Considerations in selecting a (bio)filtration media to optimize lifespan and pollutant removal

Shirley E. Clark, Robert Pitt

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

3 Scopus citations

Abstract

Many research studies have been published regarding the treatment efficiency of bioretention for a wide variety of pollutants found in urban stormwater runoff. However, limited information is available on predicting the treatability of these pollutants between media and between sites. Predicting the treatment ability of bioretention/infiltration/filtration media is a function of both soil and water chemistry. This paper begins that meta-analysis of pollutant removal as a function of chemistry. The results presented here are from a single project evaluating candidate bioretention media to meet numeric effluent limits and are based on a limited number of samples. As additional data becomes available in the spring, the analysis will be expanded. The preliminary results indicate that the media that appear to have the best removal ability for a wide range of metallic pollutants are those that have both cation exchange ability and comparatively high organic matter content. For metals, this also may require a lower media pH because of the generally increased solubility of metals at lower pHs. Lower pHs and higher organic matter contents, however, must be evaluated further if phosphorus removal is also desired since phosphorus is removed better at higher pHs and lower organic matter contents. These results also highlight the trade-offs in pollutant capture versus export when using ion-exchange media.

Original languageEnglish (US)
Title of host publicationLow Impact Development 2010
Subtitle of host publicationRedefining Water in the City - Proceedings of the 2010 International Low Impact Development Conference
Pages63-73
Number of pages11
DOIs
StatePublished - Jul 30 2010
Event2010 International Low Impact Development Conference - Redefining Water in the City - San Francisco, CA, United States
Duration: Apr 11 2010Apr 14 2010

Publication series

NameLow Impact Development 2010: Redefining Water in the City - Proceedings of the 2010 International Low Impact Development Conference

Other

Other2010 International Low Impact Development Conference - Redefining Water in the City
CountryUnited States
CitySan Francisco, CA
Period4/11/104/14/10

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

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    Clark, S. E., & Pitt, R. (2010). Considerations in selecting a (bio)filtration media to optimize lifespan and pollutant removal. In Low Impact Development 2010: Redefining Water in the City - Proceedings of the 2010 International Low Impact Development Conference (pp. 63-73). (Low Impact Development 2010: Redefining Water in the City - Proceedings of the 2010 International Low Impact Development Conference). https://doi.org/10.1061/41099(367)7