SUVA

(L/mg∙m)

NOM composition

UV

absorbance

Coagulation

Potential TOC removal

<2

Mostly hydrophilic* and low molecular weight compounds

Low

NOM has little impact on coagulant injection (i.e., mainly non-coagulable NOM)

0% - 40%;

higher end for waters with high TOC

2-4

Mixture of hydrophilic and hydrophobic compounds; mixture of molecular weights

Medium

NOM impacts coagulant injection

40% - 60%;

higher end for waters with high TOC

>4

Mostly hydrophobic and high molecular weight compounds

High

NOM controls coagulant injection

60% - 80%;

higher end for waters with high TOC