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Soils Washing for Removal of Heavy Oil: Naval Air Engineering Center, Lakehurst, NJ

NASH, JAMES H., and RICHARD P. TRAVER,* Chapman, Inc., Freehold, NJ

With the recognition that large tracts of land are currently unusable as a result of either accidental spills or past industial practices (such as oil field development), the USEPA Office of Research and Development evaluated Previous HitsoilNext Hit washing as an alternative remedial technology for heavy oil contaminated Previous HitsoilNext Hit at a site located on the Naval Air Engineering Center (NAEC), Lakehurst, New Jersey. The researchers used a self-contained, 100-pound-per-hour Previous HitsoilNext Hit washer. Electrical, pneumatic, and fluid-pumping capabilities were provided by the trailer-mounted system at a remote No. 6 type oil spill site at the Navy base. Chloroform extracts of the contaminated sandy Previous HitsoilNext Hit recovered a 0.91 gram/milliliter, 950 centistoke viscosity, dark brown, non-PCB oil. By using a surfactant/solvent solution a ambient temperatures, contaminant levels on the Previous HitsoilNext Hit were reduced from 3.8% (38,000 milligram/kilogram--RCRA hazardous waste designation) to as low as 0.035% (350 milligram/kilogram) oil concentration. Supplemental laboratory evaluations extending the pilot field evaluations showed at elevated temperatures (120 degrees F) that residual oil contamination was less than 0.01% (100 milligram/kilogram). This final oil concentration in the treated Previous HitsoilTop would be defined as clean under the New Jersey Environmental Cleanup and Responsibilities Act (ECRA). A continuous belt press filter was used to recover the oil in a 47% solids cake that could be used as a secondary fuel feed to a waste boiler. The wash water solution was treated and recycled permitting economical operations.


AAPG Search and Discovery Article #91004 © 1991 AAPG Annual Convention Dallas, Texas, April 7-10, 1991 (2009)