猪粪堆肥挥发性有机物的产生规律与影响因素

发布时间：2018-06-23 18:09

本文选题：粪 + 发酵　；参考：《农业工程学报》2017年05期

【摘要】：堆肥是畜禽粪便处理及资源化利用的有效途径,然而堆肥过程中极易产生挥发性有机物(VOCs,volatile organic compounds),引发恶臭问题,并对人体健康带来危害。该研究以猪粪和秸秆为原料,通过堆肥试验,研究了含水率、碳氮比和通风速率等工艺参数对猪粪堆肥过程中主要VOCs产生的影响。研究结果表明:堆肥过程中TVOCs的最高体积分数可达2 000×10~(-6)以上,主要在堆肥升温期产生。二甲二硫、二甲三硫是主要的致臭VOCs,其中,影响二甲二硫排放的主要因素为物料初始含水率,影响二甲三硫排放的主要因素为通风速率。极差及方差分析结果表明,堆肥过程中采用含水率65%,碳氮比30,通风速率0.1 m~3/(min·m~3)可以有效控制VOCs的排放。
[Abstract]:Composting is an effective way to dispose livestock and poultry feces and make use of resources. However, volatile organic compounds (VOCs volatile organic compounds),) are easily produced in composting process, which can cause stench and harm to human health. Using pig manure and straw as raw materials, the effects of technological parameters such as moisture content, carbon to nitrogen ratio and ventilation rate on the production of VOCs in the composting process of pig manure were studied by composting experiment. The results showed that the highest volume fraction of TVOCs in composting process was over 2 000 脳 10 ~ (-6), which mainly occurred during the composting heating period. Dimethyl disulfide and dimethyl trisulfide are the main deodorizing VOCs. The main factors affecting the emission of dimethyl disulfide are the initial moisture content of the material, and the ventilation rate is the main factor affecting the emission of dimethyl disulfide. The results of range and variance analysis showed that moisture content (65%), carbon to nitrogen ratio (30%) and ventilation rate (0.1 mm3 / (min M3) could effectively control the emission of min in composting process.
【作者单位】：农业部规划设计研究院农村能源与环保研究所;农业部农业废弃物能源化利用重点实验室;河北农业大学资源与环境科学学院;
【基金】：基金项目:自然村生产生活循环技术系统构建和集成示范(2015BAL04B03)
【分类号】：S141.4

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