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 Table 4.5.1
Summary of Aeration-Oxygenation Systems
Characteristic
Description
Anoxic or low dissolved oxygen conditions (and
associated concerns) in the reservoir as well as
Targets
the release water without destratifying the
reservoir.
Injection of oxygen or air into the lower reaches
Mode of action
of the reservoir to increase the dissolved oxygen
levels.
Effectiveness
Very.
Longevity
Years.
Air systems require approximately five times the
Negative features
volume gas compared to pure oxygen systems
High maintenance levels required for diffuser
lines.
Partial destratification possible, especially with
higher volume gas flow rates if the diffusers are
not spaced properly.
Costs
High (installation and maintenance).
Very applicable to reservoirs with anoxic or low-
Applicability to reservoirs
DO conditions.
4.5.6 REFERENCES
Fain, T. G. 1978 (Oct). "Evaluation of small-pore diffuser technique for reoxygenation of turbine
releases at Fort Patrick Henry Dam," Report No. WM28-1-32-100, Tennessee Valley Authority,
Norris, TN.
Fast, A. W., and Lorenzen, M. W. 1976 (Dec). "Synoptic survey of hypolimnetic aeration," Journal
of Environmental Engineering, ASCE, Vol 102, No. EE6, pp 1161-1173.
Fast, A. W., Lorenzen, M. W., and Glenn, J. H. 1976 (Dec). "Comparative study with costs of
hypolimnetic aeration, Journal of Environmental Engineering, ASCE, Vol 102, No. EE6, pp 1175-
1187.
4.5-6
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