Record Display for the EPA National Library Catalog


Main Title Performance Testing of the DiPerna Sweeper.
Author Breslin, Michael K. ;
CORP Author Mason and Hanger-Silas Mason Co., Inc., Leonardo, NJ.;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1981
Report Number EPA-68-03-2642; EPA-600/2-81-229;
Stock Number PB82-109174
Additional Subjects Water pollution ; Oil pollution ; Skimmers ; Floating bodies ; Separators ; Oil skimmers ; DiPerna Sweeper ; Oil pollution control ; Oil pollution removal
Library Call Number Additional Info Location Last
NTIS  PB82-109174 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 44p
The DiPerna Sweeper, a partial-vacuum oil skimmer, was tested in a two-week test program conducted at the U.S. Environmental Test Tank (OHMSETT) in Leonardo, New Jersey. Forty-three oil recovery tests were run. The object of the program was to establish a range of best performance for the skimmer under various environmental conditions in light and heavy oils. The DiPerna Sweeper is a self-contained, floating oil skimmer that can operate in either a stationary or advancing mode. Its principle of operation is based upon drawing oil and water into a sealed container by creating a slight vacuum in the container. A floating weir serves as the inlet. The partial vacuum is created by pumping fluid from the sealed container. The container serves as an oil/water separator. Separate pumps draw water from the bottom of the vessel while others draw oil from the top. The device was able to recover over 75% of the oil presented to it in calm water at tow speed up to two knots. Performance decreased in waves. Modifications are suggested to improve such performance. The separator functioned well. In one case, the oil offloaded from the skimmer was 95% free of water.