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中文核心期刊

热等离子体处理废物技术的进展

DEVELOPMENT OF WASTE TREATMENT BY THERMAL PLASMA TECHNOLOGY

  • 摘要: 随着我国经济的快速发展, 固体废物的年产量显著增加, 焚烧减容后仍产生大量的焚烧残余物, 其中含有重金属、二噁英等有害成份, 对其填埋不仅占用大量土地资源, 而且对土壤和地下水存在二次污染风险等诸多问题, 因而亟需发展具有良好环保效益和社会效益的废物处理新技术. 热等离子体技术在航天技术发展初期, 用于航天再入过程航天器头部防热研究和等离子体对无线电通讯的干扰研究. 之后从军用转向民用, 主要的场景之一是用于环保领域处理废物, 从早期销毁报废武器、化学武器战剂和中低放射性废物开始, 发展到现在, 等离子体技术已经在有机和无机废物处理技术中, 成为有特色的先进技术. 文章介绍了等离子体处理废物技术的原理与特点, 回顾了低温热等离子体技术在处理固体废物中的发展过程, 综述了低温热等离子体处理固体废物技术在基础研究领域和工程应用领域的进展, 对目前等离子体固体废物处理技术应用中存在的问题进行了着重分析, 并提出发展建议, 以此悼念我国应用热等离子体技术的先驱吴承康院士以及他对于热等离子体技术处理废物技术基础研究的关怀和指导.

     

    Abstract: With the rapid development of China's economy, the annual output of solid waste has increased significantly. After incineration and capacity reduction of solid waste, a large amount of incineration fly ash is still produced, which contains heavy metals, dioxins (PCDD/PCDFs) and other harmful components. Pouring the incineration residue in the landfill not only occupies a large amount of valuable land resources, but also has many problems such as secondary pollution risk to soil and groundwater, so it is urgent to develop new advanced waste treatment technologies with good environmental protection and social benefits. In the early stage of the development of aerospace technology, low-temperature thermal plasma technology has been used for the study of the heat protection of the head of the spacecraft in the space re-entry process and the research on the interference of plasma sheath to radio communication. Afterwards, the application of thermal plasma technology shifted from aerospace application to civil use, and treating waste in the environmental protection field is one of its main application scenarios. Starting from the early destruction of scrapped weapons, chemical warfare agents, low- and medium-level radioactive wastes, and now the development of plasma technology has become a distinctive advanced technology in organic and inorganic wastes treatment technologies. This paper introduces the principle and characteristics of plasma waste treatment technology, reviews the development process of low-temperature thermal plasma technology in the treatment of solid waste, overviews the progress of low-temperature thermal plasma treatment of solid waste technology in the field of basic research and engineering application, focuses on the analysis of the problems existing in the application of plasma solid waste treatment technology, and puts forward development suggestions, so as to mourn the pioneer of plasma science and technology in China, our most respectful Prof. Chengkang WU, the academician of Chinese Academy of Sciences and his advising to the fundamental research for waste treatment by thermal plasma technology.

     

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