城市生活垃圾初期降解挥发性有机物释放特征  

Emission of Volatile Organic Compounds During Initial Decomposition Phase of Municipal Solid Waste

作　　者：何品晶[1,2,3] 曾阳[1,2,3] 唐家富[1] 邵立明[1,2,3] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092 [3]同济大学长江水环境教育部重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2010年第6期854-858,869,共6页Journal of Tongji University:Natural Science

基　　金：国家科技支撑计划资助项目(2006BAC06B04;2006BAC02A03)

摘　　要：采用实验模拟方法,研究了城市生活垃圾初期降解阶段的VOCs（挥发性有机物）释放特征.研究结果表明,72 h内垃圾总挥发性有机物（TVOCs）释放率为9.67~20.30 mg.kg-1,其中换气率为24%的工况,释放率最低.TVOCs中酮类物质占70%~80%,硫醚类物质占10%~20%;其中硫醚类物质是主要的致臭组分.TVOCs释放呈前段高、中间低、末段再升高的特征,但形成恶臭的硫醚类却呈单调上升趋势.通风良好的堆积条件会抑制初期降解阶段VOCs的释放,而好氧微生物接种具有控制该阶段生活垃圾VOCs释放的潜力.Simulated tests were carried out to investigate the characteristics of the emission of volatile organic compounds（VOCs）.The emission rates of total VOCs（TVOCs） were 9.67~20.3 mg·kg-1 in 72 h after municipal solid waste（MSW） generation.The lowest emission rate corresponded to the high-level ventilation condition with the oxygen concentration in the MSW layer around 18%.The ketones and the thioethers accounted for 70%~80% and 10%~20% of TVOCs,respectively,which were the major odorous catalogues.During the period of 72 h,the TVOCs emission was high in 0~24 h,descended in 25~48 h,and rose again in 49~72 h.Contrastively,the emission of thioehters kept ascending during 72 h.The study suggests that the VOCs emission can be reduced by high-level ventilation and inoculation with aerobic microorganisms.

关 键 词：城市生活垃圾 挥发性有机物 初期降解阶段 硫醚 芳香烃 恶臭污染 

分 类 号：X511[环境科学与工程—环境工程]