Biofilter technology that is sustainable and highly effective

Biofilters use naturally occurring microorganisms to treat air containing hydrogen sulfide (H₂S) compounds, VOCs and other odorous substances. Foul air is collected and sent to the biofilter where microorganisms metabolize the target contaminants to clean the air stream.

Biofilter technology is ideally suited for contaminants that are low molecular weight, polar and readily biodegradable. They are particularly effective for low loading applications at high flow volumes. You can achieve removal ratios in excess of 95% for water soluble compounds and 90% for BTEX and similar compounds. Furthermore, biofilters are extremely effective in treating odors caused by H₂S and other reduced sulfur compounds. Greater than 99⁺% H₂S removal and 90⁺% odor removal are common.

Envirogen biological vapor phase treatment systems offer the following features:

• Cost effective – very low operating costs.
• Reliable – over 130 biofilter technology systems installed in over 90 locations.
• Simple operation – minimal maintenance.
• High removal efficiencies – useful for broad range of contaminants and can be combined with other treatment technologies to reduce costs and improve performance.
• Broad range of configurations – adaptable for different influent air and loading rates

As stand-alone systems or in combination with other emissions control technologies, Envirogen biofilters offer an inherently sustainable solution with ease of operation and very low operating costs.

Advanced biofilter technology for managing a range of industrial and municipal applications:

• Asphalt manufacture
• Chemical processing
• Coatings manufacture
• Composting
• Food processing
• Fragrance manufacture
• Landfill gas/leachate extraction
• Petroleum and refining
• Pulp and paper manufacture
• Rendering
• Wastewater collection and pumping
• Wastewater treatment
• Wood products