Towards real-time detection of wastewater in surface waters using fluorescence spectroscopy  

作　　者：Ye Z.Yang Nicolas M.Peleato Raymond L.Legge Robert C.Andrews 

机构地区：[1]Department of Ciuil and Mineral Engineering,University of Toronto,35 St.George St.,Toronto,Ontario M5S 1A4,Canada [2]School of Engineering,Uniuersity of British Columbia Okanagan,1137 Alwmni Aue,Keloiuna,British Columbia V1V 1V7,Canada [3]Department of Chemical Engineering,University of Waterloo,200 University Ave.W,Waterloo,Ontario N2L 3G1,Canada

出　　处：《Journal of Environmental Sciences》2019年第12期195-202,共8页环境科学学报（英文版）

基　　金：funded by the Natural Sciences and Engineering Research Council of Canada (NSERC) Industrial Chair in Drinking Water Research at the University of Toronto

摘　　要：The presence of municipal wastewater at the intake of a major drinking water treatment facility located on Lake Ontario was examined using fluorescence data collected during a period of continuous monitoring.In addition,controlled mixing of lake water and wastewater sampled from a local treatment facility were conducted using a bench-scale fluorescence system to quantify observed changes in natural organic matter.Multivariate linear regression was applied to components derived from parallel factors analysis.The resulting mean absolute error for predicted wastewater level was 0.22%(V/V,wastewater/lake water),indicating that wastewater detection at below 1.0%(V/V)was possible.Analyses of sucralose,a wastewater indicator,were conducted for treated wastewater as well as surface water collected at two intake locations on Lake Ontario.Results suggested minimal wastewater contribution at the drinking water intake.A wastewater detection model using a moving baseline was developed and applied to continuous fluorescence data collected at one of the drinking water intakes,which agreed well with sucralose results.Furthermore,the simulated addition of 1.0%(V/V)of wastewater/wastewater was detectable in 89%of samples analyzed,demonstrating the utility of fluorescence-based wastewater monitoring.The presence of municipal wastewater at the intake of a major drinking water treatment facility located on Lake Ontario was examined using fluorescence data collected during a period of continuous monitoring. In addition, controlled mixing of lake water and wastewater sampled from a local treatment facility were conducted using a bench-scale fluorescence system to quantify observed changes in natural organic matter. Multivariate linear regression was applied to components derived from parallel factors analysis. The resulting mean absolute error for predicted wastewater level was 0.22%(V/V, wastewater/lake water), indicating that wastewater detection at below 1.0%(V/V) was possible. Analyses of sucralose, a wastewater indicator, were conducted for treated wastewater as well as surface water collected at two intake locations on Lake Ontario. Results suggested minimal wastewater contribution at the drinking water intake. A wastewater detection model using a moving baseline was developed and applied to continuous fluorescence data collected at one of the drinking water intakes, which agreed well with sucralose results. Furthermore,the simulated addition of 1.0%(V/V) of wastewater/wastewater was detectable in 89% of samples analyzed, demonstrating the utility of fluorescence-based wastewater monitoring.

关 键 词：Excitation emission matrices Parallel factors analysis Natural organic matter Source water monitoring Wastewater impact Water quality assessment 

分 类 号：X70[环境科学与工程—环境工程]