parameter free energy relationship model, establishes solute transport equation of biological, chemical and seepage mutual action by multiple regression linear analysis, outputs solute transport result of open-pit mine backfilling pollutant in different stress periods of simulation period by MT3DMS, disperses solute transport result by Scatter in GMS and Field Calculator based on Python algorithm, and visually expresses in GIS combining with health risk prediction model, so as to solve the problem that potential health risk of backfilling material to underground water pollution in the process of open-pit mine backfilling mining or backfilling treatment is difficult to predict.

The application discloses a kind of factory area soil and groundwater pollution risk control method, comprising: obtaining current time and historical time under factory area dataset;Based on the factory area dataset, establish risk prediction model;Based on risk prediction model, the risk level distribution in factory area is divided and repaired;For high-risk area, in-situ chemical oxidation and permeation reaction wall are used for repair;For medium-risk area, plant repair or microbial repair is used;Low-risk area does not need to be repaired;The method of the present application can accurately predict the risk level distribution in the factory area according to the geological parameters of the factory area, the pollution monitoring data and the environmental dynamics, by constructing a risk prediction model that integrates the physical mechanism and the advantages of machine learning, the risk classification output is realized, the accuracy of risk assessment and the repair efficiency are improved, and the pertinence, economy and environmental benefits of pollution control are significantly improved.