Polluted Air Treatment
Biofiltration is one of the universal methods for efficient treatment of polluted air containing compounds such as hydrogen sulphide, ammonia, sulfur dioxide, amines, phenol, formaldehyde, formalin, and nitric acid. Biofilters use biological processes to remove air pollutants that are toxic, of environmental concern and/or have an unpleasant odour. A biofilter is a bioreactor that contains a substrate populated by living microorganisms (biosubstrate) that will digest biodegradable pollutants. Applications for biofiltration include processing of wastewater at sewage treatment plants, processing of industrial wastewater from various manufacturing, etc. Biofiltration has certain advantages over conventional scrubbers or adsorbers. The absorption capacity of biosubstrate is constantly available, and the transfer zone is stationary and relatively short. The biofilter regeneration is not required, and filter bed size is sufficiently small. Biofilter destroys contaminants, when conventional filters just adsorb them. These advanced features show that biofilter is more economical then conventional filter.
Osorno's BioScrub™ (also called BioDigestor®) with BioAer® aeration floor is one of the most advanced system offered world-wide, with excellent performance and reliability.
Typical Biofilter Applications for Odour Control
- Wastewater treatment plants
- Composting facilities
- Animal husbandry operations
- Coffee or cocoa bean roasting
- Rendering facilities
Typical Biofilter Applications for VOC Emission Control
- Industrial coating/painting operations
- Large scale printing operations
- Petroleum refineries
- Wood processing operations
- Large scale bakeries (ethanol emissions)