Flushing litterless fattening houses with biologically treated slurry (SBR plant) - effects of flushing rate, percentage of treated slurry and seasons on gaseous emissions (methane, ammonia, nitrous oxide, carbon dioxide and odour)

H.F.A. Van den Weghe; P. Meissner; M. Kiuntke

Flushing litterless fattening houses with biologically treated slurry (SBR plant) - effects of flushing rate, percentage of treated slurry and seasons on gaseous emissions (methane, ammonia, nitrous oxide, carbon dioxide and odour)

äºPrecision Livestock Farming â05

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H.F.A. Van den Weghe

H.F.A. Van den Weghe ¹Research Centre for Animal Production and Technology, University of Goettingen, Germany

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P. Meissner

P. Meissner ²WEDA, Dammann and Westerkamp GmbH, Lutten, Germany herman.vandenweghe@agr.uni-goettingen.de

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M. Kiuntke

M. Kiuntke ²WEDA, Dammann and Westerkamp GmbH, Lutten, Germany herman.vandenweghe@agr.uni-goettingen.de

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Page Range:: 73â80

DOI:: https://doi.org/10.3920/978-90-8686-548-2_009

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Two identical compartments of one fattening pig house with fully slatted floor (120 animals per compartment) were studied comparatively with regard to their emission behaviour. One compartment - the experimental compartment - was equipped with flushing gutters. The second compartment with conventional slurry storage in the stall, was used as the reference compartment. The slurry of the experimental compartment was flushed out daily, separated and treated biologically using a Sequence Batch Reactor (SBR). The liquid phase obtained with this process was used for flushing without additional water supply. Thereafter, 40 % of the thin fraction underwent a biological treatment in the SBR reactor. In all fattening periods, significant differences (P < 0.001) of methane mass flows were registered between the experimental and the reference compartment. Independent from the daily flushing rate, methane emissions and emission reduction rates by flushing were very similar (81-89 %) in the winter half year. In the summer trial, the average reduction rate between the two compartments arrived up to 76 %. Flushing intensity did not have any significant influence on the reduction of methane formation. In all fattening periods, significant differences (P < 0.001) of ammonia mass flows between the flushing gutter and the reference compartment were registered. The ammonia reduction (24 - 42 %) depends on flushing intensity, season, air flow rate and percentage of treated slurry. In the flushing compartment odour emission was reduced by 30 % to 60 %. In general, nitrous oxide emissions were not significantly influenced. Carbon dioxide emission was reduced generally by 10 %.

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Precision Livestock Farming â05

ISBN:: 9789086865482

åºçç¤¾:: Wageningen Academic

å°å·åºçæ¥æ:: 10 Oct 2005

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- Life Sciences
  - General
  - Animal & Veterinary

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Flushing litterless fattening houses with biologically treated slurry (SBR plant) - effects of flushing rate, percentage of treated slurry and seasons on gaseous emissions (methane, ammonia, nitrous oxide, carbon dioxide and odour)

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