生物过滤法去除死猪堆肥排放臭气效果的中试
发布时间：2019-01-18 07:22
【摘要】：为研究生物过滤法去除死猪堆肥发酵处理过程产生臭气以及挥发性有机物(volatile organic compounds,VOCs)的可行性,开展了死猪和猪粪混合堆肥试验,分析了死猪堆肥过程臭气浓度特性和VOCs组分特征,对生物过滤法去除臭气中VOCs的工艺关键参数-停留时间进行优化试验。死猪堆肥过程中排放VOCs种类达37种,其中主要致臭组分为三甲胺、二甲基硫、二甲基二硫、二甲基三硫;以腐熟猪粪堆肥作为滤料(添加3%活性污泥),在停留时间为30~100 s的条件下,生物过滤法对死猪堆肥排放臭气去除率达90%以上;停留时间60~100 s的条件下对VOCs中主要致臭组分的去除效率达82.2%~100%,生物过滤法去除死猪堆肥过程臭气浓度和VOCs的优化停留时间为60 s。研究结果能为死猪堆肥发酵过程排放臭气的处理和控制技术进一步研发提供科学依据。
[Abstract]:In order to study the feasibility of biofiltration to remove odour and volatile organic compounds (volatile organic compounds,VOCs) from dead pig compost fermentation, a mixed composting experiment was carried out with dead pig and pig manure. The characteristics of odor concentration and VOCs component in dead pig composting were analyzed. The key parameter of biofiltration for removing VOCs from odor was optimized, the residence time (RTD). There are 37 kinds of VOCs discharged from dead pig composting, among which the main smelling components are trimethylamine, dimethyl sulfur, dimethyl disulfide and dimethyl trisulfide. Under the condition of 30 ~ 100 s residence time, the removal rate of odor from dead pig compost by biofiltration was more than 90% with 3% activated sludge added as filter material. The removal efficiency of the main odor components in VOCs was 82.2 and 100 under the condition of residence time of 60 ~ 100 s. The concentration of odor in the composting process of dead pigs by biofiltration and the optimal residence time of VOCs were 60 s. The results can provide scientific basis for further research and development of odour treatment and control technology in the fermentation process of dead pig compost.
【作者单位】： 中国农业科学院农业环境与可持续发展研究所农业部设施农业节能与废弃物处理重点实验室;
【基金】：现代农业产业技术体系建设专项基金(CARS36-36-10B) 公益性行业(农业)科研专项项目(201303091)
【分类号】：S141.4
本文编号：2410461
[Abstract]:In order to study the feasibility of biofiltration to remove odour and volatile organic compounds (volatile organic compounds,VOCs) from dead pig compost fermentation, a mixed composting experiment was carried out with dead pig and pig manure. The characteristics of odor concentration and VOCs component in dead pig composting were analyzed. The key parameter of biofiltration for removing VOCs from odor was optimized, the residence time (RTD). There are 37 kinds of VOCs discharged from dead pig composting, among which the main smelling components are trimethylamine, dimethyl sulfur, dimethyl disulfide and dimethyl trisulfide. Under the condition of 30 ~ 100 s residence time, the removal rate of odor from dead pig compost by biofiltration was more than 90% with 3% activated sludge added as filter material. The removal efficiency of the main odor components in VOCs was 82.2 and 100 under the condition of residence time of 60 ~ 100 s. The concentration of odor in the composting process of dead pigs by biofiltration and the optimal residence time of VOCs were 60 s. The results can provide scientific basis for further research and development of odour treatment and control technology in the fermentation process of dead pig compost.
【作者单位】： 中国农业科学院农业环境与可持续发展研究所农业部设施农业节能与废弃物处理重点实验室;
【基金】：现代农业产业技术体系建设专项基金(CARS36-36-10B) 公益性行业(农业)科研专项项目(201303091)
【分类号】：S141.4
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