Prevention of Sediment Recontamination by Improved BMPs to Remove Organic and Metal Contaminants from Stormwater Runoff
Abstract
This project developed design tools and advanced knowledge on the performance of black carbon (BC)-amended engineered media filters for preventing sediment recontamination while also benefiting water quality and possible beneficial use of stormwater runoff. Column experiments were conducted across various flow rates and flow conditions, e.g., 20-60 cm/hr, to assess tradeoffs in filter performance and design. The experimental results demonstrated that BC-amended engineered media filters successfully removed total suspended solids and a suite of dissolved metals and both hydrophobic and hydrophilic organic contaminants while maintaining adequate hydraulic conductivity. Filter performance tables were developed that account for media- and organic contaminant-specific removal and expected filter performance across a range of site and filter design parameters. Long-term modeling demonstrated that BC-amended engineered media filters may last for years, at which point the filter lifetime is expected to be governed by hydraulic performance and clogging. A technical design manual and TEMPEST filter design tool were created to assist regulators and practitioners in the design, construction, and estimation the life span of BC-amended engineered media filters to improve the treatment of stormwater runoff, reduce risks of sediment recontamination, and facilitate potential stormwater runoff beneficial use.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 19, 2022
- Accession Number
- AD1216352
Entities
People
- Christopher P Higgins
- J. C. Pritchard
- Kathleen Hawkins
- Richard G Luthy
- Scott D. Struck
- Yeo-myoung Cho
Organizations
- Colorado School of Mines
- Stanford University