ABSTRACT

A harbor oil spill removal-recovery system comprises four subsystems: containment, recovery, storage and transfer, and separation. Commercially available subsystems were analytically evaluated Based on the evaluation, six containment booms, ten skimmers, three pumps, two towable storage tanks, and three oil-water separators were tested in rivers, wave tanks, and on land. The highest test-rated subsystems were then assembled into two harbor oil spill removal-recovery systems: a confined-area system, and an open-area system. Both systems were then tested in a Naval harbor. The tests showed that essentially all the oil intentionally spilled in the harbor, with EPA approval, was recovered. Major findings were (1) none of the booms tested could contain oil when towed at 2 knots, (2) for 1-mm thick oil slicks, the maximum oil pickup rate was 55 gpm, obtained with a large advancing weir skimmer, (3) the towable tank concept was effective, and (4) neither a gravity nor coalescer oil-water separator operating alone could produce a water effluent with less than 10 ppm of oil; however, a gravity and a coalescer separator operating in series produced a water effluent of less than 10 ppm of oil

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