An on-farm swine waste treatment system for odor control, byproduct recovery and treated wastewater reuse in Hawaii
January 1, 1997
A prototype of a pig waste treatment system for a 240-270 pig operation was investigated for its potential of odour control, byproduct utilization and treated wastewater reuse. The high solid portion...
Effect of supplemental phytase and ideal dietary amino acid ratios in covered and hulless-barley-based diets on pig performance and excretion of phosphorus and nitrogen in manure
January 1, 1997By R. R. Grandhi
A total of 144 (72 barrows + 72 gilts) crossbred pigs were used to determine the effect of feeding supplemental phytase and ideal dietary amino acid ratios in covered barley (CB) or hulless barley...
Characterization of volatile organic emissions and wastes from a swine production facility
January 1, 1997
Analytical methods for monitoring the volatile organic compound (VOC) emissions, for defining atmospheric transport coefficients, and for monitoring solution phase chemistry have been developed to...
Swine wastewater treatment by media filtration
January 1, 1997By A. A. Szogi
A media filter was constructed to treat swine wastewater after anaerobic lagoon treatment. The media filter consisted of a tank (1.5-m-diameter x 0.6-m-height) filled with marl gravel. The marl...
The hindrance in the development of pit additive products for swine manure odor control: a review
January 1, 1997
This paper reviews the literature on the development of pit additive products for swine manure odor control. It addresses the problems currently existing in the areas of both product designing and...
Removal of Salmonella and microbial indicators in constructed wetlands treating swine wastewater
January 1, 1997By V. R. Hill
Reductions of Salmonella bacteria and enteric microbial indicator organisms were measured in swine wastewater treated by a field-scale surface flow (SF) constructed wetland at a commercial hog...
Nitrogen cycling through swine production systems: ammonia, dinitrogen, and nitrous oxide emissions
January 1, 1997By Lowry A. Harper
Ammonia (NH3) emissions from animal systems have become a primary concern for all of livestock production. The purpose of this research was to establish the relationship of nitrogen (N) emissions to...
Controlling odor and volatile substances in liquid hog manure by amendment
January 1, 1997
Five commercial pit additive products were examined for effectiveness of controlling the release of odorous and volatile compounds from swine manure. pH, volatile fatty acids, total solids, total...
Nutrient Losses from Unlined Bedded Swine Hoop Structures and an Associated Windrow Composting Site
January 1, 1997By Tom L. Richard
Mass balance analysis of livestock manure management systems can offer important insight into the flows and losses of nutrients and potential pollutants. This study describes the objectives,...
Composting hog manure/sawdust mixtures using intermittent and continuous aeration: ammonia emissions
January 1, 1997
Odorous emissions from manures have become a significant problem. Preliminary work on composting hog manure with sawdust had indicated that intermittent aeration could reduce ammonia emissions during...
