Biofilter

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biofilter

[′bī·ō‚fil·tər]
(engineering)
An emission control device that uses microorganisms to destroy volatile organic compounds and hazardous air pollutants.

Biofilter

 

apparatus for the biological treatment of sewage. It is a round or rectangular tank with a double bottom filled with a filtering material (boiler slag, granite chips, gravel, porous clay filler, and so on). The bottoms are at least 0.4 m apart. The filtering layer is 1.5–2 m high; the grainsize of the filtering layer is 30–50 mm, and of the lower underlying layer, 60–100 mm. When sewage passes through the filtering material, a biological film forms on its surface. The film consists of accumulations of bacteria and fungi that oxidize and mineralize the organic matter in the sewage. The oxidation capacity of a biofilter is determined experimentally.

References in periodicals archive ?
Nasdaq:AEMD), the pioneer in creating affinity biofiltration devices to treat life-threatening diseases, today announced results for the second quarter of fiscal 2016 ended September 30, 2015.
Invitation to tender : Detailed task description With this call a provider to be found, which can the engineering work for the expansion biofiltration and the elimination of micro-contamination ARA Oberglatt according to performance model SIA 112, part of Phase accomplish 32 construction project.
The Aethlon Hemopurifier is an affinity biofiltration device that targets the rapid elimination of infectious viruses and cancer promoting exosomes from the circulatory system of treated individuals.
Therefore enabling a synchronization of different EH biotechnologies (phytoremediation, denitrification wall, biofiltration, biogeochemical barriers and vegetated ecotones) to enforce and enhance the sustainability process.
BBF system is a gravity-based biofiltration technology that employs a combination of biological and physical filtration methods.
Energy Reduction Using Biofiltration in a Highly Efficient Residential Home.
In addition, biofiltration beds naturally extract unwanted chemicals from drain water before it goes into the storm drain, radiant heating and cooling is used in the large atrium area, and the "airfoil on top of the building is a unique signature piece that hides the mechanical equipment and provides some symmetry with the curves on the high rise," Burke says.
Another example is the installation of a stormwater biofiltration pond.
Finally it is worthwhile to mention the very important role of mangroves in biofiltration, which enable mangroves to remove excess nutrients and other pollutants from the soil.
This design takes the form of a passive biofiLtration basin and a passive biofiltration swale Located at opposite corners of the facility.
Among the topics are monitoring and source apportionment for particular matter pollution is six Asian cities, regional scale modeling for projecting ozone air quality and potential effects on agricultural crops in Southeast Asia, developing air-cleaning devices using chemically impregnated activated carbon for interior vehicle application, removing volatile organic compounds from contaminated gas streams by biofiltration, an integrated approach to rice straw management for reducing field-burning activity, and integrated air quality management for a brick-manufacturing village in Vietnam.