Stormwater Harvesting Using Retention and In-Line Pipes for Treatment Consistent with the New Statewide Stormwater Rule

Wet detention ponds collecting runoff from highways were examined as possible candidates for harvesting (reuse). Media mixes and methods to filter water for reuse were demonstrated. Filter media mixes categorized as Biosorption Activated Media (BAM) were laboratory tested for pollution removal and filtration rates. The media mixes with highest removal effectiveness were then demonstrated in pipes placed in operation at existing wet detention ponds. The use of a media mix was also demonstrated in a pilot operation to simulate retention areas in swales along highways. Down-flow and up-flow media filters were installed to improve water quality from wet detention ponds. Three of the filters were installed with provisions for removing debris and with mechanisms to backwash the filter media. A mobile pipe-in-pipe system was also demonstrated at a high rate of filtration. A disc filter operation was also demonstrated and water quality effectiveness documented. A swale filter system was demonstrated to document pollutant removal. The water quality of the percolate was improved with BAM. The removal was especially significant when new sod was used over the filter media as the new sod added nutrients to the water before entering the BAM. In a field location, a pipe was used to collect the filtrate from the BAM filter, and the water was of a quality sufficient for reuse. For a BAM augmented swale, calculations for removal and cost were presented. One potential obstacle to reuse from a highway wet detention pond was the ability to document possible effects on the surrounding groundwater. Thus, a computer program, called SHARP for Stormwater Harvesting and Assessment for Reduction of Pollution, was developed to help predict a safe yield, and an associated reuse rate that was constrained by adjacent groundwater levels. The use of the model was demonstrated at an Interstate wet detention pond in Miramar, Florida.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; Tables;
  • Pagination: 156p

Subject/Index Terms

Filing Info

  • Accession Number: 01483080
  • Record Type: Publication
  • Report/Paper Numbers: SMA 1660 7023
  • Contract Numbers: BDK78 977 - 02
  • Created Date: Jun 4 2013 11:08AM