Advantages of the MultiPhase BioSystem Over Systems Such as Biofilters for VOC Control

• No clogging. Micron-size particles entrained in the gas stream accumulate in all
  biofilter media. Typical biofilter medias clog due to accumulation of fine particles on
  the top of the bed. In the MultiPhase system, a proprietary water-permeable,
  large-opening, ceramic biomedia is used, and particles are continuously washed
  from the bottom of the bed.

• Handles solids. Solids entrained in the inlet gas phase are removed by sprays in the
  inlet duct, and water is treated in the digester. Suspended solids in the digester are
  removed by the strainer and wet solids can be disposed or burned in a furnace.

• High temperature. If the inlet gas is high temperature, as in dryer exhaust, management
  of heat flow is critical to enabling effective aerobic treatment.  In the MultiPhase, heat is
  continuously monitored and removed using a variety of strategies.

• Treats both phases. Compounds present in the gas and liquid phases are both treated.
  Biofilters used for VOC control only treat compounds in the gas phase; for water-soluble
  compounds, such as methanol and formaldehyde, biofilters produce contaminated water
  that has to be treated separately.

• Handles condensables. Condensables in the inlet gas phase are condensed in the inlet
  duct by the sprays and emulsified and treated in the digester. Emulsification of condensables,
  such as waxes, is critical to prevent agglomeration and accumulation of these high molecular
  weight compounds in the biofilter media.  Emulsification is achieved by the biosurfactants
  that are naturally generated by the bacteria.

• Special ceramic media. Clogging due to biomass growth is a major issue for biofilters
  used for VOC control. In the MultiPhase design, the biomedia presents a high bed
  void fraction, and straight-passage diameter to allow the sloughed-off, excess biomass
  growth to be washed down into the digester liquid.  Here, it biodegrades, releasing
  nutrients back into the digester water.

• Accommodates shutdowns. When not treating contaminated incoming gas, as in the
  case of a plant shutdown, there are sufficient organics in the digester sump liquid to keep
  the bacteria viable, both in the digester and on the biofilter media, due to the continuous
  spray from recirculated digester liquid.  This is a major advantage over conventional
  biofilters for VOC control, which do not have a continuous supply of living organisms.
  
  

Interested in a cost-saving alternative to biofilters
for VOC control? Tell us about it . . . we can help you with
some guidelines.

Download MultiPhase BioSystem VOC Control brochure

For more information contact:
Kevin Moss (801) 294-5422
kevin.moss@tri-mer.com

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