Pig manure treatment by organic bed biofiltration

Research and development work to optimize the BIOSOR™-Manure, a biofiltration process for pig manure treatment, have been realized on the site of a piggery (Île d'Orléans, Québec, Canada) using a 400 m3 biofiltration system. Despite strong variations in BOD5 (10,000–20,000 mg/L), in SS (10,000–20,000 mg/L), in TKN (2000–3800 mg/L) and in Ptot (500–900 mg/L), the BIOSORÔ system was able to maintain an overall pollutant removal performance averaging > 95% for the BOD5, > 97% for the SS, > 84% for the TKN and > 87% for the Ptot. By reducing the raw manure's organic load by more than 95%, the process eliminates over 80% the odour intensity coming from the production installations, the storage, the transportation and the spreading of the manure. The results obtained show that the BIOSOR™-Manure process is an efficient, simple and performing technology bringing a global solution to pig manure problems.