Pollution tracing method and device

Abstract

The invention discloses a pollution tracing method and device. The method comprises the following steps: inputting air quality forecast data into an air mass trajectory tracing model, and calculating to obtain backward diffusion trajectories of a point location selected at a preset moment at different heights after a preset duration; extracting longitude and latitude data sets of all heights on the backward diffusion trajectory, and drawing trajectory lines according to all the heights and the corresponding longitude and latitude data sets; and according to the emission height and position information of each pollution source obtained by the pollution source emission list and / or the pollution source general survey, screening out the pollution source of which the distance from the drawn trajectory is smaller than a preset length, and obtaining the pollution source emission information around the trajectory. The device comprises a diffusion track calculation unit, a track line drawing unit and a pollution source screening unit. According to the method and the device, respective advantages of a backward trajectory method and a pollution source information method are combined, results are associated, pollution source tracing results are further finely and scientifically focused, and guidance and direction are provided for subsequent pollution prevention and control work.

Description

technical field [0001] The present invention relates to the technical field of air pollution traceability and control, and more specifically, the present invention relates to a pollution traceability method and device. Background technique [0002] In recent years, my country's air quality has improved significantly. With the decline of pollutant concentrations, pollution control work has gradually developed towards refinement and differentiation. There are higher requirements for the traceability and accuracy of pollution sources. [0003] At present, the common pollution source tracing methods mainly include: pollution source discharge inventory method, numerical model simulation method, receptor model analysis method, etc. Among them, the numerical model simulation method uses the second-generation atmospheric diffusion model and the third-generation air quality numerical model as common methods. There is also an air mass diffusion model method that ignores the physical a...

AI Technical Summary

Problems solved by technology

[0005] Although there are various methods for traceability of pollution sources, each method has its place, and the analysis results have different indications on the regions and industries of pollution sources.

At present, there is a lack of practice of combining multiple types of methods to trace the source of pollution, so the advantages of various methods cannot be well combined, and the development of refined traceability has not advanced rapidly.

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