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Optimizing the Placement of GAC Filtration Units
Author(s) -
Wiesner Mark R.,
Rook John J.,
Fiessinger François
Publication year - 1987
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.1551-8833.1987.tb02959.x
Subject(s) - filtration (mathematics) , turbidity , slow sand filter , adsorption , total organic carbon , activated carbon , chemistry , filter (signal processing) , water treatment , pulp and paper industry , environmental science , environmental engineering , chromatography , environmental chemistry , mathematics , organic chemistry , geology , engineering , oceanography , electrical engineering , statistics
The costs of granular activated carbon (GAC) filter‐adsorbers (second‐stage GAC filtration) were compared with those of the sand replacement option (first‐stage GAC filtration). Simulation models of total organic carbon (TOC) adsorption and particle removal were used to describe filter performance. First‐stage filtration was found to be the most cost‐effective treatment option when TOC removals of <;55 percent are sufficient. When treating waters with low TOC concentrations, using a large number of adsorbers in parallel, and regenerating the GAC off‐site, first‐stage filtration was found to be cost‐effective for TOC removals as high as 75 percent. Second‐stage GAC adsorbers should become more cost‐efficient for removal of low concentrations of TOC as conventional filters for turbidity removal are designed at higher filtration rates.