New algorithm for atmospheric environment capacity by using region air quality model

Abstract

The invention provides a new algorithm for an atmospheric environment capacity by using a region air quality model (RAQM). The new algorithm comprises the following computation steps: utilizing a meso-scale meteorological model to perform analog computation on an average value of year-round meteorological elements per hour in an estimation region to obtain uout and uin; utilizing the RAQM to perform analog computation on an average value of pollutant concentration per hour in an estimation year in the estimation region to obtain c; using a process analysis module to output transportation volumes Fout and Fin, dry deposition volume Ddry, wet deposition volume Dwet and chemical conversion volume T of pollutants per hour; performing the computation to obtain V and Asection; using cstandard to obtain a static volume of each atmospheric pollutant in the estimation region; and according to an expression of atmospheric environment capacity Q, performing the calculation to obtain a total environmental volume of atmospheric pollutants in the estimation region. With the adoption of the new algorithm provided by the invention, not only is the maximal capacity of atmospheres to contain the pollutants, regional transportation features of the atmospheric pollutants are reflected, but also key factors of influencing the pollutants in the estimation region are obtained, and assessment judgment basis such as more reasonable theories, more reliable data and more credible result can be provided for atmospheric environmental impact assessment.

Description

technical field [0001] The invention relates to the technical field of environmental impact assessment, in particular to a method for calculating atmospheric environment capacity by using a regional air quality model. Background technique [0002] The basic methods of atmospheric environmental capacity calculation mainly include A-P value method, simulation method and linear programming method (multi-source model plus mathematical programming method). The A-P value method takes the air quality standard as the control target, and calculates the atmospheric environmental capacity by using the allowable limit value of the total discharge in the control area and the allowable limit value of point source discharge on the basis of the diffusion and dilution law of air pollutants. The simulation method is a method to calculate the dispersion of pollutants in a region based on the atmospheric dispersion model. The characteristic of the linear programming method is to link the pollu...

AI Technical Summary

Problems solved by technology

In addition, it is assumed that the pollutants in the area are evenly distributed. This assumption is likely to cause the concentration of pollutants to exceed the standard in places where the pollution sources are densely distributed.

[0007] There is often such a problem when using the A-P value method: after the total amount control is implemented with the A value method in the total amount control area, when the total amount control area meets the annual allowable total discharge limit of pollutants, the daily average concentration of pollutants and hourly The average concentration may not necessarily meet the national or regional air environmental quality standards

[0015] It can be seen that the calculation method of atmospheric environmental capacity in the prior art has many shortcomings and irrationality in application, and it can no longer be applied to environmental impact assessment work of various scales, which affects the final judgment of environmental impact assessment work