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What's a natural biofiltration system?

Biofiltration is where organic contaminants in a gas stream pass through a bed of natural material and adsorb to the surface, where they are broken down by microorganisms.

Volatile compounds break down to carbon dioxide, water, mineral salts, and other harmless products.

The bed material consists of a mixture of 

  • Aged ocean shell
  • Natural bark
  • Compost

Selecting the right natural biofiltration media is critical. The mixture should be appropriate for the waste odour it is absorbing. It should be suitable to absorb the necessary gases, attach microorganisms, and effect good water holding. It must also be porous enough to maintain a pressure drop and provide good drainage. 

Learn more about Azwood® biofiltration natural media mixture.