How a Biofilter Uses a Fan to Collect and Treat Odor
Covering an odor source helps only if the released air follows a controlled route. An extraction fan draws air from the enclosure toward a biofilter.
Follow the air through the process
The duct delivers air to the filter bed
In this arrangement, the fan feeds a distribution space beneath the bed. Air rises through the open spaces in the media. The collection duct, humidification section and bed all add resistance.
The moist surface is the transfer point
Odorous compounds move from the air into moisture on the media surface. Microorganisms in the biofilm then break down suitable compounds. The fan transports air; the biology performs the treatment.
Keep both air contact and moisture
The media needs the specified moisture and contact conditions. A dry area or an easy channel through the bed can reduce useful treatment. Simply increasing the fan speed does not repair the biological process.
Verify collection and treatment together
Check the enclosure capture, flow distribution and condition of the media. The required airflow must be evaluated with the actual duct and bed resistance, including changes during operation.
Airflow function
- Between the covered odor source and the biofilter distribution space, drawing collected air through the duct and toward the moist treatment bed.
- A centrifugal fan can develop the pressure required by collection ducts, conditioning sections and the bed. A corrosion-resistant construction may be relevant when the actual gas chemistry and moisture warrant it.
What can change the result
- Dry media, channeling or uneven distribution reduces contact with the active moist surface.
Start with the complete air path
Share your layout and the information you already have. Unknown values can be identified before a configuration is selected.
Match the fan to this air path
LONGWELL Anti-corrosion centrifugal family can be evaluated for this duty. A centrifugal fan can develop the pressure required by collection ducts, conditioning sections and the bed. A corrosion-resistant construction may be relevant when the actual gas chemistry and moisture warrant it.
Where it sits
Between the covered odor source and the biofilter distribution space, drawing collected air through the duct and toward the moist treatment bed.
Why consider this configuration
A centrifugal fan can develop the pressure required by collection ducts, conditioning sections and the bed. A corrosion-resistant construction may be relevant when the actual gas chemistry and moisture warrant it.
Check the result in your equipment
Discuss your biofilter extraction duty
Send collection airflow and bed resistance, gas composition, moisture and temperature, material compatibility and process controls. Ask LONGWELL to review a suitable configuration, fan curve, drawing and control details. A layout or existing fan model can start the review.
A layout, installation photos or your existing model is enough to start the discussion.