Record Display for the EPA National Library Catalog


Main Title Seattle tolt water supply mixed asbestiform removal study : Appendix D /
Author Kirmeyer, Gregory J.
CORP Author Municipal Environmental Research Laboratory, Cincinnati, Ohio.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available through the National Technical Information Service,
Year Published 1979
Report Number EPA/600/2-79/002; EPA/600/2-79/126; EPA-R-804422
Stock Number PB80-122609
OCLC Number 13600549
Subjects Water--Purification--Filtration ; Asbestos fibers ; Water treatment plants--Washington (State)--Seattle
Additional Subjects Water--Purification--Filtration ; Asbestos fibers ; Water treatment plants--Washington (State)--Seattl ; Filtration ; Pilot plants ; Flow charting ; Sampling ; Turbidity ; Flocculation ; Alums ; Calcium oxides ; Polymers ; Amphiboles ; Serpentine ; Graphs(Charts) ; Washington(State) ; Tolt Reservoir ; Seattle(Washington)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  QH541.R2 EPA-, 600/2, 79-126 Region 1 Library/Boston,MA 04/29/2016
EJBD  EPA 600-2-79-126 c.1 Headquarters Library/Washington,DC 05/27/2014
ELBD ARCHIVE EPA 600-2-79-126 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-2-79-126 AWBERC Library/Cincinnati,OH 02/06/2004
ESAD  EPA 600-2-79-126 Region 10 Library/Seattle,WA 11/07/1997
NTIS  PB80-122609 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 289 pages : illustrations ; 28 cm.
For 1 1/2 years the Seattle Water Department conducted direct filtration pilot plant studies at the Tolt Reservoir, obtaining data on techniques to remove amphibole and chrysotile asbestos from drinking water. Research showed that filtered water turbidity should be 0.1 ntu or lower in order to effectively remove fibers. Flocculation was necessary but sedimentation was not. Amphibole fibers are more readily removed than chrysotile, but both types could be reduced to below detectable limits or to not statistically significant counts by treatment with alum, lime and a filter aid. This appendix lists flow schematics tested during the pilot study and contains plots of headloss and turbidity vs. time for each filter run.
Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, under Grant no. 804422. Chiefly graphs.