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工业固体废弃物对PCDD/F,dl-PCB和PAH产生的影响,这些废弃物伪元件在工程联合燃烧过程中对其进行调节

Jing Meng¹, Bei Zhang², Qianqian Li¹

¹Key Laboratory of Environment Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of hazardous materials

|November 27, 2024

概括

城市固体废物与工业固体废物的共同燃烧显著增加了有毒污染物,如多化二子-p-二氧化物和二酸 (PCDD/F) 和类似于二氧化物的多化双 (dl-PCB). 塑料和织品废弃物是其中的主要贡献者,需要严格监管.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
污染控制污染控制

背景情况:

城市固体废物 (MSW) 和工业固体废物 (ISW) 的联合燃烧正在增加.
共同燃烧对PCDD/F,dl-PCB和PAH等有毒副产品的影响尚未完全理解.
这种知识差距阻碍了对这些污染物的有效控制策略.

研究的目的:

调查MSW和ISW联合燃烧对PCDD/F,dl-PCB和PAHs产生的影响.
确定负责形成这些有毒污染物的关键废物成分.
为优化联合燃烧过程提供见解,以减少有毒污染物排放.

主要方法:

在一台650t/d的焚烧炉中,使用不同的ISW混合物进行了六次工程焚烧试验.
采用伪成分矩阵模型来分析复杂的废物组成.
量化提取了九种塑料和生物质伪成分,以将废物与污染物联系起来.

主要成果:

与原始MSW焚烧相比,共燃增加了飞灰中的PCDD/F和dl-PCB的6倍.
聚乙烯基醇二甲基 (PET),聚乙烯 (PVC) 和纤维素被确定为PCDD/F和dl-PCB的主要贡献者.
联合燃烧对产生多环芳 (PAHs) 的影响较小.

结论:

燃烧PET和纤维素产生衍生物,而PVC提供,对于形成PCDD/F和dl-PCB至关重要.
建议严格监管涉及废塑料,聚织品,人造皮革和纸张的共同燃烧.
这项研究对于优化联合燃烧实践来实现有毒污染物的源减少具有重要意义.

关键词:

纤维素纤维素是一种纤维素.共同燃烧是一种共同燃烧.聚乙烯甘二烯甲酸盐 (PET) 是一种聚乙烯基甘二烯甲酸盐.聚乙烯化物 (PVC) 的使用有毒污染物有毒污染物

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