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Simplified simulation method for atmospheric behaviors in behavior simulation of chemical substance environment system

A technology for chemical substances and simulation methods, which is applied in the field of environmental risk assessment, environmental risk management, and chemical substance environmental risk analysis. It can solve problems such as excessive conservativeness, achieve lower costs, simplify simulation algorithms, and reduce complex calculation requirements.

Active Publication Date: 2021-11-26
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

In fact, the toxic effect of chemical substances on organisms is related to the exposure time and specific life stages of organisms. The harmful threshold concentration of chemical substances varies significantly with the exposure time and biological life stages such as seasonality. Therefore, long-term stable conditions are used to design The method of determining PNEC and PEC has an over-conservative bias while adhering to the principle of conservatism

Method used

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  • Simplified simulation method for atmospheric behaviors in behavior simulation of chemical substance environment system
  • Simplified simulation method for atmospheric behaviors in behavior simulation of chemical substance environment system
  • Simplified simulation method for atmospheric behaviors in behavior simulation of chemical substance environment system

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[0238] 1. Selection of research area

[0239] In this test, the research area is selected as the upper reaches of the Liuyang River in Hunan, which is located in the east of Changsha City, Hunan Province, bordering Jiangxi Province, with a drainage area of ​​about 1990 square kilometers. Image 6 shown. The region is significantly affected by global warming, manifested in the increase in extreme weather events, abnormal precipitation in flood seasons, and frequent droughts and floods. The upper reaches of the Liuyang River have a humid subtropical monsoon climate, with an annual average temperature of 17.5°C and an annual average precipitation of 1550mm. Precipitation is mainly concentrated from March to July, accounting for about 65% of the total annual precipitation. The watershed is mainly divided into the Daxi River Basin and the Xiaoxi River Basin, and the two rivers meet at the mouth of the Shuangjiang River.

[0240] 2. Input data

[0241] 1) Geographic information d...

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Abstract

The invention provides a simplified simulation method for atmospheric behaviors in behavior simulation of a chemical substance environment system simulation coupled with a hydrological process, and the method comprises the steps: calculating the total variable quantity of the chemical substances in the atmosphere of a sub-basin, and calculating the concentration of the chemical substances in the atmosphere according to the total variable quantity, wherein the horizontal migration of the chemical substances in the atmosphere is simulated by taking the spatial range corresponding to the sub-basin as precision, and the dry sedimentation part is calculated according to the precision of the hydrological basic unit when the chemical substances in the atmosphere migrate in the vertical direction. The complex calculation requirement for migration and transformation of chemical substances in the atmosphere is reduced with the cost of low atmospheric diffusion calculation precision, and the chemical substance environment system exposure model coupled with the hydrological process can quickly complete calculation on the premise that the prediction precision of the surface environment medium exposure concentration is ensured.

Description

technical field [0001] The invention relates to the fields of chemical substance environmental risk analysis, environmental risk assessment and environmental risk management, and in particular to a simplified simulation method for atmospheric behavior of chemical substances in environmental system simulation coupled with hydrological processes for regional or watershed environmental exposure and risk assessment. Background technique [0002] While various chemical substances are manufactured to enrich human life, the environmental risks they bring may endanger public health and all kinds of life in the ecosystem, which has become one of the core contents of the development of the chemical industry and environmental safety governance at home and abroad. Environmental risk analysis of chemical substances is the basis of environmental risk assessment and environmental risk management; and environmental risk needs to predict the concentration of chemical substances in various env...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06F119/02
CPCG06F30/20G06Q10/06311G06Q10/0635G06F2119/02Y02A90/10
Inventor 孟耀斌李想宋昊政
Owner BEIJING NORMAL UNIVERSITY
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