Detection method in outliers of spectrometry UV-Visible databases: preliminary phase for calibration models applied to regressive real-time monitoring of water quality

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Estimate reliably and through technologies in situ the time evolution of quality parameters allow monitor the status of the proceedings of a Waste Water Treatment Plant (WWTP), promoting the understanding and control over them, especially in the detection of disturbances. However, these technologies have problems related to proper operation and maintenance, which reduce the potential for its application. Then the presence of outliers in longitudinal series is an important phase in the data analysis, as a preliminary to calibrate regression models. Therefore, this article presents a method for detecting outliers, whose application is expanding not only the particular case of the spectrometry UV-Visible data of influent and effluent of the WWTP-San Fernando in Colombia if not to different databases number. To validate the results for detection of outliers, were formed subsets of calibration and validation without outliers data, which evaluated the fit between the estimated concentrations using regression models of partial least squares (PLS) and laboratory data, finding improvements in the predictability of the influent and effluent concentrations using absorbance spectra.
Original languageSpanish
Title of host publicationConference Latin American and Caribbean Consortium of Engineering Institutions. Cancum, Mexico
Pages1-10
Number of pages10
StatePublished - 2013

Cite this