SE—Structures and Environment: Biofiltration of Odour and Ammonia from a Pig Unit—Biofiltration of Odour and Ammonia from a Pig Unit—a pilot-scale Study
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|Title:||SE—Structures and Environment: Biofiltration of Odour and Ammonia from a Pig Unit—Biofiltration of Odour and Ammonia from a Pig Unit—a pilot-scale Study||Authors:||Sheridan, B. A.
Curran, Thomas P.
Dodd, V. A.
|Permanent link:||http://hdl.handle.net/10197/4332||Date:||Aug-2000||Abstract:||A pilot-scale biofiltration unit was constructed at a pig finishing building on the University College Dublin research farm. The biofiltration system was investigated over three trial periods. Exhaust air from a single pen was extracted by a variable speed centrifugal fan and passed through a humidifier and biofilter. A 0·5 m depth of woodchips of over 20 mm screen size was used as the biofilter medium. The moisture content of the medium was maintained at 64±4% (wet weight basis) for trial one and 69±4% (wet weight basis) for trials two and three using a load cell method. The volumetric loading rate varied from 769 to 1898 m3 [air] m−3 [medium] h−1 during the three trial periods. Odour and ammonia removal efficiencies ranged from 77 to 95% and 54 to 93%, respectively. The pH of the biofilter leachate remained between 6 and 8 throughout the experimental periods. The pressure drop across the biofilter ranged from 14 to 64 Pa. It is concluded that a wood chip media particle size >20 mm is suitable for use in biofiltration systems on intensive pig production facilities. This will minimize the pressure drop on the system fans to reduce overall operation costs. It is recommended that a filter bed moisture content (wet weight basis) of greater than 63% be used to maintain overall efficiency. An efficient air moisturizing system (humidification and bed sprinkling) along with a properly designed air distribution system must be incorporated in the overall design when operating at such high volumetric loading rates.||Type of material:||Journal Article||Publisher:||Elsevier||Copyright (published version):||2002 Silsoe Research Institute. Published by Elsevier Ltd.||Keywords:||Biofiltration system;Odour reduction;Air moisturizing system;Ammonia removal||DOI:||10.1006/bioe.2002.0083||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Biosystems and Food Engineering Research Collection|
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