A Traceability Analysis Method for Urban Air Pollutants
A technology of air pollutants and analysis methods, applied in the field of traceability analysis of urban air pollutants, can solve the problems of high cost and the proportion of different pollution sources is not given.
Active Publication Date: 2020-10-20
BEIJING VIREADY TECH CO LTD +1
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Problems solved by technology
The precise positioning of air pollution sources has always been a technical problem in this field, and there is no practical and feasible technical method to achieve accurate positioning of air pollution sources
[0003] The existing air pollution source location methods are mainly divided into two categories, one is based on the method of isotope tracking, this method is mainly aimed at determining the location of heavy metal pollution sources, and the cost is high; the other is to directly use the Gaussian puff model , the position of the pollution source is deduced by the method of coordinate transformation, and this method is only an independent coordinate system centered on a single accident point, and the model does not give the proportion of different pollution sources to the same receptor point
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[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0043] Aiming at the problem that different pollution sources contribute differently to the pollution contribution ratio of receptor points in the current air pollution source positioning method, the present invention provides a traceability analysis method for urban air pollutants, and calculates the dominant wind direction and pollution through the monitoring data of micro-stations and national stations During the key period, and based on the Gaussian plume model, the contribution ratio from the pollution source to the receptor ...
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The invention provides a tracing and analyzing method for urban air pollutants. The tracing and analyzing method comprises the following steps: collecting monitoring data of various pollutant concentrations in the air by monitoring points arranged in a city; calculating a daily prevailing wind direction and major pollution time periods by combining the monitoring data, and air quality indexes of acceptor points and neighboring country stations; selecting mini-type stations in an upwind wind direction and adjacent four wind direction regions according to the daily prevailing wind direction andthe major pollution time periods; carrying out time correction on the selected mini-type stations; combining the mini-type stations subjected to the time correction and data of the acceptor points tocalculate sequencing indexes; selecting the mini-type stations with the front k sequencing indexes and carrying out empathized analysis; calculating a concentration contribution rate from a mini-typestation periphery pollution source to the corresponding mini-type station and returning back front N pollution sources with the highest concentration contribution rate. According to the tracing and analyzing method provided by the invention, the contribution rate of the pollution source to the mini-type station can be directly displayed and pollution degrees of the different pollution sources aredisplayed, so that accurate positioning of the pollution sources is realized.
Description
technical field [0001] The invention relates to the field of environmental science and technology, in particular to a source-tracing analysis method for urban air pollutants. Background technique [0002] In recent years, with the sustained and rapid economic and social development, industrialization and urbanization have intensified, energy consumption has increased rapidly, air pollution has become increasingly serious, and the total amount of air pollutant emissions has remained high. With the increase of pollutant discharge, people's living environment is deteriorating day by day, smog weather is frequent, smog has seriously damaged the image of the city, affected social and economic production activities, and brought serious harm to people's health. Accurate positioning of air pollution sources has always been a technical problem in this field, and there is no practical and feasible technical method to accurately locate air pollution sources. [0003] The existing air ...
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IPC IPC(8): G01N33/00G01W1/02
CPCG01N33/0062G01W1/02Y02A50/20
Inventor 李兴华徐喜荣裴广战田建立
Owner BEIJING VIREADY TECH CO LTD