Method and device for real-time online monitoring of sewage treatment plant

Abstract

The invention provides a method and device for real-time online monitoring of a sewage treatment plant. Dual-mode detection of an ultraviolet spectrum method and a three-dimensional fluorescent spectrum method is involved. The ultraviolet spectrum method involves a multi-wavelength ultraviolet irradiation device, a water sample container and an absorption spectrum, the multi-wavelength ultravioletirradiation device can emit ultraviolet light of various wavelengths, the water sample container has a certain thickness b, and the absorption spectrum includes feature points and feature vectors ofthe full-wave-band absorption spectrum; the three-dimensional fluorescent spectrum method involves a multi-wavelength emission device, a water sample container and a fluorescence emission spectrum, the multi-wavelength emission device can constantly change the excitation wavelength, the fluorescence emission spectrum comprises emission spectra under different emission wavelengths, the ultravioletspectra and the fluorescent spectra have the high complementarity and can be combined for monitoring the sewage water quality change condition, and analytic measurement of various parameters of NO2, NO3, COD, DOC, BOD, TOC, TSS and the like can be performed.

Description

technical field [0001] The invention belongs to the field of environmental engineering, in particular to a method and device for real-time on-line monitoring of sewage treatment plants. Background technique [0002] Online monitoring of water quality is an important foundation and effective means to achieve water environment protection, drinking water safety assurance, sewage treatment and pollutant discharge control, and water resource management. In recent years, with the gradual increase in the real-time and monitoring frequency requirements for water quality monitoring, traditional laboratory manual analysis has been difficult to meet the monitoring needs, so that online monitoring has received widespread attention and rapid development, and more and more online monitoring instruments have been used Promote and apply to various fields of water quality monitoring. At present, the commonly used online water quality monitoring methods mainly include chemical methods, chrom...

AI Technical Summary

Problems solved by technology

Peak picking as an online real-time tool is a viable analytical technique, however, its applicability may be limited due to peak shifts, possible overlap and interference between peaks

Furthermore, when two excitation wavelengths are observed at a fluorescent component, it can lead to misleading observations by associating each peak with a specific fluorophore