Biofiltration
- Removes sulfides (and commonly used for odor control)
- Uses microbes living on a support matrix to remove sulfides
- Microbes oxidize reduced sulfur compounds to sulfate
- Sulfides absorb into a liquid film and are then metabolized by the microbial cells
- Supplied as:
- Above grade packed towers
- Below grade systems filled with natural media like wood chips or peat moss
- Three major types:
- bioscrubber
- biofilter
- biotrickling filter
