堆积参数对MSW生物干化的影响

发布时间：2018-09-18 09:06

【摘要】：采用生物干化技术来处理高含水率城市生活垃圾(Municipal Solid Waste,MSW),研究了堆积高度(0.75 m、1.0 m、1.2 m、1.5 m)、堆积密度(0.46×10~3~0.64×10~3kg/m~3)对城市生活垃圾生物干化的影响。通过生物干化装置和数据收集系统监测MSW生物干化过程中温度、含水率、挥发性固体(VS)质量分数、热值的情况。微生物发酵的产热量通过堆体内部温度的累积来表征。经过15 d的生物干化试验,当垃圾堆积高度为1.2 m、堆积密度为0.51×103kg/m~3时,垃圾的含水率降到最低,仅为33.6%,低位热值提高130%,达到12 264 k J/kg。试验产物的平均低位热值提高到10 973 k J/kg,达到制备垃圾衍生燃料的要求。结果表明,通过优化垃圾的堆积参数,可有效提高垃圾含水率下降幅度、单位质量垃圾水分去除率、单位质量垃圾有机物降解率和低位热值。
[Abstract]:The biological drying technology was used to treat high moisture content municipal solid waste (Municipal Solid Waste,MSW), and the effect of stacking height (0.75 mm ~ 1.0 m ~ (-1) m ~ (1.2) m),) ~ (1.5 m),) density (0.46 脳 10 ~ (3) C ~ (3) ~ (0.64 脳 10~3kg/m~3) on municipal solid waste (MSW) biodrying was studied. The temperature, moisture content, volatile solid (VS) mass fraction and caloric value of MSW were monitored by biological drying device and data collection system. The heat production of microbial fermentation is characterized by the accumulation of internal temperature in the reactor. After 15 days of biological drying experiment, when the height and density of solid waste were 1.2 m and 0.51 脳 10 ~ 3 kg / m ~ 3, the moisture content of garbage decreased to the lowest, only 33.6%, and the low calorific value increased 130% to 12.264 k / kg 路kg ~ (-1). The average low calorific value of the test product is increased to 10 973 k / kg, which meets the requirement of producing garbage derived fuel. The results showed that the decrease of water content per unit mass removal rate of organic matter degradation rate of organic matter and low calorific value of garbage per unit mass could be effectively increased by optimizing the accumulation parameters of garbage.
【作者单位】：武汉理工大学硅酸盐建筑材料国家重点实验室;华新环境工程有限公司;
【基金】：国家“十二五”科技支撑计划项目(2012BAC15B04)
【分类号】：X799.3

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