The project involved evaluation of a Taiwanese three-stage hog manure treatment technology under Canadian conditions. To do so, a pilot plant treatment system was designed and built. The process involves passing the manure through a solid-liquid separator to remove the larger solids; anaerobic digestion of the liquid fraction; followed by aerobic treatment. The plant did not achieve treatment levels that would permit discharge to surface waters, as is the case in Taiwan. But was very effective for flushing the barn and produced a noticeable improvement in barn air quality. This was likely due to the differences in operational temperature between Taiwan (greater than 25A