Underground water type drinking water source pollution source analysis method

An analytical method and technology of pollution sources, applied in the field of water body detection, can solve problems such as the existence of calculation errors and the inability to completely eliminate the influence of uncertainty, and achieve the effect of eliminating uncertainty and easy application.

Inactive Publication Date: 2016-04-06
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

There are absolute calculation errors from sampling to analysis results. Although quality control is carried out in each process, the influence of uncertainty cannot be completely eliminated.

Method used

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  • Underground water type drinking water source pollution source analysis method
  • Underground water type drinking water source pollution source analysis method
  • Underground water type drinking water source pollution source analysis method

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[0059] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0060] Such as figure 1 Shown, the embodiment of the present invention a kind of groundwater type drinking water source ground pollution source analysis method, described groundwater type drinking water source ground pollution source analysis method comprises:

[0061]Step 101: Preprocessing the sampled data, the preprocessing includes at least one of missing value processing, uncertainty processing and data rationality analysis.

[0062] Step 102: Calculate the eigenvalues ​​and eigenvectors of the preprocessed sampled data to obtain an eigenvalue matrix and an eigenvector matrix.

[0063] Step 103: Using the eigenvalue matrix and eigenvector matrix to obtain a factor loading matrix and a factor score matrix.

[0064] Step 104: Perform non-negative co...

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Abstract

The invention provides an underground water type drinking water source pollution source analysis method, comprising preprocessing sample data; calculating feature values and feature vectors of the preprocessed sample data; solving a factor load matrix and a factor score matrix according to the feature value matrix and the feature vector matrix; carrying out nonnegative constraint rotation to the factor load matrix and the factor score matrix. The nonnegative constraint rotation is carried out to the factor loading matrix and the factor scoring matrix, negative values are prevented from appearing in the matrix decomposition result, the factor load and factor score are equipped with interpretability and clear physical significance; the pollution source and contribution are determined at the same time without knowing source profile in advance; the method is simple and convenient in operation; and measurement and detection uncertainty is effectively eliminated.

Description

technical field [0001] The invention relates to the technical field of water body detection, in particular to a method for analyzing pollution sources of groundwater drinking water sources. Background technique [0002] In recent years, as far as the country is concerned, the quality of groundwater in my country has declined significantly, and the proportion of water sources that are not suitable for drinking water has gradually increased. Different degrees of pollution risk, and the water quality is also affected by the evolution of groundwater movement. Therefore, it is considered to select conventional indicators of groundwater hydrochemical types that reflect the evolution of water quality to analyze the source of pollution. During the sampling and analysis process of groundwater quality indicators, measurement errors (systematic errors, random errors, , negligent error). There are absolute errors in the calculation from sampling to analysis results. Although quality co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 左锐张宏凯王金生滕彦国杨洁翟远征
Owner BEIJING NORMAL UNIVERSITY
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