Proper selection of appropriate treatment processes for surface water supplies is a function of raw water quality including particles and natural organic matter (NOM). This paper presents an updated foundation for process selection based on routinely measured parameters of particles (turbidity) and organic matter content (UV254, color and TOC). The distinction between mineral and non-mineral turbidity is addressed. Processes considered include direct filtration, conventional sedimentation, dissolved air flotation and contact clarification. The results of this paper are based on a survey of currently operating facilities, pilot studies, theory and North American experience. Recommended guidelines for process selection as a function of raw water TOC, color and turbidity are presented. Figures to aid process selection based on source water quality are provided.
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Research Article|
September 01 2009
Treatment selection guidelines for particle and NOM removal
M. T. Valade
;
1
Hazen and Sawyer, P.C., 24 Federal Street, Suite 302, Boston MA, 02110, USA
Tel.: +1 617 574 4747 Fax: +1 617 574 4799; E-mail: mvalade@hazenandsawyer.com
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W. C. Becker
;
W. C. Becker
2
Hazen and Sawyer, P.C., 498 Seventh Avenue, 11th Floor, New York NY, 10018, USA
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J. K. Edzwald
J. K. Edzwald
3
Department of Civil and Environmental Engineering, University of Massachusetts. Amherst MA, 01003, USA
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Journal of Water Supply: Research and Technology-Aqua (2009) 58 (6): 424-432.
Article history
Received:
December 23 2008
Accepted:
June 26 2009
Citation
M. T. Valade, W. C. Becker, J. K. Edzwald; Treatment selection guidelines for particle and NOM removal. Journal of Water Supply: Research and Technology-Aqua 1 September 2009; 58 (6): 424–432. doi: https://doi.org/10.2166/aqua.2009.201
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Citation
M. T. Valade, W. C. Becker, J. K. Edzwald; Treatment selection guidelines for particle and NOM removal. Journal of Water Supply: Research and Technology-Aqua 1 September 2009; 58 (6): 424–432. doi: https://doi.org/10.2166/aqua.2009.201
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