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Direct Filtration Using Polyelectrolyte Coagulants
Author(s) -
Letterman Raymond D.,
Sama Rami Reddy,
DiDomenico Edward J.
Publication year - 1979
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.1551-8833.1979.tb04363.x
Subject(s) - filtration (mathematics) , polyelectrolyte , turbidity , filter (signal processing) , chromatography , chemistry , water treatment , environmental engineering , environmental science , mathematics , engineering , polymer , geology , statistics , oceanography , organic chemistry , electrical engineering
Characteristic of a direct filtration system with dual media filters and catibnic polyelectrolytes as sole coagulants is the formation of a filtration zone that moves down through the bed. The rate of filtration advancement is determined by the pretreatment and filter operating conditions. A rate exists that tends to maximize water production per filter run and avoids turbidity breakthrough before the terminal head loss is reached.