| Description |
vii, 117 leaves : illustrations ; 29 cm |
| Summary |
"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, leaf ii. |
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