Originally, biofilter was developed using rock or slag as filter media, but different types of material are used today.
12.
Vermifilters are a type of wastewater treatment biofilter or trickling filter but with the addition of earthworms to improve treatment efficiency.
13.
In 2001, Plum Creek at their Medium Density Fiberboard facility completed the installation of a biofilter, a new air emission treatment technology.
14.
Aeration occurs passively by the natural flow of air through the process ( three phase biofilter ) or by forced air supplied by blowers.
15.
In this context, a biofilter located after a septic tank constitutes a robust process able to sustain the variability observed without compromising the treatment performance.
16.
Barclay's arm is found to be out-of-phase, and further examination reveals microbes that were not detected by the biofilter.
17.
Nitrate is less toxic than ammonia ( > 100 mg / L ), and can be removed by a denitrifying biofilter or by water replacement.
18.
The bioswale, or other type of biofilter, wraps around the parking lot and treats the runoff before releasing it to the watershed or storm sewer.
19.
Although widely employed, the scientific community is still unsure of the physical phenomena underpinning biofilter operation, and information about the microorganisms involved continues to be developed.
20.
A number of companies offer these types or proprietary packing materials and multi-year guarantees, not usually provided with a conventional compost or wood chip bed biofilter.
