Record Display for the EPA National Library Catalog


Main Title Effects of Water Temperature and Elevation upon Aeration.
Author Hunte, John S. ; War, John C. ;
CORP Author Colorado State Univ., Fort Collins. Dept. of Civil Engineering.
Year Published 1973
Report Number DI-14-31-0001-3506; OWRR-A-007-Colo.; 00699,; A-007-Colo(3)
Stock Number PB-224 814
Additional Subjects ( Aeration ; Temperature) ; ( Elevation ; Aeration) ; Dissolved gases ; Oxygen ; Altitude ; Atmospheric pressure ; Sewage treatment ; Mathematical models ;
Library Call Number Additional Info Location Last
NTIS  PB-224 814 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 51p
A laboratory-scale mechanical aeration system was used to examine the variation in oxygen transfer rates into water as a function of water temperature. This research was done to study sewage treatment aeration systems at various altitudes. The over-all volumetric mass transfer coefficient, liquid phase base, increased linearly with water temperature at a rate of 2.84% per degree C. The relative aeration efficiency decreases with increasing elevation, water temperature, and dissolved oxygen concentration. For zero dissolved oxygen and elevation, the rate of oxygen transfer per unit volume and time is independent of water temperature for 0 to 50C. Equations were developed relating saturation dissolved oxygen concentration to temperature and atmospheric pressure to elevation and air temperature. An equation was developed for predicting average annual air temperature (for locations in the U.S.) from elevation, longitude, and latitude. (Author)