Abstract
The Surface Water Treatment Rule (SWTR) will require filtration of most surface waters, as the EPA recognizes filtration and disinfection as methods to meet specified goals for the removal and/or inactivation of a variety of microorganisms of health concern, including viruses and Giardia cysts. These biological 'particles' vary greatly in size (i.e., 0.05 μm versus 10 μm), as well as other characteristics. This, and the fact that many previously unfiltered supplies of high quality may be treated by direct (coagulation, flocculation, filtration) or contact (coagulation, filtration) filtration, suggests the need for an improved understanding of the role of suspended particle size and flocculation in filtration performance. The objective of this study was to investigate the effects of chemical addition and flocculation duration on filtration performance as measured by particle removal and head loss development.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings - AWWA Annual Conference |
| Place of Publication | Denver, CO, United States |
| Publisher | Publ by American Water Works Assoc |
| Pages | 683-696 |
| Number of pages | 14 |
| ISBN (Print) | 0898675901 |
| State | Published - 1991 |
| Externally published | Yes |
| Event | Proceedings of the 1991 AWWA Annual Conference - Philadelphia, PA, USA Duration: Jun 23 1991 → Jun 27 1991 |
Other
| Other | Proceedings of the 1991 AWWA Annual Conference |
|---|---|
| City | Philadelphia, PA, USA |
| Period | 6/23/91 → 6/27/91 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Effects of flocculation on direct filtration performance. / Westerhoff, Paul; Tobiason, John E.
Proceedings - AWWA Annual Conference. Denver, CO, United States : Publ by American Water Works Assoc, 1991. p. 683-696.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effects of flocculation on direct filtration performance
AU - Westerhoff, Paul
AU - Tobiason, John E.
PY - 1991
Y1 - 1991
N2 - The Surface Water Treatment Rule (SWTR) will require filtration of most surface waters, as the EPA recognizes filtration and disinfection as methods to meet specified goals for the removal and/or inactivation of a variety of microorganisms of health concern, including viruses and Giardia cysts. These biological 'particles' vary greatly in size (i.e., 0.05 μm versus 10 μm), as well as other characteristics. This, and the fact that many previously unfiltered supplies of high quality may be treated by direct (coagulation, flocculation, filtration) or contact (coagulation, filtration) filtration, suggests the need for an improved understanding of the role of suspended particle size and flocculation in filtration performance. The objective of this study was to investigate the effects of chemical addition and flocculation duration on filtration performance as measured by particle removal and head loss development.
AB - The Surface Water Treatment Rule (SWTR) will require filtration of most surface waters, as the EPA recognizes filtration and disinfection as methods to meet specified goals for the removal and/or inactivation of a variety of microorganisms of health concern, including viruses and Giardia cysts. These biological 'particles' vary greatly in size (i.e., 0.05 μm versus 10 μm), as well as other characteristics. This, and the fact that many previously unfiltered supplies of high quality may be treated by direct (coagulation, flocculation, filtration) or contact (coagulation, filtration) filtration, suggests the need for an improved understanding of the role of suspended particle size and flocculation in filtration performance. The objective of this study was to investigate the effects of chemical addition and flocculation duration on filtration performance as measured by particle removal and head loss development.
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UR - http://www.scopus.com/inward/citedby.url?scp=0026375092&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0026375092
SN - 0898675901
SP - 683
EP - 696
BT - Proceedings - AWWA Annual Conference
PB - Publ by American Water Works Assoc
CY - Denver, CO, United States
ER -