The use of an air supported pneumatic structure to reduce earthen lagoon gas emissions
January 1, 2000
Gas emissions and odour control is an increasing concern as swine commercialization expands, since odour continues to be a limiting factor for future growth. Present odour control technologies for...
Nitrification treatment of swine wastewater with acclimated nitrifying sludge immobilized in polymer pellets
January 1, 2000By Matias B. Vanotti
Nitrification of ammonia (NH4+) is a critical component for improved systems of animal wastewater treatment. One of the most effective processes uses nitrifying microorganisms encapsulated in polymer...
Denitrification in marsh-pond-marsh constructed wetlands treating swine wastewater at different loading rates
January 1, 2000
Denitrification in constructed wetlands can be very important in the treatment of swine lagoon effluent when land application areas are limited. The objectives of this investigation were to determine...
Ventilation, feed, and loading methods effects on hydrogen sulfide emissions from swine slurry
January 1, 2000
Four treatments were evaluated for their effect on emission of H2S of swine slurry stored in simulated beneath floor pits. The treatments were: (1) batch load without ventilation; (2) batch load with...
Swine wastewater treatment in a two stage sequencing batch reactor using real-time control
January 1, 2000By K. V. Lo
A laboratory scale two-stage sequencing batch reactor (TSSBR) was used to study the effectiveness of pH as a real-time control parameter in swine wastewater treatment. A Ringlace media was inserted...
Performance of a pond aeration system for treating anaerobic swine lagoon effluent
January 1, 2000By Philip W. Westerman
The waste treatment system presented in this article is one of the alternative waste management systems that have been evaluated for swine farms in North Carolina. The treatment system was designed...
Ammonia emission from a large mechanically-ventilated swine building during warm weather
January 1, 2000
Ammonia (NH3) emission from a grow-finish swine (Sus scrofa) building with an underfloor manure storage pit was evaluated during warm weather during 26 June to 25 September. Average daily mean (ADM,...
Changes in Swine Manure Solids During Storage May Affect Separation Efficiency
January 1, 2000By JUN ZHU
A laboratory study revealed the dynamic changes of solids in swine manure during storage in order to determine the best time for efficient solid-liquid separation treatment. Data showed that...
High dietary copper improves odor characteristics of swine waste
January 1, 2000By J.W. Spears
We conducted two experiments to determine the effects of dietary copper concentration and source on odor characteristics of swine waste. In both experiments, 192 weanling gilts and barrows were...
Comparison of the odour levels of biofiltered air and ambient farmyard air
January 1, 2000
Two experimental biofilters were used to determine whether an airstream treated by a biofilter could be distinguished from ambient farmyard air. Odourous air (mean of 958 OU measured using...
