Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of pollution control processes : Upper Thompson Sanitation District /
Author Hegg, Bob A. ; Rakness, Kerwin L. ; DeMers, Larry D. ; Cheney, Robert H.
Other Authors
Author Title of a Work
Hegg, Bob A.
CORP Author Upper Thompson Sanitation District, Estes Park, CO.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available through the National Technical Information Service,
Year Published 1980
Report Number EPA-600/2-80-016; EPA-R-803831
Stock Number PB80-212855
OCLC Number 13606336
Subjects Sewage disposal plants--Colorado--Upper Thompson Sanitation District. ; Water treatment plants--Colorado--Upper Thompson Sanitation District. ; Upper Thompson Sanitation District, Colorado.
Additional Subjects Activated sludge process ; Water pollution control ; Sewage treatment ; Disinfection ; Ozone ; Nitrification ; Growth ; Performance ; Nitrogen cycle ; Biochemical oxygen demand ; Filtration ; Ammonia ; Oxidation ; Flow rate ; Colorado ; Denitrification ; Design flow
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  QH541.R2 EPA-, 600/2, 80-016 Region 1 Library/Boston,MA 04/29/2016
EJBD ARCHIVE EPA 600-2-80-016 Headquarters Library/Washington,DC 01/22/2014
EJBD  EPA 600-2-80-016 Headquarters Library/Washington,DC 04/05/2016
ELBD  EPA 600-2-80-016 AWBERC Library/Cincinnati,OH 03/28/2018
ESAD  EPA 600-2-80-016 Region 10 Library/Seattle,WA 11/07/1997
NTIS  PB80-212855 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation xiii, 220 pages : illustrations ; 28 cm.
The Upper Thompson Sanitation District (UTSD) advanced wastewater treatment facility, located in Estes Park, Colorado, incorporated several unique unit processes. Among these were flow equalizaton, attached growth nitrification, mixed media filtration and ozone disinfection. Plant design flow was 5,680 cu m/day (1.5 mgd to 1.0 mgd). The activated sludge, nitrification and filtration processes have two parallel trains. By selectively using one half of the available units design flow conditions were achieved at one-half the plant design flow rate. Overall plant performance in terms of BOD5 and TSS removal was consistent, averaging 95 percent and 96 percent, respectively. Ammonia oxidaton was not as consistent, due to loading extremes and cold weather operationg conditions. Performance characteristics of two nitrification tower media types (plastic dumped and redwood slats) were different.
Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, Cincinnati, Ohio, under the grant no. R-803831-01. Includes bibliographical references (page 163).