N3.02 Afrooz 2016 ReNUWIt Annual Meeting Poster
Abstract/Contents
- Abstract
- Urban stormwater runoff can be an alternative water source if managed (i.e., treated and recycled) properly. Improving pathogen and fecal indicator bacteria (FIB) removal efficiency of traditional biofilters by adding filter-media amendments is an active research area because of FIB’s profound public health significance. This research aims to provide with an improved understanding of the role of media amendments, media properties, and media aging (i.e., physicochemical or biological) on FIB removal performance of stormwater biofilters. Various geomedia, including compost, biochar, and iron filings, were added to plain sand columns; which were then challenged with E. coli, Enterococci, or MS2 laden synthetic stormwater to observe improvements in their FIB removal performances. Both iron filings and biochar amendments significantly improved biofilter’s pathogen removal efficiency. Long-term column experiments were performed to investigate the effect of aging on FIB removal capacity of those geomedia: which revealed biochar to be the most promising media for long-term field-applications. Experimental results suggest although physical weathering and biofilm growth affect log removal of E. coli, biochar columns (biochar:sand=3:7, by volume) are capable of achieving 1-2 log removal depending on the biochar feedstock, pyrolysis temperature, and particle size. Column experiments were conducted in the presence of natural organic matter to simulate chemistry of authentic stormwater. Findings from this research will be utilized to inform the design of field-scale biofilters for better and consistent performance in removing FIB from urban stormwater runoff.
Description
| Type of resource | other |
|---|---|
| Date created | May 2016 |
Creators/Contributors
| Author | Boehm, Alexandria |
|---|---|
| Author | Torkelson, Andrew |
| Author | McCray, John |
| Author | Nelson, Kara |
| Author | Afrooz, Nabiul |
| Author | Maxwell, Reed |
| Author | Mohanty, Sanjay |
Subjects
| Subject | Re-inventing the Nation’s Urban Water Infrastructure |
|---|---|
| Subject | ReNUWIt |
| Subject | N3.02 |
| Subject | Natural Water Infrastructure Systems |
| Subject | Distributed stormwater treatment unit processes |
| Subject | California |
| Subject | bacteria |
| Subject | bed filter |
| Subject | biofilm |
| Subject | biofilter |
| Subject | bioretention media |
| Subject | colloid mobilization |
| Subject | escherichia coli removal |
| Subject | fecal indicator bacteria |
| Subject | filtration |
| Subject | heterogeneous porous |
| Subject | media intermittent flow |
| Subject | natural organic matter |
| Subject | nitrogen removal |
| Subject | low impact development |
| Subject | phosphorus |
| Subject | pollutant removal |
| Subject | porous media |
| Subject | pseudomonas aeruginosa |
| Subject | retention |
| Subject | stormwater |
| Subject | stormwater control measures (scms) |
| Subject | transport |
| Subject | viruses |
| Subject | water |
Bibliographic information
| Related Publication | Afrooz, A. R. M. N., & Boehm, A. B. (2016). Escherichia coli Removal in Biochar-Modified Biofilters: Effects of Biofilm. Plos One, 11(12). http://doi.org/10.1371/journal.pone.0167489 |
|---|---|
| Related Publication | Afrooz, A. R. M. N., & Boehm, A. B. (2017). Effects of submerged zone, media aging, and antecedent dry period on the performance of biochar-amended biofilters in removing fecal indicators and nutrients from natural stormwater. Ecological Engineering, 102, 320-330. http://doi.org/10.1016/j.ecoleng.2017.02.053 |
| Related Publication | Afrooz, A. R. M. N., Pitol, A. K., Kitt, D., & Boehm, A. B. (2018). Role of microbial cell properties on bacterial pathogen and coliphage removal in biochar-modified stormwater biofilters. Environmental Science-Water Research & Technology, 4(12), 2160-2169. http://doi.org/10.1039/c8ew00297e |
| Location | https://purl.stanford.edu/vq047cb3590 |
Access conditions
- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
- License
- This work is licensed under an Open Data Commons Attribution License v1.0.
Preferred citation
- Preferred Citation
- Boehm, Alexandria and Torkelson, Andrew and McCray, John and Nelson, Kara and Afrooz, Nabiul and Maxwell, Reed and Mohanty, Sanjay. (2016). N3.02 Afrooz 2016 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/vq047cb3590
Collection
Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)
View other items in this collection in SearchWorksContact information
- Contact
- aboehm@stanford.edu
Also listed in
Loading usage metrics...