| 垃圾焚烧飞灰熔融过程烟气中重金属的迁移分布规律 |
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| 引用本文： | 文娟,刘清才,杨剑.垃圾焚烧飞灰熔融过程烟气中重金属的迁移分布规律[J].环境科学学报,2010,30(1):148-152. |
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| 作者姓名： | 文娟 刘清才 杨剑 |
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| 作者单位： | 重庆大学材料科学与工程学院,重庆,400044 |
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| 基金项目： | 国家“十五”科技攻关项目(No.2003BA808A17-02-03)~~ |
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| 摘 要： | 采用重庆同兴垃圾焚烧(MSWI)发电厂飞灰,开展了高温熔融及铁浴熔融重金属分布迁移规律实验研究.采用布袋式除尘法收集捕捉熔融过程烟气中的烟尘,并对烟尘中的重金属组分、含量、形态和结构进行测试分析,研究了高温熔融分离过程各金属元素在烟气中的迁移分布规律.结果表明,迁移到烟气中的主要元素为Zn、Pb、Cl、K、Na,并以ZnS、ZnO、PbCl2、KCl、NaCl形态存在于熔融飞灰上;Rb、Cd、Sn、Sb等低沸点易挥发金属元素在熔融烟气中以硅酸盐、磷酸盐形态存在;Hg主要以氯氧化物、硫氯化物形态存在.铁浴熔融可有效抑制Ti、Mn、Fe、Se的挥发,提高Cd、Sn、Sb的挥发速率,有利于提高Rb在熔融飞灰上的分配率,但对Zn、Rb、Pb的挥发没有影响.
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| 关 键 词： | 餐厨垃圾 厌氧消化 水解 动力学模型 扩散阻力 |
| 收稿时间： | 4/3/2009 5:20:48 PM |
| 修稿时间： | 7/11/2009 1:27:24 PM |
The migration and distribution of heavy metals in melting flue gas during the melting process of MSWI fly ash |
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| WEN Juan,LIU Qingcai and YANG Jian.The migration and distribution of heavy metals in melting flue gas during the melting process of MSWI fly ash[J].Acta Scientiae Circumstantiae,2010,30(1):148-152. |
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| Authors: | WEN Juan LIU Qingcai and YANG Jian |
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| Institution: | WU Yun1,ZHANG Daijun1,YANG Gang21. Resource , Environment Science College,Chongqing University,Chongqing 4000442. Department of Geography,Chongqing Education College,Chongqing 400067 |
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| Abstract: | The profile of hydrolysates produced during the anaerobic digestion of kitchen wastes was investigated experimentally and theoretically. The experimental results showed that the hysteresis of the hydrolysis rate was mainly controlled by the diffusion effect. The hydrolytic mechanism of kitchen wastes is elaborated taking the diffusion effect into consideration. A partitioning model of the hydrolysis of kitchen waste is formulated including the coefficient of diffusion resistance in the model. The coefficien... |
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| Keywords: | kitchen wastes anaerobic digestion hydrolysis kinetic model diffusion resistance |
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