摘要
城市垃圾厌氧消化制取沼气的过程中存在着一个明显的产酸阶段。产酸阶段在中温条件下持续约１个月，高温条件下持续约２０ｄ。ＶＦＡ含量高于２０００ｐｐｍ。ＣＯＤ、ＴＳ有一定的去除率。有少量气体产生，约５０～８５Ｌ／ｋｇＶＳ，但气体中甲烷含量很低（＜２５％）。文中还研究了不同进料粒径、进料固体含量（ＴＳ）、反应温度下产酸阶段的不同表现。
here is an acidifying phase in the anaerobic digestion process of municipal solid waste.The experimental result showed that the phase lasted about 30 days under moderate temperature,20 days under high temperature.The VFA was higher than 2000 ppm,COD and TS was reduced slightly,gas production was 50～85 L/kg.VS with very low methane concentration.Under different input diameter,solid concentration and reaction temperature,the experiments were conducted to study the different aspects of acidifying phase.
出处
《重庆环境科学》
1998年第1期35-37,共3页
Chongqing Environmental Science
关键词
城市垃圾
厌氧消化
产酸阶段
垃圾处理
Municipal solid waste,Anaerobic digestion,Acidifying phase
