The Carbofil® biological reactor is a type of down-draft reactor that uses impellers to entrain oxygen and increase the opportunity for that oxygen to dissolve in wastewater. The oxygen is used for oxidation of organic matter as well as for nitrification. The system flow scheme through an anoxic reactor provides opportunity for denitrification of nitrate formed in the aerobic reactor. A pilot scale reactor was constructed at a swine finishing farm near Faison, NC and evaluated over an eight week period to establish the potential of the system to efficiently remove ammonia and chemical oxygen demand (COD) from flushed swine wastewater. The odor reduction potential of the system was also evaluated. A total of 16 samples of influent and effluent were taken over the evaluation period and analyzed for chemical constituents. Separate samples were collected on four different occasions near the end of the project and analyzed for odor intensity, irritation intensity, and hedonic tone. Results showed 93% removal of ammonia, 91% removal of soluble Kjeldahl nitrogen, and almost 83% removal of soluble COD.