Coagulation and adsorption of humic substances: An analysis of surrogate parameters for predicting effects on trihalomethane formation potential

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Abstract
Alum coagulation and activated carbon adsorption are effective water treatment processes for removing trihalomethane precursors. Nonpurgeable organic carbon (NPOC), UV absorbance, and fluorescence can serve as surrogate parameters for predicting the trihalomethane formation potential (THMFP) of a water source from its untreated state through various degrees of treataent by these processes. Multiplicative parameters such as the product of UV absorbance and NPOC can also function as effective surrogates.