Low-level Phosphorus Supplementation Enhances Biofiltration Hydraulic Performance and Treatment Efficiency

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Abstract:

The City of Arlington (City), Texas is faced with both operational and water quality complications at their John Kubala (JK) and Pierce-Burch (PB) water treatment facilities. While the ozone/biofiltration systems have performance well for many years, they experience occasional process upsets including shortened filter run times, underdrain, tastes and odors, and manganese breakthrough. This study, part of a Water Research Foundation Tailored Collaboration project, focused on evaluating methods for restoring and enhancing the performance of an existing full-scale ozone/biofiltration process through phosphorus supplementation. The findings from this work indicate that biofilter low-level phosphorus supplementation (<0.025 μg/L) can improve hydraulic performance and effluent water quality. Phosphorus supplementation sustainably decreased biofilter headloss by greater than 15% compared to a control. In addition, removals were enhanced for taste- and odor-causing 2-methylisoborneol (MIB) (between 30 and 70%), manganese (between 76 and 83%), and dissolved organic carbon (DOC) (between 50 and 100%).

Keywords: Biological Filtration; Dissolved Organic Carbon; Manganese; Tastes-and-Odors; Water Treatment

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864710798208467

Publication date: January 1, 2010

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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