A Prediction Method of Water Quality Parameters Based on Spectral Height Difference Features

A technology of water quality parameters and prediction methods, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of short monitoring period, long time-consuming, complicated operation, etc., and achieve the effect of avoiding influence

Active Publication Date: 2021-02-23
南京波思途智能科技股份有限公司
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Problems solved by technology

[0004] In recent years, China's quality-related indicators still use chemical methods. Although the measurement is relatively accurate, it takes a long time, requires many chemical reagents, complex operations, poor stability, and serious secondary pollution. Fast speed, it is an essential means for online monitoring

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  • A Prediction Method of Water Quality Parameters Based on Spectral Height Difference Features
  • A Prediction Method of Water Quality Parameters Based on Spectral Height Difference Features
  • A Prediction Method of Water Quality Parameters Based on Spectral Height Difference Features

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Embodiment Construction

[0041] This embodiment provides a method for predicting water quality parameters based on spectral height difference features, such as figure 1 shown, including:

[0042] (1) According to the spectral data and COD parameter value of the turbidity-free water sample, the correlation model F between the COD parameter value and the COD characteristic area is established in the characteristic band C . Specifically include:

[0043] (1.1) Obtain spectral data and COD parameter values ​​of multiple turbidity-free water samples; turbidity-free water samples are water samples whose turbidity measurement value is lower than the detection limit of the national standard determination method;

[0044] (1.2) Calculate the envelope area of ​​each turbidity-free water sample in the range of 250nm-310nm as the COD characteristic area S C ;like figure 2 shown;

[0045] (1.3) Using COD parameter values ​​and COD characteristic area S of multiple turbidity-free water samples C Fit the data...

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Abstract

The invention discloses a water quality parameter predicting method based on spectrum elevation difference characteristics. The water quality parameter predicting method comprises the steps: a correlation model FC between a COD parameter value and the COD characteristic area is built on a characteristic waveband through non-turbidity water sample data, a correlation model FT between a turbidity parameter value and the turbidity characteristic area is built on the characteristic waveband through common water sample data, and meanwhile, the turbidity characteristic is described through the trapezoidal shape; a correlation model Fh of an absorbancy elevation difference value H between the free bottom edge of a trapezoid and a specific visible light band is built; and during predicting, the area characteristic and the elevation difference characteristic of a to-be-predicted water sample on the characteristic waveband are extracted, and the turbidity and the COD parameter are calculated through the correlation models. Based on the actual water sample data and the characteristics thereof, influences of the factor of the turbidity on measuring and calculating of the water quality COD parameter can be avoided to the maximum extent, thus the water quality turbidity and the COD parameter value are measured and calculated accurately, and convenience is provided for water quality detecting.

Description

technical field [0001] The invention relates to the technical field of water quality monitoring, in particular to a method for predicting water quality parameters based on spectral height difference features. Background technique [0002] The problem of drinking water safety is directly related to the health of the general public. It is necessary to actively explore and adopt advanced and feasible monitoring technologies and methods, to grasp the changes in water quality of important drinking water sources in real time, and to strengthen water quality early warning and emergency response capabilities for sudden water pollution incidents. Urgent. [0003] The 2012-2014 project of China's national water resources monitoring capacity building (hereinafter referred to as the first phase project) has completed all construction contents in 2015. After the completion of the first phase of the project, it has played an important role in filling the lack of water resources monitorin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 吴绍锋蔡鑫张敏李东波
Owner 南京波思途智能科技股份有限公司
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