Manure management in a 700-head swine finishing unit in the American Midwest: An integrated system incorporating hydraulic manure transport with recycled anaerobic lagoon liquor and final effluent use by corn (Zea Mays)

Intensive livestock production in confined-housing units has led to a need for new manurehandling technology. A system that has received extensive field testing in the midwestern states of the U.S. has been anaerobic lagooning, with use of a renovated water for hydraulic manure transport. The hydraulic aspects of manure flushing were reviewed briefly before discussing the anaerobic lagoon as a biological treatment unit. Methods of applying excess water accumulations to fertile cropland were reviewed before reporting data describing the uptake of selected metals in the grain and leaves of the corn plant (Zea mays).