摘要
采用实验室模拟方法和GC-MS等监测手段,研究了2种不同的通风方式对垃圾好氧处理过程中挥发性有机物(VOCs)释放的组成特征和释放浓度的影响。通过定性和定量分析表明,好氧生物处理过程中,2组试验共检出104种VOCs。VOCs释放浓度集中前3d,约占浓度总量的75%,随着通风进行,VOCs排放量逐步降低。释放的VOCs气体中,主要致臭物质为硫醚类物质。和连续通风相比,间歇通风由于降低了通风量,堆体高温阶段保留时间更长,因而其释放的VOCs种类增多,VOCs浓度较大。
To investigate the relationship between ventilation mode and volatile organic compounds （VOCs） emission properties during aerobic decomposition of municipal solid waste （MSW）, two trials were conducted with different ventilation modes such as intermittent aeration 10 min/20 min and continuous aeration. The released VOCs were qualitatively and quantitatively monitored by gas chromatography （GC） -mass spectrometer （MS） and 104 kinds of VOCs were detected during the aerobic process. Results showed that VOCs concentration released in the first 3 days amounted to about 75% of total released concentrations. The organic thioethers are the main source of odour in all the released VOCs. Due to smaller aeration volume and higher temperature of pile, the types of VOCs emission were increased, and the concentrations were higher than that of continuous aeration, when using intermittent aeration.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第10期15-20,共6页
Environmental Science & Technology
基金
"十二五"国家科技支撑计划项目(2012BAC25B03-6)
国家科研院所专项基金项目
关键词
挥发性有机物
生活垃圾
通风方式
有机硫化物
volatile organic compounds（VOCs）
municipal solid waste（MSW）
ventilation mode
organic thioethers
