Water quality multi-index detection method on basis of ultraviolet-visible absorption spectrum

A technology of absorption spectrum and detection method, applied in the field of multi-index detection of water quality based on UV-Vis absorption spectrum, can solve the problems of low accuracy of measurement results, lack of analytical methods, poor stability, etc.

Inactive Publication Date: 2014-09-10
北京金达清创环境科技有限公司 +1
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Problems solved by technology

However, due to the lack of analytical methods for UV-Vis absorption spectra, this method has not been widely used.
Although there are researches and applications on absorbance measurement based on ultraviolet-visible absorption spectrum, the absorbance of one to two abso

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  • Water quality multi-index detection method on basis of ultraviolet-visible absorption spectrum
  • Water quality multi-index detection method on basis of ultraviolet-visible absorption spectrum
  • Water quality multi-index detection method on basis of ultraviolet-visible absorption spectrum

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The present invention comprises the following steps:

[0030] 1) Establish a water quality algorithm model that includes each water quality index

[0031] The water quality algorithm model is an algorithm based on the correlation between the ultraviolet-visible absorption spectrum and various water quality indicators. Among them, various water quality indicators include but are not limited to COD, TOC, DOC, BOD, nitrate nitrogen, nitrite nitrogen, turbidity / suspended solids, chromaticity, UV254, benzene series, hydrocarbons, hydrogen sulfide, residual chlorine , ozone, etc.

[0032] The water quality algorithm model is established through the following steps:

[0033] ① Collect actual water samples from various sources, types, and pollution indicators including the above-mentioned water quality indicators. On the one hand, conventio...

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Abstract

The invention relates to a water quality multi-index detection method on the basis of an ultraviolet-visible absorption spectrum. The method comprises the following steps: (1) establishing a water quality algorithm model comprising each water quality index; (2) measuring to obtain the ultraviolet-visible absorption spectrum of the to-be-detected water; (3) calculating to obtain a primary calculation value of each water quality index in the to-be-detected water according to the water quality algorithm model and the ultraviolet-visible absorption spectrum of the to-be-detected water; (4) locally correcting the primary calculation value of each water quality index in the to-be-detected water to obtain a detection result corresponding to each water quality index; and (5) comparing the obtained detection result corresponding to each water quality index and relevant water quality standard of each water quality index, judging whether the to-be-detected water quality exceeds the standard or not and issuing an alarm. By measuring the ultraviolet-visible full-wavelength absorption spectrum of the detected water, combining with the water quality algorithm model and correction parameters, each water quality index in the water can be synchronously calculated. The method can be widely suitable for monitoring and alarming for various kinds of surface water, various kinds of sewage, drinking water, and for control of sewage and water supply treatment processes.

Description

technical field [0001] The invention relates to a water quality standard detection method, in particular to a water quality multi-index detection method based on ultraviolet-visible absorption spectrum. Background technique [0002] Water quality analysis is to measure and evaluate the quality status and change law of water resources, and provide scientific basis for the development, utilization, management and protection of water resources by the country and governments at all levels. The quality of water resources is usually described by water quality indicators, commonly used water quality indicators include COD (Chemical Oxygen Demand, chemical oxygen demand), TOC (Total Organic Carbon, total organic carbon), DOC (Dissolved Organic Carbon, dissolved organic carbon) , BOD (Biochemical Oxygen Demand, biochemical oxygen demand), nitrate nitrogen, nitrite nitrogen, turbidity / suspended solids, chromaticity (color and true color), UV254 (or called SAC254, that is, the waveleng...

Claims

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Application Information

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IPC IPC(8): G01N21/33
Inventor 盛建武宋保栋杨海洋施汉昌
Owner 北京金达清创环境科技有限公司
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