||Filtration of Giardia cysts and other substances. Volume 3, Rapid rate filtration /
Al-Ani, M. Y. ;
McElroy, J. M. ;
Hibler, C. P. ;
Hendricks, D. W. ;
||Colorado State Univ., Fort Collins. Dept. of Civil Engineering.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
|| U.S. Environmental Protection Agency, Water Engineering Research Laboratory,
Drinking water--Purification. ;
Diatomaceous earth--United States. ;
Water treatment ;
Pilot plants ;
Hydraulic conductivity ;
Field tests ;
Coliform bacteria ;
Experimental design ;
Rapid rate filtration ;
Giardia lamblia ;
Water borne diseases ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xxiii, 277 leaves : illustrations, maps, charts ; 28 cm
The efficiency of rapid rate filtration for removal of Giardia lamblia cysts, standard plate count bacteria, total coliform bacteria, and turbidity was determined experimentally under a wide range of operating conditions. Percent removal was evaluated by means of a lab-scale pilot plant at temperatures of 4C and 18C, for low turbidity water, at hydraulic loading rates of 8 cm/min (2 gpm/sq ft), 24 cm/min (5 gpm/sq ft) and 33 cm/min (8 gpm/sq ft), for 'in-line' filtration, for three filter media, and using three chemicals. Testing was performed also using a 1.3 L/s (20 gpm) field-scale rapid rate filtration pilot plant. The range of testing was narrower and focused on ascertaining the findings at the lab-scale. The results showed that rapid rate filtration will effectively treat low turbidity water, and will remove Giardia cysts if proper chemical pretreatment is used.
"PB85-194645." "Cooperative agreement no. CR808650-02." "April 1985." "EPA/600/2-85/027."