Real-Time Estimation of Disinfection By-Products through Differential UV Absorbance

dc.contributor.authorStéphanie, Guilherme
dc.contributor.authorCaetano, Dorea
dc.date.accessioned2021-02-05T23:26:08Z
dc.date.available2021-02-05T23:26:08Z
dc.date.copyright2020en_US
dc.date.issued2020
dc.description.abstractE orts to control of unwanted disinfection by-products (DBPs) can be hindered by the relatively low-frequency data that is generated from DBP monitoring for regulatory purposes. Di erential UV absorbance (DUVA) has the potential to overcome some of these di culties as a relatively simple and low-cost technique for the estimation of regulated DBPs (i.e., trihalomethanes, THMs, and haloacetic acids, HAAs). DUVA is based on the principle that di erences in UV absorbance at specific wavelengths before and after chlorination can be correlated to DBP occurrence. This project sought to assess a lab-based protocol for the determination of a site-specific linear calibration curve for in situ real-time estimations of DBPs from DUVA measurement in water treatment plants (WTPs). A field spectrophotometer probe capable of high frequency scans within the UV light wavelength spectra with light paths of 100mmwas used. Models were developed to estimate DBP levels, at a scale representative of DUVA and DBP levels that actually occur in the WTP under study. Results showed that level of uncertainty on DBP levels estimation is relatively low (23% for HAAs and 32% for THMs). Although DBP estimations through DUVA are not of regulatory value, they can be used for real-time estimation of DBP levels to better inform operational decision making in water treatment plants and management of DBPs in distribution systems.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipFinancial support for this project was mainly provided by the National Science and Engineering Research Council (NSERC) through an Engage Grant.en_US
dc.identifier.citationStéphanie, G., & Caetano, D. (2020). Real-Time Estimation of Disinfection By- Products through Differential UV Absorbance. Water, 12(9), 1-12. https://doi.org/10.3390/w12092536.en_US
dc.identifier.urihttps://doi.org/10.3390/w12092536
dc.identifier.urihttp://hdl.handle.net/1828/12654
dc.language.isoenen_US
dc.publisherWateren_US
dc.subjectdifferential UV absorbanceen_US
dc.subjectdisinfection by-productsen_US
dc.subjectdrinking water monitoringen_US
dc.titleReal-Time Estimation of Disinfection By-Products through Differential UV Absorbanceen_US
dc.typeArticleen_US

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