|Humenik, Frank - NCSU, RALEIGH, NC|
Submitted to: National Workshop on Constructed Wetlands/BMPS for Nutrient Reduction and ...
Publication Type: Proceedings
Publication Acceptance Date: June 23, 2003
Publication Date: June 23, 2003
Citation: VANOTTI, M.B., HUNT, P.G., ELLISON, A.Q., SZOGI, A.A., HUMENIK, F.J., MILLNER, P.D. SUPER SOIL PROJECT: SOLIDS SEPARATION, NITRIFICATION-DENITRIFICATION, SOLUBLE PHOSPHORUS REMOVAL, AND SOLIDS PROCESSING SYSTEM FOR TREATING SWINE MANURE. PROCEEDINGS OF NATIONAL WORKSHOP ON CONSTRUCTED WETLANDS/BMPS FOR NUTRIENT REDUCTION AND COASTAL WATER PROTECTION. 2003.p. 58-61. Technical Abstract: Systems of treatment technologies are needed that capture nutrients, reduce emissions of ammonia and nuisance odors, and kill harmful pathogens. A system of swine wastewater treatment technologies was developed that accomplishes many of the tasks listed above. The system greatly increases the efficiency of liquid/solid separation by injection of polyacrylamide polymers to increase solids flocculation. Nitrogen management to reduce ammonia emissions is accomplished by passing the liquid through modules where immobilized bacteria transform nitrogen. Subsequent alkaline treatment of the wastewater in a phosphorus module precipitates recoverable phosphorus and kills pathogens. Wastewater leaving the system can be recycled to clean hog houses or for crop irrigation. The system has been pilot tested and is going through full-scale demonstration and verification as part of the Smithfield Foods-Premium Standard Farms/North Carolina Attorney General agreement to replace current lagoons with environmentally superior technology. If the full-scale demonstration proves to be successful, the technology can be used in new systems where the lagoon is omitted.