Media filter drain : modified design evaluation and existing design longevity evaluation.

Details

• Creators:
  Poor, Cara ; Haselbach, Liv
• Corporate Creators:
  Washington State University. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration ; Pacific Northwest Transportation Consortium
• Subject/TRT Terms:
  • Runoff
  • Water quality management
  • Best practices
  • Aggregate gradation
  • Copper
  • Zinc
  • Filter drains
  • Laboratory tests
• Publication/ Report Number:
  WA-RD 822.1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington
• Corporate Publisher:
  Washington (State). Dept. of Transportation. Research Office
• Abstract:
  The media filter drain (MFD), a stormwater water quality treatment best management practice, consists of media made up of ; aggregate, perlite, gypsum and dolomite in a trench located along roadway shoulders with gravel and vegetative pre-filtering ; facilities and optional underdrains. One of the many benefits of MFDs is the effective removal of dissolved zinc and copper ; from roadway runoff. However, the existing design includes use of an aggregate gradation that is no longer readily available ; (old design). A more readily available and economical aggregate gradation has a slightly lower percent of finer materials ; (new design). This project evaluates if the new design is as effective as the old design at enhanced dissolved zinc and copper ; treatment. ; Findings from laboratory research performed on columns filled with new media versus columns filled with old media ; indicate that the new media initially has similar removal efficiencies as the old media for large storm events. Accelerated ; aging of the new media indicates that removal efficiency for dissolved zinc and copper of the new media has not decreased ; after 15 years of simulated use.
  More +
• Format:
  PDF
• Funding:
  T4120-31
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27251/dot_27251_DS1.pdf
• File Type:
  [PDF - 1.05 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:853d88cc6daa7502c219fa0bdce6a69d133feb67692c3b49bd141319fd96b07d