Record Display for the EPA National Library Catalog


Main Title The coupled trickling filter-activated sludge process : design and performance /
Author Stenquist, Richard J., ; Parker, Denny S. ; Loftin, William E.
Other Authors
Author Title of a Work
Parker, Denny S.,
CORP Author Brown and Caldwell, Walnut Creek, CA.;Municipal Environmental Research Lab., Cincinnati, OH. Wastewater Research Div.
Publisher Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory,
Year Published 1978
Report Number EPA-600/2-78-116; EPA-68-03-2175
Stock Number PB-287 555
OCLC Number 04343045
ISBN pbk.
Subjects Nitrification ; Sewage--Purification--Activated sludge process
Additional Subjects Trickling filtration ; Activated sludge ; Sewage treatment ; Nitrification ; Design criteria ; Performance evaluation ; Cost analysis ; Capitalized costs ; Concentration(Composition) ; Chlorination ; Coliform bacteria ; California ; Water reclamation ; Livermore(California)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-78-116 Headquarters Library/Washington,DC 10/27/2014
ELBD ARCHIVE EPA 600-2-78-116 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-2-78-116 AWBERC Library/Cincinnati,OH 12/06/2022
ESAD  EPA 600-2-78-116 Region 10 Library/Seattle,WA 07/15/2005
NTIS  PB-287 555 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 236 pages : illustrations, figures, tables ; 28 cm
A case history report was prepared on the upgrading of the Livermore, California, Water Reclamation Plant from a conventional trickling filter plant with tertiary oxidation ponds to a coupled trickling filter-activated sludge plant producing a nitrified effluent low in BOD5, suspended solids, and coliform organisms. The report covers planning, design, construction, startup, and operation and performance of the upgraded Livermore plant. Capital costs and operation and maintenance expenses are also given. Data and information from Livermore were used in conjunction with data from other coupled trickling filter-activated sludge plants to develop general design considerations for carrying out similar upgradings elsewhere. Over 7 yr of records from Livermore show that the coupled trickling filter-activated sludge process is extremely stable and reliable. Effluent BOD5 and suspended solids concentrations of 10 to 20 mg/l can be obtained, along with ammonia nitrogen concentrations less than 1 mg/l. Monthly median total coliform concentrations of 2.1 MPN/100 ml were consistently achieved at Livermore using high chlorine dosages and a chlorine contact tank with good hydraulic characteristics. The coupled trickling filter-activated sludge process is particularly adaptable to existing conventional trickling filter plants where stringent, new discharge requirements have been imposed and where existing structures and equipment are in good condition and can be used in an upgraded facility.
U.S. Environmental Protection Agency Contract No. Contract Number: 68-3-2175, Program Element No. 1BC611, SOS #3, Task D-1/24. "July 1978." Includes bibliographical references (pages 158-159).