| Main Title |
Seattle Tolt Water Supply Mixed Asbestiform Removal Study. Appendices B and C. |
| Author |
Kirmeyer, Gregory J. ;
|
| CORP Author |
Seattle Dept. of Water, WA. Water Quality Div.;Municipal Environmental Research Lab., Cincinnati, OH. |
| Year Published |
1979 |
| Report Number |
EPA-R-804422; EPA-600/2-79-153; |
| Stock Number |
PB80-166713 |
| Additional Subjects |
Asbestos ;
Water treatment ;
Filtration ;
Serpentine ;
Amphiboles ;
Pilot plants ;
Turbidity ;
Flocculating ;
Fibers ;
Alums ;
Coagulation ;
Fluid filters ;
Mixers ;
Backwashing ;
Potable water ;
Sludge ;
Cost estimates ;
Settling ;
Washington(State) ;
Tolt Reservoir ;
Seattle(Washington)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB80-166713 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
161p |
| Abstract |
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 or alum, cationic polymer and a filter aid; or cationic polymer and a filter aid. Asbestos fiber content of filtered water increased sharply when filtered water turbidity rose above 0.10 ntu. Appendix B contains equipment photographs; data on operating conditions, water quality, fiber counting, and filter media; turbid water test data; results of sludge studies; and documentation of cost estimation data. Appendix C has details on conditions for each filter run. |
| Supplementary Notes |
See also PB80-117591 and PB80-122609. |
| NTIS Title Notes |
Final rept. May 76-Nov 78. |
| PUB Date Free Form |
Dec 79 |
| Category Codes |
13B; 50B |
| NTIS Prices |
PC A08/MF A01 |
| Primary Description |
600/14 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323777347 |
| Origin |
NTIS |
| Type |
CAT |
