Record Display for the EPA National Library Catalog


Main Title Oxygen transfer studies at the Madison Metropolitan Sewerage District Facilities
Author Boyle, William C. ; Craven, A. ; Danley, W. ; Rieth, M.
Other Authors
Author Title of a Work
Craven, Andrew
Danley, William
Rieth, Michael
CORP Author Wisconsin Univ.-Madison. Dept. of Civil and Environmental Engineering.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1994
Report Number EPA/600/R-94/096
Stock Number PB94-200847
OCLC Number 48209792
Additional Subjects Sewage treatment plants ; Oxygenation ; Diffusers ; Off-gas systems ; Gas sampling ; Performance evaluation ; Aeration ; Field tests ; Wisconsin ; Activated sludge process ; Ceramics ; Fines ; Long term effects ; Maintenance ; Cleaning ; Fine pore aeration systems ; Oxygen transfer efficiency ; Madison(Wisconsin)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD  EPA 600-R-94-096 AWBERC Library/Cincinnati,OH 11/02/2001
NTIS  PB94-200847 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xi, 105 p. : ill. ; 28 cm.
Field studies at the Madison Metropolitan Sewerage District facilities were conducted over a 3-year period to obtain long-term data on the performance of fine pore aeration equipment in municipal wastewater. The studies were conducted on several basins in the East Plant containing ceramic domes installed in 1977 and two sets of first-pass basins in the West Plant with newly installed ceramic discs. The performance of the domes was excellent even after 10 years of service. The conclusion was based on measured oxygen transfer efficiencies by off-gas analysis, alpha calculations, and diffuser characterization. Reasons for excellent performance included routine maintenance of the diffusers and the use of high quality ceramic diffusers and hardware. There was evidence presented in the plant that operation at high SRTs (low F/M loadings), which produced complete nitrification, resulted in higher alpha Standard Oxygen Transfer Efficiency (alpha SOTE) values than operations at low SRTs. Studies on the impact of diffuser cleaning and hydraulic flow patterns on performance were also reported.
Project officer: Richard C. Brenner. Cooperative agreement CR812167. Photocopy.