摘要
为研究不同水平自由空域(Fas)对堆肥效果的影响,利用实验室小型反应器进行了好氧堆肥试验,使用等量猪粪分别与等量不同粒径(0～1 cm、2～5 cm和7 cm)麦秸按照质量比1∶0.086混合获得不同Fas水平(56.70%、62.67%和68.36%),利用温度传感器、氧浓度传感器动态监测堆肥过程中温度和氧气体积分数的变化,研究分析了堆肥始末含水率和挥发性固体(VS)含量的变化,并基于M atlab平台建立了基于温度、氧气体积分数等多因素Monod形式的VS降解动力学模型。试验结果表明:等量猪粪与等量麦秸混合堆肥,麦秸粒径产生的Fas差异对堆肥过程影响显著;所建立的基于温度、氧气体积分数等多因素Monod形式VS降解动力学模型模拟结果与实际测量结果一致。
To study the effects of different initial free airspaces（Fas） on pig slurry-wheat straw reactor scale composting,three levels of Fas（56.70%,62.67%,68.36%） were obtained by mixing pig slurry and wheat straw with the same mass ratio（1∶0.086） but in different wheat straw sizes（0～1 cm,2～5 cm,7 cm）.Oxygen concentration and temperature were monitored by sensors during the whole composting period,while moisture and volatile solid（VS） content were checked by chemical analysis method at the end of composting.In addition,a Monod form model was employed to simulate VS content during composting period.According to the results of composting test,changes of oxygen concentration,temperature,moisture and VS based on different initial Fas levels were respectively clearly different;effects of bulking agent sizes on mixture structure were apparent.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第6期122-126,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十一五"国家科技支撑计划资助项目(2006BAD10B05)
关键词
好氧堆肥
反应器
自由空域
模拟
Aerobic composting
Reactor
Free airspace
Simulation
