Nutrients Original swine wastewater Autoclaved Wastewater Autoclaved wastewater bubbled with air
COD (mg/L) 2140 2060 1630
Ammonia Nitrogen (mg/L)a 86.6 81.5 41.2
Total Phosphorous(mg/L) 182.7 172.6 144.6
pH 8.37 8.75 8.13
a: The total nitrate content in the swine wastewater is negligible.
Table 2: Properties and nutrient contents of swine wastewater.