|Reddy, G - NC A&T STATE UNIV.|
|Humenik, Frank - NC STATE UNIV.|
Submitted to: Recycling of Agricultural Municipal and Industrial Residues
Publication Type: Proceedings
Publication Acceptance Date: May 14, 2002
Publication Date: May 14, 2002
Citation: HUNT, P.G., POACH, M.E., REDDY, G.B., STONE, K.C., VANOTTI, M.B., HUMENIK, F.J. SWINE WASTEWATER TREATMENT IN CONSTRUCTED WETLANDS. RECYCLING OF AGRICULTURAL MUNICIPAL AND INDUSTRIAL RESIDUES. 2002. P. 315-318. Technical Abstract: One of the passive technologies being used for animal wastewater treatment is constructed wetlands. We have investigated swine lagoon wastewater treatment in both continuous marsh and marsh-pond-marsh (MPM) type constructed wetlands for their nitrogen treatment efficiency, ammonia volatilization, denitrification, and treatment modeling. Continuous marsh systems were better than the MPM systems particularly if planted to bulrush. Ammonia volatilization was generally <10% of the applied N in the marsh sections. However, the pond sections of the MPM systems had high levels of ammonia volatilization when loading rates exceeded 15 kg N/ha/day. Denitrification was particularly high in the floating sludge layer of the wetland surface especially when the wastewater was partially nitrified. Treatment efficiency was reasonably predicted by current modeling techniques used to municipal wastewater treatment in constructed wetlands.