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Main Title Full-scale evaluation of activated bio-filter wastewater treatment process {microform} /
Author Rakness, Kerwin L. ; Schultz, James R. ; Hegg, Bob A. ; Cranor, Jan C. ; Nisbet, Richard S.
Other Authors
Author Title of a Work
Rakness, Kerwin L.
CORP Author M and I, Inc., Fort Collins, CO.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory,
Year Published 1982
Report Number EPA/600/2-82/057; EPA-R-806047
Stock Number PB82-227505
Subjects Sewage--Purification--Filtration ; Sewage sludge--Drying
Additional Subjects Sewage treatment ; Filtration ; Aeration ; Performance evaluation ; Revisions ; Design ; Cost analysis ; Biological processes ; Activated bio-filter processes ; Secondary sewage treatment ; Helena(Montana)
Library Call Number Additional Info Location Last
NTIS  PB82-227505 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 125 p. : ill. ; 28 cm.
The City of Helena, Montana uses an activated bio-filter (ABF) process for secondary treatment of its wastewater. The biological process consists of a redwood tower (bio-cell) and a short-term aeration unit. The ABF process is relatively new, and full-scale performance information at design loadings was not available. The primary objective of this research effort was to develop process operation and performance information at loadings near the manufacturer's recommended design criteria during the winter months of the year. Other objectives were to determine system energy requirements and system sludge production values.
Caption title. "August 1982." "EPA-600/2-82-057." Microform.