A method for automatic traceability of groundwater pollutants on site

Abstract

The invention discloses a method for automatically tracing the source of groundwater pollutants in a site, including: A. Obtaining the shortest time for pollutants to travel from the main test hole to each observation hole in the main direction through a dispersion test; In order to calculate the longest distance and the shortest distance that pollutants may reach from the pollution source point to the downstream during the interval between two monitoring under different hydraulic gradients; B. Construct a half-space model applicable to the target area, divide Half-space Ai, Ai', determine the effective search half-space; C. In the half-space Ai' with attribute flag (A) = 0, lock the scope of the pollution source; D. Compare the monitored pollutants with the characteristic pollutants within the scope of the pollution source Carry out a comparison to locate the source of pollution. The method of the present invention mainly uses the parameters obtained from the dispersion test to conduct superposition analysis of multiple half-space models centered on pollutant monitoring holes and possible pollution devices, and uses the method of elimination and induction to eliminate interference items to achieve the purpose of source tracing.

Description

technical field [0001] The invention relates to the technical field of traceability of groundwater pollutants, in particular to an automatic traceability method for groundwater pollutants at a site based on a half-space model and a dispersion test. Background technique [0002] Due to the strong concealment and suddenness of groundwater pollution on site, it is often difficult to determine the source of pollutants when pollution is found. Rapid identification of the location of pollution sources is of great research value for site restoration and control and formulation of prevention and control measures. Traceability of groundwater pollutants (groundwater pollution source analysis) is to find out the location of pollution sources and the history of pollutant migration and transformation through limited observation data, which is the first step in groundwater pollution control. [0003] At present, methods for traceability of groundwater pollutants can be divided into geoche...

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Problems solved by technology

[0003] At present, methods for traceability of groundwater pollutants can be divided into geochemical footprint method and mathematical simulation method. The geochemical footprint method alone cannot completely solve the problems of tracking the location of pollution sources and the evolution of pollutants over time, while the mathematical simulation method is limited by aquifer parameters, Due to the limitations of factors such as the concentration of pollutants and the uncertainty of the model itself, it cannot fully meet the requirements of practical applications.

Most studies based on these methods focus on simple ideal examples, which are difficult to deal with practical engineering problems, and the calculation of the traceability model is huge and time-consuming. The parallel technology of the calculation model requires high professional quality of the user, which limits it. Promotion among general researchers or users

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