生活垃圾焚烧厂PCDD/Fs排放对周边土壤污染影响的研究  

Effect of PCDD/Fs emission from a municipal solid waste incinerator on the vicinal soil

作　　者：张漫雯[1] 张振全[1,2] 张素坤[1] 冯桂贤[1] 任明忠[1] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655 [2]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《中国环境科学》2013年第S1期203-209,共7页China Environmental Science

基　　金：环保公益性行业科研专项(201109001);国家"863"项目(2011AA060605)

摘　　要：以一生活垃圾焚烧厂为中心,在厂区周围5km的范围内选取包括厂区在内的14个环境敏感点,对其土壤环境进行PCDD/Fs监测,并通过分析样品的PCDD/Fs浓度水平空间分布特征、单体及同族物分布特征以及主成分分析结果,解析其污染来源,以了解生活垃圾焚烧厂的PCDD/Fs排放对其周边土壤环境造成的影响.结果表明,厂区土壤显示最高浓度水平(20.8I-TEQng/kg),其余研究区域均表现出较低的污染水平(0.66~7.11I-TEQng/kg),均没有对土壤环境造成安全威胁.样品中PCDD/Fs单体及同族物分布的特征均显示了OCDD的主要贡献特征,受源影响特征不明显.主成分分析结果显示,该垃圾焚烧厂并非是该研究区域PCDD/Fs污染的主要影响因子,所有点位受交通源影响的可能更大.A total of fourteen sensitive points around a municipal solid waste incinerator(MSWI) within 5km were selected to conduct soil monitoring of PCDD/Fs. The concentrations of special distribution, congener and homologue profiles and principal component analysis were carried out to assess the soil environmental impact of the MSWI. Based on the results, it was found that :(1) the concentration of PCDD/Fs in the sample collect from plant area was the highest(20.8I-TEQng/kg), but the rest were all in a relative low and safe levels(0.66-7.11I-TEQng/kg);(2) OCDD was the most significant contributor in congener and homologue profiles of all the samples, which implied the limited effect from the MSWI;(3) traffic emission but not this MSWI was the primary contributor of PCDD/Fs in the study field through principal component analysis.

关 键 词：生活垃圾焚烧 PCDD/FS 土壤环境 源解析 

分 类 号：X53[环境科学与工程—环境工程]