Land Application Training and Demonstration Center at North Carolina State University

Posted in: Environment by admin on January 1, 1999 | No Comments

Manure if handled properly can be utilized as a value fertilizer alternative, however in cases when manure is not handled properly can lead to water contamination. In order to ensure the appropriate handling of manure the North Carolina General Assembly passed Bill 1217, which required all permitted animal wastre management systems to be operated by a certified operator.

Every certified operator must attend 10 hours of classroom training conducted by the North Carolina Cooperative Extension Service and pass an appropriate exam. Certified operators must also acquire 6 hours of training over a period of three years in order to retain their certification. The objectives were set out to emphasize those principles that will make the most impact on increasing their ability to safely manage waste application systems.

Modeling of Dust Concentrations Distribution in a Simulated Swine Room Under Non-Isothermal Conditions

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Experimental and numerical modeling were conducted to determine the dust concentration distribution in a simulated mechanically ventilated swine nursery room under non-isothermal conditions. Effects on dust generation rate, temperature difference between air supply and inside air, dust source location, and presence of obstructions on dust concentrations were also evaluated. Resulst from the numeric modelling agreed with the measured values indicated that the dust source location significantly influenced the dust concentration distribution; dust concentration was higher at or near the source. However, the effect of temperature difference beyween supply air and inside air, dust generation rate and the presence of the mick pigs on dust concentration distribution were not statistically significant.

Manure Management Systems Plans in the Context of Michigan Right to Farm Generally Accepted Agriculture and Management Practices

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Michigan adopted right to farm generally accepted agricultural management practices for manure management in 1998. They are revised annually and were most recently rrevised in November 1988. They define what is to be included in a manure management system plan and are more comprehensive than the recently released unifed national strategy for animal feeding operations. The Michigan Agricultural Environmental Assurance Program (MAEAP) has been developed to address environmental issues related to animal feeding operations.

Genetically-Engineered "EnviroPigs" Produce Less Phosphorus

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ODOR EMISSION FROM MIXTURES OF GROUND SWINE CARCASS MATERIAL AND LIQUID SWINEWASTE

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Factors affecting Nitrogen Transformations and Related Nitrous Oxide Emissions

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Odor and Gas Emissions from Animal Manure Storage and Buildiings

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Odour and hydrogen sulfide samples were collected from 19 animal storage sites and 26 livestock and poultry buildings in Minnesota throughout 1998. Samples were collected at each one of the locations in spring summer and fall, with the samples be taken from the surface of the manure storage facility and outside the fans on the buildings. These samples were not collected at the property as per Minnesota regulation. H2S and odour building concentration and emission levels varied 22 – 1156 ppb repectively, while odour emission rates ranged from 24 -1515 o.u.. While manure storage concentration and emsission levels ranged from 9 – 1003 ppn for H2S and 39 – 217.2 o.u. for odour. Both odour and H2S levels were found to vary throughout the study, rates were dependant on surface moisture, temperature, wind speed and other factors. H2s and odour concentration levels were found to be more constant over the summer and fall period than other livestock, however these levels were also reported one magnitude higher than dairy levels. The building odour levels show higher values earlier in the year as they did for manure storage units but the magnitude is considerably lower. H2S levels are also lower in magnitude than for pig manure storage units, but do show a similar trend of higher values in the fall compared to those recorded in the spring and summer.

Illinois Extension's Certified Livestock Manager Training Program for Livestock Producers

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In May 1997 the Illinois Livestock Management Facilities act became effective. The act focused on four main areas: facility design standards of lagoon storage, setback distances, facility operator education and waste management plans. Illinois extension under contract to Illinois Department of Agriculture developed the Certified Livestock Manager (CLM) training prgram to accomplish producer education set out under the act. The CLM program is mandatory for operations exceeding 300 animal units, and the workshops provide information regarding environmental stewardship, manure management systems, worker health and safety, manure nutrient management programs odour control and Illinois livestock waste regulations.

Correlating Microbes to Major Odorous Compounds in Swine Manure

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Malodor generation from swine manure is complicated by the involvement of many bacterial species that produce an extneive array of volatile organic compounds (VOC’s) A lack of understanding of the basic manure microbiology further complicates the problem. This review covers pertenint detailed information about indigenous bacteria generea in swine manure and their poentail for producing odourous volatile compounds. It addresses not only the odorous compounds in swine manure but also the relations between bacterial species and related compounds. It apperas the volatile fatty acids may be the major odorous compounds in swine manure, and two bacteria genera. More research is needed to identify the bacterial species within these two genera to better understand the kinetics of melecular production by the bacteria.

Alternatives to Minimize the Environmental Impact of Large Swine Production Units

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As the size of hog operations increase so do the potemtial for complaints of odours, water contamination vehicle traffic and noise. Water contamination complaints have been related to spills, purposeful discharges and structural failure; while odour complaints stem from buildings, manure storage facilities and application. Technologies exist to minimize or eliminate the impact of hog operations on the environment. Producers, elected officials and the public will need to identify concerns and evaluate alternatives to prevent or minimize the impact of intensive hog operations on water quality and the impact odours have on the surrounding area.