城市垃圾焚烧飞灰中重金属形态及生物有效性研究

摘要

With the centralized incineration gradually becoming the main way for the life garbage disposal of city in China, the safe disposal and utilization of municipal solid waste incineration fly ash have been concerned by the scholars. Due to the impact of various environmental factors in the course of landfill, the heavy metals in municipal solid waste incineration fly ash may migrate and transform, and the speciation of heavy metals and its toxicity may also change. The paper studies the content, speciation and biological availability of the heavy metal in different particle size of municipal solid waste incineration fly ash, to providing the reference for the prediction of environmental risk of heavy mental in the course of safe landfill and resource utilization.%随着集中焚烧法逐渐成为我国城市生活垃圾处理的主要方式，焚烧飞灰的安全处置与利用也成为学者普遍关注的问题。由于在填埋过程中受到各种环境要素的影响，垃圾焚烧飞灰中的重金属有可能会发生迁移和转化，重金属形态、毒性也会随之变化。本文对不同粒径城市垃圾焚烧飞灰中重金属的总量、形态及生物有效性进行了研究，为其在安全填埋及资源化利用过程中预测重金属的环境风险提供参考。