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Table 4.8.1. Prototype Aerating Weirs
Owner
Dam
Weir Type
Materials
Purpose
GBRA1
Canyon
labyrinth
concrete wall
DO
TVA  2
S. Holston
labyrinth
timbers, concrete piers
DO, min. flow
TVA  2
Chatuge
infuser
timber crib, concrete piers
DO, min. flow
Pennelec
Deep Creek
labyrinth
concrete wall
DO
GP3
Lloyd Shoals
labyrinth
steel sheet
DO
EDF4
Petit Saut
cascade labyrinth
steel frame, concrete wall
DO, degas methane
1
Guadalupe-Blanco River Authority
2
Tennessee Valley Authority
3
Georgia Power
4
Electricite de France (weir in French Guiana)
4.8.2.5 Summary
Weirs are reliable, effective, low maintenance aerators that can meet both aeration and
minimum flow environmental objectives. Weirs represent a significant capital cost, but weirs can often
be the more cost effective option when flows and capacity factors are high, or when being considered
for both aeration and minimum flow objectives.
4.8.3 REFERENCES
Avery, S., and P. Novak. 1978 (Nov). "Oxygen Transfer at Hydraulic Structures;" J. ASCE
Hydraulics Division.
Electric Power Research Institute. 1990 (Nov). "Assessment and Guide for Meeting Dissolved
Oxygen Water Quality Standards for Hydroelectric Plant Discharges;" GS-7001; Research Project
2694-8.
Gameson, A. L. H. 1957. "Weirs and the Aeration of Rivers;" J. Institute of Water
Engineers, 11:477-490.
Hadjerioua, Boualem; T. A. Rizk; E. M. Laursen; G. E. Hauser. 1994 (Mar). "Regulation of Flow
Downstream of Weirs"; J. ASCE Hydraulics Division, Vol. 120, No. 3.
Hadjerioua, Bo, W. D. Proctor, and G. E. Hauser. 1997 (Apr). "Valve and Trash Rack Design -
Center Hill Reregulation Weir," TVA Engineering Laboratory, Norris, TN, WR97-2-590-172.
Hauser, G. 1991. (May). "Full-Scale Physical Modeling of Plunge Pool Hydraulics Downstream of a
Vertical Weir;" TVA Engineering Laboratory; WR28-1-590-153; Norris, TN.
4.8-10

 


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