Effects of flocculation on direct filtration performance

Paul Westerhoff, John E. Tobiason

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish (US)
Title of host publicationProceedings - AWWA Annual Conference
Place of PublicationDenver, CO, United States
PublisherPubl by American Water Works Assoc
Pages683-696
Number of pages14
ISBN (Print)0898675901
StatePublished - 1991
Externally publishedYes
EventProceedings of the 1991 AWWA Annual Conference - Philadelphia, PA, USA
Duration: Jun 23 1991Jun 27 1991

Other

OtherProceedings of the 1991 AWWA Annual Conference
CityPhiladelphia, PA, USA
Period6/23/916/27/91

Fingerprint

Flocculation
Coagulation
Surface waters
Disinfection
Water treatment
Viruses
Microorganisms
Particle size
Health

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Westerhoff, P., & Tobiason, J. E. (1991). Effects of flocculation on direct filtration performance. In Proceedings - AWWA Annual Conference (pp. 683-696). Denver, CO, United States: Publ by American Water Works Assoc.

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 proceedingConference contribution

Westerhoff, P & Tobiason, JE 1991, Effects of flocculation on direct filtration performance. in Proceedings - AWWA Annual Conference. Publ by American Water Works Assoc, Denver, CO, United States, pp. 683-696, Proceedings of the 1991 AWWA Annual Conference, Philadelphia, PA, USA, 6/23/91.
Westerhoff P, Tobiason JE. Effects of flocculation on direct filtration performance. In Proceedings - AWWA Annual Conference. Denver, CO, United States: Publ by American Water Works Assoc. 1991. p. 683-696
Westerhoff, Paul ; Tobiason, John E. / Effects of flocculation on direct filtration performance. Proceedings - AWWA Annual Conference. Denver, CO, United States : Publ by American Water Works Assoc, 1991. pp. 683-696
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