Influence of low C/N ratio on the nitrogen changing in the composting of municipal solid waste and poultry litter
Municipal solid waste, poultry manure, and corn straw were conducted in static vessel to testify the practicability of co-composting in low C/N ratio level at 15, 20 and 25. Various kinds of nitrogen transformation were determined at different composting stages. During composting, all C/N ratios tended to decrease and it was remarkable at the treatment of 25. The total nitrogen reduced gradually with the composting time. The lower the C/N ratio was, the higher the final total nitrogen concentration was. Main way of nitrogen loss was volatilization in the form of ammonia originated from ammonium. The main period of nitrogen loss was during the high temperature period, at the same time, the NH <,4><+>-N decreased. The NO<,3><->-N increased after high temperature period. The concentration of usable nitrogen was increased after composting. The experimental results demonstrated composting in low C/N ratios is practicability.
C/N ratio composting poultry litter municipal solid waste
Qing-wei LI Bing-nan LV Yan-wu DU Hui-li LI
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, Heilongji School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, Heilongji
国际会议
北京
英文
288-294
2007-08-20（万方平台首次上网日期，不代表论文的发表时间）