Abstract
In spite of considerable fluctuating operation conditions a multi-stage test facility for the treatment of poultry exhaust air secured a good and reliable particulate matter reduction. It was equipped with an initial dry dedusting unit, an acidic and a subsequent water scrubber unit. At fi lter loads between 1 800 and 3 600 m³/(m² • h) a mean particle reduction effi ciency (n = 149) of at least 57 % was verifi ed for a particle diameter between 2.0 and 2.5 µm and more than 98 % for a particle diameter between 6.5 and 7.5 µm. Also 72 % of the nitrogen was separated in a useable form from the raw gas as a nitrogen balance over six month of operation showed. The considerable fluctuating ammonia emissions from the tested animal house offered a noticeable correlation with the dung removalinterval.
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