作　　者： ; ; ; ; ;

机构地区： 华南农业大学资源环境学院环境科学与工程学系

出　　处： 《农业工程学报》 2008年第1期241-245,共5页

摘　　要： 为探讨利用生物滤池法去除鸡粪堆肥臭气的可行性,对生物滤池的填料组合、填料层高度、填料初始含水率及停留时间进行了筛选,并考察了生物滤池对挥发性有机物(VOCs)的去除情况。结果表明:生物滤池在处理鸡粪堆肥臭气过程中,以腐熟鸡粪堆肥和树皮组成填料、填料层高度为50 cm、填料初始含水率为50%以及停留时间为90.0 s的处理效果最佳;处理前后臭气中VOCs的分析结果表明,生物滤池对堆肥臭气中VOCs有很好的去除效果,处理后的堆肥臭气中VOCs的种类和浓度较处理前明显减少;比较堆肥臭气中氨和VOCs的总浓度后发现,氨所占的比例高达98.70%,说明用氨浓度来表示容器式鸡粪堆肥的臭气浓度具有可行性。就地利用鸡粪堆肥及树皮组合作为生物滤池填料去除鸡粪堆肥过程中的臭气具有很好的去除效果,可以在工厂化鸡粪堆肥中推广应用。 In-vessel system was used to compost chicken manure, and mature Chicken manure compost was applied as the media ofbiofilter to study the removal of odor emission. The composting reactor was made from an iron drum which had a cubage of 60L. The odor from the composting system passed through the three biofilters from their bottoms. Biofilter was made from a PVC tube which was 1 m high and had an inner diameter of 11 cm. In order to gain the optimal operating parameters of biofilter, and the authors seleced the assemblage, height, initial moisture content of the media and air detention time of biofilter to study. And what＇s more, the property change of biofilter media during processing odor and the removal of Volatile Organic Compounds （VOCs） from chicken manure composting was studied. According to the experimental data, the optimal operating parameters ofbiofilter resulted in using matured chicken manure compost as biofilter media and bark as assistant material, media height of 50 cm, initial moisture content of 50% and 90.0 s of the detention time, respectively. The experimental results indicate that biofilter removes VOCs efficiently, the compounds categories and the concentration of VOCs reduce after being treated by biofilter. The comparison of ammonia and VOCs content shows ammonia takes a great proportion of 98.70% in the odor from chicken manure in-vessel composting, which indicates the concentration of ammonia could be employed to express the concentration of odor in this technics. The biofilter achieved a good removal efficiency of odor from chicken manure composting with matured chicken manure compost as biofilter media and bark as assistant material, which can promote biofilter utilization in chicken manure composting.

关 键 词： 生物滤池 鸡粪堆肥 氨 臭气

领　　域： [环境科学与工程]