| 生活垃圾焚烧厂垃圾的汞含量与汞排放特征研究 |
| 摘要点击 1546 全文点击 1149 投稿时间：2016-03-02 修订日期：2016-05-09 |
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| 中文关键词 生活垃圾焚烧 垃圾汞含量 垃圾组分 汞 排放因子 |
| 英文关键词 municipal solid waste(MSW) incineration mercury concentrations of MSW MSW component mercury emission factors |
| 作者 | 单位 | E-mail | | 段振亚 | 青岛科技大学机电工程学院, 青岛 266061
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | zyduan88@163.com | | 苏海涛 | 青岛科技大学机电工程学院, 青岛 266061 | | | 王凤阳 | 清华大学环境学院, 北京 100084
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | | | 李智坚 | 清华大学环境学院, 北京 100084
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | | | 李韶璞 | 青岛科技大学机电工程学院, 青岛 266061 | | | 王书肖 | 清华大学环境学院, 北京 100084
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | shxwang@tsinghua.edu.cn |
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| 中文摘要 |
| 垃圾焚烧是大气汞的重要排放源之一，为了解垃圾焚烧厂入炉垃圾中的汞含量和焚烧汞排放特征，本研究选取了上海、广州和芜湖市3座典型生活垃圾焚烧厂，对入炉垃圾进行连续采样分析，采用OH法对排放烟气进行采样测试，同时采集焚烧飞灰和炉渣样品进行汞含量分析. 结果表明，上海、广州、芜湖市生活垃圾焚烧厂入炉垃圾中汞含量分别为（0.39±0.04）、（0.57±0.05）、（0.27±0.08）mg·kg-1. 广州市焚烧厂排放烟气汞质量浓度为（9.5±3.9）μg·m-3，烟气中Hgp、Hg2+、Hg0分布比例分别为（0.9±0.8）%、（89.0±5.4）%、（10.1±4.6）%；芜湖市焚烧厂排放烟气汞质量浓度为（24.1±6.0）μg·m-3，烟气中Hgp、Hg2+、Hg0分布比例分别为（1.0±0.8）%、（65.4±27.6）%、（33.6±27.5）%；不同焚烧工艺排放烟气中Hg2+的分布比例不同. 广州、芜湖市焚烧厂脱汞效率分别为96.7%、33.7%；上海、广州、芜湖市垃圾焚烧厂大气汞排放因子分别为（0.156±0.016）、（0.019±0.002）、（0.178±0.027）mg·kg-1，广州市焚烧厂大气汞排放因子略低于韩国、日本的生活垃圾焚烧厂，上海、芜湖市垃圾焚烧厂大气汞排放因子与国内部分生活垃圾焚烧厂相接近. |
| 英文摘要 |
| Municipal solid waste (MSW) incineration is one of the most important atmospheric mercury emission sources. To investigate the mercury concentrations of MSW and mercury emission characteristics in incineration plants, this study analyzed the MSW sampled in 3 typical MSW incineration plants in Shanghai, Guangzhou and Wuhu respectively. The exhaust gas samples in incineration plants were sampled by using OH (Ontario Hydro) method. The mercury concentrations in fly ash, and bottom ash samples were also analyzed. The results indicated that mercury concentrations of MSW in Shanghai, Guangzhou, and Wuhu incineration plants were (0.39±0.04) mg·kg-1, (0.57±0.05) mg·kg-1, and (0.27±0.08) mg·kg-1 respectively. The mercury concentrations of exhaust gas in Guangzhou, Wuhu MSW incineration plants were (9.5±3.9) μg·m-3 and (24.1±6.0) μg·m-3 respectively; Particulate mercury (Hgp), gaseous oxidized mercury (Hg2+), and gaseous elemental mercury (Hg0) represented (0.9±0.8)%, (89.0±5.4)%, (10.1±4.6)% in Guangzhou MSW incineration plant, and (1.0±0.8)%, (65.4±27.6)%, (33.6±27.5)% in Wuhu MSW incineration plant, respectively. Gaseous oxidized mercury (Hg2+) of exhaust gas in different incineration process showed different distribution proportions. Besides, mercury removal efficiency of Guangzhou, Wuhu MWS incineration plants was 96.7% and 33.7%, respectively. The atmospheric mercury emission factors of Shanghai, Guangzhou, and Wuhu MSW incineration plants were (0.156±0.016) mg·kg-1, (0.019±0.002) mg·kg-1, (0.178±0.027) mg·kg-1 respectively. Compared with MSW incineration plants in Japan and Korea, the atmospheric mercury emission factor of Guangzhou incineration plant was slightly lower; Atmospheric mercury emission factors of Shanghai and Wuhu MSW incineration plants were close to those of domestic fractional MSW incineration plants. |
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