Multi-mode comprehensive pollution tracing method

Abstract

The invention provides a multi-mode comprehensive pollution tracing method. The method comprises the following steps: (A1) constructing a meteorological field; obtaining an overall wind field of the industrial park and wind speed profiles for processing different building blocks, and obtaining a flow field of the industrial park; (A2) constructing a diffusion model; selecting diffusion models according to different molecular weights of various pollutants, wherein the diffusion models comprise a Gaussian plume diffusion model and an SLAB diffusion model. (A3) performing pollution source traceability inversion; selecting a diffusion model according to the standard-exceeding pollutants; for a possible pollution emission source, by utilizing the flow field and simulating pollutant concentration data at each coordinate in the downwind direction under different levels of source intensities and correction coefficients, obtaining the deviation degree of a real pollutant monitoring value and a simulation value of each station, and when the deviation degree is minimum, outputting the position and the source intensity of the emission source; and outputting a pollutant diffusion range and the concentration of partial positions in the range by utilizing the position and the source intensity of the emission source, the current meteorological field and the selected diffusion model. The method has the advantages of accurate traceability and the like.

Description

technical field [0001] The invention relates to pollution monitoring, in particular to a multi-mode comprehensive pollution traceability method. Background technique [0002] At present, the main problems of the pollution status of industrial parks include: there are many pollution sources in industrial parks, and the discharge is irregular. The distribution of buildings such as chimneys, storage tanks and high towers in enterprises will change the normal diffusion path. In addition, it is difficult to close monitoring and routine monitoring in open spaces such as factory boundaries. Due to the limited time and space coverage and the low quality of enterprise emission inventories, the emission plumes and their migration and diffusion paths are amorphous, and the pollution source monitoring and traceability are difficult. However, the existing atmospheric models are mostly used for diffusion simulation when the emission source parameters are known, and it is difficult to real...

AI Technical Summary

Problems solved by technology

[0002] At present, the main problems of the pollution status of industrial parks include: there are many pollution sources in industrial parks, and the discharge is irregular. The distribution of buildings such as chimneys, storage tanks and high towers in enterprises will change the normal diffusion path. In addition, it is difficult to close monitoring and routine monitoring in open spaces such as factory boundaries. Due to the limited time and space coverage and the low quality of enterprise emission inventories, the emission plumes and their migration and diffusion paths are amorphous, and the pollution source monitoring and traceability are difficult.

This method can quickly and effectively find out the pollution source, but it needs the navigator to respond at any time; in addition, the navigating speed should not be too fast and cannot be used for all-weather monitoring. There is a certain lack of timeliness, and it is easy to miss the pollution period, and it may be possible to respond after receiving complaints In addition, low-carbon pollution such as propylene propane in petrochemical parks is serious, but the response of flying vehicles is poor, so it is difficult to detect

[0004] 2. The use of source apportionment technology has been applied in analyzing the source of VOCs and odor sources in cities. The source of source apportionment technology can be used to identify the source of emission sources and the contribution rate of different emission sources to VOCs, but the location of emission sources cannot be locked

[0005] 3. Using the gas diffusion model to simulate pollutant pollution is mostly calculated under ideal conditions such as stable meteorological field and constant wind direction. Most models currently used cannot distinguish between heavy gas and non-heavy gas; in reality, the meteorological field in industrial areas is changeable , the airflow is greatly affected by buildings, etc., and the simulation error is relatively large under the condition of a single wind direction and wind speed

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