Variations of Organic Nitrogen Forms During Composting Process Using Three Stages Controlled by Temperature
三阶段温度控制堆肥接种法对有机氮变化规律的影响

Compost is one of the disposal ways for the municipal solid wastes (MSW), and the content of nitrogen (N) effects compost quality. Dynamic changes of organic ni trogen were discussed during MSW composting with three stages controlled by temperature (TSCT) technology. At different compost phases, the samples were taken for the determination of the nitrogen forms, and the effect of TSCT technology on nitrogen forms was studied. During MSW composting, the acid hydrolysis N, total N and amino acid N are a significant correlation and all decreased at the initial stage of composting. While at final stage composting, the content of acid hyd rolysis N, amino acid N, aminosugar N and unidentified N of TSCT treatment incre ase by 10.67%, 16.17%, 7.17%, 22.44% compared to CK. The results indicate the composting with TSCT technology would reduce the loss of N, improve the quality of MSW compost.