Water body pollution diffusion simulation and prediction method and device based on concentration analysis

Abstract

A method and device for simulating and predicting water body pollution diffusion based on concentration analysis. The method includes: dividing the simulation area into small grids, and using a numerical value to record the pollutant concentration at the center of each grid. All grids correspond to The numerical value of constitutes a concentration matrix representing the distribution of pollutants, and calculates the concentration change of pollutants in each grid; among them, the concentration change process of pollutants is divided into three independent sub-processes, namely, migration process, dispersion process and decay process , analyze and calculate the concentration matrix changes caused by each sub-process, and then superimpose the sub-processes to obtain the pollutant diffusion process, and update the concentration matrix accordingly; iteratively calculate the concentration matrix according to the time step, and use the values ​​in the concentration matrix to represent the corresponding network The concentration of pollutants in the grid area can be calculated, so as to realize the simulation prediction of the pollutant diffusion process. The invention can realize efficient diffusion simulation prediction of various pollutants in water bodies, especially in large-scale water bodies (such as ocean).

Description

technical field [0001] The invention relates to the analysis and prediction of the diffusion process of pollutants in water bodies, in particular to a method and device for simulating and predicting water body pollution diffusion based on concentration analysis. Background technique [0002] With the rapid development of the global economy, the impact of human activities on the surrounding environment is increasing, and the resulting environmental pollution and ecological damage are also receiving more and more attention. In the marine field, a series of incidents caused by human factors such as industrial wastewater discharge and offshore oil spills have brought severe challenges to the marine ecological environment. In order to more accurately describe and predict the diffusion behavior of pollutants in water, a variety of diffusion models have been developed at home and abroad so far, such as the LAKECO model for lake ecosystems and eddy currents for ocean diffusion analy...

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Problems solved by technology

However, these diffusion simulation methods and analysis software also have their own defects, such as not considering the attenuation of radioactive elements, setting complex simulation parameters, requiring a variety of environmental data as input, etc., especially in the large-scale diffusion of oceans. In such a scenario, it is difficult to fully obtain the required input data such as wind field, temperature and other data that change over time, and there is a problem that the simulation takes too long and is unacceptable

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