Biofilter Material

The selection of biofilter material for biological air filtration is vital for the biofilter's cleaning performance. Therefore, biofilter material must live up to essential requirements of the biofilter construction:

High population density
Good water-holding capacity
Large surface for microorganisms
Well-balanced nutrient supply
Low filter resistance
Good sorptive properties
Low smell
Long service life

The balance of these characteristics is a major prerequisite for optimal
biofilter function.

As biofilter material, we offer mixtures and layers of the following
raw materials:

Material:
Mixing ratio:
Service life:

Coconut fibre

Mixture of coconut fibre and peat fibre
50 : 50 or 70 : 30
up to 6 years - depending on raw gas and temperature

Material:
Mixing ratio:
Service life:

Biomix

Mixture of heather and peat fibre
70 : 30
up to 4 years - depending on raw gas and temperature

Material:
Mixing ratio:
Grain size:
Service life:

Wood-Mix

Mixture of spruce woodchip and bark mulch
50 : 50
20 - 40 mm
up to 3 years - depending on raw gas and temperature

Material:
Grain size:
Function:
Service life:

Spruce chips

Coarse spruce and oak woodchip and bark mulch
40 - 100 mm
and drainage layer
up to 6 years - depending on raw gas and temperature

Grain size:
Service life:

Root wood

Available in different grain sizes
up to 5 years - depending on raw gas and temperature

This is a small excerpt from the fields of application for our biofilter installations:

Flavour extraction
Yeast drying
Blood meal factories
Bristle drying
Fried fish production
Landfill gases
Feather drying

Grease melting
Fishmeal factories
Gelatin production
Foundries
Coffee roasteries
Cocoa roasteries
Municipal sewage treatment plants