Laboratory Studies on Feedlot Runoff

by Terence J. McGhee, Assoc. Prof. of Civ. Engrg.; Univ. of Nebraska, Lincoln, NE,
Lyle R. Christenson, Water and Wastewater Engr.; Hoskins-Western-Sonderegger, Lincoln, NE,
William F. Bonneau, Grad Student; Univ. of Nebraska, Lincoln, NE,

Serial Information: Journal of the Environmental Engineering Division, 1973, Vol. 99, Issue 6, Pg. 883-896

Document Type: Journal Paper


Stabilization of feedlot runoff is attainable in activated sludge systems at liquid retention times of 2 days or more. Data on a laboratory aeration system operated at retention times of 12 hr to 4 days is presented. A power-function relationship for the 90-day Warburg BOD is determined showing that the long term oxygen demand of feedlot runoff departs significantly from the classical BOD formulation. The humic color typical of feedlot runoff is not affected by biological treatment. This color, earlier shown to be removable by metallic coagulants and activated carbon, is also adsorbed on soil columns.

Subject Headings: Laboratory tests | Runoff | Retaining structures | Biological processes | Activated sludge | Aeration | Oxygen demand | Activated carbon

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