摘要
通过组织4个中试规模的堆肥试验,研究了畜禽场废弃物强制通风静态仓系统堆肥温度的时空特性.试验结果表明:在时间上,堆肥温度均经历了升温期、高温期和降温期,且高温持续期都能满足国家粪便无害化卫生标准要求;以锯末和稻草组合为调理剂的处理能改善堆料的结构,其升温速率明显比以锯末为调理剂的处理快,有利于升温和堆肥过程的进行;以玉米芯为调理剂,报警温度设置为70℃时的高温持续期较60℃时的长,且会延长堆肥周期;在空间上,在起始阶段堆体内的下层温度高于上层温度,进入高温期后上层温度高于下层,且呈现梯度效应.
Four pilot swine manure composting experiments were conducted to investigate the temporal-spatial distribution of pile temperature of aerated static bin composting system during the composting of swine manure. The results are as follows: (1) the pile temperature undergoes three phases (heating, thermophilic and cooling phases), and the duration of the thermophilic phase is long enough to conform to the sanitary standard of the non-hazardous treatment of nightsoil; (2) the pile structure can be improved by adding rice straw in sawdust, and the increasing rate of temperature is more significantly enhanced than that with sawdust, thus benefiting the temperature increasing process and the composting process; (3) when corn corb is used, the thermophilic phase with the temperature being controlled at 70℃ is prolonged compared with that at 60℃, which would postpone the maturity of composts; (4) the distribution of pile temperature presents gradient effect, that is, the temperature in the under layer is higher than that in the upper layer in the initial phase, while it is opposite after entering the thermophilic phase.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第3期19-23,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家'十五'重点科技攻关计划资助项目(2002BA514A-1-1)
关键词
畜禽场废弃物
好氧堆肥
堆肥温度
时空特性
梯度效应
animal waste
aerobic composting
composting temperature
temporal-spatial distribution
gradient effect
