摘要
试验采用静态好氧工艺对厨余垃圾进行了堆肥化处理,实验结果反映了厨余堆肥各形态氮的转化规律及其氮损失的数量和氨挥发的阶段。堆制期间,厨余堆肥全氮、有机氮的含量呈显著下降趋势,铵氮含量呈上升趋势,硝氮含量变化不大;堆肥结束后,厨余堆肥水溶性氮组分大量提高,堆肥有机氮90%以上以水溶态形式存在,水溶性总氮达到了堆肥全氮的81%;一次发酵前后,厨余堆肥全氮含量下降了26.3%,总氮损失率达50.0%。氨挥发是厨余堆肥氮损失的重要途径,氨挥发主要集中在堆肥高温阶段的中后期。
The static aerobic process was used to investigate the turnover and loss of nitrogen compounds by a food waste composting experiment. Total nitrogen and organic nitrogen content presented fall, NH4+-N concentration ascend and NO3--N concentration changed very little during composting. After composting, water soluble component increased greatly, with 90% of organic nitrogen and 81% of total nitrogen in water solubility state. During composting, total nitrogen content descended by 26.3% and total nitrogen lost by 50%, which were attributed mostly through ammonia volatilization.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第12期54-56,共3页
Environmental Science & Technology
基金
国家863高技术资助项目(2001AA644020)
国家973资助项目(2005CB724203)
关键词
堆肥
氮素转化
氨挥发
composting
nitrogen turnover
ammonia volatilization
