Case study: in-situ surfactant enhanced DNAPL recovery pilot project-refinery site montreal canada

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Courtesy of Ivey International Inc.

Project Facts

  • Active chemical refinery (20 acre site)
  • Several DNAPL (chlorobenzene and dichlorobenzenes) and BTEX stored on-site
  • Multiple DNAPL and BTEX spill events reported over a site history extending back to the 1950's.
  • DNAPL and BTEX impacts to both the local soil and groundwater covering an 8 acre (+) area
  • Risk: potential risk for impacting the near-by municipal groundwater aquifer
  • Soil comprised of glacial till
  • Property owner tried several different in-situ ©mediation technologies over the past 3 years vithout success, at a considerable cost.
  • Ivey-Sol 106 pilot scale injection program between September 11-24, 2007
  • Pump and treatment system installed and operating vith 3 inch Hg vacuum
  • Pilot scale results demonstrated significant ability to mprove contaminant recovery and potential to clean jp the site in a rapid and cost effective manner.

Results

Mass Recovery (mg/day) = Flow Rate (L/min) x Concentration {mg/L} x Time (T) min/day
Over the course of the Pilot Scale Application the increase in DNAPL Mass Recovery was 549%, and BTEX Mass
was 303%, based on a real time calculation. Increases of >800% to > 1200% in individual DNAPL and BTEX contaminant paramete-t were

'The in-situ application of the Ivey-sol surfactant technology significantly increased the DWAPL and WEX mass form the impacted soil and groundwater on-site. We were very pleased by these results leading to our recommen scale site application as a rapid and cost effective method to achieve site clean up'

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