Biofiltration0 pages

CLEAN AIR

Environmental Engineering

Cost-effective solutions for

Air Pollution Control

Tholander Ablufttechnik I Biofiltration I 2010

Biofiltration

Like natural biodegradation the purification of air pollutants by biofiltration works with indigenous

microorganisms.

Working principle

The heart of the biofilter is the filter bed consisting of organic material. A natural

microflora is colonizing on the large surface of the chosen filter medium. Good

biofilter media stimulate multiplication and adaptation of micro-organisms by

supplying optimal growth conditions. The pollutants are (ad)sorbed by the large

inner surface of the biofilter medium and catabolized by the microorganisms

within the biofilm. To use this natural processes in a highly efficient way Tho-

lander chooses specifically treated biofilter material with a high biological

activityresulting in excellent purification efficiency and an even flow.

To preserve the optimum conditions of growth and degradation for the micro-

organisms Tholander configures its biofilters with an upstream scrubber unit. This

is a packed column integrated into the distribution chamber of the biofilter and

which pre-conditions the inlet air: In the simplest application pre-conditioning

relates to humidifying the air up to saturation. The humidification allows

maintaining the water content of the biofilter medium at a sufficient level, needed

for proper functioning of the microorganisms.

Kernschuttung

Vorwascher

Pumpe

AnstrSmschicht

Tragrost

Tholander Ablufttechnik GmbH WerkstraGe 31 Tel:

68519 Viernheim Fax:

Deutschland

[+49] 62 04 - 92 92 3-0

[+49] 62 04 - 46 41

info@tholander.de

www.tholander.de

1