Record Display for the EPA National Library Catalog


Main Title Relationship between diameter and height for the design of a swirl concentrator as a combined sewer overflow regulator /
Author Sullivan, Richard H., ; Cohn, Morris M. ; Ure, James E. ; Parkinson, Fred E. ; Galiana., George
Other Authors
Author Title of a Work
Sullivan, Richard H.
Field, Richard,
CORP Author American Public Works Association, Chicago, Ill.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. Govt. Print Off.
Year Published 1974
Report Number EPA-670/2-74-039; EPA-68-03-0283
Stock Number PB-234 646
OCLC Number 01811464
Subjects Combined sewers ; Storm sewers
Additional Subjects Combined sewers ; Concentrators ; Flow rate ; Overflows ; Design ; Flow control ; Suspended sediments ; Spirals(Concentrators) ; Swirl concentrators ; Water pollution control ; Storm water runoff
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 670-2-74-039 Headquarters Library/Washington,DC 12/23/2014
ELBD ARCHIVE EPA 670-2-74-039 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 670-2-74-039 AWBERC Library/Cincinnati,OH 01/02/1998
NTIS  PB-234 646 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 44 pages : illustrations, diagrams, graphs ; 27 cm.
The report is a supplement to the report, 'The Swirl Concentrator as a Combined Sewer Overflow Regulator Facility' (PB-214 687). The work described by this report allows flexibility for the designer faced with structural, head or land area constraints by enabling interchange of basic heights and diameter dimensions. The 1972 studies established a suitable relationship between swirl chamber depth and diameter and their effect on the liquid flowfield and particle removal efficiencies. This report presents an account of supplemental studies of a hydraulic model of the swirl concentrator. The report translates the model study findings into a design basis that can be used for any rational flow rate in universal service for the treatment of combined sewer flows. It establishes the basic principle that variations in overflow weir height, or chamber depth, do not materially influence solids particle removals and that the most definitive design parameters are size of inlet sewer and swirl chamber diameter. It also provides design curves for various influent flow rates, covering chamber diameters and inlet sewer sizes which will produce settleable solids removal efficiencies of 70, 80 and 90 percent. It presents design details for flotable solids traps to retain these components, and for essential details of swirl chamber geometrics. Procedures are outlined on how the model study curves can be used in the design of prototype swirl concentrator units of various capacities and dimensional relationships.
"Contract no. 68-03-0283; Program element no. 1BB034." "A supplement to the Swirl concentrator as a combined sewer overflow facility, EPA-R2-72-008, September 1972." "July 1974." Report prepared by American Public Works Association, Alexander Potter & Associates, and LaSalle Hydraulic Laboratory, Ltd.