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Research Reports |
| Title: | Pilot Scale Evaluation of Escherichia Coli Removal from Stormwater Runoff Using Steel Byproduct Filtration |
| Authors: | Guanghui Hua, Ankur Debnath, Siavash Ebrahimzadeh, and Christopher Schmit |
| Publication Date: | Apr 2025 |
| Report #: | MPC-25-578 |
| Project #: | MPC-690 |
| Type: | Research Report – MPC Publications |
Escherichia coli (E. coli) in stormwater is a significant environmental concern as it indicates potential contamination from fecal matter, raising risks for both human and aquatic health. Conventional stormwater best management practices are generally not effective at removing E. coli from stormwater runoff. Recycled steel byproducts, including steel chips and steel slag, have shown high capacity for E. coli removal from stormwater in laboratory and field scale studies. The objective of this study was to design and construct a pilot scale filter structure using steel byproduct media at a stormwater site in Sioux Falls, SD, and evaluate the filter performance for E. coli and phosphate removal under real stormwater treatment conditions. Five sampling events were conducted for the pilot scale filter from June to August 2024. The results showed that the pilot filter removed an average of 44.2% of the E. coli and an average of 53.8% of the phosphate in the stormwater. The results of this pilot study demonstrate that filtration using steel slag and steel chips media is an effective technology for removing E. coli and phosphate under real stormwater treatment conditions. This technology can be used as a cost-effective best management practice to control bacteria and phosphate contamination in urban stormwater systems.
Hua, Guanghui, Ankur Debnath, Siavash Ebrahimzadeh, and Christopher Schmit. Pilot Scale Evaluation of Escherichia Coli Removal from Stormwater Runoff Using Steel Byproduct Filtration, MPC-25-578. North Dakota State University - Upper Great Plains Transportation Institute, Fargo: Mountain-Plains Consortium, 2025.
Final Report