" " Bio Reaction Biogas Oxidizers - HEE-Duall - CECO Environmental


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Bio-Reaction Oxidizers

Our HEE-Duall brand Bio-Reaction Biogas Oxidizers are reliable and durable systems that utilize three stages of biological activity to digest variable concentrations of vapor phase volatile organic compounds (VOCs) and odorous compounds: Bio-Trickling chamber, Bio Matrix chamber, and an extended, aerated, waste water treatment chamber.

Our systems can be designed and sized to accommodate most compounds at your facility and any process airflow you may require. We strive to deliver solutions to fit your specific applications, ensuring optimal performance and efficiency with premium quality construction materials, increased removal efficiency technologies, and custom designs, while meeting strict environmental standards.



  • Low Total Cost of Ownership
  • High removal efficiency of VOCs with technical advances incorporated in our systems
  • Premium quality materials of fiberglass (FRP), concrete, or stainless steel for durable and reliable units
  • Economical and low operating life-cycle costs
  • Energy-efficient
  • Maintenance-free and compact space-saving footprint for increased floor space



  • Flexible design for easy expansion
  • No filters to replace/regenerate/dispose
  • No costly chemicals required


HEE-Duall Bio-Reaction Biogas Oxidizers

For more than four decades, the CECO HEE-Duall brand has been an international leader in the design and distribution of purification products. We use the latest technology to control hazardous and volatile exhaust compounds in a broad range of industries. Our diverse product line includes everything necessary for managing the collection, handling, and control of caustic airstreams, mists, gases, and vapors. Our Bio-Reaction Biogas Oxidizers lead the industry in cleansing harmful particles from industrial exhaust streams that can be damaging to equipment and the environment. Purifying with HEE-Duall means that your emissions are cleansed effectively and efficiently.

Along with unequalled craftsmanship, HEE-Duall also provides custom-designed solutions for your specifications, no matter the scope or size. HEE-Duall products are created to handle a large variety of jobs. Choose from our diverse line to find the right equipment for your needs, and we will be beside you all the way. Our expert staff offers unmatched knowledge in the purification process, and our customer service defines the industry gold standard. Choosing the right purification equipment for your company is difficult. But when you choose HEE-Duall, the job is easy. Choose the most advanced, most reliable, and most carefully crafted equipment in the industry.