Premium
Surrogate Parameters for Monitoring Organic Matter and THM Precursors
Author(s) -
Edzwald James K.,
Becker William C.,
Wattier Kevin L.
Publication year - 1985
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1985.tb05521.x
Subject(s) - trihalomethane , dissolved organic carbon , raw water , chlorine , filtration (mathematics) , environmental science , total organic carbon , water treatment , environmental chemistry , raw material , organic matter , sampling (signal processing) , chemistry , environmental engineering , pulp and paper industry , statistics , mathematics , organic chemistry , engineering , filter (signal processing) , computer science , computer vision
UV absorbance at 254 nm is an excellent surrogate parameter for estimating the raw water concentrations of organic carbon (NPTOC—nonpurgeable total organic carbon) and THM precursors (TTHMFP—total trihalomethane formation potential) in the Grasse River (highly colored water) and the Glenmore Reservoir (protected, upland source). The raw water surrogate equations developed from the Grasse River data were tested successfully on other waters. Direct filtration pilot‐plant data demonstrated that UV can be used to monitor pilot‐plant performance for removals of NPTOC and THM precursors. For two plants studied, UV was an excellent predictor of plant performance for removals of NPTOC and THM precursors. Instantaneous TTHMs of the finished waters can be predicted from raw water UV, finished water pH, chlorine consumption, and temperature data. Particular attention should be given to the selection of sampling locations and to the sample‐handling conditions.