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 ?
Limited Tenders are invited for Procurement of biofilter Prototype Biofilter Electric Panel Nutrient Dosing,Supply And Installation Of Blower And Ducting System Based On Requirements
Argentina), for comparison with the traditional bacterial biofilter.
This greatly reduced the ATAD biofilter odor emissions and the number of people affected by the ATAD process but this was still not satisfactory, especially to users of the bike and walking path running adjacent to the treatment plant.
Alternative 3: Install a living wall and a biofilter equipped with a return air plenum that can be connected to the nearby air-handling unit's return duct.
A biofilter requires oxygen to provide an aerobic environment where nitrifying bacteria can thrive.
Cast across North America by local precasters, and integrated into standard size septic tanks, Premier Tech Aqua's Ecoflo Coco Biofilter is widely recognized as an ecological and durable compact filter for onsite wastewater treatment systems.
In Brief: A multidisciplinary team of undergraduate students from Auburn University's department of biosystems engineering and department of industrial and systems engineering showcased their senior work--a biofilter media design aimed to improve water treatment systems--during the USA Science and Engineering Festival in Washington, D.
Nitrification as the oxidation of ammonium ion and nitrite occurs in the bacterial film of the biofilter (14).
Biofilter scheme: 1--aspirator; 2--VOC gas source; 3--biogenic solution tank with pump; 4--excess water reservoir; 5--biofilter housing; 6--sampling holes; 7--the liquid phase; 8--polypropylene plate; 9--gas phase; 10--irrigation nozzles; 11, 12, 13--connecting hoses; 14--polypropylene plates segment; 15--polypropylene plate
The Barangay Water Project uses malunggay seeds packed with an adsorbent, such as sand, carbonized rice husk or activated carbon, to create a point-of-use biofilter that can either be used at home or in small communities, like a school, for purifying drinking water, Canada-based Sheree Pagsuyoin, the project's lead investigator, said in an e-mail interview.
It includes a 1,750-square-foot loading building, one composting drum, a 1,400-square-foot discharge building and exterior biofilter, along with associated improvements.
TimCo has agreed to increase the height of its odour stack after testing of its new biofilter system showed less than optimum results.