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NC STATE UNIVERSITY
Animal and Poultry Waste Management Center
A candidate technology of the North Carolina Agreements Project:
Development of Environmentally Superior Technologies per
Agreements Between the Attorney General of North Carolina and
Smithfield Foods, Premium Standard Farms and Frontline Farmers
Super Soil Systems USA
The two elements of this project, a liquid treatment system and a solids processing facility, are located at two
different sites. The liquid treatment system is located at Goshen Ridge Farms, a 4,360-head finishing farm near
Warsaw, North Carolina. Owned by Lewis Fetterman, Jr., Goshen Ridge Farms is under contract for production
with Premium Standard Farms. The solid waste management portion of this project is located at Timber Ridge
Farms near Clinton, North Carolina. C. Ray Campbell, vice president of research and development for Super Soil
Systems USA, leads the technology team for this project.
Liquid treatment begins with separation of
the solid and liquid portions of the waste
stream. Solids separation is accomplished
using polyacryalmide, a flocculating agent.
The solids are transported to the Clinton
site, where they are composted and
blended with other materials using a
proprietary process to produce a growth
media. This value-added product is then
bagged for sale and use off the farm. A
portion of the solids is being used in
evaluating another technology, the Orbit
High Solids Anaerobic Digester.
The liquid portion of the waste stream
flows between tanks in a circulating loop
undergoing denitrification as a result of
aerobic activity in one tank and nitrification
through the use of concentrated nitrifying
bacteria in the second tank. Nitrogen is
removed from the waste stream during this
stage of the process. The liquid then flows
to a settling tank, where phosphorus is
removed through the addition of calcium
hydroxide and a dewatering bag system.
Calcium phosphate, which has value as a
fertilizer, percipitates out during this
process, providing a second value-added
product. The pH of the liquid is raised
during phosphorus removal, which kills
bacteria and viruses. Roughly 80 percent of
the liquid is recycled through the hog
houses, while 20 percent is used to irrigate
crop fields.
Denitrification-nitrification Tanks (homogenization
tank is in foreground; see process diagram below)
Solids Separation Equipment
Super Soil Systems USA (continued)
Aerial View
Super Soil Systems USA (continued)
Technology Provider: Super Soil Systems USA, Inc.
Lewis M. Fetterman
President and CEO, Super Soil Systems USA, Inc.
484 Hickory Grove Road
Clinton, NC 28328
Phone: (910) 564-5545
C. Ray Campbell, Ph.D.
Vice President for Research & Development and Project Coordinator
Phone: (919) 851-5751
E-mail: [email protected]
Technology Evaluation Team
Dr. Matias B. Vanotti
USDA-ARS Coastal Plains, Soil, Water and Plant Research Center
2611 W. Lucas Street
Florence, SC 29501
Phone: (843) 669-5203
E-mail: [email protected]
Dr. Patrick G. Hunt
USDA-ARS Coastal Plains, Soil, Water and Plant Research Center
2611 W. Lucas Street
Florence, SC 29501
Phone: (843) 669-5203
E-mail: [email protected]
Dr. Frank J. Humenik
Waste Management Programs Coordinator
College of Agriculture and Life Sciences
North Carolina State University
Raleigh, NC
Voice: (919) 515-6767; Fax: (919) 513-1023
E-mail: [email protected]
Dr. Patricia Millner
Sustainable Agricultural Systems Laboratory and
Animal Waste Pathogens Laboratory
USDA-ARS-BARC
10300 Baltimore Ave., Bldg. 001, Rm 140
Beltsville, MD 20705-2350
E-mail: [email protected]