||Three new techniques for floating pollutant spill control and recovery /
Bannister, W. W. ;
Donatelli, A. H. ;
Curby, W. A. ;
Kan, D. L. ;
Dalton, W. J.
||Lowell Univ., MA. ;Lahey Clinic Foundation, Burlington, MA. ;Massachusetts Maritime Academy, Buzzards Bay, MA. ;Datasonics, Inc., Cataumet, MA.;Municipal Environmental Research Lab., Cincinnati, OH.
|| U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory,
||EPA/600/2-83/115; EPA-R-806118; EPA-R-804628
Oil spills--Environmental aspects--United States. ;
Oil pollution of water.
Water pollution control ;
Fluorescent dyes ;
Materials recovery ;
Design criteria ;
Performance evaluation ;
Acoustic measuring instruments ;
Nitrogen organic compound ;
Hazardous materials spills ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||157 pages ; 28 cm
Hazardous material (HM) spills pose serious problems in terms of the very poor visibility often attending such situations. No operational capability exists at night or other periods of low visibility. However, time is very important in spill control and recovery work; in a few hours, areas cleared of an HM spill can be covered again as unharvested HM drifts back over the cleared track. This report discusses new techniques whereby (1) HM spills can be gelled quickly and completely to a solid consistency. The gel is of much greater visibility; does not readily flow or spread; is easily, quickly, and completely recovered by nets; has lower volatility and lower fire and toxicity hazards; does not permeate into porous materials; and is easily regenerated into the original HM and gelling components. (2) Cheap, nontoxic and efficient fluorescent agents can be applied in low (50-ppm) concentrations onto spills by conventional crop-dusting or spraying techniques. Where there is open water with no HM cover, the fluorescer is dissipated into the water, but is preferentially retained wherever there are HM patches. At night, illumination by UV light (modified mercury vapor street lights) can be beamed over the spill area. Vivid fluorescent illumination occurs only from the HM patches, providing night-time control and recovery capability. (3) Underwater sonic sensing provides excellent synergistic effects with the fluorescence technique.
Caption title. "November 1983." "EPA-600/2-83-115." Microfiche,