illustrates
the DOC of the water supplying the GAC filters after
treatment with the coagulation processes (GAC 1 and GAC 2
respectively), using either conventional treatment with alum
(Conv) or MIEX pre-treatment followed by coagulation (MIEX
Coag). MIEX Coag consistently achieved lower DOC levels
(ranging between 1.0 and 2.8 mg/L) than Conv (range
1.6–4.2 mg/L), over the period of the study. Consequently, the
DOC remaining after GAC filtration was also lower for the
MIEX Coag water (post GAC 2) than the Conv water (post GAC 1).
Other studies have also shown improved DOC removal using
MIEX compared with conventional treatment