Pre-engineered Concrete Biofilter – Built-in-Place Solutions

Envirogen built-in-place biofilters are pre-engineered designed solutions for mid to high air flow volatile organic contaminant (VOC) and odor control applications. These build in place (BIP) biofilter technology systems are employed in point source or centralized emissions control applications, for air flows ranging from 1,000 to well over 100,000 cfm. Concrete biofilter BIP installations are based on standardised system components and multi-bay designs to lower installed costs, increase flexibility of design, and allow for expansion as plant needs change and evolve.

Built-in-place biofilters

Individual corrosion-resistant concrete-foundation biofilter bays are covered with UV-resistant FRP or aluminium. Organic or inorganic biofilter media is customised to contaminants, treatment requirements, and cost considerations – and can be guaranteed for up to 10-years of life. These advanced build in place concrete biofilter systems include irrigation and nutrient supply, featuring a programmable logic controller that monitors temperature, humidity, pressure, low pressure drops and fluid levels.

Built-in-place biofilter technology for exacting process control

Envirogen built-in-place biofilters feature the latest concepts in odor control solutions and VOC control system design. They can be configured to include both biofilter and biotrickling filter designs for multi-zonal treatment – allowing them to efficiently address H₂S, reduced sulfur compounds (RSC) and volatile organic compounds (VOC). Beyond standardized bay designs, Envirogen can tailor custom built-in place biofilter to available space in a facility.

Our state-of-the-art portfolio includes biofilters, biotrickling filters and combinations of the two technologies – in both standardised and custom designs. Envirogen can provide solutions for a broad range of contaminants and flow rates from 120 to over 100,000 cfm. Envirogen biofilters are the result of more than three decades of experience in managing industrial and municipal emissions, featuring advanced engineering concepts that can be tailored to provide a low lifecycle cost solution in your facility.

Envirogen modular biofilter technology offers robust and sustainable solutions:

• Efficient contaminant destruction
• Reduced chemical usage and chemical storage
• Reduced energy usage
• Lower carbon footprint
• Lower overall emissions
• Adaptability to changing emission sources and levels
• Over 130 biofilter technology systems installed at over 90 locations

Key features:

• FRP construction without metal support structure (no corrosion)
• Long media life (guaranteed) – numerous media available with to 10-year warranty
• Ease of Installation (modular)
• “Drop and Start-up” (i.e., drop unit on pad, pre-loaded media)
• Single or dual-zone media tailored to air influent and treatment goals
• High degree of automation and process control

The Envirogen build in place biofilter range

Envirogen custom build biofilter solutions: high-volume, centralised treatment with low lifecycle costs

Envirogen experience

• Clark County Water Reclamation District, Nevada
• Design and Case Study of the odor control system for The Rockland County co-composting facility
• Integrated biotrickling and biofilter systems (BTBF Series) – Nuese River Emissions Control Installation
• Envirogen wins Kalamazoo $1.7MM biological foul air mitigation treatment system

Further reading on biological treatment vapor

• Envirogen built-in-place (custom build biofilter) solutions brochure
• Combating The Invisible Enemy