Premium
Developing a Sand‐GAC Filter to Achieve High‐Rate Biological Filtration
Author(s) -
Bablon Guy P.,
Ventresque Claire,
Aïm Roger Ben
Publication year - 1988
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.1551-8833.1988.tb03149.x
Subject(s) - filtration (mathematics) , filter (signal processing) , sand filter , activated carbon , dual layer , slow sand filter , pulp and paper industry , water treatment , layer (electronics) , chemical engineering , chemistry , environmental engineering , environmental science , materials science , chromatography , adsorption , composite material , computer science , mathematics , engineering , organic chemistry , wastewater , statistics , computer vision
A single dual‐layer filter, combining sand and granular activated carbon (GAC) and maintaining the mechanisms of biological treatment, was studied in France as a possible means of achieving high‐rate filtration. Initial results attest that the dual layer far outperforms a single‐layer sand unit, particularly with respect to the removal of suspended solids and ammonia. Using GAC for the top layer of the double filter ensures the removal of appreciable quantities of assimilable carbon and consequently has a positive effect on final chlorination and the palatability of the water.