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Method for analyzing pollution source based on rapid clustering and chemical mass balance

A mass balance and pollution source technology, applied in the field of pollution source analysis, can solve the problems that the non-linear characteristics of pollution source spectrum are not considered, and the identification results cannot truly reflect the corresponding relationship between factor loads and pollution source spectrum, so as to achieve the value of wide application and strong practicability Effect

Inactive Publication Date: 2019-08-23
NORTH CHINA INST OF AEROSPACE ENG +1
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Problems solved by technology

Most of these methods do not consider the nonlinear characteristics of the pollution source spectrum, and the identification results cannot truly reflect the corresponding relationship between the factor load and the pollution source spectrum.

Method used

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  • Method for analyzing pollution source based on rapid clustering and chemical mass balance
  • Method for analyzing pollution source based on rapid clustering and chemical mass balance
  • Method for analyzing pollution source based on rapid clustering and chemical mass balance

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Embodiment

[0036] A method for analyzing pollution sources based on fast clustering and chemical mass balance, comprising the following steps:

[0037] (1) The identification of factor loads based on the pollution source spectrum is regarded as a multi-parameter pattern identification problem, and the pollution source is identified by using fast cluster analysis. First, the data is preprocessed and initialized; then the training sample pair is output.

[0038] The method for identifying sources of pollution by the fast cluster analysis comprises the following steps:

[0039] a) choose k objects in n data objects as the initial cluster center;

[0040] b) For each remaining object, assign it to the nearest cluster according to its distance from the center of each cluster;

[0041] c) Using the formula Z j =∑ ienj x i , where i = 1, 2, ..., n; j = 1, 2, ..., k Recalculate each class center and use the formula

[0042] Calculate the criterion function value J i ;

[0043] d) Comput...

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Abstract

The invention discloses a method for analyzing a pollution source based on rapid clustering and chemical mass balance, which comprises the following steps: firstly, taking factor load identification based on a pollution source spectrum as an identification problem of a multi-parameter mode, identifying the pollution source by utilizing rapid clustering analysis, and firstly, carrying out data preprocessing and initialization; outputting a training sample pair; and then calculating the contribution rate of the pollution source of the factor load by utilizing the identified classification modeland a chemical mass balance method to realize the source analysis of the characteristic pollutants. According to the method, the pollution source can be quickly and accurately analyzed.

Description

technical field [0001] The invention relates to the technical field of pollution source analysis, in particular to a method for analyzing pollution sources based on fast clustering and chemical mass balance. Background technique [0002] Source apportionment is a method to study the impact and effect of pollution sources on the surrounding environmental pollution. The current pollution source apportionment techniques can be roughly divided into three types: inventory analysis, diffusion model and receptor model. The inventory analysis method is a source apportionment method to establish a list model by observing and simulating the source emissions, emission characteristics, and geographical distribution of pollutants; the diffusion model is a predictive model, which is input by inputting the emission data of each pollution source and Relevant parameter information is used to predict the spatial and temporal changes of pollutants; the receptor model is a type of technology t...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06Q50/26
CPCG06Q50/26G06F18/23213G06F18/241
Inventor 陈锋张云峰刘凤明曹张伟孟凡生梅凯刘艳梅司秀荣周建华丁玎刘晓立
Owner NORTH CHINA INST OF AEROSPACE ENG
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