Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Hydraulics of Waste Stabilization Ponds. Part I. The Effect of Hydraulic Flow Characteristics on Treatment Efficiency. Part II. The Effect of Wind Mixing in Stratified and Unstratified Ponds.
Author Watter, Gary Z. ; Magelso, Kenneth A. ; Georg, Robert L. ;
CORP Author Utah Water Research Lab., Logan.
Year Published 1973
Report Number PRCWRR18-1; DI-14-31-0001-3545; OWRR-A-008-UTAH; 10414,; A-008-UTAH(4)
Stock Number PB-220 955
Additional Subjects ( Lagoons(Ponds) ; Hydraulic models) ; ( Wind tunnel models ; Lagoons(Ponds)) ; Fluid flow ; Sewage treatment ; Stratification ; Mixing ; Mathematical models ; Flow distribution ; Diffusion ; Baffles ; Efficiency ; Dyes ; Density ; Wind shear ; Reynolds number ; Utah ; Design criteria ; Logan(Utah) ; Aeration ponds
Library Call Number Additional Info Location Last
NTIS  PB-220 955 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 110p
The treatment efficiency of waste stabilization ponds can be influenced significantly by the hydraulic flow patterns within the ponds. To evaluate the effects of shape and depth of the ponds, placement of inlets and outlets, baffling and density stratification an hydraulic model of the prototype Logan City ponds was constructed. The mixing properties of the model ponds were evaluated by injecting a slug of rhodamine WT dye into the inflow and measuring the dye concentration vs time at the outlet. A mathematical (finite-stage) model of the mixing process was adapted to stabilization ponds to determine if a more theoretical design was feasible. A wind-water tunnel was constructed to simulate a wind-over-water situation. A relationship between wind velocity and surface shear stress was established. Diffusion coefficients describing the wind driven mixing of an injected dye were evaluated as functions of the surface shear-velocity Reynolds number.