试验室好氧堆肥反应器系统性能试验  

Experimental Investigation on the Performance of Laboratory-scale Aerobic Composting Reactor System

作　　者：吕黄珍[1] 韩鲁佳[1] 张锐[1] 

机构地区：[1]中国农业大学工学院

出　　处：《农业机械学报》2008年第1期91-96,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金资助项目(项目编号:20040019039)

摘　　要：为探讨试验室自制强制通风好氧堆肥系统的保温性能和通风性能及其对好氧堆肥过程的作用效果,进行了不同初始质量和初始温度的热水保温试验,测定了系统保温性能参数以及不同流量下的通风性能,最后进行鲜猪粪麦秸混合好氧堆肥平行试验。结果显示:各反应器保温箱的保温性能没有显著性差异,保温性能参数UA值的标准差为0.02,最大相对标准偏差为4.93%;各反应器间通风系统性能差异不显著,当流量计设定流量分别为0.2、0.5、1.0、1.5和2.0L/min时,各反应器通风管出口处的流速在同一设定流量下基本相等;好氧堆肥试验过程堆体温度经历了快速升温、保持一段时间的高温和温度缓慢下降3个阶段,各反应器堆体温度超过50℃的时间分别为5.3天、6.0天、5.1天和6.8天,符合国家标准;可挥发性固体降解率依次为18.1%、13.3%、15.8%和15.2%。To study the performances of the insulation and aeration system of the laboratory-scale aerobic composting reactor system and its effects on aerobic composting process, the hot water thermal insulating experiments in different initial temperatures and weights were carried out. To evaluate the thermal property of insulation cans of the reactors, as well as their ventilation performances at 5 unequal fluxes, in addition, fresh pig slurry and wheat straw aerobic composting were tested subsequently. The experimental results show that： the thermal property parameters UA of insulation cans of the reactors, where U is the overall heat transfer coefficient （kW/（m^2· K）） and A is the heat transfer area （m^2）, has no significant difference, and the standard deviation （SD） and RSD of UA are 0.02 and 4.93% respectively; their ventilation performance has no significant difference, furthermore, for each flux of 0.2, 0.5, 1.0, 1.5 and 2.0 L/min, the aeration rate is almost equal; the core temperatures of composting of fresh pig slurry and wheat straw are typically undergone in turn a period of rapid temperature increase into the thermophilic range, a plateau region and a gradual return. The time of temperature remained above 50℃ was 5.3, 6.0, 5.1 and 6.8 days respectively. Their volatile solid reduction rates are 18.1%, 13.3 %, 15.8 % and 15.2 %.

关 键 词：好氧堆肥 反应器 性能分析 试验 

分 类 号：S141.4[农业科学—肥料学]