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Bio Oxidation

Dual-BioPhase™ Bio Oxidation: a game‐changer in pollution abatement.

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Advanced technology for HAP, VOC and odor control.

Dual-BioPhase™ Bio Oxidation

Air pollutants may be treated by chemical oxidation, thermal oxidation or biological oxidation. Bio Oxidation is a biological process that uses microorganisms to convert HAPs, VOCs and Odors into harmless by-products of carbon dioxide (CO2) and water (H2O). Recognizing the limitations associated with traditional bio-filters and other conventional technologies i.e. RTO/RCO, Process Combustion Corporation’s (PCC) Dual-BioPhase™ system offers an innovative bio-filtration process that achieves an entirely new level of performance for biological air treatment systems.

What is Dual-BioPhase™ technology?

Pollutant compounds that dissolve in water are treated in the water phase, while compounds that remain in air are treated in the gas phase. The Dual-BioPhase™ design utilizes a unique synthetic media on which contaminant degrading microorganisms are immobilized as biofilm on the surface of the media. As air flows through the bed of media, the contaminant comes in contact with the active biofilms thus degrading the pollutant compounds. A continuous flow of water trickles through the media bed to keep the biofilms biologically active and free of biomass build up.

The system achieves maximum treatment efficiency by also adding a biocatalyst nutrient to the circulating water, enhancing absorption of the airborne contaminants into the water where they are biodegraded by suspended culture.

With the PCC Dual-BioPhase™ system, contaminant compounds in the waste gas are biodegraded in the liquid phase of the lower sump, as well as in the gas phase within the upper bed of special synthetic media.

Inlet waste gas temperature is typically in an ambient temperature range of 40°F – 200°F. Temperatures exceeding the design limitation can be adjusted by air mixing, quenching or heat exchanging, as required for each specific application.

Where to use Dual-BioPhase™ technology:

  • HAP & VOC abatement – Dual-BioPhase™ technology has a significant cost advantage over RTO (Regenerative Thermal Oxidizer) technology. Typical pollutant concentration range is (25 – 5,000 ppmv). A single Dual-BioPhase™ unit can handle gas flow in excess of 250,000 acfm. Examples of organic compounds include, but are not limited to: aromatic hydrocarbons, sulfur and nitro containing carbon compounds, alcohols, aldehydes, carbonic acids, ethers, ketones, and some inorganic compounds i.e. ammonia and hydrogen sulfide.
  • Odor control – Use Dual-BioPhase™ technology for virtually any odor; especially industrial wastewater where odor and VOC treatment may be required. Typically used where odor concentrations are <50 ppmv.

Evaluation Category Chart


Cost advantage of Dual-BioPhase vs. RTO


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