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Submitted to: Meeting Abstract
Publication Type: Abstract Only Publication Acceptance Date: 9/30/2014 Publication Date: 9/30/2014 Citation: Vanotti, M.B. 2014. Environmentally superior technology using systemic approach for odor reduction, clean environment and improved swine health [abstract].1st National Meeting: Efforts to reduce ordor emission from livestock farming. p. 51. Interpretive Summary: Technical Abstract: Increased use of intensive livestock raising systems and elevated production of livestock products has resulted in serious malodor problems. Environment-contaminating compounds generated from pig facilities include ammonia, carbon dioxide, hydrogen sulfide, methane, and fine dust. In North Carolina, the portion of pig farms capable of rising over 2000 animals increased from about 45% (1994) to 80% (2001) and now 19 million pigs are produced by those large scale pig farms every year. About 700 million chickens and 40 million turkeys were produced. It was estimated that production of about 30,500 pigs generates 300,000 L of animal waste (2013). In this presentation, the quantitative data of reduction of major odor-causing compounds, such as phenol, p-cresol, p-ethylphenol, indole, skatole, are presented and discussed. The biggest environmental concern of lagoons is the potential eutrophication of hydrological system and the emission of greenhouse gases (GHGs). Recently, in the USA, environmentally superior technology (ETS), has been suggested as a mean to solve those problems. EST has set 5 major objectives such as (1) ammonia elimination, (2) odor elimination, (3) pathogenic microorganism elimination, (4) nitrogen and nutrients elimination, (5) heavy metal elimination. North Carolina state government has been trying to replace lagoon-sprayfield system to EST by running 20 million dollar-worth international projects for the development of 5 core technologies. Currently it is launching 3rd generation projects. 1st generation projects (2003-2005) were focused on application of new systems such as phosphorus recovery facilities, nitrogen management system, separation technologies to existing lagoon system. 2nd generation system was mainly targeting nitrogen and phosphorus elimination through the nitrification/denitrification process. 3rd generation system aimed at precipitating solid waste by adding flocculants in an advanced way. Generally, significant reduction of odor emission from a large scale facility could be achieved only when at least two treatment technologies were applied simultaneously. |
