Oxygen Transfer Efficiency in Small Diffusers

Small on-site aerobic package plants are one alternative being explored to address situations in which septic-tank and leach-field systems are not appropriate or feasible. Such small aerobic systems use either mechanical-aeration or forced-air diffusers. However, the only information available in th...

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Bibliographic Details
Published in:Journal of environmental engineering (New York, N.Y.) N.Y.), 1996-01, Vol.122 (1), p.55-57
Main Authors: Tumeo, Mark A, Stephens, Tamar J
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other wastewaters
Oxygen
Pollution
Q1
TECHNICAL NOTES
Wastewater treatment
Wastewaters
Water treatment and pollution
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Summary:Small on-site aerobic package plants are one alternative being explored to address situations in which septic-tank and leach-field systems are not appropriate or feasible. Such small aerobic systems use either mechanical-aeration or forced-air diffusers. However, the only information available in the literature on designing the aeration systems pertains to large-scale facilities. Oxygen-transfer characteristics of diffusers in shallow systems should be significantly different from those reported in the literature for deeper systems. This paper reports on a laboratory study conducted at the Environmental Technology Laboratory at the University of Alaska, Fairbanks, analyzing the oxygen-transfer characteristics of small diffusers. Data show that diffusers typically used in small on-site aerated wastewater-treatment systems provide lower overall oxygen transfer on a mass basis, but actually transfer oxygen at a faster rate than diffusers in deep tanks reported in the literature. The present research provides basic data of importance for the design of small wastewater-treatment systems using diffusers.
ISSN:0733-9372
1943-7870
DOI:10.1061/(ASCE)0733-9372(1996)122:1(55)