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Effects of a Polyelectrolyte as a Filter Aid
Author(s) -
Garnell Michael A.
Publication year - 1963
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.1551-8833.1963.tb01055.x
Subject(s) - polyelectrolyte , filter (signal processing) , polymer , hydrolysis , viscosity , filter paper , carboxylate , chemistry , chromatography , drum , chemical engineering , materials science , polymer chemistry , composite material , organic chemistry , computer science , mechanical engineering , engineering , computer vision
This study discusses a supplementary treatment method or procedure of using synthetic polymers called polyelectrolytes to compensate for the pretreatment deficiencies of an old plant. The polymer is slightly anionic due to the hydrolysis of a small proportion of the amide groups to the carboxylate. The white granular material will dissolve in water with about one hour of mild agitation, forming a rather viscous solution. Concentrations in excess of one per cent become impractical because of the high viscosity produced. The procedure followed was to select two adjacent filters, one for dosing and the other for comparison purposes. A solution of the polyelectrolyte was diluted to a 0.05 per cent concentration in a 50‐gal drum equipped with a needle valve to regulate the rate of feed. The solution was fed directly to the applied water as it entered the filter. Study results are discussed in detail.