Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: April 4, 1996
Publication Date: N/A
Technical Abstract: Phosphorous (P) discharge concentration requirements do not apply to animal treatment systems since all wastewater needs to be applied to land. However, the total loads of P currently applied to land in animal confinement production systems may be excessive or disproportionate relative to other nutrients. It is critical, therefore, to develop best management practices to remove P prior to land application. Removal can be achieved using the adsorptive capacity of various materials such as soil or marl gravel, plant uptake, or liquid/solids separation. We evaluated four treatments for their capacity to remove P from swine wastewater: constructed wetlands, overland flow, media filtration, and flocculation using polyacrylamide polymers. Phosphorus removal efficiency of these treatments and their potential application will be discussed.