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Surfactant Flushing 

Tersus optimizes surfactant systems for each site’s geochemistry and NAPL. The treatability study includes phase behavior studies to determine the optimum salinity for an ultra-low interfacial tension (IFT), which in turn enables NAPL mobilization by capillary displacement. The service also includes surfactant/groundwater and surfactant/soil interaction studies to assure that the surfactant system remains active at aquifer conditions.  Ultimately, column tests determine the optimum injection strategy and required volumes of post-surfactant recycled ground water injection.

Bioremediation, Chemical Oxidation and ZVI

Years of laboratory-to-field research have repeatedly demonstrated the strong correlation between laboratory bench scale treatability study results and achievement of remediation goals in the field. Laboratory treatability studies are a cost effective tool to simultaneously evaluate multiple performance variables, facilitate stakeholder "buy in," optimize performance prior to field implementation and ultimately reduce remediation costs.

SiREM, a company that Tersus represents, has a state-of-the-art treatability laboratory that is fully equipped with the instrumentation and staff to conduct high quality treatability studies to evaluate bioremediation, chemical oxidation and zero-valent iron based technologies to treat chlorinated solvents, petroleum hydrocarbons and many other recalcitrant chemicals.