Masters Theses


"Feedlot pollution is developing into a serious problem because of the trend toward intensive farming techniques and the increasing number of animals in confinement feeding operations. The purpose of this study was to characterize swine waste collected under a slotted feeding floor using a water-carriage system, and to evaluate the treatment of this waste in a staged lagoon system consisting of an anaerobic, a dual anaerobic-aerobic, and an aerobic lagoon. A small feeding floor unit capable of maintaining 3 separate groups of animals, and a pilot 3-lagoon system were designed, constructed, and operated for a period of approximately 4 months. Three different feed rations, ranging from a simple to a complete mix, were employed in parallel studies. The operation of the feeding unit was evaluated, the wastes produced were characterized, and the ability of the lagoon system to treat the animal waste was investigated. Collection of the swine waste in the water-filled pits under the slotted feeding floor, and daily removal of the fluidized waste essentially eliminated all odors associated with a typical feedlot. The resulting waste was much stronger than municipal waste, however, it could be effectively treated in the 3-stage lagoon system which was able to withstand high organic loadings without developing obnoxious odors or unsightly conditions"--Abstract, page ii.


Grigoropoulos, Sotirios G.

Committee Member(s)

Siehr, Donald J.
Roberts, J. Kent, 1922-


Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering


United States. Environmental Protection Agency. Office of Water Programs
University of Missouri--Rolla. Department of Chemical Engineering


University of Missouri--Rolla

Publication Date



vii, 117 pages


© 1972 Abraham H. Loudermilk, Jr., All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Feedlots -- Environmental aspects
Sewage -- Purification -- Anaerobic treatment
Swine -- Manure -- Environmental aspects
Animal waste -- Environmental aspects
Sewage lagoons

Thesis Number

T 2736

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