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Collaborative Project: Optimised reduction of bioaerosols in the exhaust air of pig production facilities by automatic regulation of the moisture content within filter material of air washers - subproject 1
Project
Project code: 2817200613
Contract period: 01.09.2014
- 31.08.2017
Budget: 208,208 Euro
Purpose of research: Experimental development
Regulating the moisture content of biofilters may enhance the efficiency of reducing bioaerosols in the exhaust air of livestock buildings. After a test period, a time-domain reflectometry (TDR) system was installed in two biofilters (paper filter, root wood filter) of a three stage filter of a pig’s house to measure the volumetric moisture content and the moisture distribution within the filters. A reduction of bacteria, fungi and endotoxins was detected in the course of seven different moisture adjustments. Low moisture led to odours and high moisture partly released relatively high concentrations of fungi. A relatively volumetric moisture content of 10 to 20% in both filters reduced the number of mesophilic bacteria and aerotolerant cocci on average to more than 90%. The endotoxin concentration was reduced from 79 to 95%. The TDR system has the potential to regulate the moisture content in paper and root wood filters which may be useful for an efficient reduction of bioaerosols.
Section overview
Subjects
- Agricultural Technology Animal Production
