The performance of a biofilter depends to a great extent on the filter material.
The filter material adsorbs the odorous compounds or other air pollutants from the waste air stream. Naturally existing microorganisms on the organic material receive the energy and nutrients they need from the decomposition of these compounds. In practice there are many different filter materials in use: composts, bark or bark products, peat products, heather, lava, etc.
Bioteg has developed a very effective filter material based on shredded pine roots.
A specific preconditioning procedure increases the media´s surface area, which is populated by microorganisms. The filter material´s low pressure drop provides for low energy costs. Our filter material is extremely stable, and alters its physical and microbiological properties only slightly over time. There is practically no long-term compaction of the filter bed.
Therefore, Bioteg Biofilters continue to function reliably for three to seven years, depending on the environmental conditions. After this time, the used filter material can be readily composted without further treatment.
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