摘要
选取黄豆杆、红薯藤、菠萝蜜果核和紫檀树叶4种植物废物,分别与生活垃圾混合进行堆肥处理,考察堆肥过程中甲硫醇、甲硫醚、二甲基二硫醚3种含硫类可挥发性有机物(VSCs)释放量与植物废物性质之间的关系.结果表明,各工况下,3种VSCs释放均集中在堆肥初期(前6d),甲硫醇均为主要的恶臭贡献者.不同工况的3种VSCs释放浓度差异显著.其中,以红薯藤为堆肥配料的工况下3种VSCs累积释放浓度均最高,以黄豆杆和紫檀树叶分别为堆肥配料的工况相对较低,累积释放浓度仅为前者的16.0%～74.3%,并低于生活垃圾单独堆肥.VSCs释放水平与混合原料的易降解有机物含量呈正比,与其植物多酚的含量呈反比.
Four kinds of green wastes were co-composted with municipal solid waste（MSW）to investigate their influence on the emission of volatile sulfur compounds（VSCs）,i.e.,methyl mercaptan,dimethyl sulfide and dimethyl disulfide during composting.VSCs emission mainly occurred at the initial phase（the first 6days）of composting in all scenarios, with significantly different concentrations.The scenario adopting sweet potato vine mixed with MSW showed the highest accumulated emission concentrations of all the detected VSCs,while another two scenarios taking soybean straw and pterocarpus leaves as accessory composting materials had lower accumulated emission concentrations,which were about 16.0%to 74.3%of those in the former scenario,respectively.The VSCs emissions of the three scenarios were lower than those of MSW mono-composting.The level of VSCs emission increased with the organics content,while decreased with the polyphenol content.Methyl mercaptan was the major VSC to be treated in order to control the odors emission.There were more VSCs emission under conditions with low oxygen content,and tropic green wastes enriched in polyphenol had an inhibitory effect to the VSCs emission during composting.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2011年第1期68-72,共5页
China Environmental Science
基金
“十一五”国家科技支撑计划项目(2006BAC06B04)
