来自危险废物焚烧的富含的飞灰的低碳机械化学稳定
Jiaxin Yin1, Yubiao Ma2, Yanjun Liu1
1Research 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
|February 20, 2026
概括
一种新的低碳机械化学方法使用皮里特来稳定飞中的,从而有效地去除盐和回收资源. 与传统方法相比,这一过程显著减少了环境影响.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 处理高和可溶盐含量的焚烧飞灰对环境构成挑战.
- 传统的基于水泥的固化导致高二氧化碳排放,并受到移动和化物的破坏.
- 废物管理和资源回收因稳定困难而复杂化.
研究的目的:
- 开发一种机械化学稳定路径,用于在飞灰中固定.
- 将这种方法与下游淡化进行资源回收的整合.
- 建立一个实用的,低碳途径来处理高风险的飞灰.
主要方法:
- 通过机械化学处理 (球磨) 使用天然的酸盐添加剂来固定.
- 在富含Ca/Cl的矩阵中研究了反应机制.
- 进行水冲洗以去除盐和蒸发性结晶以回收盐.
主要成果:
- 石通过硫化和封存有效地固定了 (HgS和Fe-S-Hg复合物).
- 洗水清除了90%以上的可溶盐,使液减少到7μg/L.
- 回收的盐符合脱冰规格,该工艺显示碳足迹比传统方法低60%.
结论:
- 使用矿的机械化学路径为飞处理提供了一种实用,安全和具有成本效益的替代方案.
- 综合处理和资源回收是可以实现的,环境影响显著减少.
- 这一途径使危险飞灰的可持续管理成为可能,将废物转化为有价值的资源.
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