Record Display for the EPA National Library Catalog


Main Title Removal of algae in natural bodies of water /
Author Oswald, William J.
CORP Author California Univ., Berkeley. Sanitary Engineering Research Lab.;Environmental Research Lab., Corvallis, Oreg.
Publisher Sanitary Engineering Research Laboratory, College of Engineering, University of California,
Year Published 1976
Report Number EPA/600/3-76/059; EPA-802670
Stock Number PB-253 086
Subjects Algae--Control
Additional Subjects Algae ; Harvesting ; Pest control ; Clear Lake ; Cyanophyta ; Skimming ; Nutrients ; Water quality ; Surface waters ; Benefit cost analysis ; Performance tests ; Agricultural machinery ; Removal ; California
Library Call Number Additional Info Location Last
NTIS  PB-253 086 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation viii, 140 pages : illustrations ; 28 cm.
Floating blue-green algae predominate in Clear Lake during most of the algal growing season. They are subject to concentration by gentle winds which can drive intense concentrations of algae into relatively small areas. Algal concentrations in these scums may vary between 1000 mg and 20,000 mg per liter surface water (1-5 cm deep). Because of this natural flotation and wind-induced concentration only about 2 percent of Clear Lake's surface need be skimmed throughout the algal growing season to decrease the average level of floating algae in the lake. The annual cost of building and operating a single skimming station would be about $50,000 to $60,000. New information on algal scum characteristics have been incorporated into the design of a third pickup unit (The U.C. Surface Skimmer) which is now being constructed. Testing and evaluation of the unit will be conducted in Clear Lake. The economic analysis presented is contingent upon the successful functioning of this unit.
Includes bibliographical references (pages 139-140). Microfiche.