BioCon®

The BioCon process provides safe, simple and efficient biosolids drying & energy recovery. The BioCon dryer is a dual-belt convective air dryer designed to be one of the safest on the market. Low drying temperatures and gentle material handling provide a safer drying environment. The wet biosolids are dried at a temperature of less than 350°F in the first stage; then the drying temperature is lowered as the total solids concentration increases. In order to ensure an odor free operation, wet drying air is passed through a condenser and reintroduced into the dryer. Low operating temperatures allow the process to utilize a variety of waste heat sources, such as the easily added BioCon Energy Recovery System (ERS), or BEES BioCon Energy Exchange System.

BENEFITS

• Low Drying Temperature
• Minimal Odor, Noise and Dust
• EPA Class A Product
• Designed for Intermittent or Continuous Operation
• Easily Upgraded with BioCon Energy Recovery System (ERS) and BEES
• No Recirculation of Dried Biosolids
• Reduced Transportation and Disposal Costs

The BioCon biosolids dryer and Energy Recoveyr System (ERS) were installed at the Buffalo Wastewater Treatment Plant. The processes allowed the plant to increase its' biosolids capacity to 1,850 tons of dry solids per year. The ERS provides over 80% of heat for the dryer from renewable fuels, and reduces the biosolids mass by 95%.

Buffalo Wastewater Treatment Plant recieved several awards in 2009 including:

• The American Council of Engineering Companies Engineering Excellence Grand Award
• The Minnesota American Council of Engineering Companies Grand Award
• The Minnesota Society of Professional Engineers (MSPE) 2009 Seven Wonders of Engineering Award

For additional information on the BioCon, ERS or BEES BioCon Energy Exhcange processes, please contact Travis Smith at (919) 677-8310.