Impact of C/N Ratio on Nitrogen Changing during Composting with Poultry Manure
Poujtry manure, municipal solid waste were composted in a static vessel to testify the practicability of aerobic co-composting with C/N ratio 15, 20 and 25.Total nitrogen, ammonium nitrogen and nitrate nitrogen transformation were measured during composting. CfN ratios of three treatments all tended to decrease and it was remarkable at the treatment of PMC25 during composting. The total nitrogen reduced gradually with the composting time. The lower the C/N ratio was, the higher the final total nitrogen concentration has. Main way of nitrogen loss was volatilization in the form of ammonia originated from ammonium. The main period of nitrogen loss was during the thermophilic composting time, at the same time, the NH4+-N decreased. The NO3-N increased after thermophilic composting time. The concentration of usable nitrogen was increased after composting. The experimental results showed that composting with low C/N ratios is feasible.
poultry manure C/N ratio Nitrogen
Qingwei Li Bingnan Lv
School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin, China Depar School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin, China
国际会议
昆明
英文
317-319
2010-10-17（万方平台首次上网日期，不代表论文的发表时间）