Study on the Factors Influencing the Deodorization and Nitrogen Retention Potential of Ammonia-assimilating Bacteria Acinetobacter sp.Z1 in Sludge Composting Process
In addressing the issue of ammonia and other odorous gas emissions during the composting of sludge,which leads to nitrogen loss in compost products,a study was conducted on the potential of ammonia assimilation bacteria Acinetobacter sp.Z1 to reduce ammonia emissions and store nitrogen based on assimilation in different pH,C/N and temperature environments during sludge composting.In the environmental range of pH 5～9,C/N 25～35,and temperature 20～50℃,the removal ability of NH4+-N by strain Z1 increases with the increase of pH,C/N,and temperature.The assimilation effect is strongest at pH 9,C/N 30,and temperature 40℃.This indicates that strain Z1 can adapt to the sludge composting environment,and exhibits optimal performance when ammonia volatilization is most severe at high temperatures,which is beneficial for reducing ammonia emissions and retaining nitrogen during the sludge composting process.
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