Record Display for the EPA National Library Catalog


Main Title Evaluation and documentation of mechanical reliability of conventional wastewater treatment plant components /
Author Shultz, David W.
Other Authors
Author Title of a Work
Parr, Van B.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory : Center for Environmental Research Information [distributor].,
Year Published 1982
Report Number EPA/600-S2-82-044
OCLC Number 09382945
Subjects Sewage disposal plants--United States--Equipment and supplies. ; Sewage disposal plants--Equipment and supplies.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-S2-82-044 In Binder Headquarters Library/Washington,DC 12/04/2017
EJBD  EPA 600-S2-82-044 In Binder Headquarters Library/Washington,DC 09/05/2018
Collation 5 pages ; 28 cm
Caption title. At head of title: Project summary. "August 1982." "EPA/600-S2-82-044."
Contents Notes
The study summarized here was initiated to determine the in-service reliability, maintainability, and availability of selected critical wastewater treatment plant components. Components were considered critical if their failure caused an immediate impact on effluent quality. Eight treatment plant components were selected for study: pumps, power transmissions, motors, compressors, diffusers, valves, controls, and conveyors. These components were from four types of wastewater treatment plants: air activated sludge, oxygen activated sludge, trickling filter, and rotating biological contactor (RBC). Operation and maintenance data obtained from nine operating plants were used to estimate failure rates, mean time between failures (MTBF), mean time to repair (MTTR), and availability for each component. These performance statistics are by component type, size range, and application. Performance statistics were calculated from operating data for 119 pumps, 249 power transmissions, 285 motors, 17 compressors, 13 valves, and 269 controls. Design engineers and plant operators can use these calculated performance statistics to assist in selecting new equipment. The development of a performance data base and subsequent proper use of the data should improve treatment plant performance. These data allow the performance expected from certain equipment in certain applications to be estimated.