Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: August 15, 2004
Publication Date: October 15, 2004
Citation: Loughrin, J.H., Szogi, A.A. and Vanotti, M.B. Reduction of Malodorous Compounds in a Swine Waste Treatment System Without Lagoon. ASA/SSSA/CSSA Annual Meetings. Oct 31-Nov 4, 2004. Technical Abstract: The effect of successive waste treatment stages involving solids removal, nitrification-denitrification, and phosphorus removal on the malodorous volatile compounds of swine waste liquid slurries were examined. Preliminary headspace comparison of raw manure flushed from swine housing and treatment system effluent showed a reduction of over 90% in the levels of p-cresol, p-ethylphenol, indole and skatole from the wastewater treatment stream and a 75% reduction in the levels of phenol. Subsequent solid-phase extraction of liquid wastes measured 17 compounds at each stage of the treatment process. The greatest reduction in malodorous compounds occurred in the first denitrification stage with an over 50% reduction in the levels of phenol and indole and greater than 90% removal of p-cresol, p-ethylphenol and skatole. The efficiency of the waste treatment system in terms of odor, BOD and solids removal is discussed.