ARCO Wellsville, USA

ARCO Wellsville, USA Naturally Wallace Consulting

This wetland was built for groundwater remediation on the site of a former oil refinery at the State University of New York's Wellsville campus 2008

Passive wetland system designed as a long-term solution to treat legacy groundwater contaminants, including petroleum hydrocarbons, metals and chlorinated solvents. No electricity is used other than to pump groundwater from the recovery wells to the treatment wetlands.

The treatment system consists of a cascade aerator, sedimentation pond, parallel surface flow wetlands, parallel vertical flow oxic limestone drains, and sand drying beds for iron precipitate dewatering. It removes over 99% of aniline and nitrobenzene from the groundwater, without the use of added chemicals. The design incorporates a trails path, restoration of the adjacent river swale, and a 20-acre site plan using entirely native elements (tress, shrubs, wildflowers, grasses and wetland plants). 


Additional Info

  • In operation since: 2008
  • Type of wastewater treated: Industrial: other
  • Type of wastewater (other): oil refinery contamination
  • Hydraulic load: 1060 m³/day
  • Location: Wellsville, New York, USA
  • Client: Atlantic Richfield (ARCO)
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