Method for rapidly identifying and determining black and odor of urban water body based on multi-source spectral characteristics

Abstract

The invention discloses a method for rapidly identifying and determining the black and odor of an urban water body based on multi-source spectral characteristics. A three-dimensional fluorescence spectrum is used for analyzing concentrations of humic acid, albumin and oil black and odor precursors in the water body, and a UV-visible absorption spectrum is utilized for analyzing and obtaining waterquality parameters of turbidity, chroma and nitrate black and odor and other related parameters, and water quality comprehensive indexes of COD, BOD and TOC are obtained by using fluorescence spectrum and absorption spectrum fusion inversion; combining dissolved oxygen and water temperature parameters, a water body black and odor grade measurement algorithm model is established based on data driving through testing and training of different types of water bodies in a plurality of cities, and the rapid identification and determination of the black odor grade of the water body is achieved. Themethod solves the problems of 'single monitoring index, organic index missing and ammonia nitrogen sampling and off-line measuring' in a water body black and odor monitoring method specified in Guideto Regulation of Urban Black and Odor Water Bodies, has the advantages of no reagent, no need of sample pretreatment, rapid measurement and the like, and is a rapid and effective method for measuringthe black and odor of water bodies.

Description

technical field [0001] The invention relates to the technical fields of resources and environment and urban environmental protection, in particular to a method for quickly identifying and measuring black and odorous urban water bodies based on multi-source spectral features. Background technique [0002] Black and odorous water refers to water that presents an unpleasant color and / or emits an unpleasant odor. Black and odorous water is an extreme phenomenon of organic pollution. When a large amount of organic pollutants enter the water, the biochemical action of aerobic microorganisms consumes a large amount of oxygen, resulting in the lack of oxygen in the water, the proliferation of anaerobic bacteria, and the anaerobic degradation of organic matter into ammonia nitrogen, humus, sulfur Hydrogen, methane and mercaptans, etc., cause the water to turn black and smelly. Due to the different components of different black and odorous water bodies and the complex causes, there a...

AI Technical Summary

Problems solved by technology

Remote sensing methods identify black and odorous water bodies based on water chromaticity indicators, and can present the spatial distribution characteristics of black and odorous water bodies. They have the characteristics of dynamic, rapid, and large-scale monitoring. Smelly", the limitations are also obvious

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