Assessment of the influence of media particle size on the biofiltration of odorous exhaust ventilation air from a piggery facility

Title: Assessment of the influence of media particle size on the biofiltration of odorous exhaust ventilation air from a piggery facility
Authors: Sheridan, B. A.
Curran, Thomas P.
Dodd, V. A.
Permanent link: http://hdl.handle.net/10197/4327
Date: Sep-2002
Abstract: Two pilot scale biofiltration systems were constructed and installed at the University College Dublin Research Farm, Lyons Estate. Experimental units consisting of two pens in a 12 pen pig house were sealed off from other pens. Air from each pen was extracted and treated separately in two biofiltration systems. Wood chips larger than 20 mm were selected as the medium for biofiltration system 1, whereas chips of between 10 and 16 mm were used in biofiltration system 2. The moisture content of the media was maintained at 69±4% (w.w.b.) using a load cell method. The volumetric loading rates ranged from 769 to 1847 m3 [gas] m-3 [medium] h-1 over a 63-day experimental period. Both biofilters reduced odour between 88% and 95%. Ammonia removal efficiencies ranged from 64% to 92% and 69% to 93% for biofiltration systems 1 and 2, respectively. Sulphur-containing compounds were reduced between 9-66% and -147-51% across biofiltration systems 1 and 2. The pH of the biofilters' leachate remained between 6 and 8. Pressure drop for biofilter 2 was 16 Pa greater than that of biofilter 1 at the maximum volumetric loading rate of . It is recommended that a wood chip media particle size greater than 20 mm be used for large scale operation of a biofiltration system on intensive pig production facilities to reduce the development of anaerobic zones and to minimize pressure drop on the system fans.
Funding Details: Not applicable
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2002 Elsevier Science Ltd.
Keywords: PigOdourAmmoniaOlfactometryBiofilterAbatement
DOI: 10.1016/S0960-8524(02)00034-2
Language: en
Status of Item: Peer reviewed
Appears in Collections:Biosystems and Food Engineering Research Collection

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